Cisco Systems OL-1911-05 User's Manual
Contents
1. Supports integrated routing and bridging IRB N Note The Catalyst 8540 MSR enhanced ATM router module does not support LANE clients The ATM router module has no external interfaces All traffic is sent and received through internal interfaces to the switching fabric The Catalyst 8540 MSR enhanced ATM router module has two internal ports Catalyst 8540 MSR ATM Router M odule Features The Catalyst 8540 MSR ATM router module offers the following benefits Interoperates with all of the Layer 3 switching interface modules available for the Catalyst 8540 CSR chassis For more information on the Catalyst 8540 CSR Layer 3 interface modules refer to the ATM and Layer 3 Module Installation Guide Provides an integrated high performance link between ATM and Layer 3 cards The ATM router module provides an aggregate switching capacity of 2 Gbps between ATM and Layer 3 ports 2 x 1 Gbps interfaces per module Data transfers to the switch core at the rate of 1 Gbps Simplifies management Hot swappable e Occupies only one slot in the chassis Supports LANE clients LECs Supports RFC 1483 SVCs and PVCs with AALS SNAP encapsulation e Supports RFC 1577 SVCs and PVCs Supports Soft PVCs e Supports VBR Supports Shaped Tunnels Supports OAM based PVC management e Supports BVI Supports IRB The ATM router module has no external interfaces All traffic is sent and received through internal inte2. N Note Broadcast packets dropped ACL packets packets dropped due to expiration of the designed Time To Live and bad CRC packets are included in the rate limit calculation This might cause a problem if the policed port is not part of a point to point connection and is connected via a hub rather than a layer 2 switch Configuring Rate Limiting Enter the following command in interface configuration mode to configure rate limiting on your switch router Command Purpose rate limit input output rate burst Configures rate limiting on an interface For more detailed configuration information refer to the Policing and Shaping Overview section of the Cisco IOS Quality of Service Solutions Configuration Guide ATM and Layer 3 Switch Router Softw are Configuration Guide Ka OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces About Rate Limiting W Example The following is an example of how to configure rate limiting on your switch router Router configure terminal Enter configuration commands one per line End with CNTL Z Router config interface 0 0 0 Router config if rate limit input 1000000 20000 Router config if rate limit output 100000 30000 Router config if exit ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 24 29 Chapter 24 Configuring ATM Router Module Interfaces HI About Rate Limiting ATM and Layer 3 Switch Router
3. exit Switch config Exits interface configuration mode Switch config atm route addr prefix atm cardlsubcard port internal Configures a static route through the ATM router module interface See the note that follows this table 1 The address prefix is the first 19 bytes of the NSAP address Note The end system identifier ESI address form is preferred in that it automatically handles the advertising of the address Use the network service access point NSAP form of the command when you need to define a full 20 byte unique address with a prefix unrelated to the network prefix on that interface You only need to specify a static route when configuring an ARP client using an NSAP address mi ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Configuring Classical IP over ATM in an SVC Environment Hl NSAP Address Example Figure 24 7 shows three ATM switch routers and a router connected using classical IP over ATM Figure 24 7 Classical IP over ATM Connection Setup Switch client B Router client C 123 233 45 3 123 233 45 6 6 ATM network 123 233 45 0 K 4 L 1 Switch ARP server Switch client A amp 123 233 45 2 123 233 45 1 5 The following example shows how to configure the ATM router module interface ATM 1 0 0 of Client A in Figure 24 7 using the NSAP address Client A config interface at
4. or vice versa Otherwise you might have unreachable route destinations The ATM router module does not initialize if it replaces an ATM port adapter or interface module when hierarchical VP tunnels are globally enabled Reboot the switch to initialize the ATM router module IP multicast is only supported over 1483 LLC SNAP encapsulated PVCs ATM Director does not support any PVC commands Even though each ATM router module interface supports a maximum of 2048 VCs only 1400 to 1500 external VCs can be configured Internal VCs use up the rest Do not install an ATM router module in a slot pair where hierarchical VP tunnels are configured Slot pairs 0 and 1 2 and 3 9 and 10 and 11 and 12 use the same switching modules for scheduling For example do not install an ATM router module in slot 10 when hierarchical VP tunnels are configured on slot 9 For more information on hierarchical VP tunneling restrictions see Chapter 6 Configuring Virtual Connections The Catalyst 8540 MSR enhanced ATM router modules do not support the following features Tag edged router functionality Fast Simple Server Redundancy Protocol FSSRP Bridging for multiplexing device encapsulation Protocol Independent Multicast PIM IP multipoint signalling PIM nonbroadcast multiaccess NBMA PIM over ATM multipoint signalling Translation from IP quality of service QoS to ATM QoS Resource Reservation Protocol RSVP to ATM SVC PVC management using ILMI
5. and BUS It separates the control and data path so that all LANE control messages are handled by the route processor and data messages are switched on the ATM router module port as shown in Figure 24 2 The LEC is configured on the ATM router module interface but control message traffic is sent to the route processor by the ATM router module The ATM router module sends all ATM data traffic to the appropriate VCs ATM and Layer 3 Switch Router Softw are Configuration Guide E ma Chapter 24 Configuring ATM Router M odule Interfaces Overview ofthe ATM Router Module Hi Figure 24 2 ATM Router Module Traffic Flow Catalyst 8540 MSR ATM cells al i Interface slot LANE signalling gt ATM interface module FE or GE interface module j IPX packets Ethernet frames Interface slot A Route processor Switch processor Switch processor Switch processor Route processor Interface slot Interface slot Interface slot ATM router module Interface slot Power supply 1 Power supply 2 31333 Catalyst 8540 M SR Enhanced ATM Router M odule Features The Catalyst 8540 MSR enhanced ATM router module offers the following benefits Interoperates with all of the Layer 3 switching interface modules available for the Catalyst 8540 CSR chassis For more information on the Catalyst 8540 CSR Layer 3 interface modules refer to the ATM and Layer 3 Modul
6. IP multicast over RFC 1483 SVCs Access lists for ATM to ATM routing Half bridge devices Layer 2 ACLs ATM and Layer 3 Switch Router Softw are Configuration Guide 245 i caw Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Mil Catalyst 8540 MSR ATM Router M odule Softw are Restrictions The following software restrictions apply to the Catalyst 8540 MSR ATM router module Use tag switching functionality with caution Do not distribute routes learned through tag switching to FE or GE or vice versa Otherwise you might have unreachable route destinations The ATM router module does not initialize if it replaces an ATM port adapter or interface module when hierarchical VP tunnels are globally enabled Reboot the switch to initialize the ATM router module ATM Director does not support any PVC commands Only LANE clients or RFC 1483 not both can be configured on an ATM router module interface RFC 1483 on the ATM router module supports only AAL5 SNAP encapsulation Even though each ATM router module interface supports a maximum of 2048 VCs only 1400 to 1500 external VCs can be configured Internal VCs use up the rest IP multicast is only supported over 1483 LLC SNAP encapsulated PVCs You can have a maximum of 64 LECs per chassis Do not install an ATM router module in a slot pair where hierarchical VP tunnels are configured Slot pairs 0 and 1 2 and 3 9 and
7. OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Configuring IP Multicast To configure IP multicast over an RFC 1483 permanent virtual connection PVC on an ATM router module use the following commands beginning in global configuration mode Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 amp Command Configuring IP Multicast Hil Purpose Switch config ip multicast routing Enables IP multicast routing Switch config interface atm cardlsubcard port subinterface multipoint Switch config subif Creates the ATM router module point to multipoint subinterface and enters subinterface mode Note The ATM router module only supports point to multipoint subinterfaces Switch config subif map group name Enters the map group name associated with this PVC Switch config subif atm pve 2 vci a upe upc pd pd interface atm card subcard port vpt vpi b vci b upe upc encap aal5snap Configures the PVC Note The VPI number on the ATM router module interface must be 2 Switch config subif ip pim dense mode Enables Protocol Independent Multicast dense mode on the subinterface Switch config subif exit Switch config Returns to global configuration mode Switch config map list name Switch config map list Creates a map list by naming it and enters map list configuration mode Switch config map list i
8. Switch config interface atm Selects the Catalyst 8540 MSR enhanced ATM cardlsubcard port subinterface router module interface Switch config if Switch config if atm nsap address Specifies the NSAP ATM address of the interface nsap address or a Specifies the end system identifier address of the Switch config if atm esi address esi selector _ interface Switch config if ip address ip address mask Specifies the IP address of the interface Switch config if atm arp server time out Configures the ATM ARP server optional idle minutes timer Switch config if atm route addr prefix atm Configures a static route through the optional cardl subcard port internal ATM router module interface 1 This form of the atm arp server command indicates that this interface performs the ATM ARP server functions When you configure the ATM ARP client described earlier the atm arp server command is used with a different keyword and argument to identify a different ATM ARP server to the client 2 Address prefix is the first 19 bytes of the NSAP address The ESI address form is preferred in that it automatically handles the advertising of the address Use the NSAP form of the command when you need to define a full 20 byte unique address with a prefix unrelated to the network prefix on that interface You only need to specify a static route when configuring an ARP server using an NSAP address The idle timer in
9. address ip address mask Specifies the IP address of the interface Switch config if atm pve 2 vci interface atm Creates a PVC and enables ATM InARP 1 cardfsubcardlport vpi vci encap aal5mux Note The VPI number on the ATM router aal5snap inarp minutes be module interface must be 2 1 Only the Catalyst 8540 MSR enhanced ATM router module supports AALS MUX encapsulation Repeat these tasks for each PVC you want to create The inarp minutes interval specifies how often inverse ARP datagrams are sent on this virtual circuit The default value is 15 minutes Example The following example shows how to configure an IP over ATM interface on interface ATM 3 0 0 using a PVC with AALSSNAP encapsulation InARP set to ten minutes VPI 2 and VCI 100 Switch config interface atm 3 0 0 Switch config if ip address 11 11 11 11 255 255 255 0 Switch config if atm pvc 2 100 interface atm 0 0 0 50 100 encap aal5snap inarp 10 Configuring Classical IP over ATM in an SVC Environment This section describes how to configure classical IP over ATM in an SVC environment on your ATM router module It requires configuring only the device s own ATM address and that of a single ATM Address Resolution Protocol ARP server into each client device I OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Classical IP over ATM in
10. 10 and 11 and 12 use the same switching modules for scheduling For example do not install an ATM router module in slot 10 when hierarchical VP tunnels are configured on slot 9 For more information on hierarchical VP tunneling restrictions see Chapter 6 Configuring Virtual Connections Token Ring LANE is not supported The Catalyst 8540 MSR ATM router modules do not support the following features Tag edged router functionality Fast Simple Server Redundancy Protocol SSRP Bridging for multiplexing device encapsulation PIM IP multipoint signalling PIM NBMA PIM over ATM multipoint signalling Translation from IP QoS to ATM QoS RSVP to ATM SVC PVC management using ILMI Access lists for ATM to ATM routing Half bridge devices RFC 1483 MUX encapsulation IP multicast over RFC 1483 SVCs ACLs for IP and standard ACLs for IPX IP fragmentation IP 6 path load balancing I OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces HE Hardware and Software Restrictions of the ATM Router Module Catalyst 8540 MSR and LightStream 1010 ATM Router M odule Software Restrictions The following software restrictions apply to the Catalyst 8540 MSR enhanced ATM router module Use tag switching functionality with caution Do not distribute routes learned through tag switching to FE or GE or vice versa Otherwise you might have unreachable route destin
11. CHAPTER Configuring ATM Router M odule Interfaces This chapter describes steps required to configure the ATM router module on the Catalyst 8540 MSR Catalyst 8510 MSR and LightStream 1010 ATM switch routers and the enhanced ATM router module for the Catalyst 8540 MSR The ATM router module allows you to integrate Layer 3 switching with ATM switching on the same ATM switch router Note This chapter provides advanced configuration instructions for the Catalyst 8540 MSR Catalyst 8510 MSR and LightStream 1010 ATM switch routers For complete descriptions of the commands mentioned in this chapter refer to the ATM Switch Router Command Reference publication For hardware installation and cabling instructions refer to the ATM and Layer 3 Module Installation Guide Note The LightStream 1010 system software image does not include support for the ATM router module or Layer 3 features You can download the Catalyst 8510 MSR image to a LightStream 1010 ATM switch router with a multiservice ATM switch processor installed This chapter includes the following sections Overview of the ATM Router Module page 24 2 Hardware and Software Restrictions of the ATM Router Module page 24 5 Configuring ATM Router Module Interfaces page 24 9 Configuring LECs on ATM Router Module Interfaces Catalyst 8540 MSR page 24 11 Configuring Multiprotocol Encapsulation over ATM page 24 16 Configuring Classical IP over ATM in a PVC Environment pag
12. I bits 11 e MTU size 1500 bytes ATM interface side network ATM UNI type private Note Only Catalyst 8540 MSR enhanced ATM router module interfaces support IP unicast and IP multicast fragmentation For IP unicast fragmentation the packet must ingress on an enhanced ATM router module interface and egress on any interface For IP multicast fragmentation IP multicast data packets greater than 1500 bytes are fragmented to 1500 bytes on the ingress enhanced ATM router module interface before being switched to other members in the multicast group All the members in the multicast group must have an MTU equal to or greater than 1500 bytes Manual ATM Router Module Interface Configuration To manually change the default configuration values perform the following steps beginning in global Step 1 Step 2 Step 3 configuration mode Command Purpose Switch config interface atm card subcardl port Switch config if Specifies an ATM interface and enters interface configuration mode Switch config if atm maxvei bits max vci bits Modifies the maximum number of active VCI bits Switch config if mtu bytes Example Modifies the MTU size The default MTU size is 1500 bytes Note Only Catalyst 8540 MSR enhanced ATM router modules support variable MTU sizes The following example shows how to change the default number of active VCI bits Switch config interface atm 0 0 0 Switch conf
13. Softw are Configuration Guide Ex OL 1911 05
14. TM router module in the Catalyst 8540 MSR chassis refer to the Layer 3 Switching Software Feature and Configuration Guide which is available on the Documentation CD ROM that came with your ATM switch router online at Cisco com or when ordered separately as a hard copy document 2 Note ATM router modules have internal interfaces but no external ports Use the interface atm cardlsubcardlport command to specify these interfaces L Note Virtual path identifier VPI 2 is reserved for ATM router module interfaces which allows up to 2048 external VCs on each ATM router module interface Using VPI 0 would have allowed less than 1024 external VCs on an ATM router module interface because the ATM router module external VCs would have been forced to share the VC space within VPI 0 with the internal PVCs Even though each ATM router module interface supports a maximum of 2048 VCs only 1400 to 1500 external VCs can be configured Internal VCs use up the rest ATM and Layer 3 Switch Router Softw are Configuration Guide I OL 1911 05 24 9 Chapter 24 Configuring ATM Router Module Interfaces E Configuring ATM Router M odule Interfaces DefaultATM Router M odule Interface Configuration W ithout Autoc onfiguration If ILMI is disabled or if the connecting end node does not support ILMI the following defaults are assigned to all ATM router module interfaces ATM interface type UNI UNI version 3 0 e Maximum VC
15. The VCI in the atm pve command must match the atm ve VCI in the map list ATM and Layer 3 Switch Router Softw are Configuration Guide 24 18 cw Chapter 24 Configuring ATM Router Module Interfaces Configuring Classical IP over ATM ina PVC Environment W Ethernet Router RouterB configure terminal RouterB config ipx routing RouterB config interface fastethernet 2 0 RouterB config if ip address 20 1 1 1 255 255 255 0 RouterB config if ipx network 2011 RouterB config if end RouterB Configuring Classical IP over ATM ina PVC Environment Step 1 Step 2 Step 3 This section describes how to configure classical IP over ATM as described in RFC 1577 in a PVC environment on the ATM router module The ATM Inverse ARP InARP mechanism is applicable to networks that use permanent virtual connections PVCs where connections are established but the network addresses of the remote ends are not known For more information on configuring ATM ARP and ATM InARP see Chapter 12 Configuring IP over ATM For a description of classical IP over ATM and RFC 1577 refer to the Guide to ATM Technology In a PVC environment configure the ATM InARP mechanism on the ATM router module by performing the following steps beginning in global configuration mode Command Purpose Switch config interface atm card subcard port Specifies the ATM router module interface to Switch config if configure Switch config if ip
16. an SVC Environment For a detailed description of the role and operation of the ATM ARP server refer to the Guide to ATM Technology The ATM switch router can be configured as an ATM ARP client thereby being able to work with any ATM ARP server conforming to RFC 1577 Alternatively one of the ATM switch routers in a logical IP subnet LIS can be configured to act as the ATM ARP server itself In that case it automatically acts as a client as well The following sections describe configuring the ATM switch router in an SVC environment as either an ATM ARP client or an ATM ARP server Configuring as an ATM ARP Client In an SVC environment configure the ATM ARP mechanism on the interface by performing the following steps beginning in global configuration mode Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Command Purpose Switch config interface atm card subcardl port Switch config if Selects the ATM router module interface Switch config if atm nsap address nsap address or Switch config if atm esi address esi selector Specifies the network service access point NSAP ATM address of the interface or Specifies the end system identifier ESI address of the interface Switch config if ip address ip address mask Specifies the IP address of the interface Switch config if atm arp server nsap nsap address Specifies the ATM address of the ATM ARP server Switch config if
17. and emulated LANs configured on an interface or any of its subinterfaces show lane client interface atm cardlsubcard port subinterface name elan name brief Displays the global and per VCC LANE information for all LANE clients configured on any subinterface or emulated LAN show lane config interface atm card subcard port subinterface Displays the global and per VCC LANE information for the configuration server configured on any interface Configuring M ultiprotocol Encapsulation over ATM This section describes how to configure multiprotocol encapsulation over ATM as defined in RFC 1483 on the ATM router module The primary use of multiprotocol encapsulation over ATM also know as RFC 1483 is carrying multiple Layer 3 and bridged frames over ATM RFC 1483 traffic is routed through an ATM router module interface using static map lists Static map lists provide an alternative to using the ATM Address Resolution Protocol ARP and ATM Inverse ARP InARP mechanisms For more information on static map lists see Chapter 12 Configuring IP over ATM For a detailed description of multiprotocol encapsulation over ATM refer to the Guide to ATM Technology mm ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Configuring Multiprotocol Encapsulation over ATM W Note Step 1 Step 2 Step 3 Step 4 St
18. anslation from IP quality of service QoS to ATM QoS Resource Reservation Protocol RSVP to ATM SVC PVC management using ILMI Access lists for ATM to ATM routing Half bridge devices RFC 1483 MUX encapsulation IP multicast over RFC 1483 SVCs ACLs for IP and standard ACLs for IPX ATM and Layer 3 Switch Router Softw are Configuration Guide E caw Chapter 24 Configuring ATM Router M odule Interfaces Configuring ATM Router Module Interfaces Hi IP fragmentation IP 6 path load balancing Note The ATM router module is only supported on ATM switches which have a multiservice ATM switch processor installed 2 Note The LightStream 1010 system software image does not include support for the ATM router module or Layer 3 features You can download this image to a LightStream 1010 ATM switch router with a multiservice ATM switch processor installed Configuring ATM Router M odule Interfaces The you can configure the following features directly on the ATM router module interfaces Maximum virtual channel identifier VCT bits Maximum Transmission Units MTUs enhanced Catalyst 8540 MSR LANE clients Catalyst 8540 MSR RFC 1483 Classical IP over ATM RFC 1577 Bridging IP multicast Note This document describes how to configure ATM software features combined with Layer 3 features only For more detailed information on how to configure the Layer 3 modules that interoperate with the A
19. ations The ATM router module does not initialize if it replaces an ATM port adapter or interface module when hierarchical VP tunnels are globally enabled Reboot the switch to initialize the ATM router module ATM Director does not support any PVC commands RFC 1483 on the ATM router module supports only AAL5 SNAP encapsulation Even though each ATM router module interface supports a maximum of 2048 VCs only 1400 to 1500 external VCs can be configured Internal VCs use up the rest Do not install an ATM router module in a slot pair where hierarchical VP tunnels are configured Slot pair 0 and 1 and slot pair 3 and 4 use the same switching modules for scheduling For example do not install an ATM router module in slot 1 when hierarchical VP tunnels are configured on slot 0 For more information on hierarchical VP tunneling restrictions see Chapter 6 Configuring Virtual Connections RFC 1577 SVCs LANE clients are not supported Only UBR PVCs are supported IP multicast is only supported over 1483 LLC SNAP encapsulated PVCs The Catalyst 8510 MSR and LightStream 1010 ATM router modules do not support the following features Point to point subinterfaces Only point to multipoint subinterfaces are supported Tag edged router functionality SSRP Bridging for multiplexing device encapsulation Protocol Independent Multicast PIM IP multipoint signalling PIM nonbroadcast multiaccess NBMA PIM over ATM multipoint signalling Tr
20. components refer to Cisco IOS Switching Services Configuration Guide Virtual LANs LEC Configuration Examples The examples in this section show how to configure LANE clients LECs on networks with two routers and one Catalyst 8540 MSR For detailed information on configuring the LANE server LES LANE configuration server LECS and broadcast and unknown server BUS see Chapter 13 Configuring LAN Emulation A Caution For performance reasons avoid configuring the LANE server components on ATM switch routers Instead configure the LANE server components on a router such as a Cisco 7500 series router or a Catalyst 5500 router with a LANE module installed LANE Routing Over ATM The following example shows how to configure LANE routing over ATM using the ATM router module Figure 24 3 shows an example of a network for LANE routing over ATM Figure 24 3 Example Network for LANE Routing over ATM Catalyst 8540 MSR Router 1 SS Router 2 eS gt WE ME 3 3 ATM 30 O ATM router module Interface ATM 2 0 0 45158 ATM and Layer 3 Switch Router Softw are Configuration Guide 24 12 cone Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces Catalyst 8540 M SR Router 1 ATM Interface Routerl configure terminal Routerl config interface atm 2 0 Routerl config if ip address 1 0 0 1 255 0 0 0 Routerl config if atm pve 1 0 5 qsaal Routerl conf
21. e 24 19 Configuring Bridging page 24 24 Configuring IP Multicast page 24 27 About Rate Limiting page 24 27 Configuring Rate Limiting page 24 28 ATM and Layer 3 Switch Router Softw are Configuration Guide I OL 1911 05 mw 241 Chapter 24 Configuring ATM Router Module Interfaces HZ Overview of the ATM Router Module Overview of the ATM Router Module The ATM router module allows you to integrate Layer 3 routing and ATM switching within a single chassis When you install the ATM router module you no longer need to choose either Layer 3 or ATM technology as is frequently the case with enterprise campus and MAN applications The ATM router module can perform one or more of the functions described in Figure 24 1 Figure 24 1 ATM Router Module Routing and Bridging Functions ATM to ATM bridging ATM El ATM Subnet A Ea Subnet A ATM switch IP routing of ATM to or from ATM and Ethernet ATM i ATM Subnet B F Subnet A ATM switch ATM to ATM routing ATM ea ATM Subnet B Subnet A 31332 ATM switch The ATM router module receives Address Resolution Protocol ARP messages and route broadcasts from connected ATM peers and sends the appropriate control information to the route processor On the ATM side the ATM router module connects to the switching fabric as would any other interface module On the Catalyst 8540 MSR the ATM router module supports LANE clients LECs but not LANE servers LES LECS
22. e Installation Guide Provides an integrated high performance link between ATM and Layer 3 cards The ATM router module provides an aggregate switching capacity of 2 Gbps between ATM and Layer 3 ports 2 x 1 Gbps interfaces per module Data transfers to the switch core at the rate of 1 Gbps Simplifies management Hot swappable Occupies only one slot in the chassis Supports multiprotocol encapsulation over ATM RFC 1483 switched virtual connections SVCs soft permanent virtual circuits PVCs and permanent PVCs with either ATM adaptation layer 5 AALS Subnetwork Access Protocol SNAP or AALS MUX encapsulation Supports classical ATM over IP RFC 1577 SVCs and PVCs Standard and extended access control list ACL support for IP and standard ACL support for IPX For information configuring on IP ACLs see Chapter 11 Using Access Control and refer to the Configuring IP Services chapter in the Cisco IOS IP and IP Routing Configuration Guide For information configuring on IPX ACLs refer to the Configuring Novell IPX chapter in the Cisco IOS AppleTalk and Novell IPX Configuration Guide I OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces HZ Overview of the ATM Router Module IP fragmentation support IP 6 path load balancing support Supports OAM based PVC management Supports Bridge Group Virtual Interface BVI
23. e number broadcast Enables packet flooding on a PVC OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Bridging Example In the following example only PVC 2 200 is used for packet flooding Switch config interface atm 3 0 0 Switch config if no ip address Switch config if no ip directed broadcast Switch config if map group bg_1 Switch config if atm pve 2 200 interface atm 1 0 1 0 200 Switch config if atm pve 2 201 interface atm 1 0 1 0 300 Switch config if bridge group 5 Switch config if end Switch config map list bg_1 Switch config map list bridge atm vc 200 broadcast S Note For more information about bridging refer to the Layer 3 Software Configuration Guide Displaying the Bridging Configuration To display the bridging configuration on the ATM router module interface use the following privileged EXEC command Command Purpose show bridge verbose Displays the entries in the bridge forwarding database Example Switch show bridge verbose Total of 300 station blocks 297 free Codes P permanent S self BG Hash Address Action Interface VC Age RX count TX count 5 28 0 0000 0ce4 341c forward Fa0 0 0 5 2A 0 0000 0cac be94 forward ATM3 0 0 200 5 FA O 0060 3e59 c63c forward Fa0 0 0 ATM and Layer 3 Switch Router Softw are Configuration Guide ka
24. ep 5 Step 6 Step 7 Traffic shaping and policing are not supported on the ATM router module interfaces for traffic shaping and policing on ATM connections use VP tunnels For more information on VP tunnels see Chapter 6 Configuring Virtual Connections To configure multiprotocol encapsulation over ATM on the ATM router module interface use the following commands beginning in global configuration mode Command Purpose Switch config interface atm cardlsubcard port subinterface multipoint Switch config subif Creates the ATM router module point to multipoint subinterface and enters subinterface mode Note The ATM router module only supports point to multipoint subinterfaces Switch config subif ip address ip address mask Enters the IP address and subnet mask associated with this interface Switch config subif map group name Enters the map group name associated with this PVC Switch config subif atm pve 2 vci a upe upc pd pd rx cttr index tx cttr index interface atm card subcard port vpt vpi b vci b upc upc encap aal5mux aal5snap Configures the PVC Note The VPI number on the ATM router module interface must be 2 Switch config subif exit Switch config Returns to global configuration mode Switch config map list name Switch config map list Creates a map list by naming it and enters map list configuration mode Switch conf
25. g ATM Router Module Interfaces E Configuring LECs on ATM Route Router ATM S Switc Switc Switc Switc Switc Switc ATM S Switc Switc Switc Switc Switc r Module Interfaces Catalyst 8540 M SR 1ATM Interface Routerl configure terminal Routerl config interface atm 2 0 Routerl config if ip address 1 0 0 1 255 0 0 0 Routerl config if atm pvc 1 0 5 qsaal Routerl config if atm pvc 2 0 16 ilmi Routerl config if lane client ethernet happy Routerl config if end Routerl witch Router ATM Router Module Interface h configure terminal h config interface atm 2 0 0 h config if ip address 1 0 0 2 255 0 0 0 h config if lane client ethernet BACKBONE h config if end h witch Router Ethernet Interface h configure terminal h config interface gigabitethernet 9 0 0 h config if ip address 129 1 0 1 255 255 255 0 h config if no ip directed broadcast h config if end Switc h Router 2 Ethernet Interface Router2 configure terminal Router2 config interface gigabitethernet 9 0 0 Router2 config if ip address 129 1 0 2 255 255 255 0 Router2 config if no ip directed broadcast Router2 config if end Router2 Configure the desired network routing protocol such as RIP OSPF or EIGRP on Ethernet interfaces For more information on configuring networking protocols and routing refer to the Layer 3 Software Configuration Guide mi ATM and Layer 3 Swi
26. hernet processor interface microcode to verify conformity Non conforming traffic is dropped conforming traffic passes through without any changes Features Supported The following features are supported for rate limiting on the Catalyst 8500 switch router This feature is supported on the following interface modules Eight Port 10 100BASE T Fast Ethernet Interface Modules 16 Port 10 100BASE T Fast Ethernet Interface Modules Eight Port 1OOBASE FX Fast Ethernet Interface Modules 16 port 1OOBASE FX Fast Ethernet Interface Modules This feature can be applied on a per physical port basis This feature is available for input traffic and output traffic Restrictions Restrictions for rate limiting on the Catalyst 8500 switch router include the following This feature is not supported on the LightStream 1010 IPX and rate limiting cannot be configured at the same time If rate limiting is configured on an interface IPX will be automatically disabled on that interface In addition IPX will be automatically disabled on any of the three other interfaces which are controlled by the same hardware micro controller as the configured interface For example if rate limiting is configured on Fast Ethernet slot 0 IPX will not work on slots 0 1 2 and 3 The QoS mapping ratio might be disrupted by the rate limiting configuration Due to additional processing when rate limiting is enabled switching might not be at wire speed
27. ig if atm maxvci bits 10 mi ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces Catalyst 8540MSR W Configuring LECs on ATM Router M odule Interfaces Catalyst 8540 M SR The procedures for configuring LANE clients LECs on the ATM router module are the same as for the configuration of LECs on the route processor with one exception To specify an ATM router module interface rather than the route processor interface use the interface atm card subcard port command On the route processor you would use the interface atm 0 command To route traffic between an emulated LAN and a Fast Ethernet FE or Gigabit Ethernet GE interface you must configure the LEC on an ATM router module interface rather than a route processor interface Note 2 Step 1 Step 2 Step 3 An ATM router module interface can be configured for either LECs or RFC 1483 PVCs not both For both features to operate on the same ATM router module configure LECs on one interface and RFC 1483 PVCs on the other LANE clients are not supported on the Catalyst 8540 MSR enhanced ATM router module To configure a LEC on an ATM router module interface use the following commands beginning in global configuration mode Command Purpose Switch config interface atm Creates the ATM router module cardlsubcard por
28. ig if atm pve 2 0 16 ilmi Routerl config if lane client ethernet happy Routerl config if end Routerl ATM Switch Router ATM Router Module Interface Switch configure terminal Switch config interface atm 2 0 0 Switch config if ip address 1 0 0 2 255 0 0 0 Switch config if lane client ethernet BACKBONE Switch config if end Switch Router 2 ATM Interface Router2 configure terminal Router2 config interface atm 3 0 Router2 config if ip address 1 0 0 3 255 0 0 0 Router2 config if no ip mroute cache atm pvc 1 0 5 qsaal atm pve 2 0 16 ilmi Router2 config if no atm ilmi keepalive Router2 config if Router2 config if lane client ethernet BACKBONE end Router2 config if Router2 config if Router2 For detailed information on configuring LANE clients LECs see Chapter 13 Configuring LAN Emulation LANE Routing from ATM to Ethernet The following example shows how to configure LANE routing from ATM to Ethernet using the ATM router module Figure 24 4 shows an example of a LANE network for LANE routing from ATM to Ethernet Figure 24 4 Example Network for LANE Routing from ATM to Ethemet Catalyst 8540 MSR Router 1 a GE 9 0 0 W gt GE 9 0 0 SS 2 0 ATM router module Interface ATM 2 0 0 45222 I OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configurin
29. ig if bridge group 1 Switch config if exit Switch config bridge 1 protocol ieee Switch config end Switch ATM Switch Router Ethernet Interface Switch configure terminal Switch config interface gigabitethernet9 0 0 Switch config if bridge group 1 Switch config if end Switch ATM and Layer 3 Switch Router Softw are Configuration Guide I OL 1911 05 24 15 Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Multiprotocol Encapsulation over ATM Router 2 Ethernet Interface Router2 configure terminal Router2 config interface ethernet 9 0 0 Router2 config if bridge group 1 Router2 config if end Router2 Router 2 Bridge Interface Router2 configure terminal Router2 config interface BVI1 Router2 config if ip address 130 2 3 4 255 255 255 0 Router2 config if exit Router2 Router2 config bridge 1 route ip Router2 config bridge irb Router2 config end Router2 config bridge 1 protocol ieee For more information on configuring bridging refer to the Layer 3 Software Configuration Guide Confirming the LEC Configuration To confirm the LEC configuration on the ATM switch router use the following EXEC commands Command Purpose show lane interface atm cardlsubcard port subinterface name elan name brief Displays the global and per virtual channel connection LANE information for all the LANE components
30. ig map list ip ip address atm nsap address atm ve vci broadcast Associates a protocol and address with a specific virtual circuit 1 Only the Catalyst 8540 MSR enhanced ATM router module supports AALS MUX encapsulation Example The following example shows how to configure RFC 1483 on an ATM router module interface beginning in global configuration mode Switch config interface atm 1 0 0 1011 multipoint Switch config subif ip address 10 1 1 1 255 255 255 0 Switch config subif map group net1011 Switch config subif atm pve 2 1011 interface atm 3 0 0 0 1011 encap aal5snap Switch config subif exit Switch config map list ip 10 1 1 2 atm vc 1011 Switch config map list end Switch config map list net1011 Switch ATM and Layer 3 Switch Router Softw are Configuration Guide I OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Multiprotocol Encapsulation over ATM M ultiprotocol Encapsulation over ATM Configuration Example S Note The following example shows how to configure for multiprotocol encapsulation over ATM with two routers and a ATM switch router The ATM switch router has an ATM router module in slot 0 a Fast Ethernet interface module in slot 1 and an ATM interface module in slot 3 One router has an ATM interface processor in slot 3 The other router has a Fast Ethernet interface module in slot 2 Figure 24 6 sho
31. m 1 0 0 Client A config if atm nsap address 47 0091 8100 0000 1111 1111 1111 1111 1111 1111 00 Client A config if ip address 123 233 45 1 255 255 255 0 Client A config if atm arp server nsap 47 0091 8100 0000 1111 1111 1111 2222 2222 2222 00 Client A config if exit Client A config atm route 47 0091 8100 0000 1111 1111 1111 1111 1111 1111 atm 1 0 0 internal ESI Example The following example shows how to configure the ATM router module interface ATM 1 0 0 of Client A in Figure 24 7 using the ESI Client A config interface atm 1 0 0 Client A config if atm esi address 0041 0b0a 1081 40 Client A config if ip address 123 233 45 1 255 255 255 0 Client A config if atm arp server nsap 47 0091 8100 0000 1111 1111 1111 2222 2222 2222 00 Client A config if exit ATM and Layer 3 Switch Router Softw are Configuration Guide I oL 1911 05 24 21 Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Classical IP over ATM in an SVC Environment Configuring as an ATM ARP Server Step 1 Step 2 Step 3 Step 4 Step 5 3 0 Cisco s implementation of the ATM ARP server supports a single nonredundant server per LIS and one ATM ARP server per subinterface Thus a single ATM switch router can support multiple ARP servers by using multiple interfaces To configure the ATM ARP server perform the following steps beginning in global configuration mode Command Purpose
32. ng Bridging E config if atm pvc 2 200 interface atm 1 0 0 0 200 Typically a specific static map list configuration is not required for bridging to occur In case of packet flooding the bridging mechanism individually sends the packet to be flooded on all PVCs configured on the interface To restrict the broadcast of the packets to only a subset of the configured PVCs you must define a separate static map list Use the broadcast keyword in the static map command to restrict packet broadcasting Command Purpose Switch config interface atm card subcardl port Switch config if Specifies the interface to configure on the ATM router module Switch config if no ip address Disables IP processing Switch config if no ip directed broadcast Disables the translation of directed broadcasts to physical broadcasts Switch config if map group number Enters the map group name associated with this PVC Switch config if atm pve 2 vci A interface atm cardlsubcard port vpi B Configures a PVC Note The VPI number on the ATM router module interface must be 2 Switch config if bridge group number Assigns the interface to a bridge group Switch config if end Switch config Returns to global configuration mode Switch config map list name Switch config map list Creates a map list by naming it and enters map list configuration mode Switch config map list bridge atm v
33. o NSAP 36 0091810000000003D5607900 0003D5607900 00 connection up VPI 0 VCI 73 ATM2 0 0 ip 5 1 1 98 maps to s 36 0091810000000003D5607900 0003D5607900 00 broadcast connection up VPI 0 VCI 77 ATM2 0 0 Map list ip PERMANENT ip 5 1 1 99 maps to VPI 0 VCI 200 OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces WE Configuring Bridging Configuring Bridging All PVCs configured on ATM router module interfaces are used for bridging Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 To configure bridging on an ATM router module interface use the following commands beginning in global configuration mode Command Purpose Switch config interface atm card subcard port Switch config if Specifies the interface on the ATM router module to configure Switch config if atm pve 2 vci interface atm cardlsubcard port vpi Configures a PVC Note The VPI number on the ATM router module interface must be 2 Switch config if bridge group number Assigns the interface to a bridge group Switch config if end Switch config Returns to global configuration mode Switch config interface fastethernet card subcardI port Switch config if Specifies the Fast Ethernet interface to configure Switch config if no cdp enable Disables Cisco Discovery Protocol on the in
34. p ip address atm nsap address atm ve vci broadcast Associates a protocol and address with a specific virtual circuit Switch config map list end Returns to privileged EXEC mode Switch config map list net1011 Switch Example Switch config ip multicast routing Switch config interface atm 1 0 0 1011 multipoint Switch config subif ip address 10 1 1 1 255 255 255 0 Switch config subif map group net1011 Switch config subif atm pvc 2 1011 interface atm 3 0 0 0 1011 encap aal5snap Switch config subif ip pim dense mode Switch config subif exit h h Switc config map list ip 10 1 1 2 atm vce 1011 broadcast Note For more information on IP multicast refer to the Layer 3 Software Configuration Guide About Rate Limiting Rate limiting is available on the Catalyst 8540 MSR Catalyst 8510 MSR Catalyst 8540 CSR and Catalyst 8510 CSR This feature is similar to the IOS committed access rate CAR feature You can deploy rate limiting on your switch router to ensure that a packet or data source adheres to a stipulated contract and to determine the QoS for a packet OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces HI About Rate Limiting Rate limiting can be applied to individual interfaces When an interface is configured with this feature the traffic rate will be monitored by the Et
35. re Restrictions of the ATM Router M odule Hardware Restrictions The following hardware restrictions apply to the Catalyst 8540 MSR Catalyst 8510 MSR and LightStream 1010 ATM router modules and the Catalyst 8540 MSR enhanced ATM router modules You can install the ATM router module in any slot except a route processor slot and in the case of the Catalyst 8540 MSR a switch processor slot The ATM router module is only supported on LightStream 1010 ATM switches with multiservice ATM switch route processor with FC PFQ and the Catalyst 8510 MSR system software image e You can install up to two ATM router modules per chassis When you hot swap an ATM router module wait one minute after removing the module before inserting a new module amp Note The ATM router module is only supported on ATM switches which have multiservice ATM switch processor installed ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 LE Chapter 24 Configuring ATM Router Module Interfaces HE Hardware and Software Restrictions of the ATM Router Module Catalyst 8540 MSR Enhanced ATM Router Module Software Restrictions The following software restrictions apply to the Catalyst 8540 MSR enhanced ATM router module LANE is not supported LANE Clients are not supported Use tag switching functionality with caution Do not distribute routes learned through tag switching to Fast Ethernet FE or Gigabit Ethernet GE
36. rfaces to the switching fabric The Catalyst 8540 MSR enhanced ATM router module has two internal ports ATM and Layer 3 Switch Router Softw are Configuration Guide aaa OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Mil Catalyst 8510 MSR and LightStream 1010 ATM Router M odule Features The Catalyst 8510 MSR and LightStream 1010 ATM router module offers the following benefits Interoperates with all of the Layer 3 switching interface modules available for the Catalyst 8510 CSR chassis For more information on the Catalyst 8510 CSR Layer 3 interface modules refer to the ATM and Layer 3 Module Installation Guide Provides an integrated high performance link between ATM and Layer 3 cards The ATM router module provides a switching capacity of 1 Gbps between ATM and Layer 3 ports Data transfers to the switch core at the rate of 1 Gbps e Simplifies management Hot swappable e Occupies only one slot in the chassis Supports RFC 1483 SVCs and PVCs with AALS SNAP encapsulation Supports RFC 1577 SVCs and PVCs Supports OAM based PVC management Supports BVI e Supports IRB Supports VBR The ATM router module has no external interfaces All traffic is sent and received through internal interfaces to the switching fabric The Catalyst 8510 MSR and LightStream 1010 ATM router module has one internal port Hardware and Softwa
37. t subinterface multipoint point to multipoint subinterface and enters Switch config subif subinterface mode Note The ATM router module only supports point to multipoint subinterfaces Switch config subif ip address ip address mask Provides a protocol address and subnet mask for the client on this subinterface Switch config subif lane client ethernet Enables a LANE client for an emulated LAN elan name OL 1911 05 ATM and Layer 3 Switch Router Software Configuration Guide gy Chapter 24 Configuring ATM Router Module Interfaces WE Configuring LECs on ATM Router M odule Interfaces Catalyst 8540 M SR Example The following example shows how to configure two LECs on an ATM router module interface Switch configure terminal Switch config interface atm 1 0 0 4 multipoint Switch config subif ip address 40 0 0 1 255 0 0 0 Switch config subif lane client ethernet VLAN4 Switch config subif exit Switch config interface atm 1 0 0 5 multipoint Switch config subif ip address 50 0 0 1 255 0 0 0 Switch config subif lane client ethernet VLAN5 Switch config subif exit Switch config router ospf 1 Switch config router network 40 0 0 0 0 255 255 255 area 0 Switch config router network 50 0 0 0 0 255 255 255 area 0 For more information on configuring LECs on ATM router module interfaces see Chapter 13 Configuring LAN Emulation For a detailed description of LANE and its
38. tch Router Softw are Configuration Guide OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces Catalyst 8540MSR W LANE Bridging Between ATM and Ethernet The following example show how to configure LANE bridging between ATM and Ethernet using the ATM router module Figure 24 5 shows an example of a network for LANE bridging between ATM and Ethernet Figure 24 5 Example Network for LANE Bridging Between ATM and Ethemet Catalyst 8540 MSR Router 1 Si Router 2 ee GE 9 0 0 E gt Sa 2 0 GE 9 0 0 ATM router module Interface ATM 2 0 0 45222 Router 1 ATM Interface Routerl configure terminal Routerl config interface atm 2 0 config if atm pve 1 0 5 qsaal config if atm pve 2 0 16 ilmi c nfig if lane client ethernet happy Router1 Routerl config if bridge group 1 Router Router Router end Router config if Router 1 Bridge Interface Routerl configure terminal Routerl config interface BVI1 Router1 config if ip address 130 2 3 1 255 255 255 0 Router1 config if exit Routerl config bridge 1 protocol ieee Router1 config bridge 1 route ip Routerl config bridge irb Routerl config end Router ATM Switch Router ATM Router M odule Interface Switch configure terminal Switch config interface atm 2 0 0 Switch config if lane client ethernet BACKBONE Switch conf
39. terface Switch config if bridge group number Assigns the interface to a bridge group Switch config if end Switch config Returns to global configuration mode Switch config bridge number protocol ieee Specifies the IEEE 802 1D Spanning Tree Protocol for the bridge group Example The following example shows how to configure bridging on a Catalyst 8540 MSR with a Fast Ethernet interface module in slot 0 an ATM interface module in slot 1 and an ATM router module in slot 3 Figure 24 8 shows an example bridging network Figure 24 8 Example Network for Bridging ATM switch router Cisco 7500 router A lt gt Cisco 7500 router B S gt 10 10 10 2 IF atm 1 0 0 IF atm 0 MAC addr 0000 0CAC BE94 Eval IF fa 0 0 0 10 10 10 1 IF e 0 MAC addr 0060 3E59 C63C 38492 mi ATM and Layer 3 Switch Router Softw are Configuration Guide OL 1911 05 Chapter 24 Configuring ATM Router Module Interfaces Switch config interface atm 3 0 0 Switc Switc Switc config if bridge group 5 config if end Switc Switc config if no cdp enable config if bridge group 5 config if end config bridge 5 protocol ieee Switc Switc Configuring Packet Flooding on a PVC Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 h h h h Switch config interface fastethernet 0 0 0 h h h h Configuri
40. terval is the number of minutes a destination entry listed in the ATM ARP server s ARP table can be idle before the server takes any action to timeout the entry Example The following example configures the route processor interface ATM 0 as an ARP server shown in Figure 24 7 ARP_Server config interface atm 1 0 0 ARP_Server config if atm esi address 0041 0b0a 1081 00 ARP_Server config if atm arp server self ARP_Server config if ip address 123 233 45 2 255 255 255 0 ATM and Layer 3 Switch Router Softw are Configuration Guide 24 22 cw Chapter 24 Configuring ATM Router Module Interfaces Configuring Classical IP over ATM in an SVC Environment W Displaying the IP over ATM Interface Configuration To show the IP over ATM interface configuration use the following EXEC commands Command Purpose show atm arp server Shows the ATM interface ARP configuration show atm map Shows the ATM map list configuration Examples In the following example the show atm arp server command displays the configuration of the interface ATM 1 0 0 Switch show atm arp server Note that a next to an IP address indicates an active call IP Address TTL ATM Address ATM1 0 0 mae ORO 055 19 3241 4700918100567000000000112200410b0a108140 The following example displays the map list configuration of the static map and IP over ATM interfaces Switch show atm map Map list ATM1 0 0_ATM_ARP DYNAMIC arp maps t
41. ws an example of an RFC 1483 network Figure 24 6 Example Network for RFC 1483 ATM switch RFC 1483 router Ethernet router lt c 3 20 1 1 2 c 10 1 1 1 x IF fa 1 0 0 10 1 1 2 20 1 1 1 8 IF atm 3 0 1011 IF atm 3 0 0 1011 IF fa 2 0 8 Router with ATM Interface RouterA configure terminal RouterA config interface atm 3 0 1011 multipoint RouterA config subif ip address 10 1 1 2 255 255 255 0 RouterA config subif atm pve 1011 0 1011 aal5snap RouterA config subif map group net1011 RouterA config subif ipx network 1011 RouterA config subif exit RouterA config map list net1011 RouterA config map list ip 10 1 1 1 atm ve 1011 RouterA config map list ipx 1011 1111 1111 1111 atm ve 1011 RouterA config map list exit RouterA config ATM Switch Router Switch configure terminal Switch config interface atm 0 0 0 1011 multipoint Switch config subif ip address 10 1 1 1 255 255 255 0 Switch config subif ipx network 1011 Switch config subif map group net1011 Switch config subif atm pve 2 1011 interface atm 3 0 0 0 1011 Switch config subif map list net1011 Switch config map list ip 10 1 1 2 atm vc 1011 Switch config map list ipx 1011 2222 2222 2222 atm vc 1011 Switch config map list exit Switch config interface fastethernet 1 0 0 Switch config if ip address 20 1 1 2 255 255 255 0 Switch config if ipx network 2011 Switch config if end Switch
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