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SuperStack II Switch 3000 FX User Guide

1. SuperStack II Switch Port Traffic Statistics Port Traffic Statistics With the Port Statistics screen displayed select the de EN TRAFFIC STATISTICS button The Port Traffic Statistics re er Dctete moneat D screen is displayed as shown in Fi ure 6 3 Multicasts Received 8 Collisions 8 Broadcasts Received 8 Fragments 6 i i i hs F F ded 8 E 8 The Port Traffic Statistics screen shows the follow a Forwarded ee i H Ing Frame Size Analysis 64 Octets 8 256 to 511 Octets 8 65 to 127 Octets 8 512 to 1623 Octets 8 128 to 255 Octets 8 1824 to 1518 Octets 8 Port ID The ID of the port you are currently manag Ing CLEAR SCREEN COUNTERS Frames Received The number of valid frames received by the port including fragments and frames with errors Figure 6 3 Port Traffic Statistics screen Multicasts Received The number of frames suc Frames Transmitted The number of frames that have been successfully transmitted by the port including fragments and frames with errors Octets Received The number of octets received by the port The calculation includes the MAC header and Cyclical Redundancy Check CRC but excludes preamble Start of Frame Delimiter SFD Octet counters are accurate to the nearest 256 octet boundary Octets Transmitted The number of octets transmit ted by the port The calculation includes the MAC header and CRC but excludes preamble SFD Octet counters are accurate t
2. 77 servers 100Mbps link Figure 1 1 The Switch 3000 FX used as a data center switch 10Mbps link Network Configuration Examples 1 7 Switch 1000 Switch 3000 FX units fitted with Plug in Modules Server farm on 100TX connections 100Mbps link bps link Figure 1 2 Increasing port density with the Switch 3000 FX 1 8 CHAPTER 1 GETTING STARTED Unit Overview Front Plug in Module status LEDs Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx 1 2 3 4 5 Module F100BASE TX MDIX L TOR toMbs 8x mu SuperStack Il Switch 3000 5 x 100BASE FX ports Port status LEDs 100BASE TX Unit status LEDs port amp status LEDs Figure 1 3 Switch 3000 FX front view 100BASE FX Ports gt The Switch has five Fast Ethernet 100BASE FX ports which provide connection to Fast Ethernet devices such as the SuperStack Il Switch 1000 with a 100BASE FX Plug in Module Use 100BASE FX fiber optic cable with SC connectors to support switch ing over 62 5 125 micron The maximum distance supported is 412m 1352ft The maximum distance supported can be extended to 2km 6562ft with full duplex For more informa tion refer to Full Duplex on page 1 3 100BA
3. The ports use Port VLAN Mode which means that they are manually placed in the required VLAN This is the default mode m AutoSelect The ports use AutoSelect VLAN Mode which means that they are automatically placed in the required VLAN by referring to a VLAN Server database in 3Com s Transcend Enterprise Manager software For more information refer to Using AutoSelect VLAN Mode on page 5 4 SDB Ageing Time This field allows you to specify the ageing time hours minutes for all non perma nent entries in the Switch Database of the unit You can set an ageing time in the range O minutes to 277 hours with a default of 30 minutes If you enter 0 00 ageing is turned off For more informa tion about ageing times refer to Setting Up the Switch Database SDB on page 4 15 Spanning Tree Enable Disable This field allows you to enable or disable the Spanning Tree Protocol STP on the Switch For more information about STP refer to Spanning Tree Protocol on page 5 12 Duplex Mode Half Duplex Full Duplex on 100M Ports This field allows you to set the duplex mode for ports that have Unit Default specified in the Duplex Mode field of the Port Setup screen The default setting is Half Duplex For more information about Duplex Mode refer to Setting Up the Switch Ports on page 4 11 Oversize Frames Forward Discard This field allows you to specify whether the Switch forwards e
4. 4 Select the standby port from the Standby Links Available listbox or enter the port ID in the Standby Port ID field 5 Enable the pair in the Pair Enabled field Select APPLY 6 Connect the cabling for the standby port Deleting a Resilient Link Pair To delete the resilient link set up on the port select the DELETE button at the foot of the screen The Port Resilience screen closes and the Switch Man agement screen is displayed Viewing the Resilient Setup With the Switch Management screen displayed choose the management level Unit and select the RESILIENCE button The Unit Resilience Summary screen is displayed as shown in Figure 4 15 This screen shows the cur rent resilient link configuration for the unit and allows you to access the Port Resilience screen for resilient link pairs The following read only information is displayed MAIN Port This read only field displays the ID of the port configured as the main port for the resilient link pair STANDBY Port This read only field displays the ID of the port configured as the standby port for the resilient link pair Pair State Active Both Failed Unknown Not Available This read only field displays the current state of the resilient link pair m Active The resilient link pair is enabled and operating normally with both main and standby ports capable of carrying traffic m Both Failed Although the resilient link is cor rectly configured both li
5. a The cord set must be UL approved and CSA certified a The minimum specification for the flexible cord are No 18 AWG Type SV or SJ 3 conductor a The cord set must have a rated current capac ity of at least 10A a The attachment plug must be an earth grounding type with a NEMA 5 15P 15A 125V or NEMA 6 15P 15A 250V con figuration For Denmark a The supply plug must comply with section 107 2 D1 standard sheet DK2 1a or DK2 5a For Switzerland a The supply plug must comply with SEV ASE 1011 APPENDIX A SAFETY INFORMATION It is essential that the mains socket outlet is installed near to the unit and is accessible You can only disconnect the unit by removing the appliance coupler from the unit If the power supply plug is unsuitable and you have to replace it you may find other codings for the respective connections Connect the power supply wires from the unit according to the fol lowing scheme Brown wire to the Live Line plug terminal which may be marked with the letter L or colored red Blue wire to the Neutral plug terminal which may be marked with the letter N or colored black Yellow green wire to the Earth Ground plug ter minal which may be marked with the letter E or the earth symbol or colored green yellow This unit operates under SELV conditions Safety Extra Low Voltage according to IEC 950 the conditions of which are maintained only if the equipment to which it is connec
6. Choose the SERVER button The VLAN Server screen is displayed as shown in Figure 5 7 The screen shows the following VLAN Server IP Address Enter the IP address of your VLAN Server in this field Backup VLAN Server IP Address This field allows you to enter the IP address of a backup VLAN Server A backup VLAN Server can be used to supply VLAN allocations when the Switch cannot access the main VLAN Server SuperStack II Switch ULAN SERVER ULAN Server IP Address 9 8 8 Backup VLAN Server IP Address 6 6 6 6 ULAN Server Community String public Throttle msec 58 1 Poll Period sec 688 OK ICANCEL Figure 5 7 VLAN Server screen VLAN Server Community String This field allows you to enter a community string for the VLAN Server s The default community string is public Throttle 0 99999 This field allows you to specify the time delay in milliseconds between the trans mission of VLAN allocation requests to the Server The time delay is used to avoid placing an excessive workload on the VLAN Server The default setting for this field is 50 milliseconds Poll Period This read only field shows the time interval in seconds between successive polls of the VLAN Server The Switch polls the VLAN Server once every poll period to check for any changes Specifying AutoSelect VLAN Mode To specify that the Switch uses AutoSelect VLAN Mode refer to Setting Up the Switch Unit on page 4 9
7. O minute intervals 96 historical samples 6 S m 30 second intervals 120 historical samples S 3 stored Although up to 700 alarms can be defined for the Switch a new or initialized Switch has four alarms defined for each port m Bandwidth used m Broadcast bandwidth used m Percentage of packets forwarded m Errors per 10 000 packets You can modify these alarms using an RMON management application but you cannot create or delete them For more information about the alarms setup on the Switch refer to About Alarm Actions on page 5 27 and About Default Alarm Settings on page 5 28 5 26 CHAPTER 5 ADVANCED MANAGEMENT Table 5 2 RMON support supplied by the Switch RMON Group Support supplied by the Switch Hosts Hosts Top N Matrix Filter Capture Events Although Hosts is supported by the Switch there are no Hosts sessions defined on a new or initialized Switch by default You can specify that a Hosts session is defined on the Default VLAN for more information refer to Setting Up the Switch Unit on page 4 9 Although Hosts Top N is supported by the Switch there are no Hosts Top N sessions defined on a new or initialized Switch Although Matrix is supported by the Switch there are no Matrix sessions defined on a new or initialized Switch by default You can specify that a Matrix session is defined on the Default VLAN for more information refer o Setting U
8. To specify that a port on the Switch uses AutoSe lect VLAN Mode refer to Setting Up the Switch Ports on page 4 11 Virtual LANs VLANs 5 11 CHAPTER 5 ADVANCED MANAGEMENT Spanning Tree Protocol gt Using the Spanning Tree Protocol STP functionality of your Switch makes your network more fault toler ant The following sections explain more about STP and the STP features supported by the Switch STP is not currently supported over an Asynchronous Transfer Mode ATM network Therefore if you have an ATM OC 3c Module installed in your Switch it does not join the STP system What is STP gt STP is a part of the 802 1d bridge specification defined by the IEEE Computer Society To explain STP more effectively the Switch 3000 FX will be defined as a bridge STP is a bridge based system for providing fault tol erance on networks STP allows you to implement parallel paths for network traffic and ensure that m Redundant paths are disabled when the main paths are operational m Redundant paths are enabled if the main paths fail As an example Figure 5 8 shows a network contain ing three LAN segments separated by three bridges With this configuration each segment can commu nicate with the others using two paths This config uration creates loops which cause the network to overload however STP allows you to have this con figuration because it detects duplicate paths and im
9. tion by an internetworking device full duplex A system which allows frames to be transmitted and received simultaneously and in effect doubles the potential throughput of a link IFM Intelligent Flow Management A means of holding packets back at the transmit port of the connected endstation Prevents packet loss at a congested switch port IPX Internetwork Packet Exchange A protocol allowing communication in a NetWare network IP address Internet Protocol address A unique identifier for a device attached to a network using TCP IP The address is written as four octets separated with full stops periods and is made up of a network section an optional subnet section and a host sec tion LAN Local Area Network A network of connected com puting resources such as PCs printers servers cov ering a relatively small geographic area usually not larger than a floor or building Characterized by high data rates and low error rates latency The delay between the time a device receives a frame and the time the frame is forwarded out of the destination port line speed See baud rate main port The port in a resilient link that carries data traffic in normal operating conditions MDI MDIX Medium Dependent Interface A type of Ethernet twisted pair port connection MDI ports connect to MDIX cross over ports using straight through twisted pair cabling MDI to MDI and MDIX to MDIX links use cross over
10. 3 Fwd Transitions field 5 21 K keyboard shortcuts 3 5 H Hardware Version field 6 8 Hello BPDUs 5 15 Hello Time 5 14 Hello Time field 5 18 History RMON group 5 22 5 25 Hold Time field 5 19 Hosts RMON group 5 23 5 26 Hosts and Matrix RMON sessions 4 10 Hosts Top N RMON group 5 23 5 26 L Last Reset Type field 6 8 Learning state transitions from 5 21 LEDs 1 9 line speed 4 25 Link State field 4 11 4 19 Local Security screen 4 6 logging off 3 12 logging on 3 7 Logon screen 3 7 Lost Links field 4 11 IFM See Intelligent Flow Management Initialization screen 4 27 initializing the Switch 4 27 installing the Switch 2 4 Intelligent Flow Management 1 3 Intelligent Flow Management field 4 11 Interactive Access disabling 4 12 IP address backup VLAN server 5 10 default router 3 10 entering 1 13 format 3 2 Switch 3 10 VLAN server 5 10 IP or IPX Address field 4 23 IP protocol 1 12 IPX address 1 13 IPX Network field 3 10 IPX protocol 1 12 M MAC Address field 3 9 4 16 MAC address label 1 11 Main Banner screen 3 6 Main Menu screen 3 8 MAIN Port field 4 21 Main Port ID field 4 19 management agent version number 6 8 Management Level field 4 7 Management Setup screen 3 9 Matrix RMON group 5 23 5 26 Max Age 5 15 Max Age field 5 18 Media Type field 4 11 4 19 N network supplier support F 3 New Password field 4 5 Node field 3 10 non ageing entries 4 15 non routa
11. 3ComForum on CompuServe online service World Wide Web Site Access the latest networking information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3Com com This service features news and information about 3Com products customer service and support 3Com Corporation s latest news releases NetAge Magazine technical documentation and more 3Com Bulletin Board Service 3ComBBS contains patches software and drivers for all 3Com products as well as technical articles This service is available via modem or ISDN 24 hours a day 7 days a week Access by Analog Modem To reach the service by modem set your modem to 8 data bits no parity and 1 stop bit Call the telephone number nearest you Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy fee required up to 14400 bps 39 2 27300680 Japan up to 14400 bps 81 3 3345 7266 Mexico up to 28800 bps 52 5 520 7853 P R of China up to 14400 bps 86 10 684 92351 Singapore up to 14400 bps 65 534 5693 F 2 APPENDIX F TECHNICAL SUPPORT Country Data Rate Telephone Number Telephone Telephone Taiwan up to 14400 bps 886 2 377 5840 Country Number Country Number UK up to 28800 bps 44 1442 438278 Australia 1 800 123853 Neth
12. Data and Computer Software Clause at 48 C F R 52 227 7013 3Com Ireland do 3Com Limited 3Com Centre Boundary Way Hemel Hempstead Herts HP2 7YU United Kingdom For civilian agencies Restricted Rights Legend Use reproduction or disclosure is subject to restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com Corporation s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States If there is any software on removable media described in this documentation it is furnished under a license agreement included with the product as a separate document in the hard copy documentation or on the removable media in a directory file named LICENSE TXT If you are unable to locate a copy please contact 3Com and a copy will be provided to you Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com NetAge SuperStack and Transcend are registered trademarks of 3Com Corporation 3ComFacts is a service mark of 3Com Corporation Other brand and product names may be registered trademarks or trademarks of their respective holders Environmental Statement It is 3Com s policy to be environmentally friendly in all its operations This manual is printed on paper that come
13. Fud Transitions 2 Refer to the User Guide before changing the settings of these parameters Port Enable Enable Priority 128 Path Cost 708 Fast Start Disablet oK Figure 5 15 Port STP screen m Learning A port in this state is preparing to forward packets but has temporarily blocked to prevent a loop During the Learning state the Switch learns the addresses of all error free pack ets The port is included in STP calculations and BPDUs can be transmitted received and pro cessed a Forwarding A port in this state can forward packets BPDUs can also be received and pro cessed Designated Port This read only field shows the ID of the Designated Bridge Port for the current port s segment Designated Root This read only field shows the Bridge Identifier of the Root Bridge Designated Cost This read only field shows the path cost from the Root Bridge to the Designated Bridge Port for the current port s segment Designated Bridge This read only field shows the Bridge Identifier of the Designated Bridge for the current port s segment Fwd Transitions This read only field shows the number of times that the current port has transi tioned from the Learning state to the Forwarding state Port Enable Enable Disable This field allows you to enable or disable the current port Priority 0 255 This field allows you to specify the priority of the port By changing the priority of th
14. Module See Plug in Module DSR Control field 4 24 Duplex Mode field 4 10 4 12 E Edit User screen 4 5 Ethernet address label 1 11 Events RMON group 5 24 5 26 F Falling Action field 4 14 Falling Threshold field 4 13 Fast Boot tests 3 9 Fast Ethernet configuration rules 2 2 Fast Start field 5 21 Fault Log screen 6 9 Fault Log interpreting 6 9 Fault Number field 6 9 fax service See 3ComFacts fields Access Level 4 3 Active Port 4 20 4 21 Auto Config 4 24 Backup VLAN Server IP Address 5 10 Boot Software Version 6 8 BOOTP Select 3 10 Bridge Forward Delay 5 19 Bridge Hello Time 5 19 Bridge Max Age 5 19 Bridge Priority 5 19 Broadcast Storm Control 4 13 Char Size 4 25 Community String 4 3 4 5 4 23 Community SNMP 4 6 Connection Type 4 24 Console Port 4 6 Data Link Protocol 3 10 Database Entries 4 16 DCD Control 4 24 Default RMON Host Matrix 4 10 Default Router 3 10 Designated Bridge 5 21 Designated Cost 5 21 Designated Port 5 20 Designated Root 5 18 5 20 Destination 4 28 Device IP Address 3 10 Device SubNet Mask 3 10 Disable Interactive Access 4 12 DSR Control 4 24 Duplex Mode 4 10 4 12 Falling Action 4 14 Falling Threshold 4 13 Fast Start 5 21 Fault Number 6 9 File Name 4 28 Flow Control 4 24 Forward Delay 5 19 Fwd Transitions 5 21 Hardware Version 6 8 Hello Time 5 18 Hold Time 5 19 Intelligent Flow Management 4 11 IP or IPX Address 4 23 IPX Network 3 10 Last Reset Type 6 8 Link St
15. OR CONDITIONS EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES TERMS OR CONDITIONS OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND SATISFACTORY QUALITY 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE OR USE OF ITS PRODUCTS 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER S OR ANY THIRD PERSON S MISUSE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHORIZED ATTEMPTS TO REPAIR OR MODIFY OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE OR BY ACCIDENT FIRE LIGHTNING OR OTHER HAZARD LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE OR PROFITS LOSS OF BUSINESS LOSS OF INFORMATION OR DATA OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND LIMITS ITS LIABILITY TO REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRIC
16. The value shown should be a very small proportion of the total data traffic IFM Count The number of times Intelligent Flow Management IFM has had to operate to minimize packet loss Frame Size Analysis The number of frames of a specified length as a percentage of the total number of frames of between 64 and 1518 octets This indi cates the composition of frames in the network Port Traffic Statistics 6 5 The frame size ranges are m 64 octets m 65 127 octets m 128 255 octets m 256 511 octets m 512 1023 octets m 1024 1518 octets The composition of frames on your network may help you to analyze the efficiency of your network layer protocol CLEAR SCREEN COUNTERS Select this button to set all counters shown on the screen to zero It is useful for trend analysis if you wish to see changes in counters over a short period of time This button does not clear the counters on the device or affect counters at the network management workstation CHAPTER 6 STATUS MONITORING AND STATISTICS Port Error Analysis With the Port Statistics screen displayed select the ERROR ANALYSIS button The Port Error Analysis screen is displayed as shown in Figure 6 4 The Port Error Analysis screen shows the following Port ID The ID of the port you are currently manag ing CRC Align Errors This counter is incremented by one for each frame with a CRC Cyclical Redun dancy Check error or an alignment error A CRC occurs if
17. This allows you to set up access levels for users on the Switch MAIN MENU m CREATE USER screen This allows you to create up to 10 users in addition to the default users set up on the Switch Figure 4 2 User Access Levels menu m DELETE USERS screen This allows you to delete users from the Switch The default users cannot be deleted m EDIT USER screen This allows you to change your own password and community string You cannot change details for other users Creating a New User These steps assume the User Access Levels screen is displayed Select the CREATE USER option The Create User screen is displayed as shown in Figure 4 3 Fill in the fields and assign an access level for the new user When the form is complete select OK The Create User screen shows the following fields User Name Type in the name of this new user The name can consist of up to 10 characters and is case sensitive Password Type in the password for this new user The password can consist of up to 10 characters and is case sensitive For security reasons the pass word is not displayed on screen Access Level Assign an access level for this new user as follows monitor access to view but not change a subset of the manageable parameters of the Switch m secure monitor as monitor m manager access to all the manageable param eters of the Switch except security features m specialist
18. access the device Check that the device s IP address subnet mask and default router are correctly configured and that the device has been reset Check that the device s IP address is correctly recorded by the SNMP Network Manager refer to the user documentation for the Network Manager The Telnet workstation cannot access the device Check the device s IP address subnet mask and default router are correctly configured and that the device has been reset Ensure that you enter the IP address of the Switch correctly when invoking the Telnet facility Traps are not received by the SNMP Network Manager Check that the SNMP Network Manager s IP address and the community string are correctly configured The SNMP Network Manager or Telnet worksta tion can no longer access the device Check that Remote Telnet access or Commu nity SNMP access is enabled Check that the port through which you are trying to access the device has not been disabled refer to Setting Up the Switch Ports on page 4 11 If it is enabled check the connections and network cabling at the port Check that the port through which you are trying to access the device is in VLAN 1 the Default VLAN Refer to Setting Up VLANs on the Switch on page Using the Switch C 3 8 Try accessing the device through a different port If you can now access the device a problem with the original port is indicated Re examine the connec tions
19. and cabling There may be a network problem preventing you accessing the device over the network Try access ing the device through the console port You forget your password and cannot log in If you are not one of the default users monitor manager security or admin another user having security access level can log in delete your user name and create a new user name for you with a new password Alternatively another user having security access level can log in and initialize the device This will return all configuration information including pass words to the initial values In the case where no one knows a password for a security level user contact your supplier Using the Switch You see network problems and the Packet LED is on continuously with constant collisions refer to Port Traffic Statistics on page 6 4 You are using PACE equipped devices and have the Interactive Access feature of PACE enabled at both ends of the link Interactive Access must only be enabled at one end of the Switch device link Dis abling Interactive Access for a Switch port is described in Setting Up the Switch Ports on page 4 11 You have configured a Switch port so that it blips when a broadcast storm occurs but the port does not blip properly The broadcast storms are occurring such that the average broadcast bandwidth cannot drop below the Falling Threshold value This means that the blip only o
20. as manager m security access to all manageable parameters of the Switch Creating a New User 4 3 SuperStack II Switch Create User User Name Password 1 Access Level Monitor Community String 1 OK CANCEL Figure 4 3 Create User screen Community String By default a community string identical to the user name is generated You can change this to any text string of 32 characters or less The community string is only needed for SNMP access If you are using a remote SNMP Network Manager the community string specified in the Net work Manager s database must be the same as that for the device gt If you enter a community string that is greater than 32 characters it is truncated to 32 characters 4 4 CHAPTER 4 MANAGING THE SWITCH 3000 FX Deleting a User SuperStack II Switch Delete Users These steps assume the User Access Levels screen is User List displayed monitor manager 1 Select the DELETE USERS option The Delete Users admin screen is displayed as shown in Figure 4 4 genan 2 Use the spacebar to highlight the user that you want to delete Note that you cannot delete default users or the current user that is yourself 3 Select DELETE USERS DELETE USERS Figure 4 4 Delete Users screen Editing User Details 4 5 Editing User Details SuperStack II Switch Edit User These steps assume the User Access Levels screen is a an 1
21. avoid this situation we recommend that you Switch B connect the two SuperStack II Switch units using a moon Z Virtual LAN Trunk VLT For more information m about VLTs refer to Connecting Common VLANs Between Switch Units on page 5 3 Figure C 1 Network configuration that results in loss of contact C 6 APPENDIX C TROUBLE SHOOTING D PIN OUTS Null Modem Cable PC AT Serial Cable 9 pin to RS 232 25 pin 9 pin to 9 pin Switch 3000 FX PC Terminal Switch 3000 FX PC AT Serial Port Cable connector 9 pin female Cable connector 25 pin male female Cable connector 9 pin female Cable connector 9 pin female Screen Shell Screen enyreauiredifscreen Screen Shell Shell Screen omiyrequiredifscreen TxD 3 3 RxD DTR 4 o DCD RxD 2 e e 2 TxD always required TxD 3 e 2 RxD always required Ground 5 7 Ground RxD 2 3 TxD RTS 7 e 4 RTS 7 CTS 8 e 4 DTR CTS 8 20 DTR Ground 5 e e 5 Ground DSR 6 e 5 CTS ne DSR 6 e 6 DSR PEE DCD 1 eq 6 DSR RTS 7 7 RTS DTR 4 e L 8 DCD DCD 1 e 8 CTS D 2 APPENDIX D PIN OUTS Modem Cable 9 pin to RS 232 25 pin Switch 300
22. displayed New Password Confirn Password 1 Select the EDIT USER option The Edit User screen is BOMMNLENSSEH NGE Leecur sty 1 displayed as shown in Figure 4 5 2 Fill in the fields as required 3 When you have completed the changes select OK ok The Edit User screen shows the following fields User Name This read only field shows the name of the user This field cannot be changed if you need to change the user name you must delete this user and create a new one Figure 4 5 Edit User screen Old Password To change the user s password you need to enter the current password in this field New Password This field allows you to enter a new password for the user Confirm Password Re enter the new password into this field Community String This field allows you to enter a community string for the user gt If you forget your password while logged out of the Switch VT100 interface contact your local tech nical support representative who will advise on your next course of action 4 6 CHAPTER 4 MANAGING THE SWITCH 3000 FX Assigning Local Security The Local Security screen shows a matrix of options for access method Console Port Remote Telnet Community SNMP and access level These steps assume the User Access Levels screen is displayed 1 Select the LOCAL SECURITY option The Local Secu rity screen is displayed as shown in Figure 4 6 2 Fill in the fields as required
23. face type Bold text denotes key features Table 2 Notice Icons Icon Notice Type Alerts you to Information note T Caution h Warning Important features or instructions Risk of personal injury system damage or loss of data Risk of severe personal injury Related Documentation The Switch 3000 FX document set includes m SuperStack Il Switch 3000 FX Quick Reference Guide Document Number DQA1694 0AAA0x m SuperStack Il Switch 3000 FX Quick Installation Guide Document Number DIA1694 OAAA0x m SuperStack Il Switch 3000 FX Release Notes Document Number DNA1694 OAAAOx Other publications you may find useful m Documentation accompanying the Plug in Modules m Documentation accompanying the Redundant Power System GETTING STARTED About the Switch 3000 FX Switching is currently a leading option for increasing performance by providing high speed backbone links and eliminating server bottlenecks Part of the 3Com SuperStack Il range of products the Switch 3000 FX provides simple low cost and high perfor mance switched connections to Fast Ethernet net works gt The SuperStack Il Switch 3000 FX is a revision of the LinkSwitch 3000 Summary of Features The Switch 3000 FX has the following features Five 100BASE FX ports and one 100BASE TX port Plug in Module slot Asynchronous Transfer Mode ATM and Fast Ethernet Transceiver Module slot 10Mbps Ethernet Support f
24. of trend analysis The group is useful for analysis of traffic patterns and trends on a LAN segment or VLAN and to establish baseline information indicating normal operating parameters Alarms The Alarms group provides a versatile general mechanism for setting thresholds and sampling intervals to generate events on any RMON variable Both rising and falling thresholds are supported and thresholds can be on the absolute value of a vari able or its delta value In addition alarm thresholds may be autocalibrated or set manually Alarms are used to inform you of a network perfor mance problem and they can trigger automated action responses through the Events group Hosts The Hosts group specifies a table of traffic and error statistics for each host on a LAN segment or VLAN Statistics include packets sent and received octets sent and received as well as broadcasts mul ticasts and error packets sent The group supplies a simple discovery mechanism listing all hosts that have transmitted The next group Hosts Top N requires implementation of the Hosts group Hosts Top N The Hosts Top N group extends the Hosts table by providing sorted host statistics such as the top 20 nodes sending packets or an ordered list of all nodes according to the errors they sent over the last 24 hours Matrix The Matrix group shows the amount of traffic and number of errors between pairs of devices on a LAN segment or VLAN Fo
25. port identifier for this device Select whether the entry is permanent or not by specifying Yes or No in the Permanent field Select INSERT Deleting an Entry from the SDB 1 In the listbox highlight the entry you want to delete and press Return or type the MAC address into the MAC Address field 2 Select DELETE Specifying that an Entry is Permanent 1 In the listbox highlight the entry you want to make permanent and press Return or type the MAC address into the MAC Address field In the Permanent field specify Yes Select INSERT CHAPTER 4 MANAGING THE SWITCH 3000 FX Setting Up Resilient Links You can configure a Switch to provide resilient links to another device so that network disruption is mini mized if a link fails A resilient link pair consists of a main link and a standby link You define a resilient link pair by specifying the main port and standby port at one end of the pair Switch Main port Standby port Resilent link pair Other device Figure 4 13 Resilient link pair Under normal network operating conditions the main link carries your data The Receive Idle signal of a fiber link or the Test Pulse on an Ethernet twisted pair link is continually monitored by the Switch If a signal loss is detected the Switch imme diately enables the standby port so that it carries the data In addition the main port is disabled If a main link has a higher bandwidth than i
26. product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to 3Com for repair whether under warranty or not SOFTWARE 3Com warrants that the software programs licensed from it will perform in substantial conformance to the program specifications therefor for a period of ninety 90 days from the date of purchase from 3Com or its Authorized Reseller 3Com warrants the media containing software against failure during the warranty period No updates are provided 3Com s sole obligation with respect to this express warranty shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any defective media with software which substantially conforms to 3Com s applicable published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials 3Com makes no warranty or representation that its software products will work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in
27. recognized You may need to download a version of the Switch s management agent software that recognizes the Module refer to Upgrading Software on page 4 28 or remove the Module Contact your supplier for further advice A link is connected and yet the Status LED does not light Check that m All connections are secure m Cables are free from damage m The devices at both ends of the link are pow ered up m The connection uses cross over cable if you are linking a 10BASE T or 100BASE TX port with a device which is MDIX only APPENDIX C TROUBLE SHOOTING Using the VT100 Interface The initial Main Banner screen does not dis play Check that your terminal or terminal emulator is correctly configured to operate as a VT100 terminal For console port access you may need to press Return several times before the Main Banner appears Check the settings on your terminal or terminal emulator The management facility s auto configura tion works only with baud rates from 1200 to 19 200 Screens are incorrectly displayed Check that your terminal or terminal emulator is correctly configured to operate as a VT100 terminal Check the settings on your terminal or terminal emulator The management facility s autoconfigura tion works only with baud rates from 1200 to 19 200 Check that you are using a suitable font for exam ple in HyperTerminal use the MS Line Draw font The SNMP Network Manager cannot
28. screens for the level of management you have chosen port unit or VLAN For information about the Port Setup and Unit Setup screens refer to Setting Up the Switch Ports and Setting Up the Switch Unit in this chapter For information about the VLAN Setup screen refer to Setting Up VLANs on the Switch on page 5 8 Setting Up the Switch Unit With the Switch Management screen displayed choose the management level Unit then select the SETUP button The Unit Setup screen is displayed as shown in Figure 4 10 The screen shows the following Unit Name This read only field shows the type of device sysName This field takes its name from the MIB II System Group object You can edit the first 30 char acters of this field to make the name more mean ingful This name is displayed on the Main Banner when you first access the VT100 screens and is also accessible to an SNMP Network Manager PACE Enable Disable This field allows you to enable or disable PACE Priority Access Control Enabled for all ports on the Switch PACE allows multimedia traffic to be carried over standard Ether net and Fast Ethernet LANs by providing two fea tures a Implicit Class of Service When multimedia traf fic is transmitted it is given a higher priority than other data and is therefore forwarded ahead of other data when it arrives at the Switch The Implicit Class of Service feature minimizes latency through the Swit
29. seule ment si le mat riel auquel elle est branch e est aussi en exploitation sous SELV L unit ne devrait pas tre branch e une prise de courant C A source de courant sous aucun pr texte sans un branchement mis la terre mis la masse Pour conformer aux normes de s curit europ ennes un fusible de rechange ne doit pas tre ajust l admission d appareil Seulement les fusibles du m me fabricant construit et type doivent tre utilis s avec l unit m Assurer que l entr e de la source d alimentation soit d branch e avant d ouvrir le couvercle de fusible du connecteur IEC ou d enlever le couver cle de l unit m Seulement Pour La France et Le P rou a Cette unit ne peut pas tre mise en marche des sources de courant IT Imp dance la terre Si vos sources de courant sont de type IT cette unit doit tre aliment e par 230V 2P T via un rapport de transformation d iso lation de 1 1 avec un point de connexion sec ondaire tiquet Neutre branch directement a la Terre a la Masse m Ne pas enlever le Module Plug in ou la plaque d occultation de module d metteur r cepteur avec la puissance encore branch e L information de S curit Importante A 5 La Source de Courant et Le Fusible L unit s ajuste automatiquement la tension d ali mentation Le fusible est convenable aux deux op rations 110 V C A et 220 240 V C A AVERTISSEMENT Assurer que l alimen
30. the Switch is known as the V7700 or local manage m Via a Network Connection The local man ment interface The VT100 management interface agement facility is also accessible via Telnet over a gives a forms based structure with pre defined secu network running the TCP IP protocol The man rity levels enabling access to be restricted to partic agement available through Telnet is exactly the ular users same as that of a locally connected terminal The Telnet application requires a VT100 terminal or PC with VT100 emulation software 3 2 CHAPTER 3 SETTING UP FOR MANAGEMENT Using Telnet Any Telnet facility that emulates a VT100 terminal should be able to communicate with the Switch over a TCP IP network Up to three active Telnet ses sions can access the Switch concurrently If a con nection to a Telnet session is lost inadvertently the connection is closed by the Switch after 2 3 min utes of inactivity Before you can start a Telnet session you must set up the IP parameters described in Switch Manage ment Setup on page 3 9 To open the Telnet session you must specify the IP address of the device that you want to manage Check the user manual supplied with the Telnet facility if you are unsure how to do this Once the connection is established the main banner of the VT100 management interface is displayed and you can log on Managing Over The Network Any Network Manager running the Simple Network M
31. the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the noncompatibility is caused by a bug or defect in the third party s product STANDARD WARRANTY SERVICE Standard warranty service for hardware products may be obtained by delivering the defective product accompanied by a copy of the dated proof of purchase to 3Com s Corporate Service Center or to an Authorized 3Com Service Center during the applicable warranty period Standard warranty service for software products may be obtained by telephoning 3Com s Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for safe shipment The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after receipt of the defective product by 3Com WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE CUSTOMER S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION TO THE FULL EXTENT ALLOWED BY LAW THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES TERMS
32. tport4 VLAN Port ID default 1 1 m Display screens for setting up the Switch Enter port number 1 5 100BASE FX 6 TCUR R i 5 7 MODULE 8 168BASE TX m Display a screen for managing the Switch Data b isplay screens for managing resilient links STP STATS RESILIENCE SETUP D m Display screens for managing STP D m Display screens showing statistics Figure 4 7 Switch Management screen for Port level From the Main Menu select SWITCH MANAGE MENT The Switch Management screen is displayed ee as shown in Figure 4 7 Management Level Port Unit VLAN If you Management Level unity choose Port the screen is displayed similar to Figure 4 7 and all options at the foot of the screen relate to an individual port If you choose Unit the screen is displayed similar to Figure 4 8 and all options relate to the Switch unit If you choose VLAN the screen is displayed similar to Figure 4 9 and all options relate to VLANS STATS SDB RESILIENCE SETUP Port ID 7 2 3 6 7 8 If you choose to Figure 4 8 Switch Management screen for Unit level manage the Switch at port level enter the particular port number into this field before selecting the next screen Ports 1 5 are the 100BASE FX ports port 6 is the Transceiver Module port 7 is the Plug in Module at the rear of the unit and port 8 is the 100BASE TX port CHAPTER 4 MANAGING THE SWITCH 3000 FX STP Use this button to disp
33. traffic 6 4 Collisions port traffic 6 4 CRC Align Errors port error 6 6 Errors port traffic 6 5 Errors port 6 3 Errors summary 6 2 Fragments port traffic 6 5 Frame Size Analysis port traffic 6 5 Frames Filtered port traffic 6 5 Frames Filtered summary 6 2 Frames Forwarded port traffic 6 5 Frames Forwarded port 6 3 Frames Forwarded summary 6 2 Frames Received port traffic 6 4 Frames Received summary 6 2 Frames Transmitted port traffic 6 4 Frames Transmitted summary 6 2 IFM Count port traffic 6 5 Jabbers port error 6 7 Late Events port error 6 6 Long Frames port error 6 6 Multicasts Received port traffic 6 4 Multicasts Received summary 6 2 Multicasts Transmitted summary 6 2 Octets Received port traffic 6 4 Octets Transmitted port traffic 6 4 resetting to zero 6 2 6 5 6 7 Short Events port error 6 6 Create User screen 4 3 D Data Link Protocol field 3 10 Database Entries field 4 16 database See Switch Database DCD Control field 4 24 default passwords 3 7 router 3 10 settings 1 12 users 3 7 Default RMON Host Matrix field 4 10 Default Router field 3 10 Default VLAN 5 3 Delete Users screen 4 4 Designated Bridge field 5 21 Designated Bridge Port 5 14 Designated Cost field 5 21 Designated Port field 5 20 Designated Root field 5 18 5 20 Destination field 4 28 Device IP Address field 3 10 Device SubNet Mask field 3 10 Disable Interactive Access field 4 12 Downlink
34. twisted pair cabling MIB Management Information Base Stores a device s management characteristics and parameters MIBs are used by the Simple Network Management Proto col SNMP to contain attributes of their managed systems The Switch contains its own internal MIB multicast Single packets copied to a specific subset of net work addresses These addresses are specified in the destination address field of the packet PACE Priority Access Control Enabled 3Com s innovative technology which works in conjunction with a switch to control the latency and jitter associated with the transmission of multimedia traffic over Ethernet and Fast Ethernet POST Power On Self Test An internal test that the Switch carries out when it is powered up protocol A set of rules for communication between devices on a network The rules dictate format timing sequencing and error control resilient link A pair of ports that can be configured so that one will take over data transmission should the other fail See also main port and standby port RJ45 Standard 8 wire connectors for IEEE 802 3 10BASE T networks RMON Remote Monitoring Subset of SNMP MIB II allows monitoring and management capabilities by addressing up to ten different groups of informa tion RPS Redundant Power System Part of the SuperStack I product range provides a backup source of power when connected to the Switch server farm A clus
35. 0 FX RS 232 Modem Port Cable connector 9 pin female Cable connector 25 pin male Screen Shell Screen TxD 3 e 2 TxD RxD 2 3 RxD RTS 7 e 4 RTS CTS 8 CTS DSR 6 6 DSR Ground 5 Ground DCD 1 e 8 DCD DTR 4 e 20 DTR RJ45 Pin Assignments Ports configured as MDI Pin Number TxData 4 Function Transmit data TxData Transmit data RxData Receive data Not Assigned Not Assigned RxData Receive data Not Assigned Not Assigned Ports configured as MDIX Pin Number RxData Function Receive data RxData Receive data TxData Transmit data ot Assigned ot Assigned TxData Transmit data ot Assigned ot Assigned Physical Dimensions E SWITCH 3000 FX TECHNICAL SPECIFICATIONS Height 76mm 3 0in x Width 483mm 19 0in x Depth 300mm 12 0in Weight 4 4kg 9 71bs Environmental Requirements Operating Temperature Storage Temperature Operating Humidity Standards 0 50 C 32 122 F 10 70 C 14 158 F 10 95 relative humidity non condensing EN60068 IEC68 Safety Agency Certifications AC Protection UL 1950 EN60950 CSA 22 2 No 950 5A Time Delay Fuse Electromagnetic Compatibility EN55022 Class B FCC Part 15 Subpart B Class A ICES 003 Class A VCCI Class 2 AS NZS 3548 Class B
36. 200 This field allows you to select the correct line speed baud rate for your terminal or modem If you have enabled auto configuration the line speed is set automatically Char Size 8 This read only field displays the charac ter bit data bit size for the Switch You should set your terminal to the same value Parity NONE This read only field displays the parity setting for the Switch You should configure your terminal to the same setting Stop Bit 7 This read only field displays the stop bit setting for the Switch You should configure your terminal to the same setting Setting Up the Console Port 4 25 4 26 CHAPTER 4 MANAGING THE SWITCH 3000 FX Resetting the Switch 3000 FX ee If you suspect a problem with the Switch you can reset it This operation will reset the 1 From the Main Menu select the RESET option SURES SE BUTAEANGE A BOWSRIEUEIE The Reset screen is displayed as shown in Figure 4 18 2 Select OK OK Resetting the Switch in this way is similar to per forming a power off on cycle No setup information is lost Figure 4 18 Reset screen T CAUTION Performing a reset may cause some of the data being transmitted at that moment to be lost Initializing the Switch 3000 FX This screen allows you to perform a reset as described in the previous section and in addition returns non volatile data stored on the unit to its factory defaults shown on page 1 12 Note that t
37. 2501 1111 91 11 644 3974 62 21 523 9181 82 2 319 4711 60 3 732 7910 65 538 9368 886 2 377 5850 662 231 8151 4 32 725 0202 31 30 6029700 403 265 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 33 1 69 86 68 00 43 1 5134323 42 2 21845 800 49 30 3498790 Berlin 49 89 627320 Munich 36 1 250 83 41 48 22 6451351 41 31 996 14 14 353 1 820 7077 81 3 3345 7251 F 4 APPENDIX F TECHNICAL SUPPORT Regional Sales Office Telephone Number 3Com Latin America Argentina Brazil Chile Colombia Mexico Peru Venezuela 3Com Mediterraneo Italy 3Com Middle East 3Com Nordic AB Denmark Finland Norway Sweden 3Com Russia 3Com South Africa 3Com U K Limited 54 1 312 3266 55 11 546 0869 56 2 633 9242 57 1 629 4110 52 5 520 7841 51 1 221 5399 58 2 953 8122 39 2 253011 Milan 39 6 5279941 Rome 971 4 349049 45 39 27 85 00 358 0 435 420 67 47 22 18 40 03 46 8 632 56 00 007 095 2580940 27 11 807 4397 44 131 2478558 Edinburgh 44 161 8737717 Manchester 44 1628 897000 Marlow Location Telephone Number Fax Number Returning Products for Repair Before you send a product directly to 3Com for repair you must first obtain a Return Materials Authorization RMA number Products sent to 3Com without RMA numbers will be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax U S A and Canada Latin America Europ
38. 3 When you have filled in the form select OK The access options are Console Port Enabled Disabled To prevent access to the management facilities via the console port disable access to the facility for each access level Console Port access for Security is enabled and cannot be changed This prevents accidental dis abling of all access levels from management Remote Telnet Enabled Disabled Telnet is an inse cure protocol You may want to disable all access to the management facilities via Telnet if there is important or sensitive data on your network Community SNMP Enabled Disabled The Switch can be managed via SNMP using a remote Network Manager Community SNMP does have some simple security features but it is an insecure proto col You may want to disable all access to the man agement facilities if there is important or sensitive data on your network SuperStack II Switch Local Security Monitor Secure Manager Specialist Security Monitor Console Port Enabled Enabled Enabled Enabled Enabled Remote Telnet Enabled Enabled Enabled Enabled Enabled Community SNMP Enabled Enabled Enabled Enabled Enabled ox Figure 4 6 Local Security screen Choosing a Switch Management Level 4 7 Choosing a Switch Management Level SRE The Switch Management screen allows you to m Choose between managing a port the unit or a Management level
39. 4 6 reset button 1 11 Reset Count field 6 9 Reset screen 4 26 resets number of 6 8 type 6 8 resetting the Switch 4 26 resilient link pair 4 18 resilient links 1 3 configuring 4 19 creating 4 20 deleting 4 20 rules 4 18 settingup 4 18 viewing 4 19 returning products for repair F 4 Rising Action field 4 13 Rising Threshold field 4 13 RMON 5 22 alarm actions 5 27 benefits 5 24 default alarm settings 5 28 features supported 5 25 groups supported 5 25 probe 5 22 Root Bridge 5 14 Root Cost field 5 18 Root Path Cost 5 14 Root Port field 5 19 Round Trip Time field 6 10 RPS 1 11 connecting 2 6 S safety information English A 1 French A 4 German A 7 screens 4 1 access rights B 1 Auto Logout 3 12 Console Port Setup 4 24 Create User 4 3 Delete Users 4 4 Edit User 4 5 Fault Log 6 9 Initialization 4 27 Local Security 4 6 Logon 3 7 Main Banner 3 6 Main Menu 3 8 Management Setup 3 9 Port Error Analysis 6 6 Port Resilience 4 19 Port Setup 4 11 Port Statistics 6 3 Port STP 5 20 Port Traffic Statistics 6 4 Remote Poll 6 10 Reset 4 26 Software Upgrade 4 28 Status 6 8 Summary Statistics 6 2 Switch Management 4 7 Trap Setup 4 23 Unit Database View 4 16 Unit Resilience Summary 4 21 Unit Setup 4 9 User Access Levels 4 2 VLAN Server 5 10 VLAN Setup 5 8 VLAN STP 5 18 SDB Ageing Time field 4 10 serial number location on unit 1 11 serial port See console port Server Address field 4 28 SLIP
40. Address field 3 10 SLIP Subnet Mask field 3 10 SNMP 1 12 3 6 Community 4 6 quick start 1 13 socket power 1 11 RPS 1 11 Software Upgrade screen 4 28 software version number 6 8 Spanning Tree field 4 10 Spanning Tree Protocol See STP specifications system E 1 Speed field 4 25 standards supported E 2 Standby Links Available field 4 19 STANDBY Port field 4 21 Standby Port ID field 4 19 statistics 6 1 counters See counters port 6 3 porterror 6 6 port traffic 6 4 summary 6 2 Statistics RMON group 5 22 5 25 Status screen 6 8 Stop Bit field 4 25 STP 1 4 5 12 Bridge Identifier 5 14 Bridge Protocol Data Units 5 14 configurations 5 16 configuring port properties 5 20 configuring VLAN properties 5 18 default path costs 5 14 Designated Bridge Port 5 14 enabling and disabling 4 10 5 17 Hello BPDUs 5 15 Hello Time 5 14 Max Age 5 15 Root Bridge 5 14 Root Path Cost 5 14 STP State field 5 20 subnet mask device 3 10 Summary Statistics screen 6 2 Switch 3000 FX 1 1 configuration examples 1 6 dimensions E 1 features 1 1 front view 1 8 initializing 4 27 installing 2 4 LEDs 1 9 logging off 3 12 logging on 3 7 management setup 3 9 portsetup 4 11 positioning 2 1 powering up 2 6 rack mounting 2 4 rearview 1 10 resetting 4 26 size E 1 stacking with other units 2 4 unit defaults 1 12 unit setup 4 9 upgrading software 4 28 wallmounting 2 5 weight E 1 Switch Database 4 15 adding anentry 4 17 ageing entries 4 15
41. CED MANAGEMENT Configuring the STP Parameters of Ports The Port STP screen allows you to set up and manage the STP parameters of each port on the Switch To access the Port STP screen From the Main Menu select SWITCH MANAGE MENT The Switch Management screen is displayed In the Management Level field choose Port In the Port ID field enter the ID of the port to be configured Choose the STP button The Port STP screen is dis played as shown in Figure 5 15 The Port STP screen shows the following Port ID 7 2 3 6 7 7 8 This read only field shows the ID of the port to be configured STP State Disabled Listening Blocking Learning Forwarding This read only field shows the current state of the port m Disabled A port in this state does not forward packets and does not participate in STP opera tion m Listening A port in this state is preparing to forward packets but has temporarily blocked to prevent a loop During the Listening state BPDUs are transmitted received and processed m Blocking A port in this state does not forward packets to prevent more than one active path existing on the network The port is included in STP calculations and BPDUs can be transmitted received and processed SuperStack II Switch Port STP Port ID 1 STP State Designated Root Designated Bridge Forwarding FFFF 88884e Bahaf2 FFFF 68664e6747c9 Designated Port 86 61 Designated Cost 8
42. COM CORPORATION LIMITED WARRANTY ELECTRO MAGNETIC COMPATIBILITY STATEMENTS ABOUT THIS GUIDE About This Guide provides an overview of this guide describes the guide conventions tells you How to Use This Guide where to look for specific information and lists other This table shows where to find specific information publications that may be useful in this guide If you are looking for Turn to Introduction An overview of the Switch 3000 FX Chapter 1 This guide provides the information you need to Information about installing the Switch 3000 FX into Chapter 2 install and configure a Switch 3000 FX 3C16940A your network with v3 1 agent software The guide is intended for Information about the methods you can use to man Chapter 3 use by network administrators who are responsible age the Switch 3000 FX for installing and setting up network equipment Information about managing the Switch 3000 FX Chapter 4 consequently it assumes a basic working knowledge Information about more advanced management fea Chapter 5 of Local Area Networks tures for example VLANs Spanning Tree and RMON f o Information about monitoring the status of the Chapter 6 If the information in the Release Notes shipped Switch 3000 FX with your product differs from the information in Safety information PER his guide follow the Release Notes tais g i Information about the access rights for each VT100 Appendix B gt Throughout this guide
43. E PAID AT 3COM S OPTION THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE Some countries states or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers or the limitation for personal injury so the above limitations and exclusions may be limited in their application to you This warranty gives you specific legal rights which may vary depending on local law GOVERNING LAW This Limited Warranty shall be governed by the laws of the state of California 3Com Corporation 5400 Bayfront Plaza Santa Clara CA 95052 8145 1 408 764 5000 9 1 96 ELECTRO MAGNETIC COMPATIBILITY STATEMENTS FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference to radio communications in which case the user will be required to
44. ED is flashing yellow or the agent software of the Plug in Module is not installed correctly Plug in Module is not recognized Link is not present or Plug in Module is not installed in the Switch Switch is powered up Switch is operating normally Switch or Plug in Module is either downloading software or initializing which includes a Power On Self Test Switch has failed its Power On Self Test Plug in Module has failed its Power On Self Test CHAPTER 1 GETTING STARTED Unit Overview Rear Socket for Redundant Power System RPS Reset button u D D A Reset O Console A SERIAL NO XXXXXXXXXX 9600 8 1 N A A IEC Power socket Unit serial number Console port for Location for Location for Ethernet amp fuse holder out of band management Plug in Module Transceiver Module address Figure 1 4 Switch 3000 FX rear view Power Socket The Switch 3000 FX automatically adjusts to the supply voltage The fuse is suitable for both 110V A C and 220 240V A C operation For informa tion on replacing fuses refer to Appendix A Unit Serial Number You may need this serial number for fault reporting purposes Redundant Power System Socket Use one of these sockets to connect a SuperStack Il Redundant Power System RPS to the unit You can use e
45. EN 50082 1 Category 5 screened cables must be used to ensure compliance with the Class B Class 2 requirements of this standard The use of unscreened cables Category 5 for 100BASE TX ports complies with the Class A Class 1 requirements Heat Dissipation 100W maximum 341 2 BTU hour maximum Power Supply AC Line Frequency Input Voltage Options Current Rating 50 60Hz 100 120 200 240 VAC 3A maximum at 100 VAC 2A maximum at 240 VAC E 2 APPENDIX E SWITCH 3000 FX TECHNICAL SPECIFICATIONS Standards Supported SNMP SNMP protocol RFC 1157 MIB II RFC 1213 Bridge MIB RFC 1493 Repeater MIB RFC 1516 VLAN MIB RFC 1573 RMON MIB RFC 1271 and RFC 1757 Terminal Emulation Telnet RFC 854 Protocols Used for Administration UDP RFC 768 IP RFC 791 ICMP RFC 792 TCP RFC 793 ARP RFC 826 TFTP RFC 783 BOOTP RFC 951 F TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This appendix describes these services Information contained in this appendix is correct at time of publication For the very latest we recom mend that you access 3Com Corporation s World Wide Web site Online Technical Services 3Com offers worldwide product support 24 hours a day 7 days a week through the following online systems a World Wide Web site m 3Com Bulletin Board Service 3ComBBS m 3ComFacts automated fax service a
46. ER SuperStack II Switch 3000 FX SE User Guide Agent Software Version 3 1 http www 3com com Document No DUA1694 OAAA04 Published June 1997 3Com Corporation m 5400 Bayfront Plaza m Santa Clara California m 95052 8145 Copyright 3Com Ireland 1997 All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without permission from 3Com Ireland 3Com Ireland reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Ireland to provide notification of such revision or change 3Com Ireland provides this documentation without warranty of any kind either implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time UNITED STATES GOVERNMENT LEGENDS If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following restricted rights For units of the Department of Defense Restricted Rights Legend Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii for Restricted Rights in Technical
47. ETUP Powering Up the Switch 1 gt Connect the power cord to the IEC socket on the rear of the Switch and to your mains socket The Switch has no ON OFF switch the only method of connecting or disconnecting mains power is through the power cord The Switch enters a Power On Self Test POST The time taken for the test to complete is dependent on the type of POST configured Refer to Switch Management Setup on page 3 9 for details of how to configure the type of POST For a new Switch that is being installed for the first time power up takes approximately 15 seconds Check the status LEDs to ensure the Switch is oper ating correctly refer to LEDs on page 1 9 Connecting a Redundant Power System RPS You can connect a Redundant Power System RPS to the Switch At 5V the current requirement for the Switch is 4 8A including any Transceiver Module that might be fitted but excluding a Plug in Module Check the documentation supplied with your Plug in Module for power consumption figures For most configurations you only need one Super Stack Il RPS output and this can be connected to either of the two sockets on the rear of the unit If the current consumption of the Switch plus any optional Plug in Module exceeds the capability of the RPS 8 5A you need a SuperStack Il Advanced RPS with one Advanced RPS 100W Module If the RPS is used incorrectly its Output Fault LED lights y
48. IP or IPX Address Throttle milli secs Community String public public public public public public public public D nt dt dd i i nn o C a te dt do ii OK ICANCEL Figure 4 16 Trap Setup screen Throttle This field allows you to specify a throttle delay value for each remote Network Manager Throttle delays are time periods placed between packets to prevent a remote Network Manager receiving too many traps at once The unit of throt tle is one thousandth of a second The default value is 100 which gives a delay of one tenth of a second between each packet transmission CHAPTER 4 MANAGING THE SWITCH 3000 FX Setting Up the Console Port From the Management Setup screen described in Chapter 3 select the CONSOLE PORT button The Console Port Setup screen is displayed as shown in Figure 4 17 If you change any of the console port parameters you terminate any existing sessions using the con sole port when you exit the screen Ensure that the connected equipment s console port parameters are set to match the new configuration This allows you to continue to access the management facility from the equipment after you change the console port parameters The screen shows the following Connection Type Local Remote This field allows you to select the type of console port connection Select Remote if you want to manage the Switch via a modem DCD Control and DSR Control are en
49. Initializing the Switch 3000 FX 4 27 Upgrading Software 4 28 ADVANCED MANAGEMENT Virtual LANs VLANs 5 1 What are VLANs 5 1 Benefits of VLANs 5 1 How VLANs Ease Change and Movement 5 2 How VLANs Control Broadcast Traffic 5 2 How VLANs Provide Extra Security 5 2 An Example 5 2 VLANs and the Switch 3000 FX 5 3 The Default VLAN and Moving Ports From the Default VLAN 5 3 Connecting VLANs to a Router 5 3 Connecting Common VLANs Between Switch Units 5 3 Using AutoSelect VLAN Mode 5 4 Using Non routable Protocols 5 5 Using Unique MAC Addresses 5 5 Extending VLANs into an ATM Network 5 5 VLAN Configuration Example 5 6 Setting Up VLANs on the Switch 5 8 Assigning a Port to a VLAN When Using Port VLAN Mode 5 9 Specifying that a Port is a VLT Port 5 9 Setting Up VLANs Using AutoSelect VLAN Mode 5 10 Specifying Information About the VLAN Server 5 10 Specifying AutoSelect VLAN Mode 5 11 Spanning Tree Protocol 5 12 What is STP 5 12 How STP Works 5 14 STP Initialization 5 14 STP Stabilization 5 14 STP Reconfiguration 5 14 An Example 5 15 STP Configurations 5 16 Enabling STP on the Switch 5 17 Configuring STP on the Switch 5 18 Configuring the STP Parameters of VLANs 5 18 Configuring the STP Parameters of Ports 5 20 RMON 5 22 What is RMON 5 22 About the RMON Groups 5 22 Statistics 5 22 History 5 22 Alarms 5 23 Hosts 5 23 Hosts Top N 5 23 Matrix 5 23 Filter 5 23 Capture 5 23 Events 5 24 Benefits of RMON 5 24 RM
50. Normal Extended This field allows you to determine the type of self test that the Switch carries out when it is powered up If the field is set to Normal the Switch performs a Fast Boot a basic confidence check lasting approximately 15 seconds When the Switch per forms a Fast Boot it carries out the following tests m Checksum test of boot and system areas of Flash memory m System memory tests m MAC address verification test Setting up the Switch for Management 3 9 SuperStack II Switch Management Setup MAC Address 68 BO4E 6B99A5 Power On Self Test Type Normal Device IP Address 191 1 1 58 Device SubNet Mask 255 255 255 8 1 SLIP Address 192 101 1 1 SLIP SubNet Mask 255 255 255 0 Default Router 191 1 1 28 BOOTP Select Enabled IPX Network Node Status Data Link Protocol 90356561 68664e6b99a5 Enabled Ethernet_862 3 90356502 68664e6b99a5 Enabled Ethernet_862 2 90356563 686684e6b99a5 Enabled Ethernet_II 90060668 68664e6b99a5 Enabled Ethernet_SNAP OK SETUP TRAPS CONSOLE PORT Figure 3 4 Management Setup screen m System timer test m CAM Contents Addressable Memory tests Console port tests m Internal packet forwarding tests m ASIC Application Specific Integrated Circuit tests a ASIC memory tests Switch Plug in Module interface test m Plug in Module packet forwarding tests m Plug in Module ASIC tests Plug in Module ASIC memory
51. ON AND SETUP Installing the Switch 3000 FX Rack Mounting The Switch is 1 5U high and fits in most standard 19 inch racks gt from underside of the unit if fitted CAUTION Disconnect all cables from the Switch before continuing Remove all self adhesive pads 1 Place the unit the right way up on a hard flat sur face with the front facing towards you 2 Locate a mounting bracket over the mounting holes on one side of the unit as shown in Figure 2 2 o Pee HN HUM PH HH _ MH HU a PAP OR 30 HP rk LA XPH i IT gaaanz da 5 PNN Br O 7 OL Figure 2 2 Fitting a bracket for rack mounting 3 Insert the three screws and fully tighten with a suit able screwdriver 4 Repeat steps 2 and 3 for the other side of the unit 5 Insert the unit into the 19 inch rack and secure with suitable screws not provided Ensure that ventila tion holes are not obstructed 6 Connect network cabling Stacking the Switch and Other Units If the units are free standing up to four units can be placed on top of one another If mixing a variety of SuperStack Il Switch and Hub units the smaller units must be positioned at the top The Switch is supplied with four self adhesive rubber pads Apply the pads to the underside of the unit sticking one in the marked area at each corner of the unit Place the units on top of each other ensur ing that the pads of the upper unit
52. ON and the Switch 5 25 RMON Features of the Switch 5 25 About Alarm Actions 5 27 About Default Alarm Settings 5 28 About the Audit Log 5 28 STATUS MONITORING AND STATISTICS Summary Statistics 6 2 Port Statistics 6 3 Port Traffic Statistics 6 4 Port Error Analysis 6 6 Status Monitoring 6 8 Fault Log 6 9 Remote Polling 6 10 SAFETY INFORMATION Important Safety Information A 1 Power Supply and Fuse A 3 Sockets for Redundant Power System RPS A 3 RJ45 Ports A 3 Fiber Ports A 3 Linformation de S curit Importante A 4 La Source de Courant et Le Fusible A 5 Socle Pour Alimentation Multiple A 6 Les Ports RJ45 A 6 Les Ports Fibre A 6 Wichtige Sicherheitsinformationen A 7 Stromversorgung und Sicherung A 8 Steckdose f r Redundant Power System RPS A 8 RJ45 AnschluBen A 8 Glasfaser AnschluBen A 9 SCREEN ACCESS RIGHTS TROUBLE SHOOTING LEDs C 1 Using the VT100 Interface C 2 Using the Switch C 3 PIN OUTS Null Modem Cable D 1 PC AT Serial Cable D 1 Modem Cable D 2 RJ45 Pin Assignments D 2 SWITCH 3000 FX TECHNICAL SPECIFICATIONS TECHNICAL SUPPORT Online Technical Services F 1 World Wide Web Site F 1 3Com Bulletin Board Service F 1 Access by Analog Modem F 1 Access by Digital Modem F 2 3ComFacts Automated Fax Service F 2 3ComForum on CompuServe Online Service F 2 Support from Your Network Supplier F 3 Support from 3Com F 3 Returning Products for Repair F 4 GLOSSARY INDEX 3
53. OTP is enabled and you have a BOOTP server on your net work an IP address is automatically mapped to the Switch when it is first powered up In addition to mapping an IP address BOOTP can also assign the subnet mask and default router Using a BOOTP server avoids having to configure devices individu ally SLIP Address If you are using SLIP enter an address that has a network part different to the network address of the Switch For more information consult your network administrator You must reset the Switch after changing this parameter SLIP SubNet Mask Enter a suitable SubNet Mask For a Class B address 255 255 0 0 is suitable For more information consult your network administra tor You must reset the Switch after changing this parameter There are four entries under the following four fields one for each data link layer protocol that can be used by IPX IPX Network This read only field shows the address of the network for this protocol This address is learned automatically from the local IPX router or Netware file server and you do not need to change it Node This read only field shows the node address of the Switch which is learned automatically Status Enabled Disabled If this field is set to Enabled you have access to the medium access pro tocol Set this field to Disabled if you wish to pre vent access for security reasons Data Link Protocol This read only field shows the name of the IPX data link
54. RMON RMON is the common abbreviation for the Remote Monitoring MIB Management Information Base a system defined by the IETF documents RFC 1271 and RFC 1757 which allows you to monitor LANs remotely A typical RMON setup consists of two components The RMON probe An intelligent remotely controlled device or software agent that continually collects statistics about a LAN segment or VLAN and transfers the information to a management workstation on request or when a pre defined threshold is crossed m The management workstation Communi cates with the RMON probe and collects the sta tistics from it The workstation does not have to be on the same network as the probe and can manage the probe by in band or out of band connections About the RMON Groups The IETF define nine groups of Ethernet RMON sta tistics This section describes these groups and details how they can be used Statistics The Statistics group provides traffic and error statis tics showing packets bytes broadcasts multicasts and errors on a LAN segment or VLAN Information from the Statistics group is used to detect changes in traffic and error patterns in critical areas of your network History The History group provides historical views of net work performance by taking periodic samples of the counters supplied by the Statistics group The group features user defined sample intervals and bucket counters for complete customization
55. SE To change the fuse release the fuse holder by gently levering a small screwdriver under the fuse holder catch Only 5A Time Delay anti surge fuses of the same type and manufacture as the original should be used Important Safety Information A 3 Sockets for Redundant Power System RPS Only connect a 3Com Redundant Power System to this socket For details follow the installation instructions in the manuals accompanying the Redundant Power System RJ45 Ports WARNING The RJ45 ports are shielded RJ45 data sockets They cannot be used as telephone sockets Only connect RJ45 data connectors to these sockets Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets Fiber Ports WARNING Optical safety CLASS LED PRODUCT Under normal viewing conditions there is no hazard from the fiber Transmit LED It is recommended however that the LED is not viewed through any magnifying device whilst it is powered on It is advisable that the fiber Tx port and fiber cable ends are never viewed directly when powered on APPENDIX A SAFETY INFORMATION L information de S curit Importante AVERTISSEMENT Les avertissements contiennent les directions que vous devez suivre pour votre s cu rit personnelle Suivez toutes les directives avec soin Veuillez lire fond l information de la s curit suiva nte avant d installer le Switch m L ins
56. SE TX Port LEDs The Switch has a single Fast Ethernet 100BASE TX RJ45 port configured as MDIX cross over which provides a 100Mbps connection to for example a local server Maximum segment length is 100m 328ft over category 5 UTP or STP cable As this port is configured as MDIX cross over you need to use a cross over cable to connect to devices whose ports are MDIX only Most of the 100BASE TX ports in 3Com devices are MDIX only The table below describes the LED behavior on the Switch 3000 FX For more details about corrective action in the event of a problem refer to LEDs on page C 1 LED Color Unit Overview Front 1 9 Indicates Port Status LEDs ports 1 6 and 8 Packet Status Yellow Green Green flashing Off Frames are being transmitted received on the port Link is present port is enabled Link is present port is disabled Link is not present Plug in Module Status LEDs port 7 Packet Status Yellow Green Green flashing Green flashing long on short off Yellow Yellow flashing Off Unit Status LEDs Power MGMT Green Green Green flashing Yellow Yellow flashing Frames are being transmitted received on the Plug in Module port Link is present port is enabled Link is present port is disabled Refer to the SuperStack II Switch ATM OC 3c Module User Guide Plug in Module has failed its Power On Self Test if the MGMT L
57. a frame of valid length has an invalid CRC but does not have a framing error It is likely that a bit has been corrupted in transmission An align ment error occurs if a frame has a CRC error and does not have an integral number of octets Align ment errors may be caused by a fault at the trans mitting device Check cables and connections for damage If this does not solve the problem try changing the trans ceiver or adapter card of the device connected to the port at the source of the problem Short Events This counter is incremented by one for each carrier event whose duration is less than the short event maximum time Short events are error frames smaller than the minimum size defined for Ethernet frames They may indicate externally generated noise causing problems on the network Check the cabling routing and re route any cabling which may be affected by external noise sources SuperStack II Switch Port Error Analysis Port ID 5 168BASEFX CRC Align Errors Short Events Late Events Long Frames Jabbers CLEAR SCREEN COUNTERS Figure 6 4 Switch Port Error Analysis screen Late Events This counter is incremented by one each time a collision occurs after the valid packet minimum time A late event is an out of window collision that may occur if your Ethernet LAN exceeds the maximum size as defined in the IEEE standard A late event is also counted as a collision Long Frames This counter is incr
58. abled For all other cases this field should be set to Local DCD Control Enabled Disabled This field is only applicable to local connection types It determines if DCD is required for a local connection and whether the connection is closed if DCD is removed Refer to your terminal or modem user documenta tion if you are unsure of the correct setting SuperStack II Switch Console Port Setup Connection Type Local DCD Control Disabled DSR Control Disabled Flow Control NONE Auto Config Enabled peed 9600 Char Size 8 Parity NONE Stop Bit 1 OK ICANCEL Figure 4 17 Console Port Setup screen DSR Control Enabled Disabled This field is only applicable to local connection types It determines if DSR is required for a local connection and whether the connection is closed if DSR is removed Refer to your terminal or modem user documentation if you are unsure of the correct setting Flow Control XON XOFF NONE RTS CTS Unidirectional RTS CTS Bidirectional This field allows you to select the correct flow control option for your terminal or modem Refer to your terminal or modem user documentation if you are unsure of the correct setting Auto Config Enabled Disabled The Switch can auto configure the line speed baud rate of the console port to work with your VT100 terminal This field allows you to specify whether auto configuration is enabled Speed 7200 2400 4800 9600 19
59. ables and replace any that may be damaged gt If the port is directly connected to an endstation the Lost Links counter increments each time the endstation goes through a power off on cycle Intelligent Flow Management Enable Disable This field allows you to enable or disable Intelligent Flow Management IFM IFM minimizes packet loss which can occur with conventional switches CHAPTER 4 MANAGING THE SWITCH 3000 FX IFM should be disabled if the port is connected to a repeated segment where the traffic is mainly local to that segment IFM is not available on a port that has full duplex enabled f the Duplex Mode field in this screen is set to Full Duplex the Intelligent Flow Management field is not displayed a In all other cases where the port has full duplex enabled IFM has no effect Disable Interactive Access Yes No This field allows you to disable the Interactive Access feature of PACE Priority Access Control Enabled on the current port You should disable Interactive Access on a port if m The port is connected to a repeater m The port is connected to a device with Interac tive Access enabled For more information about the Interactive Access feature refer to Setting Up the Switch Unit on page 4 9 VLT Mode Enable Disable This field allows you to specify whether the port is a Virtual Lan Trunk VLT port A Virtual LAN Trunk or VLT is a Switch to Switch link which carries traffic fo
60. access the VLAN LEC Setup screen for extending your VLANs into an ATM network For more information refer to the SuperStack II Switch ATM OC 3c Module User Guide Virtual LANs VLANs 5 9 Assigning a Port to a VLAN When Using Port VLAN Mode In the Port ID field enter the ID of the required port In the VLAN ID field enter the ID of the required VLAN Select APPLY CAUTION Initially all Switch ports belong to the Default VLAN VLAN 1 This VLAN is the only one that allows an SNMP Network Manager to access the management agent of the unit If you remove all ports from VLAN 1 an SNMP Network Manager cannot manage the Switch Specifying that a Port is a VLT Port To specify that a port is a VLT port refer to Set ting Up the Switch Ports on page 4 11 To create a VLT link the ports on both ends of the link must be VLT ports 5 10 CHAPTER 5 ADVANCED MANAGEMENT Setting Up VLANs Using AutoSelect VLAN Mode To set up VLANs using AutoSelect VLAN Mode you need to m Specify information about the VLAN Server m Specify that the Switch unit or individual ports on the unit use AutoSelect VLAN Mode Specifying Information About the VLAN Server The VLAN Server screen allows you to specify infor mation about the VLAN Server To access the VLAN Server screen From the Main Menu select SWITCH MANAGE MENT The Switch Management screen is displayed In the Management Level field choose VLAN
61. age value exceeds the rising threshold value the rising action is triggered The action is not triggered again until the aver age broadcast bandwidth falls below the falling threshold level Setting Up the Switch Database SDB The Switch maintains a database of device addresses that it receives on its ports It uses the information in this database to decide whether a frame should be forwarded or filtered The database holds up to a maximum of 4080 entries each entry consists of the MAC address of the device and an identifier for the port on which it was received If you have set up Traps for the Switch notification that the database is becoming full is provided by two traps m Database is 90 full m Database is 100 full These traps indicate that the maximum number of devices which can be connected to the Switch has been reached You cannot connect any more devices to the Switch Entries are added into the Switch Database in two ways m The Switch can learn entries That is the unit updates the SDB with the source MAC address and the port identifier on which the source MAC address is seen m The system administrator can enter and update entries using a MIB browser an SNMP Network Manager or the Switch Database screen described in the following sections Setting Up the Switch Database SDB There are three types of entries in the SDB m Ageing entries Initially all entries in the data base are
62. ageing entries Entries in the database are removed aged out if after a period of time ageing time the device has not transmitted This prevents the database from becoming full with obsolete entries by ensuring that when a device is removed from the network its entry is deleted from the database Ageing entries are deleted from the database if the Switch is reset or a power off on cycle occurs For more informa tion about setting an ageing time refer to Set ting Up the Switch Unit on page 4 9 Non ageing entries If the ageing time is set to 0 00 all ageing entries in the database are defined as non ageing entries This means that they do not age but they are still deleted if the Switch is reset or a power off on cycle occurs For more information about setting an ageing time refer to Setting Up the Switch Unit on page 4 9 Permanent entries Permanent entries do not age and they are retained in the database if the Switch is reset or a power off on cycle occurs 4 16 CHAPTER 4 MANAGING THE SWITCH 3000 FX The Database View The Unit Database View screen as shown in Figure 4 12 allows you to view and configure the Switch Database To access this screen display the Switch Management screen choose the manage ment level Unit then select the SDB button MAC Address 18 0020af 436438 No 18 68 604e Bahaf2 No j i j Port Number 18 68684e6747c9 N The Unit Database View screen shows the fo
63. anagement Protocol SNMP can manage the Switch 3000 FX provided the MIB Management Information Base is installed correctly on the man agement workstation Each Network Manager provides its own user inter face to the management facilities 3Com s Tran scend range of Network Managers all have facilities for managing the Switch 3000 FX The Switch 3000 FX supports SNMP over both IP and IPX protocols IP Addresses If you are uncertain about IP addresses that may be assigned to your devices contact your network administrator first To operate correctly each device on your network must have a unique IP address IP addresses have the format n n n n where n is a decimal number between 0 and 255 An example IP address is 191 128 40 120 The IP address can be split into two parts m The first part 191 128 in the example identifies the network on which the device resides m The second part 40 120 in the example identi fies the device within the network If your network is internal to your organization only you may use any arbitrary IP address We sug gest you use addresses in the series 191 100 X Y where X and Y are numbers between 1 and 254 Use 191 101 X Y for the SLIP address If your network has a connection to the external IP network you will need to apply for a registered IP address This system ensures that every IP address used is unique if you do not have a registered IP address you may be using an ident
64. at higher level protocols are involved Bridges form a single logical network cen tralizing network administration broadcast A message sent to all destination devices on the network broadcast storm Multiple simultaneous broadcasts that typically absorb available network bandwidth and can cause network failure console port The port on the Switch accepting a terminal or modem connector It changes the parallel arrange ment of data within computers to the serial form used on data transmission links This port is most often used for dedicated local management CSMA CD Channel access method used by Ethernet and IEEE 802 3 standards in which devices transmit only after finding the data channel clear for some period of time When two devices transmit simultaneously a collision occurs and the colliding devices delay their retransmissions for a random amount of time data center switching The point of aggregation within a corporate net work where a switch provides high performance access to server farms a high speed backbone con nection and a control point for network manage ment and security Ethernet A LAN specification developed jointly by Xerox Intel and Digital Equipment Corporation Ethernet networks operate at 10Mbps using CSMA CD to run over cabling Fast Ethernet 100Mbps technology based on the Ethernet CD net work access method forwarding The process of sending a frame toward its destina
65. ate 4 11 4 19 Lost Links 4 11 MAC Address 3 9 4 16 Main Port 4 21 Main Port ID 4 19 Management Level 4 7 Max Age 5 18 Media Type 4 11 4 19 New Password 4 5 Node 3 10 Number of Resets 6 8 Old Password 4 5 Oversize Frames 4 10 PACE 4 9 Pair Enable 4 20 4 22 Pair State 4 19 4 21 Parity 4 25 Password 4 3 Path Cost 5 21 Permanent 4 16 Plug in Module Type 4 10 Poll Period 5 10 Port Enable 5 21 Port Number 4 16 PortSpeed 4 11 Port State 4 11 Power On Self Test Type 3 9 Power Supply 4 10 Priority 5 21 Remote Telnet 4 6 Reset Count 6 9 Rising Action 4 13 Rising Threshold 4 13 Root Cost 5 18 Root Port 5 19 Round Trip Time 6 10 SDB Ageing Time 4 10 Server Address 4 28 SLIP Address 3 10 SLIP Subnet Mask 3 10 Spanning Tree 4 10 Speed 4 25 Standby Links Available 4 19 STANDBY Port 4 21 Standby Port ID 4 19 Stop Bit 4 25 STP State 5 20 sysName 4 9 System Up Time 6 8 Target Address 6 10 Throttle 4 23 5 10 Time Since Topology Change 5 19 Topology Changes 5 18 Transceiver Module Type 4 10 Type 5 8 UnitName 4 9 Upgradable Software Version 6 8 User Name 4 3 4 5 VLAN Configuration Mode 4 10 4 13 VLAN ID 5 9 5 18 VLAN Membership 5 8 VLAN Server Community String 5 10 VLAN Server IP Address 5 10 VLT Mode 4 12 File Name field 4 28 Filter RMON group 5 23 5 26 Flow Control field 4 24 Forward Delay field 5 19 full duplex 1 3 configuration rules 2 2 enabling and disabling 4 10 4 12 fuse changing A
66. ble protocols 5 5 Number of Resets field 6 8 O Old Password field 4 5 on line technical services F 1 Oversize Frames field 4 10 P PACE 1 4 disabling Interactive Access for a port 4 12 enabling and disabling 4 9 PACE field 4 9 Pair Enable field 4 20 4 22 Pair State field 4 19 4 21 Parity field 4 25 Password field 4 3 passwords changing 4 5 default 3 7 forgetting 4 5 new 4 3 Path Cost field 5 21 path costs default 5 14 permanent entries 4 15 displaying 4 16 specifying 4 17 Permanent field 4 16 pin assignments modem cable D 2 nullmodem cable D 1 RJ45 D 2 serial cable D 1 Plug in Module 1 2 slot 1 11 Plug in Module Type field 4 10 Poll Period field 5 10 port 100BASE FX 1 2 1 9 100BASE TX 1 2 1 9 console 1 11 enabling and disabling 4 11 speed 4 11 statistics 6 3 Port Enable field 5 21 Port Error Analysis screen 6 6 Port Number field 4 16 Port Resilience screen 4 19 Port Setup screen 4 11 Port Speed field 4 11 Port State field 4 11 Port Statistics screen 6 3 Port STP screen 5 20 Port Traffic Statistics screen 6 4 Port VLAN Mode 5 4 POST See Power On Self Test Power On Self Test Type field 3 9 power supply 1 11 Power Supply field 4 10 powering up 2 6 Priority field 5 21 problem solving C 1 Q quick start for SNMP users 1 13 R rack mounting 2 4 Redundant Power System See RPS Remote Monitoring See RMON Remote Poll screen 6 10 remote polling 6 10 Remote Telnet field
67. bled You enable or disable a resilient link pair using the Port Resilience screen described in Configuring Resilient Links on page 4 19 OK This button allows you to access the Port Resil ience screen for the current resilient link pair Setting Up Traps gt Traps are messages sent across the network to an SNMP Network Manager They alert the network administrator to faults or changes at the Switch device Your Network Manager may automatically set up traps in the Switch Trap Table Check the documen tation accompanying the network management software To access the Trap Setup screen select the SETUP TRAPS button from the Management Setup screen described in Chapter 3 The Trap Setup screen is shown in Figure 4 16 The screen shows the following IP or IPX Address This field allows you to enter the IP or IPX address of the remote network manage ment stations to which traps should be sent Community String This field allows you to enter community strings for each remote Network Man ager allowing a very simple method of authentica tion between the Switch and the remote Network Manager The text string can be of 32 characters or less If you want a Network Manager to receive traps generated by the device you must enter the community string of the Network Manager into the trap table The default community string is public Setting Up Traps 4 23 SuperStack II Switch Trap Setup
68. ccurs once Try changing the following attributes in the Broad cast Storm Control section of the Port Setup screen m Rising Action to disable port notify m Falling Action to event enable For more information refer to Setting Up the Switch Ports on page 4 11 APPENDIX C TROUBLE SHOOTING You have added the Switch 3000 FX to an already busy network and response times and traffic levels have increased You may have added a group of users to one of the Switch 3000 FX ports via a repeater or switch and not turned off Intelligent Flow Management IFM Turn off IFM on any port that is connected to multi ple devices Refer to Setting Up the Switch Ports on page 4 11 You have connected an endstation directly to the Switch and the endstation fails to boot cor rectly The Switch has STP enabled and the endstation is booting before the STP initialization process is com plete Specify that the port has Fast Start enabled and then reboot the endstation For more informa tion about specifying Fast Start for a port refer to Configuring the STP Parameters of Ports on page 5 20 The Switch keeps ageing out endstation entries in the Switch Database SDB The Switch has STP enabled and STP is instructing the Switch to age entries in the SDB faster because topology changes are occurring in the network Reduce the number of topology changes by enabling Fast Start for all ports which are direc
69. ch and protects the quality of multimedia traffic Setting Up the Switch Unit 4 9 SuperStack II Switch Unit Setup Unit Name Switch 3888 sysName Max 38 chars Switch 3808 FX 1 PACE Disablet ULAN Configuration Mode Port SDB Ageing Time HH MM 9 38 Spanning Tree Enable Duplex Hode Half Duplex Oversize Frames Forward Default RMON Host Matrix Enable Plug in Module Type Not Fitted Transceiver Module Type Not Fitted Power Supply Internal OK ICANCEL Figure 4 10 Unit Setup screen m Interactive Access When two way multimedia traffic passes over an Ethernet network interfer ence can occur because access to the bandwidth is unequally allocated to traffic in one direction The Interactive Access feature allocates the avail able bandwidth equally in both directions there fore increasing the quality of the traffic Interactive Access should only be enabled on ports that connect to a single endstation switch bridge or router You should disable Interactive Access on a port if it is connected to a repeater Also Interac tive Access should be enabled at only one end of a link For more information about disabling Interactive Access for a port refer to Setting Up the Switch Ports on page 4 11 CHAPTER 4 MANAGING THE SWITCH 3000 FX VLAN Configuration Mode Port AutoSelect This field allows you to specify how ports on the Switch are placed in VLANs m Port
70. chraubenzieher die Abdeckungsklappe der Sicherungshalterung l sen Sicherungen nur durch gleichen Typ und Wert wie die Originalsicherung ersetzen Sicherung auswech sein und die Klappe der Sicherungshalterung wieder schlieBen Steckdose f r Redundant Power System RPS Nur ein 3Com Redundant Power System an diese Steckdose anschlieBen F r weitere Angaben die genauen Einbauanweisungen im Handbuch zum Redundant Power System befolgen RJ45 AnschluBen WARNUNG Hierbei handelt es sich um abge schirmte RJ45 Datenbuchsen die nicht als Telefon buchsen verwendbar sind Nur RJ45 Datensteckverbinder an diese Buchsen anschlieBen Diese Datenstecker k nnen entweder mit abge schirmten oder unabgeschirmten Datenkabeln mit abgeschirmten oder unabgeschirmten Klinkensteck ern verbunden werden Wichtige Sicherheitsinformationen A 9 Glasfaser AnschluBen WARNUNG Optische Sicherheit LEDGERAT DER KLASSE Unter normalen Umst nden geht von der ber tragenden LED keine Gefahr f r die Augen aus Es wird aber empfohlen die LED nicht durch Ver gr erungslinsen zu betrachten solange die Leucht diode unter Strom steht Ebenso ist es ratsam den Glasfaser Tx Anschlu und die Enden der Glasfaserk abel nicht direkt zu betrachten solange diese unter Strom stehen A 10 APPENDIX A SAFETY INFORMATION B SCREEN ACCESS RIGHTS The following table lists the rights assigned to each level of
71. configuring 4 16 deleting an entry 4 17 non ageing entries 4 15 permanent entries 4 15 searching 4 17 traps 4 15 Switch Management screen 4 7 sysName field 4 9 system specifications E 1 System Up Time field 6 8 T Target Address field 6 10 technical support F 1 3Com URL F 1 Bulletin Board Service F 1 fax service F 2 network suppliers F 3 product repair F 4 using CompuServe F 2 Telnet 3 2 4 6 Throttle field 4 23 5 10 time since reset 6 8 Time Since Topology Change field 5 19 Token Ring frames encapsulation of 4 10 Topology Changes field 5 18 Transceiver Module 1 2 slot 1 11 Transceiver Module Type field 4 10 Trap Setup screen 4 23 traps community strings 4 23 setting up 4 23 throttle 4 23 trouble shooting C 1 Type field 5 8 Cc nit Database View screen 4 16 nit defaults 1 12 nit Name field 4 9 nit Resilience Summary screen 4 21 nit Setup screen 4 9 pgradable Software Version field 6 8 pgrading software 4 28 RL F 1 ser Access Levels screen 4 2 ser Name field 4 3 4 5 users access levels 4 6 changing names 4 5 creating 4 3 default 3 7 deleting 4 4 editing 4 5 names 4 3 passwords 4 3 setting up 4 2 Ce Cue Ce oe hardware 6 8 upgradable software 6 8 Virtual LAN Trunks See VLTs Virtual LANs See VLANs VLAN Configuration Mode field 4 10 4 13 VLAN ID field 5 9 5 18 VLAN Membership field 5 8 VLAN Server 5 4 VLAN Server Community String field 5 10 VLAN Server IP Add
72. correct the interference at their own expense CSA STATEMENT This Class A digital apparatus meets all requirements of the Canadian interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada VCCI STATEMENT CORB ALBARUEER ESMANETOMBLAMMIKSEWTH BENZNEHHNERE TEERBTORKREENLLTENEL IHRE RESERBSAEMHRRS VCCI BREBALTEVYET LAL RRBESVA FLEYSVREMKERLTIBAH KR SE amp EBFORRERZIENBUET DRRAECHEOTELUNHURUNALTFEN INFORMATION TO THE USER If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures E Reorient the receiving antenna Relocate the equipment with respect to the receiver Move the equipment away from the receiver Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington DC 20402 Stock No 004 000 00345 4 In order to
73. d enter the IP or IPX address of the device you want to poll 3 Select the POLL button at the foot of the screen When the poll is complete the Round Trip Time field shows the interval in milliseconds between sending the frame to the target device and receiving a response at the Switch If the target device does not respond after approximately 10 seconds this field displays no reply SAFETY INFORMATION Before carrying out any installation or removal of components or any maintenance procedures on the Switch you must read the following safety information Important Safety Information WARNING Warnings contain directions that you must follow for your personal safety Follow all instructions carefully Please read the following safety information thor oughly before installing the Switch Installation and removal of the unit must be car ried out by qualified personnel only If installing the Switch unit in a stack with Super Stack Hub units the Switch unit must be installed below the narrower Hub units This unit must be earthed Connect the unit to an earthed power supply to ensure compliance with European safety stan dards The power cord set must be approved for the country where it will be used The appliance coupler that is the connector to the device itself and not the wall plug must have a configuration for mating with an EN60320 IEC320 appliance inlet For U S A and Canada
74. e South Africa and Middle East Elsewhere 02 06 97 1 800 876 3266 option 2 1 408 326 7801 44 1442 438125 1 408 326 7804 408 764 7120 408 764 7120 44 1442 435822 1 408 764 7120 GLOSSARY 10BASE T The IEEE 802 3 specification for Ethernet over Unshielded Twisted Pair UTP cabling 100BASE FX 100Mbps Ethernet implementation over fiber 100BASE TX 100Mbps Ethernet implementation over category 5 and Type 1 Twisted Pair cabling ageing The automatic removal of dynamic entries from the Switch Database which have timed out and are no longer valid ATM Asynchronous Transfer Mode A connection ori ented transmission protocol based on fixed length cells packets ATM is designed to carry a complete range of user traffic including voice data and video signals backbone The part of a network used as the primary path for transporting traffic between network segments bandwidth Information capacity measured in bits per second that a channel can transmit The bandwidth of Ethernet is 10Mbps the bandwidth of Fast Ether net is 100Mbps baud rate The switching speed of a line Also known as ine speed BOOTP The BOOTP protocol allows you to automatically map an IP address to a given MAC address each time a device is started In addition the protocol can assign the subnet mask and default gateway to a device bridge A device that interconnects local or remote net works no matter wh
75. e port you can make it more or less likely to become the Root Port The lower the number the more likely it is that the port will be the Root Port The default setting for this field is 128 Path Cost 0 65535 This field allows you to spec ify the path cost of the port The Switch automatically assigns the default path costs shown in Table 5 1 on page 5 14 If you spec ify a new path cost in this field this automatic system is disabled and you can only re enable it by initializing the Switch Spanning Tree Protocol Fast Start Enable Disable This field allows you to specify whether the port goes directly to the For warding state when a device is connected to it Set this field to Enable if the port is directly connected to an endstation The default setting for this field is Disable CAUTION If you set the Fast Start field to Enable when the port is connected to multiple endstations loops may occur in your network CHAPTER 5 ADVANCED MANAGEMENT RMON p Using the RMON Remote Monitoring capabilities of your Switch allows network administrators to improve their efficiency and reduce the load on their network The following sections explain more about the RMON concept and the RMON features supported by the Switch You can only use the RMON features of the Switch if you have an RMON management application such as the RMON application supplied with 3Com s Transcend Enterprise Manager What is
76. e Summary Statistics screen is displayed as shown in Figure 6 1 The Summary Statistics screen lists values for the current counter against every port on the Switch and it is refreshed approximately every 2 seconds Once values have reached approximately 4 000 000 000 they are reset to zero To view values for a particular counter select the first button displayed at the foot of the Summary Statistics screen Pressing Space toggles through the available counters and as soon as you move away from the button the screen is refreshed to show values for that counter FRAMES RECEIVED Displays the total number of frames that have been received by the current port including fragments and frames with errors FRAMES TRANSMITTED Displays the total number of frames successfully transmitted by the current port FRAMES FORWARDED Displays the total number of frames that were received by the current port and forwarded to other ports FRAMES FILTERED Displays the total number of frames that were filtered because the destination station was on the same segment port as the source station SuperStack II Switch Summary Statistics Port 1 8 Port 2 8 Port 3 8 Port 4 8 Port 5 8 TCUR 6 111777 Module 7 Not Fitted 180BASE TX 8 6 FRAMES RECEIVED CLEAR SCREEN COUNTERS ICANCEL Figure 6 1 Summary Statistics screen MULTI BROADCAST RX Displays the total number of frames received by the current port that are add
77. e VLAN If a device in VLAN 1 needs to communicate with devices in VLAN 2 the traffic must cross a router An Example Figure 5 1 shows a network configured with three VLANs one for each of the departments that access the network The membership of VLAN 1 is restricted to ports 1 2 3 4 and 5 of Switch A membership of VLAN 2 is restricted to ports 4 5 6 7 and 8 of Switch B while VLAN 3 spans both Switches containing ports 6 7 and 8 of Switch A and 1 2 and 3 of Switch B In this simple example each of these VLANs can be seen as a broadcast domain physical LAN seg ments that are not constrained by their physical location Backbone connecting multiple switches Switch A Switch B 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 eS G3 a Gs Development Department VLAN 3 eS ES eS eS ES EGS Marketing Department VLAN 1 Figure 5 1 Finance Department VLAN 2 The concept of VLANs VLANs and the Switch 3000 FX The Switch 3000 FX supports VLANs which consist of a set of switch ports Each switch port can only belong to one VLAN at a time regardless of the device to which it is attached Each Switch 3000 FX can support up to 16 VLANs However you can have more than 16 VLANs in your en
78. e con You can manage the Switch 3000 FX in four ways sole port and three Telnet connections m Using the VT100 interface by connecting a VT100 You can establish VT100 management communica terminal or workstation with terminal emulation tion with the Switch through two different inter software to the Switch 3000 FX console port faces m Using the VT100 interface over a TCP IP network m Via the Console Port You can access the using a workstation running VT100 terminal local management interface using a VT100 termi emulation and Telnet nal or PC using suitable terminal emulation soft m Using the VT100 interface by connecting a work warg The terminal can be connected directly to station running SLIP to the Switch 3000 FX con the Switch or via a modem You can also Son sole port nect a management workstation running SLIP to the console port which allows you to use out of band Telnet The workstation can be con nected directly or remotely via a modem This method provides a way of managing the Switch in situations where the LAN is not providing a reliable service or where the Network Manager Using the VT100 Management Interface does not have direct LAN connectivity or when a Network Manager does not support SNMP m Using an SNMP Network Manager over a net work running either the IP or IPX protocol Each Network Manager provides its own user inter face to the management facilities The menu driven user interface built into
79. e network A high utili zation for single endstation segments is an indica tion that your network is operating efficiently However if multiple endstations are connected to this port and you see values of around 40 you should reconsider the topology of your network because each user will see degraded network per formance Port Statistics 6 3 SuperStack II Switch Port Statistics Port ID 5 168BASEFX Bandwidth Used 6 Frames Forwarded 6 Broadcast Frame Bandwidth 0 Error Frames TRAFFIC STATISTICS ERROR ANALYSIS Figure 6 2 Port Statistics screen Frames Forwarded This counter provides a running average of the proportion of frames received by the port that are forwarded expressed as a percentage of all frames received by the port A sampling period of 1 minute is used Broadcast Frame Bandwidth This counter provides a running average of the broadcast frame band width used by the port expressed as a percentage of the maximum bandwidth available for the port A sampling period of 5 seconds is used Error Frames This counter provides a running aver age of the number of errors per 10 000 frames received by the port expressed as a percentage Refer to the field description for Errors on page 6 5 TRAFFIC STATISTICS Select this button to access traffic counters for the port ERROR ANALYSIS Select this button to access error counters for the port 6 4 CHAPTER 6 STATUS MONITORING AND STATISTICS
80. e port Turn port off Enable port Turn port on Notify and move resilient port Notify and blip device Notify and disable device Notify and enable device Blip device Disable device Re enable device Send Trap If port is the main port of a resilient link pair then move to standby Send Trap Block broad cast and multicast traffic on all ports for 5 seconds Send trap Turn all ports on device off Send Trap Turn ports back to original state Block broadcast and mul ticast traffic on all ports for 5 seconds Turn all ports on device off Turn ports back to original state CHAPTER 5 ADVANCED MANAGEMENT About Default Alarm Settings A new or initialized Switch has four alarms defined for each port Bandwidth used Broadcast bandwidth used Percentage of packets forwarded Errors per 10 000 packets The default values and actions for each of these alarms are given in Table 5 4 Table 5 4 Initial settings for the default alarms Statistic High Low Samples Period Threshold Threshold per Recovery average Bandwidth Value 85 Value 50 4 60 seconds used No action No action Broadcast Value 20 Value 10 4 20 seconds bandwidth Notify and No action used blip Percentage Value 85 Value 50 4 60 seconds of packets No action No action forwarded Errors per Value 200 Value 100 4 60 seconds 10 000 Notify No action packets About the Audit Log The Switch keeps an a
81. e the initialization is com plete CHAPTER 4 MANAGING THE SWITCH 3000 FX Upgrading Software gt When 3Com issues a new version of the software image for the Switch you can obtain it from 3Com s information delivery systems described in Online Technical Services on page F 1 For upgrading the ATM OC 3c Module software refer to the SuperStack Il Switch ATM OC 3c Module User Guide You use the Software Upgrade screen to download new software images The protocol used for down loading software images is TFTP running over UDP IP or IPX CAUTION Before attempting to download note m The download only works over the network it does not work through the console port m The download does not work over a Virtual LAN Trunk VLT if you have a Boot software version lower than version 2 0 m The download does not work over an ATM link To upgrade Switch management software From the Main Menu select SOFTWARE UPGRADE The Software Upgrade screen is displayed as shown in Figure 4 20 From the Destination field select Switch this is the default SuperStack II Switch Software Upgrade Destination Switch File Nane 3C16988 51x Server Address This operation will reset the device once the upgrade has been completed IP address format d d d d IPX address format AABBCCDD AABBCCDDEEFF ok Figure 4 20 Software Upgrade screen 3 In the File Name field ente
82. ead only Manager Security Console Port Setup Monitor read only Manager Security Software Upgrade Security Initialize Security Reset Manager Security Remote Poll Manager Security C TROUBLE SHOOTING The following is a list of problems you may see when managing the Switch with suggested courses of corrective action to take If you have a problem which is not listed here and you cannot solve it contact your local technical support representative LEDs Power LED does not light Check that the power cable is firmly connected to the device and to the supply outlet Check the unit fuse For information on changing the fuse refer to Power Supply and Fuse in Appendix A On powering up the MGMT LED lights yellow The unit has failed its Power On Self Test POST and you should contact your supplier for advice On powering up the MGMT LED flashes yel low The installed Plug in Module has failed its Power On Self Test POST Try re installing the Plug in Module ensuring it is correctly seated If the prob lem persists contact your supplier for advice The Plug in Module Status LED lights yellow If the MGMT LED is flashing yellow the Module has failed its Power On Self Test refer to the previ ous advice Otherwise the Module s agent software is not installed correctly Refer to the User Guide supplied with the Module The Plug in Module Status LED flashes yellow The Module is not
83. ead only field displays the current operating state of the resilient link pair m Active The resilient link pair is enabled and operating normally with both main and standby port capable of carrying traffic CHAPTER 4 MANAGING THE SWITCH 3000 FX m Both Failed Although the resilient link is cor rectly configured both links have failed This could be due to loose connections or cable dam age m Unknown The network configuration has changed and the resilient link pair no longer con forms to the rules m Not Available The resilient link pair is disabled Active Port Main Standby If a main link does not have a higher bandwidth than its standby link traf fic is not automatically switched back to the main link when it recovers Use this field to manually switch traffic back to the main link Pair Enable Enabled Disabled Use this field to enable or disable the resilient link pair Before you disable a resilient link pair you must remove cabling from the ports to avoid creating loops in your network configuration Creating a Resilient Link Pair 1 Ensure that the port nominated as the standby port is not physically connected to the unit 2 Ensure both ports have an identical port security mode configuration and that they are members of the same VLAN 3 At the Switch Management screen select the port to be configured as the main port in the link Select the RESILIENCE button at the foot of the screen
84. ect The port uses AutoSelect VLAN Mode which means that the port is automatically placed in the required VLAN by referring to a VLAN Server database in 3Com s Transcend Enter prise Manager software a Unit Default The port uses Port VLAN Mode or AutoSelect VLAN Mode depending on the con tents of the VLAN Configuration Mode field in the Unit Setup screen This is the default setting For more information refer to Using AutoSelect VLAN Mode on page 5 4 Broadcast Storm Control The Switch automati cally creates an alarm on each of its ports in order to monitor the level of broadcast traffic on each port The Broadcast Storm Control fields allow you to specify thresholds for the level of broadcast traffic on a port and specify an action to take place if the threshold is exceeded Rising Threshold This field allows you to specify the percentage of broadcast traffic on the current port which triggers the alarm for the port The default is 20 Setting Up the Switch Ports 4 13 Falling Threshold This field allows you to spec ify the percentage of broadcast traffic on the cur rent port required to reset the alarm for the port The falling threshold prevents the rising threshold events being triggered continuously The default is 10 Rising Action none event disable port disable port notify blip blip port notify Use this field to specify the action for the alarm to take when it reaches the risi
85. ed Bridge Priority 0 65535 This field allows you to specify the priority of the Switch By changing the priority of the Switch you can make it more or less likely to become the Root Bridge The lower the number the more likely it is that the bridge will be the Root Bridge The default setting for this field is 32768 Bridge Max Age 6 40 This field allows you to specify the time in seconds that the Switch waits before trying to re configure the network when it is the Root Bridge If the Switch has not received a BPDU within the time specified in this field it will try to re configure the STP topology The default set ting for this field is 20 seconds The time must be greater than or equal to 2 x Hello Time 1 and less than or equal to 2 x Forward Delay 1 Spanning Tree Protocol Bridge Hello Time 7 70 This field allows you to specify the time delay in seconds between the transmission of BPDUs from the Switch when it is the Root Bridge The default setting for this field is 2 seconds Bridge Forward Delay 4 30 This field allows you to specify the time in seconds that the ports on the Switch spend in the listening and learning states when the Switch is the Root Bridge The default setting is 15 seconds For more information about these states refer to Configuring the STP Parameters of Ports on page 5 20 APPLY This button applies any changes to the STP system CHAPTER 5 ADVAN
86. eld displays the media type connected to the main port Link State Available Not Available Not Present This read only field displays the connection state of the main port m Available The port is operating normally m Not Available The resilient link pair is disabled m Not Present The port is not present in the cur rent hardware Standby Port ID This field shows the current standby port ID and allows you to enter a new port ID The standby port must be in the same VLAN as the main port Media Type Twisted Pair Fiber This read only field displays the standby port media type Setting Up Resilient Links SuperStack II Switch Port Resilience Standby Links Available Po ID Main Port ID 1 Media Type Fiber 2 Link State Available 3 4 5 Standby Port ID 2 6 Media Type Fiber Link State Not Available Pair State Active Active Port Main Pair Enable Enabled DELETE CANCEL Figure 4 14 Port Resilience screen Link State Available Not Available Not Present This read only field displays the connection state of the standby port m Available The port is operating normally m Not Available The resilient link pair is disabled m Not Present The port is not present in the cur rent hardware Standby Links Available This listbox shows the ports that you can configure as standby Pair State Active Both Failed Unknown Not Available This r
87. ellow You should check the documentation supplied with the RPS or Advanced RPS to see if the outputs can be used in parallel Connecting Equipment to the Console Port The Switch console port settings are set to 8 data bits m no parity 1 stop bit The terminal connected to the console port on the Switch must be configured with the same settings This procedure is described in the documentation supplied with the terminal If you have enabled auto configuration for the Switch the terminal s line speed baud rate is detected automatically Connection to the console port can be direct for local management or through a modem for remote management The maximum baud rate the auto configuration detects is 19 200 baud Appropriate cables are available from your local sup plier If you need to make your own cables pin outs are detailed in Appendix D Connecting Equipment to the Console Port 2 7 Connecting a VT100 Terminal To connect a VT100 terminal directly to the console port on the Switch you need a standard null modem cable 1 Connect one end of the cable to the console port on the Switch and the other to the console port on the VT100 terminal 2 Ensure that your terminal is set to 8 data bits no parity 1 stop bit If auto configuration is enabled for the Switch the terminal s line speed baud rate is detected auto matically Connecting a VT100 Terminal Emulator 1 Ensure that the workstatio
88. emented by one each time a frame is received whose octet count is greater than the maximum frame size but less than Jabber frame size Long Frames are frames that exceed the maximum size defined for Ethernet frames 1518 octets If you see a high number of long frames on your network you should isolate the source of these frames and examine the transceiver or adapter card at the device Some protocols may generate these frames Jabbers The total number of packets received that were longer than 8K octets excluding framing bits but including FCS octets CLEAR SCREEN COUNTERS Select this button to set all counters shown on the screen to zero It is useful for trend analysis if you wish to see changes in counters over a short period of time This button does not clear the counters on the device or affect counters at the network management workstation Port Error Analysis 6 8 CHAPTER 6 STATUS MONITORING AND STATISTICS SuperStack II Switch Status Status Monitoring The status screen provides read only information about the Switch This information may be useful for your technical support representative if you have a problem To access the screen from the Main Menu select the STATUS option The Status screen is displayed as shown in Figure 6 5 The Status screen shows the following System Up Time The time the unit has been run ning since the last reset or power off on cycle Number of Resets The total numbe
89. erlands 06 0228049 U S A up to 28800 bps 1 408 980 8204 Belgium 0800 71279 Norway 800 11062 Denmark 800 17319 Portugal 0505 442 607 Access by Digital Modem Finland 98 001 4444 Russia 956 0815 Moscow only ISDN users can dial in to 3ComBBS using a digital Eiane 05 90 81 58 Spain 900 964 445 modem for fast access up to 56 Kbps To access 3ComBBS using ISDN use the following number Germany 0130 81 80 63 Sweden 020 792954 1 408 654 2703 Italy 1678 99085 UK 0800 626403 omForum on Com r nlin rvi 3ComFacts Automated Fax Service ae orum on Compusene Online service 3ComForum contains patches software drivers and technical articles about all 3Com products as well as a messaging section for peer support To use 3ComForum you need a CompuServe account 3Com Corporation s interactive fax service 3ComFacts provides data sheets technical articles diagrams and troubleshooting instructions on 3Com products 24 hours a day 7 days a week T 3ComF Call 3ComFacts using your Touch Tone telephone pe ee using one of these international access numbers 1 Log on to your CompuServe account 2 Type go threecom Country Telephone Number 3 Press Return to see the 3ComForum main menu Hong Kong 852 2537 5610 U K 44 1442 438279 U S A 1 408 727 7021 Local access numbers are available within the following countries Support from Your Network Supplier If additional assistance is required contact your network supplier Many su
90. field on the screen or the previous character in an editable field Ctrl R refreshes the screen Ctrl B moves the cursor to the next button Ctrl P aborts the current screen and returns you to the previous screen Ctrl N actions the inputs for the current screen and moves to the next screen Ctrl K displays a list of the available key strokes Navigating the VT100 Screens 3 5 Correcting Text Entry gt Use Delete on a VT100 terminal or Backspace on a PC This moves the cursor one space to the left and deletes a character If you are using Telnet or a terminal emulation pro gram you may find that some of the Control keys do not operate or that they activate other functions Check carefully in the manual accompanying your Telnet or terminal emulation software before using the Control keys 3 6 CHAPTER 3 SETTING UP FOR MANAGEMENT Setting up the Switch for Management The following sections describe how to get started if you want to use an SNMP Network Manager to manage the Switch It assumes you are already familiar with SNMP management If not we recom mend the following publication The Simple Book by Marshall T Rose ISBN 0 13 812611 9 Published by Prentice Hall m f you are using IP and you have a BOOTP server set up correctly on your network the IP address for the Switch is detected automatically and you can start managing the Switch without any fur ther configu
91. for the first time we suggest that you m Assign a new password for your user using the Edit User screen as described in Editing User Details on page 4 5 m Log on as each of the other default users and change their passwords using the Edit User screen m Create any new users in addition to the default ones To do this you assign each a user name password and security level as described in Creating a New User on page 4 3 SuperStack II Switch Hain Henu SWITCH MANAGEMENT USER ACCESS LEVELS STATUS MANAGEMENT SETUP SOFTWARE UPGRADE INITIALIZE RESET REMOTE POLL LOGOFF Figure 3 3 Main Menu screen Switch Management Setup The Management Setup screen allows you to con figure IP IPX and SLIP parameters for the Switch This screen also allows you to display screens for setting up the console port and traps To access the Setup screen from the Switch Main Menu screen select the MANAGEMENT SETUP option The Setup screen is displayed as shown in Figure 3 4 If you change some of the following parameters the Switch must be reset for the change to take effect Reset the Switch by selecting OK and press ing the Reset button on the rear of the unit Refer to Unit Overview Rear on page 1 10 The screen shows the following MAC Address This read only field shows the MAC address of the Switch unit which is required for management Power On Self Test Type
92. hanism for an automated response to certain occurrences Benefits of RMON Using the RMON features of your Switch has three main advantages RMON improves your efficiency Using RMON probes allows you to remain at one workstation and collect information from widely dispersed LAN segments or VLANs This means that the time taken to reach a problem site set up equipment and begin collecting information is largely eliminated RMON allows proactive management If they are configured correctly RMON probes deliver information before problems occur This means that you can take action before they impact on users In addition probes record the behavior of your network so that you can ana lyze the causes of problems RMON reduces the traffic load Traditional network management involves a man agement workstation polling network devices at regular intervals to gather statistics and identify problems or trends As network sizes and traffic levels grow this approach places a strain on the management workstation and also generates large amounts of traffic An RMON probe however autonomously looks at the network on behalf of the management workstation without affecting the characteristics and performance of the network The probe reports by exception which means that it only informs the management workstation when the network has entered an abnormal state RMON and the Switch RMON requires one probe per LAN segment a
93. he IP address is not cleared You should only initial ize the Switch if m The configuration of the device no longer suits your network m Other efforts to solve problems have not suc ceeded To initialize the Switch From the Main Menu select the INITIALIZE option The Initialize screen is displayed as shown in Figure 4 19 Select OK CAUTION Use the Initialize option with great care The Switch configuration is cleared from memory and cannot be recovered After initialization all user information is lost and only default users are available All ports are set to their default values and are therefore enabled and available to all users When initializing the Switch take particular note of the following m Network loops occur if you have set up resilient links Before initializing the Switch ensure you have disconnected the cabling for all your standby links Initializing the Switch 3000 FX SuperStack II Switch Initialization This operation will change the device back to the factory defaults ox Figure 4 19 Initialize screen a VLT ports fail and you are not able to manage the Switch if your management station communi cates via the VLT To avoid this a Remove the VLT configuration from both ends of the VLT link before you initialize the Switch Note that the port furthest from your manage ment station should have its VLT configuration removed first b Reconfigure the VLT onc
94. he timer expired is displayed If you make a mistake entering your password you are returned to the Logon screen 4 MANAGING THE SWITCH 3000 FX Chapters 4 5 and 6 describe all management If an ATM OC 3c Module is installed in the Switch facilities for the Switch While following steps in gt extra screens are available Refer to the Super these chapters you may find the screen map Stack II Switch ATM OC 3c Module User Guide below useful for more information Main Banner Logon Main Menu J r Nr x r r Switch User Access Status Management Software Initialize Reset Remote Management Levels Setup Upgrade Poll L L JL Trap Console Fauit Log Setup Port L J Local Create Delete Edit Security User Users User I I I I I I I f k f Port Port Port Port Unit Unit Unit Unit VLAN VLAN VLAN STP Statistics Resilience Setup Statistics Database Resilience Setup STP Server Setup L L Port Traffic Port Error Statistics Analysis Figure 4 1 Screen map 4 2 CHAPTER 4 MANAGING THE SWITCH 3000 FX SuperStack II Switch User Access Levels Setting Up Users From the Main Menu select USER ACCESS LEVELS The User Access Levels screen is displayed as shown in Figure 4 2 CREATE USER DELETE USERS EDIT USER From this screen you can access m LOCAL SECURITY screen
95. hould be enabled on a port if it is connected to another switch or an endstation IFM should be disabled on a port connected to a repeater For more information about enabling IFM on a port refer to Setting Up the Switch Ports on page 4 11 About the Switch 3000 FX 1 3 Full Duplex The Switch 3000 FX provides full duplex support for all its fixed ports and Fast Ethernet Plug in Module ports Full duplex allows frames to be trans mitted and received simultaneously and in effect doubles the potential throughput of a link In addi tion full duplex also supports 100BASE FX cable runs of up to 2km 6562ft Full duplex can be enabled on all the relevant ports or on individual ports Full duplex is not supported by the Transceiver Module For more information about enabling full duplex refer to Setting Up the Switch Unit and Setting Up the Switch Ports in Chapter 4 Resilient Links The Resilient Link feature in the Switch 3000 FX enables you to protect critical links and prevent net work downtime should those links fail Setting up resilience ensures that should a main communication link fail a standby duplicate link immediately and automatically takes over the task of the main link Each main and standby link pair is referred to as a resilient link pair For more information about resilient links refer to Setting Up Resilient Links on page 4 18 CHAPTER 1 GETTING STARTED Vir
96. ical address to someone else and your network will not operate correctly Obtaining a Registered IP Address InterNIC Registration Services is the organization responsible for supplying registered IP addresses The following contact information is correct at the time of publication Network Solutions Attn InterNIC Registration Service 505 Huntmar Park Drive Herndon VA 20170 U S A Telephone 1 703 742 4777 If you have access to the Internet you can find fur ther information about InterNIC by entering the fol lowing URL into your web browser http www internic net Managing Over The Network 3 4 CHAPTER 3 SETTING UP FOR MANAGEMENT Navigating the VT100 Screens Screen Conventions To differentiate types of information the VT100 screens use the following conventions Type of information Shown on screen as Description Choice Field Entry Field Button List Box etext text OK monitor manager security Text enclosed with markers is a list from which you can select one option only Press the spa cebar to cycle through the options Press Down Arrow or Return to move to the next field Text enclosed in square brackets on the screen is a text entry field A text entry field allows you to enter text numeric data or hexadecimal data from the keyboard Password fields are hidden which means that the text you type is not shown on the screen In some cases a text entr
97. ings of these paraneters Bridge Priority 32768 Bridge Max Age s 26 Bridge Hello Time s 2 Bridge Forward Delay s 15 APPLY CANCEL Figure 5 14 VLAN STP screen Topology Changes This read only field shows the number of network topology changes that have occurred in the current VLAN Max Age 6 40 This read only field shows the time in seconds that the Switch waits before trying to re configure the network If the Switch has not received a BPDU within the time specified in this field it will try to re configure the network topol ogy Designated Root This read only field shows the Bridge Identifier of the designated Root Bridge Hello Time 7 70 This read only field shows the time delay in seconds between the transmission of BPDUs from the Switch Root Cost This read only field shows the path cost from the Switch to the Root Bridge Forward Delay 4 30 This read only field shows the time in seconds that the ports on the Switch spend in the listening and learning states For more information about these states refer to Configur ing the STP Parameters of Ports on page 5 20 Root Port This read only field shows the Root Port of the Switch Hold Time This read only field shows the shortest time interval in seconds allowed between the transmission of BPDUs Time Since Topology Change This read only field shows the time interval since the last topology change was detect
98. itch 3000 Bee ee a ee EX on page 5 3 To specify that a port is a D i about how to configure VLANs using AutoSe etting Up the SWEN is ol por refer to Setting Up the Switch lect VLAN Mode refer to Setting Up VLANs Ports on page 4 11 Using AutoSelect VLAN Mode on page 5 10 VLAN Membership This field displays the ID of the VLAN s to which the port belongs Port This field allows you to select the ID of the port that you want to set up Type VLT Standby ATM AutoSelect This field displays information about the setup of the port Port ID 1 2 3 6 7 8This field displays the ID of the port currently selected in the listbox VLAN ID 7 2 3 14 15 16 If the port speci fied in the Port ID field uses Port VLAN Mode this field allows you to enter the ID of the VLAN to which the port is to be assigned If the port uses AutoSelect VLAN Mode you cannot specify the VLAN ID By default all ports use Port VLAN Mode and belong to the Default VLAN VLAN 1 This field is not displayed if the port is a VLT port If one or more ports use AutoSelect VLAN Mode you cannot use VLAN 15 Also if you are using the Spanning Tree Protocol you cannot use VLAN 16 In these cases the relevant VLANs are used internally by the Switch and are therefore not available APPLY This button applies any changes to the VLAN database ATM LEC Setup If the port is an ATM OC 3c Module port this button allows you
99. ither socket Refer to Connecting a Redun dant Power System RPS on page 2 6 Reset Button Using the reset button simulates a power off on cycle This has the same effect as carrying out a reset via the VT100 interface refer to Resetting the Switch 3000 FX on page 4 26 Console Port Connect a terminal to the console port to carry out remote or local out of band configuration and man agement The console port is set to auto baud 8 data bits no parity and 1 stop bit Unit Overview Rear Plug in Module Slot Use this slot to install a Plug in Module The Module can be used to provide an additional high speed link to the rest of your network 3Com provides a range of Plug in Modules contact your supplier for avail ability gt When a Plug in Module is not installed ensure the blanking plate is secured in place Transceiver Module Slot Use this slot to connect a Transceiver Module and provide a 10Mbps link to the rest of the network 3Com provides a range of Transceiver Modules con tact your supplier for availability gt When a Transceiver Module is not installed ensure the blanking plate is secured in place Ethernet Address This label shows the unique Ethernet or MAC address assigned to the unit 1 12 CHAPTER 1 GETTING STARTED Unit Defaults The following table shows the factory defaults for the Switch 3000 FX features Port Status Intelligent Flow Manageme
100. ively the unit can be rack mounted in a wiring closet or equipment room A wall mounting rack mounting kit containing two mounting brack ets and six screws is supplied with the Switch When deciding where to position the unit ensure that You are able to meet the configuration rules detailed in the following section The unit is accessible and cables can be con nected easily Cabling is away from Sources of electrical noise such as radios transmitters and broadband amplifiers a Power lines and fluorescent lighting fixtures Water or moisture cannot enter the case of the unit Air flow around the unit and through the vents in the side of the case is not restricted We recom mend that you provide a minimum 25mm tin clearance No objects are placed on top of the unit Units are not stacked more than four high if free standing 2 2 CHAPTER 2 INSTALLATION AND SETUP Configuration Rules for Fast Ethernet Configuration Rules with Full Duplex The topology rules for 100Mbps Fast Ethernet are slightly different to those for 10Mbps Ethernet Figure 2 1 illustrates the key topology rules and pro vides examples of how they allow for large scale Fast Ethernet networks The key topology rules are m Maximum UTP cable length is 100m 328ft over category 5 cable m A 412m 1352ft fiber run is allowed for connect ing switch to switch or endstation to switch using half duplex 100BASE FX m A
101. l emulation FTP file transfer and other services for communication among a wide range of computer equipment Telnet A TCP IP application protocol that provides virtual terminal service letting a user log in to another computer system and access a host as if the user were connected directly to the host TFTP Trivial File Transfer Protocol Allows you to transfer files such as software upgrades from a remote device using your Switch unit s local management capabilities Transcend UDP VLAN VLT VT100 3Com s umbrella management system used to manage all of 3Com s networking solutions User Datagram protocol An Internet standard proto col that allows an application program on one device to send a datagram to an application pro gram on another device Virtual LAN A group of location and topol ogy independent devices that communicate as if they are on a common physical LAN Virtual LAN Trunk A Switch to Switch link which carries traffic for all the VLANs on each Switch A type of terminal which uses ASCII characters VT100 screens have a text based appearance INDEX Numerics 100BASE FX port 1 2 1 9 100BASE TX port 1 2 1 10 3Com Bulletin Board Service 3ComBBS F 1 3Com sales offices F 3 3Com URL F 1 3ComFacts F 2 3ComForum F 2 A Access Level field 4 3 access rights B 1 Active Port field 4 20 4 21 ageing entries 4 15 ageing time specifying 4 10 agent software ver
102. lay screens for managing Spanning Tree Protocol STP information for the level of management you have chosen port or VLAN Refer to Spanning Tree Protocol on page 5 12 STP is not supported over Asynchronous Transfer Mode ATM Consequently if you specify that you want to manage the Plug in Module port and the Switch has an ATM OC 3c Module installed the STP button is not displayed SERVER Use this button to display the VLAN Server screen used for entering the IP address and com munity string of a VLAN server For more informa tion about VLAN servers refer to Virtual LANs VLANs on page 5 1 STATS Use this button to display statistics screens for the level of management you have chosen port or unit Refer to Chapter 6 SDB Use this button to display the Unit Database View screen which is used to manage the Switch Database Refer to The Database View on page 4 16 RESILIENCE Use this button to display resilient link management screens for the level of management you have chosen port or unit Refer to Setting Up Resilient Links on page 4 18 You cannot set up resilient links if the Switch uses Spanning Tree STP Consequently the RESILIENCE button is not displayed if STP is enabled SuperStack II Switch Management STP SERVER SETUP CANCELJ Management Level ULAN Figure 4 9 Switch Management screen for VLAN level SETUP Use this button to display setup
103. layer protocol SETUP TRAPS Select this button to display the setup screen for trap parameters Trap Setup is described in Setting Up Traps on page 4 23 CONSOLE PORT Select this button to display the setup screen for console port parameters Console port setup is described in Setting Up the Console Port on page 4 24 Setting up the Switch for Management 3 12 CHAPTER 3 SETTING UP FOR MANAGEMENT Logging Off SuperStack II Switch Auto Logout If you have finished using the VT100 management interface select the LOGOFF option from the bottom of the main menu If you accessed the VT100 management interface using a Telnet session Auto Logout in Progress Please Re enter Password or modem connection the connection is closed automatically User Name security Password L 1 Auto Logout OK CANCEL There is a built in security timeout on the VT100 interface If you do not press any keys for 3 min utes the management facility warns you that the inactivity timer is about to expire If you do not press a key within 10 seconds the timer expires and the screen is locked any displayed statistics continue to be updated When you next press any key the display changes to the Auto Logout screen Figure 3 5 Auto Logout screen The Auto Logout screen shown in Figure 3 5 requests you to enter your password again If the password is correctly entered the screen that was active when t
104. line up with the recesses of the lower unit Wall Mounting A A single Switch can be wall mounted CAUTION Disconnect any cables from the unit before continuing Remove self adhesive pads from the underside of the unit if they have been previously fitted Place the Switch the right way up on a hard flat sur face with the front facing towards you Locate a mounting bracket over the mounting holes on one side of the unit as shown in Figure 2 3 Insert the two screws and tighten with a suitable screwdriver Repeat for the other side of the unit Ensure that the wall you are going to use is smooth flat dry and sturdy Attach a piece of plywood approximately 305mm x 510mm x 12mm 12in x 20in x 0 5in securely to the wall if necessary and mount the Switch as follows a Position the base of the unit against the wall or plywood ensuring that the ventilation holes face sidewards Mark on the wall the position of the screw holes in both wall brackets Drill the four holes b Using suitable fixings and screws not provided attach the Switch unit securely to the wall or ply wood c Connect network cabling Installing the Switch 3000 FX 2 5 See ALL LA lt gt 02888 Arad HU HU PDA OL ON Body 286000000684 949 HH 950568 60505 o 50066606 He HO Ce DUO LH WA 6 m o 0 Mn D Bb Fe 17 u Ss Figure 2 3 Fitting a bracket for wall mounting CHAPTER 2 INSTALLATION AND S
105. llo BPDU the bridge assumes that the Root Bridge or a link between itself and the Root Bridge has gone down The bridge then ini tiates a reconfiguration of the network topology You can adjust timers to determine how quickly a network reconfigures and therefore how rapidly the network recovers from a path failure refer to Con figuring the STP Parameters of VLANs on page 5 18 Spanning Tree Protocol LAN A PC 100 PC 100 Port 1 Port Port Forwarding Forwarding Forwarding Bridge A Root Bridge B Bridge X Port 2 Port 2 Port 2 Forwarding Forwarding Blocking PC 100 PC 100 LAN B PC 100 PC 200 Port Port 1 Forwarding Forwarding Bridge C Bridge Y Port 2 Port 2 Forwarding Blocking PC 100 PC 200 LANC Figure 5 11 Port costs in a network 5 16 CHAPTER 5 ADVANCED MANAGEMENT STP Configurations Figure 5 12 shows two possible STP configurations using SuperStack Il Switch units Configuration 1 Redundancy for Back bone Link In this configuration a Desktop Switch and Switch 3000 FX both have STP enabled and are connected by two Fast Ethernet links STP discov ers a duplicate path and disables one of the links If the enabled link breaks the disabled link becomes re enabled therefore maintaining con nectivity m Configura
106. llowing ort Huber 1 1 poses 1 Permanent 4No 18 68064e6bcbc8 No Database Entries This read only field shows the number of entries currently in the SDB The data FIND REFRESH INSERT DELETE base holds a maximum of 4080 addresses MAC Address If you highlight an entry in the list box and press Return this field shows the MAC address for the entry Port Number If you highlight an entry in the list box this field shows the port identifier for the entry Permanent Yes No This field allows you to specify that the current entry is permanent Refer to the previous section Setting Up the Switch Database SDB for a description of permanent and ageing entries You cannot specify that the current entry is perma nent if the port uses AutoSelect VLAN Mode For more information refer to Using AutoSelect VLAN Mode on page 5 4 A listbox containing the following three fields Port The port ID for the entry MAC Address The MAC address for the port currently stored in the database SuperStack II Switch Unit Database View Database Entries 19 18 66865Fd23235 No Port MAC Address Permanent 18 68 004e 684901 No 18 686662657253 No 18 08 004e 086338 No 18 68 664e6855ca No 18 68 604e 653cdb No 18 888848105377 No Figure 4 12 Unit Database View screen gt Permanent Yes No Shows Yes if this entry is permanent or No if this entry is ageing or non ageing FIND This bu
107. mediately prevents or blocks one of them from forwarding traffic Figure 5 9 shows the result of enabling STP on the bridges in the configuration The STP system has decided that traffic from LAN segment 2 to LAN segment 1 can only flow through Bridges C and A If the link through Bridge C fails as shown in Figure 5 10 the STP system reconfigures the net work so that traffic from segment 2 flows through Bridge B Spanning Tree Protocol 5 13 LAN Segment 1 LAN Segment 1 i Ft Bridge A Bridge B Bridge A Bridge B LAN Segment 2 LAN Segment 2 Bridge C Bridge C LAN Segment 3 LAN Segment 3 DK Figure 5 8 A network that creates loops Figure 5 10 Traffic flowing through Bridge B LAN Segment 1 gt K Bridge A Bridge B LAN Segment 2 Bridge C LAN Segment 3 Figure 5 9 Traffic flowing through Bridges C and A 5 14 CHAPTER 5 ADVANCED MANAGEMENT How STP Works The Root Path Cost consists of the path cost of the Root Port of the bridge plus the path costs across all the Root Ports back to the Root Bridge Table 5 1 shows the default path costs for the Switch 3000 FX STP Initialization Initially the STP system requires the following before it can configure the network Communication between all the bridges This Table 5 1 Default path costs communication is carried ou
108. meet FCC emissions limits this equipment must be used only with cables which comply with IEEE 802 3
109. n e avec aucun appareil de grossisse ment pendant qu elle est sous tension C est recommand que le port de fibre Tx et les fins de c ble du fibre ne soient jamais directement exam in es pendant qu ils soient sous tension Wichtige Sicherheitsinformationen WARNUNG Warnungen enthalten Anweisungen die zur eigenen Sicherheit unbedingt zu beachten sind Bitte befolgen Sie alle Anweisungen sorgf ltig und genau Bitte unbedingt vor dem Einbauen des Switch Ein heit die folgenden Sicherheitsanweisungen durchle sen m Ein und Ausbau des Ger tes ist nur von Fachper sonal vorzunehmen Wenn die Switch Einheit in einer Stapel mit anderen SuperStack II Hub Einheiten eingebaut werden soll mu die Switch Einheit unter die schmaleren Hub Einheiten eingebaut werden m Dieses Ger t mu geerdet sein m Das Ger t an geerdete Stromversorgung anschlie en um eine bereinstimmung mit den europ ischen Sicherheitsbestimmungen zu gew hrleisten m Der Anschlu kabelsatz mu mit den Bestimmun gen des Landes bereinstimmen in dem er ver wendet werden soll m Die Anordnung der Ger tsteckvorrichtung d h die Steckverbindung am Ger t selbst im Gegen satz zum Wandstecker mu in den EN60320 IEC320 Zuf hrungsstecker am Ger t passen Wichtige Sicherheitsinformationen A 7 Es ist wichtig da der Netzstecker sich in unmit telbarer N he zum Ger t befindet und leicht erre ichbar ist Das Ger t kann nur du
110. n is running a suitable terminal emulation package There are many avail able contact your local supplier for further details 2 If you are using a PC you need a null modem cable with an appropriate connector Connect one end of the cable to the workstation and the other end to the console port on the Switch 3 Ensure that your workstation is set to 8 data bits m no parity 1 stop bit T If auto configuration is enabled on the Switch the workstation s line speed baud rate is detected automatically 2 8 CHAPTER 2 INSTALLATION AND SETUP Connecting a Workstation Running SLIP You can communicate with the Switch via the con sole port from a workstation running SLIP Serial Line Internet Protocol In this way you can perform out of band management using Telnet or SNMP Cables required for this connection depend on the type of workstation you are using You must config ure the workstation to run SLIP Refer to the docu mentation supplied with the workstation for more details You must configure the console port of the Switch to accept SLIP and set up the SLIP parameters address and subnet mask Refer to Switch Man agement Setup on page 3 9 gt You may need a 5 wire cable when running SLIP Two of the wires are required for Flow Control 3 SETTING Up FOR MANAGEMENT The Switch can support up to four management Methods of Managing the Switch user sessions concurrently for example on
111. ncap sulated Token Ring frames from 3Com s Token Ring products Set this field to Forward if the Switch is connected to 3Com products which support Token Ring encapsulation for example the SuperStack II Switch 2000 otherwise set the field to Discard Default RMON Host Matrix Enable Disable This field allows you to specify whether Hosts and Matrix RMON sessions are defined on the Default VLAN The default setting for this field is Disable For more information about RMON sessions refer to RMON on page 5 22 Plug in Module Type This read only field displays the type of Plug in Module fitted to the rear of the unit or displays Not Fitted Transceiver Module Type This read only field dis plays the type of Transceiver Module fitted to the rear of the unit or displays Not Fitted Power Supply Internal External This read only field displays External if the Switch is receiving power from a Redundant Power System In all other cases this field displays nternal Setting Up the Switch Ports With the Switch Management screen displayed choose the management level Port Choose the appropriate port then select the SETUP button The Port Setup screen is displayed as shown in Figure 4 11 If the port is an ATM OC 3c Module port the ATM Port Setup screen is displayed For more informa tion refer to the SuperStack II Switch ATM OC 3c Module User Guide The screen shows the following Port ID This read o
112. nd stand alone RMON probes have traditionally been expensive Therefore 3Com s approach has been to build an inexpensive RMON probe into the Smart Agent of each Switch This allows RMON to be widely deployed around the network without cost ing more than traditional network management A problem with stand alone RMON probes is that they are passive able to monitor and report but nothing more Placing probe functionality inside the network device allows integration of RMON with normal device management to allow proactive man agement For example statistics can be related to individual ports and the Switch can take autonomous actions such as disabling a port temporarily or permanently if errors on that port exceed a pre defined thresh old Also since a probe needs to be able to see all traffic a stand alone probe has to be attached to a non secure port Implementing RMON in the Switch means all ports can have security features enabled RMON RMON 5 25 Features of the Switch Table 5 2 details the RMON support provided by the Switch Table 5 2 RMON support supplied by the Switch RMON Group Support supplied by the Switch Statistics History Alarms A new or initialized Switch has one Statistics ses sion per port VLAN A new or initialized Switch has three History ses sions on each 100BASE FX port the 100BASE TX port and the Default VLAN O second intervals 120 historical samples ored ored
113. ng threshold m none no action takes place m event an SNMP trap is generated m disable port the port is disabled m disable port notify the port is disabled and an SNMP trap is generated m blip the broadcast and multicast traffic on the port is blocked for 5 seconds blip port notify the broadcast and multicast traffic on the port is blocked for 5 seconds and an SNMP trap is generated If user defined appears as an option in the Rising Action field an unrecognized action has been speci fied using a MIB browser You cannot select this option CHAPTER 4 MANAGING THE SWITCH 3000 FX Falling Action none event enable event enable Use this field to specify the action for the alarm to take when it reaches the falling threshold none no action takes place event an SNMP trap is generated enable the port is enabled event enable the port is enabled and an SNMP trap is generated If user defined appears as an option in the Falling Action field an unrecognized action has been speci fied using a MIB browser You cannot select this option You should be aware of the following points when using Broadcast Storm Control The Switch takes 5 7 seconds to recognize that a broadcast storm is occurring Broadcast Storm Control calculates the average broadcast bandwidth over the previous 20 second interval The average is based on four samples taken at 5 second intervals When the aver
114. nks have failed Check for any loose connections or cable damage m Unknown The network configuration has changed and the resilient link pair no longer con forms to the rules m Not Available The resilient link pair is disabled Setting Up Resilient Links SuperStack II Switch Unit Resilience Summary MAIN STANDBY Pair Active Pair Port Port State Port Enable 61 62 Active Main Enabled OK ICANCEL Figure 4 15 Unit Resilience Summary screen Active Port Main Standby Both Failed This read only field displays which port in the resilient link pair is currently carrying traffic m Main The pair is operating in its normal state with the main port carrying traffic m Standby The main port has failed and the standby port is carrying the traffic You should rectify the fault as soon as possible If a main port has a higher bandwidth than the standby port traffic is automatically switched back pro vided no loss of link is detected for two minutes Otherwise switch the traffic back manually by setting the Active Port field in the Port Resilience screen described on page 4 19 to Main m Both Failed Both ports of the resilient link pair have failed This could be due to loose connec tions or cable damage CHAPTER 4 MANAGING THE SWITCH 3000 FX Pair Enable Enabled Disabled This read only field displays whether the resilient link pair is currently enabled or disa
115. nly field shows the ID of the port you have chosen to setup Media Type This read only field shows the media type of the link connected to this port Port Speed 700Mbps HD 100Mbps FD 10Mbps HD This read only field shows the speed and duplex mode of the link HD indicates half duplex and FD indicates full duplex Port State Enable Disable This field allows you to enable or disable the port To prevent unauthorized access we recommend that you disable any unused ports Setting Up the Switch Ports SuperStack II Switch Port Setup Port ID 2 Media Type 188BASE FX Port Speed 188Mbps HD Port State Enable Link State Not Available Lost Links 8 Broadcast Storm Control Refer to the User Guide before changing the settings of these parameters Intelligent Flow Management Enable Disable Interactive Access o ULT mode Disable Duplex Mode Unit Default ULAN Configuration mode unit Default Rising Threshold 26 Action blip port notify Falling Threshold 16 Action none oK Figure 4 11 Port Setup screen Link State Present Not Available This read only field shows the state of the link m Present The port is operating normally a Not Available The link has been lost Lost Links This read only field shows the number of times the link has been lost since the Switch was last reset If the number in this field is not zero you should check your c
116. nt Duplex Mode Virtual LANs PACE Spanning Tree STP Power On Self Test POST System Alarm broadcast bandwidth used System Alarm errors per 10 000 packets System Alarm bandwidth used System Alarm percentage of frames forwarded Enabled Enabled Half duplex on all relevant ports All ports use Port VLAN Mode and belong to the Default VLAN VLAN 1 Disabled Disabled Normal Fast Boot Enabled a High threshold 20 Notify and Blip a Low threshold 10 No action Enabled a High threshold 2 Notify a Low threshold 1 No action Enabled m High threshold 85 No action a Low threshold 50 No action Enabled m High threshold 85 No action a Low threshold 50 No action Managing the Switch 3000 FX The menu driven interface built into the Switch 3000 FX is known as the VT100 interface You can access it using a VT100 terminal or a PC using ter minal emulation software You can connect the ter minal directly to the Switch or via a modem You can also access the VT100 interface remotely using Telnet running over the TCP IP protocol Remote management is also possible using a Net work Manager from 3Com s Transcend product range The management protocol is SNMP Simple Network Management Protocol and any SNMP based management facility can manage the unit if the Management Information Base MIB is installed correctly in the management workstation The S
117. o the nearest 256 octet boundary cessfully received that have a multicast destination address This does not include frames directed to a broadcast address or frames received with errors Broadcasts Received The number of frames received that have a broadcast destination address This does not include frames with errors Collisions An estimate of the total number of colli sions that occurred when transmitting from the unit Collisions are a normal part of Ethernet operation that occur when two devices attempt to transmit at the same time A sudden sustained increase in the number of collisions may indicate a problem with a device or cabling on the network particularly if this is not accompanied by an increase in general net work traffic Fragments The total number of packets received that were not an integral number of octets in length or that had a bad Frame Check Sequence FCS and were less than 64 octets in length excluding fram ing bits but including FCS octets Frames Forwarded The total number of frames which were received by the port and forwarded to their destination address Frames Filtered The total number of frames that were filtered because the destination address was on the same segment port as the source station Errors The total number of errors which have occurred on this port Errors can be one of the fol lowing m CRC Alignment Errors m Short Events m Long Frames m Late Events m Jabbers
118. og on using the default user name admin no password is required Select OK The Main Menu is displayed From this menu select the MANAGEMENT SETUP option The Switch Man agement Setup screen is displayed On the Management Setup screen fill in the follow ing fields m Device IP Address m Device SubNet Mask if necessary Default Router if necessary For further information on the Management Setup screen refer to Setting up the Switch for Manage ment on page 3 6 If you need the Switch 3000 FX to send SNMP traps to the Network Manager you may need to set up the address of the Network Manager in the Trap Table Refer to Setting Up Traps on page 4 23 3Com Network Managers such as Transcend Work Group Manager for Windows may automatically configure the Switch 3000 FX to send traps to them Please read the documentation supplied with your network management software When you have finished with the Management Setup screen select OK 1 14 CHAPTER 1 GETTING STARTED INSTALLATION AND SETUP Following Safety Information Before installing or removing any components from the Switch or carrying out any maintenance proce dures you must read the safety information pro vided in Appendix A of this guide Positioning the Switch 3000 FX The Switch is suited for use in the office where it can be wall mounted mounted in a standard 19 inch equipment rack or free standing Alterna t
119. ology which allows multime dia traffic to be carried over standard Ethernet and Fast Ethernet LANs PACE provides two features a Implicit Class of Service When multimedia traf fic is transmitted it is given a higher priority than other data and is therefore forwarded ahead of other data when it arrives at the Switch The Implicit Class of Service feature minimizes latency through the Switch and protects the quality of multimedia traffic About the Switch 3000 FX 1 5 m Interactive Access When two way multimedia traffic passes over an Ethernet network interfer ence can occur because access to the bandwidth is unequally allocated to traffic in one direction The Interactive Access feature allocates the avail able bandwidth equally in both directions there fore increasing the quality of the traffic For more information about setting up PACE on the Switch refer to Setting Up the Switch Unit and Setting Up the Switch Ports in Chapter 4 1 6 CHAPTER 1 GETTING STARTED Network Configuration Examples The following two illustrations show some exam ples of how the Switch 3000 FX can be used on your network Local server EE Switch 1000 Switch 3000 FX fitted with a Plug in Module gt Servers on dedicated 100Mbps connections Examples of how the Switch 3000 FX can be used in a VLAN based network are given in Chapter 5 Local
120. or up to 4080 addresses in the Switch Database Store and forward forwarding mode ensuring the switch forwards all valid Ethernet frames and discards invalid Ethernet frames such as those with an incorrect CRC Intelligent Flow Management for congestion con trol Full duplex on all fixed ports and Fast Ethernet Plug in Module ports Resilient Links Support for 16 Virtual LANs VLANs Spanning Tree Protocol STP per VLAN PACE Priority Access Control Enabled for sup porting multimedia applications over Ethernet 3Com s SuperStack II architecture Connects to Redundant Power System Integrated network management 19 inch rack or stand alone mounting SmartAgent support IP and IPX management over SNMP RMON Repeater and Bridge MIB Broadcast storm control Easy software upgrades BOOTP for automatic IP address configuration Local management CHAPTER 1 GETTING STARTED Port Connections 100BASE FX Ports The Switch has five Fast Ethernet 100BASE FX ports which provide connection to Fast Ethernet devices such as the SuperStack Il Switch 1000 with a 100BASE FX Plug in Module Use 100BASE FX fiber optic cable with SC connectors to support switch ing over 62 5 125 micron The maximum distance supported is 412m 1352ft The maximum distance supported can be extended to 2km 6562ft with full duplex For more informa tion refer to Full Duplex on page 1 3 100BASE TX Port The Switch has a single Fa
121. ou config ure the port at each end of the link VLTs can only be used for links between Super Stack Il Switch 1000 Switch 3000 and Desktop Switch units You cannot use VLTs for Switch router links If you specify that a port on one VLAN is a VLT port that port carries traffic for all the VLANs on the Switch If you then disable the VLT function on that port the port only carries traffic for the Default VLAN VLAN 1 mM CHAPTER 5 ADVANCED MANAGEMENT Using AutoSelect VLAN Mode By default all ports on the Switch use Port VLAN Mode where each switch port is manually placed in the required VLAN The Switch allows some ports to use another mode AutoSelect VLAN Mode In this mode the ports are automatically placed in the required VLAN by referring to a VLAN Server database in 3Com s Transcend Enterprise Manager v6 0 for Windows AutoSelect VLAN Mode works as follows When an endstation is connected to a Switch or moves from one port to another the Switch learns the MAC address of the endstation 2 Port MAC Address VLAN MAC Address VLAN 1 08004e050e31 08004e050e31 2 MAC Address 08004e050e31 VLAN Server Port MAC Address VLAN MAC Address VLAN 1 08004e050e31 08004e050e31 2 amp MAC Address 08004e050e31 VLAN Server Figure 5 2 Switch learns the endsta
122. oups For example you can have one VLAN for directors another for manag ers and another for general staff m Usage Groups For example you can have one VLAN for users of e mail and another for users of multimedia Benefits of VLANs Implementing VLANs on your network has three main advantages m It eases the change and movement of devices on IP networks m It helps to control broadcast traffic m It provides extra security CHAPTER 5 ADVANCED MANAGEMENT How VLANs Ease Change and Movement With traditional IP networks network administra tors spend much of their time dealing with moves and changes If users move to a different IP subnet the IP addresses of each endstation must be updated manually With a VLAN setup if an endstation in VLAN 1 is moved to a port in another part of the network you only need to specify that the new port is in VLAN 1 This is something that can be done auto matically if you have 3Com s Transcend Enterprise Manager for Windows v6 0 and above How VLANs Control Broadcast Traffic With traditional networks congestion can be caused by broadcast traffic which is directed to all network devices whether they require it or not VLANs increase the efficiency of your network because each VLAN can be set up to contain only those devices which need to communicate with each other How VLANs Provide Extra Security Devices within each VLAN can only communicate with devices in the sam
123. p the Switch 2 6 Connecting a Redundant Power System RPS 2 6 Connecting Equipment to the Console Port 2 7 Connecting a VT100 Terminal 2 7 Connecting a VT100 Terminal Emulator 2 7 Connecting a Workstation Running SLIP 2 8 SETTING UP FOR MANAGEMENT Methods of Managing the Switch 3 1 Using the VT100 Management Interface 3 1 Using Telnet 3 2 Managing Over The Network 3 2 IP Addresses 3 2 Obtaining a Registered IP Address 3 3 Navigating the VT100 Screens 3 4 Screen Conventions 3 4 Keyboard Shortcuts 3 5 Correcting Text Entry 3 5 Setting up the Switch for Management 3 6 Logging On 3 7 After Logging On 3 8 Switch Management Setup 3 9 Logging Off 3 12 Auto Logout 3 12 MANAGING THE SWITCH 3000 FX Setting Up Users 4 2 Creating a New User 4 3 Deleting a User 4 4 Editing User Details 4 5 Assigning Local Security 4 6 Choosing a Switch Management Level 4 7 Setting Up the Switch Unit 4 9 Setting Up the Switch Ports 4 11 Setting Up the Switch Database SDB 4 15 The Database View 4 16 Searching the Switch Database 4 17 By MAC Address 4 17 By Port 4 17 Adding an Entry into the SDB 4 17 Deleting an Entry from the SDB 4 17 Specifying that an Entry is Permanent 4 17 Setting Up Resilient Links 4 18 Configuring Resilient Links 4 19 Creating a Resilient Link Pair 4 20 Deleting a Resilient Link Pair 4 20 Viewing the Resilient Setup 4 21 Setting Up Traps 4 23 Setting Up the Console Port 4 24 Resetting the Switch 3000 FX 4 26
124. p the Switch Unit on page 4 9 The Filter group is not presently supported by he Switch The Capture group is not presently supported by he Switch A new or initialized Switch has events defined or use with the default alarm system Refer to About Default Alarm Settings on page 5 28 for more information When using the RMON features of the Switch you should note the following m After the default sessions are created they have no special status You can delete or change them as required m The Switch 3000 FX can forward a very large volume of packets per second The Statistics RMON group is able to monitor every packet but the other groups sample a maximum of 6000 packets a second m The greater the number of RMON sessions the greater the burden on the management resources of the Switch however the forwarding perfor mance of the Switch is not affected About Alarm Actions You can define up to 700 alarms for the Switch The actions that you can define for each alarm are shown in Table 5 3 RMON 5 27 Table 5 3 Alarm Actions Action High Threshold Low Threshold No action Notify only Send Trap Notify and Send Trap Block broad blip port cast and multicast traffic on the port for 5 sec onds Notify and Send Trap Turn port off disable port Notify and Send Trap Turn port enable port on Blip port Block broadcast and mul ticast traffic on the port for 5 seconds Disabl
125. ppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assis tance have the following information ready m A list of system hardware and software includ ing revision levels m Diagnostic error messages m Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com Support from Your Network Supplier Regional Sales Office Telephone Number F 3 Support from 3Com If you are unable to receive support from your network supplier technical support contracts are available from 3Com Contact your local 3Com sales office to find your authorized service provider using one of these numbers 3Com Corporation U S 3Com ANZA East West 3Com Asia Limited P R of China Hong Kong India Indonesia Korea Malaysia Singapore Taiwan R O C Thailand 3Com Benelux B V Belgium Netherlands 3Com Canada Calgary Montreal Ottawa Toronto Vancouver 3Com France 3Com GmbH Austria Czech Slovak Republics Germany Hungary Poland Switzerland 3Com Ireland 3Com Japan 800 NET 3Com or 1 408 764 5000 61 2 9937 5000 61 3 9866 8022 86 10 68492 568 Beijing 86 21 6374 0220 Ext 6115 Shanghai 852
126. r all the VLANs on each Switch To create a VLT the ports on both ends of the link must be VLT ports For more information about VLTs refer to VLANs and the Switch 3000 FX on page 5 3 If the port uses AutoSelect VLAN Mode refer to the VLAN Configuration Mode field you cannot specify that the port is a VLT port Duplex Mode Half Duplex Full Duplex Unit Default This field allows you specify to the Duplex Mode of the port a Full Duplex Full duplex allows frames to be transmitted and received simultaneously and in effect doubles the potential throughput of a link In addition full duplex also supports 100BASE FX cable runs of up to 2km You should only enable full duplex on a point to point link between the Switch and another device with full duplex support m Half Duplex You should use half duplex if the port connects to a shared Ethernet or Fast Ether net LAN segment or if the device at the other end of a point to point link does not support full duplex m Unit Default The Duplex Mode of the port is defined by the Duplex Mode field in the Unit Setup screen This is the default setting Full duplex is not supported on the Transceiver Module port VLAN Configuration Mode Port AutoSelect Unit Default This field allows you to specify how the port is placed in a VLAN m Port The port uses Port VLAN Mode which means that the port is manually placed in the required VLAN m AutoSel
127. r each pair the Matrix group maintains counters of the number of packets number of octets and error packets between the nodes The conversation matrix helps you to examine net work statistics in more detail to discover who is talk ing to whom or if a particular PC is producing more errors when communicating with its file server for example Combined with Hosts Top N this allows you to view the busiest hosts and their primary con versation partners Filter The Filter group provides a mechanism to instruct the RMON probe to capture packets that match a specific criterion or condition Capture The Capture group allows you to create capture buffers on the probe that can be requested and uploaded to the management workstation for decoding and presentation CHAPTER 5 ADVANCED MANAGEMENT Events The Events group provides you with the ability to create entries in an event log and or send SNMP traps to the management workstation Events can originate from a crossed threshold on any RMON variable In addition to the standard five traps required by SNMP link up link down warm start cold start and authentication failure RMON adds two more rising threshold and falling threshold Effective use of the Events group saves you time rather than having to watch real time graphs for important occurrences you can depend on the Event group for notification Through the SNMP traps events can trigger other actions providing a mec
128. r of system resets since the Switch was first installed or initial ized either power on manual reset or a watchdog expiry Last Reset Type Other Command Watchdog Power reset System error This field indicates the cause of the last reset It may be due to manage ment command watchdog timeout expiry power interruption a manual reset or a system error Hardware Version The hardware version number of the Switch System Up Time 2 Hours 26 Minutes 16 Seconds Number of Resets 5 Last Reset Type Command Version Numbers Hardware Version 3 Upgradable Software Version 3 18 Boot Software Version 3 18 FAULT LOG ICANCEL Figure 6 5 Status screen Upgradable Software Version The version number of the agent software image stored in Flash EPROM This version number is automatically updated when you download new software Boot Software Version This is the version number of the Boot software stored on the Switch FAULT LOG Select this button to display the Switch Fault Log described in the next section Fault Log 6 9 Fault Log SuperStack II Switch Fault Log The Fault Log displays read only information about Reset fount Tine seconds anes Fault Number the Switch which is updated whenever an abnor EEE mal condition is detected This information is for internal 3Com use only You may be asked to quote this information if reporting a fault to your supplier This informa
129. r the name of the file that contains the software image to be down loaded to the Switch You must place the image file where it is accessible to the TFTP load request Check with your system administrator if you are unsure of where to place the image file 4 In the Server Address field enter the IP or IPX address of the server containing the software image to be loaded 5 Select OK During the download the MGMT LED flashes green and the screen is locked When the download is complete the Switch is reset Virtual LANs VLANs Setting up Virtual Local Area Networks VLANs on the Switch 3000 FX provides you with less time con suming network administration and more efficient network operation The following sections explain more about the con cept of VLANs and explain how they can be imple mented on the Switch 3000 FX What are VLANs A VLAN is defined as a group of location and topology independent devices that communicate as if they are on the same physical LAN This means that LAN segments are not restricted by the hard ware which physically connects them the segments are defined by flexible user groups that you create using software ADVANCED MANAGEMENT With VLANs you can define your network according to m Departmental groups For example you can have one VLAN for the Marketing department another for the Finance department and another for the Development department Hierarchical gr
130. ration m f you are using the IPX protocol the Switch is allocated an IPX address automatically You can start the SNMP Network Manager and begin managing the Switch m f you are using IP without a BOOTP server you must enter the IP address of the Switch before the SNMP Network Manager can communicate with the device To do this take the following steps SuperStack II Switch SSSS U U PPPP EEEEE RRRR SSSS TTTTT AAA cece K K III III S U UP PE R RS K I A AC K SSS U U PPPP EEEE RRRR SSS T AAAAA C KKK I I T A ac K K T A A su UP E R R S SSSS uuu P EEEEE R R SSSS Switch 3666 FX Press Enter_to Continue Figure 3 1 Main Banner 1 At your terminal press Return one or more times until the Switch 3000 FX Main Banner is displayed shown in Figure 3 1 The console port detects the line speed baud rate from these keystroke and defaults to m auto baud 8 data bits m no parity 1 stop bit Data bits parity and stop bit values cannot be changed 2 At the Main Banner press Return to display the Logon screen Logging On At the Logon screen displayed in Figure 3 2 enter your user name and password note that they are both case sensitive m f you have been assigned a user name and pass word enter those details If you are logging on for the first time after installation or initialization use a default user name and password to match your access requirements The default
131. rch Herausziehen des Verbindungssteckers aus der Steckdose vom Stromnetz getrennt werden Das Ger t wird mit Sicherheits Kleinspannung nach IEC 950 SELV Safety Extra Low Voltage betrieben Angeschlo en werden k nnen nur Ger te die ebenfalls nach SELV betrieben wer den Das Ger t ist unter keinen Umst nden an einen Wechselstrom A C Netzstecker anzuschlie en ohne Erdungsleitung Um bereinstimmung mit den europ ischen Sicherheitsnormen zu gew hrleisten darf am Zuf hrungstecker des Ger tes keine Ersatzsicherung angebracht werden Nur Sicherungen der gleichen Herstellung und Marke sowie des gleichen Typs f r das Ger t verwenden Vorm ffnen der Abdeckungsklappe der IEC Steckverbindungssicherung oder vorm Abneh men der Gesamtabdeckung der Ger t sicher stellen da das Stromverbindungskabel vom Netzstrom getrennt ist Die Austastplatten der Plug in Module oder Sendeempf nger Module nicht entfernen solange die Einheit ans Stromnetz angeschlossen ist APPENDIX A SAFETY INFORMATION Stromversorgung und Sicherung Das Ger t stellt sich automatisch auf die Versor gungsspannung ein Die Sicherung ist sowohl f r 110V A C wie f r 220 240V A C geeignet WARNUNG Vor dem Offnen der Sicherungshalter ung das Gerdt vom Netzstrom trennen Richtige Stellung der Sicherung Falsche Stellung der Sicherung NICHT VERWENDEN Zum Auswechseln der Sicherung durch leichtes Heben mit einem kleinen S
132. ress field 5 10 VLAN Server screen 5 10 VLAN Setup screen 5 8 VLAN STP screen 5 18 VLANs 1 4 5 1 assigning ports 5 9 AutoSelect VLAN Mode 5 4 Default 5 3 extending into an ATM network 5 5 Port VLAN Mode 5 4 setting up 5 8 using non routable protocols 5 5 using unique MAC addresses 5 5 VLTs 5 8 VLT Mode field 4 12 VLTs 5 3 5 8 5 9 VT100 interface accessing 3 1 definition 1 12 logging on 3 7 navigating 3 4 VT100 terminal connecting 2 7 W wall mounting 2 5 World Wide Web WWW F 1 V version number boot software 6 8 Z zeroing screen counters 6 2 6 5 6 7 3Com Corporation LIMITED WARRANTY HARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials under normal use and service for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller Network adapters Lifetime Other hardware products unless otherwise specified above 1 year Spare parts and spare kits 90 days If a product does not operate as warranted above during the applicable warranty period 3Com shall at its option and expense repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned Any replaced or repaired
133. ressed to a multicast or broadcast address MULTI BROADCAST TX Displays the total number of frames transmitted by the current port that are addressed to a multicast or broadcast address ERRORS Displays the total number of errors that have occurred on the current port Refer to the field description for Errors on page 6 5 CLEAR SCREEN COUNTERS Use this button to set all counters shown on the screen to zero Use this button for analysis if you wish to see changes in counters over a short period of time This button does not clear the counters on the device Port Statistics With the Switch Management screen displayed choose the management level port then select the STATISTICS button The Port Statistics screen is dis played as shown in Figure 6 2 As well as showing statistics for the port the Port Statistics screen allows you access to traffic and error counter screens If the port is an ATM OC 3c Module port the ATM Port Statistics screen is displayed For more informa tion refer to the SuperStack II Switch ATM OC 3c Module User Guide The Port Statistics screen shows the following Port ID The ID of the port you are currently manag ing Bandwidth Used This counter provides a running average of the bandwidth used by the port expressed as a percentage of the maximum band width available for the port A sampling period of 1 minute is used The value gives an indication of the general traffic level of th
134. revented from forward ing traffic STP Reconfiguration In the event of a network failure such as a segment going down the STP system reconfigures the net work to cater for the changes If the topology of your network changes the first bridge to detect the change sends out an SNMP trap An Example Figure 5 11 illustrates part of a network All bridges have a path cost value assigned to each port identi fied by PC xxx where xxx is the value Bridge A is selected by STP as the Root Bridge because it has the lowest Bridge Identifier The Designated Bridge Port for LAN A is port 1 on Bridge A Each of the other four bridges have a Root Port the port closest to the Root Bridge Bridge X and Bridge B can offer the same path cost to LAN B In this case Bridge B s port is chosen as the Designated Bridge Port because it has the lowest Bridge Identifier Bridge C s port is chosen as the Designated Bridge Port for LAN C because it offers the lowest Root Path Cost the route through Bridge C and B costs 200 the route through Bridge Y and B would cost 300 You can set the path cost of a bridge port to influence the configuration of a network with a duplicate path Once the network topology is stable all the bridges listen for special Hello BPDUs transmitted from the Root Bridge at regular intervals If the STP Max Age time of a bridge expires refer to Configuring the STP Parameters of VLANs on page 5 18 before receiving a He
135. s a basement switch 5 8 CHAPTER 5 ADVANCED MANAGEMENT Setting Up VLANs on the Switch The VLAN Setup screen allows you to SuperStack II Switch ULAN Setup Port Type ULAN Membership m Assign ports to VLANs if those ports use Port 7 wit DITES TT TUE TE ET VLAN Mode 3 Standby 2 4 1 m View VLAN setup information for the Switch eg To access the VLAN Setup screen 1 From the Main Menu select SWITCH MANAGE MENT The Switch Management screen is displayed Port ID 5 ULAN ID 1 APPLY CANCEL 2 In the Management Level field choose VLAN 3 Choose the SETUP button The VLAN Setup screen is displayed as shown in Figure 5 6 Figure 5 6 VLAN Setup screen The screen shows the following Standby The port is the standby port of a resilient link pair The main port of the pair is A listbox containing three fields displayed in brackets For more information about resilient links refer to Setting Up Resil ient Links on page 4 18 ATM The port is an ATM OC 3c Module port For more information refer to the SuperStack Il Switch ATM OC 3c Module User a VLT The port is a VLT port A Virtual LAN Guide Trunk or VLT is a Switch to Switch link which a AutoSelect The port uses AutoSelect VLAN carries traffic for all the VLANs on each Switch For more information about VLTs in MORE FOMA araea von about Autose a 1 i general refer to VLANs and the Sw
136. s are shown in Table 3 1 If you are setting up the Switch for management we suggest that you log on first as admin Table 3 1 Default Users User Name Default Access Level Password monitor monitor monitor this user can view but not change all manageable parameters manager manager manager this user can access and change the operational parameters but not special security features security security security this user can access and change all manageable parameters admin no password security this user can access and change all manageable parameters Setting up the Switch for Management 3 7 SuperStack II Switch Logon User Name EMMEN Password 1 OK Figure 3 2 Logon screen CHAPTER 3 SETTING UP FOR MANAGEMENT After Logging On When you have successfully logged on to the Switch the Main Menu screen is displayed as shown in Figure 3 3 From here you can select the options needed to manage the unit Refer to the screen map on page 4 1 If you have installed an ATM OC 3c Module into the Switch the Main Menu screen contains an ATM CONFIGURATION option Refer to the SuperStack II Switch ATM OC 3c Module User Guide for more information Access to options depends on the access level you have been assigned Access rights to the VT100 screens for the Switch are listed in Appendix B If you are a user with security access level and are using the management facility
137. s from European sustainable managed forests The production process for making the pulp has a reduced AOX level adsorbable organic halogen resulting in elemental chlorine free paper This paper is fully biodegradable and recyclable CONTENTS ABOUT THIS GUIDE Introduction 1 How to Use This Guide 1 Conventions 2 Related Documentation 2 1 GETTING STARTED About the Switch 3000 FX 1 1 Summary of Features 1 1 Port Connections 1 2 100BASE FX Ports 1 2 100BASE TX Port 1 2 Plug in Module 1 2 Transceiver Module 1 2 Switch Operation and Features 1 3 Intelligent Flow Management 1 3 Full Duplex 1 3 Resilient Links 1 3 Virtual LANs 1 4 Spanning Tree Protocol 1 4 PACE 1 4 Network Configuration Examples 1 6 Unit Overview Front 1 8 100BASE FX Ports 1 9 100BASE TX Port 1 9 LEDs 1 9 Unit Overview Rear 1 10 Power Socket 1 11 Unit Serial Number 1 11 Redundant Power System Socket 1 11 Reset Button 1 11 Console Port 1 11 Plug in Module Slot 1 11 Transceiver Module Slot 1 11 Ethernet Address 1 11 Unit Defaults 1 12 Managing the Switch 3000 FX 1 12 Quick Start For SNMP Users 1 13 Entering an IP Address for the Switch 1 13 INSTALLATION AND SETUP Following Safety Information 2 1 Positioning the Switch 3000 FX 2 1 Configuration Rules for Fast Ethernet 2 2 Configuration Rules with Full Duplex 2 2 Installing the Switch 3000 FX 2 4 Rack Mounting 2 4 Stacking the Switch and Other Units 2 4 Wall Mounting 2 5 Powering U
138. sion number 6 8 alarm actions 5 27 alarm settings default 5 28 Alarms RMON group 5 23 5 25 Asynchronous Transfer Mode See ATM ATM Module 1 1 ATM networks extending VLANs into 5 5 audit log 5 28 Auto Config field 4 24 auto configuration 4 24 auto logout 3 12 Auto Logout screen 3 12 AutoSelect VLAN Mode 5 4 specifying 5 11 B Backup VLAN Server IP Address field 5 10 baud rate See line speed Boot Software Version field 6 8 BOOTP Select field 3 10 BOOTP server 1 13 3 6 BPDUs See Bridge Protocol Data Units Bridge Forward Delay field 5 19 Bridge Hello Time field 5 19 Bridge Identifier 5 14 Bridge Max Age field 5 19 Bridge Priority field 5 19 Bridge Protocol Data Units 5 14 Broadcast Storm Control field 4 13 Bulletin Board Service F 1 C cable maximum length 1 2 1 9 2 2 pin outs D 1 Capture RMON group 5 23 5 26 Char Size field 4 25 Community String field 4 3 4 5 4 23 community strings changing 4 5 entering 4 3 role in trap setup 4 23 VLAN server 5 10 Community SNMP field 4 6 CompuServe F 2 Connection Type field 4 24 console port 1 11 auto configuration 4 24 connecting equipment to 2 7 connection type 4 24 disabling access 4 6 setting up 4 24 speed 4 24 Console Port field 4 6 Console Port Setup screen 4 24 conventions notice icons About This Guide 2 text About This Guide 2 counters Bandwidth Used port 6 3 Broadcast Frame Bandwidth port 6 3 Broadcast Received port
139. st Ethernet 100BASE TX port configured as MDIX cross over which provides a 100Mbps connection to for example a local server The maximum segment length is 100m 328ft over grade 5 twisted pair cable As this port is configured as MDIX cross over you need to use a cross over cable to connect to devices whose ports are MDIX only Most of the 100BASE TX ports in 3Com devices are MDIX only Plug in Module A slot at the rear of the unit can take a Plug in Module providing an additional high speed port This could be used for example to provide a Fast Ethernet or Asynchronous Transfer Mode ATM backbone connection to the rest of your network Transceiver Module A slot at the rear of the unit allows you to install any of the 3Com 10Mbps Ethernet Transceiver Mod ules The Transceiver Module can provide a 10Mbps link to the rest of your network Switch Operation and Features The Switch 3000 FX uses the same algorithm as a conventional 802 1d bridge for filtering forwarding and learning packets Intelligent Flow Management Intelligent Flow Management IFM is a system for controlling congestion on your network Conges tion can be caused by one or more devices sending traffic to an already busy port on the Switch 3000 FX If a port on the Switch 3000 FX is connected to another switch or endstation IFM prevents packet loss and inhibits the device from generating more packets until the period of congestion ends IFM s
140. t VLAN Mode refer to Setting Up VLANs Using AutoSelect VLAN Mode on page 5 10 For more information about the VLAN Server data base refer to the documentation supplied with 3Com s Transcend Enterprise Manager Using Non routable Protocols If you are running non routable protocols on your network for example DEC LAT or NET BIOS devices within one VLAN are not able to communi cate with devices in a different VLAN Virtual LANs VLANs 5 5 Using Unique MAC Addresses If you connect a server with multiple network adapt ers to the Switch we recommend that you config ure each network adapter with a unique MAC address Extending VLANs into an ATM Network If the Switch has an ATM OC 3c Module installed you can extend the VLANs you have defined in your existing network into an ATM network For more information refer to the SuperStack I Switch ATM OC 3c Module User Guide CHAPTER 5 ADVANCED MANAGEMENT VLAN Configuration Example The example shown in Figure 5 5 illustrates two VLANs spanning three Switch 1000 units and a basement Switch 3000 FX unit with a Plug in Mod ule Each Switch 1000 connects to the basement Switch using a VLT The attached router allows the two VLANs to communicate with each other To set up this configuration Use the VT100 screens or VLAN Server database to a Place ports 1 6 and 13 18 of all the Switch 1000 units in VLAN 1 b Place ports 7 12 and 19 24 of all the S
141. t using Bridge Proto Port Type Duplex Cost col Data Units BPDUs which are transmitted in 100BASE TX VLT 100BASE FX VLT Full 5 packets with a known multicast address er o a m One bridge to start as a master or Root Bridge a 10BASE T VLT Half 25 central point from which the network is config ured 100BASE TX 100BASE FX Full 150 Half 300 The Root Bridge is selected on the basis of it having 10BASE T Half 650 the lowest Bridge Identifier value This is a combina tion of the unique MAC address of the bridge and a priority component defined for the bridge The Root Bridge generates BPDUs on all ports at a regular interval known as the Hello Time All other bridges in the network have a Root Port This is the port nearest to the Root Bridge and it is used for receiving the BPDUs initiated by the Root Bridge STP Stabilization Once the network has stabilized two rules apply to the network Each network segment has one Designated Bridge Port All traffic destined to pass in the direction of or through the Root Bridge flows through this port The Designated Bridge Port is the port which has the lowest Root Path Cost for the segment 2 After all the bridges on the network have deter mined the configuration of their ports each bridge only forwards traffic between the Root Port and the ports that are the Designated Bridge Ports for each network segment All other ports are blocked which means that they are p
142. tallation et l enl vement de l unit doivent tre faits seulement par le personnel qualifi m Si vous entassez l unit Switch avec les unit s SuperStack II Hub l unit Switch doit tre install e en dessous des unit s Hub plus troites m Cette unit doit tre mise la terre m Brancher l unit une source de courant mise a la terre pour assurer la conformit aux normes de s curit europ ennes m La cordon d alimentation surmoul doit tre approuv pour le pays auquel il sera utilis m Le socle de connecteur c est dire le connecteur l appareil lui m me et non pas la prise murale doit avoir une configuration pour le branche ment avec une admission d appareil EN60320 IEC320 Pour USA et le Canada m Le cordon surmoul doit tre UL Certifi et CSA Certifi Les sp cifications minimales pour le cordon souple sont No 18 AWG Type SV ou SJ 3 conducteur Le cordon surmoul doit avoir une capacit de courant calcul e au moins de 10A a La fiche de fixation doit tre un type mis la terre avec une configuration NEMA 5 15P 15A 125V ou NEMA 6 15P 15A 250V C est essentiel que le socle soit install pr s de l unit et soit accessible Vous pouvez seulement d brancher l unit en enlevant la fiche d alimen tation de la prise de courant Cette unit marche sous les conditions SELV Safety Extra Low Voltage conform ment IEC950 ces conditions sont maintenues
143. tation soit d branch e avant d ouvrir le couvercle du contenant du fusible L emplacement du fusible correct L emplacement du fusible incorrect NE PAS UTILISER Pour changer le fusible d gager le contenant du fusible en mettant doucement un petit tournevis sous l arr t de contenant du fusible Seulement les fusibles de types 5A anti transitoires du m me type et fabricant que l original doivent tre utilis s A 6 APPENDIX A SAFETY INFORMATION Socle Pour Alimentation Multiple Brancher seulement une alimentation multiple de 3Com cet socle Suivre pour les d tails les direc tives de l installation dans le manuel qui accompa gne l alimentation multiple Les Ports RJ45 AVERTISSEMENT Ceux ci sont les prises de courant de donn es RJ45 prot g es Ils ne peuvent pas tre utilis s comme prises de courant t l pho niques Brancher seulement les connecteurs RJ45 de donn es a ces prises de courant Les c bles de donn es blind s ou non blind s avec les jacks blind s ou non blind s l un ou l autre peuvent tre branch s ces prises de courant de donn es Les Ports Fibre AVERTISSEMENT S curit sur le plan optique _ DISPOSITIF DIODE ELECTROLUMINESCENTE DE CLASSE I Sous les conditions de visionnement ordinaires il n y a pas de danger l oeil cause de la diode lec troluminescente d mission C est recommand cependant que la diode lectroluminescente ne soit pas exami
144. ted is also opera tional under SELV Under no circumstances should the unit be con nected to an A C outlet power supply without an Earth Ground connection To comply with European safety standards a spare fuse must not be fitted to the appliance inlet Only fuses of the same manufacturer make and type should be used with the unit Ensure that the power supply lead is discon nected before opening the IEC connector fuse cover or removing the cover of the unit m France and Peru only This unit cannot be powered from IT imped ance a la terre supplies If your supplies are of the IT type this unit should be powered by 230V 2P T via an isolation transformer ratio 1 1 with the secondary connection point labelled Neutral connected directly to Earth Ground m UK only The Switch is covered by Oftel General Approval NS G 12345 100003 for indirect connection to a public telecommunications system This can only be achieved using the console port on the unit and an approved modem m Do not remove the Plug in Module or Transceiver Module blanking plate with the power still con nected Power Supply and Fuse The unit automatically adjusts to the supply volt age The fuse is suitable for both 110V A C and 220 240V A C operation WARNING Ensure that the power is disconnected before opening the fuse holder cover Correct fuse location Incorrect fuse location DO NOT U
145. ter of servers in a centralized location serving a wide user population SLIP Serial Line Internet Protocol A protocol which allows IP to run over a serial line connection SmartAgent Intelligent management agents in devices and logi cal connectivity systems that reduce the computa tional load on the network management station and reduce management oriented traffic on the net work SNMP Simple Network Management Protocol A protocol originally designed to be used in managing TCP IP internets SNMP is presently implemented on a wide range of computers and networking equip ment and may be used to manage many aspects of network and endstation operation Spanning Tree Protocol STP A bridge based system for providing fault tolerance on networks STP works by allowing you to imple ment parallel paths for network traffic and ensure that redundant paths are disabled when the main paths are operational and enabled if the main paths fail standby port The port in a resilient link that will take over data transmission if the main port in the link fails STP See Spanning Tree Protocol STP switch A device which filters forwards and floods frames based on the frame s destination address The switch learns the addresses associated with each switch port and builds tables based on this informa tion to be used for the switching decision TCP IP A layered set of communications protocols providing Telnet termina
146. tests If the field is set to Extended the Switch performs an Extended test which may take up to 2 minutes to complete When the Switch performs an Extended test it carries out more extensive system memory tests and ASIC memory tests in addition to the Fast Boot tests The default setting for the field is Normal CHAPTER 3 SETTING UP FOR MANAGEMENT If you suspect that there is a problem with the Switch that has not been detected by the Normal tests set this field to Extended and reset the Switch refer to Resetting the Switch 3000 FX on page 4 26 If you set the Switch to perform an Extended test the Switch must be disconnected from the rest of your network when it is powered up The Switch fails an Extended test if it receives any network traf fic during the test Device IP Address If you are using IP a unique IP address must be specified in this field If you do not know the IP address of the Switch consult your net work administrator You must reset the Switch after changing this parameter Device SubNet Mask If you are using IP enter a suitable network mask For a Class B IP address 255 255 0 0 is suitable For more information con sult your network administrator You must reset the Switch after changing this parameter Default Router If a default router exists on your network enter the IP address of the router You must reset the Switch after changing this parameter BOOTP Select Enabled Disabled If BO
147. the SuperStack II Switch en u 3000 FX is referred to as the Switch 3000 FX or Trouble shooting information Appendix C Switch Information about the pin outs relating to the Switch Appendix D 3000 FX Information about the Technical Specifications of the Appendix E Switch 3000 FX Information about the Technical Support available Appendix F from 3Com Conventions Table 1 and Table 2 list conventions that are used throughout this guide Table 1 Text Conventions Convention Description Screen This typeface represents information as it displays appears on the screen The words When you see the word enter in this guide enter you must type something and then press the and type Return or Enter key Do not press the Return or Enter key when an instruction simply says type Key names Key names appear in text in one of two ways m Referred to by their labels such as the Return key or the Escape key a Written with brackets such as Return or Esc If you must press two or more keys simulta neously the key names are linked with a plus sign Example Press Ctrl Alt Del Menu commands and buttons Menu commands or button names appear in italics Example From the Help menu select Contents Words in italicized type Italics emphasize a point or denote new terms at the place where they are defined in the text Words in bold
148. tion s MAC address 2 If the relevant port uses AutoSelect VLAN Mode the Switch refers to the VLAN Server to determine the VLAN membership of the endstation Figure 5 3 Switch refers to the VLAN Server 3 Having obtained the VLAN membership for the end station the Switch places the relevant port in the specified VLAN Port MAC Address VLAN MAC Address VLAN 1 08004e050e31 2 08004e050e31 2 MAC Address 08004e050e31 VLAN Server Figure 5 4 Switch places the port in the VLAN AutoSelect VLAN Mode has an advantage over Port VLAN Mode because once the VLAN Server data base is set up correctly you can move endstations to other ports or other Switch units and the VLAN allo cation of each endstation is automatically config ured If you use AutoSelect VLAN Mode note the follow ing m You need to specify an IP address and community string for the VLAN Server m You cannot use VLAN 15 m f a port has been configured as a backbone port or as a VLT port the port cannot use AutoSelect VLAN Mode m f a port has a permanent address stored against it in the Switch Database the port cannot use AutoSelect VLAN Mode m We recommend that you connect each switch port to a single endstation If you want to con nect a port to multiple endstations specify that the port uses Port VLAN Mode For information about how to set up VLANs using AutoSelec
149. tion 2 Redundancy through Meshed Backbone In this configuration four Switch 3000 FX units are connected such that there are multiple paths between them STP discovers the duplicate paths and disables two of the links If an enabled link breaks one of the disabled links becomes re enabled therefore maintaining connectivity Desktop Switch gt lt 2 switch 3000 Fx Cases gt Switch 3000 Fx Switch 3000 FX manaa XK uns m gt lt EE munne o gt Figure 5 12 STP configurations Enabling STP on the Switch To enable STP on your Switch From the VT100 Main Menu select SWITCH MAN AGEMENT The Switch Management screen is dis played In the Management Level field choose Unit Choose the SETUP button The Unit Setup screen is displayed as shown in Figure 5 13 In the Spanning Tree field specify Enable Choose OK You cannot enable STP if you have set up resilient links on any of the Switch ports or if you are using VLAN 16 Spanning Tree Protocol 5 17 SuperStack II Switch Unit Setup Unit Name sysName Max 36 chars PACE ULAN Configuration Mode SDB Ageing Time HH MM Spanning Tree Duplex Mode Oversize Frames Default RMON Host Matrix Plug in Module Type Transceiver Module Type Power Supply Switch 3888 Switch 3666 FX Disable Port 8 38 Enable Half Duplex Forward Enable Not Fitted Not Fi
150. tion is for internal 3Com use only You may be asked to quote With the Status screen displayed select the FAULT the Area and Fault Number if reporting a problem to your supplier LOG button The Fault Log is screen is displayed as CANCEL shown in Figure 6 6 The Fault Log screen shows the following Fig re 6 6 Fault Tag screen Reset Count The number of resets recorded at the time of the fault Time seconds The time elapsed since the last reset when the fault occurred Area This information may be used for fault diagno sis by your technical support representative Fault Number The hexadecimal number in this field indicates the type of fault You should note this number and contact your technical support repre sentative for advice 6 10 CHAPTER 6 STATUS MONITORING AND STATISTICS Remote Pol i ng SuperStack II Switch Remote Poll The Remote Poll screen allows you to send a single frame to a remote device to see if that device is Target Address E responding This can help to locate the source of a Round Trip Time no reply network problem It is also particularly helpful in locating devices that support IP IPX and ping but OS LL are not manageable by SNMP IPX address Format AABBCEDD AABBCCDDEEFF To poll a device POLL 1 From the Main Menu select Remote Poll The Remote Poll screen is displayed as shown in Figure 6 7 Figure 6 7 Remote Poll screen 2 In the Target Address fiel
151. tire network to do this you connect the 16 Switch VLANs to other VLANs using a router The Default VLAN and Moving Ports From the Default VLAN On each Switch VLAN 1 is the Default VLAN of the Switch it has two properties m It contains all the ports on a new or initialized Switch m tis the only VLAN which allows an SNMP Net work Manager to access the management agent of the unit By default if a device is attached to a port in the Default VLAN and you want to move the device into another VLAN you need to use the VLAN Setup screen to place the port in that VLAN For more information about the VLAN Setup screen refer to Setting Up VLANs on the Switch on page 5 8 Virtual LANs VLANs 5 3 Connecting VLANs to a Router If the devices in a VLAN need to talk to devices in a different VLAN each VLAN requires a connection to a router Communication between VLANs can only take place if they are all connected to the router A VLAN not connected to a router is an isolated VLAN You need one port for each VLAN connected to the router Connecting Common VLANs Between Switch Units If you want to connect the VLANs on the Switch 3000 FX with the same VLANs on another Switch unit you can set up one link per VLAN Alterna tively you can set up a single link for all the VLANs by creating a Virtual LAN Trunk VLT A VLT is a Switch to Switch link which carries traffic for all the VLANs on each Switch To set up a VLT y
152. tly connected to an endstation refer to Configuring the STP Parameters of Ports on page 5 20 Specify that the endstation entries are Non ageing refer to Setting Up the Switch Database SDB on page 4 15 Consider disabling STP on the Switch and using resilient links to provide network resilience refer to Enabling STP on the Switch on page 5 17 and Setting Up Resilient Links on page 4 18 Using the Switch C 5 You are trying to manage the Switch over a Management network which has STP and you are losing con Workstation tact with the management agent intermittently As shown in Figure C 1 there is a SuperStack II LD Switch unit Switch A between your management workstation and the Switch 3000 FX Switch B You have configured more than one VLAN on both SuperStack Il Switch Switch A Switch units and there is a parallel STP path for each VLAN between the Switch units i y Z When Switch B transmits BPDUs across a VLAN other than VLAN 1 Switch A learns the MAC address of Switch B through the port on that VLAN The management agent of Switch B is only accessible through VLAN 1 and so your manage Parallel STP Parallel STP ment workstation cannot communicate with Switch Path in VLAN 1 Path in VLAN 2 B until it transmits BPDUs across VLAN 1 When that occurs Switch A learns the MAC address of Switch B through the port on VLAN 1 Switch 3000 FX To
153. total network span of 325m 1066ft is allowed in single repeater topologies one hub stack per wiring closet with a fiber run to the collapsed backbone For example a 225m 738ft fiber downlink from a repeater to a router or switch plus a 100m 328ft UTP run from a repeater out to the endstations The Switch 3000 FX provides full duplex support for all its ports including the optional Plug in Module port but not the Transceiver Module port Full duplex allows frames to be transmitted and received simultaneously and in effect doubles the potential throughput of a link With full duplex the Ethernet topology rules are the same but the Fast Ethernet rules are m Maximum UTP cable length is 100m 328ft over category 5 cable m A 2km 6562ft fiber run is allowed for connect ing switch to switch or endstation to switch Configuration Rules with Full Duplex 2 3 le a en MAC MAC gt l zesty H Fast Ethernet Switch 100m 328ft UTP 1 Repeater 225m 738ft fiber Pareo Pr Er C Bass u LES gt Co J ob i Fast Ethernet Repeater 100m 328ft UTP Fa 2 Repeaters 5m 16ft UTP PB Bas reimse Repeater 771 100m 328ft UTP i n p A TE Fast Ethernet Repeater y 100m 328ft UTP MAC MAC Full Duplex 2km 6562ft fiber Figure 2 1 Fast Ethernet configuration rules 2 4 CHAPTER 2 INSTALLATI
154. ts standby link traffic is automatically switched back to the main link provided no loss of link is detected for two minutes Otherwise you need to manually switch traffic back to the main link When setting up resilient links you should note the following m Up to four resilient link pairs can be configured on a Switch 3000 FX m Resilient links cannot be set up if Spanning Tree STP is enabled on the Switch m Resilient links can only be set up on fiber or twisted pair links The main and standby links in the same pair however can use any combina tion of these media m A resilient link pair can only be set up if The ports belong to the same VLAN Neither of the ports forms part of another resilient link pair m If the main port is a Virtual Lan Trunk VLT port the standby port must also be a VLT port m A resilient link pair must be defined at only one end of the connection m You cannot disable any port that is part of a resil ient link pair Configuring Resilient Links With the Switch Management screen displayed choose the port to be the main port in the resilient link pair then select the RESILIENCE button The Port Resilience screen is displayed as shown in Figure 4 14 This screen allows you to setup edit and delete resilient link pairs The screen shows the following Main Port ID This read only field displays the ID of the main port Media Type Twisted Pair Fiber This read only fi
155. tted Internal Figure 5 13 Unit Setup screen CHAPTER 5 ADVANCED MANAGEMENT Configuring STP on the Switch A CAUTION You should not configure any STP parameters unless you have considerable knowl edge and experience with STP Configuring the STP Parameters of VLANs The Switch has a completely separate STP system for each VLAN that you have specified Each VLAN has its own Root Bridge Root Ports and BPDUs The VLAN STP screen allows you to set up and manage an STP system for each VLAN on the Switch To access the VLAN STP screen From the Main Menu select SWITCH MANAGE MENT The Switch Management screen is displayed In the Management Level field choose VLAN Choose the STP button The VLAN STP screen is dis played as shown in Figure 5 14 The VLAN STP screen shows the following VLAN ID 1 2 3 13 14 15 This field allows you to specify the VLAN to be configured If you are using STR you cannot use VLAN 16 Also if you are using AutoSelect VLAN Mode you cannot use VLAN 15 In these cases the relevant VLANs are used internally by the Switch and are therefore not avallable SuperStack II Switch ULAN STP ULAN ID 1 Topology Changes Designated Root Root Cost Root Port 1 Time Since Topology Change 9 Minutes 7 Seconds 5 Max Age s 26 8666 68664E 69D247 Hello Time s 2 856 Forward Delay s 15 Hold Time s 1 Refer to the User Guide before changing the sett
156. tton lets you locate an entry in the database Refer to Searching the Switch Data base on page 4 17 REFRESH This button refreshes the database so that it displays the latest information INSERT This button lets you insert an entry into the database You cannot insert an entry for a port which uses AutoSelect VLAN Mode DELETE This button allows you to delete entries from the database You cannot delete an entry if it is associated with a port which uses AutoSelect VLAN Mode Searching the Switch Database You can search the switch database in two ways by MAC address or port number By MAC Address To locate the port number against which a particular MAC address is entered in the SDB In the MAC Address field type in the MAC address you are trying to locate Select FIND The port ID is displayed in the Port Number field and the entry in the listbox is high lighted with an asterisk By Port To locate the MAC addresses entered against a par ticular port in the SDB Clear the MAC Address field by moving into the field and pressing the spacebar In the Port Number field enter the port ID for which you want MAC addresses displayed Select FIND The listbox will show entries in the database for that port only Setting Up the Switch Database SDB Adding an Entry into the SDB 1 In the MAC Address field type in the MAC address of the device In the Port Number field type in the
157. tual LANs The Switch 3000 FX has a Virtual LAN VLAN fea ture which allows you to build your network seg ments without being restricted by physical connections A VLAN is defined as a group of loca tion and topology independent devices that com municate as if they are on the same physical LAN Implementing VLANs on your network has three main advantages m lt eases the change and movement of devices on IP networks If an endstation in VLAN 1 is moved to a port in another part of the network you only need to specify that the new port is in VLAN 1 m t helps to control broadcast traffic If an endsta tion in VLAN 1 transmits a broadcast frame then only VLAN 1 devices receive the frame m lt provides extra security Devices in VLAN 1 can only communicate with devices in VLAN 2 using a router For more information about VLANs refer to Virtual LANs VLANs on page 5 1 Spanning Tree Protocol The Switch 3000 FX supports the Spanning Tree Pro tocol STP which is a bridge based system for pro viding fault tolerance on networks STP allows you to implement parallel paths for network traffic and ensure that m Redundant paths are disabled when the main paths are operational m Redundant paths are enabled if the main traffic paths fail For more information about STP refer to Spanning Tree Protocol on page 5 12 PACE The Switch 3000 FX supports PACE Priority Access Control Enabled techn
158. udit log of all management user sessions providing a record of changes to any MIB including the RMON MIB The log can only be read by users at the security access level using an SNMP Network Manager Each entry in the log contains information in the fol lowing order a Entry number m Timestamp m User ID m Item ID including qualifier m New value of item There is a limit of 16 records on the number of changes stored The oldest records are overwritten first 6 STATUS MONITORING AND STATISTICS This chapter describes how to view the current operating status of the Switch how to display any error information in a fault log and how to carry out a remote poll to check the response of another net work device It also describes the Statistics screens for the Switch and advises you on actions to take if you see unexpected values for the statistics Please note however that as all networks are different any actions listed are only suggestions Viewing statistics on a regular basis allows you to see how well your network is performing If you keep simple daily records you will see trends emerg ing and notice problems arising before they cause major network faults This way statistics can help you get the best out of your network CHAPTER 6 STATUS MONITORING AND STATISTICS Summary Statistics With the Switch Management screen displayed choose the management level Unit then select the STATISTICS button Th
159. user for accessing and editing Switch screens via the VT100 interface All access rights are read and write unless other wise stated Screen Available to Logon Monitor Manager Security Main Menu Monitor Manager Security Switch Management Monitor Manager Security Port STP Monitor read only Manager Security Port Statistics Monitor Manager Security Screen Available to Port Traffic Statistics Monitor Manager Security Port Error Analysis Monitor Manager Security Port Resilience Monitor Manager Security Port Setup Monitor read only Manager Security Unit Statistics Monitor Manager Security Unit Database View Monitor Manager Security Unit Resilience Monitor Manager Security Unit Setup Monitor read only Manager Security APPENDIX B SCREEN ACCESS RIGHTS Screen Available to VLAN STP Monitor read only Manager Security VLAN Server Monitor read only Manager Security VLAN Setup Monitor read only Manager Security User Access Levels Monitor Manager Security Local Security Security Create User Security Delete Users Security Edit User Monitor Manager Security Status Monitor Manager Security Fault Log Monitor Manager Security Management Setup Monitor read only Manager Security Screen Available to Trap Setup Monitor r
160. witch 1000 units in VLAN 2 Connect a port on each Switch 1000 to a port in the Switch 3000 FX Use the VT100 screens to a Specify that each Switch 1000 port connected to the Switch 3000 FX is a backbone port For more information about backbone ports refer to the SuperStack Il Switch 1000 User Guide b Specify that each Switch 1000 port connected to the Switch 3000 FX is a VLT port c Specify that each Switch 3000 FX port con nected to a Switch 1000 is a VLT port Connect port 1 of the Switch 3000 FX to Server 1 Connect port 2 of the Switch 3000 FX to Server 2 6 Use the VT100 screens or VLAN Server database to a Place port 1 of the Switch 3000 FX in VLAN 1 b Place port 2 of the Switch 3000 FX in VLAN 2 Connect two spare ports on the Switch 3000 FX to the router Use the VT100 screens or VLAN Server database to specify that one Switch 3000 FX port connected to the router is placed in VLAN 1 and the other is placed in VLAN 2 You can set up this configuration more easily if you use 3Com s Transcend Enterprise Manager applica tions for all the management tasks Virtual LANs VLANs 5 7 Backbone port connection for VLTs ___ Switch 1000 __Switch 1000 Switch 1000 A Connection for VLAN 1 num x Connection for VLAN 2 Server 2 in VLAN 2 Server 1 in VLAN 1 Figure 5 5 VLAN configuration with a Switch 3000 FX a
161. witch 3000 FX supports SNMP over both IP and IPX protocols Quick Start For SNMP Users This section describes how to get started if you wish to use an SNMP Network Manager to manage the Switch It assumes you are already familiar with SNMP management m f you are using IP and you have a BOOTP server set up correctly on your network the IP address for the Switch is detected automatically and you can start managing the Switch without any fur ther configuration m f you are using the IPX protocol the Switch 3000 FX is allocated an IPX address automatically You can start the SNMP Network Manager and begin managing the Switch m f you are using IP without a BOOTP server you must enter the IP address of the Switch before the SNMP network manager can communicate with the device To do this refer to Entering an IP Address for the Switch below If you need more information about IP and IPX refer to Managing Over The Network on page 3 2 Entering an IP Address for the Switch 1 Connect a terminal to the console port of the Switch 3000 FX refer to Connecting a VT100 Ter minal on page 2 7 The terminal should be config ured to 9600 line speed baud rate 8 data bits no parity and 1 stop bit 2 Press Return one or more times until the Main Banner screen is displayed Quick Start For SNMP Users 1 13 3 At the Main Banner screen press Return to dis play the Logon screen L
162. y field has a default entry If you wish to replace the default simply enter a new value for this field the default entry is erased Press Down Arrow or Return to move to the next field Text for a button is always shown in uppercase letters A button carries out an action For example OK or CANCEL To operate a button move the cursor to the button and press Return A list box allows you to select one or more items from a list There are several keys that allow you to use a list box a Return moves the cursor to the next field and actions your selections m The spacebar toggles through the options in a choice field or selects and deselects an entry in the list box List box selections will be highlighted a Down Arrow moves item by item down the list box until it reaches the end of the list At he end of the list it moves the cursor to the next field m Ctrl U moves the cursor one page up the list box m Ctrl D moves the cursor one page down the list box Keyboard Shortcuts There are several special characters or combinations of characters that allow you to make shortcuts Tab allows you to move from one field to the next on any screen without making any changes Return moves you to the next field on a form after you have made changes to the data in a field Left Arrow moves you to the previous field on the screen or the next character in an editable field Right Arrow moves you to the next

SuperStack II Switch 3000 FX User Guide

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