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Cisco Systems OL-4580-01 User's Manual

1. HZ OSPF Overview ASBR routes can be advertised as typel or type2 ASE The difference between typel and type2 is how the cost is calculated For a type2 ASE only the external cost metric is used when comparing multiple paths to the same destination For typel ASE the combination of the external cost and the cost to reach the ASBR is used Link State Databases OSPF routers advertise routes using LSAs The link state database stores the LSAs from routers throughout the area The advertisements depict the topology of the autonomous system They could include e Router links that describe the state and cost of each router s interface to an area e Network links from the designated router see the Setting the Priority of the CSS section that describe all routes on a segment for multi access segments with more than one attached router e Summarized links from ABRs that describe networks in the AS but outside an area e External links from ASBRs that describe destinations external to the AS All routers that are connected to an area maintain identical routing databases about the area Routers that are connected to multiple areas maintain a separate routing database for each attached area Instead of each router sending routing information to every other router on the network OSPF routers establish adjacencies among neighboring routers When the link state databases of two neighboring routers are synchronized they are consid
2. Showing IP Configuration Information W Table 6 5 Field Descriptions for the show ip statistics Command continued Field Description Echo Requests Out The number of transmitted ICMP Echo request messages Typically when the CSS transmits an ICMP request both the Echo Requests Out and the Echo Replies In counters increment as a pair for the ICMP request out and ICMP reply in packets Echo Replies Out The number of transmitted ICMP Echo reply messages Typically when the CSS transmits an ICMP reply both the Echo Requests In and the Echo Replies Out counters increment as a pair for the ICMP reply out and ICMP request in packets Source Quench The number of received ICMP Source Quench messages Router Adv The number of received ICMP router advertisement packets Time Exceeded The number of received ICMP Time Exceeded messages Timestamp The number of sent ICMP Timestamp request messages Information Request The number of received ICMP information request packets Mask Request The number of sent ICMP Address Mask Request messages Invalid The number of received bad ICMP type packets ARP Statistics Requests In The number of received ARP request packets Requests Out The number of sending ARP request packets Duplicate Addr The number of received ARP packets with a detected duplicate IP address The duplicate IP address can be the local IP
3. Caution A A caution means that a specific action you take could cause a loss of data or adversely impact use of the equipment Warning A warning describes an action that could cause you physical harm or damage the equipment Note A note provides important related information reminders and recommendations Bold text indicates a command in a paragraph Courier text indicates text that appears on a command line including the CLI prompt Courier bold text indicates commands and text you enter in a command line Italic text indicates the first occurrence of a new term book title emphasized text and variables for which you supply values 1 A numbered list indicates that the order of the list items is important a An alphabetical list indicates that the order of the secondary list items is important e A bulleted list indicates that the order of the list topics is unimportant An indented list indicates that the order of the list subtopics is unimportant Cisco Content Services Switch Routing and Bridging Configuration Guide Ea OL 4580 01 Preface Obtaining Documentation W Obtaining Documentation Cisco com Cisco documentation and additional literature are available on Cisco com Cisco also provides several ways to obtain technical assistance and other technical resources These sections explain how to obtain technical information from Cisco Systems You can access the
4. router discovery max advertisement interval default value 1 36 router discovery preference 1 34 RIP advertise configuring 5 3 advertise stopping 5 3 7 3 7 4 default route configuring 1 40 displaying configurations 1 41 5 5 equal cost configuring 5 4 receive configuring 1 40 redistribute configuring 5 3 redistribute stopping 5 4 running config example 5 2 send configuring 1 40 1 41 stopping on an IP interface 1 39 router discovery advertisement interval timers restoring default value 1 36 broadcast lifetime configuring 1 35 disabling 1 34 IP interface configuring for an 1 33 lifetime configuring 1 35 limited broadcast configuring 1 35 max advertisement interval configuring 1 36 Index W max advertisement interval restoring default value 1 36 min advertisement interval configuring 1 36 preference configuring 1 33 preference restoring default value 1 34 running config example ARP 4 2 CDP 7 3 DHCP relay agent 8 2 interface and circuit 1 5 IP 6 3 OSPF global 3 8 OSPF IP interface 3 10 RIP 5 2 spanning tree bridging 2 3 S showing bridge forwarding 1 19 1 22 2 6 CDP information 7 4 circuits 1 37 Ethernet interface errors 1 27 interfaces 1 22 IP configuration 6 13 IP interfaces 1 38 IP summary 6 20 OSPF area information 3 29 OSPF AS external entries 3 36 oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E W index OSPF c
5. Packet magazine is the Cisco quarterly publication that provides the latest networking trends technology breakthroughs and Cisco products and solutions to help industry professionals get the most from their networking investment Included are networking deployment and troubleshooting tips configuration examples customer case studies tutorials and training certification information and links to numerous in depth online resources You can access Packet magazine at this URL http www cisco com packet iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet business strategies for executives You can access iQ Magazine at this URL http www cisco com go iqmagazine Cisco Content Services Switch Routing and Bridging Configuration Guide EE OL 4580 01 Preface Obtaining Additional Publications and Information W e Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing developing and operating public and private internets and intranets You can access the Internet Protocol Journal at this URL http www cisco com ipj e Training Cisco offers world class networking training Current offerings in network training are listed at this URL http www cisco com en US learning index html Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 EE Preface W Obtaining Ad
6. i To Client Copy of From Server SSPAN Tx frame Protocol analyzer or Identical packets RMON device Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 EN Chapter1 Configuring Interfaces and Circuits E Configuring the Switched Port Analyzer Feature This section describes how to configure SPAN on a CSS It includes the following topics Configuring SPAN on a CSS Verifying the SPAN Configuration on a CSS Configuring SPAN ona CSS To configure SPAN on a CSS use the setspan command This command instructs the CSS to monitor all incoming and or outgoing traffic on a specified SSPAN port by copying the packets to a specified DSPAN port on the same module in the CSS This feature is disabled by default The syntax of this global configuration mode command is setspan src_port number dest_port number copyBothlcopyTxOnlylcopyRxOnly The options and variables for this command are as follows srce_port number Source port keyword and number of the SSPAN port in slot port format that you want to monitor The CSS copies all packets that are received or transmitted on this port to the DSPAN port dest_port number Destination port keyword and number of the DSPAN port in slot port format where you want to connect the network analyzer protocol analyzer or RMON probe The CSS copies the packets that flow through the SSPAN port to the DSPAN port that
7. 1 enter config ospf area 0 0 0 1 If the CSS is in a stub area include the stub option For example if area 0 0 0 1 is a stub area enter config ospf area 0 0 0 1 stub Optionally for a stub area you can also e Set a metric for the default route advertised in the stub area e Propagate summary LSAs into the stub area To set a metric for the default route advertised in the stub area include the default metric option By default the metric equals the smallest metric among the interfaces to other areas You can assign an integer from to 16777215 For example to assign a metric of 200 enter config ospf area 0 0 0 1 stub default metric 200 I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Bi Chapter3 Configuring Open Shortest Path First OSPF E Configuring OSPF on the CSS To propagate summary LSAs in the stub area include the send summaries option For example config ospf area 0 0 0 1 stub send summaries Removing an Area To remove an OSPF area disable OSPF then use the no form of the ospf area command For example config no ospf enable config no ospf area 0 0 0 1 Configuring Equal Cost Routes By default the OSPF CSS is configured to use 15 equal cost routes Use the ospf equal cost command to change the number of routes Enter a number from 1 to 15 To configure 10 equal cost routes for use by the CSS enter config ospf equal co
8. 8 Configuring the DHCP Relay Agent E Displaying the DHCP Relay Configuration Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 A aging time configuring for bridging 2 3 ARP clearing parameters 4 5 configuring for CSS 4 3 displaying information 4 6 running config example 4 2 timeout configuring 4 4 updating parameters 4 5 wait time configuring 4 4 assigning IP address for a circuit 1 32 audience xvi auto negotiate Ethernet ports 1 8 autonomous system boundary routers 3 6 3 15 3 16 3 20 3 21 INDEX bridge aging time configuring 2 3 forward time 2 4 hello time configuring 2 4 interface to a VLAN configuring 1 11 max age configuring 2 4 2 5 pathcost configuring 1 15 priority configuring for an interface 1 15 priority configuring for CSS 2 5 showing configurations 2 6 spanning tree enabling 2 5 state configuring 1 16 unconditional bridging 6 10 broadcast IP address restoring 1 32 BPDU guard displaying information 1 18 enabling 1 17 c caution ip record route enabling 6 7 shutting down an interface 1 29 smurf attacks 6 9 spanning tree bridging disabling 2 5 symbol overview xx Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 iN Index circuit configuring 1 31 configuring DHCP relay destination 8 3 displaying DHCP relay information 8 4 enabling or disabling DHCP relay age
9. CSS to process frames with information that overrides the default routing use the ip source route command For example config ip source route Caution Enabling the ip source route command may pose a major security risk to your network The IP source route specifies information that overrides the default routing a packet would normally take The packet could then bypass a firewall If this poses a problem avoid using the ip source route command The CSS does not load balance TCP or UDP packets with IP options that are destined to a VIP address These packet types are dropped and the CSS returns an ICMP destination port unreachable error This behavior exists regardless of the state enabled or disabled of the ip source route and ip record route commands The CSS however does respond to ICMP packets that are destined to a VIP address The CSS also responds to TCP or UDP packets that include IP options that are destined to a local circuit address or require that a routing decision be made To disable the processing of frames with the IP source route option the default behavior enter config no ip source route Configuring the IP Record Route A To enable the CSS to process frames with the IP address of each router along a path use the ip record route command For example config ip record route Caution Enabling the ip record route command could pose security risks to your network The ip record route
10. Circuits Configuring Interfaces Ti Bridging an Interface to a VLAN To specify a VLAN and associate it with the specified Ethernet interface use the bridge vlan command Enter an integer from 1 to 4094 as the VLAN identifier The default is 1 All interfaces are assigned to VLAN1 by default The following list defines the maximum number of VLANs supported by the specific CSS models e CSS 11501 and CSS 11503 A maximum of 256 VLANs per CSS and 64 VLANs per port FE or GE e CSS 11506 A maximum of 512 VLANs per CSS and 64 VLANs per port FE or GE When you specify the bridge vlan command enter the word vlan in lowercase letters and include a space before the VLAN number for example vlan 2 For example to configure el to VLAN2 on the CSS 11501 enter config if el bridge vlan 2 The CSS Gigabit Ethernet and Fast Ethernet interface ports support trunking to multiple VLANs through the trunk command In this configuration use the trunk command for the Ethernet interface instead of the bridge vlan command and the other associated bridge CLI commands To restore the default VLAN1 on the CSS 11501 enter config if e7 no bridge vlan To display all interfaces and the VLANs to which they are configured use the show circuit command In the show circuit display VLANs appear as VLAN uppercase with no space before the VLAN number See the Showing Circuits section for information about the show circuits comm
11. Circuits Configuring RIP for an IP Interface W Configuring RIP for an IP Interface You can configure Routing Information Protocol RIP attributes on each IP interface To configure RIP parameters and run RIP on an IP interface use the following routing commands within the specific circuit IP mode The default mode is to send RIP version 2 v2 and receive either RIP or RIP2 The timers used by RIP in the CSS include the following default values These RIP timer values are not user configurable in the CSS Transmit Tx time that is a random value between 15 and 45 seconds to avoid router synchronization problems Route expiration time of 180 seconds if the CSS loses the link to the next hop router the route is immediately removed Hold down time the amount of time the CSS transmits with an infinite metric of 120 seconds This section includes the following topics Enabling RIP on an IP Interface Configuring a RIP Default Route Configuring a RIP Receive Version Configuring RIP Send Version Configuring RIP Packet Logging Showing RIP Configurations for IP Addresses Enabling RIP on an IP Interface To start running RIP on an IP interface use the rip command For example config circuit ip VLAN7 192 168 1 58 rip To stop running the RIP on the interface enter config circuit ip VLAN7 192 168 1 58 no rip oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapte
12. End Station B it uses its default route to Router1 The packet contains Router1 s destination MAC address A traditional Layer 2 device forwards the packet to Router and Router forwards the packet to End Station B on VLAN2 Using opportunistic Layer 3 forwarding the CSS inspects the IP packet header to determine the destination IP address Instead of forwarding the packet to Router1 the CSS forwards the packet directly to End Station B Because the CSS handles the packet only once the router and uplink are not used and network resources are conserved Figure 6 1 Example of Opportunistic Layer 3 Forwarding Internet Router1 default ee A CSS VLAN1 VLAN2 End Station A End Station B J 8 ee a aa Noe Loa poe Seats Cae a g The options for this global configuration mode command are as follows e local default Applies opportunistic Layer 3 forwarding if the destination IP address belongs to a node that resides on one of the subnets directly attached to the CSS and the CSS is aware of an ARP resolution for that node Because the local option is the default use the no ip opportunistic command to reconfigure IP opportunistic Layer 3 forwarding to the local setting e all Applies opportunistic Layer 3 forwarding if the destination IP address matches any entry in the CSS routing table We do not recommend this option if the topology includes multipl
13. File 3 43 CHAPTER 4 Configuring the Address Resolution Protocol 4 1 ARP Configuration Quick Start 4 2 Configuring ARP 4 3 Configuring ARP Timeout 4 4 Configuring ARP Wait 4 4 Updating ARP Parameters 4 5 Clearing ARP Parameters 4 5 Showing ARP Information 4 6 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 Bovi E Contents CHAPTER 9 Configuring Routing Information Protocol 5 1 RIP Configuration Quick Start 5 2 Configuring RIP Advertise 5 3 Configuring RIP Redistribute 5 3 Configuring Equal Cost RIP Routes 5 4 Showing CHAPTER 6 Configuring RIP Configurations 5 5 the Internet Protocol 6 1 IP Configuration Quick Start 6 2 Config z i ng an IP Route 6 3 Disabling an Implicit Service for the Static Route Next Hop 6 6 Configuri Config Config Config E i Forwardi Config ri tj Hi Config Showing i ng an IP Source Route 6 7 ng the IP Record Route 6 7 ng Box to Box Redundancy 6 8 ing IP Equal Cost Multipath 6 8 ng IP Subnet Broadcast Addressed Frames 6 9 ng IP Unconditional Bridging 6 10 ng IP Opportunistic Layer 3 Forwarding 6 10 IP Configuration Information 6 12 Showing IP Global Configuration Parameters 6 13 Showing IP Interface Information 6 14 Showing IP Routing Information 6 15 Showing IP Statistics 6 16 Resetting IP Statistics 6 20 Showing a Summary of IP Global Statistic
14. For example config ospf default metric 10 typel To stop advertising the default ASE routes originated through OSPF enter config no ospf default Advertising Other Routes Through OSPF To advertise routes from other protocols such as firewall local RIP and static routes through OSPF use the ospf redistribute command Redistribution of these routes makes them OSPF external routes To redistribute routes from other protocols include one of the following options e firewall Advertises firewall routes through OSPF e local Advertises local routes interfaces not running OSPF e rip Advertises RIP routes through OSPF e static Advertises static routes configured for the Ethernet interface ports The ospf redistribute static command does not advertise static routes configured for the Ethernet management port To advertise a firewall route enter config ospf redistribute firewall Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 321 Chapter3 Configuring Open Shortest Path First OSPF WE Configuring OSPF ona CSS IP Interface Optionally you can define any of the following e The network cost for the route by including the metric option Enter a number from 1 to 16 777 215 The default is 1 e A 32 bit tag value to advertise each external route by including the tag option The 32 bit tag value is not used by the OSPF protocol itself You can use the tag value to
15. Retransmit Segments The total number of segments retransmitted that is the number of TCP segments transmitted containing one or more previously transmitted octets Output Resets The number of TCP segments sent containing the RST flag ICMP Statistics Echo Requests In The number of received ICMP Echo request messages Typically when the CSS receives the ICMP request both the Echo Requests In and the Echo Replies Out counters increment as a pair for the ICMP request in and ICMP reply out packets Echo Replies In The number of received ICMP Echo reply messages Typically when the CSS receives an ICMP reply both the Echo Requests Out and the Echo Replies In counters increment as a pair for the ICMP reply in and ICMP request out packets Unreachable The number of received ICMP Destination Unreachable messages Redirect The number of received ICMP Redirect messages Router Solicit The number of received ICMP router solicitation packets Param Problem The number of received ICMP Parameter Problem messages Timestamp Reply The number of sent ICMP Timestamp Reply messages Information Reply The number of received ICMP information reply packets Mask Reply The number of received ICMP Address Mask Reply messages Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Chapter 6 Configuring the Internet Protocol
16. Set the maximum allowable number in the hops field of the BOOTP header config dhep agent max hops 10 4 Optional Verify the DHCP configuration config show dhcp relay agent global The following running configuration example shows the results of entering the commands in Table 8 1 kK KR RK RRR KR KK KR KKK KKEKEKK QLOBAL RRR KKK KKK KKK KKK KKK KK KKK KKK dhcp agent max hops 10 RRR RR I RO TO FO TO FO II OT ROUT RII I IO kkk kk kkk kk k circuit VLAN2 dhcp relay to 192 168 22 25 dhcp relay agent Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Chapter 8 Configuring the DHCP Relay Agent Adding a DHCP Destination ona Circuit W Adding a DHCP Destination on a Circuit A CSS circuit acts as the DHCP relay agent For each circuit on the CSS you can configure a maximum of five DHCP destinations The initial DHCP broadcast request is sent to all of the configured destinations Do not configure a relay destination on a circuit when the relay destination is directly connected to or reachable from one of the ports on the same circuit In this case the DHCP packets reach the relay destination through normal broadcast and a relay agent is not required Use the dhep relay to command to specify the DHCP relay destination address This command is available in circuit configuration mode Enter an IP address in dotted decimal notation For example to add a destinatio
17. address VIP or virtual interface Invalid The number of invalid or bad ARP packets Replies In The number of received ARP reply packets I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol WE Showing IP Configuration Information Table 6 5 Field Descriptions for the show ip statistics Command continued Field Description Replies Out The sending ARP reply packet count In Off Subnet The number of received ARP packets with sender or target addresses outside of the subnet range of the receiving interface Unresolved The number of processed IP frames with unresolved next hop MAC addresses Resetting IP Statistics To set the global IP TCP UDP statistics for the CSS to zero use the zero ip statistics command in any mode This command sets the TCP UDP statistics displayed by the show ip statistics command to zero For more information about the show ip statistics command see the Showing IP Statistics section Showing a Summary of IP Global Statistics Use the show ip summary command to display a summary of IP global statistics The statistics include data on reachable and total routes reachable and total hosts memory in use for each and total IP routing memory in use Table 6 6 describes the fields in the show ip summary command output Table 6 6 Field Descriptions for the show ip summary Command Field Descri
18. and both assume root status If a spanning tree loop is detected the Catalyst switch goes into blocking mode on one of its looped ports I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter2 Configuring Spanning Tree Bridging forthe CSS E css Spanning Tree Bridging Quick Start This chapter contains the following major sections e CSS Spanning Tree Bridging Quick Start e Configuring Spanning Tree Bridge Aging Time e Configuring Spanning Tree Bridge Forward Time e Configuring Spanning Tree Bridge Hello Time e Configuring Spanning Tree Bridge Max Age e Configuring Spanning Tree Bridge Priority e Disabling Bridge Spanning Tree e Showing Bridge Configurations For details about configuring spanning tree bridging parameter for an Ethernet interface or for a trunked Ethernet interface and VLAN pair refer to Chapter 1 Configuring Interfaces and Circuits CSS Spanning Tree Bridging Quick Start Table 2 1 provides a quick overview of the steps required to globally configure spanning tree bridging for the CSS Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 2 1 Table 2 1 Spanning Tree Bridging Configuration Quick Start Task and Command Example 1 Set the bridge filtering database aging time in seconds for the CSS config
19. and whether services are active or suspended to make accurate advertisement decisions on VIPs Specified routes related to VIPs are only advertised if both of the following conditions are true e At least one of the related VIPs in a content rule or source group is active e At least one service related to an active VIP is available on a content rule If you configured the CSS for box to box redundancy be aware that only the master CSS not the backup CSS advertises the VIP We recommend that you use the 32 prefix in the ospf advertise command to specify VIPs individually Specifying entire subnets does not enable the CSS to make proper decisions on advertising the VIPs The advertisement must match or fit entirely within a VIP range to make proper decisions If the OSPF advertise IP address range and the VIP range overlap or the OSPF advertise range encapsulates that is is larger than or doesn t match the VIP range then the route is advertised unconditionally The following flow chart shows the steps required for OSPF to advertise an IP address If the IP address is a VIP the flowchart shows the conditions that must be met for OSPF to advertise the VIP Cisco Content Services Switch Routing and Bridging Configuration Guide Em OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Start gt Is OSPF Enabled No Address IS NOT advertised Is the corresponding virtual Router ma
20. bridging VLAN trunk status list of valid Ethernet interfaces interface duplex and speed values interface statistics and errors on an Ethernet interface This section includes the following topics e Showing Bridge Configurations e Showing Trunking Configurations e Showing Interface Information e Showing Interface Duplex and Speed e Showing Interface Statistics e Showing Ethernet Interface Errors Showing Bridge Configurations The CSS enables you to show bridging information for a specific VLAN in the CSS Use the show bridge command to display this bridging information The syntax for this command is show bridge forwardinglstatus v an_number The options and variables are as follows e forwarding Displays the bridge forwarding table including the VLAN number the MAC addresses and port numbers e status Displays the bridge spanning tree status including the Spanning Tree Protocol STP state designated root bridge ID root maximum age hello time and forward delay and port information including state VLAN root and port cost and designated root and port number e vlan_number Displays the forwarding table or spanning tree status for the specified VLAN number To see a list of VLAN numbers enter show bridge forwarding status oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces To displa
21. circuit is 108 interface speed For a Gigabit Ethernet interface the value is 1 For a 10 100 Mbps Fast Ethernet interface the value is 10 For example to set a cost of 25 enter config circuit ip VLAN6 3 1 2 2 ospf cost 25 To reset the packet cost for the interface to the default value enter config circuit ip VLAN6 3 1 2 2 no ospf cost Setting the Dead Router Interval The interface declares a neighbor router is dead if the interface does not receive hello packets from the router before the dead interval expires Use the ospf dead command to set the dead router interval for an interface The dead router interval is in seconds This value must be a multiple of the hello interval and the value must be the same for all routers attached to a common network Enter a number from 1 to 2 147 483 647 The default is 40 For example to set the dead router interval to 100 seconds enter config circuit ip VLAN6 3 1 2 2 ospf dead 100 To reset the dead router interval to its default of 40 seconds enter config circuit ip VLAN6 3 1 2 2 no ospf dead Setting the Hello Packet Interval Router interfaces periodically transmit hello packets to identify and maintain communications with their neighbors When a router detects its own address in another router s hello packet the two routers establish two way communications as neighbors oL 4580 01 Cisco Content Services Switch Routing and Bridging Configurat
22. command inserts the IP address of each router along a path into the IP header I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol E Configuring Box to Box Redundancy The CSS does not load balance TCP or UDP packets with IP options that are destined to a VIP address These packet types are dropped and the CSS returns an ICMP destination port unreachable error This behavior exists regardless of the state enabled or disabled of the ip record route and ip source route commands The CSS however does respond to ICMP packets that are destined to a VIP address The CSS also responds to TCP or UDP packets that include IP options that are destined to a local circuit address or require that a routing decision be made To disable the processing of frames with the record route option the default behavior enter config no ip record route Configuring Box to Box Redundancy Box to box redundancy provides chassis level redundancy between two identically configured CSSs Refer to the Cisco Content Services Switch Redundancy Guide for information about configuring box to box redundancy Use the ip redundancy command to enable box to box redundancy The CSS does not support simultaneous box to box redundancy and VIP or interface redundancy configurations For example config ip redundancy To disable box to box redundancy enter config
23. config cdp run To disable CDP transmissions on the CSS enter config no cdp run CDP Hold Time The CDP hold time is the amount of time a receiving device retains the CDP information sent by the CSS time to live information before discarding this information If a neighboring device does not receive a CDP message before the hold time expires the neighboring device drops the CSS as a neighbor By default the hold time is 180 seconds To specify the hold time use the cdp holdTime global configuration command Valid entries are 10 to 255 seconds To specify a CDP hold time of 255 seconds for the receiving device enter config cdp holdTime 255 To reset the CDP hold time back to the default value of 180 seconds enter config no cdp holdTime oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter7 Configuring the Cisco Discovery Protocol Hi Setting the CDP Transmission Rate Setting the CDP Transmission Rate By default the frequency at which the CSS transmits CDP packets to all receiving CDP compatible devices is 60 seconds To specify the frequency at which the CSS transmits CDP packets to all receiving CDP compatible devices use the cdp timer global configuration command Valid entries are 5 to 254 seconds To change the CDP transmission rate for the CSS to 120 seconds enter config cdp timer 120 To reset the CDP timer to the default rate of 60 seconds
24. connect the CSS to the Internet The commands to configure interfaces on the CSS 11501 differ slightly from the commands to configure interfaces on the CSS 11503 or CSS 11506 because they require a slot port designation The CSS 11501 does not use the slot port designation This section includes the following topics e Configuring an Interface e Entering a Description for the Interface e Configuring Interface Duplex and Speed e Setting Interface Maximum Idle Time e Bridging an Interface toa VLAN e Specifying VLAN Trunking for an Interface e Configuring Spanning Tree Bridging for a VLAN or a Trunked Interface e Configuring Port Fast on an Interface e Showing Interface Configurations e Shutting Down an Interface e Shutting Down All Interfaces e Restarting an Interface e Restarting All Interfaces Cisco Content Services Switch Routing and Bridging Configuration Guide Pte g OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces W Configuring an Interface To configure an Ethernet interface use the interface command Enter the interface name as follows e CSS 11501 Enter the interface name in interface port format for example el for Ethernet interface port 1 e CSS 11503 or CSS 11506 Enter the interface format in slot port format for example 3 1 for Ethernet port 1 on the I O module in slot 3 For example to configure interface port 1 on a CSS 11501 access interface mode for the p
25. describes the fields in the show ospf areas command output Table 3 3 Field Descriptions for the show ospf areas Command Field Description Area ID The ID for the area Type The area type Transit or Stub SPF Runs The number of times the area calculated the SPF Area Border Routers The number of ABRs including the CSS AS Boundary The number of ASBRs including the CSS if applicable Routers LSAs The number of link state advertisements in the database Summaries The capability of summarized LSAs in the stub area if applicable Showing Global Statistics To show OSPF global statistics enter show ospf global Table 3 4 describes the fields in the show ospf global command output Table 3 4 Field Descriptions for the show ospf global Command Field Description Router ID The router ID of the CSS Admin Status The state of OSPF on the CSS Enabled or Disabled Area Border Router Indicates whether the CSS is an ABR True indicates the CSS is an ABR otherwise the field displays False oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information Table 3 4 Field Descriptions for the show ospf global Command Field Description AS Boundary Router Indicates whether the CSS is an ASBR True indicates the CSS is an ASBR otherwise the field
26. displays False External LSAs The number of external LSAs currently contained in the database LSA Sent The number of LSAs sent by the CSS LSA Received The number of LSAs received by the CSS Showing IP Interface Information To show OSPF interfaces enter show ospf interfaces Table 3 5 describes the fields in the show ospf interfaces command output Table 3 5 Field Descriptions for show ospf interfaces Command Field Description IP Address The IP address for the OSPF IP interface Admin State Administrative state of OSPF on the interface as affected by the IP interface ospf enable command Area The area assigned to the interface Type The OSPF interface type always broadcast Cisco Content Services Switch Routing and Bridging Configuration Guide P3320 i OL 4580 01 _ Chapter 3 Configuring Open Shortest Path First OSPF Showing OSPF Information W Table 3 5 Field Descriptions for show ospf interfaces Command continued Field Description State The functional level of an interface The state determines whether full adjacencies are allowed to form over the interface The states include e Down The initial interface state In this state the lower level protocols indicate the interface is unusable No protocol traffic is sent or received on the interface e Waiting The router is trying to determine the identity of the backup designated router for the netw
27. for TCP and UDP is performed on a per flow basis and all packets for a particular flow take the same path Forwarding IP Subnet Broadcast Addressed Frames To enable the CSS to forward subnet broadcast addressed frames use the ip subnet broadcast command For example config ip subnet broadcast To disable forwarding of subnet broadcast addressed frames the default behavior enter config no ip subnet broadcast I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter6 Configuring the Internet Protocol W Configuring IP Unconditional Bridging A Caution Enabling the CSS to forward the subnet broadcast can make the subnet susceptible to smurf attacks an attacker sends an ICMP echo request frame using a subnet broadcast address as a destination and a forged address as the source If a smurf attack is successful all the destination subnet hosts reply to the echo and flood the path back to the source By disabling subnet broadcast forwarding the original echo never reaches the hosts Configuring IP Unconditional Bridging By default the routing table lookup of a destination path by the CSS on received packets overrides bridging decisions to be made for those packets If the routing table specifies that the CSS use a different physical Ethernet port than what is specified for port bridging the CSS ignores the bridging decision If you have a networ
28. most current Cisco documentation on the World Wide Web at this URL http www cisco com univercd home home htm You can access the Cisco website at this URL http www cisco com International Cisco websites can be accessed from this URL http www cisco com public countries_languages shtml Ordering Documentation You can find instructions for ordering documentation at this URL http www cisco com univercd cc td doc es_inpck pdi htm You can order Cisco documentation in these ways e Registered Cisco com users Cisco direct customers can order Cisco product documentation from the Ordering tool http www cisco com en US partner ordering index shtm e Nonregistered Cisco com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters California USA at 408 526 7208 or elsewhere in North America by calling 800 553 NETS 6387 oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Preface HZ Documentation Feedback Documentation Feedback You can submit e mail comments about technical documentation to bug doc cisco com You can submit comments by using the response card if present behind the front cover of your document or by writing to the following address Cisco Systems Attn Customer Document Ordering 170 West Tasman Drive San Jose CA 95134 9883 We appreciate your comments Obtaining Technical Assista
29. no ip redundancy Configuring IP Equal Cost Multipath To set the equal cost multipath ECMP selection algorithm and the preferred reverse egress path use the ip eemp command The CSS supports a maximum of 15 ECMP paths The syntax for this global configuration command is ip ecmp address no prefer ingress roundrobin Cisco Content Services Switch Routing and Bridging Configuration Guide lt OL 4580 01 Chapter 6 Configuring the Internet Protocol Forwarding IP Subnet Broadcast Addressed Frames W The options for this global configuration mode command are as follows e address Choose among alternate paths based on IP addresses For example config ip ecmp address e no prefer ingress Do not prefer the ingress path of a flow for its reverse egress path By default the ingress path for a flow is the preferred egress path This means that the preferred interface over which to reply to a client is the interface on which the CSS originally received the request from the client For example config ip ecmp no prefer ingress To reset the ingress path of a flow for its preferred reverse egress path enter config no ip ecmp no prefer ingress e roundrobin Alternate between equal paths in roundrobin fashion For example config ip ecmp roundrobin Note The CSS applies the ECMP selection algorithm for non TCP UDP packets for example ICMP on a packet by packet basis Multipath selection
30. service disabling 6 6 interface auto negotiate 1 8 bridging to VLAN 1 11 configuring 1 6 1 7 configuring Port Fast 1 16 describing 1 7 displaying statistics 1 24 duplex and speed configuring 1 8 enabling BPDU guard 1 17 enabling Port Fast 1 17 layer restarting 1 30 maximum idle time configuring 1 10 overview 1 1 quick start 1 4 restarting 1 30 RIP configuring 1 39 running config example 1 5 showing 1 22 showing duplex and speed 1 23 showing Ethernet errors 1 27 shutting down 1 29 speed configuring 1 8 starting 1 30 trunking to VLAN 1 11 IP address removing from circuit 1 32 box to box redundancy configuring 6 8 configuration showing 6 13 record route configuring 6 7 route configuring 6 3 route displaying configurations 6 15 route removing 6 5 running config example 6 3 source route configuring 6 7 statistics displaying configurations 6 16 subnet broadcast configuring 6 9 summary displaying 6 16 unconditional bridging 6 10 IP ECMP address configuring 6 8 no prefer ingress configuring 6 8 round robin configuring 6 9 IP interfaces displaying configurations 6 14 showing 1 38 stopping RIP 1 39 E Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 O opportunistic layer 3 forwarding configuration example 6 10 configuring 6 10 OSPF advertising other routes through OSPF 3 21 area border routers 3 5 areas 3 4 autonomous system 3 4 aut
31. the CSS uses the originated packets route A ping response sent from the CSS does not use the originated packets route Cisco Content Services Switch Routing and Bridging Configuration Guide oa B OL 4580 01 Chapter 6 Configuring the Internet Protocol Configuring an IP Route Wi e firewall Configures a firewall route The firewall option instructs the CSS to use firewall load balancing for this route You can optionally set the administrative distance amp Note The CLI prevents you from configuring IP static routes with identical destinations and identical administrative costs for IP static routes that are firewall routes and IP static routes that are not firewall routes e index An existing index number for the firewall route For information on configuring a firewall index see the ip firewall command refer to the Cisco Content Services Switch Security Configuration Guide For example to configure a static IP route to destination network address 192 168 0 0 16 and a next hop address of 192 167 1 1 enter config ip route 192 168 0 0 16 192 167 1 1 For example to configure a default IP route using a destination address of 0 0 0 0 0 and a next hop address of 192 167 1 1 enter config ip route 0 0 0 0 0 192 167 1 1 For example to configure a blackhole route enter config ip route 192 168 1 0 24 blackhole For example to configure a firewall IP route with an index number of
32. the Ethernet interface port in the CSS Auto indicates the speed is automatically negotiated Configured Duplex The configured duplex for the Ethernet interface port in the CSS Auto indicates the duplex is automatically negotiated Actual Speed The actual speed for the Ethernet interface port in the CSS Actual Duplex The configure duplex for the Ethernet interface port in the CSS Link The link status Up or Down Rev Revision number of the chip Partner Auto Indicates whether auto negotiation is available on the link partner Showing Interface Statistics Use the show mibii command to display the extended 64 bit MIB II statistics for a specific interface or for all interfaces in the CSS The CSS Enterprise ap64Stats MIB defines these statistics The Gigabit Ethernet module port statistics are an aggregation of all ports on the module To display the RFC 1213 32 bit statistics include the 32 suffix To display extended MIB II statistics for a specific interface in the CSS enter the show mibii command with the interface name To see a list of interfaces in the CSS enter show mibii amp Note Refer to the Cisco Content Services Switch Administration Guide for information on CSS MIBs Cisco Content Services Switch Routing and Bridging Configuration Guide i24 E OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces Ti Table 1 8 describ
33. you specify The DSPAN port must reside on the same module as the SSPAN port S Note Once you configure a port as a DSPAN port the CSS removes it from all VLANs and ignores ingress traffic on that port In addition the DSPAN port does not participate in spanning tree protocol STP or routing protocols such as RIP and OSPF copyBoth CSS copies to the DSPAN port packets that the SSPAN port transmits to the network egress traffic and packets that the SSPAN port receives from the network ingress traffic Cisco Content Services Switch Routing and Bridging Configuration Guide iae E OL 4580 01 Chapter1 Configuring Interfaces and Circuits Configuring the Switched Port Analyzer Feature i amp Note Ifthe combined traffic bandwidth of the ingress and egress traffic of the SSPAN port exceeds the bandwidth of the DSPAN port the DSPAN port may become oversubscribed e copyTxOnly CSS copies to the DSPAN port only those packets that the SSPAN port transmits to the network egress traffic e copyRxOnly CSS copies to the DSPAN port only those packets that the SSPAN port receives from the network ingress traffic For example to copy all received and transmitted packets on SSPAN port 3 of the T O module in slot 3 to DSPAN port 12 on the same module enter config setspan src_port 3 3 dest_port 3 12 copyBoth To return the SPAN feature to its default state of disabled use the no setspan command For ex
34. 0 ospf enable Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 343 Chapter3 Configuring Open Shortest Path First OSPF HI OSPF Configuration ina Startup Configuration File Cisco Content Services Switch Routing and Bridging Configuration Guide M344 OL 4580 01 CHAPTER Configuring the Address Resolution Protocol This chapter describes how to configure Address Resolution Protocol ARP to statically configure the IP to Media Access Control MAC translations necessary for the CSS to send data to network nodes You can configure static ARP mapping for any of the CSS Ethernet interface ports This chapter contains the following major sections ARP Configuration Quick Start Configuring ARP Mapping Configuring ARP Timeout Configuring ARP Wait Updating ARP Parameters Clearing ARP Parameters Showing ARP Information oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter4 Configuring the Address Resolution Protocol HZ ARP Configuration Quick Start ARP Configuration Quick Start Table 4 1 provides a quick overview of the steps required to configure a static ARP map Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 4 1 Table 4 1 ARP Configuration Quick Start Task and Command Ex
35. 1 1 1 Area Border Router1 Router4 Routers Router5 Area Area 0 0 0 0 backbone Border Router2 Area 1 1 1 2 stub area Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 TE Chapter3 Configuring Open Shortest Path First OSPF HZ OSPF Overview Autonomous System Areas Backbone Area The autonomous system AS is a collection of networks under the same administrative control that share the same routing information with each other An AS is also referred to as a routing domain Figure 3 1 shows two ASs AS A and AS B An AS can consist of one or more OSPF areas Areas allow the subdivision of an AS into smaller more manageable networks or sets of adjacent networks As shown in Figure 3 1 AS A consists of three areas area 0 0 0 0 area 1 1 1 1 and area 1 1 1 2 OSPF hides the topology of an area from the rest of the AS An area s network topology is visible only to routers inside that area the network topology is not visible to routers outside the area When OSPF routing is within an area this is called intra area routing This routing limits the amount of link state information flooding onto the network thereby reducing routing traffic OSPF routing also reduces the size of the topology information in each router which conserves processing and memory requirements in each router Conversely the routers within an area cannot see detailed network structures ou
36. 3 and an administrative distance of 2 enter config ip route 192 168 1 0 24 firewall 3 2 To remove a static route enter config no ip route 0 0 0 0 O 10 0 1 1 To disable the dropping of packets to a blackhole route enter config no ip route 192 168 1 0 24 blackhole To remove a firewall route enter config no ip route 192 168 1 0 24 firewall 3 oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol W Disabling an Implicit Service for the Static Route Next Hop Disabling an Implicit Service for the Static Route Next Hop By default the CSS establishes an implicit or internal service for the gateway address when a static route is defined When you do not want the CSS to start an implicit service for the next hop of a static route use the ip no implicit service command The ip no implicit service command specifies that no implicit service is established to the next hop of the static route which disables the internal service ICMP keepalive In this case if the ARP address for the next hop is not known to the CSS the address will not appear in the routing table The purpose of the implicit service to the next hop of a static route is to monitor the availability of the next hop to forward data traffic When the ip no implicit service command is in effect traffic is forwarded to the next hop even when the next hop is una
37. 7 Optional Display all circuit information for circuits that are currently active config if 2 1 show circuit all 8 Optional Display the interface configuration config if 2 1 show interface config if 2 1 exit 9 Configure circuits as required Assign an IP address and subnet mask to each circuit config circuit VLAN1 config circuit VLAN1 ip address 10 3 6 58 24 config circuit VLAN3 config circuit VLAN3 ip address 10 3 6 60 24 config circuit ip VLAN3 10 3 6 60 exit 10 Optional Display the circuit configuration config circuit VLAN1 show circuit all 11 Recommended Save your configuration changes to the startup configuration file If you do not save the running configuration all configuration changes are lost upon reboot copy running config startup config The following running configuration example shows the results of entering the commands in Table 1 1 KEK KKKKKKKKKKKKKKKKKKK INTERFACE kkkkkkxkxkxkxkxkkkkkkkkkxxkx k interface 2 1 phy 100Mbits FD bridge vlan 2 kkkkxkxkxkxkxkkkkkkkkkkkkkxxkxk CIRCUIT kkkkkxkxkxkxkxkkkkkkkxkxkkkkxk circuit VLAN1 ip address 10 3 6 58 255 255 255 255 circuit VLAN3 ip address 10 3 6 60 255 255 255 255 Cisco Content Services Switch Routing and Bridging Configuration Guide oL 4580 01 CEN Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces Configuring Interfaces Interfaces are ports that enable you to connect devices to the CSS and
38. CSS such as bridge aging time forward delay time hello time interval and maximum age refer to Chapter 2 Configuring Spanning Tree Bridging for the CSS Cisco Content Services Switch Routing and Bridging Configuration Guide Pia E OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces W Configuring Spanning Tree Bridge Pathcost The path cost is the contribution of the interface to the vast path cost towards the spanning tree root Use the bridge pathcost command to set the spanning tree path cost for an Ethernet interface or for a trunked Ethernet interface Enter an integer from 1 to 65535 The default is dynamically configured based on the interface speed For example to set a path cost of 9 for e7 on the CSS 11501 enter config if e7 bridge pathcost 9 For example to set a path cost of 2 for the I O module in slot 1 Ethernet port 1 in VLAN3 enter config if vlan 1 1 3 bridge pathcost 2 To restore the default path cost enter config if vlan 1 1 3 no bridge pathcost Configuring Spanning Tree Bridge Port Priority To set the spanning tree bridge port priority for an Ethernet interface or for a trunked Ethernet interface se the bridge port priority command If the CSS has a bridge port priority that is lower than all other switches it will be automatically selected by the other switches as the root switch Enter an integer from 0 to 255 The default is 128 For ex
39. Cisco SYSTEMS Cisco Content Services Switch Routing and Bridging Configuration Guide Software Version 7 30 January 2004 Corporate Headquarters Cisco Systems Inc 170 West Tasman Drive San Jose CA 95134 1706 USA http www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 526 4100 Text Part Number OL 4580 01 WS THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE ALL STATEMENTS INFORMATION AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND EXPRESS OR IMPLIED USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California Berkeley UCB as part of UCB s public domain version of the UNIX operating system All rights reserved Copyright 1981 Regents of the University of California NOTWITHSTANDING ANY OTHER WARRANTY HEREIN ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED AS IS WITH ALL FAULTS CISCO AND THE ABOVE NAMED SUPPLIERS DISCLAIM ALL WAR
40. Control Message Protocol ICMP redirect messages is enabled or disabled The default state is Enabled ICMP Unreachable Whether the transmission of ICMP Destination Unreachable messages is enabled or disabled The default state is enabled RIP Whether RIP is enabled or disabled Cisco Content Services Switch Routing and Bridging Configuration Guide Pea E OL 4580 01 Chapter 6 Configuring the Internet Protocol Showing IP Configuration Information W Showing IP Routing Information Use the show ip routes command to display IP routing information The syntax and options for this command are as follows show ip routes Displays the entire routing table including host IP address next hop interface route type protocol age in seconds and metric show ip routes firewall Displays all firewall routes show ip routes local Displays all local routes show ip routes ospf Displays all OSPF routes show ip routes rip Displays all RIP routes show ip routes static Displays all static routes show ip routes summary Displays the total number of OSPF routes including a breakdown of Intra Inter and Ext routes RIP routes local routes static routes and firewall routes show ip routes ip_or_host to ip_or_host mask_or_prefix Displays information about a route to a destination a specific route or routes in a range The variables are as follows ip_or_host The IP address of the h
41. KKK KKK KKK KK KKK KR KK KK KK KK ospf enable ospf advertise 1 1 1 10 advertise redundant VIP ospf advertise 2 1 1 1 advertise IP address of service s1 ospf advertise 1 1 1 100 advertise IP address of critical service c100 ospf advertise 99 99 99 99 advertise simple IP address not tied to anything record LRA KK RK KK RK KR KK KR RK KE KKEEK CTRCULT 8 eR KR KKK KKK KKK KKK KK KK KK KKK circuit VLAN1 ip address 1 1 1 200 255 0 0 0 ip virtual router 1 ip redundant vip 1 1 1 1 10 redundant VIP ip critical service 1 c100 I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Bi Chapter3 Configuring Open Shortest Path First OSPF E Configuring OSPF on the CSS kK KR RRR RK KR KKK RR KKK KKEKEKK SCRRVICK KKK RK KKK KKK KKK KKK KKK KK KKK service c100 ip address 1 1 1 100 IP address for critical service active service sl ip address 2 1 1 1 IP address for service s1 keepalive method get keepalive type http active service s2 ip address 2 1 1 2 keepalive method get keepalive type http active Lk KK RR KR RK KR RK KR RK KR KKK KKK OWNER KKK KKK RK KKK KKK KKK KKK KR KKK owner adminl content r1 add service s1 add service s2 vip address 1 1 1 10 redundant VIP equals content VIP active Advertising a Default ASE Route Routers use default routes when no additional routes exist to a particular AS external destination By default a
42. P routes You could also advertise VIP addresses for content as AS external routes After performing the global OSPF configuration you must configure an OSPF IP interface see the OSPF IP Interface Configuration Quick Start section before the CSS can participate in OSPF routing For more information on configuring global OSPF parameters see the Configuring OSPF on the CSS section Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a Chapter3 Configuring Open Shortest Path First OSPF HZ CSS OSPF Configuration Quick Start Table 3 1 Global OSPF Configuration Quick Start Task and Command Example 1 Configure the area router ID for the CSS in global configuration mode In this example the CSS router ID is 121 23 21 1 config ospf router id 121 23 21 1 Optional If the CSS area is other than the backbone area enter the area ID for the CSS In this example the area ID is 1 1 1 1 config ospf area 1 1 1 1 The default ID is 0 0 0 0 for the backbone area To define a stub area enter the stub option after the area ID Optional If you want the CSS to advertise external routes define the CSS as an AS boundary router For example config ospf as boundary Optional If the CSS is an ABR you can advertise VIP addresses for content as OSPF ASE routes To advertise the VIP address 192 168 4 15 with a default cost of 1 and the default type of ASE type2 ente
43. RANTIES EXPRESSED OR IMPLIED INCLUDING WITHOUT LIMITATION THOSE OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING USAGE OR TRADE PRACTICE IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES INCLUDING WITHOUT LIMITATION LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES CCIP CCSP the Cisco Arrow logo the Cisco Powered Network mark Cisco Unity Follow Me Browsing FormShare and StackWise are trademarks of Cisco Systems Inc Changing the Way We Work Live Play and Learn and iQuick Study are service marks of Cisco Systems Inc and Aironet ASIST BPX Catalyst CCDA CCDP CCIE CCNA CCNP Cisco the Cisco Certified Internetwork Expert logo Cisco IOS the Cisco IOS logo Cisco Press Cisco Systems Cisco Systems Capital the Cisco Systems logo Empowering the Internet Generation Enterprise Solver EtherChannel EtherSwitch Fast Step GigaStack Internet Quotient IOS IP TV iQ Expertise the iQ logo iQ Net Readiness Scorecard LightStream MGX MICA the Networkers logo Networking Academy Network Registrar Packet PIX Post Routing Pre Routing RateMUX Registrar ScriptShare SlideCast SMARTnet StrataView Plus Stratm SwitchProbe TeleRouter The Fastest Way to Increase Your Intern
44. Start 8 2 6 2 ip config Command ip routes Command ip statistics Command ip summary Command 7 2 6 13 ip interfaces Command 6 14 6 15 6 16 6 20 Field Descriptions for the show dhcp relay agent global Command 8 4 E Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Preface This guide provides instructions to configure interfaces and circuits spanning tree bridging Open Shortest Path First OSPF Address Resolution Protocol ARP Routing Information Protocol RIP Internet Protocol IP routing and Dynamic Host Configuration Protocol DHCP Information in this chapter applies to all 11500 Series Content Services Switch CSS models except where noted This preface contains the following major sections Audience How to Use This Guide Related Documentation Symbols and Conventions Obtaining Documentation Documentation Feedback Obtaining Technical Assistance Obtaining Additional Publications and Information oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Preface W Audience Audience This guide is intended for the following trained and qualified service personnel who are responsible for configuring the CSS e Web master e System administrator e System operator How to Use This Guide This guide is organized as follows Chapter Description Chapter 1 Configuring Configure the CSS interface po
45. Table 3 8 Table 3 9 Table 3 10 Table 3 11 Table 4 1 Table 4 2 Table 4 3 Table 4 4 Table 4 5 Table 5 1 Table 5 2 Table 5 3 Table 5 4 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Table 7 1 Table 8 1 Table 8 2 e e e e e e e e B e IP e e Fie Fie ie ie ie F F F F ie d Descri d Descri d Descri d Descri d Descri d Descri ARP Config d Descri d Descri d Descri d Descri Configu d Descri d Descri d Descri d Descri d Descri d Descri d Descri d Descri pt pt pti pti pti pti pti pti uration Quick Start pti pti pti pti ration Quick Start pti pti IP Configuration Quick Start pti pti ions for the show pti pti ons for the show ospf Isdb Command ons for the show ospf ase Command 3 34 3 36 ons for the show ospf advertise Command 3 37 ons for the show ospf redistribute Command 3 38 ons for the show ospf range Command ons for show ospf neighbors Command 4 2 ons for the show arp Command 4 7 3 39 3 40 ons for the show arp summary Command 4 7 ons for the show arp config Command 4 8 ons for the show arp management port Command 4 8 5 2 ions for the show rip Command 5 5 ons for the show rip globals Command 5 6 ons for the show rip statistics Command 5 7 ons for the show ons for the show ons for the show ons for the show CDP Configuration Quick Start DHCP Relay Agent Configuration Quick
46. To disable the IP interfaces on a circuit enter config circuit ip VLAN7 172 16 6 58 no enable To reenable the IP interface on a circuit use the enable command For example config circuit ip VLAN7 172 16 6 58 enable Configuring Router Discovery Protocol Settings for a Circuit The CSS allows you to enable Router Discovery Protocol RDP settings and define a router discovery preference for each circuit VLAN RDP announces the existence of the CSS to hosts by periodically multicasting or broadcasting a router advertisement to each interface Use the circuit command to enter the circuit configuration mode before configuring RDP for a circuit VLAN Cisco Content Services Switch Routing and Bridging Configuration Guide P34 OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Circuits W This section includes the following topics e Configuring the Router Discovery Lifetime e Configuring Router Discovery Limited Broadcast e Configuring the Router Discovery Max Advertisement Interval e Configuring the Router Discovery Min Advertisement Interval Configuring the Router Discovery Lifetime By default the maximum age that hosts remember router advertisements is three times the max advertisement interval Use the router discovery lifetime command to configure the maximum age in seconds Enter an integer between 0 and 9000 seconds For example config circuit VLAN7 router discovery li
47. W Updating ARP Parameters To update the file containing hosts reachable through ARP use the update arp command This command is available only in SuperUser mode For example update arp file Clearing ARP Parameters The CSS enables you to clear ARP parameters for the ARP file or ARP cache To clear the file that contains known hosts reachable through ARP use the clear arp file command This command is available only in SuperUser mode For example clear arp file Use the clear arp cache command to delete dynamic entries from the ARP cache To specify an address for the single ARP entry you want to remove from the ARP cache use the clear arp cache ip_or_host command Enter the address in either dotted decimal IP notation for example 192 168 11 1 or mnemonic host name format for example myhost mydomain com For example clear arp cache 192 168 11 1 I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter4 Configuring the Address Resolution Protocol W Showing ARP Information Showing ARP Information Use the show arp command to display ARP information To show static ARP mapping when you use the show arp command the IP route must exist in the routing table The syntax for this global configuration mode command is show arp configifilebmanagement portlsummarylip_or_host The syntax and options for the command are as follows amp show arp Display
48. a trunked Ethernet interface Ensure you configure the spanning tree bridging parameters the same on all switches running STP in the network Note When connecting a Cisco Catalyst switch to a CSS using an 802 1Q trunk and the Spanning Tree Protocol the Catalyst runs a spanning tree instance for each VLAN When you configure an 802 1Q trunk on an Ethernet interface for the Catalyst switch the bridge protocol data units BPDUs are tagged with the corresponding VLAN ID and the destination MAC address changes from the standard 01 80 C2 00 00 00 to the proprietary 01 00 0c cc cc cd This modification allows Cisco switches operating in a non Cisco a mix of other vendors 802 1Q trunk environment to maintain spanning tree states for all VLANs Although the CSS maintains a spanning tree instance for each VLAN as well the CSS uses the standard 01 80 C2 00 00 00 destination MAC address for all BPDUs tagged or untagged When you connect a Cisco Catalyst switch to a CSS over an 802 1Q trunk the result is that neither switch recognizes the other s BPDUs and both assume root status If a spanning tree loop is detected the Catalyst switch goes in to blocking mode on one of its looped ports This section includes the following topics e Configuring Spanning Tree Bridge Pathcost e Configuring Spanning Tree Bridge Port Priority e Configuring Spanning Tree Bridge State For details about globally configuring spanning tree bridging parameters for the
49. ample 1 Define a static ARP mapping config arp 192 168 11 1 00 60 97 d5 26 ab e2 2 Set the time in seconds to hold an ARP resolution result Note that this timeout period affects dynamic ARP entries Static ARP entries are permanent and not affected by this timeout period config arp timeout 120 3 Set the time in seconds to wait for an ARP resolution config arp wait 15 4 Optional Update the file containing hosts reachable through ARP update arp file Note This command is available only in SuperUser mode 5 Optional Clear ARP parameters for the ARP file or ARP cache that contains known hosts reachable through ARP clear arp file 6 Recommended Display ARP information For example to display the complete ARP resolution table enter show arp The following running configuration example shows the results of entering the commands in Table 4 1 LKR KKKKKKKKKKKKKKKKKKK KKK KKK GLOBAL kkkkkkkkkkkkkkkkkkkkkkkkkxkxk arp 192 168 11 1 00 60 97 d5 26 ab e2 arp timeout 120 arp wait 15 Cisco Content Services Switch Routing and Bridging Configuration Guide a2 B OL 4580 01 Chapter4 Configuring the Address Resolution Protocol Configuring ARP Mapping W Configuring ARP Mapping To define a static ARP mapping use the arp command The syntax for this global configuration mode command is arp ip_or_host mac_address interface vlan The variables and options ar
50. ample show ip interfaces Table 1 11 describes the fields in the show ip interfaces command output Table 1 11 Field Descriptions for the show ip interfaces Command Field Description Circuit Name The name of the circuit associated with the IP interface State The state of the IP interface The possible states are as follows e Active 1 The interface is up e Disabled The interface is disabled e NoCircuit The interface is waiting for an underlying circuit IP Address The IP address assigned to the circuit Network Mask The network mask of the circuit Broadcast Address The broadcast IP address associated with the IP interface If left at zero the all ones host is used for numbered interfaces 255 255 255 255 is always used for unnumbered interfaces Redundancy Indicates whether the redundancy protocol is running on the interface The default state is Disabled ICMP Redirect Indicates whether the transmission of Internet Control Message Protocol ICMP redirect messages is Enabled or Disabled The default state is Enabled ICMP Unreachable Indicates whether the transmission of ICMP Destination Unreachable messages is enabled or disabled The default state is Enabled RIP Indicates whether RIP is Enabled or Disabled Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 _ Chapter 1 Configuring Interfaces and
51. ample To show the OSPF global configuration use the show ospf global command For example show ospf global If the Admin Status field is disabled use the ospf enable command to enable OSPF To show the route redistribution policy into OSPF use the show ospf redistribute command To show the configured static route redistribution policy enter show ospf redistribute To show the VIP addresses advertised as ASE routes use the show ospf advertise command For example show ospf advertise To view the CSS IP interface configuration use the show ospf interfaces command For example show ospf interfaces I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Bi Chapter3 Configuring Open Shortest Path First OSPF E Configuring OSPF on the CSS Configuring OSPF on the CSS This section includes the following topics e Configuring the OSPF Router ID e Enabling OSPF e Configuring an Area e Configuring Equal Cost Routes e Configuring Summarized Routes at an ABR e Configuring the CSS as an Autonomous System Boundary Router Configuring the OSPF Router ID Before you enable OSPF on the CSS configure the router ID Assigning a router ID to the CSS uniquely identifies it to other routers within the autonomous system In addition in the case of a priority tie when determining which router is the designated router the ID serves as a tie breaker in the designated router election F
52. ample to disable SPAN on the source and destination ports on CSS module 3 in the example above enter config no setspan src_port 3 3 dest_port 3 12 Verifying the SPAN Configuration on a CSS To verify the SPAN configuration on a CSS use the show setspan command Table 1 15 describes the fields in the show setspan command output Table 1 15 Field Descriptions for the show setspan Command Field Description SPAN Configuration Source Number of the SSPAN port whose traffic you want to monitor Destination Number of the DSPAN port to which the CSS copies the packets flowing through the SSPAN port Connect the network analyzer or RMON probe to this port Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 147 Chapter1 Configuring Interfaces and Circuits E Configuring the Switched Port Analyzer Feature Table 1 15 Field Descriptions for the show setspan Command continued Field Description Direction Direction of the traffic that you want to monitor at the source port The direction can be one of the following e copyBoth The CSS copies packets that are transmitted and received by the SSPAN port to the DSPAN port e copyTxOnly The CSS copies only packets transmitted egress traffic by the SSPAN port to the DSPAN port e copyRxOnly The CSS copies only packets received ingress traffic by the SSPAN port to the DSPAN port Cisco Content Se
53. ample to set a bridge port priority of 100 for e7 on the CSS 11501 enter config if e7 bridge port priority 100 For example to set a bridge port priority of 100 for the I O module in slot 1 Ethernet port 1 in VLAN3 enter config if vlan 1 1 3 bridge port priority 100 To restore the default port priority of 128 enter config if vlan 1 1 3 no bridge port priority oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces Configuring Spanning Tree Bridge State By default an Ethernet interface is set to the enabled bridge state Use the bridge state command to set the spanning tree bridge state for an Ethernet interface or for a trunked Ethernet interface For example to enable the bridge state for e7 on the CSS 11501 enter config if e7 bridge state enable For example to enable the bridge state for the I O module in slot 1 Ethernet port 1 in VLAN3 enter config if vlan 1 1 3 bridge state enable To disable the bridge state enter config if vlan 1 1 3 bridge state disable Configuring Port Fast on an Interface A The Port Fast feature immediately brings a CSS Ethernet interface port to the Spanning Tree Protocol STP forwarding state from a blocking state bypassing the listening and learning states You can specify Port Fast for ports connected to a single workstation o
54. an take effect To configure the CSS IP interface as an OSPF interface 1 Access the circuit configuration mode for the preconfigured circuit on which you want to create the IP interface For example if circuit VLAN6 already exists enter config circuit VLAN6 config circuit VLAN6 amp Note Refer to Chapter 1 Configuring Interfaces and Circuits for information on how to configure the CSS interfaces and circuits and bridge interfaces to VLANs 2 Create the IP interface to the circuit To create an IP address of 3 1 2 2 enter config circuit VLAN6 ip address 3 1 2 2 24 Create ip interface lt 3 1 2 2 gt y n y 3 Configure this circuit as an OSPF circuit Enter config circuit ip VLAN6 3 1 2 2 ospf Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 323 Chapter3 Configuring Open Shortest Path First OSPF WE Configuring OSPF ona CSS IP Interface Assigning an OSPF Area to the Interface After you configure the IP interface as an OSPF interface assign it to the area that you globally configured to the CSS The default area is the backbone area with the ID of 0 0 0 0 If the area is other than the backbone use the ospf area command to assign the interface to an OSPF area For example if the area is 0 0 0 1 enter config circuit ip VLAN6 3 1 2 2 ospf area 0 0 0 1 To reset the interface to the default backbone area enter config
55. and Specifying VLAN Trunking for an Interface To activate VLAN trunking for a CSS interface use the trunk command You specify all VLANs that include the specified port as part of the VLAN The trunk command also converts the link in to a trunk link Use the vlan command to specify the number of each VLAN to be associated with the Gigabit Ethernet or Fast Ethernet port Enter an integer from 1 to 4094 as the VLAN identifier oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces The following list defines the maximum number of VLANs supported by the specific CSS models e CSS 11501 and CSS 11503 A maximum of 256 VLANs per CSS and 64 VLANs per port FE or GE e CSS 11506 A maximum of 512 VLANs per CSS and 64 VLANs per port FE or GE The CSS software has a dependency when using the trunk command For trunking to be enabled all VLAN bridging commands for any active VLAN must first be disabled for the Gigabit Ethernet or Fast Ethernet interface by using the no bridge vlan no bridge port priority no bridge state and no bridge pathcost commands If you do not disable VLAN bridging on an interface the CSS software instructs you to do so When you specify the trunk command enter the word vlan in lowercase letters and include a space before the VLAN number for example vlan 2 The CSS automatically prompts you to crea
56. anging auto negotiate to 100Mbits FD the master CSS fails over to the backup CSS To prevent the failover from occurring first enter the no redundancy phy command on the interface change the port settings and then reenter the redundancy phy command For information about the redundancy phy command refer to the Cisco Content Services Switch Redundancy Guide Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces W Use the phy command to configure the duplex speed Fast Ethernet ports only and flow control Gigabit Ethernet ports only for the interface ports as follows e phy auto negotiate Resets the Fast Ethernet and Gigabit Ethernet ports to automatically negotiate port speed and duplex of incoming signals amp Note Pause mode during auto negotiation is not supported for the Fast Ethernet ports e phy auto negotiate enable disable Disables the Gigabit Ethernet interface from automatically negotiating duplex of incoming signals By default auto negotiation is enabled for all Gigabit Ethernet ports Gigabit Ethernet port auto negotiation remains enabled when a pause mode command is specified so the Gigabit Ethernet interface ports can act upon the link partner s flow control capability If it is necessary to disable auto negotiation for the Gigabit Ethernet port when using a pause mode enter th
57. ation mode For example to change the broadcast address on circuit VLAN7 enter config circuit ip VLAN7 172 16 6 58 broadcast 0 0 0 0 To reset the broadcast IP address to the default all ones host address enter config circuit VLAN7 172 16 6 58 no broadcast Cisco Content Services Switch Routing and Bridging Configuration Guide 132 OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Circuits W Configuring Circuit IP Redirects By default the transmission of Internet Control Message Protocol ICMP redirect messages is enabled To disable the transmission of ICMP redirect messages enter config circuit ip VLAN7 172 16 6 58 no redirects To reenable the transmission of ICMP redirect messages use the redirects command For example config circuit ip VLAN7 172 16 6 58 redirects Configuring Circuit IP Unreachables By default the transmission of ICMP Destination Unreachable is enabled To disable the transmission of ICMP Destination Unreachable messages enter config circuit ip VLAN7 172 16 6 58 no unreachables Use the unreachables command to enable the transmission of ICMP Destination Unreachable messages The default state is enabled For example config circuit ip VLAN7 172 16 6 58 unreachables Configuring Router Discovery Preference for a Circuit IP Interface To enable router discovery and configure the router discovery preference value for a circuit IP in
58. bit Ethernet to another designated port of the same type and on the same CSS module for analysis You can use SPAN for network troubleshooting or tuning using a network analyzer SPAN is sometimes referred to as port mirroring or port monitoring A SPAN session is the association of a destination port with a source port on the same CSS module The port that is monitored is called the source SPAN SSPAN port An SSPAN port consists of two components e Ingress path Network traffic entering the CSS The CSS copies to the monitoring port packets that the SSPAN port receives SSPAN Rx from the network e Egress path Network traffic leaving the CSS The CSS copies to the monitoring port packets that the SSPAN port transmits SSPAN Tx to the network SPAN can monitor the ingress path the egress path or both You can configure only one SSPAN port in a CSS chassis The port that monitors the SSPAN port is called the destination SPAN DSPAN port You can configure only one DSPAN port in a CSS chassis and it must have the following characteristics e Same speed as the SSPAN port e Same media type as the SSPAN port e Local physically resides on the same CSS module Once you configure a port as a DSPAN port the CSS removes it from all VLANs and ignores ingress traffic on that port In addition the DSPAN port does not participate in STP or routing protocols such as RIP and OSPF Traffic copied to the DSPAN port is typically forwarded
59. ble 3 11 Field Descriptions for show ospf neighbors Command Field Description Address The IP address of the neighboring router s interface to the attached network This address is used as the destination IP address when protocol packets are sent as unicasts along this adjacency The IP address is also used in router LSAs as the Link ID for the attached network if the neighboring router is selected to be the designated router The CSS learns the neighbor IP address when it receives hello packets from the neighbor Neighbor ID The OSPF Router ID of the neighboring router The CSS learns the Neighbor ID when it receives hello packets from the neighbor Prio The router priority of the neighboring router Contained in the neighbor s hello packets this value is used by OSPF to select the designated router for the attached network Cisco Content Services Switch Routing and Bridging Configuration Guide 340 OL 4580 01 _ Chapter 3 Configuring Open Shortest Path First OSPF Showing OSPF Information W Table 3 11 Field Descriptions for show ospf neighbors Command continued Field Description State Dr The state of a conversation being held with a neighboring router The following states are listed in order of their progression e Down The initial state of a neighbor conversation The Down state indicates that the CSS has received no recent information from the neighbor e Init In th
60. bled command config bridge bpdu guard disabled Showing Port Fast Information To display whether Port Fast is enabled or disabled on all interfaces use the show bridge port fast command This command is available in all modes This command also displays whether the BPDU guard feature is enabled or disabled on the CSS and the state of the interfaces Table 1 2 describes the fields in the show bridge port fast command output Table 1 2 Field Description for the show bridge port fast Command Field Description BPDU guard is state on this switch The state of the BPDU guard feature on the CSS Enabled or Disabled Name The number of the module slot and interface IfIndex The interface index number Type The type of interface e fe indicates a Fast Ethernet interface e ge indicates a Gigabit Ethernet interface Oper The operational state of the interface Up or Down Admin The administration state Enable or Down PortFast State Indicates whether Port Fast is enabled or disabled on the interface Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces Ti Showing Interface Configurations This CSS includes a series of show interface mode commands that enable you to view interface configuration information about the CSS This information includes VLAN
61. bridge aging time 600 2 Set the bridge forward delay time in seconds that the bridge uses when acting as the root config bridge forward time 9 3 Set the bridge hello time interval in seconds that the bridge waits before sending a hello packet config bridge hello time 9 Cisco Content Services Switch Routing and Bridging Configuration Guide n OL 4580 01 Chapter2 Configuring Spanning Tree Bridging for the CSS Configuring Spanning Tree Bridge Aging Time _ Table 2 1 Spanning Tree Bridging Configuration Quick Start continued Task and Command Example 4 Set the bridge spanning tree maximum age in seconds config bridge max age 21 5 Set the priority that the bridge spanning tree uses to choose the root bridge in the network config bridge priority 1700 6 Recommended Display bridge forwarding information config show bridge status The following running configuration example shows the results of entering the commands in Table 2 1 RK KKKKKKKKKKKKKKKK KKK KKK KKK GLOBAL kkkkkkkkkkkkkkkkkkkkkkkkkkk bridge aging time 600 bridge forward time 9 bridge hello time 9 bridge max age 21 bridge priority 1700 Configuring Spanning Tree Bridge Aging Time The aging time is the timeout period in seconds for aging out dynamically learned forwarding information By default the bridge filtering database aging time for the CSS is 300 seconds To set the bridge filtering
62. btaining xxi ordering xxi related xvii CDP configuring 7 1 et xii opportunistic layer 3 forwarding 6 10 symbols and conventions xx RIP configuring rt duplex configuring for interface 1 8 Dynamic Host Configuration Protocol DHCP D configuring CSS relay agent 8 1 configuring destinations 8 3 default IP route configuring 6 3 default VLAN restoring 1 11 1 12 displaying relay configuration information 8 4 DHCP See Dynamic Host Configuration enabling or disabling CSS relay agent 8 3 Protocol running config example 8 2 disabling setting maximum allowable hops field for bridge spanning tree 2 5 forwarding messages 8 4 circuit IP 1 34 circuit IP unreachables 1 33 E implicit service for static route next hop 6 6 OSPF IP interface 3 24 ECMP router discovery 1 34 configuring 6 8 displaying IP address configuring 6 8 CDP information 7 4 no prefer ingress configuring 6 8 DHCP relay configuration information 8 4 recovering from a failed router 6 9 DNS round robin configuring 6 9 configuring for CSS 2 1 4 1 5 1 6 1 7 1 8 1 documentation additional xxiv j audience xvi feedback documentation xxii chapter contents xvi forward time configuring for bridging 2 4 feedback xxii Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 E Ns W index hello time configuring for bridging 2 4 ICMP redirect message transmission disabling 1 33 implicit
63. bute firewallllocallospfistatic metric I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter 5 Configuring Routing Information Protocol E Configuring Equal Cost RIP Routes The options and variables for this command are as follows e firewall Advertises firewall routes through RIP e local Advertises local routes interfaces not running RIP e static Advertises static routes configured for the Ethernet interface ports e ospf Advertises OSPF routes through RIP e metric Optional Metric to use when advertising this route Enter a number from 1 to 15 The default is 1 For example config rip redistribute static 3 To stop advertising routes from other protocols through RIP use either the local static or firewall option The following commands stop advertising static routes config no rip redistribute firewall config no rip redistribute local config no rip redistribute static config no rip redistribute ospf Configuring Equal Cost RIP Routes To set the maximum number of routes that RIP can insert into the routing table use the rip equal cost command Enter a number from to 15 The default is 1 For example config rip equal cost 4 To reset the number of routes to the default value of 1 enter config no rip equal cost Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Chapter 5 C
64. circuit ip VLAN6 3 1 2 2 no ospf area Enabling OSPF on the Interface If you need to configure the interface attributes as described in the Configuring the Interface Attributes section do not enable OSPF on the IP interface until you finish configuring the attributes By default OSPF is disabled on an IP interface Use the ospf enable command to enable OSPF on the IP interface For example config circuit ip VLAN6 3 1 2 2 ospf enable To disable OSPF on the interface enter config circuit ip VLAN6 3 1 2 2 no ospf enable Configuring the Interface Attributes The OSPF interface attributes are set to a series of default values You can elect to use these values for the CSS IP interface or configure your own settings This section includes the following topics e Setting the Cost e Setting the Dead Router Interval e Setting the Hello Packet Interval e Setting the Password e Setting the Poll Interval e Setting the Priority of the CSS Cisco Content Services Switch Routing and Bridging Configuration Guide M324 OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Setting the Cost Configuring OSPF on a CSS IP Interface W e Setting the Retransmission Interval e Setting the Transit Link Delay To set the cost for sending a data packet on this interface use the ospf cost command The cost for the interface is a number from 0 to 65535 The default value of the cost for a given type of
65. communicate information between AS boundary routers e The advertised routes as ASE typel by including the typel option By default the type is ASE type2 The difference between typel and type2 is how the cost is calculated For a type2 ASE only the external cost metric is considered when comparing multiple paths to the same destination For typel ASE the combination of the external cost and the cost to reach the ASBR is used For example config ospf redistribute rip metric 3 typel To stop advertising the RIP routes via OSPF enter config no ospf redistribute rip Configuring OSPF on a CSS IP Interface When you configure a CSS IP interface as an OSPF interface you define its behavior and role within the OSPF routing domain This section includes the following topics e Configuring the CSS IP Interface as an OSPF Interface e Assigning an OSPF Area to the Interface e Enabling OSPF on the Interface e Configuring the Interface Attributes Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Configuring OSPF on a CSS IP Interface W Configuring the CSS IP Interface as an OSPF Interface An OSPF interface is an IP interface that you configure to send and receive OSPF traffic To configure the CSS IP interface as an OSPF interface use the ospf command Note You must enter the ospf command before the ospf enable command c
66. database aging time for the CSS use the bridge aging time command Enter an integer from 10 to 1000000 To set the bridge aging time to 600 enter config bridge aging time 600 To restore the default aging time of 300 enter config no bridge aging time Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 Chapter2 Configuring Spanning Tree Bridging forthe CSS E Configuring Spanning Tree Bridge Forward Time Configuring Spanning Tree Bridge Forward Time The forward time is the delay time in seconds that all bridges use for forward delay when this bridge is acting as the root By default the bridge forward delay time is 4 seconds Use the bridge forward time command to set the bridge forward delay time Enter an integer from 4 to 30 To set the bridge forward time to 9 enter config bridge forward time 9 To restore the default delay time of 4 enter config no bridge forward time Configuring Spanning Tree Bridge Hello Time The hello time is the time in seconds that all bridges wait before sending a hello packet when the bridge acts as the root By default the bridge hello time interval is 1 second Use the bridge hello time command to set the bridge hello time interval Enter an integer from 1 to 10 To set the bridge hello time to 9 enter config bridge hello time 9 To restore the default hello time interval of 1 enter config no bridge hell
67. de bridge port fast enable command You cannot configure Port Fast on a trunked port By default Port Fast is disabled on the port config if 2 1 bridge port fast enable To disable the Port Fast feature use the interface mode bridge port fast disable command config if 2 1 bridge port fast disable Enabling BPDU Guard Use the BPDU guard feature to prevent a Port Fast port on the CSS from participating in the spanning tree When you globally enable BPDU guard on the Port Fast ports spanning tree shuts down the ports that receive BPDUs For information to enable Port Fast on an interface port see the Configuring Port Fast on an Interface section In a valid configuration the enabled Port Fast ports do not receive BPDUs Receiving a BPDU on a Port Fast enabled port signals an invalid configuration such as the connection of an unauthorized device and the BPDU guard feature puts the port in the disabled state The BPDU guard feature provides a secure response to invalid configurations because you must manually put the port back in service To enable the BPDU guard on the CSS use the global configuration bridge bdpu guard enabled command config bridge bpdu guard enabled oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces To disable BPDU guard use the global configuration bridge bpdu guard disa
68. dging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Circuits Configuring a Circuit IP Address To assign an IP address to a circuit use the ip address command Enter the IP address and a subnet mask in CIDR bit count notation or a mask in dotted decimal notation The subnet mask range is 8 to 31 For example to configure an IP address and subnet mask for VLAN7 enter config circuit VLAN7 ip address 172 16 6 58 8 When you specify an IP address the mode changes to the specific circuit ip VLAN IP address as shown config circuit ip VLAN7 172 16 6 58 amp Note The CSS automatically sends a gratuitous ARP for the IP interface address when you assign an IP address to a circuit The gratuitous ARP informs all network nodes about ARP mapping The CSS transmits one ARP request packet and one ARP reply packet for every gratuitous ARP invocation To remove a local IP address from a circuit enter the following command from circuit mode config circuit VLAN7 no ip address Configuring a Circuit IP Broadcast Address To change the broadcast address associated with a circuit use the broadcast command If you leave the broadcast address at zero the all ones host is used for numbered interfaces The default broadcast address is an all ones host address for example IP address 172 16 6 58 24 has a broadcast address of 172 16 6 58 255 This command is available in IP configur
69. ding network traffic to the failed router When the router recovers the CSS e Becomes aware of the router e Reenters applicable routes into the routing table The implicit service does not determine if the default or static route appears in the routing table This decision is based on the CSS having a viable ARP entry for the next hop router IP address so the CSS can forward traffic to that destination The CSS uses the ICMP keepalive as a means to ensure the next hop router MAC address is available and current However in certain situations the next hop router may block ICMP message transmitted by the CSS which results in a failed ICMP keepalive the ICMP keepalive is in the Down state As long as the CSS has the ARP entry of the next hop router the static route is still placed in the routing table Note The CSS allows you to disable the internal ICMP keepalive through the ip no implicit service command In this case if the MAC address for the next hop is not known to the CSS the address will not appear in the routing table oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol WE Configuring an IP Route Use the ip route command to configure an IP route You can configure a static route a default static IP route a blackhole route where the CSS drops any packets addressed to the route or a firewall IP route Each ip route command requir
70. ditional Publications and Information Cisco Content Services Switch Routing and Bridging Configuration Guide Pav E OL 4580 01 CHAPTER 1 Configuring Interfaces and Circuits This chapter describes how to configure the CSS interfaces and circuits and how to bridge interfaces to Virtual LANs VLANs Information in this chapter applies to all CSS models except where noted This chapter contains the following major sections Interface and Circuit Overview Configuring Interfaces Configuring Circuits Configuring RIP for an IP Interface Configuring the Switched Port Analyzer Feature Interface and Circuit Overview The CSS provides Ethernet interfaces ports that enable you to connect servers PCs routers and other devices to the CSS Using the bridge command you assign the Ethernet interfaces to a specific VLAN Each VLAN circuit requires an IP address Assigning an IP address to each VLAN circuit allows the CSS to route Ethernet interfaces from VLAN to VLAN oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits Interface and Circuit Overview amp Using the trunk command you can assign multiple VLANs to a CSS Ethernet interface port Fast Ethernet port or Gigabit Ethernet port A trunk is a point to point link carrying the traffic of several VLANSs The advantage of a trunk is to save ports by creating a link between two CSSs im
71. e CSS except the console and Ethernet management ports Caution Shutting down an interface terminates all connections to the interface oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces To shut down all interfaces enter admin shutdown Restarting an Interface To restart an interface use the no admin shutdown or no shut command For example e To restart interface e3 on the CSS 11501 with the no admin shutdown command enter config if e3 no admin shutdown e To restart interface e3 on the CSS 11501 with the no shut command enter config if e3 no admin shutdown amp Note The CSS automatically sends a gratuitous ARP for the IP interface address when you restart the interface The gratuitous ARP informs all network nodes about ARP mapping The CSS transmits one ARP request packet and one ARP reply packet for every gratuitous ARP invocation Restarting All Interfaces To restart all interfaces enter no admin shutdown Note The CSS automatically sends a gratuitous ARP for every configured IP interface address when you restart all interfaces The gratuitous ARP informs all network nodes about ARP mapping The CSS transmits one ARP request packet and one ARP reply packet for every gratuitous ARP invocation Cisco Content Services Switch Routing and Bridging Configu
72. e VIP range then the route is advertised unconditionally Cisco Content Services Switch Routing and Bridging Configuration Guide 318 OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Configuring OSPF onthe CSS W Optionally you can define any of the following e The network cost for the route by including the metric option Enter a number from 1 to 16777215 The default is 1 e A 32 bit tag value to advertise each external route by including the tag option The 32 bit tag value is not used by the OSPF protocol itself You can use the tag value to communicate information between ASBRs e The advertised routes as ASE typel by including the typel option By default the type is ASE type2 The difference between typel and type2 is how the cost is calculated For a type2 ASE only the external cost metric is used when comparing multiple paths to the same destination For typel ASE the combination of the external cost and the cost to reach the ASBR is used For example config ospf advertise 193 23 44 0 255 255 255 0 metric 3 typel To stop advertising of the route as OSPF ASE through all OSPF interfaces enter config no ospf advertise 193 23 44 255 255 255 0 The following running configuration example illustrates the ospf advertise command for OSPF advertising of VIP addresses and an IP address Comments are preceded by an exclamation point LR ARK KKK KKK KKK KKK KKK KKK KAKKKK QLOBAL FRR
73. e as follows ip_or_host The IP address of the system for static mapping Enter an IP address in dotted decimal notation for example 192 168 11 1 or in mnemonic host name format for example myhost mydomain com mac_address The MAC address of the system mapped to the IP address Enter the MAC address in hyphenated hexadecimal notation for example 00 60 97 d5 26 ab interface The CSS Ethernet interface port that you want to configure For a CSS 11501 enter the interface name in interface port format for example e2 For a CSS 11503 or CSS 11506 the interface format is slot port for example 3 1 vlan The number of the VLAN configured in a trunked interface on which the ARP address is configured assuming trunking is enabled for the CSS Gigabit Interface port Enter an integer from 1 to 4094 as the VLAN number For example config arp 192 168 11 1 00 60 97 d5 26 ab e2 To remove a static mapping address use the no arp command For example config no arp 192 168 11 1 Note The CSS discards ARP requests from hosts not on the same network as the CSS circuit IP address Thus if a CSS and a host are within the same VLAN but configured for different IP networks the CSS does not respond to ARP requests from the host oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter4 Configuring the Address Resolution Protocol E Configuring ARP Timeout Con
74. e combination of the external cost and the cost to reach the ASBR is used Route Tag The 32 bit tag value to advertise the external route The displayed when redistribution is enabled route tag value is not used by the OSPF protocol itself It is used to communicate information between AS boundary routers Cisco Content Services Switch Routing and Bridging Configuration Guide M338 i OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Showing OSPF Information Showing Summary Route Configuration Information To show the summary route configuration information enter show ospf range Table 3 10 describes the fields in the show ospf range command output Table 3 10 Field Descriptions for the show ospf range Command Field Description Area ID The ID for the area Lsdb Type The type of link state database For an ABR the type is summaryLink Addr Range The address range for the summary route as specified by the IP Mask Range address Addr Range and mask Mask Range pair Effect Displays whether the range is advertised or block Showing OSPF Neighbors To show the OSPF neighbors enter show ospf neighbors Table 3 11 describes the fields in the show ospf neighbors command output oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information Ta
75. e phy auto negotiate disable command e phy 10Mbits FD Sets the Fast Ethernet port to 10 Mbps and full duplex mode e phy 10Mbits HD Sets the Fast Ethernet port to 10 Mbps and half duplex mode e phy 100Mbits FD Sets the Fast Ethernet port to 100 Mbps and full duplex mode e phy 100Mbits HD Sets the Fast Ethernet port to 100 Mbps and half duplex mode e phy 1Gbits FD asym Sets the Gigabit Ethernet port to full duplex mode with asymmetric pause frames transmitted toward the link partner Asymmetric pause is useful when you need the CSS to pause its link partner but not to respond to pause frames transmitted from the link partner e phy 1Gbits FD no pause Sets the Gigabit Ethernet port to full duplex mode with no pause frames transmitted or received e phy 1Gbits FD sym Sets the Gigabit Ethernet port to full duplex mode with symmetric pause pause frames transmitted and received by the CSS Symmetric pause is useful for point to point links By default all Gigabit Ethernet ports are configured to full duplex mode with symmetric pause I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces e phy 1Gbits FD sym asym Sets the Gigabit Ethernet port to full duplex mode with symmetric and asymmetric pause frames used with the local device For example to configure Fast Ethernet interface 1 on the I O module
76. e routers and the CSS does not know all of the routes the routers are aware of Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 611 Chapter6 Configuring the Internet Protocol WE Showing IP Configuration Information e disabled The CSS does not perform opportunistic Layer 3 forwarding Regular Layer 3 forwarding is performed only for packets that contain the CSS destination MAC address For example to configure IP opportunistic Layer 3 forwarding to all enter config ip opportunistic all To reconfigure IP opportunistic Layer 3 forwarding to the default of local enter config no ip opportunistic When you configure ip opportunistic all you can use the ip route originated packets command see the IP Configuration Quick Start section to configure routes that the CSS uses to reach devices but does not use as opportunistic routes for forwarding traffic Routes created using the ip route originated packets command apply only to packets that originate on the CSS Packets and flows forwarded by the CSS do not use these routes For example config ip route 0 0 0 0 0 192 168 1 7 originated packets Showing IP Configuration Information Use the show ip command to display IP information for the CSS This section includes the following topics e Showing IP Global Configuration Parameters e Showing IP Interface Information e Showing IP Routing Information e Showing IP Sta
77. efine a default VLAN to accept packets that arrive untagged on the interface include the default vlan command as part of the trunk VLAN definition The command also specifies that the packets transmitted from this VLAN will be untagged The default VLAN must be explicitly set if you want untagged packets to be processed by the CSS Otherwise these packets are discarded The default vlan command can be specified only for a single VLAN If you attempt to use this command for another VLAN the CSS instructs you to disable the current default VLAN using the no default vlan command For example config if 1 1 trunk config if 1 1 vlan 2 Create VLAN lt 2 gt y n y config if vlan 1 1 2 vlan 3 Create VLAN lt 3 gt y nl y config if vlan 1 1 3 default vlan To remove the default VLAN selection enter config if vlan 1 1 3 no default vlan Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 EEEN Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces Configuring Spanning Tree Bridging for a VLAN or a Trunked Interface amp The CSS supports configuration of Spanning Tree Protocol STP bridging for an Ethernet interface in a VLAN or for a trunked Ethernet interface Spanning tree bridging is used to detect and then prevent loops in the network You can define the bridge spanning tree path cost priority and state for an Ethernet interface or for
78. enter config no cdp timer Showing CDP Information Use the show cdp command to display and verify CDP information for the CSS such as frequency of transmissions and the hold time for transmitted CSS CDP information For example config show cdp Global CDP information Sending CDP packets every 60 seconds Sending a holdtime value of 16 seconds TimeLastCdpSent 0 days 00 00 30 The following example illustrates the CDP output on a Cisco Catalyst 8540 router using the Cisco IOS show cdp neighbors command 24 8540 1 gt show cdp neighbors Capability Codes R Router T Trans Bridge B Source Route Bridge S Switch H Host I IGMP r Repeater Device ID Local Intrfce Holdtme Capability Platform Port ID 00 10 58 01 4d e3 Eth 0 178 RTS css 11050 Eth Mgmt SCA043801A5 Eth 0 144 PS WS C6009 3 1 25 8540 1 Fas 0 0 7 142 RT C8540CSR Fas 0 0 4 25 8540 1 Eth 0 142 RT C8540CSR Eth 0 SCA043801HU bxb11 Eth 0 TER TS WS C6009 2 48 00 07 85 43 14 1d Eth 0 170 RTS CSS11503 Eth Mgmt Cisco Content Services Switch Routing and Bridging Configuration Guide ra g OL 4580 01 CHAPTER Configuring the DHCP Relay Agent The Dynamic Host Configuration Protocol DHCP servers provide configuration parameters to DHCP clients When DHCP clients and associated servers do not reside on the same IP network or subnet a DHCP relay agent can transfer DHCP messages between them To configure a DHCP relay agent on a CSS define DHCP server d
79. ept the router priority The interface OSPF configuration settings include e Intervals for the hello packet LSA retransmission and link state update packet e Authentication password e CSS router priority e Interface cost For more information on configuring these OSPF IP interface settings see the Configuring OSPF on a CSS IP Interface section Table 3 2 Configuration Quick Start for OSPF on a CSS Interface Task and Command Example 1 Access global configuration mode Enter config 2 Access the circuit configuration mode for a preconfigured circuit on which you want to create the IP interface For example if circuit VLAN6 already exists enter config circuit VLAN6 config circuit VLAN6 Note Refer to Chapter 1 Configuring Interfaces and Circuits for information on how to configure the CSS interfaces and circuits and the bridge interfaces to VLANs oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF HZ CSS OSPF Configuration Quick Start Table 3 2 Configuration Quick Start for OSPF on a CSS Interface continued Task and Command Example 3 Create the IP interface to the circuit To create an IP address of 3 1 2 2 with a subnet mask of 24 enter config circuit VLAN6 ip address 3 1 2 2 24 Create ip interface lt 3 1 2 2 gt y n Y Configure the IP interface as an OSPF inter
80. ered adjacent OSPF routers collect raw topological data from the LSAs that they receive Each router then prunes this data down to a tree of the shortest network paths centered on itself The router examines the total cost to reach each router or network node in its domain By discarding all but the lowest cost path to each destination the router builds a shortest path tree to each destination which it uses until the network topology changes It is possible to have multiple lowest cost paths to a destination Cisco Content Services Switch Routing and Bridging Configuration Guide 36 E OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF CSS OSPF Configuration Quick Start Hi CSS OSPF Configuration Quick Start This section includes the following topics e Global OSPF Configuration Quick Start e OSPF IP Interface Configuration Quick Start e Verifying Your Configuration Global OSPF Configuration Quick Start To perform the global OSPF configuration for the CSS see the steps in Table 3 1 In the most basic global configuration where the CSS functions as a router in the OSPF backbone area you need to perform only steps 1 and 2 to e Define the CSS router ID e Enable OSPF Optionally you can define the CSS e In an area other than the backbone including a stub area e Asan ABR by configuring route summarization e Asan ASBR to advertise non OSPF routes through OSPF as AS external routes such as static and RI
81. es one of the following e An IP address and a subnet mask prefix for example 192 168 1 0 24 e An IP address and a subnet mask for example 192 168 1 0 255 255 255 0 The syntax for this global configuration command is ip route ip_address subnet_mask blackholelip_address2 distancel originated packets firewall index distance The syntax and options for the command are as follows e ip_address The destination network address Enter the IP address in dotted decimal notation for example 192 168 11 1 e subnet_mask The IP subnet mask Enter the mask in either CIDR bitcount notation for example 24 Dotted decimal notation for example 255 255 255 0 e blackhole Instructs the CSS to drop any packets addressed to the destination e ip_address2 The next hop address for the route Enter the IP address in dotted decimal notation for example 192 168 11 1 e distance Optional The administrative distance Enter an integer from 1 to 254 A smaller number is preferable The default value is 1 e originated packets Specifies that the route is used only by packets created using flows or sessions going to and from the CSS for example a Telnet session to the CSS The route is not used by flows or sessions that go through the CSS for example between an attached server and a remote client amp Note A ping response and an SNMP responses do not use the originated packets route A ping request sent from
82. es the fields in the show mibii command output Table 1 8 Field Descriptions for the show mibii Command Field Description MAC The interface address at the protocol layer immediately below the network layer in the protocol stack For interfaces that do not have such an address for example a serial line this object contains an octet string of zero length Administrative The desired state of the interface Enabled Disabled or Testing The testing state indicates no operational packets can be passed MTU The size of the largest datagram that can be sent or received on the interface specified in octets For interfaces that are used for transmitting network datagrams this is the size of the largest network datagram that can be sent on the interface In Octets The total number of octets received on the interface including framing characters In Unicast The number of subnetwork unicast packets delivered to a higher layer protocol In Multicast The number of non unicast for example subnetwork broadcast or subnetwork multicast packets delivered to a higher layer protocol In Errors The number of inbound packets that contained errors preventing them from being delivered to a higher layer protocol In Discards The number of inbound packets that were chosen to be discarded even though no errors had been detected to prevent their being delivered to a higher layer protocol One poss
83. eset the retransmit interval to the default value of 5 seconds enter config circuit ip VLAN6 3 1 2 2 no ospf retransmit Setting the Transit Link Delay Transit delay is the estimated number of seconds the CSS waits to transmit a link state update packet over the OSPF interface Use the ospf transit delay command to set the transit delay for an interface Enter a number from 0 to 3600 seconds 1 hour The default is 1 second To set the transit delay to 3 seconds enter config circuit ip VLAN6 3 1 2 2 ospf transit delay 3 To reset the transit delay to the default value of 1 second enter config circuit ip VLAN6 3 1 2 2 no ospf transit delay Showing OSPF Information Use the show ospf command to view OSPF information on the CSS This command is available in all modes This section includes the following topics e Showing OSPF Area Information e Showing Global Statistics e Showing IP Interface Information e Showing Link State Databases e Showing ASE Entries e Showing the Configured Advertised ASE Routes e Showing the Redistribution Policy e Showing Summary Route Configuration Information e Showing OSPF Neighbors Cisco Content Services Switch Routing and Bridging Configuration Guide n OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Showing OSPF Information Showing OSPF Area Information To show information about OSPF areas enter show ospf areas Table 3 3
84. estinations on a circuit and enable the DHCP relay agent on the circuit You must first assign an IP address on the circuit to be able to configure the DHCP relay agent for the circuit Use the ip address command in the specific circuit mode to assign the IP address and a subnet mask For example config circuit VLAN2 ip address 178 3 6 53 8 This chapter contains the following major sections e DHCP Relay Agent Configuration Quick Start e Enabling and Disabling DHCP on the Circuit e Defining the Hops Field Value for Forwarding DHCP Messages e Displaying the DHCP Relay Configuration oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter 8 Configuring the DHCP Relay Agent E DHCP Relay Agent Configuration Quick Start DHCP Relay Agent Configuration Quick Start Table 8 1 provides a quick overview of the steps required to configure the DHCP relay agent for the circuit Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 8 1 Table 8 1 DHCP Relay Agent Configuration Quick Start Task and Command Example 1 Specify the DHCP relay destination IP address in dotted decimal notation config circuit VLAN2 dhcp relay to 192 168 22 25 2 Enable the DHCP relay agent on the CSS circuit config circuit VLAN2 dhcep relay agent
85. et Quotient TransPath and VCO are registered trademarks of Cisco Systems Inc and or its affiliates in the United States and certain other countries All other trademarks mentioned in this document or Website are the property of their respective owners The use of the word partner does not imply a partnership relationship between Cisco and any other company 0401R Cisco Content Services Switch Routing and Bridging Configuration Guide Copyright 2004 Cisco Systems Inc All rights reserved CONTENTS Preface xv Audience xvi How to Use This Guide xvi Related Documentation xvii Symbols and Conventions xx Obtaining Documentation xxi Cisco com xxi Ordering Documentation xxi Documentation Feedback xxii Obtaining Technical Assistance xxii Cisco Technical Support Website xxii Opening a TAC Case xxiii TAC Case Priority Definitions xxiii Obtaining Additional Publications and Information xxiv cuapTeR 1 Configuring Interfaces and Circuits 1 1 Interface and Circuit Overview 1 1 Interface and Circuit Configuration Quick Start 1 4 Configuring Interfaces 1 6 Configuring an Interface 1 7 Entering a Description for the Interface 1 7 Configuring Interface Duplex and Speed 1 8 Setting Interface Maximum Idle Time 1 10 Bridging an Interface toa VLAN 1 11 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 ii E Contents Specifying VLAN Trunking for an Interface 1 11 Selecting a Default VLAN
86. face Enter config circuit ip VLAN6 3 1 2 2 ospf Optional If the globally configured area is other than the backbone area enter the configured area ID In this example the globally configured area ID is 1 1 1 1 config circuit ip VLAN6 3 1 2 2 ospf area 1 1 1 1 Optional With a default setting of 1 the CSS is set to a priority that allows it to become the designated router If you do not want the CSS to become the designated router you can change its priority or disable it from eligibility For example if you want the CSS to be ineligible to become a designated router enter config circuit ip VLAN6 3 1 2 2 ospf priority 0 For more information on designated routers see the Setting the Priority of the CSS section Enable OSPF on the interface Enter config circuit ip VLAN6 3 1 2 2 ospf enable The following running configuration example shows the results of entering the commands in Table 3 2 Lk KK RR KR RK KR KK KR RK KE KKEEK CTRCULT RRR RK KKK KKK KKK KKK KKK KR KKK circuit VLAN6 ip address 3 1 2 2 255 255 255 0 ospf ospf area 1 1 1 1 ospf priority 0 Cisco Content Services Switch Routing and Bridging Configuration Guide M310 OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF CSS OSPF Configuration Quick Start Hi Verifying Your Configuration To verify the OSPF global and interface configurations use the show ospf command and its options For ex
87. face in the CSS The Enterprise ap64Stats MIB defines these statistics Enter the interface name as a case sensitive unquoted text string show ether errors zero Displays the Ethernet errors for all Ethernet interfaces in the CSS and reset the statistics to zero upon retrieval show ether errors zero interface name Displays the Ethernet errors for the specified Ethernet interface in the CSS and resets the statistics to zero upon retrieval Enter the interface name as a case sensitive unquoted text string show ether errors 32 Displays the RFC 1398 32 bit statistics including the 32 suffix show ether errors 32 interface name Displays the RFC 1398 32 bit statistics including the 32 suffix Enter the interface name as a case sensitive unquoted text string Table 1 9 describes the fields in the show ether errors command output Table 1 9 Field Descriptions for the show ether errors Command Field Description Alignment The number of frames with alignment errors frames that do not end with a whole number of octets and have a bad cyclic redundancy check received on the interface FCS The number of frames received on the interface that are an integral number of octets in length but do not pass the frame check sequence FCS check oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter 1 E Configuring Interfaces Table 1 9 Field Descriptions for the show ethe
88. fetime 600 To reset the time to the default of three times the max advertisement interval enter config circuit VLAN7 no router discovery lifetime Configuring Router Discovery Limited Broadcast By default the CSS transmits router discovery packets using the limited broadcast address is 224 0 0 1 the all hosts multicast address Use the router discovery limited broadcast command to transmit router discovery packets using the limited broadcast address 255 255 255 255 For example config circuit VLAN7 router discovery limited broadcast To revert to the default of 224 0 0 1 enter config circuit VLAN7 no router discovery limited broadcast oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Circuits Configuring the Router Discovery Max Advertisement Interval By default the maximum interval timer used for router discovery advertisement from the circuit VLAN is 600 10 minutes Use the router discovery max advertisement interval command to configure the maximum interval timer used for router discovery advertisement from the circuit VLAN This command defines the maximum interval in seconds between sending advertisements Enter an integer from 4 to 1800 For example config circuit VLAN7 router discovery max advertisement interval 300 To restore the router discovery maximum advertisement inte
89. figuring ARP Timeout To set the time in seconds to hold an ARP resolution result use the arp timeout command When you change the timeout value this value affects only new ARP entries All previous ARP entries retain the old timeout value To remove all entries with the old timeout value enter the clear arp cache command Note This timeout value affects only dynamic ARP entries Static ARP entries are permanent and are not affected by this timeout period The timeout value is the number of seconds the CSS holds an ARP resolution result To set a timeout value enter an integer from 60 to 86400 24 hours seconds The default is 14400 seconds 4 hours If you do not want the ARP entries to time out enter none or 86401 For example config arp timeout 120 To restore the default timeout value of 14400 seconds enter config no arp timeout Configuring ARP Wait To set the time in seconds to wait for an ARP resolution use the arp wait command The wait time is the number of seconds the CSS waits for an ARP resolution in response to an ARP request to the network Enter an integer from 5 to 30 seconds The default is 5 For example config arp wait 15 To restore the default wait time of 5 seconds enter config no arp wait Cisco Content Services Switch Routing and Bridging Configuration Guide xs OL 4580 01 _ Chapter 4 Configuring the Address Resolution Protocol Updating ARP Parameters
90. for the show rip globals Command Field Description RIP Route Changes The global number of route changes made to the IP route database by RIP RIP Query Responses The global number of query responses sent to RIP query from other systems To display the RIP interface statistics for all RIP interface entries enter show rip statistics Table 1 14 describes the fields in the show rip statistics command output Table 1 14 Field Descriptions for the show rip statistics Command Field Description System Route Changes The global number of route changes made to the IP route database by RIP System Global Query Responses The global number of query responses sent to RIP query from other systems IP Address The RIP interface IP address Triggered Updates Sent The number of triggered RIP updates sent by the interface Bad Packets Received The number of bad RIP response packets received by the interface Bad Routes Received The number of bad routes in valid RIP packets received by the interface oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits E Configuring the Switched Port Analyzer Feature Configuring the Switched Port Analyzer Feature Configure the switched port analyzer SPAN feature on your CSS to mirror copy traffic passing through one CSS port Fast Ethernet or Giga
91. g RIP for an IP Interface Table 1 12 describes the fields in the show rip command output Table 1 12 Field Descriptions for the show rip Command Field Description IP Address The advertised RIP interface address State The operational state of the RIP interface RIP Send The RIP version that the interface sends The possible values are as follows e none Do not send RIP packets e RIPv1 Send RIP version 1 packets only e RIPv2 Send RIP version 2 packets only default RIP Recv The RIP version that the interface receives The possible values are as follows e both Receiving both version 1 and version 2 default e none Receiving no RIP packets e Ripvl Receiving RIP version 1 packets only e Ripv2 Receiving RIP version 2 packets only Default Metric The default metric used when advertising the RIP interface Tx Log The setting for the logging of RIP packet transmissions Enabled or Disabled The default setting is disabled Rx Log The setting for the logging of RIP packet received Enabled or Disabled The default setting is disabled To display global RIP statistics enter show rip globals Cisco Content Services Switch Routing and Bridging Configuration Guide 142 OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring RIP for an IP Interface W Table 1 13 describes the fields in the show rip globals command output Table 1 13 Field Descriptions
92. ges is enabled or disabled oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter6 Configuring the Internet Protocol W Showing IP Configuration Information Showing IP Interface Information Use the show ip interfaces command to display configured IP interfaces on the CSS The display includes the circuit state IP address broadcast address Internet Control Message Protocol ICMP settings and Router Discovery Program RDP settings Table 6 3 describes the fields in the show ip interfaces command output Table 6 3 Field Descriptions for the show ip interfaces Command Field Description Circuit Name The name of the circuit associated with the IP interface State The state of the IP interface The possible states are as follows e Active 1 Interface is up e Disabled 2 Interface is disabled e NoCircuit 3 Interface is waiting for an underlying circuit IP Address The IP address assigned to the circuit Network Mask The network mask of the circuit Broadcast Address The broadcast IP address associated with the IP interface If left at zero the all ones host is used for numbered interfaces 255 255 255 255 is always used for unnumbered interfaces Redundancy Indicates whether the redundancy protocol is running on the interface The default state is Disabled ICMP Redirect Whether the transmission of Internet
93. he IP route database by RIP System Global Query Responses The global number of query responses sent to RIP query from other systems IP Address The RIP interface IP address Triggered Updates Sent The number of triggered RIP updates sent by the interface Bad Packets Received The number of bad RIP response packets received by the interface Bad Routes Received The number of bad routes in valid RIP packets received by the interface oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter 5 Configuring Routing Information Protocol E Showing RIP Configurations Cisco Content Services Switch Routing and Bridging Configuration Guide m OL 4580 01 CHAPTER Configuring the Internet Protocol This chapter provides information to configure the Internet Protocol IP for the CSS and contains the following major sections IP Configuration Quick Start Configuring an IP Route Disabling an Implicit Service for the Static Route Next Hop Configuring an IP Source Route Configuring the IP Record Route Configuring Box to Box Redundancy Configuring IP Equal Cost Multipath Forwarding IP Subnet Broadcast Addressed Frames Configuring IP Unconditional Bridging Configuring IP Opportunistic Layer 3 Forwarding Showing IP Configuration Information For information on configuring static routes for the Ethernet management port refer to the Cisco Content Se
94. he maximum allowable number in the hops field to the default of 4 enter config no dhcp agent max hops Displaying the DHCP Relay Configuration Use the show dhcp relay agent global command to display the DHCP configuration information on the CSS This command is available in all modes For example show dhcp relay agent global Table 8 2 describes the fields in the show dhcp relay agent global command output Table 8 2 Field Descriptions for the show dhcp relay agent global Command Field Description Max Hops The maximum allowable number in the hops field of the BOOTP header The CSS does not forward packets with headers that contain a larger number Number of circuits The number of CSS circuits configured for DHCP configured for DHCP Circuit The circuit configured for DHCP Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Chapter8 Configuring the DHCP Relay Agent Displaying the DHCP Relay Configuration _ Table 8 2 Field Descriptions for the show dhcp relay agent global Command Field Description IfAddress The interface address for the circuit DHCP State The DHCP relay agent state on the circuit Enabled or Disabled Relay destination The DHCP relay destination address for the server Each circuit can have five destination addresses Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a Chapter
95. he name of the interface ifIndex The Index for the interface Type The type of interface The possible types include e fe Fast Ethernet interface e ge Gigabit Ethernet interface e console Console interface Oper Operational state Up or Down Admin Administrative state Up or Down Last Change The date of the last state change Showing Interface Duplex and Speed Use the show phy command to show duplex and speed values for all interfaces For example config show phy To show duplex and speed value for a specific interface specify the show phy command and the interface name Enter the interface name as follows e CSS 11501 Enter the interface name in interface port format for example el for Ethernet interface port 1 e CSS 11503 or CSS 11506 Enter the interface format in slot port format for example 3 1 for Ethernet port 1 on the I O module in slot 3 For example to show the interface and duplex speed for interface port 1 ona CSS 11506 the I O module in slot 2 enter config show phy 2 1 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 123 Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces Table 1 7 describes the fields in the show phy command output Table 1 7 Field Descriptions for the show phy Command Field Description Name The name of the physical interface Configured Speed The configured speed for
96. hello packets that the router sends on the interface This interval is advertised in hello packets sent out on this interface Dead The number of seconds before the router s neighbors declare that the router is down and when they stop receiving the router s hello packets This interval is advertised in hello packets sent out on this interface Cisco Content Services Switch Routing and Bridging Configuration Guide M332 fl OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Showing OSPF Information W Table 3 5 Field Descriptions for show ospf interfaces Command continued Field Description Transit Delay The number of seconds to transmit a Link State Update packet over an interface LSAs contained in the Link State Update packet have their age incremented by this amount before transmission This value should take into account transmission and propagation delays the value must be greater than zero Retransmit The number of seconds between LSA retransmissions for adjacencies belonging to an interface Also the interval is used when retransmitting Database Description and Link State Request packets Cost The cost of sending a data packet on the interface expressed in the link state metric The cost of sending a packet is advertised as the link cost for the interface in the router LSA The cost of an interface must be greater than Zero Showing Link State Databases You can sho
97. how bridge status Command continued Field Description State The state of the port The possible states are as follows Block The blocking state A port enters the blocking state after CSS initialization The port does not participate in frame forwarding Listen The listening state This state is the first transitional state a port enters after the blocking state The port enters this state when STP determines that the port should participate in frame forwarding Learn The learning state The port enters the learning state from the listening state The port in the learning state prepares to participate in frame forwarding Forward The forwarding state The port enters the forwarding state from the learning state A port in the forwarding state forwards frames Disabled The disabled state A port in the disabled state does not participate in frame forwarding or STP A port in the disabled state is nonoperational Designated Bridge The bridge ID for the designated bridge Designated Root The bridge ID for the designated root Root Cost The cost of the root Port Cost The cost of the port Desg Port Designated port I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Interfaces Showing Trunking Configurations The CSS enables you to show VLAN trunk status information for G
98. ible reason for discarding such a packet could be to free up buffer space In Unknown The number of packets received over the interface that were discarded because of an unknown or unsupported protocol oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces Table 1 8 Field Descriptions for the show mibii Command continued Field Description Last Change The value of sysUpTime at the time the interface entered its current operational state If the state has not changed since the time the CSS came up the sysUptime is when the port was initialized Operational The current operational state of the interface Up Down or Testing The Testing state indicates no operational packets can be passed Speed An estimate of the interface s current bandwidth in bits per second For interfaces that do not vary in bandwidth or for those where no accurate estimation can be made this object contains the nominal bandwidth Queue Len The length of the output packet queue in packets Out Octets The total number of octets transmitted out of the interface including framing characters Out Unicast The total number of packets that higher level protocols requested be transmitted to a subnetwork unicast address including those packets that were discarded or not sent Out Multicas
99. ide describes how to perform CSS global load balancing configuration tasks including e Domain Name Service DNS e DNS Sticky e Content Routing Agent e Client Side Accelerator e Network proximity Cisco Content Services Switch Redundancy Configuration Guide This guide describes how to perform CSS redundancy configuration tasks including e VIP and virtual interface redundancy e Adaptive session redundancy e Box to box redundancy Cisco Content Services Switch Security Configuration Guide This guide describes how to perform CSS security configuration tasks including e Controlling access to the CSS e Secure Shell Daemon protocol e Radius e TACACS e Firewall load balancing e Secure Socket Layer SSL termination with the SSL Acceleration Module Cisco Content Services Switch Command Reference This reference provides an alphabetical list of all CLI commands including syntax options and related commands Cisco Content Services Switch Device Management User s Guide This guide describes how to use the Device Management user interface an HTML based web based application that you use to configure and manage your CSS I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Preface HI Symbols and Conventions Symbols and Conventions A This guide uses the following symbols and conventions to identify different types of information
100. idge priority to the default of 32768 enter config no bridge priority Disabling Bridge Spanning Tree A Spanning tree bridging is enabled by default When you disable spanning tree bridging the CSS forwards all multicast traffic including bridge protocol data units BPDUs for the bridge multicast group and for trunked VLANs The CSS can still operate in an 802 1Q spanning tree environment as long as you do not require that the CSS put any of its ports into a blocking state Caution Disabling spanning tree bridging may make your network susceptible to packet storms I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter2 Configuring Spanning Tree Bridging forthe CSS HI Showing Bridge Configurations To disable spanning tree bridging enter config bridge spanning tree disable To reenable spanning tree bridging enter config bridge spanning tree enable Showing Bridge Configurations Use the show bridge forwarding command to display bridge forwarding information Table 2 2 describes the fields in the show bridge forwarding command output Table 2 2 Field Descriptions for the show bridge forwarding Command Field Description VLAN The bridge interface virtual LAN number MAC Address The MAC address for the entries Port Number The port number used for bridge forwarding Use the show bridge status command to display bridge status informati
101. ig circuit ip VLAN7 192 168 1 58 rip send v1 Cisco Content Services Switch Routing and Bridging Configuration Guide iao OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring RIP for an IP Interface W Configuring RIP Packet Logging By default CSS of logging received or transmitted RIP packets on the interface is disabled Use the rip log command to enable the CSS to log received or transmitted RIP packets on the interface The options for this command are as follows e rip log rx CSS logs RIP packets received on the interface e rip log tx CSS logs RIP packets transmitted on the interface For example config circuit ip VLAN7 192 168 1 58 rip log rx Showing RIP Configurations for IP Addresses Use the show rip command to show a RIP configuration for one IP address or all IP addresses configured in the CSS The options for this command are as follows e show rip Displays RIP configurations for all interfaces including the logging of RIP packets e show rip ip_address Displays a single RIP interface entry e show rip globals Displays RIP global statistics e show rip statistics Displays RIP interface statistics for all interfaces e show rip statistics ip_address Displays RIP interface statistics for a specific interface I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configurin
102. igabit Ethernet and Fast Ethernet ports To display this information use the show trunk command Table 1 5 describes the fields in the show trunk command output Table 1 5 Field Descriptions for the show trunk Command Field Description Port The CSS port VLAN The VLAN on the port Default VLAN The configured default VLAN on the port if there is no configured default VLAN None appears in this field Showing Interface Information To display a list of valid interfaces for the CSS use the show interface command For example config show interface To display information for a specific interface enter the show interface command and the interface name Enter the interface name as follows e CSS 11501 Enter the interface name in interface port format for example el for Ethernet interface port 1 e CSS 11503 or CSS 11506 Enter the interface format in slot port format for example 3 1 for Ethernet port 1 on the I O module in slot 3 For example to show interface information for port 1 on a CSS 11503 the I O module in slot 2 enter config show interface 2 1 Cisco Content Services Switch Routing and Bridging Configuration Guide e122 E OL 4580 01 Chapter1 Configuring Interfaces and Circuits Configuring Interfaces W Table 1 6 describes the fields in the show interface command output Table 1 6 Field Descriptions for the show interface Command Field Description Name T
103. ighboring Cisco CDP compatible devices on a network The CSS only transmits CDP advertisements to other CDP compatible devices on the network the CSS does not listen for CDP messages from the other CDP compatible devices and does not maintain a CDP table Any Cisco device with CDP support can learn about the CSS by listening to the periodic messages transmitted by the CSS and determining when the CSS is active Network operators and analysts can use this information for configuration monitoring topology discovery and fault diagnosis CDP messages contain specific information about the CSS such as e Device ID CSS base MAC address e IP address CSS management port IP address e Ethernet port ID name e CSS functional capability flag Router Transparent Bridge or Switch e CSS software version e CSS platform CDP advertisements also include hold time information which defines the length of time the receiving device is to hold CDP information before discarding it Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 1 Chapter7 Configuring the Cisco Discovery Protocol HT CDP Configuration Quick Start This chapter contains the following major sections e CDP Configuration Quick Start e Enabling CDP e Setting the CDP Hold Time e Setting the CDP Transmission Rate e Showing CDP Information CDP Configuration Quick Start Table 7 1 provides a quick overview of the steps required to configu
104. in slot 2 of the CSS 11503 to 100 Mbps and half duplex mode enter config if 2 1 phy 100Mbits HD For example to configure gigabit interface 1 on the SCM in slot 1 of the CSS 11503 to full duplex mode with asymmetric pause enter config if 1 1 phy auto negotiate disable config if 1 1 phy 1Gbits FD asym Setting Interface Maximum Idle Time As a troubleshooting tool to verify an interface s ability to receive traffic use the max idle command If the interface does not receive traffic within the configured idle time the CSS reinitializes the interface automatically Set the idle time to a value greater than the interval over which the interface is receiving traffic For example if the interface receives traffic every 90 seconds set the idle time to a value greater than 90 seconds If you set the idle time to less than 90 seconds the CSS would continuously reinitialize the interface before the interface was able to receive traffic Enter an idle time from 15 to 65535 seconds The default is 0 which disables the idle timer For example to set the maximum idle time to 180 seconds for interface port 1 on a CSS 11503 the I O module in slot 2 enter config if 2 1 max idle 180 To reset the idle time for an interface to its default value of 0 enter config if 2 1 no max idle Cisco Content Services Switch Routing and Bridging Configuration Guide i10 OL 4580 01 _ Chapter 1 Configuring Interfaces and
105. ina Trunk 1 13 Configuring Spanning Tree Bridging for a VLAN or a Trunked Interface 1 14 Configuring Spanning Tree Bridge Pathcost 1 15 Configuring Spanning Tree Bridge Port Priority 1 15 Configuring Spanning Tree Bridge State 1 16 Configuring Port Fast on an Interface 1 16 Enabling Port Fast 1 17 Enabling BPDU Guard 1 17 Showing Port Fast Information 1 18 Showing Interface Configurations 1 19 Showing Bridge Configurations 1 19 Showing Trunking Configurations 1 22 Showing Interface Information 1 22 Showing Interface Duplex and Speed 1 23 Showing Interface Statistics 1 24 Showing Ethernet Interface Errors 1 27 Shutting Down an Interface 1 29 Shutting Down All Interfaces 1 29 Restarting an Interface 1 30 Restarting All Interfaces 1 30 Configuring Circuits 1 31 Entering Circuit Configuration Mode 1 31 Configuring a Circuit IP Interface 1 31 Configuring a Circuit IP Address 1 32 Configuring a Circuit IP Broadcast Address 1 32 Configuring Circuit IP Redirects 1 33 Configuring Circuit IP Unreachables 1 33 Configuring Router Discovery Preference for a Circuit IP Interface 1 33 Enabling and Disabling a Circuit IP 1 34 Cisco Content Services Switch Routing and Bridging Configuration Guide u OL 4580 01 Contents W Configuring Router Discovery Protocol Settings for a Circuit 1 34 Configuring the Router Discovery Lifetime 1 35 Configuring Router Discovery Limited Broadcast 1 35 Configuring the Router Discovery Max Advertisement In
106. ion Guide E Chapter3 Configuring Open Shortest Path First OSPF WE Configuring OSPF ona CSS IP Interface The hello interval is the length of time in seconds between hello packets that the interface sends to its neighbor routers The hello interval must be the same value for all routers attached to a common network Use the ospf hello command to set the hello interval for the IP interface Enter an integer from to 65535 The default is 10 seconds To set a hello interval of 25 seconds enter config circuit ip VLAN6 3 1 2 2 ospf hello 25 To reset the hello interval to the default value of 10 seconds enter config circuit ip VLAN6 3 1 2 2 no ospf hello Setting the Password All OSPF protocol exchanges can be authenticated to ensure only known trusted routers participate in routing updates The OSPF password is used for authentication of all OSPF protocol exchanges Use the ospf password command to set the password for an interface This password must be the same for all routers attached to a common network Enter a quoted text string with a maximum of eight characters For example to set the password of quota enter config circuit ip VLAN6 3 1 2 2 ospf password quota To remove the OSPF password from the interface enter config circuit ip VLAN6 3 1 2 2 no ospf password Setting the Poll Interval The poll interval is the length of time in seconds between the transmittal of hello packe
107. is address on a content rule as a single VIP address when another content rule includes it within its VIP address range If you do OSPF may make erroneous advertisement decisions or some rules may appear to have the wrong VIP redundancy state associated with them First before you enter the ospf advertise command configure the CSS as an ASBR For more information see the Configuring the CSS as an Autonomous System Boundary Router section Define an address range for the ospf advertise command by specifying an IP address and subnet mask that represents networks in the area being summarized Enter the IP address and subnet mask in dotted decimal notation for example 192 168 128 0 255 255 224 0 You can also enter the mask in CIDR bit count notation format for example 24 For example to advertise VIP addresses from 192 168 44 0 to 192 168 44 255 define the range by entering the IP address and subnet mask of 192 168 44 0 255 255 255 0 config ospf advertise 192 168 44 0 255 255 255 0 We recommend that you use the 32 prefix in the ospf advertise command to specify VIPs individually Specifying entire subnets does not enable the CSS to make proper decisions on advertising the VIPs The advertisement must match or fit entirely within a VIP range to make proper decisions If the OSPF advertise IP address range and the VIP range overlap or the OSPF advertise range encapsulates that is is larger than or doesn t match th
108. is state the CSS has seen a hello packet from the neighbor However the CSS has not established bidirectional communication with the neighbor the router itself did not appear in the neighbor s hello packet All neighbors in this state or higher are listed in the hello packets sent from the associated interface e 2 Way In this state communication between the two routers is bidirectional The designated router is selected from the set of neighbors in state 2 Way or greater e ExStart This is the first step to create an adjacency between the two neighboring routers The goal is to decide which router is the master and to determine the initial Database Description DD sequence number Neighbor conversations in this state or greater are called adjacencies I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information Table 3 11 Field Descriptions for show ospf neighbors Command continued Field Description State Dr cont Exchange In this state the CSS sends DD packets to the neighbor to describe its entire link state database Each DD packet has a DD sequence number and is explicitly acknowledged Only one DD packet is allowed to be outstanding at any one time In this state the CSS may also send Link State Request packets requesting the neighbor s more recent LSAs All adjacencie
109. it information regardless of circuit state e show circuit name circuit name Displays circuit information for a specific circuit regardless of state To list all circuits and their interfaces in the Up state enter show circuits To list all circuits and their interfaces regardless of their state enter show circuits all To list an individual circuit enter show circuits name VLAN5 Table 1 10 describes the fields in the show circuits command output Table 1 10 Field Descriptions for the show circuits Command Field Description Circuit Name The circuit name The VLAN name appear in uppercase with no space before the VLAN number Circuit State The state of the circuit The possible states are as follows e active ipEnabled e down ipEnabled e active ipDisabled e down ipDisabled IP Address IP interface address Interface s The interface associated with the circuit Operational The operational status of the interface Up or Down Status oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Circuits Showing IP Interfaces Use the show ip interfaces command to display configured IP interfaces on the CSS The display includes the circuit state IP address broadcast address Internet Control Message Protocol ICMP settings and Router Discovery Program RDP settings For ex
110. k that you want to bridge through the CSS to an upstream router you may want to force the CSS to make a bridging decision on the received packets instead of making a routing table decision Use the ip uncond bridging global configuration command to always make a bridging decision on the received packets With this command the bridging decision always takes precedence over a routing table decision For example config ip uncond bridging To restore the default behavior of the CSS enter config no ip uncond bridging Configuring IP Opportunistic Layer 3 Forwarding The CSS opportunistic Layer 3 forwarding feature allows the CSS to reduce the number of network device hops for certain packets or flows The CSS forwards packets at Layer 3 if the destination MAC address in the Ethernet header is the CSS MAC address Use the ip opportunistic command to enable opportunistic Layer 3 forwarding and allow the CSS to make Layer 3 forwarding decisions even if the Layer 2 packet destination MAC address does not belong to the CSS Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Chapter6 Configuring the Internet Protocol Configuring IP Opportunistic Layer 3 Forwarding _ For example Figure 6 1 shows a CSS connected to VLAN1 and VLAN2 Each VLAN has an end station and an uplink to Router1 End stations A and B both point to Router as their default router When End Station A transmits a packet to
111. mmand required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 1 1 Table 1 1 Interface and Circuit Configuration Quick Start Task and Command Example 1 Log in to the CSS 2 Enter configuration mode by typing config config config 3 Enter the interface mode for the interface you wish to configure This set of interface commands applies to the CSS 11501 config interface el config if el This set of interface commands applies to the CSS 11503 or CSS 11506 config interface 2 1 config if 2 1 4 Configure the interface duplex speed and flow control default is auto negotiate config if 2 1 phy 100Mbits FD 5 Bridge the interface to a VLAN All interfaces are assigned to VLAN1 by default config if 2 1 bridge vlan 2 6 Optional Enable trunking for a CSS Gigabit Ethernet or Fast Ethernet port config if 2 1 trunk config if 2 1 vlan 2 Create VLAN lt 2 gt y n y config if vlan 2 1 2 vlan 3 Create VLAN lt 3 gt y n y config if vlan 2 1 3 Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Chapter1 Configuring Interfaces and Circuits Interface and Circuit Overview W Table 1 1 Interface and Circuit Configuration Quick Start continued Task and Command Example
112. n 192 168 0 0 and 192 168 255 255 enter config no ospf enable config ospf range 0 1 0 1 192 168 0 0 255 255 0 0 To remove the range enter config no ospf range 0 1 0 1 192 168 0 0 255 255 0 0 By default the ABR advertises this range If you want to hide the range from the rest of the AS include the block option For example config ospf range 0 1 0 1 192 168 0 0 255 255 0 0 block Configuring the CSS as an Autonomous System Boundary Router If you want the CSS to be an ASBR that exchanges routing information with routers belonging to other autonomous systems use the ospf as boundary command Disable OSPF before you enter the ospf as boundary command For example config no ospf enable config ospf as boundary To remove the CSS as an AS boundary router enter config no ospf as boundary Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 LEN Chapter3 Configuring Open Shortest Path First OSPF E Configuring OSPF on the CSS To advertise a route as OSPF ASE through all OSPF interfaces or generate a default route see the following sections e Advertising a Route as an OSPF ASE Route e Advertising a Default ASE Route e Advertising Other Routes Through OSPF Advertising a Route as an OSPF ASE Route The CSS OSPF functionality examines configuration parameters such as service configurations in content rules keepalive behavior VIP redundancy configurations
113. n ASBR does not generate a default route into the OSPF routing domain Use the ospf default command to force the CSS to generate a default ASE route and advertise the route through OSPF Before you enter the ospf default command configure the CSS as an ASBR For more information see the Configuring the CSS as an Autonomous System Boundary Router section For example config ospf default Cisco Content Services Switch Routing and Bridging Configuration Guide 320 i OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Configuring OSPF onthe CSS W Optionally you can define any of the following e The network cost for an OSPF default route by including the metric option If a default route metric is defined the router advertises itself as the default router to the area Enter a number from 1 to 16 777 215 The default is 1 e A 32 bit tag value to advertise each external route by including the tag option The 32 bit tag value is not used by the OSPF protocol itself You can use the tag value to communicate information between ASBRs e The advertised routes as ASE typel by including the typel option By default the type is ASE type2 The difference between typel and type2 is how the cost is calculated For a type2 ASE only the external cost metric is used when comparing multiple paths to the same destination For type 1 ASE the combination of the external cost and the cost to reach the ASBR is used
114. n Tool automatically recommends resources for an immediate solution If your issue is not resolved using the recommended resources your case will be assigned to a Cisco TAC engineer The online TAC Case Open Tool is located at this URL http www cisco com techsupport caseopen For P1 or P2 cases P1 and P2 cases are those in which your production network is down or severely degraded or if you do not have Internet access contact Cisco TAC by telephone Cisco TAC engineers are assigned immediately to P1 and P2 cases to help keep your business operations running smoothly To open a case by telephone use one of the following numbers Asia Pacific 61 2 8446 7411 Australia 1 800 805 227 EMEA 32 2 704 55 55 USA 1 800 553 2447 For a complete listing of Cisco TAC contacts go to this URL http www cisco com warp public 687 Directory DirTAC shtml TAC Case Priority Definitions To ensure that all cases are reported in a standard format Cisco has established case priority definitions Priority 1 P1 Your network is down or there is a critical impact to your business operations You and Cisco will commit all necessary resources around the clock to resolve the situation Priority 2 P2 Operation of an existing network is severely degraded or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products You and Cisco will commit full time resources during normal busine
115. n address of 192 168 22 25 to a DHCP server enter config circuit VLAN2 dhcp relay to 192 168 22 25 To remove the relay destination address enter config circuit VLAN2 no dhcp relay to 192 168 22 25 Enabling and Disabling DHCP on the Circuit After you enable the DHCP relay agent on the CSS circuit the CSS transfers DHCP messages between DHCP clients and servers Use the dhep relay agent command to enable the agent on the circuit This command is available in circuit configuration mode For example config circuit VLAN2 dhcep relay agent To disable the DHCP relay agent on the circuit enter config circuit VLAN2 no dhcp relay agent I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter 8 Configuring the DHCP Relay Agent W Defining the Hops Field Value for Forwarding DHCP Messages Defining the Hops Field Value for Forwarding DHCP Messages The CSS forwards or discards a DHCP message based on the hops field value in the BOOTP header When messages have values in the hops fields that exceed the maximum value set on the CSS the CSS discards the message Use the dhcp agent max hops global configuration command to set the maximum allowable number in the hops field By default the maximum allowable number is 4 You can set a number from 1 to 15 For example to set the maximum allowable value of 10 enter config dhcp agent max hops 10 To reset t
116. naware CSSs to transmit and receive information on the same cable Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Chapter1 Configuring Interfaces and Circuits Interface and Circuit Overview W Figure 1 1 illustrates the interfaces circuits and VLANs in a CSS and Figure 1 2 illustrates trunking between VLANs Figure 1 1 CSS Interfaces and Circuits VLAN1 Interface Port e1 Circuit Bridging Interface Port e2 IP Interface Domain Interface Port e3 for VLAN 1 vian 1 Interface Port e4 10 3 6 58 VLAN2 Interface Port e5 Circuit Bridgin Interface Port e7 IP ee IP Interface Denan Interface Port e9 for VLAN 2 vlan 2 Interface Port e11 10 3 6 59 VLAN3 Interface Port e6 Circuit Bridging Interface Port e8 IP Interface Domain Interface Port e10 for VLAN 3 vlan 3 Interface Port e12 10 3 6 60 Figure 1 2 Interface Trunking Between VLANs VLAN1 Trunk Ki VLAN1 VLAN2 a VLAN1 and VLAN2 ee VLAN2 CSS 1 CSS 2 51593 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 lt a Chapter1 Configuring Interfaces and Circuits HZ interface and Circuit Overview Interface and Circuit Configuration Quick Start Table 1 1 provides a quick overview of the steps required to configure interfaces and circuits Each step includes the CLI co
117. nce For all customers partners resellers and distributors who hold valid Cisco service contracts the CiscoTechnical Assistance Center TAC provides 24 hour a day award winning technical support services online and over the phone Cisco com features the Cisco Technical Support Website as an online starting point for technical assistance If you do not hold a valid Cisco service contract please contact your reseller Cisco Technical Support Website The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies The Cisco Technical Support Website is available 24 hours a day 365 days a year The Cisco Technical Support Website is located at this URL http www cisco com techsuport Accessing all the tools on the Cisco Technical Support Website requires a Cisco com user ID and password If you have a valid service contract but do not have a login ID or password register at this URL http tools cisco com RPF register register do Cisco Content Services Switch Routing and Bridging Configuration Guide Poi OL 4580 01 Preface Obtaining Technical Assistance Wi Opening a TAC Case Using the online TAC Case Open Tool is the fastest way to open P3 and P4 cases P3 and P4 cases are those in which your network is minimally impaired or for which you require product information After you describe your situation the TAC Case Ope
118. ng OSPF on the CSS Configuring OSPF on a CSS IP Interface Showing OSPF Information OSPF Configuration in a Startup Configuration File oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF HZ OSPF Overview OSPF Overview OSPF is a link state routing protocol that e Provides network topology discovery within a group of routers and networks called an autonomous system AS e Calculates the shortest path to destinations within the AS As a link state protocol OSPF routers flood any change in routing information throughout the network This action differs from a distance vector protocol such as RIP which periodically exchanges routing information only with neighboring devices Within an AS each OSPF router builds and synchronizes a database of the AS network topology The routers synchronize their databases by requesting information from other AS routers Each router sends its information as link state advertisements LSAs that include information about the state of each router and link in the AS A link is an interface on the router The state of the link is the description of the interface including the router s IP address and subnet mask and its relationship to the neighboring router Then the router uses its database and the Shortest Path First SPF algorithm to calculate the shortest path to every destination in the AS and st
119. ng Your Configuration 3 11 Configuring OSPF on the CSS 3 12 Configuring the OSPF Router ID 3 12 Enabling OSPF 3 13 Configuring an Area 3 13 Removing an Area 3 14 Configuring Equal Cost Routes 3 14 Configuring Summarized Routes at an ABR 3 14 Configuring the CSS as an Autonomous System Boundary Router 3 15 Advertising a Route as an OSPF ASE Route 3 16 Advertising a Default ASE Route 3 20 Advertising Other Routes Through OSPF 3 21 Configuring OSPF on a CSS IP Interface 3 22 Configuring the CSS IP Interface as an OSPF Interface 3 23 Assigning an OSPF Area to the Interface 3 24 Enabling OSPF on the Interface 3 24 Configuring the Interface Attributes 3 24 Cisco Content Services Switch Routing and Bridging Configuration Guide x OL 4580 01 Contents W Setting the Cost 3 25 Setting the Dead Router Interval 3 25 Setting the Hello Packet Interval 3 25 Setting the Password 3 26 Setting the Poll Interval 3 26 Setting the Priority of the CSS 3 27 Setting the Retransmission Interval 3 27 Setting the Transit Link Delay 3 28 Showing OSPF Information 3 28 Showing OSPF Area Information 3 29 Showing Global Statistics 3 29 Showing IP Interface Information 3 30 Showing Link State Databases 3 33 Showing ASE Entries 3 36 Showing the Configured Advertised ASE Routes 3 37 Showing the Redistribution Policy 3 38 Showing Summary Route Configuration Information 3 39 Showing OSPF Neighbors 3 39 OSPF Configuration in a Startup Configuration
120. ning state from the listening state The port in the learning state prepares to participate in frame forwarding Forward The forwarding state The port enters the forwarding state from the learning state A port in the forwarding state forwards frames Disabled The disabled state A port in the disabled state does not participate in frame forwarding or the Spanning Tree Protocol A port in the disabled state is non operational Designated Bridge The bridge ID for the designated bridge Designated Root The bridge ID for the designated root Root Cost The cost of the root Port Cost The cost of the port Desg Port Designated port I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter2 Configuring Spanning Tree Bridging forthe CSS HI Showing Bridge Configurations Cisco Content Services Switch Routing and Bridging Configuration Guide P28 E OL 4580 01 S CHAPTER Configuring Open Shortest Path First OSPF This chapter provides configuration and viewing information for the Open Shortest Path First OSPF protocol Information in this chapter applies to all CSS models except where noted Note The CSS supports OSPF Version 2 as defined in RFC 2178 For detailed information about OSPF MIB objects refer to RFC 1850 This chapter contains the following major sections OSPF Overview CSS OSPF Configuration Quick Start Configuri
121. ns for the show bridge forwarding Command 1 20 Table 1 4 Field Descriptions for the show bridge status Command 1 20 Table 1 5 Field Descriptions for the show trunk Command 1 22 Table 1 6 Field Descriptions for the show interface Command 1 23 Table 1 7 Field Descriptions for the show phy Command 1 24 Table 1 8 Field Descriptions for the show mibii Command 1 25 Table 1 9 Field Descriptions for the show ether errors Command 1 27 Table 1 10 Field Descriptions for the show circuits Command 1 37 Table 1 11 Field Descriptions for the show ip interfaces Command 1 38 Table 1 12 Field Descriptions for the show rip Command 1 42 Table 1 13 Field Descriptions for the show rip globals Command 1 43 Table 1 14 Field Descriptions for the show rip statistics Command 1 43 Table 1 15 Field Descriptions for the show setspan Command 1 47 Table 2 1 Spanning Tree Bridging Configuration Quick Start 2 2 Table 2 2 Field Descriptions for the show bridge forwarding Command 2 6 Table 2 3 Field Descriptions for the show bridge status Command 2 6 Table 3 1 Global OSPF Configuration Quick Start 3 8 Table 3 2 Configuration Quick Start for OSPF on a CSS Interface 3 9 Table 3 3 Field Descriptions for the show ospf areas Command 3 29 Table 3 4 Field Descriptions for the show ospf global Command 3 29 Table 3 5 Field Descriptions for show ospf interfaces Command 3 30 a Cisco Content Services Switch Routing and Bridging Configuration Guide gy E Tables Table 3 6 Table 3 7
122. nt 8 3 IP address removing from circuit 1 32 IP interface configuring 1 31 overview 1 1 quick start 1 4 router discovery lifetime 1 35 router discovery limited broadcast 1 35 router discovery max advertisement interval 1 36 router discovery min advertisement 1 36 running config example 1 5 showing 1 37 circuit IP broadcast address configuring 1 32 disabling 1 34 enabling 1 34 IP address configuring 1 32 redirects configuring 1 33 removing 1 32 Cisco Discovery Protocol CDP configuring 7 1 displaying 7 4 running config example 7 3 clearing ARP parameters 4 5 CLI conventions XX configuration quick start initial CSS configuration 2 2 4 2 5 2 6 2 7 2 8 2 interface and circuit 1 4 OSPF 3 7 configuring bridging for CSS 2 3 CDP for CSS 7 1 circuit 1 31 circuit IP address 1 32 circuit IP interface 1 31 DHCP relay agent 8 1 ECMP 6 8 global OSPF 3 7 interface 1 6 1 8 IP route 6 3 IP source route 6 7 IP subnet broadcast 6 9 IP unconditional bridging 6 10 OSPF global parameters 3 12 OSPF IP interface parameters 3 22 RIP for CSS 5 1 RIP for IP interface 1 39 router discovery 1 31 Content Services Switch 11050 and 11150 port designation 1 7 1 22 11501 port designation 1 7 1 22 Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 11503 11506 and 11800 slot port designation 1 7 ARP configuring for CSS 4 3 Index W o
123. nteger to detect old and duplicate LSAs The space of sequence numbers is linearly ordered The larger the sequence number when compared as signed 32 bit integers the more recent the LSA The sequence number 0x80000000 is reserved and unused Checksum The checksum of the complete contents of the LSA excluding the age field The age field is excluded to allow the LSA age to increment without updating the checksum The checksum is used to detect data corruption of an LSA This corruption can occur while an LSA is being flooded or while an LSA is being held in a router s memory The LSA checksum field cannot take on the value of zero the occurrence of this value is a checksum failure Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 lt lt Chapter3 Configuring Open Shortest Path First OSPF HI Showing OSPF Information Showing ASE Entries To show AS external ASE entries in the LSDB enter show ospf ase To find specific entries pipe the output through the grep command For example show ospf aselgrep 10 10 10 0 Table 3 7 describes the fields in the show ospf ase command output Table 3 7 Field Descriptions for the show ospf ase Command Field Description Link State ID The network destination for the advertisement Router ID The advertising router Age The age in seconds of the ASE LSA T The ASE type of the route 1 for ASE Typel or 2 fo
124. o time Configuring Spanning Tree Bridge Max Age The maximum age is the time in seconds that protocol information received on a port is stored by the CSS when a bridge acts as the root By default the bridge spanning tree maximum age is 6 seconds Use the bridge max age command to set the bridge spanning tree maximum age Enter an integer from 6 to 40 S Note Ensure the bridge maximum age is greater than or equal to 2 times bridge hello time 1 second and less than or equal to 2 times bridge forward time 1 second Cisco Content Services Switch Routing and Bridging Configuration Guide n OL 4580 01 _ Chapter 2 Configuring Spanning Tree Bridging for the CSS Configuring Spanning Tree Bridge Priority E To set the bridge maximum age to 21 enter config bridge max age 21 To restore the default maximum age of 6 enter config no bridge max age Configuring Spanning Tree Bridge Priority In spanning tree the 2 octet field is prepended to the 6 octet MAC address to form an 8 octet bridge identifier The device with the lowest bridge identifier is considered the highest priority bridge and becomes the root bridge By default the bridge priority is set to 32768 Use the bridge priority command to set the priority that the bridge spanning tree uses to choose the root bridge in the network The range for bridge priority is 0 to 65535 For example config bridge priority 1700 To restore the br
125. on Table 2 3 describes the fields in the show bridge status output Table 2 3 Field Descriptions for the show bridge status Command Field Description STP State The state of the Spanning Tree Protocol Enabled or Disabled Root Max Age The timeout period in seconds during which the host times out root information Root Hello Time The interval in seconds during which the root bridge broadcasts its hello message to other devices Root Fwd Delay The delay time in seconds that the root bridge uses for forward delay Designated Root The bridge ID for the designated root Cisco Content Services Switch Routing and Bridging Configuration Guide P26 E OL 4580 01 _ Chapter 2 Configuring Spanning Tree Bridging for the CSS Showing Bridge Configurations W Table 2 3 Field Descriptions for the show bridge status Command continued Field Description Bridge ID The bridge ID of the bridge Port The port ID State The state of the port The possible states are as follows Block The blocking state A port enters the blocking state after CSS initialization The port does not participate in frame forwarding Listen The listening state This state is the first transitional state a port enters after the blocking state The port enters this state when STP determines that the port should participate in frame forwarding Learn The learning state The port enters the lear
126. on configuring OSPF oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter 5 Configuring Routing Information Protocol HZ RIP Configuration Quick Start RIP Configuration Quick Start Table 5 1 provides a quick overview of the steps required to configure global RIP attributes for the CSS Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 5 1 Table 5 1 RIP Configuration Quick Start Task and Command Example 1 Configure the CSS to advertise a route through RIP config rip advertise 192 168 1 0 24 9 2 Configure the CSS to advertise routes from other protocols through RIP such as firewall routes OSPF routes and static routes configured for the Ethernet interface ports config rip redistribute static 3 3 Set the maximum number of routes that RIP can insert into the routing table config rip equal cost 4 4 Recommended Display a RIP configuration for one IP address or all IP addresses configured in the CSS config show rip The following running configuration example shows the results of entering the commands in Table 5 1 RK KKKKKKKKKKKKKKKKK KK KKK KKK GLOBAL KKK KK KKK KKK KKK KKK KK KKK KKKEKK rip advertise 192 168 1 0 255 255 255 0 9 rip redistribute static 3 rip equal cost 4 Cisco C
127. onfigure ABRs to the backbone area A stub area is an area that does not accept or distribute detailed network information external to the area A stub area has only one router that interfaces the area to the rest of the AS The ABR attached to the stub area advertises a single default external route into the area Routers within a stub area use this route for destinations outside the autonomous system as well as for inter area routes This relationship conserves LSA database space that would otherwise be used to store external LSAs flooded into the area As shown in Figure 3 1 area 1 1 1 2 is a stub area that is reached only through ABR 2 Autonomous System Boundary Routers ASBRs provide connectivity from one autonomous system to another system ASBRs exchange their autonomous system routing information with boundary routers in other autonomous systems Every router inside an autonomous system knows how to reach the boundary routers for its autonomous system ASBRs can import external routing information from other protocols like RIP and redistribute them as AS external LSAs to the OSPF network If the CSS is an ASBR you can configure it to advertise VIP addresses for content as AS external routes In this way ASBRs flood information about external networks to routers within the OSPF network oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF
128. onfigured advertised ASE routes 3 36 3 37 OSPF global statistics 3 29 OSPF interface information 3 30 OSPF link state database information 3 33 OSPF neighbors 3 39 OSPF redistribution policy 3 38 OSPF summary route configuration 3 39 RIP 5 5 shutting down all interfaces 1 29 interface stack layer 1 29 smurf attacks caution 6 9 SPAN configuring 1 46 displaying information 1 47 example 1 45 overview 1 44 verifying configuration 1 47 spanning tree bridging aging time 2 3 caution when disabling 2 5 disabling 2 5 enabling 2 5 forward time 2 4 hello time 2 4 max age 2 4 priority 2 5 speed configuring for interface 1 8 static IP route configuring 6 3 statistics Ethernet interface errors 1 27 interface 1 24 IP 6 16 6 20 MIB II interface 1 24 OSPF global 3 29 RIP 1 41 5 5 5 6 switched port analyzer See also SPAN T TAC case opening xxiii case priority xxiii Technical Assistance Center see TAC technical support xxii trunking configuring 1 13 interface to VLAN 1 11 vV VLAN bridge to interface 1 11 default VLAN in a trunk link 1 13 restoring default 1 11 trunking 1 11 E Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Index W Ww warning symbol overview xx Z zero resetting Ethernet statistics to 1 27 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 E No W index Cisco Content Services S
129. onfiguring Routing Information Protocol Showing RIP Configurations W Showing RIP Configurations Use the show rip command to show a RIP configuration for one IP address or all IP addresses configured in the CSS This command provides the following options and variables e show rip Displays RIP configurations for all interfaces e show rip ip_address Displays a single RIP interface entry e show rip globals Displays RIP global statistics e show rip statistics Displays RIP interface statistics for all interfaces e show rip statistics ip_address Displays RIP interface statistics for a specific interface Table 5 2 describes the fields in the show rip command output Table 5 2 Field Descriptions for the show rip Command Field Description IP Address The advertised RIP interface address State The operational state of the RIP interface RIP Send The RIP version that the interface sends The possible field values are as follows e none Do not send RIP packets e RIPyv1 Send RIP version 1 packets only e RIPv2 Send RIP version 2 packets only default RIP Recv The RIP version that the interface receives The possible values are as follows e both Receive both version 1 and version 2 default e none Receive no RIP packets e Ripvl Receive RIP version 1 packets only e Ripv2 Receive RIP version 2 packets only Default Metric The default metric used for advertising
130. onomous system boundary routers 3 5 basic network topology 3 3 configuring global parameters 3 12 configuring IP interface parameters 3 22 CSS IP interface configuring 3 23 enabling on IP interface 3 24 interface attributes 3 24 interface configuration assigning an area 3 24 link state database 3 6 overview 3 2 quick configuration verification 3 11 quick global configuration 3 7 quick IP interface configuration 3 9 router ID configuring 3 12 routing hierarchy 3 3 startup config file 3 43 stub area 3 5 viewing area information 3 29 viewing AS external entries 3 36 Index W viewing configured advertised ASE routes 3 36 3 37 viewing global statistics 3 29 viewing interface information 3 30 viewing link state database information 3 33 viewing neighbors 3 39 viewing redistribution policy 3 38 viewing summary route configuration 3 39 OSPF global running config example 3 8 OSPF global configuration area configuring 3 13 AS boundary router 3 15 disabling 3 13 enabling 3 13 equal cost routes 3 14 removing an area 3 14 router ID 3 12 summarizing routes 3 14 OSPF interface attributes configuring 3 24 configuring cost 3 25 configuring CSS IP interface 3 23 dead router interval configuring 3 25 hello packet interval configuring 3 25 password setting 3 26 poll interval setting 3 26 priority setting 3 27 retransmission interval setting 3 27 transit delay setting 3 28 oL 4580 01 Cisco Content Service
131. ontent Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Chapter5 Configuring Routing Information Protocol Configuring RIP Advertise W Configuring RIP Advertise To advertise a route through RIP on the CSS use the rip advertise command The syntax for this command is rip advertise ip_address subnet_mask metric The variables for this command are as follows e ip_address The IP address for the route prefix Enter an IP address in dotted decimal notation for example 192 168 1 0 e subnet_mask The IP prefix length in CIDR bitcount notation for example 24 or in dotted decimal notation for example 255 255 255 0 e metric Optional Metric to use when advertising this route Enter a number from 1 to 15 The default is 1 For example config rip advertise 192 168 1 0 24 9 Note The network does not have to be present in the routing table to be advertised The SNTP ip advertise command is intended for advertising VIP addresses To stop advertising a route through RIP on the CSS enter config no rip advertise 192 168 1 0 24 Configuring RIP Redistribute By default RIP advertises RIP routes and local routes for interfaces running RIP Use the rip redistribute command to advertise routes from other protocols through RIP This command instructs RIP to advertise other routes such as firewall routes OSPF routes and so on The syntax for this command is rip redistri
132. or more information on designated routers see the Setting the Priority of the CSS section Use the ospf router id command to configure the OSPF router ID for the CSS A router ID is a 32 bit number in dotted decimal notation To assign the router ID of 121 23 21 1 to the CSS enter config ospf router id 121 23 21 1 S Note If OSPF is globally enabled use the no form of the ospf enable command to disable OSPF and change the router ID To delete the router ID on the CSS disable OSPF and enter config no ospf router id Cisco Content Services Switch Routing and Bridging Configuration Guide P32 OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Configuring OSPF onthe CSS W Enabling OSPF After you assign the router ID to the CSS globally enable OSPF on the CSS Use the ospf enable command to enable OSPF For example config ospf enable To disable OSPF enter config no ospf enable Configuring an Area By default the CSS is configured to the backbone area automatically The backbone area has a reserved ID of 0 0 0 0 If the CSS is part of an area other than the backbone area assign the CSS to that area Use the ospf area command to assign an area Enter the ID in dotted decimal notation for example 0 0 0 1 Although an area ID has the same form as an IP address the area ID address space is its own distinct address space For example if the CSS is in area 0 0 0
133. ores this information in a dynamic table When changes occur the router calculates new paths The CSS operating as an OSPF router provides e Intra area route support for routing in a single area between other OSPF routers e Inter area route support for routing between multiple OSPF areas e Route summarization between areas as an Area Border Router ABR e Stub area and AS boundary router support e Redistribution of local RIP static and firewall routes into an OSPF domain e Advertisement of VIP addresses for content as AS external routes e Simple authentication This section includes the following topics e OSPF Routing Hierarchy e Link State Databases Cisco Content Services Switch Routing and Bridging Configuration Guide n OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF OSPF Overview W OSPF Routing Hierarchy The OSPF routing hierarchy includes the following functions e Autonomous systems e Areas including the backbone and stub areas e Area Border Routers ABRs e Autonomous System Boundary Routers ASBRs Figure 3 1 illustrates an OSPF network topology Figure 3 1 Basic OSPF Network Topology Autonomous System A AS A Autonomous System B AS B AS AS Boundry Boundry Routeri Router1 Router2 CSS Router2 Area 1
134. ork To determine the router identify the router monitors the hello packets it receives The router is not allowed to elect a backup designated router nor a designated router until it transitions out of the Waiting state DR Other The interface is on a network on which another router has been selected to be the designated router In this state the router itself has not been selected as the backup designated router The router forms adjacencies to both the designated router and the backup designated router e Backup The router itself is the backup designated router on the attached network The router is the designated router when the present designated router fails The router establishes adjacencies to all other routers attached to the network The backup designated router performs slightly different functions during the flooding procedure as compared to the designated router e DR The router itself is the designated router on the attached network Adjacencies are established to all other routers attached to the network The router must also originate a network LSA for the network node The network LSA contains links to all routers including the designated router itself attached to the network I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information Table 3 5 Field Field Descriptions for sh
135. ort by entering config interface el config if el For example to configure interface 1 on a CSS 11503 or CSS 11506 access interface mode for the I O module in slot 2 by entering config interface 2 1 config if 2 1 Note in both examples that the CSS changes from configuration mode to the specific interface mode Entering a Description for the Interface To identify the Ethernet interface use the description command Enter a quoted text string from 1 to 255 characters including spaces For example config if 2 1 description Connects to server17 To view an interface description use the show running config interface command For example config if 2 1 show running config interface 2 1 LARK KKKKKKKKKKKKKKKKKKKKKK INTERFACE kkkkkkkkkkkkkkkkkkkkkkkxk interface 2 1 description Connects to server17 bridge vlan 2 oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits E Configuring Interfaces To remove an interface description enter config if 2 1 no description Configuring Interface Duplex and Speed By default the CSS Fast Ethernet interface and Gigabit Ethernet interface are configured to auto negotiate The CSS automatically detects the network line speed Fast Ethernet only and duplex of incoming signals and synchronizes those parameters during data transfer Auto negotiation enables the CSS and
136. ost or network prefix Enter an IP address in dotted decimal notation for example 192 168 11 1 The IP address after the to keyword is the final IP address in a range mask_or_prefix Subnet address of the specific network Enter the subnet address in mask or prefix notation for example 24 To show all IP routes in the CSS enter show ip routes Table 6 4 describes the fields in the show ip routes command output Table 6 4 Field Descriptions for the show ip routes Command Field Description Prefix length The IP address and prefix length for the route Next hop The IP address for the next hop oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol WE Showing IP Configuration Information Table 6 4 Field Descriptions for the show ip routes Command continued Field Description If The Index value that identifies the local interface through which the next hop of this route should be reached Type The type of the route entry The possible types are as follows e local Local interface e remote Remote destination e mgmt Management interface Proto The protocol for the route Age The maximum age of the route Metric The metric cost of the route Showing IP Statistics Use the show ip statistics command to display aggregate TCP statistics for the unit Table 6 5 describes the fields in the sh
137. ow arp config command output Table 4 4 Field Descriptions for the show arp config Command Field Description ARP Response Timeout The time in seconds to wait for an ARP resolution response before discarding the packet waiting to be forwarded to an address The time can be from 5 to 30 seconds The default is 5 seconds ARP Flush Timeout The time in seconds to hold an ARP resolution result in the ARP cache The timeout period can be from 60 to 86400 seconds 24 hours The default is 14400 seconds 4 hours An entry of none or 86401 indicates the ARP entries will not timeout To display the host IP addresses entered at initialization or boot time through ARP enter show arp file To display the ARP entries from the CSS management port enter show arp management port Table 4 5 describes the fields in the show arp management port command output Table 4 5 Field Descriptions for the show arp management port Command Field Description IP Address The IP address of the system for ARP mapping MAC Address The MAC address of the system mapped to the IP address Port The CSS Ethernet management port Cisco Content Services Switch Routing and Bridging Configuration Guide Pas B OL 4580 01 Chapter4 Configuring the Address Resolution Protocol Showing ARP Information W To display the resolution for a host IP address enter show arp 192 50 1 6 To display the host IP addresses en
138. ow ip statistics output Table 6 5 Field Descriptions for the show ip statistics Command Field Description UDP Statistics Input Datagrams The total number of flow related UDP datagrams delivered to UDP users No Port Errors The total number of received UDP datagrams for which there was no application at the destination port Output Datagrams The total number of flow related UDP datagrams sent from the CSS Input Errors The number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 _ Chapter 6 Configuring the Internet Protocol Showing IP Configuration Information W Table 6 5 Field Descriptions for the show ip statistics Command continued Field Description TCP Statistics Retransmit Algorithm The algorithm used to determine the timeout value for retransmitting unacknowledged octets Max Retransmit Time The maximum value permitted by a TCP implementation for the retransmission timeout measured in milliseconds Active Opens The number of times TCP connections have made a direct transition to the SYN SENT state from the Closed state Failed Attempts The number of times TCP connections have made a direct transition to the Closed state from either the SYN SENT state or the SYN RCVD state plus the n
139. ow ospf interfaces Command continued Description Priority The priority assigned to the interface advertised in the hello packets When two routers attached to a network both attempt to become the designated router the router with the highest priority takes precedence A router whose priority is set to 0 is ineligible to become the designated router on the attached network DR The IP interface address of the designated router selected for the attached network The designated router is selected on broadcast networks by the hello protocol Two pieces of identification are kept for the designated router the Router ID and the IP interface address on the network The designated router advertises the link state for the network This network LSA is labeled with the designated router s IP address The designated router is initialized to 0 0 0 0 which indicates the lack of a designated router BR The backup designated router selected for the attached network The backup designated router is also selected on all broadcast networks by the hello protocol All routers on the attached network become adjacent to both the designated router and the backup designated router The backup designated router becomes the designated router when the current designated router fails The backup designated router is initialized to 0 0 0 0 indicating the lack of a backup designated router Hello The length of time in seconds between the
140. plementing VLANs A trunk bundles virtual links over one physical link The unique physical link between the two CSSs is able to carry traffic for the specified VLANs Note The trunk and vlan commands and the associated software functionality comply with the IEEE 802 1Q Standard for Local and Metropolitan Area Networks Virtual Bridged Local Area Networks The CSS forwards VLAN circuit traffic to the IP interface The IP interface passes the traffic to the IP forwarding function where the CSS compares the destination of each packet to information contained in the routing table Once the CSS resolves the packet addresses it forwards the packet to the appropriate VLAN and destination port With trunking enabled the CSS automatically inserts a tag in every frame transmitted over the trunk link to identify the originating VLAN When the VLAN aware CSS receives the frame it reviews the VLAN tagged packet to identify the transmitting VLAN If the VLAN is recognized the frame is routed to the proper port and VLAN destination If the frame is from a VLAN that is not assigned to the trunk port the packet is ignored By default the CSS discards untagged packets For an 802 1Q trunk you can use the default vlan command to e Accept packets that arrive untagged on the interface e Transmit untagged packets By using this method the CSS can determine which VLAN transmitted an untagged frame This capability allows VLAN aware CSSs and VLAN u
141. ption Reachable Routes The current number of reachable routes Total Routes The current number of routes maintained both reachable and unreachable Reachable Hosts The current number of reachable host entries Cisco Content Services Switch Routing and Bridging Configuration Guide e20 OL 4580 01 Chapter6 Configuring the Internet Protocol Showing IP Configuration Information W Table 6 6 Field Descriptions for the show ip summary Command continued Field Description Total Hosts The current number of host entries both reachable and unreachable Total Memory in The total amount of memory in bytes allocated for the IP use IP Routing routing table When there are no additional free entries in Memory Pool the memory pool more memory is allocated to the pool Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 a 621 Chapter6 Configuring the Internet Protocol W Showing IP Configuration Information Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 CHAPTER 7 Configuring the Cisco Discovery Protocol The Cisco Discovery Protocol CDP is a medium independent protocol that runs over Layer 2 the data link layer on the CSS and other Cisco manufactured equipment such as routers switches bridges and access servers Use the cdp global configuration command to allow the CSS to advertise itself to all other ne
142. r config ospf advertise 192 168 4 15 255 255 255 255 Optional To advertise routes other than OSPF such as a firewall local RIP or static route configure OSPF to redistribute routes from the specific protocol To advertise static routes through OSPF with a default cost of 1 and default type of ASE type 2 enter config ospf redistribute static Enable OSPF on the CSS config ospf enable The following running configuration example shows the results of entering the commands in Table 3 1 kK KR RR KR RRR RRR KK RK KR KKEKEKK QLOBAL FRR KKK KKK KKK KK KKK KK KK KKK KKK ospf router id 121 23 21 1 ospf area 1 1 1 1 ospf as boundary ospf advertise 192 168 4 15 255 255 255 255 ospf redistribute static ospf enable Cisco Content Services Switch Routing and Bridging Configuration Guide ae E OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF CSS OSPF Configuration Quick Start Hi OSPF IP Interface Configuration Quick Start To configure OSPF on a CSS IP interface see the steps in Table 3 2 In the most basic IP interface configuration you need to perform only steps 1 through 4 and step 7 to e Assign OSPF to the IP interface e Associate OSPF with the globally defined area if this is an area other than the backbone area 0 0 0 0 e Enable OSPF on the interface This configuration example assumes you will accept the default OSPF configuration settings for the interface exc
143. r ASE Type2 Tag The tag for the route Metric The network cost for the route FwdAddr The external destination forwarding address for the packets Cisco Content Services Switch Routing and Bridging Configuration Guide M336 i OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Showing OSPF Information W Showing the Configured Advertised ASE Routes To show the configuration of ASE routes into OSPF enter show ospf advertise To show the configuration of ASE routes into OSPF for a specific host include the IP address or host and the subnet mask Enter the address in dotted decimal format for example 192 168 11 1 or mnemonic host name format for example myname mydomain com Enter the mask either e Asaprefix length in CIDR bit count notation for example 24 Do not enter a space to separate the IP address from the prefix length e In dotted decimal notation for example 255 255 255 0 For example show ospf advertise 192 168 11 1 24 Table 3 8 describes the fields in the show ospf advertise command output Table 3 8 Field Descriptions for the show ospf advertise Command Field Description Prefix The IP address for the route For the CSS the prefix is predominately VIP addresses Prefix Length The prefix length for the IP address Metric The network cost for the route The range is from 1 to 16777215 The default is 1 Type The ASE type for the route By defaul
144. r errors Command continued Field Description Configuring Interfaces and Circuits Single Collision The number of successfully transmitted frames on the interface for transmissions that were inhibited by exactly one collision Multiple The number of successfully transmitted frames on the Collisions interface for transmissions that were inhibited by more than one collision SQE Test The number of times that the SQE TEST ERROR message is generated Deferred Tx The number of frames for which the first transmission attempt on the interface is delayed because the medium is busy The count represented by an instance of this object does not include frames involved in collisions Internal Rx Errors The number of frames for which reception on the interface failed due to an internal MAC sublayer receive error Frame too Long The number of frames received on the interface that exceeded the maximum permitted frame size Carrier Sense Errors The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame on the interface Internal Tx Errors The number of frames for which transmission on the interface failed due to an internal MAC sublayer transmit error Excessive Collisions The number of frames for which transmission on the interface failed due to excessive collisions Late Collisions The number of times that a collision i
145. r server to allow those devices to immediately connect to the network rather than waiting for the STP to converge Ports connected to a single workstation or server should not receive bridge protocol data units BPDUs Caution The purpose of Port Fast is to minimize the time ports must wait for STP to converge This means that the Port Fast function is effective only when used on ports connected to end stations in the network If you enable Port Fast on a port connecting to another switch you risk creating a spanning tree loop Consider using the BDPU guard feature to avoid creating a spanning tree loop This section includes the following topics e Enabling Port Fast e Enabling BPDU Guard e Showing Port Fast Information Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces Ti Enabling Port Fast A A port with the Port Fast feature enabled is moved directly to the spanning tree forwarding state without waiting for the standard forward time delay Caution Use Port Fast only when connecting a single end station to a CSS interface Enabling this feature on a port connected to a switch or hub could prevent spanning tree from detecting and disabling loops in your network which could cause broadcast storms and address learning problems To enable Port Fast on a non trunked port use the interface mo
146. r1 Configuring Interfaces and Circuits WE Configuring RIP for an IP Interface Configuring a RIP Default Route By default the CSS advertises a default route on an IP interface with a metric of 1 To advertise a default route on an IP interface with a specific metric use the rip default route command You can also specify an optional metric in the command line The CSS uses this metric when advertising a route Enter a number from 1 to 15 For example config circuit ip VLAN7 192 168 1 58 rip default route 9 Configuring a RIP Receive Version By default the interface receives both RIP version and RIP version 2 To specify the RIP version that the interface receive use the rip receive command The options for this command are as follows e rip receive both Receives both RIP version 1 and RIP version 2 default e rip receive none Receives no RIP packets e rip receive v1 Receives RIP version 1 packets only e rip receive v2 Receives RIP version 2 packets only For example config circuit ip VLAN7 192 168 1 58 rip receive both Configuring RIP Send Version By default the interface sends RIP version 2 packets only To specify the RIP version that the interface transmits use the rip send command The options for this command are as follows e rip send none Sends no RIP packets e rip send v1 Sends RIP version 1 packets only e rip send v2 Sends RIP version 2 packets only default For example conf
147. ration Guide OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Circuits W Configuring Circuits A circuit on the CSS is a logical entity that maps IP interfaces to a logical port or group of logical ports for example a VLAN Each VLAN circuit requires an IP address Assigning an IP address to each VLAN circuit allows the CSS to route Ethernet interfaces from VLAN to VLAN Router Discovery Protocol RDP settings can also be configured for each circuit VLAN to advertise the CSS to hosts This section includes the following topics e Entering Circuit Configuration Mode e Configuring a Circuit IP Interface e Configuring Router Discovery Protocol Settings for a Circuit e Showing Circuits e Showing IP Interfaces Entering Circuit Configuration Mode To enter the circuit configuration mode to configure a VLAN use the circuit command Enter the specific VLAN in uppercase letters Do not include a space between VLAN and the VLAN number For example config circuit VLAN7 config circuit VLAN7 Configuring a Circuit IP Interface This section includes the following topics e Configuring a Circuit IP Address e Configuring a Circuit IP Broadcast Address e Configuring Circuit IP Redirects e Configuring Circuit IP Unreachables e Configuring Router Discovery Preference for a Circuit IP Interface e Enabling and Disabling a Circuit IP oL 4580 01 Cisco Content Services Switch Routing and Bri
148. re CDP for the CSS Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 7 1 Table 7 1 CDP Configuration Quick Start Task and Command Example 1 Enable CDP transmissions from the CSS to other neighboring Cisco CDP compatible devices on the network config cdp run 2 Specify the amount of time a receiving device retains the CDP information sent by the CSS time to live information before discarding this information config cdp holdTime 255 3 Specify the frequency at which the CSS transmits CDP packets to all receiving CDP compatible devices config cdp timer 120 4 Recommended Display and verify CDP information for the CSS config show cdp Cisco Content Services Switch Routing and Bridging Configuration Guide P72 B OL 4580 01 Chapter7 Configuring the Cisco Discovery Protocol Enabling CDP W The following running configuration example shows the results of entering the commands in Table 7 1 LREKKKKKKKKKKKKKKKKKKKKKKKKK GLOBAL KKK KKK KKK KKK KKK KKK KKKKKKKKK cdp run cdp holdTime 255 cdp timer 120 Enabling CDP Setting the By default CDP is disabled for the CSS Use the cdp run global configuration command to enable CDP transmissions from the CSS to other neighboring Cisco CDP compatible devices on the network For example
149. ress 5 Optional Enable the CSS to forward subnet broadcast addressed frames config ip subnet broadcast 6 Recommended Display IP information for the CSS For example to display IP routing information enter show ip routes Cisco Content Services Switch Routing and Bridging Configuration Guide lt OL 4580 01 Chapter 6 Configuring the Internet Protocol Configuring an IP Route Wi The following running configuration example shows the results of entering the commands in Table 6 1 LIS IIGOICG OR IGOR ICCC GLOBAL K RKKK KKK KKK I I IOC I k k k ip no implicit service ip redundancy ip subnet broadcast ip route 192 168 0 0 16 192 167 1 1 1 Configuring an IP Route A static route consists of a destination network address and mask as well as the next hop to reach the destination You can also specify a default static route using 0 0 0 0 as the destination network address and a valid next hop address to direct frames for which no other destination is listed in the routing table Default static routes are useful for forwarding otherwise unrouteable packets by the CSS When you configure a static route the CSS creates an internal service that periodically polls the configured next hop address with an ICMP echo or ping keepalive The internal service is called an implicit service If the router fails the CSS removes any entries from the routing table that point to the failed router and stops sen
150. ribes the fields in the show arp command output Table 4 2 Field Descriptions for the show arp Command Field Description IP Address The IP address of the system for ARP mapping MAC Address The MAC address of the system mapped to the IP address Type The resolution type for the entry Dynamic or Static The Dynamic resolution type indicates that the entry was discovered through the ARP protocol The Static resolution type indicates that the entry is from a static configuration Port The CSS interface configured as the egress logical port To display a summary of entries in the ARP resolution table enter show arp summary Table 4 3 describes the fields in the show arp summary command output Table 4 3 Field Descriptions for the show arp summary Command Field Description Static Entry The total number of static map entries in the ARP resolution table from a static configuration Dynamic Entry The total number of dynamic map entries in the ARP resolution table entries discovered through the ARP protocol Total Entry The total number of static and dynamic entries in the ARP resolution table oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter4 Configuring the Address Resolution Protocol W Showing ARP Information To display the global ARP configuration enter show arp config Table 4 4 describes the fields in the sh
151. riority for the interface The priority of the interface is an integer from 0 to 255 The default is 1 which is the highest router priority A value of 0 signifies that the CSS is not eligible to become the designated router on a particular network If a designated router exists on the network it remains the designated router regardless of its router priority To make the interface ineligible to become a designated router enter config circuit ip VLAN6 3 1 2 2 ospf priority 0 To reset the router priority to the default value of 1 enter config circuit ip VLAN6 3 1 2 2 no ospf priority Setting the Retransmission Interval The retransmission interval is the number of seconds between link state advertisement retransmissions for adjacencies belonging to an interface OSPF creates adjacencies between neighboring routers for the purpose of exchanging routing information The CSS also uses the interval when retransmitting database descriptions and link state request packets Use the ospf retransmit command to set the retransmit interval for the interface Enter a number from to 3600 seconds 1 hour The default is 5 seconds I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information To set the retransmission interval to 10 seconds enter config circuit ip VLAN6 3 1 2 2 ospf retransmit 10 To r
152. rts and circuits for Interfaces and Circuits operation Chapter 2 Configuring Configure spanning tree bridging Spanning Tree Bridging for the CSS Chapter 3 Configuring Configure OSPF routing protocol Open Shortest Path First OSPF Chapter 4 Configuring Configure Address Resolution Protocol ARP the Address Resolution Protocol Chapter 5 Configuring Configure Routing Information Protocol RIP Routing Information Protocol Chapter 6 Configuring Configure Internet Protocol IP routing the Internet Protocol Cisco Content Services Switch Routing and Bridging Configuration Guide rok i OL 4580 01 Preface Chapter Related Documentation W Description Chapter 7 Configuring the Cisco Discovery Protocol Configure Cisco Discovery Protocol CDP Chapter 8 Configuring the DHCP Relay Agent Configure Dynamic Host Configuration Protocol DHCP Related Documentation In addition to this document the CSS documentation set includes the following Document Title Description Release Note for the Cisco 11500 Series Content Services Switch This release note provides information on operating considerations caveats and command line interface CLI commands for the Cisco 11500 series CSS Cisco 11500 Series Content Services Switch Hardware Installation Guide This guide provides information for installing cabling and powering the Cisco 11500
153. rval to the default of 600 enter config circuit VLAN7 no router discovery max advertisement interval Configuring the Router Discovery Min Advertisement Interval By default the minimum router advertisement interval is 0 75 times the maximum advertisement value To configure the minimum interval timer used for router discovery advertisement from the circuit VLAN use the router discovery min advertisement interval command This command defines the minimum interval in seconds between sending advertisements Enter an integer from 0 to 1800 The default is 0 75 times the max advertisement interval If this value is greater than 0 it must be less than the value specified using the router discovery max advertisement interval command For example config circuit VLAN7 router discovery min advertisement interval 100 To reset the minimum router advertisement interval to the default of 0 75 times the maximum advertisement value enter config circuit VLAN7 no router discovery min advertisement interval Cisco Content Services Switch Routing and Bridging Configuration Guide EEN OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Showing Circuits Configuring Circuits W Use the show circuits command to show circuit information This command provides the following options e show circuits Displays all circuit information for circuits that are currently up e show circuits all Displays all circu
154. rvices Switch Administration Guide oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter6 Configuring the Internet Protocol HZ IP Configuration Quick Start IP Configuration Quick Start Table 6 1 provides a quick overview of the steps required to setup the IP configuration for the CSS Each step includes the CLI command required to complete the task For a complete description of each feature and all the options associated with the CLI command see the sections following Table 6 1 Table 6 1 IP Configuration Quick Start Task and Command Example 1 Configure an IP route for the CSS You can configure a static route default route a blackhole route or a firewall route For example to configure a static IP route enter config ip route 192 168 0 0 16 192 167 1 1 2 Optional If you do not want the CSS to start an implicit service for the next hop of a static route specify that no implicit service is established to the next hop of the static route By default the CSS establishes an implicit service for the gateway address when a static route is defined config ip no implicit service 3 Optional Enable box to box redundancy to provide chassis level redundancy between two identically configured CSSs config ip redundancy 4 Optional Set the equal cost multipath ECMP selection algorithm and the preferred reverse egress path config ip ecmp add
155. rvices Switch Routing and Bridging Configuration Guide ias E OL 4580 01 CHAPTER Configuring Spanning Tree Bridging for the CSS The CSS supports configuration of Spanning Tree Protocol STP bridging Spanning tree bridging detects and then prevents loops in the network Use the bridge command to configure global spanning tree bridging options for the CSS such as bridge aging time forward delay time hello time interval and maximum age Make sure you configure the spanning tree bridging parameters the same on all switches running STP in the network Note When connecting a Cisco Catalyst switch to a CSS using an 802 1Q trunk and the STP the Catalyst runs a spanning tree instance for each VLAN When you configure an 802 1Q trunk on an Ethernet interface for the Catalyst switch the bridge protocol data units BPDUs are tagged with the corresponding VLAN ID and the destination MAC address changes from the standard 01 80 C2 00 00 00 to the proprietary 01 00 0c cc cc cd This modification allows Cisco switches operating in a non Cisco a mix of other vendors 802 1Q trunk environment to maintain spanning tree states for all VLANs Although the CSS maintains a spanning tree instance for each VLAN as well the CSS uses the standard 01 80 C2 00 00 00 destination MAC address for all BPDUs tagged or untagged When you connect a Cisco Catalyst switch to a CSS over an 802 1Q trunk the result is that neither switch recognizes the other s BPDUs
156. s 6 20 E Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Contents W CHAPTER 7 Configuring the Cisco Discovery Protocol 7 1 CDP Configuration Quick Start 7 2 Enabling CDP 7 3 Setting the CDP Hold Time 7 3 Setting the CDP Transmission Rate 7 4 Showing CDP Information 7 4 CHAPTER 8 Configuring the DHCP Relay Agent 8 1 DHCP Relay Agent Configuration Quick Start 8 2 Adding a DHCP Destination on a Circuit 8 3 Enabling and Disabling DHCP on the Circuit 8 3 Defining the Hops Field Value for Forwarding DHCP Messages 8 4 Displaying the DHCP Relay Configuration 8 4 INDEX Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 E E Contents Cisco Content Services Switch Routing and Bridging Configuration Guide a OL 4580 01 Figure 1 1 CSS Interfaces and Circuits 1 3 Figure 1 2 Interface Trunking Between VLANs 1 3 Figure 1 3 Example of SPAN Connectivity 1 45 Figure 3 1 Basic OSPF Network Topology 3 3 Figure 6 1 Example of Opportunistic Layer 3 Forwarding 6 11 Cisco Content Services Switch Routing and Bridging Configuration Guide roca EE Figures Cisco Content Services Switch Routing and Bridging Configuration Guide Px g OL 4580 01 TABLES Table 1 1 Interface and Circuit Configuration Quick Start 1 4 Table 1 2 Field Description for the show bridge port fast Command 1 18 Table 1 3 Field Descriptio
157. s Switch Routing and Bridging Configuration Guide E W index OSPF IP interface running config example 3 10 P packet storms preventing 2 5 panning tree bridging running config example 2 3 pathcost configuring for bridging 1 15 port analyzing 1 44 auto negotiate 1 8 configuring Port Fast 1 16 DSPAN 1 44 enabling BPDU guard 1 17 enabling Port Fast 1 17 interfaces configuring 1 6 mirroring 1 44 monitoring 1 44 SSPAN 1 44 Port See also interface Port Fast BPDU guard 1 17 configuring 1 16 displaying information 1 18 enabling 1 17 priority configuring for bridging 1 15 protocol ARP configuring 4 1 CDP configuring 7 1 IP configuring 6 1 publications obtaining additional xxiv Q quick start interface and circuit 1 4 OSPF 3 7 redundancy disabling 6 8 removing DHCP relay destination address 8 3 IP address from a circuit 1 32 restarting an interface 1 30 restoring bridge path cost default value 1 15 bridge priority default value 1 15 bridge state default value 1 16 broadcast IP address 1 32 default aging time 2 3 default bridge forward time 2 4 default bridge hello time 2 4 default bridge max age 2 5 default bridge priority 1 15 E Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 default broadcast IP address 1 32 default path cost 1 13 1 15 default VLAN 1 11 router discovery advertisement interval timers 1 36 router discovery default 1 34
158. s detected on the interface later than 512 bit times in to the transmission of a packet Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Chapter1 Configuring Interfaces and Circuits Configuring Interfaces W Shutting Down an Interface A To shut down an interface use the admin shutdown or shut command Caution Shutting down an interface terminates all connections to the interface For example e To shut down interface e3 on the CSS 11501 with the admin shutdown command enter config if e3 admin shutdown e To shut down interface e3 on the CSS 11501 with the shut command enter config if e3 shut When you use the shut command the CSS changes the shut command to the admin shutdown command in the running configuration Note If you configure the redundancy phy command on an interface and then disable the interface using the admin shutdown command the master CSS fails over to the backup CSS To prevent the CSS from failing over when you administratively disable the interface remove the redundancy phy command by entering no redundancy phy before you enter the admin shutdown command on that interface Shutting Down All Interfaces A To shut down all interfaces simultaneously use the admin shutdown command This command is only available in the SuperUser mode The admin shutdown command provides a quick way to shut down all physical devices in th
159. s in Exchange state or greater are used by the flooding procedure In fact these adjacencies are fully capable of transmitting and receiving all types of OSPF routing protocol packets Loading In this state the CSS sends Link State Request packets to the neighbor requesting the more recent LSAs that have been discovered but not yet received in the Exchange state Full In this state the neighboring routers are fully adjacent These adjacencies will now appear in router LSAs and network LSAs Type Always dynamic Rxmt_Q The number of LSAs to retransmit to the neighbors Cisco Content Services Switch Routing and Bridging Configuration Guide M342 OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF OSPF Configuration in a Startup Configuration File _ OSPF Configuration in a Startup Configuration File The following example shows an OSPF configuration in a startup configuration file LARK KR KKK ARK K RRR KK KKK KK KKAKKKK QLOBAL KKK KKK KKK KKK KKK KKK KK KKK KKK ospf router id 121 23 21 1 ospf enable ospf area 1 1 1 1 ospf as boundary ospf advertise 192 168 4 15 255 255 255 0 ospf redistribute static PRK KKKKKKKKKKKKKKKKKKKKK KK INTERFACE kkkkkkkkkkkkkkkkkkkkkkkkxk interface ethernet 10 bridge vlan 6 LRKKKKKKKKKKKKKKKKKKKKKKKKK CIRCUIT KKK KK KKK KKK KK KKK KKK KKK KKEKEK circuit VLAN6 ip address 192 168 2 2 255 255 255 0 ospf ospf area 1 1 1 1 ospf priority
160. s the complete ARP resolution table with IP addresses MAC addresses and resolution type excluding entries from the CSS Ethernet management port config Displays ARP global configuration parameters The screen displays the response timeout and the flush timeout in seconds file Displays the hosts that are reachable using ARP The screen displays the IP addresses of the host systems management port Displays the ARP entries from the CSS Ethernet management port The ARP resolution table displayed through the show arp command displays these entries Note The CSS Ethernet management port IP address appears as an entry in the Management Port ARP cache This is normal CSS behavior summary Displays the total number of static entries total number of dynamic entries and total number of entries in the ARP resolution table excluding the entries from the CSS management port ip_or host The IP address for the system to display its resolution Enter the address in dotted decimal format for example 192 168 11 1 or mnemonic host name format for example myname mydomain com You cannot enter an ARP entry derived from the CSS Ethernet management port For example to display the complete ARP resolution table enter show arp Cisco Content Services Switch Routing and Bridging Configuration Guide ae D OL 4580 01 Chapter 4 Configuring the Address Resolution Protocol Showing ARP Information Table 4 2 desc
161. scribe the collected states of the router interfaces e Summary Net for summary LSAs originated by ABRs The LSAs describe routes to networks Link State ID This field identifies the piece of the routing domain that is being described by the LSA Depending on the link state type the Link State ID has following values e For the ASB Summary type the ID is the router ID of the ASBR e For the ASE type the ID is the destination network IP address e For Network type the ID is the IP interface address of the network designated router e For Router type the ID is the originating router s Router ID e For Summary Net type the ID is the destination network IP address Cisco Content Services Switch Routing and Bridging Configuration Guide M334 OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Showing OSPF Information W Table 3 6 Field Descriptions for the show ospf Isdb Command continued Field Description ADV Router This field specifies the OSPF Router ID of the LSA originator as follows e ASB Summary LSAs the originators are the ABRs e AS external LSAs the originators are ASBRs e Network LSAs the originators are network designated routers e Router LSAs this field is identical to the Link State ID field e Summary LSAs the originators are the ABRs Age The age of the LSA in seconds The age is set to 0 when the LSA is originated Sequence A signed 32 bit i
162. series CSS In addition this guide provides information about CSS specifications cable pinouts and hardware troubleshooting oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Preface HZ Related Documentation Document Title Description Cisco Content Services Switch Administration Guide This guide describes how to perform administrative tasks on the CSS including booting and logging in to the CSS upgrading your CSS software and configuring the following e User profile and CSS parameters e Logging including displaying log messages and interpreting sys log messages e DNS server for hostname resolution e User profile and CSS parameters e SNMP e RMON e XML documents to configure the CSS e CSS scripting language e Offline Diagnostic Monitor Offline DM menu Cisco Content Services Switch Content Load Balancing Configuration Guide This guide describes how to perform CSS content load balancing configuration tasks including e Services e Owners e Content rules e Sticky parameters e Flow and port mapping e HTTP header load balancing e Content caching e Content replication Cisco Content Services Switch Routing and Bridging Configuration Guide OL 4580 01 Preface Document Title Related Documentation Description Cisco Content Services Switch Global Server Load Balancing Configuration Guide This gu
163. ss hours to resolve the situation Priority 3 P3 Operational performance of your network is impaired but most business operations remain functional You and Cisco will commit resources during normal business hours to restore service to satisfactory levels oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Preface HZ Obtaining Additional Publications and Information Priority 4 P4 You require information or assistance with Cisco product capabilities installation or configuration There is little or no effect on your business operations Obtaining Additional Publications and Information Information about Cisco products technologies and network solutions is available from various online and printed sources Cisco Marketplace provides a variety of Cisco books reference guides and logo merchandise Go to this URL to visit the company store http www cisco com go marketplace The Cisco Product Catalog describes the networking products offered by Cisco Systems as well as ordering and customer support services Access the Cisco Product Catalog at this URL http cisco com univercd cc td doc pcat Cisco Press publishes a wide range of general networking training and certification titles Both new and experienced users will benefit from these publications For current Cisco Press titles and other information go to Cisco Press online at this URL http www ciscopress com
164. st 10 To reset the equal cost routes to its default value of 15 enter config no ospf equal cost Configuring Summarized Routes at an ABR If the CSS is an ABR you can configure it to advertise a single summary route or network ranges that cover all the individual networks within the specified range This summarization helps control routing table sizes and prevents the constant changing of routes whenever an interface within an area comes online or goes offline These route changes do not cause route changes in backbone ABRs and other area routers Use the ospf range command to specify the IP address range to summarize routes at the ABR This summarization applies to inter area paths that are paths to destinations in other OSPF areas You can also determine whether you want to advertise this range Disable OSPF before you enter the ospf range command Cisco Content Services Switch Routing and Bridging Configuration Guide P34 OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF Configuring OSPF onthe CSS W Define an address range by specifying an IP address and subnet mask that represents networks in the area being summarized Enter the IP address and subnet mask in dotted decimal notation for example 192 168 128 0 255 255 224 0 You can also enter the mask in CIDR bit count notation format for example 24 To configure the CSS as an ABR with an area ID of 0 1 0 1 with a collection of destinations betwee
165. ster No VIP IS NOT advertised Yes Are OSPF advertisements configured No Yes advertised VIP defined in a rule or source group No Yes Is the VIP a redundant VIP Is the VIP defined on a rule Yes Is at or set of rules No Is there least one rule N a source group Yes with the VIP 2 with the VIP defined active and active Yes No Is at least one No VIP IS NOT service alive for the advertised active rule Yes VIP IS Lall advertised Configuring OSPF on the CSS W Address IS NOT advertised Address is advertised unconditionally 96931 oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF E Configuring OSPF on the CSS The ASBR can perform external route summarization to consolidate multiple routes into a single advertisement For a CSS this consolidation is useful when you want to advertise VIP addresses for content as OSPF AS external ASE through all OSPF interfaces Use the ospf advertise command to advertise a route as OSPF ASE through all OSPF interfaces To stop the advertisement of the route use the no form of the ospf advertise command as described later in this section amp Note When using OSPF to advertise a VIP address do not configure th
166. t The total number of packets that higher level protocols requested be transmitted to a non unicast for example a subnetwork broadcast or subnetwork multicast address including those packets that were discarded or not sent Out Errors The number of outbound packets that could not be transmitted because of errors Out Discards The number of outbound packets that were chosen to be discarded even though no errors had been detected to prevent their being transmitted One possible reason for discarding such a packet could be to free up buffer space To clear interface statistics use the clear statistics command in SuperUser mode For example clear statistics Cisco Content Services Switch Routing and Bridging Configuration Guide 126 OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces Ti Showing Ethernet Interface Errors To list the errors on an Ethernet interface use the show ether errors command and options When required enter the interface name as a case sensitive unquoted text string To see a list of interfaces enter show ether errors The command provides the following options show ether errors Displays the extended 64 bit statistics for errors on all Ethernet interfaces in the CSS The Enterprise ap64Stats MIB defines these statistics show ether errors interface name Displays the extended 64 bit statistics for errors on a specific Ethernet inter
167. t the ASE type is ASE type2 which is the external cost to reach the route ASE typel combines the external and internal costs Tag The 32 bit tag value to advertise the route The value is not used by OSPF oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter3 Configuring Open Shortest Path First OSPF HI Showing OSPF Information Showing the Redistribution Policy To show the configured redistribution policy into OSPF enter show ospf redistribute Table 3 9 describes the fields in the show ospf redistribute command output Table 3 9 Field Descriptions for the show ospf redistribute Command Static RIP Local or Firewall Field Description Routes Redistribution Indicates whether the redistribution of static RIP local or firewall routes is enabled or disabled If route redistribution is enabled the configured metric type and tag fields are displayed Route Metric displayed when redistribution is enabled The external cost for the route The cost can range from 1 to 16777215 The default is 1 Route Type displayed when redistribution is The ASE type either ASE Typel or ASE Type2 By default the type is aseType2 The difference between typel and type2 is how the cost is calculated For a type 2 enabled ASE only the external cost metric is used when comparing multiple paths to the same destination For typel ASE th
168. te the specified VLAN where y instructs the software to create the VLAN and n cancels the VLAN creation For example to configure Gigabit Ethernet port 1 in slot 1 for use in VLAN2 VLAN3 and VLANS enter config if 1 1 trunk config if 1 1 vlan 2 Create VLAN lt 2 gt y n y config if vlan 1 1 2 vlan 3 Create VLAN lt 3 gt y nl y config if vlan 1 1 3 vlan 9 Create VLAN lt 9 gt y nl y config if vlan 1 1 9 The no trunk command turns off all trunking removes all specified vlan commands associated with the interface and deletes this information from the running configuration The interface is returned to VLAN1 by default To disable trunking on the specified interface and associated VLANS enter config trunkif 2 3 no trunk To display all interfaces and the VLANs to which they are configured use the show circuit command In the show circuit output VLANs appear as VLAN uppercase with no space before the VLAN number For an interface that has trunking enabled an n where n is the associated VLAN number is appended to the prefix In this example 1 4 1 indicates slot 1 port 4 VLAN1 See the Showing Circuits section for information about the show circuits command Cisco Content Services Switch Routing and Bridging Configuration Guide i12 E OL 4580 01 Chapter1 Configuring Interfaces and Circuits Configuring Interfaces W Selecting a Default VLAN in a Trunk To d
169. tered at initialization or boot time through ARP enter show arp file Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 g ao Chapter4 Configuring the Address Resolution Protocol W Showing ARP Information Cisco Content Services Switch Routing and Bridging Configuration Guide a0 OL 4580 01 CHAPTER Configuring Routing Information Protocol The CSS enables you to configure global Routing Information Protocol RIP attributes used to advertise routes on the CSS By default RIP advertises RIP routes and local routes for interfaces running RIP The rip command advertises other routes The timers used by RIP in the CSS include the following default values These RIP timer values are not user configurable in the CSS Transmit Tx time that is a random value between 15 and 45 seconds it avoids router synchronization problems Route expiration time of 180 seconds if the CSS loses the link to the next hop router the route is immediately removed Hold down time the amount of time the CSS transmits with an infinite metric of 120 seconds This chapter contains the following major sections amp RIP Configuration Quick Start Configuring RIP Advertise Configuring RIP Redistribute Configuring Equal Cost RIP Routes Showing RIP Configurations Note If you prefer OSPF instead of RIP on the CSS refer to Chapter 3 Configuring Open Shortest Path First OSPF for information
170. terface use the router discovery command When enabled router discovery transmits packets with the all hosts multicast address of 244 0 0 1 Note To enable an interface to transmit packets with the limited broadcast multicast address of 255 255 255 255 use the router discovery limited broadcast command in circuit mode see the Configuring Router Discovery Limited Broadcast section Router discovery is disabled by default oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter1 Configuring Interfaces and Circuits WE Configuring Circuits Use the router discovery preference command to specify the preference level for the advertised CSS circuit IP address relative to other devices on the same network The value is an integer from 0 default to 65535 If you use the default value you do not need to use this command For example to specify a router discovery preference value of 100 enter config circuit ip VLAN7 192 168 1 58 router discovery config circuit ip VLAN7 192 168 1 58 router discovery preference 100 To disable router discovery enter config circuit ip VLAN7 192 168 1 58 no router discovery To restore the router discovery preference value to the default of 0 enter config circuit ip VLAN7 192 168 1 58 no router discovery preference Enabling and Disabling a Circuit IP By default the IP interface on a circuit is enabled
171. terval 1 36 Configuring the Router Discovery Min Advertisement Interval 1 36 Showing Circuits 1 37 Showing IP Interfaces 1 38 Configuring RIP for an IP Interface 1 39 Enabling RIP on an IP Interface 1 39 Configuring a RIP Default Route 1 40 Configuring a RIP Receive Version 1 40 Configuring RIP Send Version 1 40 Configuring RIP Packet Logging 1 41 Showing RIP Configurations for IP Addresses 1 41 Configuring the Switched Port Analyzer Feature 1 44 Configuring SPAN ona CSS 1 46 Verifying the SPAN Configuration on a CSS 1 47 CHAPTER 2 Configuring Spanning Tree Bridging forthe CSS 2 1 CSS Spanning Tree Bridging Quick Start 2 2 Configuring Spanning Tree Bridge Aging Time 2 3 Configuring Spanning Tree Bridge Forward Time 2 4 Configuring Spanning Tree Bridge Hello Time 2 4 Configuring Spanning Tree Bridge Max Age 2 4 Configuring Spanning Tree Bridge Priority 2 5 Disabling Bridge Spanning Tree 2 5 Showing Bridge Configurations 2 6 Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 TEE E Contents CHAPTER 3 Configuring Open Shortest Path First OSPF 3 1 OSPF Overview 3 2 OSPF Routing Hierarchy 3 3 Autonomous System 3 4 Areas 3 4 Backbone Area 3 4 Area Border Routers 3 5 Stub Area 3 5 Autonomous System Boundary Routers 3 5 Link State Databases 3 6 CSS OSPF Configuration Quick Start 3 7 Global OSPF Configuration Quick Start 3 7 OSPF IP Interface Configuration Quick Start 3 9 Verifyi
172. the other devices on the link to achieve the maximum common level of operation When using Fast Ethernet ports with older equipment that cannot transmit the duplex and speed with the signals you can manually configure the speed 10 Mbps 100 Mbps and duplex half or full duplex of the CSS port to match the transmitting equipment When you use Gigabit Ethernet ports if the link does not come up perhaps due to traffic congestion you may need to force the CSS and its link partner in to a specific mode The CSS allows you to manually select a full duplex and flow control pause frame mode Flow control allows the CSS to control traffic during congestion by notifying the other port to stop transmitting until the congestion clears When the other device receives the pause frame it temporarily stops transmitting data packets When the CSS detects local congestion and becomes overwhelmed with data the Gigabit Ethernet ports transmits a pause frame Both the CSS Gigabit Ethernet and its link partner must be configured with the same pause method asymmetric symmetric or both By default all Gigabit Ethernet ports are configured to full duplex mode with symmetric pause pause frames transmitted and received by the CSS Note If you configure the redundancy phy command on an interface of the master CSS in a box to box redundancy configuration and then make a change to the port settings of that interface using the phy command for example ch
173. the RIP interface oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide E Chapter 5 Configuring Routing Information Protocol E Showing RIP Configurations Table 5 2 Field Descriptions for the show rip Command continued Field Description Tx Log The setting for logging RIP packet transmissions enabled or disabled The default setting is disabled Rx Log The setting for logging RIP packets received enabled or disabled The default setting is disabled To display global RIP statistics enter show rip globals Table 5 3 describes the fields in the show rip globals command output Table 5 3 Field Descriptions for the show rip globals Command Field Description RIP Route Changes The global number of route changes made to the IP route database by RIP RIP Query Responses The global number of query responses sent to RIP query from other systems To display the RIP interface statistics for all RIP interface entries enter show rip statistics Cisco Content Services Switch Routing and Bridging Configuration Guide m OL 4580 01 Chapter 5 Configuring Routing Information Protocol Showing RIP Configurations Table 5 4 describes the fields in the show rip statistics command output Table 5 4 Field Descriptions for the show rip statistics Command Field Description System Route Changes The global number of route changes made to t
174. tistics e Showing a Summary of IP Global Statistics Cisco Content Services Switch Routing and Bridging Configuration Guide Ca OL 4580 01 Chapter 6 Configuring the Internet Protocol Showing IP Configuration Information W Showing IP Global Configuration Parameters Use the show ip config command to display IP global configuration parameters These parameters show the state enabled or disabled of the source route option forward IP broadcasts record route option and IP route change logging The show ip config command also shows the value for the orphaned route timer Table 6 2 describes the fields in the show ip config output Table 6 2 Field Descriptions for the show ip config Command Field Description Source Route Indicates whether processing of source routed frames is Option enabled or disabled Forward IP Indicates whether forwarding IP broadcasts is enabled or Broadcasts disabled Orphaned Route The setting for the orphaned route timer Timer Record Route Option Indicates whether processing with the record route option is enabled or disabled Multiple Equal Cost Path Algorithm The setting for the equal cost multipath selection algorithm The possible settings are as follows e Address Choose among alternate paths based on IP addresses e Roundrobin Alternate between equal paths in roundrobin fashion IP Route Change Logging Indicates whether logging IP route chan
175. to a network analyzer protocol analyzer or an RMON probe SPAN allows you to monitor CSS ports without e Disconnecting cables e Requiring multiple analyzers or probes e Needing hubs or switches Cisco Content Services Switch Routing and Bridging Configuration Guide iaa OL 4580 01 Chapter1 Configuring Interfaces and Circuits Configuring the Switched Port Analyzer Feature i Figure 1 3 shows an example of SPAN connectivity with a protocol analyzer connected to port 2 13 on a CSS In this example the CSS copies all packets received or transmitted on Fast Ethernet FE port 2 4 SSPAN port to FE port 2 13 DSPAN port The analyzer connected to DSPAN port 2 13 receives all network traffic that the SSPAN port receives or transmits Figure 1 3 Example of SPAN Connectivity SSPAN Rx SSPAN port DSPAN port Normal egress port Cisco SYSTEMS From Client Copy of To Server SSPAN Rx frame Protocol analyzer or Identical packets RMON device SSPAN Tx Normal egress port SSPAN port DSPAN port Cisco Systems 87482
176. ts by the CSS to an assumed inactive neighbor router in a non broadcast multi access network Use the ospf poll command to set the poll interval for the interface The poll interval should be a value that is greater than the hello time interval Enter a number from 1 to 2 147 483 647 The default is 120 seconds Note The ospf poll command has no effect when you operate the CSS over a broadcast LAN that is an Ethernet network Cisco Content Services Switch Routing and Bridging Configuration Guide M326 i OL 4580 01 Chapter 3 Configuring Open Shortest Path First OSPF Configuring OSPF on a CSS IP Interface W For example to set the poll interval to 200 seconds enter config circuit ip VLAN6 3 1 2 2 ospf poll 200 To reset the poll interval to the default value of 120 seconds enter config circuit ip VLAN6 3 1 2 2 no ospf poll Setting the Priority of the CSS To avoid the need for each router on a LAN to talk to every router on a network that has more than two attached routers one router is elected as the designated router Designated routers advertise network link states for attached network segments An LSA lists all routers that are connected to a segment The priority determines which router is the designated router The router with the highest priority becomes the designated router In case of a tie routers use their router ID as a tie breaker Use the ospf priority command to set the router p
177. tside the area Because of this restriction of topological information you can control traffic flow between areas and reduce routing traffic when the entire autonomous system is a single routing domain A backbone area is responsible for distributing routing information between the areas of an autonomous system When OSPF routing occurs outside of an area this is called inter area routing The backbone itself has all the properties of an area It consists of ABRs and routers and networks only on the backbone As shown in Figure 3 1 area 0 0 0 0 is an OSPF backbone area Note that a designated OSPF backbone area has a reserved ID of 0 0 0 0 Cisco Content Services Switch Routing and Bridging Configuration Guide aa OL 4580 01 Chapter3 Configuring Open Shortest Path First OSPF OSPF Overview W Area Border Routers Stub Area ABRs have multiple interfaces that connect directly to networks in two or more areas An ABR runs a Separate copy of the OSPF algorithm and maintains separate routing data for each area that is connected to it including the backbone area ABRs also send configuration summaries for their attached areas to the backbone area which distributes this information to other OSPF areas in the autonomous system In Figure 3 1 there are two ABRs ABR 1 interfaces area 1 1 1 1 to the backbone area ABR 2 interfaces the backbone area to area 1 1 1 2 a stub area Note ABRs are always backbone routers You must c
178. umber of times TCP connections have made a direct transition to the Listen state from the SYN RCVD state Established Conns The number of TCP connections for which the current state is either Established or Close Wait Output Segments The total number of segments sent including those on current connections but excluding those containing only retransmitted octets Input Errors The total number of segments received in error for example bad TCP checksums Min Retransmit Time The minimum value permitted by a TCP implementation for the retransmission timeout measured in milliseconds Max TCP Connections The total number of TCP connections that the CSS supports Passive Opens The number of times TCP connections have made a direct transition to the SYN RCVD state from the LISTEN state Resets The number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE WAIT state I oL 4580 01 Cisco Content Services Switch Routing and Bridging Configuration Guide Chapter6 Configuring the Internet Protocol W Showing IP Configuration Information Table 6 5 Field Descriptions for the show ip statistics Command continued Field Description Input Segments The total number of segments received including those received in error This count includes segments received on currently established connections
179. vailable Because of the possibility of data being lost if the next hop becomes unavailable use of the ip no implicit service command is strongly discouraged Note Static routes can sometimes appear in the CSS routing table even when you have an implicit service for the next hop address the default setting and the internal keepalive is down When the CSS detects the ARP mapping for the next hop in the static route the CSS continues to list that route in the routing table regardless of the state of the ICMP service keepalive Down or Up When you implement the ip no implicit service global configuration command this action does not affect previously configured static routes The ip no implicit service command affects only those static routes added after you enable the command We recommend you reboot the CSS after you modify the configuration to ensure all static routes are the same which is useful for network monitoring and troubleshooting If you wish to stop the implicit service for a previously configured static route then you must delete and reconfigure the static route For example config ip no implicit service To reset the default setting enter config no ip no implicit service Cisco Content Services Switch Routing and Bridging Configuration Guide lt OL 4580 01 Chapter 6 Configuring the Internet Protocol Configuring an IP Source Route W Configuring an IP Source Route A To enable the
180. w the entire OSPF link state database LSDB or its specific entry types with the show ospf Isdb command The options for the show ospf Isdb command are as follows e show ospf Isdb router Displays router LSAs that describe the states of the router interfaces e show ospf Isdb network Displays network LSAs that describe the set of routers attached to the network e show ospf Isdb external Displays AS external LSAs that describe routes to destinations external to the AS e show ospf Isdb summary Displays summary LSAs that describe summarized routes to the network e show ospf Isdb asbr_summ Displays summary LSAs that describe routes to AS boundary routers Cisco Content Services Switch Routing and Bridging Configuration Guide I oL 4580 01 BEN Chapter3 Configuring Open Shortest Path First OSPF WE Showing OSPF Information To show the entire database enter show ospf lsdb Table 3 6 describes the fields in the show ospf Isdb command output Table 3 6 Field Descriptions for the show ospf Isdb Command Field Description Area The ID for the area Type The link state type The types are as follows e ASB Summary for summary LSAs originated by ABRs The LSAs describe routes to ASBRs e ASE for AS external LSAs that describe routes to destinations external to the autonomous system e Network for the network LSAs that describe the set of routers attached to the network e Router for router LSAs that de
181. witch Routing and Bridging Configuration Guide N 10 OL 4580 01
182. y bridge forwarding or bridge status for a specific VLAN in the CSS enter the show bridge forwarding or the show bridge status command with the VLAN number Entering the show bridge command with a VLAN number returns a list of available VLANs Table 1 3 describes the fields in the show bridge forwarding command output Table 1 3 Field Descriptions for the show bridge forwarding Command Field Description VLAN The bridge interface virtual LAN number MAC Address The MAC address for the entries Port Number The port number for the bridge forwarding table Table 1 4 describes the fields in the show bridge status command output Table 1 4 Field Descriptions for the show bridge status Command Field Description STP State The state of the Spanning Tree Protocol Enabled or Disabled Root Max Age The timeout period in seconds during which the host times out root information Root Hello Time The interval in seconds that the root bridge broadcasts its hello message to other CSSs Root Fwd Delay The delay time in seconds that the root bridge uses for forward delay Designated Root The bridge ID for the designated root Bridge ID The bridge ID of this bridge Port The port ID Cisco Content Services Switch Routing and Bridging Configuration Guide e120 OL 4580 01 _ Chapter 1 Configuring Interfaces and Circuits Configuring Interfaces Table 1 4 Field Descriptions for the s

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