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3Com 10002211 Switch User Manual

1. Defining VLAN Information for a Traditional Bridge D 4 Defining VLAN Information for an HSI Switch Engine D 5 Modifying VLAN Information D 7 Removing VLAN Information D 8 TECHNICAL SUPPORT Online Technical Services E 1 World Wide Web Site E 1 3Com Bulletin Board Service _E 1 Access by Analog Modem E 2 Access by Digital Modem E 2 3ComFacts Automated Fax Service E 2 3ComForum on CompuServe Online Service E 3 Support from Your Network Supplier E 3 Support from 3Com E 4 Returning Products for Repair E 5 3COM CORPORATION LIMITED WARRANTY Overview Hardware Dependencies COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 These installation instructions and release notes describe revision 8 2 3 of the CoreBuilder 6000 Extended Switching software from 3Com Corporation dated October 9 1997 This revision supersedes revision 8 2 1 dated May 30 1997 LANplex Extended Switching software revision 8 0 0 or greater or CoreBuilder Extended Switching software revision 8 2 1 or greater requires that you have installed one of the following versions of the LANswitching Management Module Plus LMM in system slot 1 Revision 1 21 or greater for revision 1 modules Revision 2 12 or greater for revision 2 modules If you attempt to run LANplex system software 8 0 0 or greater or CoreBuilder system software 8 2 1 or greater on an earlier revision of the LMM the system fails to reboot automatically when you turn it o
2. m 5V Failure The power supply 5 volt input has failed m 12V Failure The power supply 12 volt input has failed m 5V Restored The power supply 5 volt input is restored System Issues System Issues 23 m 12V Restored The power supply 12 volt input is restored m Power Supply Over Temp One of the power supplies has exceeded the allowable temperature of 90 C 194 F SNMP Traps When you insert and extract either of the power supplies the system generates SNMP traps Hot swappable fans You can remove and replace either of the two fans at the back of the chassis Follow the safety precautions and removal instructions in the Installation Guide that comes with the new fan When you remove a fan tray the system generates a sound and the control panel displays the following message Fan Failure Insert the new fan according to the safety messages and instructions in the Installation Guide The fan begins to function as soon as you install it The system control panel displays this message Fan Restored The following system issues are identified at this release If you define a DEC VLAN and an XNS VLAN plus two other types of VLAN s that are SNA VINES X25 or NetBIOS you exhaust the system resources and the system displays an error message If the FESM diagnostic test fails on a system power up and the following error message appears you need to reboot the system FAIL Test 3 FSM FESM Powerup
3. D ADMINISTERING VLANS Removing VLAN Information Top Level Menu system ethernet fddi tokenring bridge ip ipx appletalk snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFDDIMode address Threshold aginglime stpState stpPriority stpMaxAge stpHelloTlme stpForwardDelay stpGroupAddress srBridgeNumber port packetFilter BD vlan summary detail define modify remove Follow these steps to remove a VLAN definition From the top level of the Administration Console enter bridge vlan remove Enter the slot number for the bridge Enter the indexes for the VLANs you want to remove Example Select menu option bridge vlan remove Select bridge s by slot 2 3 5 10 12 all 10 10 Select VLAN index es 1 2 all 1 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 recommend that you access 3Com Corporation s World Wide Web site Online Technical 3Com offers worldwide product support 24 hours a day 7 days a week Services through the following online systems a World Wide Web site 3Com Bulletin Board Service 3ComBBS 3ComFacts automated fax service m 3ComForum on CompuServe online service World Wide Web Site Access the latest net
4. Diag MAC Test failed B3 in slot 10 FAILED diagnostics Diagmgr Diagnostics failed for slot 10 error 2 The first line in a user defined packet filter must contain the name definition for that packet filter Example Name forward IP frames This filter line indicates that this packet filter forwards IP frames The system software does not support hot swapping of Fast Ethernet Switching Modules FESMs and FDDI Switching Modules FSMs 24 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 m 3Com recommends that you hot swap one module at a time except FESMs and FSMs as described in the previous System Issue After you hot swap one module wait until the system completes full initialization before you install another module One indication that initialization is complete is that the Administration Console prompt appears Under certain circumstances hot swapping during initialization can cause a cold system boot disrupting bridging m When the first FDDI MAC address of an FSM is assigned to the backplane FDDI ports are renumbered m A maximum of four interfaces per system may have RMON group Host or RMON group Matrix enabled A maximum of two interfaces per module can have RMON groups enabled m he ESM supports only RMON groups 1 through 4 m Packet filtering on the transmit path is not available on frames that are routed by the CoreBuilder system a Roving Analysis is not supported on a port with an assi
5. FDDI Backplane Paths m Enhanced Administration Console User Guide 3 1 9 Maintenance release continued Revision History 33 Table 2 Revision History for CoreBuilder 6000 Software continued Revision Number Description of Release 3 1 7 Maintenance release MIB support removed m he Ethernet MIB attributes requestedEnabledPaths and enabledPaths are no longer supported m The LANplex SNMP MIB traps IpBridgePortAddressLearnedEvent and IpBridgePortAddressForgottenEvent are no longer supported Bale New feature Support for SMT MIB path attribute Ring Latency 3 1 4 New features m ESM 10BASE 2 BNC media support a P advertisement address configuration support 3 1 1 New features a P routing functionality a P DDI media support a Nonvolatile data save and restore functionality 3 0 1 New feature a Baselining of Ethernet and FDDI statistics functionality 34 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Overview IP MULTICAST ROUTING This appendix describes how to set up your CoreBuilder 6000 system to use IP multicast routing Before you define any IP multicast interfaces you should have previously defined IP interfaces and routes as described in the LANplex 6000 Extended Switching User Guide This appendix includes information on how to display or configure the following parameters Enabling and disabling the Distance Vector Multicast Routing Protocol DVMRP Enabling an
6. IPX Ethertype DSAP SNAP PID AppleTalk DDP AARP Ethertype SNAP PID Xerox XNS XNS IDP XNS Address Translation XNS Compatibility Ethertype SNAP PID DECnet DEC MOP DEC Phase IV DEC LAT DEC LAVC Ethertype SNAP PID SNA SNA Services over Ethernet Ethertype Banyan VINES Banyan Ethertype DSAP SNAP PID X25 X 25 Layer 3 Ethertype NetBIOS NetBIOS DSAP Default Default all protocol types Layer 3 Addressing Information For IP VLANs only the CoreBuilder system optionally supports configuring of individual IP VLANs with network layer subnet addresses With this additional layer 3 information you can create independent IP VLANs that share the same switch ports for multiple IP VLANs Data is flooded according to both the protocol IP and the layer 3 information in the IP header to distinguish among multiple IP VLANs on the same switch port This configuration is discussed in Overlapped IP VLANs on page C 7 When you start the CoreBuilder system the system automatically creates a detault VLAN Initially the default VLAN includes all of the switch ports in the system In the CoreBuilder system the default VLAN serves to define The flood domain for protocols not supported by any VLAN in the system The flood domain for protocols supported by a VLAN in the system but received on nonmember ports Both cases represent exception flooding conditions that are described in the following sections D gt How th
7. Switching Module FESM and the Tri Media Fast Ethernet Module TMM FE You can now configure Fast Ethernet ports to support Full duplex operation Intelligent flow management IFM Full duplex operation By default FESM and TMM Fast Ethernet ports operate in half duplex mode In this mode data flows through the port in only one direction at a time When you change this operating mode to full duplex the port transmits and receives data at the same time through two separate channels 16 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Full duplex mode eliminates both the link s collision domain and the need for collision detection As a result full duplex point to point links can be much longer than half duplex links To configure a port for full duplex operation The items available on the top level menus in this section vary depending on gt your level of access and on the modules installed in your CoreBuilder 6000 chassis Top Level Menu 1 From the top level of the Administration Console enter system D ethernet summary fddi detail ae tokenrin y fasttthemet SublexMode A prompt similar to the following one appears ethernet fastEthernet duplexMode bridge ifm ip ipx label portState Select slot s 10 12 all appletalk This prompt indicates that the CoreBuilder 6000 system contains oe configurable Fast Ethernet ports in slots 10 11 and 12 script logout 2 Enter the number s of
8. an MS DOS host enter the following command at the Install file pathname prompt c 3com 1p6000R image 1p6000R Next to User name enter your user name Next to Password enter your password You must enter a value for this field although the field does not display what you enter This software installation sample shows the prompts on a UNIX host Host IP address 192 9 200 14 192 9 200 96 Install file pathname usr 1p6000R 1p6000R User name ronnyk Password Programming flash memory block 1 of 25 Programming flash memory block 2 of 25 Programming flash memory block 3 of 25 Programming flash memory block 25 of 25 8 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 User Documentation After the software is loaded this message appears Installation complete If the CoreBuilder executable software image stored in flash memory is corrupted for example when the power fails while you are updating software contact 3Com Technical Support See Appendix E To reboot the system to use the newly loaded software enter system reboot You are prompted with the following message Are you sure you want to reboot the system n y y At the prompt enter y for Yes You are now ready to configure management access for your system See the CoreBuilder 6000 Getting Started Guide This version of software is compatible with the documentation listed here Some of this documentation may be available
9. be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax Country Telephone Number Fax Number U S A and Canada 1 800 876 3266 option2 4087647120 Latin America 1 408 326 2927 408 764 7120 Europe South Africa and 44 1442 435860 44 1442 435822 Middle East Elsewhere 1 408 326 2926 1 408 764 7120 3Com Corporation LIMITED WARRANTY The duration of the warranty for the CoreBuilder 6000 Extended Switching Software 3C96270B2 is ninety 90 days HARDWARE 3Com warrants Its hardware products to be free from defects in workmanship and materials under normal SOFTWARE use and service for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller Network interface cards Lifetime Other hardware products unless otherwise specified in the warranty statement above 1 year Spare parts and spares 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 product or part has a ninety 90 day warranty or the remainder of the initial warranty period which
10. selected parameter in the Group 4 data table Group 6 Matrix Shows error and utilization data for pairs of physical addresses Group 9 Event Allows a network manager to request traps logs and alarms based on alarm events For more details on RMON functionality see Appendix B Remote Monitoring RMON Technology IP Interface Configuration Change The procedure for defining an IP interface has changed in this revision When you define an IP interface you specify several interface characteristics as well as the index for the VLAN that is associated with the interface gt You must first define a VLAN as described in Appendixes C and D before you can define an associated IP VLAN interface on an EFSM ESM TMM FESM or FSM You can define an IP interface on an LMM without first configuring a VLAN To define an IP interface Top Level Menu system 1 From the top level of the Administration Console enter ethernet fddi interface ip interface define tokenring summary F route i ia S 2 Enter the slot number of the switching module or HSI switch engine ipx dae modify whose interface you want to define appletalk rauti remove snmp e addAdvertiseme You are prompted for the interface s parameters analyzer rip removeAdvertise script i logout arctic 3 To accept the value in brackets press Return or Enter at the prompt 4 Enter the IP address of the interface Enter the subne
11. the following number 1 408 654 2703 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 Call 3ComFacts using your Touch Tone telephone using one of these international access numbers Country Telephone Number U K 44 1442 438279 U S A 1 408 727 7021 3ComForum on CompuServe Online Service Support from Your Network Supplier Local access numbers are available within the following countries Telephone Telephone Country Number Country Number Australia 1800 123 853 Netherlands 0800 0228049 Belgium 0800 71279 Norway 800 11062 Denmark 800 17319 Portugal 0505 442 607 Finland 98 001 4444 Russia Moscow only 9560815 France 0800 908158 Spain 900 964 445 Germany 0130 81 80 63 Sweden 020 792954 Italy 1678 99085 U K 0800 626403 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 To use 3ComForum Log on to your CompuServe account 2 Type go threecom Press Return to see the 3ComForum main menu If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance applicati
12. transmitted over the VLAN D 4 APPENDIX D ADMINISTERING VLANS Defining VLAN Information for a Traditional Bridge Top Level Menu system ethernet fddi display tokenring mode bridge lowLatency ip ipFragmentation ipx ipxSnapTranslation appletalk trFDDIMode snmp addressThreshold analyzer agingTime summary script stpState detail logout stpPriority define stpMaxAge modify stpHellollme MOV stpForwardDel stpGroupAddress srBridgeNumber port packetFilter vlan 1 8 Follow these steps to create a VLAN definition for a traditional bridge such as an EFSM or a TMM From the top level of the Administration Console enter bridge vlan define Enter the slot number for the bridge Enter the appropriate protocol suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default Enter the integer of the VLAN interface identifier Enter the VLAN name Enter the number s of the port s or a11 to assign all ports to the VLAN You are prompted to enter the number s of the port s that can be assigned to the VLAN If you did not choose the IP protocol suite for this VLAN you have completed the steps for defining the VLAN If you selected the IP protocol suite follow these steps Enter defined to use layer 3 subnet addressing and continue with steps 2 and 3 OR enter undefined to not use layer 3 addressing Enter the IP subnet address gt Defining VLAN Information for an H
13. 00 lowLatency disabled bufferLimit n a 14 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 What s New at Revision 8 2 0 New Features This section describes the new features software enhancements and corrections that are implemented at this release The following features have been added at this release Fast Ethernet Switching Module FESM Support The Fast Ethernet Switching Module FESM provides high function switching of traffic among Fast Ethernet workstations and subnetworks over the multigigabit high speed interconnect HSI bus of the CoreBuilder 6000 system The FESM module has two configurations Eight 100BASE TX ports that use RJ 45 connectors These ports support connections to unshielded twisted pair UTP Category 5 media Six TOOBASE FX ports that use SC connectors These ports support connections to multimode fiber media The FESM automatically learns the MAC layer addresses of workstations on attached subnetworks and forwards packets to their appropriate destinations When used with CoreBuilder Extended Switching software the FESM also supports routing between attached subnetworks In addition the FESM fully complies with the IEEE 802 1d bridging Standard The FESM requires CoreBuilder 6000 software revision 8 2 0 or greater This software in turn requires that you install one of the following LANswitching Management Module Plus LMM versions in system slot 1 Revision 1 21 or g
14. 000 Administration Console User Guide Application Oriented VLANS Using the CoreBuilder filtering capability application specitic traffic such as telnet traffic or FTP traffic can be filtered based on higher layer information You create this application oriented VLAN by configuring packet filters that specify data and offsets of the data within received packets For example to use a filter on a particular port for all telnet traffic create a filter that discards all TCP traffic received on the telnet port IP multicast routing and autocast VLANs are additional VLAN features in the CoreBuilder that can be used to group IP multicast traffic for specific applications gt CoreBuilder Protocol Sensitive VLAN Configuration About VLANs C 3 Protocol Sensitive VLANS When the CoreBuilder system receives data that has a broadcast multicast or unknown destination address it forwards the data to all ports This process is referred to as bridge flooding Protocol sensitive VLANs group one or more switch ports together for a specified network layer 3 protocol such as IP or AppleTalk These VLANs make flooding decisions based on the network layer protocol of the frame In addition for IP VLANs you can also make flooding decisions based on layer 3 subnet address information Protocol sensitive VLANs allow the restriction of flood traffic for both routable and nonroutable protocols They have a relatively simple configuration comprising
15. 12 32 129 127 110 11 32 129 127 110 5 32 129 95 63 12 32 129 95 63 11 32 129 95 63 9 32 129 95 63 8 32 129 95 63 6 32 129 95 63 2 32 129 95 48 4 32 129 95 48 3 32 129 95 48 2 32 Table A 1 describes the fields in the route display From Gateway 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 137 39 229 98 Metric Tmr In If Out Ifs 18 5 14 10 10 10 13 10 13 31 13 13 13 13 13 13 13 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 Table A 1 Field Attributes for Multicast Route Display Field Origin Subnet From Gateway Metric Tmr In If Out lf n lf and Out lf Description Displaying Routes T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 Il Il Il I1 Il Il Il Il Il I1 Il Il Il Il Il Il Il A 9 The source address and the number of bits in the subnetwork The interface address of the gateway The hop count The amount of time in seconds since the routing table entry was last reset Interface number on which that gateway is connected Traffic is expected to originate from this interface T represents the tunnel P denotes that a prune has been sent to this tunnel Set of interfaces that the traffic will be flooded out on I repre sen
16. 26 202 242 133 139 gt 128 84 247 24 128 84 247 53 128 84 247 156 gt 128 138 213 24 128 138 213 1 gt 128 206 212 24 128 206 212 69 gt 131 136 234 24 131 136 234 103 gt 138 39 25 24 138 39 25 48 gt 192 5 28 24 192 5 28 43 gt 199 94 220 24 199 94 220 184 gt 199 104 80 24 199 104 80 5 gt 132 197 248 21 132 197 248 20 gt 131 188 16 131 188 2 54 gt 149 127 16 149 127 6 181 Mcast group 224 2 0 1 2 packets 224 2 0 1 43 packets 33 packets 224 2 0 1 23 packets 224 2 0 1 8 packets 224 2 0 1 12 packets 224 2 0 1 46 packets 224 2 0 1 178 packets 224 2 0 1 10 packets 224 2 0 1 4 packets 224 2 0 1 1 packets 224 2 0 1 2492 packets 224 2 0 1 56 packets CTImr Age PTmr 7m 11m 6m 2m 36m 2m 3m 2h 2m 92s 36m 60s 3m 57m 3m 103s 4h 71s 80s 2h 48s 104s lh 72s 3m 32m 3m 4m 6m 4m 3m 5h 3m 184408 bytes 2m 5h 90s In If T1P T1P T1P T1P T1P T1P T1P T1P T1P T1P T1P T1P Out Ifs Ilp Ilp Ilp Ilp Ilp Ilp Ilp Ilp Ilp Ilp Ilp Ilp A 11 A 12 APPENDIX A IP MULTICAST ROUTING Table A 2 describes the fields in the CacheDisplay Table A 2 Field Attributes for the CacheDisplay Field Origin Mcast group CTlmr Age PT mr In If Out lf Description The source of the incoming packets Entries preceded by an angle bracket gt indicate a multicast subnetwork Entries without an angle bracket beneath subnetwork entries are multicast router
17. 8 2 3 Extended Switching software supports the following RMON FDDI extensions as specified in the AXON Enterprise specific MIB m axFDDI axFDDI group 1 m axFDDIHistory axFDDI group 2 12 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Top Level Menu system ethernet fddi tokenring bridge ip snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFddiMode address Threshold agingTime stpState stpFollowLinkState stpPriority stpMaxAge stpHelloTime stpForwardDelay stpGroupAddress srBridgeNumber port packetFilter vlan Top Level Menu script logout summary detail multicastLimit stpState stpCost stpPriority srRingNumber srHopLimit address StpMaxAye stpHellolime stpForwardDelay stpGroupAddress srBridgeNumber port packetFilter vlan Enabling and Disabling STP Transitions on linkState Changes The menu item stpFollowLinkState has been added It allows you to enable or disable Spanning Tree transitions on linkState changes The default is enabled When enabled and the link goes down stpState transitions to disabled If the link comes up Spanning Tree moves through its normal states When disabled the link state has no effect on the stpState If the link goes down the stpState remains in its current state If you are a Windows 95 client and directly connected to a CoreBuilder 6000 and running IPX
18. 86 2 377 5850 662 231 81515 43 1580170 32 2 725 0202 31 0346 586211 403 265 3266 403 423 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 33 1 69 86 68 00 420 2 21845 800 Regional Sales Office Telephone Number 3Com GmbH cont d Germany Central European HQ Hungary Poland 3Com Iberia Portugal Spain 3Com Latin America U S Headquarters Northern 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 Southern Africa 3Com Switzerland 3Com Technologies Ireland 3Com U K Ltd 49 30 34 98790 Berlin 49 89 627320 Munich 36 1 250 83 41 48 22 6451351 351 1 3404505 34 1 5096900 408 326 2093 305 261 3266 Miami Florida 541 312 3266 55 11 5181 0869 562 633 9242 57 1 629 4847 52 5 520 7841 7847 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 58 47 00 46 8 632 56 00 007 095 258 09 40 27 11 807 4397 41 31 996 14 14 353 1 820 7077 44 131 240 2900 Edinburgh 44 161 873 7717 Manchester 44 1628 897000 Marlow Returning Products for Repair E 5 Returning Products Before you send a product directly to 3Com for repair you must first for Repair obtain a Return Materials Authorization RMA number Products sent to 3Com without RMA numbers will
19. ANS ON THE COREBUILDER SYSTEM Routing Between VLANs The only way for stations that are in two different VLANs to communicate is to route between them The CoreBuilder system supports internal routing among IP IPX and AppleTalk VLANs If VLANs are configured for other routable network layer protocols they can communicate between them only via an external router The CoreBuilder routing model lets you configure routing protocol interfaces based on a VLAN defined for that protocol To assign a routing interface you must first create a VLAN for that protocol and then associate it with that interface For example to create an IP interface that can route through a VLAN Create an IP VLAN for a group of switch ports This IP VLAN does not need to contain layer 3 information unless you want to further restrict flooding according to the layer 3 subnet address Configure an IP interface with a network address subnet mask broadcast address cost and type VLAN Select an IP VLAN to bind to that IP interface If layer 3 information is provided in the IP VLAN for which you are configuring an IP interface the subnetwork portion of both addresses must be the same For Example IP VLAN subnet 157 103 54 0 with subnet mask of 255 255 255 0 IP host interface address 157 103 54 254 with subnet mask of 255 255 255 0 Layer 2 bridging communication is still possible within an IP VLAN or router interface for the group of ports with
20. COREBUILDER 6000 SOFTWARE INSTALLATION AND RELEASE NOTES CoreBuilder Extended Switching Software Revision 8 2 3 October 17 1997 Part No 10002211 Published October 9 1997 Revision 01 3Com Corporation m 5400 Bayfront Plaza m Santa Clara California m 95052 8145 Copyright 3Com Corporation 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 Corporation 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change 3Com Corporation 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 subpara
21. EMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE This Limited Warranty shall be governed by the laws of the State of California U S A 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 of liability 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 3Com Corporation 5400 Bayfront Plaza Santa Clara CA 95052 8145 408 764 5000
22. IP Multicast on the Ethernet FDDI Switching Module EFSM Support for the IBM Spanning Tree Protocol on the Token Ring Switching Module TRSM Support for configuring the Spanning Tree Protocol STP group address a Support for Token Ring and Source Routing MIBs Menu change ip forwarding to ip routing m Configuration change to enable or disable routing Support for telnet and rlogin session termination after a user specified time interval Support for 64 IP static routes on each EFSM continued 32 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Table 2 Revision History for CoreBuilder 6000 Software continued Revision Number Description of Release 6 0 0 New feature m Support for the Token Ring Switching Module TRSM 5 0 0 New features Support for LMM management module m Support for IPX Routing Support for AppleTalk Routing 4 3 0 New features m UDP Helper m PX Snap Translation Option Support for EFSM Type 1 10BASE 2 BNC module m Support for EFSM Type 2 10BASE T RJ 45 and 10BASE FL FOIRL option modules with SAS FDDI MIC ports m Support for Single Mode Fiber SMF on the FCM module m Support for the 48 volt power supply 4 1 0 New features m Support for EFSM Type 1 10 BASE T RJ 21 Telco 10BASE T RJ 45 and 10BASE FL FOIRL a Roving Analysis for Ethernet network monitoring ESM and EFSM m Support for Multiple SNMP Agents a Multistation Mode a
23. LUDING 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 GOVERNING LAW 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 PRICE PAID AT THE OPTION OF 3COM THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY R
24. MP query mode and IGMP snooping mode If an IP interface has been defined on an EFSM or a TMM module in the CoreBuilder system IGMP snooping mode is enabled by default Slots 9 12 Enter IGMP snooping mode disabled enabled enabled enabled The IP multicast interface selections allow you to enable and disable multicast characteristics on previously defined IP interfaces A multicast interface has three characteristics explained next DVMRP Metric Value The DVMRP metric value determines the cost of a multicast interface The higher the cost the less likely it is that the packets will be routed over the interface The default value is 7 Time To Live TTL Threshold The TTL threshold determines whether the interface will forward multicast packets to other switches and routers in the subnetwork If the interface TTL is greater than the packet TTL then the interface does not forward the packet The default value is 7 which means that the interface will forward all packets APPENDIX A IP MULTICAST ROUTING Displaying Multicast Interfaces Top Level Menu 1 system etherne fddi interface route arp dvmrp igmp display tokenrin multicast interfacq enable udpHelpe tunnel disable 2 routing routeDisplay icmpRouty cacheDisplay rip ping analyzer statistics script logout Rate Limit The rate limit determines how fast multicast traffic can travel over the interface in kilobytes p
25. NMP or through out of band connections The RMON specification consists almost entirely of the definition of the MIB The RMON MIB contains standard MIB variables defined to collect comprehensive network statistics that alert a network administrator to significant network events If the embedded RMON agent operates full time it collects data on the correct port when the relevant network event occurs This appendix includes the following information about RMON m Benefits of RMON m CoreBuilder RMON implementation a RMON groups m Management Information Base MIB B 2 APPENDIX B REMOTE MONITORING RMON TECHNOLOGY Benefits of RMON CoreBuilder RMON Implementation gt Traditional network management applications poll network devices such as switches bridges and routers at regular intervals from a network management console The console gathers statistics identifies trends and can highlight network events The console polls network devices constantly to determine if the network is within its normal operating conditions As network size and traffic levels grow however the network management console can become overburdened by the amount of data it must collect Frequent console polling also generates significant network traffic that itself can create problems for the network An RMON implementation offers solutions to both of these problems The RMON probe looks at the network on behalf of the network management console witho
26. OR toggle crlf Press Return or Enter to redisplay the prompt Your response should now be accepted 20 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Top Level Menu script logout summary detail multicastLimit stpState stpCost stpPriority srRingNumber srHopLimit address stpPriori StpMaxAye stpHelloTime stpForwardDelay stpGroupAddress srBridgeNumber port packetFilter vlan STP linkState Changes The inkState of a port is now a factor in determining the Spanning Tree port state This change helps prevent bridge loops when making network connections to previously inactive ports The bridge port summary and the bridge port detail screens include a new linkState column To display the bridge information From the top level of the Administration Console enter bridge port summary OR bridge port detail The system prompts you for slot number s Enter the number s of the slot s or a11 to view port parameters for all bridges in the system The system prompts you for the port type Enter Ethernet The system prompts you for port number s Enter the number s of the port s or a11 to view port parameters for all ports on the bridge Sample screen showing the display after the changes port rxFrames rxDiscards txFrames FDDI 1 0 0 0 Fast Ethernet 1 0 0 0 Ethernet 2 59243130 0 866810375 port portid fwdTransitions FDDI 1 0x8001 0 Fast Ethernet 1 0x8002 0 Et
27. SI Switch Engine Top Level Menu system ethernet fddi tokenring ipx appletalk snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFDDIMode addressThreshold aginglime stpState stpMaxAge stpHellollme stpForwardDela stpGroupAddress srBridgeNumber port packetFilter BD vlan summary detail stpPriority D define modify remove 5 Defining VLAN Information for an HSI Switch Engine D 5 Enter the subnetwork mask Example menu option bridge vlan define Select bridge s by slot 2 3 5 7 9 12 2 5 Enter Protocol Suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default IP Enter Integer VLAN Identifier 1 Enter VLAN Name SD Marketing Ports 1 2 FDDI 3 18 Ethernet Enter port s 1 18 all 1 3 5 Layer 3 Address undefined defined defined Enter IP Subnet Address 158 111 122 0 Enter subnet mask 255 255 0 0 255 255 255 0 The maximum number of VLANs you can define on a single bridge is 32 Follow these steps to create a VLAN definition From the top level of the Administration Console enter bridge vlan define Enter the slot number for the bridge Enter the appropriate protocol suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default Enter the integer of the VLAN interface identifier Enter the VLAN name Enter the number s of the port s or all to assign all ports on the bridge in the specified slot to th
28. abling DVMRP A 2 Enabling and Disabling IGMP A 2 Administering IP Multicast Interfaces A 3 DVMRP Metric Value A 3 Time To Live TTL Threshold A 3 Rate Limit A 4 Displaying Multicast Interfaces A 4 Disabling Multicast Interfaces A 5 Enabling Multicast Interfaces A 5 Administering Multicast Tunnels A 6 Displaying Multicast Tunnels A 6 Defining a Multicast Tunnel A 7 Removing a Multicast Tunnel A 8 Displaying Routes A 8 Displaying the Multicast Cache A 10 REMOTE MONITORING RMON TECHNOLOGY What Is RMON B 1 Benefits of RMON B 2 CoreBuilder RMON Implementation B 2 RMON Groups B 3 RMON FDDI Groups B 3 Statistics and axFDDI Groups B 4 History and axFDDI Groups B 5 Alarms B 5 Setting Alarm Thresholds B 6 Example of an Alarm Threshold B 6 RMON Hysteresis Mechanism B 7 Host Group B 7 HostlopN Group B 8 Matrix Group B 8 3Com Transcend RMON Agents B 8 Management Information Base MIB B 9 MIB Objects B 10 VLANS ON THE COREBUILDER SYSTEM About VLANs C 1 Types of VLANs C 1 Port Group VLANs C 2 MAC Address Group VLANS C 2 Application Oriented VLANS C 2 Protocol Sensitive VLANS C 3 CoreBuilder Protocol Sensitive VLAN Configuration C 3 Protocol Suite C 3 Layer 3 Addressing Information C 4 Default VLAN C 4 Modifying the Default VLAN C 5 How the CoreBuilder System Makes Flooding Decisions C 5 VLAN Exception Flooding C 6 Overlapped IP VLANs C 7 Routing Between VLANs C 8 ADMINISTERING VLANS Displaying VLAN Information D 1
29. age is identical to the telnet usage Simply substitute rlogin wherever you see telnet What s New at Revision 8 2 0 19 telnet Implementation When you attempt to use the telnet command to enter a system that is being used by another telnet connection the system displays Sorry this system is engaged by another telnet session Host IP address XXX XXX XXX XXX Logout the other telnet session Y N y Enter Password correctpassword The first telnet session is disconnected and the system displays LOGGING OUT the other telnet session You can then connect in the usual manner CAUTION When you preempt a telnet or rlogin session in this manner the current session user receives no notice that the session will be disconnected If you enter an incorrect password the system displays Incorrect password Disconnecting The system disconnects after it receives three incorrect attempts at the Administer level password If you respond n to the request to disconnect your session disconnects and the original connection remains established The system displays Disconnecting If you respond y at the Logout the other telnet session prompt and it is not accepted it is probably because of the telnet configuration on the UNIX host To force the system to accept your response to the prompt follow these steps Escape to the telnet session by pressing ctr1 Set the cr 1 option by entering either of these commands set crlf
30. ake 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 for hardware products may be obtained by delivering the defective product SERVICE WARRANTIES EXCLUSIVE accompanied by a copy of the dated proof of purchase to the 3Com 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 the 3Com Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to the 3Com Corporate Service Center must be preauthorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for sate shipment The repaired or replaced item will be shipped to Customer at the expense of 3Com not later than thirty 30 days after receipt of the defective product by 3Com 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 THE OPTION OF 3COM TO THE FULL EXTENT ALLOWED BY LAW THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES TERMS OR CONDITIONS EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INC
31. as proposed Entering no displays the saved configuration for you to load manually When you install software from an unreachable device using the SNMP IpsFt MIB the system reports the incorrect status statusFileNotFound rather than the correct status statusRemoteUnreachable When you install software using the SNMP IpsFt MIB and you specify an invalid Username Password pair the system reports the incorrect status statusFileNotFound rather than the correct status statusUserAuthFailed When you install software using the SNMP IpsFt MIB the installation fails unless you specify a user password If you are upgrading from system software revision 8 0 2 and you have an out of band Ethernet connection 3Com recommends you remove the out of band Ethernet connection before rebooting the system The connection may be reestablished after rebooting Under certain network conditions involving errored source routed frames it is possible for the system to reset with a panic line 55 or line 78 SNMP MIB files are shipped with the CoreBuilder 6000 system software as ASN 1 files on one of the software diskettes Copies of ASN 1 files are provided for each of the compilers described in Compiler Support The SNMP MIB file names and the currently supported version of each MIB are listed here bridge mib Bridge MIB RFC 1493 ethernet mib Ethernet MIB RFC 1398 fddiSmt7 mib FDDI SMT 7 3 MIB RFC 1512 filter mib if
32. cast tunnel Multicast Tunnel Top Level Menu 1 From the top level of the Administration Console enter system ethernet interface ip multicast tunnel remove fddi route tokenring arp bridge multicast dvmrp gmp a 2 Enter the slot s of the switching module for which you want to remove a remove interface rip udpHelp_ tunnel multicast tunnel a a routing routeDisplay 25 oe cacheDisplay Select IP stack s by slot 2 3 7 9 12 all 12 analyzer ping Pe pe 3 Enter the index number s of the interfaces associated with the tunnel you want to remove Enter multicast tunnel index 1 2 The tunnel is removed Displaying Routes To display all available routes in the IP multicast routing table Top Level Menu 1 From top level of the Administration Console enter system ethernet interface ip multicast routeDisplay fddi dvmrp ee ae nee 2 Enter the slot s of the switching module for which you want to view IP dip udpHelp tunnel multicast routes ipx routing routeDisplay ay A ai Select IP stack s by slot 2 3 7 9 12 all 12 analyzer ping A statistics 3 The DVMRP and IGMP status appear on the screen Slots 9 12 DVMRP is disabled IGMP snooping is enabled The following display shows all available multicast routes Multicast Routing Table 2598 entries Origin Subnet 157 88 29 1 32 137 39 2 254 32 131 215 125 236 32 130 118 106 254 32 129 127 118 12 32 129 127 110
33. col including IP IPX AppleTalk XNS DECnet X 25 Layer 3 SNA Banyan VINES and NetBIOS This release allows you to overlap VLANs by supporting multiple protocols per port multiple subnetworks per port and the spanning of Layer 3 networks across multiple ports You can also use an external router to communicate between VLANs New menus have been added to the Administration Console menu so that you can administer protocol based VLANs on the CoreBuilder 6000 system These menus allow you to Display summary or detailed information on VLANs Define or modify a VLAN definition Delete a VLAN definition For more details on VLAN functionality in the CoreBuilder 6000 system see Appendix C VLANs on the CoreBuilder System and Appendix D Administering VLANs Support for Seven RMON Data Groups Revision 8 2 3 Extended Switching software supports the following RMON data groups Group 1 Statistics Maintains utilization and error statistics for the monitored segment 10 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Group 2 History Stores periodic statistical samples of Group 1 data for later retrieval Group 3 Alarm Allows a network manager to set sampling intervals and alarm thresholds for any MIB counter or integer Group 4 Host Maintains counters of traffic to and from hosts attached to a subnetwork Group 5 HostTopN Reports on hosts that top a list that was sorted on a
34. d disabling the Internet Group Membership Protocol IGMP Administering IP multicast interfaces Administering multicast tunnels Route display Cache display A 2 APPENDIX A IP MULTICAST ROUTING Enabling and Disabling DVMRP Top Level Menu system ethernet fddi tokenring interface route dvmrp i arp igmp bridge Ip multicast interfaces Pip udpHelper tunnel ipx routing routeDisplay appletalk icmpRoute cacheDisplay 2 snmp analyzer script logout rip ping statistics 3 Enabling and Disabling IGMP DVMRP is the simple Distance Vector Multicast Routing Protocol similar to the IP Routing Information Protocol Multicast routers exchange distance vector updates that contain lists of destinations and the distance in hops to each destination The routers maintain this information in a routing table To run multicast routing you must enable DVMRP which enables it on all IP interfaces that have not been disabled To enable or disable DVMRP from the top level of the Administration Console enter ip multicast dvmrp Enter the slot of the switching module for which you want to enable DVMRP Select IP stack s by slot 2 3 7 9 12 all 12 The interface prompts you to enable or disable DVMRP The default is disabled Slots 9 12 Enter DVMRP mode disabled enabled disabled enabled IGMP enables a router or switch to determine whether group members exist in a subnetwork or leaf
35. e CoreBuilder System Makes Flooding Decisions About VLANs C 5 Modifying the Default VLAN New switch ports can dynamically appear in the CoreBuilder system if you insert a new switching module FESM FSM When a new switch port that is not part of a default VLAN appears in the system at initialization the system software adds that switch port to the first default VLAN defined in the system CoreBuilder VLANs also allow you to modify the initial default VLAN to form two or more subsets of switch ports If you remove the default VLAN and no other VLANs are defined for the system no flooding of traffic can occur Protocol sensitive VLANs directly affect how the CoreBuilder system performs flooding Without protocol sensitive VLANs the flooding process is to forward data to all switch ports in the system With protocol sensitive VLANs the flooding process follows this model As a frame is received that needs to be flooded it is decoded to determine its protocol type If a VLAN exists for that protocol in the CoreBuilder system and the frame s source port is a member of the VLAN the frame is flooded according to the group of ports assigned to that VLAN If a VLAN exists for that protocol in the CoreBuilder system but the frame s source port is not a member of the VLAN definition then the frame is flooded according to the default VLAN assigned to that port If the protocol type of the received frame has no VLAN defined for it in
36. e Internet s multicast backbone and multicast routing is enabled configure a maximum of 3 slots for multicast routing When you use the Administration Console to display all instances of a given MAC address in a mixed token ring and Ethernet environment use the find command for both the noncanonical and canonical formats ESMs do not support IGMP snooping To avoid unwanted traffic filter IP multicast traffic with a packet filter The Ethernet Switching Module ESM and the Token Ring Switching Module TRSM incorrectly report transmit filter statistics The ESM and TRSM FDDI packet filters cannot access packet data beyond byte 16 in a packet VLAN statistics are not supported on the ESM 26 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Known Problems The following software problems are identified at this release To compile lov2 mib with a version 2 compiler perform these steps In the IMPORTS section add RowStatus FROM SNMPv2 TC A few lines below add the following RowStatus comment RowStatus INTEGER 1 6 The new IMPORTS section now looks like this LANPLEX SYSTEMS MIB 1 4 1 DEFINITIONS BEGIN IMPORTS enterprises Counter Gauge IpAddress FROM RFC1155 SMI DisplayString FROM RFC1213 MIB OBJECT TYPE FROM RFC 1212 Rowstatus FROM SNMPv2 TC TRAP TYPE FROM RFC 1215 Textual conventions RowStatus as defined in SNMPv2 Refer to rfcl443 txt for concise definition This
37. e VLAN You are prompted to enter the number s of the port s that can be assigned to the VLAN APPENDIX D ADMINISTERING VLANS 10 gt If you did not choose the IP protocol suite for this VLAN you have completed the steps for defining the VLAN If you have selected the IP protocol suite and want to use the Layer 3 address information enter defined for layer 3 addressing Enter undefined if you do not want layer 3 addressing If you selected the IP protocol suite follow these steps Enter defined to use layer 3 subnet addressing and continue with steps 2 and 3 OR enter undefined to not use layer 3 addressing Enter the IP subnet address Enter the subnetwork mask Example Select menu option bridge vlan define Select bridge s by slot 2 3 5 10 12 2 3 5 10 12 9 Enter Protocol Suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default IP Enter Integer VLAN Identifier 7 Enter VLAN Name SD Marketing Slot 10 Ports 1 2 FDDI Slot 11 Ports 3 10 Fast Ethernet Slot 12 Ports 11 16 Fast Ethernet Enter port s 1 16 all 1 5 11 Layer 3 Address undefined defined defined Enter IP Subnet Address 158 111 122 0 Enter subnet mask 255 255 0 0 255 255 255 0 The three modules in slot 10 11 and 12 form a single bridge so you are prompted for ports on all three modules Modifying VLAN Information D 7 Modifying VLAN To modify VLAN information for a traditional bridge Information Top Level M
38. embedded RMON probe Fast Ethernet ports Management m A T console LI C LJ LI d 7 A Cay Figure B 2 Embedded RMON Implemented on the CoreBuilder System A MIB is a structured set of data that describes the way the network is functioning The management software known as the agent gains access to this set of data and extracts the information it needs The agent can also store data in the MIB The organization of a MIB allows a Simple Network Management Protocol SNMP network management package such as the Transcend Enterprise Manager application suite to manage a network device without a specific description of that device 3Com ships SNMP MIB files with CoreBuilder Extended Switching System software as ASN 1 files APPENDIX B REMOTE MONITORING RMON TECHNOLOGY MIB Objects The data in the MIB consists of objects that represent features of the equipment that an agent can control and manage Examples of objects in the MIB include a port that you can enable or disable and a counter that you can read A counter is a common type of MIB object used by RMON A counter object might record the number of frames transmitted onto the network The MIB might contain an entry for the counter object something like the one in Figure B 3 for the counter object etherStatsPkts OBJECT TYPE S YNTAX Counter ACCESS read only STATUS mandatory DESCRIPTION This is a total number of packets recei
39. enu 1 From the top level of the Administration Console enter system l ethernet bridge vlan modify display mode You are prompted to reenter the information that defines the VLAN Pbridge lowtateny Press the Return or Enter key to accept any value that appears in ip ipFragmentation ipx ipxSnapTranslation brackets if appletalk trFDDIMode snmp addressThreshold analyzer agingTime Enter the slot number for the bridge script stpState satay logout stpPriority detail stpMaxAge define 3 Enter the number of the VLAN interface index stpHelloTime P modify stpForwardDelay remove stpGroupAddress 4 Enter the protocol suite for that VLAN IP IPX Apple XNS srBridgeNumber aa DECnet SNA Vines X 25 NetBIOS default packetFilter vian 5 Enter the VLAN identifier 6 Enter the VLAN name 7 Enter the number s of the port s or all 8 If you have selected the IP protocol suite and want to use the Layer 3 address information enter defined for layer 3 addressing Enter undefined if you do not want layer 3 addressing Example Select menu option bridge vlan modify Select bridge s by slot 2 3 5 10 12 10 10 Select VLAN interface 1 2 2 Protocol Suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default IP Integer VLAN Identifier 1 2 VLAN Name Sales Ports 1 FDDI 2 17 FastEthernet Enter port s 1 17 all 1 5 Layer 3 Address undefined defined undefined APPENDIX
40. er second Multicast traffic may not exceed this rate limit or the CoreBuilder system will drop packets in order to maintain the set rate The default is set to 0 which implies no rate limit In all other instances the lower the rate limit the more limited the traffic over the interface To display a multicast interface From the top level of the Administration Console enter ip multicast interface display Enter the slot of the switching module from which you want to display a multicast interface Select IP stack s by slot 2 3 7 9 12 all 12 Enter the index numbers of the interfaces you want to display Example multicast interface configuration for the slot Index Local Address Metric Threshold RateLimit State 1 loge IOl lee 1 1 O queries pkts in 0 pkts out s0 Bort 3 peers 158 101 112 204 3 6 0x8e 158 101 112 202 346 U0X4f port 3 groups 224 2 127 255 3 6 Ox8e 224 2 143 24 port 4 groups 224 2 143 24 224 2 127 225 Administering IP Multicast Interfaces A 5 Disabling Multicast To disable multicast routing on an interface Interfaces Top Level Menu 1 From the top level of the Administration Console enter aul here ip multicast interface disable fddi route dvmrp dsl j j isplay bridge Wmuticast binend erle 2 Enter the slot s of the switching module for which you want to disable a Pip udpHelpe tunnel Pds2ble Multicast interface ipx routing routeDisplay appletal i cacheDis
41. ese ports Intelligent Flow Management IFM Intelligent flow management IFM is a congestion control mechanism that is built into the CoreBuilder system You should implement IFM on any Fast Ethernet port that has a high volume of traffic By default IFM is enabled on CoreBuilder module ports Congestion is caused when one or more devices send traffic to an already congested port If the port is connected to another CoreBuilder system or to an end station IFM minimizes packet loss and inhibits the sending device from generating more packets until the congestion ends Intelligent flow management is supported only on half duplex ports It is disabled on port that are configured for full duplex mode 3Com recommends that you disable IFM on network segments that are connected to repeaters To apply IFM to a half duplex Fast Ethernet port From the top level of the Administration Console enter ethernet fastEthernet ifm A prompt similar to the following one appears Select slot s 10 12 all This prompt indicates that the CoreBuilder 6000 system contains configurable Fast Ethernet ports in slots 10 11 and 12 Enter the number s of the slot s that contain ports that you want to set to IFM mode 10 12 To select the default al press Return 18 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Default Default gt For each slot that you enter the system asks for specific port numbers Select Ethernet
42. ever 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 3Com warrants that the software programs licensed from it will perform in substantial conformance to the STANDARD WARRANTY 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 The sole obligation of 3Com with respect to this express warranty shall be at the discretion of 3Com 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 applicable 3Com 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 the 3Com software product documentation or specifications as being compatible 3Com will m
43. file for file size and checksum information Copying to the MS DOS Platform The CoreBuilder software for an MS DOS system is distributed on four diskettes Install the software using the Windows 95 or Windows NT operating system 3Com recommends that you close all Windows programs before running this Setup program 6 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Loading System Software on the LMM D gt gt gt Installing on a Windows 95 or Windows NT Computer To copy software to an MS DOS host computer s hard disk using Windows 95 or Windows NT take these steps Insert diskette 1 into a disk drive These instructions assume drive a For Windows 95 click the Windows 95 START button and choose Run OR For Windows NT from the File menu select Run The system displays the Setup screen with the system software name and the Setup dialog box At the command line in the Setup dialog box enter a setup and click OK A Welcome screen appears The system prompts you to continue or to cancel the installation To continue click Next To cancel the installation and exit the Setup program click Cancel The Install Shield Wizard guides you through the rest of the installation procedure This procedure creates a file folder c 3com 1p6000R which contains IMAGE folder MIBS folder README text Before loading the system software on the LMM verify that the host computer which has a copy of the u
44. for CoreBuilder 6000 Software Revision Number S21 8 23 8 2 0 8 0 2 8 0 1 continued Description of Release New features Software support for protocol based VLANs Support for seven RMON data groups IP interface configuration change Routing on FESM Modules Additional RMON MIB support RMON support for FDDI switched ports New features Fast Ethernet Switching Module FESM support FESM and FSM Switch Engine Ability to administer Fast Ethernet Ports Bridge MIB support for the FESM Filter MIB support FTP packet filter program transfers via SNMP Disconnecting an active telnet or rlogin session STP linkState changes CoreBuilder 6000 12 slot Chassis Updated system diagnostics New feature Support for IP routing on the FDDI Switching Module FSM Revision History 31 Table 2 Revision History for CoreBuilder 6000 Software continued Revision Number Description of Release 8 0 0 New features m Support for the FDDI Switching Module FSM m Support for the EFSM TP DDI Module m Support for RMON RMON MIB support added a State field added to interface display m System menu item upTime added New FDDI MAC statistic rxErrors a New fields added to FDDI MAC summary and detail displays a Configurable Source Route hop count limit a LANplex MIB support updates Bridge MIB support added for the FSM a New If MIB added 7 0 0 New features Support for the Tri Media Module TMM Support for
45. gned IP router interface m Roving Analysis is not supported on the FESM a A Roving Analysis frame over a remote TMM FE connection is truncated if the frame is greater than 1495 bytes m When configuring Roving Analysis on an ESM the system accepts an unknown MAC address as the analyzer port a Bridging performance and routing performance are degraded on a Roving Analysis monitor port or if RMON Host or Matrix groups are configured m EFSM packet filters can access packet data through byte 64 in packet m A maximum of 254 unique RMON Owner descriptions etherStatsOwner historyControlOwner alarmOwner and eventOwner can be configured m When you install revision 8 2 0 of CoreBuilder 6000 Intelligent Switching software on a LMM that is running revision 8 2 3 Extended Switching software and you have defined non IP VLANs you must reset NVRAM immediately after installing the 8 2 0 Intelligent Switching software into flash memory Immediately after the Console displays the message Installation complete enter this command system nvdata reset System Issues 25 If you attempt to run CoreBuilder 6000 system software revision 8 2 3 on an LMM at revision 2 11 or earlier the system fails to reboot when you turn it on See Hardware Dependencies on page 1 You can configure a maximum total of 100 routing interfaces for all switching modules in a single CoreBuilder 6000 system When your system is connected to the MBONE th
46. graph c 1 ii for restricted Rights in Technical Data and Computer Software clause at 48 C F R 52 227 7013 3Com Corporation 5400 Bayfront Plaza Santa Clara California 95052 8145 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 s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com the 3Com logo LANplex and Transcend are registered trademarks of 3Com Corporation CoreBuilder is a trademark of the 3Com Corporation 3ComFacts is a service mark of 3Com Corporation AppleTalk is a registered trademark of Apple Computer Corporation VINES is a registered trademark of Banyan Systems Inc DECnet is a trademark of Digital Equipment Corporation HP and OpenView are registered trademarks of Hewlett Packard Corporation SunNet Manager is a trademark of Sun Microsystems Inc MS DOS Windows 95 and Windows NT are registered trademarks of Microsoft Corporation UNIX is a registered trademark in the United States and other countries licensed exclusively through X Open Company Ltd Other brand and product name
47. hernet 2 0x8003 0 port stp linkState state FDDI 1 enabled n a forwarding Fast Ethernet 1 enabled down disabled Ethernet 2 enabled up forwarding What s New at Revision 8 2 0 21 Note these additional items a The linkState up or down settings apply to Ethernet and Fast Ethernet ports not to FDDI ports and only when the stpState for the bridge is enabled If the stpState on the Bridge menu is disabled the State for the port remains in forwarding state a When the bridge port is in the Removed state the State remains in forwarding state a If STP is disabled on an individual port the State remains disabled Table 1 describes the port states and how they relate to the linkState This table is valid only when the stpState for the bridge is enabled Table 1 Port States When stpState Is Enabled If STP is and linkState is Then Port State is enabled up blocking or forwarding enabled down disabled disabled up disabled disabled down disabled removed up forwarding removed down forwarding The Port State is either blocking or forwarding The final state depends on the Spanning Tree configuration of the network CoreBuilder 6000 12 Slot Chassis The CoreBuilder 6000 12 slot chassis is the latest generation of the CoreBuilder 6000 chassis This chassis and the 8 2 3 software release allow you to remove and replace the power supplies and fan trays in case of failure Hot swappable Power Supplies The LED on each power suppl
48. in that IP Intertace s IP VLAN IP data destined for a different IP subnetwork uses the IP routing interface to get to that different subnetwork even if the destination subnetwork is on a shared port Displaying VLAN Information Top Level Menu system ethernet fddi ipx appletal snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFDDIMode addressThreshold aginglime stpState stpPriority stpMaxAge stpHelloTlme stpForwardDelay stpGroupAddress srBridgeNumber port packetFilter vlan summary detail define modify remove ADMINISTERING VLANS This appendix describes how to display information about VLANs and how to configure VLANs Through the Administration Console you can Display summary or detailed information on VLANs Define or modify a VLAN definition for a traditional bridge or a highspeed switching engine Delete a VLAN definition You can display a summary of VLAN information or a detailed report When you display a summary you receive information about the protocols and ports assigned to each VLAN plus the layer 3 addresses used to manage flood domains for overlapping IP subnetworks The detailed VLAN report includes the summary information plus additional utilization statistics From the top level of the Administration Console enter bridge vlan summary or bridge vlan detail The VLAN information is displayed in the format you
49. information to IP VLANs This capability allows network administrators to manage their VLANs by subnetwork Flooding decisions are made by first matching the incoming frame using the protocol IP and then matching it with layer 3 subnetwork information If received data is IP but does not match any defined IP subnetwork VLAN it is flooded within all IP VLANs using the relevant switch port For example two IP VLANs can be configured for ports 1 10 as follows IP VLAN 1 subnet 158 101 112 0 ports 1 10 IP VLAN 2 subnet 158 101 113 0 ports 1 10 This example shows how flooding decisions are made using overlapping IP VLANs assuming a 12 port switch Network Index VLAN Address Mask Ports 1 Default none 1 12 2 IP 158 103 122 0 1 6 255 255 255 0 3 IP 158 103 123 0 6 12 255 255 255 0 Data received on Is flooded on Because IP subnet VLAN 2 IP network layer matches layer 3 address for 158 103 122 2 VLAN 2 on port 6 IP subnet VLAN 3 IP network layer matches layer 3 address for 158 103 123 2 VLAN 3 on port 6 IP subnet VLAN 2 and IP network layer does not match any layer 3 158 103 124 2 VLAN 3 address for IP VLANs on port 6 IPX on port 6 VLAN 1 IPX frame does not match any defined VLAN As shown in this example when the subnet address of an IP packet does not match any subnet address of any defined IP VLAN in the system it is flooded to all of the IP VLANs that share the source switch port in this case port 6 C 8 APPENDIX C VL
50. interfaces In the following example the FDDI and the Ethernet interfaces both have class B IP addresses and both have the same subnet mask FDDI interface 158 101 101 1 Subnet mask 255 255 0 0 Ethernet interface 158 101 20 1 Subnet mask 255 255 0 0 Do not assign different subnet masks to these interfaces such as 255 255 255 0 and 255 255 0 0 if they have the same class of IP address Changing the port speed or port mode before setting a system baseline on the TRSM can cause incorrect Token Ring port and bridge port statistics Some bridge port statistics are not counted on the TRSM s Token Ring ports The following statistics report 0 in the bridge port display for Token Ring ports on the TRSM rxDiscard rxFloodUcasts rxForwardMcasts and rxForwardUcasts When running large scripts you can receive the following message after the script is complete Received ftpCommand Quit not completed errno 421 To be sure that the script has run successfully verify that the last two commands in the script have run successfully 28 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 SNMP MIB Files Supported Versions Performing a manual nvdata restore restores configurations to slots even if the configurations have been specified not to restore When you restore NV data the system proposes a method of restoration based on restoration rules You are prompted to load the proposal Entering yes restores the system NV data
51. ions You can use several types of VLANs to group users These types include Port group VLANs MAC address group VLANs Application oriented VLANs Protocol sensitive VLANs APPENDIX C VLANS ON THE COREBUILDER SYSTEM Port Group VLANs Port group VLANs group together one or more switch ports This simple implementation of VLANs requires little configuration All frames received on a port are grouped together For example all frames received on a port that is part of a port group are kept within that port group regardless of the data contained in the frames Port groups are useful when traffic patterns are known to be directly associated with particular ports They can benefit the user by restricting traffic based on a set of simple rules MAC Address Group VLANS VLANs allow a switch to make filtering decisions based on grouping MAC addresses together These MAC address groups can be configured so that stations in the group can only communicate with each other or with specific network resources This solution is good for security It allows the VLAN association to move with the station However MAC address grouped VLANs may require complex configuration in comparison to other types of VLANs Port group and MAC address group VLANs are supported using the packet filtering capabilities in the CoreBuilder system For information on port group and MAC address group filtering refer to your CoreBuilder 6000 Operation Guide and CoreBuilder 6
52. is a place holder until lp mib is fully compliant with SNMPv2 RowStatus INTEGER 1 6 Do not create port groups and port group filters on the FESM or FSM The FESM and TMM FE rxFrames txFrames rxBytes and txBytes statistics can report inaccurate values The FESM FDDI MAC rxFrames txFrames rxBytes and txBytes statistics can report inaccurate values CoreBuilder 6000 system software does not route FDDI multicast frames that are larger than 1500 bytes that is frames that require fragmentation The NVRAM conversion for SNMP traps does not adjust correctly after you install CoreBuilder software revision 8 2 3 Verify that the appropriate traps are enabled Known Problems 27 Roving Analysis cannot monitor outgoing routed packets FCS error statistics report inaccurate values on the TMM FE s port You cannot modify the port specification of an IP interface that is defined on the LMM module To modify the port specification remove the IP interface and define it again An NVDATA save procedure fails if it occurs at the same instant that a MAC address is learned or aged out of the slot s MAC address table If both the Ethernet and the FDDI interfaces have the same class of IP address their subnet masks must be the same even though the Administration Console allows you to enter different subnet masks for these interfaces If you enter different subnet masks the system fails when you attempt to remove one of the
53. it State ik Loot lola ead Lo Sedad 45 70 Z 200 500 PKES ini320069 pkts out 0 peers 137 39 229 98 3 8 Oxe Administering Multicast Tunnels A 7 Defining a To define a multicast tunnel Multicast Tunnel 1 From the top level of the Administration Console enter Top Level Menu ip multicast tunnel define system interface ethernet route dvmrp h fddi ap igmp display 2 Enter the slot s of the switching module for which you want to define a tokenringly multicas interface define multicast tunnel an udpHelp P tunnel remove i IP routing routeDispiay ipx j j i appletak re PY 3 Enter the index number s of the interface s with which you want to mp sping associate a multicast tunnel analyzer Statistics script weet 4 Enter the IP address of the destination multicast router gt The IP address of the destination multicast router must be a remote address The destination router cannot be directly connected to the same subnetworks as the local IP address 5 Enter the DVMRP metric value of the tunnel 6 Enter the Time To Live TTL threshold of the tunnel 7 Enter the rate limit of the tunnel Example Select IP stack by slot 2 3 7 9 12 all 9 Enter an IP interface index 1 2 Enter remote IP address 192 9 200 40 Enter tunnel DVMRP metric 1 1 Enter tunnel TTL threshold 1 Enter tunnel rate limit 0 A 8 APPENDIX A IP MULTICAST ROUTING Removing a__ To remove an IP multi
54. itted from the source address to the destination address Number of octets excluding errors transmitted from the source address to the destination address Number of bad packets transmitted from source to destination RMON requires one probe per LAN segment Because a segment is a portion of the LAN separated by a bridge or router the cost of implementing many probes in a large network can be high To solve this problem 3Com has built an inexpensive RMON probe into the Transcend SmartAgent software in each CoreBuilder 6000 system This probe allows you to deploy RMON widely around the network at a cost of no more than that for traditional network monitors Placing probe functionality inside the CoreBuilder 6000 system has these advantages m You can integrate RMON with normal device management m The CoreBuilder system can manage conditions proactively Management Information Base MIB Management Information Base MIB B 9 The CoreBuilder system associates statistics with individual ports and then takes action based on these statistics For example the system can generate a log event and send an RMON trap if errors on a port exceed a user set threshold You must assign an IP address to the CoreBuilder system to manage RMON See the CoreBuilder 6000 Administration Console User Guide for information on how to assign an IP address Figure B 2 shows an example of the CoreBuilder RMON implementation LAN FESM module with
55. mib If MIB RFC 1573 IpsFt mib Compiler Support SNMP MIB Files 29 lp mib LANplex Systems MIB version 1 3 0 lpOpFddi mib LANplex Optional FDDI MIB version 1 2 1 mib2 mib MIB II RFC 1213 rmon mib RMON MIB RFC 1757 srbridge mib Source Routing MIB RFC1525 vian mib LANplex VLAN MIB ASN 1 MIB files are provided for each of the MIB compilers in this list Any warnings or exceptions related to a compiler are listed with it SMIC version 1 0 9 MOSY version 7 1 For the MIB file pDOpFddi mib the MOSY compiler reports warnings for counter names that do not end in s This report has no effect on the output produced by the MOSY compiler HP Openview version 3 1 mib2schema with SunNet Manager version 2 0 The MIB file fddiSmt7 mib produces the following warning messages when the file is compiled using mib2schema Translating Warning The following INDEX entries in fddimibMACCountersTable not resolved fddimibMACSMTIndex ddimibMAC Index Translation Complete Schema file in fddiSmt7 mib schema Oid file in fddiSmt7 mib oid These warning messages have no effect on the ability of SunNet Manager to use the schema file generated with SunNet Manager versions 2 0 or later 30 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Revision History Table 2 describes the previous releases of the CoreBuilder 6000 Extended Switching software Table 2 Revision History
56. n To reboot a system that has failed to reboot automatically connect a terminal to the serial port on the LMM installed in the system When the system prompt asks whether you want to ignore the checksum error enter y for Yes The system reboots Upgrading Your LMM or LMM To verify that you have an LMM module and not an LMM module installed Check that the module s ejector tab is labeled LMM Determine the revision of your LMM From the top level of the Administration Console enter system display 2 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Extended Switching Software Requirement Release Highlights for 8 2 3 Release Highlights for 8 2 0 If you have an LMM at a revision earlier than 1 21 for revision 1 modules or 2 12 for revision 2 modules call 3Com at 1 800 876 3266 and press option 2 3Com will replace your LMM with an LMM at the correct revision free of charge Contact 3Com at the same number to upgrade an LMM to an LMM There is a fee for this upgrade Release 8 0 0 or greater of Extended Switching Software requires a minimum of 2 MB of memory on Ethernet FDDI Switching Modules EFSMs Memory configuration may vary If you have an EFSM with 1 MB of memory you can order a memory upgrade Contact your sales representative To determine the amount of memory on the EFSM look at the lower ejector tab label or use the system display command from the top level of the Admini
57. ndersized but otherwise well formed packets Number of received oversized but otherwise well formed packets Number of received undersized packets with either a CRC or an alignment error Number of detected transmit collisions Byte sizes include the 4 byte FCS but exclude the framing bits The number of the packet length counters is shown in Table B 3 Table B 3 Supported Ethernet and FDDI Frame Size Buckets Ethernet FDDI 64byteframes 22orfewer t 65 to 127 23 to 63 64 to 127 128 to 511 128 to 511 512 to 1023 512 to 1023 1024 to 1518 1024 to 2047 2048 to 4095 History and axFDDI Groups Alarms RMON Groups B 5 The History group records periodic statistical samples trom the network and stores them for retrieval at another time The information available per interface for each time interval includes Number of received octets Number of received packets Number of received broadcast packets Number of received multicast packets Number of received packets with CRC or alignment errors Number of received undersized but otherwise well formed packets Number of received oversized but otherwise well formed packets Number of received undersized packets with either a CRC or an alignment error Number of detected transmit collisions Estimate of the mean physical layer network utilization The CoreBuilder 6000 system supports the following syntax for alarms Counters Gauges Integers Timeticks These mechanisms
58. ng below the low threshold In Figure B 1 for example an alarm occurs the first time the counter exceeds the high threshold but not at the second time At the first instance the counter is rising from below the low threshold while in the second instance it is not The Host Group records statistics for each host denoted by the host s physical MAC address detected on the network The information available trom this group for each discovered host includes Number of received packets Number of transmitted packets Number of received octets Number of transmitted octets Number of transmitted broadcast packets Number of transmitted multicast packets hostTimeTable that provides all these statistics in a format indexed by the relative order in which the host was discovered Host Group adds new hosts to the end of this table B 8 APPENDIX B REMOTE MONITORING RMON TECHNOLOGY HostTopN Group Matrix Group 3Com Transcend RMON Agents The HostTopN group prepares reports describing hosts that top a list ordered by one of their statistics Information from this group includes Number of received packets Number of transmitted packets Number of received octets Number of transmitted octets Number of transmitted broadcast packets Number of transmitted multicast packets The Matrix group records statistics on conversations between sets of addresses The information available from this group includes Number of packets transm
59. of the Spanning Tree It uses two search methods to make this determination Query mode The router or switch with the lowest IP address in the LAN broadcasts a query to all other members of the subnetwork to determine whether they are also in the group End stations respond to the query with IGMP packets which report the multicast group to which they belong Snooping mode A router or switch performs dynamic multicast filtering based on IGMP snooping This procedure ensures that multicast packets are flooded only to the appropriate ports within a routing interface Top Level Menu system ethernet interface fddi route dvrmp tokenring arp Digmp bridge multicast interface dip udpHelper tunnel ipx routing routeDisplay appletalk icmpRouter cacheDisplay snmp rip analyzer ping script statistics logout Administering IP Multicast Interfaces 1 Administering IP Multicast Interfaces A 3 When you select the IGMP option the interface prompts you to enable or disable IGMP snooping mode and IGMP query mode Both are enabled by default Under most conditions IGMP snooping mode and IGMP query mode should remain enabled To enable or disable IGMP from the top level of the Administration Console enter ip multicast igmp Enter the slot of the switching module for which you want to enable IGMP Select IP stack s by slot 2 3 7 9 12 all 12 The interface prompts you to enable or disable IG
60. on CD ROM These release notes describe any changes and additions to this documentation CoreBuilder 6000 Getting Started Guide CoreBuilder 6000 Control Panel User Guide CoreBuilder 6000 Operation Guide Corebuilder 6000 Administration Console User Guide CoreBuilder 6000 Command Quick Reference folded card LANplex 6000 Extended Switching User Guide The Extended Switching User Guide is shipped with Extended Switching software Individual modules are shipped with their installation guides LMM LANswitching Management Module Installation Guide FCM FDDI Concentrator Module Installation Guide EFSM Ethernet FDDI Switching Module Installation Guide TRSM Token Ring Switching Module Installation Guide TMM Fast Ethernet Tri Media Module Installation Guide What s New at Revision 8 2 3 New Features What s New at Revision 8 2 3 9 FDDI Switching Module FSM Guide Fast Ethernet Switching Module FESM Guide In addition Filter Builder software and the Filter Builder Getting Started Guide are shipped with CoreBuilder 6000 Extended Switching software This section describes the new features software enhancements and corrections implemented at this release The following new features have been added at this release Software Support for Protocol based VLANs Revision 8 2 3 offers support for protocol based VLANs on the CoreBuilder 6000 system Protocol based VLANs allow you to define VLANs based on the network proto
61. on training and support services When you contact your network supplier for assistance have the following information ready a A list of system hardware and software including revision levels a 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 E 4 APPENDIX E TECHNICAL SUPPORT Support from 3Com If you are unable to receive support from your network supplier technical support contracts are available from 3Com Regional Sales Office 3Com Corporation P O Box 58145 5400 Bayfront Plaza Santa Clara California 95052 8145 U S A 3Com Asia Limited Australia Hong Kong India Indonesia Japan Korea Malaysia New Zealand Philippines P R of China Singapore Taiwan R O C Thailand 3Com Austria 3Com Benelux B V Belgium Netherlands 3Com Canada Calgary Edmonton Montreal Ottawa Toronto Vancouver 3Com France 3Com GmbH Czech Republic Slovak Republic Contact your local 3Com sales office to find your authorized service provider using one of these numbers Telephone Number 800 NET 3Com 61 2 9937 5000 Sydney 61 3 9866 8022 Melbourne 852 2501 1111 91 11 644 3974 62 21 572 2088 81 6 536 3303 Osaka 81 3 3345 7251 Tokyo 82 2 3455 6300 60 3 732 7910 64 9 366 9138 632 892 4476 8610 68492568 Beijing 86 21 63501581 Shanghai 65 538 9368 8
62. one or more protocols and groups of switch ports These protocol sensitive VLANs operate independent of each other Additionally the same switch port can belong to multiple VLANs For example you can assign port 1 on a CoreBuilder to several IP subnetwork VLANs plus one IPX VLAN one AppleTalk VLAN and one NetBIOS VLAN In a multiprotocol environment protocol sensitive VLANs can be very effective for controlling broadcast and multicast flooding Two or more types of VLANs can coexist in the CoreBuilder system When associating received data with a particular VLAN configuration in a multiple VLAN configuration port group VLANs MAC address group VLANs and application oriented VLANs always take precedence over protocol sensitive VLANS The CoreBuilder protocol sensitive VLAN configuration includes three elements protocol suite switch ports and layer 3 addressing information for IP VLANs Protocol Suite The protocol suite describes which protocol entities can comprise a protocol sensitive VLAN For example CoreBuilder VLANs support the IP protocol suite which is made up of the IP ARP and RARP protocols Table C 1 lists the protocol suites that the CoreBuilder supports as well as the protocol types included in each protocol suite C 4 APPENDIX C VLANS ON THE COREBUILDER SYSTEM Default VLAN Table C 1 Supported Protocols for VLAN Configuration Protocol Suite Protocol Types IP IP ARP RARP Ethertype SNAP PID Novell IPX
63. ores periodic statistical samples from the statistics group Alarm 3 Allows you to define thresholds for any MIB variable and trigger an alarm Host 4 Discovers new hosts on the network by keeping a list of source and destination physical addresses seen in good packets HostTopN 5 Used to prepare reports that describe the hosts that top a list ordered by one of their statistics Matrix 6 Stores statistics for conversations between pairs of addresses Events 9 Allows you to define actions based on alarms You can generate traps log the alarm or both RMON FDDI Groups The CoreBuilder system supports the RMON FDDI extensions specified in the AXON Enterprise specific MIB Table B 2 lists these supported groups Table B 2 RMON FDDI Extension Groups Supported in the CoreBuilder System Group Group Number Purpose axFDDI axFDDI group 1 Maintains utilization and error statistics for the segment being monitored axFDDIHistory axFDDI group 2 Gathers and stores periodic statistical samples from the statistics group APPENDIX B REMOTE MONITORING RMON TECHNOLOGY Statistics and axFDDI Groups The Statistics group records frame statistics for Ethernet and FDDI interfaces The information available per interface segment includes Number of received octets Number of received packets Number of received broadcast packets Number of received multicast packets Number of received packets with CRC or alignment errors Number of received u
64. pdated system software is connected to the CoreBuilder 6000 system You can load the system software into flash memory while the system is operating You do not need to bring the system down After the flash install is completed a quick reboot puts the newly loaded software to use If you are loading software from a PC host the FTP server software must be running on the PC before you begin this procedure Perform NV data saves and restores only at the same software revision level NV data converts automatically with system software updates 8 0 2 or later Loading System Software on the LMM 7 Loading 8 2 3 software into flash memory takes approximately 10 to 15 minutes to complete depending on your network load To load the new software From the top level of the Administration Console enter system softwareUpdate The system prompts you for the Host IP address Install filename User name and Password Press Return or Enter to accept the default values which are shown in brackets The Password field does not display what you enter Next to Host IP address enter the IP address of the host machine such as a Sun workstation or PC from which you are installing the software In the example in step 5 the IP address of the host is 192 9 200 96 Next to Install file pathname enter the complete path and filename For MS DOS system syntax you must precede the full path with a slash For example if you are loading software from
65. play Select IP stack by slot 2 3 7 9 12 all 12 snmp analyzer ping ee ae 3 Enter the index number of the IP interface you want to disable ogou Enter an IP interface index 1 2 The interface is disabled Enabling Multicast Multicast routing is enabled on all existing IP interfaces when you have not Interfaces specifically disabled it You can use this option to change the characteristics of an existing interface or to enable an interface that you had previously disabled To enable a multicast interface or modify the multicast characteristics of an existing IP interface Top Level Menu system 1 From the top level of the Administration console enter interface fadi route f dvmrp i SE igmp display ip multicast interface enable bridge P multicast interfaq enable Pip ae R 2 Enter the slot of the switching module for which you want to enable a ipx appletal icmpRoutf cacheDisplay multicast interface snmp P analyzer PING script Statistics 3 Enter the index number s of the interface s you want to enable logout 4 Enter the DVMRP metric value of the chosen interface s 5 Enter the Time To Live TTL threshold of the chosen interface s 6 Enter the rate limit of the chosen interface s APPENDIX A IP MULTICAST ROUTING Example Select IP stack by slot 2 3 7 9 12 all 12 Enter an IP interface index 1 2 Enter Interface DVMRP metric 1 1 Enter Interface TTL th
66. port s 1 8 all Enter the number s of the port s that you want to configure 1 2 5 7 To select the default a11 press Return Enter enable or disable to select the IFM mode for each selected port Enter new value disabled enabled disabled Enter enabled to set the port to IFM mode or disabled to deactivate IFM for the port To select the port s current setting shown in brackets press Return This action leaves the port setting unchanged Repeat step 4 to configure all selected ports in all selected slots Bridge MIB Support for the FESM FESM support has been added to the Bridge MIB Filter MIB Support To support Filter Builder software this revision adds the Filter MIB address group port group and bridge packet filter program See the Filter Builder Getting Started Guide which is shipped with the Filter Builder software for more information about the Filter Builder product FTP Packet Filter Program Transfers via SNMP You can now use File Transfer Protocol FTP to transfer a user defined packet filter program from a remote server to a CoreBuilder switching module through the SNMP IpsFtTable MIB Disconnecting an Active telnet or rlogin Session Modifications to the telnet and rlogin features of the CoreBuilder 6000 system now allow you to preempt users by forcing a disconnection This administrative feature requires that you use the system Administer password at the Administration Console The rlogin us
67. reater of the revision 1 LMM Revision 2 12 or greater of the revision 2 LMM CAUTION f you attempt to run CoreBuilder system software 8 2 0 or greater on an earlier revision of the LMM the system fails to reboot when you turn it on What s New at Revision 8 2 0 15 To verify that you have an LMM module and not an LMM module installed Verify that the module s ejector tab is labeled LMM Determine the revision level of your LMM From the top level of the Administration Console enter system display To upgrade your LMM or LMM see Upgrading Your LMM or LMM on page 1 FESM and FSM HSI Switch Engine You can combine the Fast Ethernet Switching Module FESM and the FDDI Switching Module FSM into a multiboard high speed interconnect HSI switch engine An HSI switch engine is a combined set of FSMs FESMs or both which when inserted into the HSI bus according to specific configuration rules operates as a single switch Multiple FSMs and FESMs in a single HSI switch engine form a bridge out of the combined set of external ports on all modules in that switch engine As a new module is added to an existing HSI switch engine configuration information for the existing HSI switch engine is added to the new module You must manually configure any port specific information Ability to Administer Fast Ethernet Ports New menus on the Administer menu allow you to administer Fast Ethernet ports on the Fast Ethernet
68. report information about the network to the network administrator Counters for example hold and update the number of occurrences of a particular event through a port module or switch on the network Alarms monitor the counters and report instances of when counters exceed their set threshold Counters are useful when you compare their values at specific time intervals to determine rates of change The time intervals can be short or long depending on what you measure Occasionally reading counters can give you misleading results Counters are not infinite which makes rate comparisons an efficient way to use them When counters reach a predetermined limit they return to 0 roll over A single low counter value might accurately represent a condition on the network Or it might simply indicate that a roll over has occurred B 6 APPENDIX B REMOTE MONITORING RMON TECHNOLOGY gt When you disable a port the application might not update some of the statistics counters associated with it An alarm calculates the difference in counter values over a set time interval and remembers the high and low values When the value of a counter exceeds a preset threshold the alarm reports this occurrence You can assign alarms with Transcend Enterprise Manager or any other SNMP network management application to monitor any counter gauge timetick or integer Consult the documentation for your management application for details on setting up alarm
69. reshold 1 Enter interface rate limit in KBits sec 0 Administering A multicast tunnel allows multicast packets to cross several unicast routers Multicast Tunnels to a destination router that supports multicast A tunnel has two end points Top Level system bridge p snmp analyzer script logout The local end point is associated with an interface on the CoreBuilder router When you define the tunnel you specify the associated index on the local CoreBuilder router and then the characteristics of the tunnel Tunnel characteristics are the same as those of an interface You also specify the IP address of the remote multicast router gt Not all multicast configurations require a tunnel The only configurations that require a tunnel are those that require a connection between two multicast internetworks through one or more unicast routers Displaying To display the IP multicast tunnels on the router Multicast Tunnels Menu multicas routing 1 From the top level menu of the Administration Console enter ip multicast tunnel display 2 Enter the slot of the switching module for which you want to display a dvmrp amp Paispay Multicast interface interface define udpHelp tunnel remove routeDisplay Select IP stack s by slot 2 3 7 9 12 all 9 icmpRou cacheDisplay rip ping Statistics Example IP multicast tunnel configuration Index Local Address Remote Address Metric Threshold RateLim
70. s Setting Alarm Thresholds Thresholds determine when an alarm reports that a counter has exceeded a certain value You can set alarm thresholds through the network manually and choose any value for them that is appropriate for your application The network management software monitors the counters and thresholds continually during normal operations to provide data for later calibration Example of an Alarm Threshold Figure B 1 shows a counter with thresholds set manually Counter Manually set high threshold J user specified Manually set low threshold user specified Yy Time Figure B 1 Manually Set Thresholds Host Group RMON Groups B 7 You can associate an alarm with the high threshold the low threshold or both The actions taken because of an alarm depend on the network Management application RMON Hysteresis Mechanism The RMON hysteresis mechanism provides a way to prevent small fluctuations in counter values from causing alarms This mechanism generates an alarm only under the following conditions m The counter value exceeds the high threshold after previously falling below the low threshold An alarm does not occur if the value has not fallen below the low threshold before rising above the high threshold m The counter value exceeds the low threshold after previously exceeding the high threshold An alarm does not occur if the value has not risen above the high threshold before falli
71. s within that subnetwork The destination multicast group Cache timer the amount of time a cache entry has to remain in the cache Number of seconds s minutes m or hours h that the cache entry has been in existence The time remaining in seconds s minutes m or hours h before another prune will be sent to prune the Spanning Tree Interface number on which that gateway is connected Traffic is expected to originate from this interface T represents the tunnel P denotes that a prune has been sent to this tunnel Set of interfaces on which the traffic will be flooded out I repre sents the interface REMOTE MONITORING RMON B TECHNOLOGY This appendix provides an overview of RMON and describes the specific CoreBuilder RMON implementation What Is RMON The Remote Monitoring RMON Management Information Base MIB provides a way to monitor and analyze a local area network LAN from a remote location RMON is defined by the Internet Engineering Task Force IETF in documents RFC 1271 and RFC 1757 A typical RMON implementation has two components m Probe Connects to a LAN segment examines all the LAN traffic on that segment and keeps a summary of statistics including historical data in its local memory m Management Console Communicates with the probe and collects the summarized data from it The console does not need to reside on the same network as the probe It can manage the probe through S
72. s may be registered trademarks or trademarks of their respective holders CONTENTS COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Overview 1 Hardware Dependencies 1 Upgrading Your LMM or LMM 1 Extended Switching Software Requirement 2 Release Highlights for 8 2 3 2 Release Highlights for 8 2 0 2 Before You Start 3 Updating Your System Software 3 Copying System Software toa Hard Disk 4 Copying to the UNIX Platform 4 Copying to the MS DOS Platform 5 Loading System Software on the LMM 6 User Documentation 8 What s New at Revision 8 2 3 9 New Features 9 Software Support for Protocol based VLANs 9 Support for Seven RMON Data Groups 9 IP Interface Configuration Change 10 Routing on FESM Modules 11 Additional RMON MIB Support 11 RMON Support for FDDI Switched Ports 11 Enabling and Disabling STP Transitions on linkState Changes 12 Displaying Bridge Information 12 What s New at Revision 8 2 0 14 New Features 14 Fast Ethernet Switching Module FESM Support 14 FESM and FSM HSI Switch Engine 15 Ability to Administer Fast Ethernet Ports 15 Bridge MIB Support for the FESM 18 Filter MIB Support 18 FTP Packet Filter Program Transfers via SNMP 18 Disconnecting an Active telnet or rlogin Session 18 STP linkState Changes 20 CoreBuilder 6000 12 Slot Chassis 21 System Issues 23 Known Problems 26 SNMP MIB Files 28 Supported Versions 28 Compiler Support 29 Revision History 30 IP MULTICAST ROUTING Overview A 1 Enabling and Dis
73. specified APPENDIX D ADMINISTERING VLANS Example of a summary display for several VLANs Select menu option bridge vlan summary Select bridge s by slot 2 3 5 7 12 all 2 Index Protocol Identifier Ports 1 default 0 1 18 Index Name Layer 3 1 none Example of a detailed display for the VLANs Select menu option bridge vlan detail Index Protocol Identifier Ports 1 default 0 1 18 Index Name Layer 3 1 none Index inPackets inBytes outPackets outBytes 1 54 7654 54 6897 Displaying VLAN Information D 3 Table D 1describes these statistics Table D 1 Field Attributes for VLAN Information Field Index Protocol Identifier Ports Name Layer 3 inPackets inBytes outPackets outBytes Description A system assigned index used for identifying a particular VLAN The protocol suite of the VLAN A unique user defined 4 byte integer for use by global management operations The numbers of the ports assigned to the VLAN A 16 byte character string intended to identify the members of the VLAN Optional parameters consisting of IP subnetwork and mask used to set up flood domains for overlapping IP VLAN subnetworks Number of flooded broadcast and multicast packets that were received on the VLAN Number of flooded broadcast and multicast bytes that were received on the VLAN Number of flooded broadcast and multicast packets transmitted over the VLAN Number of flooded broadcast and multicast bytes
74. stration Console EFSMs with only 1 MB of memory have blank lower ejector tabs EFSMs with a minimum of 2 MB of memory have 2MB on the lower ejector tab labels CoreBuilder system software release 8 2 3 offers support for the following items Software support for protocol based VLANs Support for seven RMON data groups IP interface configuration change Routing on FESM Modules Additional RMON MIB support RMON support for FDDI switched ports For more information about this release see What s New at Revision 8 2 3 on page 9 CoreBuilder system software release 8 2 0 supports the following items Fast Ethernet Switching Module FESM FESM and FSM HSI Switch Engines Ability to administer Fast Ethernet Ports Bridge MIB support for the FESM Before You Start gt Updating Your System Software Updating Your System Software 3 Filter MIB FTP packet filter program transfers via SNMP Disconnecting an active telnet or rlogin session STP linkState changes CoreBuilder 6000 12 slot Chassis For more information about this release see What s New at Revision 8 2 0 on page 14 Before you install your new software read all of these release notes Carefully read System Issues on page 23 and Known Problems on page 26 The top level menus in your Administration Console may vary from those illustrated in these release notes depending on your level of access privilege and on the modules you have ins
75. t mask of the network to which the interface is to be connected 6 Enter the cost value of the interface What s New at Revision 8 2 3 11 7 Enter the advertisement address to be used on the interface 8 Enter the number of the VLAN whose interface you are defining Example Select IP stack by slot 1 3 5 7 9 12 1 5 Enter IP address 158 101 1 1 Enter subnet mask 255 255 0 0 255 255 255 0 Enter cost 1 Enter advertisement address es 158 101 1 255 IP VLANS Index Ports 3 1 8 4 9 12 Select VLAN index 3 Routing on FESM Modules This release supports IP routing and IP multicast routing on FESM modules For more information on IP multicast routing see Appendix A IP Multicast Routing Each switching module or HSI switch engine operates as a separate IP router gt This strategy means that each non HS module such as the ESM EFSM or TMM FE module has its own interfaces routing table ARP cache and statistics and each HSI switch engine has its own interfaces routing table ARP cache and statistics Additional RMON MIB Support The FESM RMON Management Information Base MIB contains standard MIB variables that are defined to collect comprehensive network statistics and proactively alert a network administrator to significant network events If the embedded RMON agent operates full time it collects data on the correct port when an event occurs RMON Support for FDDI Switched Ports Revision
76. talled in your CoreBuilder chassis You can install a new software version from any host that is running FTP server software The system software is distributed for both the UNIX and the MS DOS platforms The following media types are used to distribute compressed files for software releases UNIX tar format 3 inch double sided high density 1 44 MB diskettes MS DOS format 3 inch double sided high density 1 44 MB diskettes To install or upgrade your system software you must Copy the software from the diskette to your UNIX or MS DOS computer s hard disk Decompress the software Load the system software from your computer s hard disk to flash memory on the LMM Details for these procedures are provided in the next sections 4 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 Copying System Software toa Hard Disk You can copy system software to a computer that runs either a UNIX or an MS DOS operating system Copying to the UNIX Platform The CoreBuilder software for a UNIX system is distributed on six diskettes Diskettes 1 2 3 4 and 5 contain the CoreBuilder software Diskette 6 contains the SNMP MIBs To copy the software to a UNIX hard disk follow these instructions If the directory usr 1p6000R does not exist on your computer create the directory before proceeding If your usr directory is full use a different directory and substitute the name of the actual directory for usr in
77. the system the frame is flooded to the default VLAN for the receive port C 6 APPENDIX C VLANS ON THE COREBUILDER SYSTEM VLAN Exception Flooding This example shows how flooding decisions are made according to VLANs set up by protocol assuming an 18 port switch Index VLAN Ports 1 Default 1 18 2 IP 1 12 3 IPX 11 16 Data received on Is flooded on Because IP port 1 VLAN 2 IP data received matches IP VLAN on the source port IPX port 11 VLAN 3 IPX data received matches IPX VLAN on the source port XNS port 1 VLAN 1 XNS data received matches no protocol VLAN so the Default VLAN is used If data arrives on a switch port for a certain protocol and VLANs for that protocol are defined in the system but not on that switch port the default VLAN defines the flooding domain for that data This case is called VLAN exception flooding This example shows how the VLAN exception flooding decision is made assuming an 18 port switch Index VLAN Ports 1 Default 1 18 2 IP 1 10 Data received on Is flooded on Because XNS port 1 VLAN 1 XNS data does not match any defined VLAN in the system IP port 2 VLAN 2 IP data received matches IP VLAN 2 for source ports 1 10 IP port 12 VLAN 1 IP data received on source port 12 does not match any defined source port for IP VLAN so the Default VLAN is used Overlapped IP VLANs About VLANs C 7 The CoreBuilder system also gives you the ability to assign network layer
78. the slot s that contain ports that you want to set to Tull duplex mode 10 12 For each slot you enter the system prompts you for specific port numbers Select Ethernet port s 1 8 all 3 Enter the number s of the port s that you want to configure 1 2 5 7 The system displays this message Warning Changing mode to full duplex disables collision detection The device connected to this port must be configured for the same duplex mode Do you want to change the duplex mode n y y The CoreBuilder 6000 system does not support autonegotiation of duplex mode between devices You must configure any device attached to this port to the same duplex mode as the port 4 Enter y for Yes n for No You receive the prompt to select each port s duplex mode Enter new value full half half Top Leve Menu Default system ethernet fddi tokenrin bridge ip ipx appletalk snmp analyzer script logout summary detail b fastEthernet label portState duplexMode D ifm Default What s New at Revision 8 2 0 17 Enter fu11 to set the port to full duplex mode or ha to set the port to half duplex mode The port s current setting is indicated in brackets To select this default press Return This action leaves the port duplex mode unchanged Repeat steps 4 and 5 to configure all the selected ports in all the selected slots Changing the mode to full duplex disables collision detection on th
79. this and subsequent procedures Insert diskette 1 into the disk drive These instructions assume drive rfdO Extract the first part of the software file using the following commands cd usr 1p6000R tar xvf dev rfd0O Remove diskette 1 using the following command eject Insert diskette 2 into the disk drive and extract the second part of the file using the following command tar xvf dev rfd0O Remove diskette 2 using the following command eject Insert diskette 3 into the disk drive and extract the third part of the file using the following command tar xvf dev rfdO Remove diskette 3 using the following command eject 10 11 12 Updating Your System Software 5 Insert diskette 4 into the disk drive and extract the fourth part of the file using the following command tar xvf dev rfdO Remove diskette 4 using the following command eject Insert diskette 5 into the disk drive and extract the fifth part of the file using the following command tar xvf dev rfdO Remove diskette 5 using the following command eject The following files are now in your usr 1p6000R directory README 1 1p6000R00 1p6000R01 1p6000R02 1p6000R03 1p6000R04 restore lpxR Use the supplied script to decompress and restore the split file 1p6000R00 1p6000R01 1p6000R02 1p6000R03 and 1p6000R04 restore_lpxR This procedure creates the uncompressed file 1p6000R See the README1
80. ts the interface Together these attributes define a Spanning Tree configuration The system disables interfaces that comprise loops APPENDIX A IP MULTICAST ROUTING Displaying the Multicast Cache Top Level Menu system ethernet fddi tokenring bridge dip ipx appletalk snmp analyzer script logout interface route arp multicast udpHelper routing icmpRouter rip ping statistics dvmrp igmp interfaces tunnel routeDisplay cacheDisplay 2 The multicast cache contains the IP source address and destination address for packets observed on the system The multicast cache shows you how information is routed over interfaces and ports in your system To display all learned routes in the multicast cache From the top level of the Administration Console enter ip multicast cacheDisplay Enter the slot s of the switching module for which you want to view the multicast cache Enter the multicast source address at the prompt Enter the multicast group address at the prompt The DVMRP status and IGMP status appear on the screen Example Select IP stack s by slot 2 3 7 9 12 all 12 Enter multicast source address 131 188 0 0 Enter multicast group address 244 2 0 2 DVMRP is enabled IGMP snooping is enabled Displaying the Multicast Cache The following display shows the multicast cache configuration Multicast Routing Cache Table 125 entries Origin gt 202 242 133 128
81. ut affecting the characteristics and performance of the network The RMON MIB reports by exception rather than by sending constant or frequent information to the network management console The RMON probe informs the network management console directly if the network enters an abnormal state The console can then use more information from the probe such as history information to diagnose the abnormal condition The CoreBuilder Extended Switching software offers fulltime embedded RMON support through SNMP for seven RMON Groups When combined with the Roving Analysis Port RAP function RMON support for these groups provides a comprehensive and powerful mechanism for managing your network You can gain access to the RMON capabilities of the CoreBuilder 6000 system only through SNMP applications such as Transcend Enterprise Manager software not through the serial interface or telnet For more information about the details of managing 3Com devices using RMON see the user documentation of 3Com s Transcend Network Management for Windows suite of applications RMON Groups B 3 RMON Groups The CoreBuilder system supports seven of the RMON groups defined by the Internet Engineering Task Force IETF Table B 1 lists these supported groups Table B 1 RMON Groups Supported in the CoreBuilder System Group Group Number Purpose Statistics 1 Maintains utilization and error statistics for the segment being monitored History 2 Gathers and st
82. ved including bad packets broadcast packets and multicast packets etherStatsEntry 5 Figure B 3 Example of an RMON MIB Counter Object The displayed information includes these items The formal name of the counter is etherStatsPkts Ethernet Statistics Packets The access is read only The number of the counter s column in the table 5 The name of the table in which the counter resides is 3CometherStatTable although this name does not appear in the display You do not need to know the contents of every MIB object to manage a network Most network management applications including Transcend Enterprise Manager Software make the MIB transparent However knowing how different management features are derived from the MIB allows you to better understand how to use the information that they provide About VLANs Types of VLANs VLANS ON THE COREBUILDER SYSTEM This appendix contains A description of Virtual LAN VLAN concepts and their operational aspects in the CoreBuilder 6000 system Examples of VLAN configurations The VLAN concept in LAN technology helps minimize broadcast and multicast traffic It also makes end station moves adds and changes easier for the network administrator In the CoreBuilder system VLANs allow you to Create independent broadcast domains to optimize network performance and create firewalls Form flexible user groups independent of the users physical network locat
83. working information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3com com This service features the latest information about 3Com solutions and technologies customer service and support news about the company Net Age Magazine technical documentation and more 3Com Bulletin Board 3ComBBS contains patches software and drivers for all 3Com products Service as well as technical articles This service is available through analog modem or digital modem ISDN 24 hours a day 7 days a week E 2 APPENDIX E TECHNICAL SUPPORT 3ComFacts Automated Fax Service 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 teleohone number nearest you Telephone Number Country Data Rate Australia up to 14400 bps Brazil up to 14400 bps France up to 14400 bps Germany up to 28800 bps Hong Kong up to 14400 bps Italy up to 14400 bps Japan up to 14400 bps Mexico up to 28800 bps P R of China up to 14400 bps Taiwan R O C up to 14400 bps U K up to 28800 bps U S A up to 28800 bps Access by Digital Modem 61 2 9955 2073 55 115181 9666 33 1 6986 6954 4989 62732 188 852 2537 5601 39 2 27300680 81 3 3345 7266 52 5 520 7835 86 10 684 92351 886 2 377 5840 44 1442 438278 1 408 980 8204 ISDN users can dial in to 3ComBBS using a digital modem for fast access up to 56 Kbps To access 3ComBBS using ISDN use
84. y lights green when the power supply is running correctly If the power supply fails the system generates a sound and the power supply LED does not light You can remove and replace either of the two power supplies at the back of the chassis Turning off one of the power supplies generates a sound and the control panel LCD displays Input Failure 22 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 To remove a faulty power supply and replace it with a new unit follow these steps 1 Turn off the power supply according to the safety and removal procedures in the Installation Guide that is shipped with the new power supply The system control panel displays the following message where n designates power supply 7 or power supply 2 Power Supply n Input Failure 2 Remove the power supply The system generates a sound and the system control panel displays the following message Power supply n extracted 3 Insert the new power supply following the safety warnings and instructions in the Installation Guide that comes with the new power supply The system displays this message Inserted This message is immediately overwritten with Input Failure 4 Turn on the power supply The system generates a sound and the system control panel displays this message Input restored Power Supply Warning Messages This release of system software now displays these power supply warning messages on the control panel when appropriate
85. you must disable stpFollowLinkState If you are not a Windows 95 client do nothing To enable or disable Spanning Tree transitions From the top level of the Administration console enter bridge stpFollowLinkState To enable Spanning Tree transitions enter enabled To disable Spanning Tree transitions enter disabled Displaying Bridge Information You can display the current setting for stpFollowLinkState The display includes bridge statistics such as topology change information and configurations for the bridge To display the bridge information From the top level of the Administration console enter bridge port summary OR bridge port detail The system prompts you for slot number s stpState disabled stpFollowLinkState enabled designatedRoot 0000 000000000000 maxAge 20 bridgeFwdDelay 15 rootCost 0 agingTime 300 addressCount 40 ipFragmentation enabled trFDDiMode n a What s New at Revision 8 2 3 13 Sample display of bridge port information timeSinceLastTopologyChange 0 hrs 0 mins 0 secs topologyChangeCount 0 topologyChangeFlag BridgeIdentifier false 8000 00803elbf216 stpGroupAddress 01 80 c2 00 00 00 bridgeHelloTime 2 forwardDelay 15 rootPort No port mode transparent peakAddrCount 40 ipxTranslation disabled SRBridgeNumber n a bridgeMaxAge 20 helloTime 2 holdTime 1 priority 0x8000 addrTableSize 32678 addrThreshold 320

3Com 10002211 Switch User Manual

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