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3Com CoreBuilder 6000, Software Installation And Release Notes

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A-8

A

PPENDIX

 A: IP M

ULTICAST

 R

OUTING

Removing a

Multicast Tunnel

To remove an IP multicast tunnel:

1

From the top level of the Administration Console, enter:

ip multicast tunnel remove

2

Enter the slot(s) of the switching module for which you want to remove a 
multicast tunnel.

Select IP stack(s) by slot (2,3,7,9-12|all) [12]:

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:

1

From top level of the Administration Console, enter:

ip multicast routeDisplay

2

Enter the slot(s) of the switching module for which you want to view IP 
multicast routes.

Select IP stack(s) by slot (2,3,7,9-12|all) [12]:

3

The DVMRP and IGMP status appear on the screen. 

Slots 9-12 - DVMRP is disabled, IGMP snooping is enabled

Top-Level Menu

system
ethernet
fddi
tokenring
bridge

➧

ip
ipx
appletalk
snmp
analyzer
script
logout

interface
route
arp

➧

multicast
udpHelper
routing
icmpRouterDiscovery
rip
ping
statistics

dvmrp
igmp
interface

➧

tunnel
routeDisplay
cacheDisplay

display
define

➧

remove

Top-Level Menu

system
ethernet
fddi
tokenring
bridge

➧

ip
ipx
appletalk
snmp
analyzer
script
logout

interface
route
arp

➧

multicast
udpHelper
routing
icmpRouterDiscovery
rip
ping
statistics

dvmrp
igmp
interface
tunnel

➧

routeDisplay
cacheDisplay

Summary of Contents for CoreBuilder 6000

Page 1: ... 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 ...

Page 2: ...ts 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...

Page 3: ...ation 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 Ne...

Page 4: ... 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 B REMOTE MONITORING RMON TECHNOLOGY What Is RMON B 1 Benefits of RMON B 2 CoreBuilder RM...

Page 5: ...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 D ADMINISTERING VLANS Displaying VLAN Information D 1 Defining VLAN Information for a Traditional Bridge D 4 D...

Page 6: ...etin 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 ...

Page 7: ... 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 on To reboot a system that has failed to reboot automatically connect a terminal to the serial port on the LMM ...

Page 8: ... of memory on the EFSM look at the lower ejector tab label or use the system display command from the top level of the Administration 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 Release Highlights for 8 2 3 CoreBuilder system software release 8 2 3 offers support for the following items Softwar...

Page 9: ... the modules you have installed in your CoreBuilder chassis Updating Your System Software 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 31 2 inch double sided high density 1 4...

Page 10: ...proceeding If your usr directory is full use a different directory and substitute the name of the actual directory for usr in this and subsequent procedures 1 Insert diskette 1 into the disk drive These instructions assume drive rfd0 2 Extract the first part of the software file using the following commands cd usr lp6000R tar xvf dev rfd0 3 Remove diskette 1 using the following command eject 4 Ins...

Page 11: ...w in your usr lp6000R directory README1 lp6000R00 lp6000R01 lp6000R02 lp6000R03 lp6000R04 restore_lpxR 12 Use the supplied script to decompress and restore the split file lp6000R00 lp6000R01 lp6000R02 lp6000R03 and lp6000R04 restore_lpxR This procedure creates the uncompressed file lp6000R See the README1 file for file size and checksum information Copying to the MS DOS Platform The CoreBuilder so...

Page 12: ...xit 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 lp6000R which contains IMAGE folder MIBS folder README text Loading System Software on the LMM Before loading the system software on the LMM verify that the host computer which has a copy of the updated system software is connected to th...

Page 13: ...tep 5 the IP address of the host is 192 9 200 96 3 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 an MS DOS host enter the following command at the Install file pathname prompt c 3com lp6000R image lp6000R 4 Next to User name enter your user name 5 Next to Password ...

Page 14: ... version of software is compatible with the documentation listed here Some of this documentation may be available 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 Ref...

Page 15: ...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 CoreBuilde...

Page 16: ...specify several interface characteristics as well as the index for the VLAN that is associated with the interface 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 1 From the top level of the Administr...

Page 17: ... a separate IP router This strategy means that each non HSI 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 comprehens...

Page 18: ...ning 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 1 From the top level of the Administration console enter bridge port summary OR bridge port detail The system prompts you for slot ...

Page 19: ...3elbf216 designatedRoot stpGroupAddress bridgeMaxAge 0000 000000000000 01 80 c2 00 00 00 20 maxAge bridgeHelloTime helloTime 20 2 2 bridgeFwdDelay forwardDelay holdTime 15 15 1 rootCost rootPort priority 0 No port 0x8000 agingTime mode addrTableSize 300 transparent 32678 addressCount peakAddrCount addrThreshold 40 40 32000 ipFragmentation ipxTranslation lowLatency enabled disabled disabled trFDDiM...

Page 20: ...media Six 100BASE 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 co...

Page 21: ...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 a...

Page 22: ... the number s of the slot s that contain ports that you want to set to full 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...

Page 23: ...s 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 a...

Page 24: ... 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 FT...

Page 25: ...on 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 o...

Page 26: ... The system prompts you for port number s 4 Enter the number s of the port s or all to view port parameters for all ports on the bridge Sample screen showing the display after the changes Top Level Menu system ethernet fddi tokenring bridge ip snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFddiMode addressThreshold agingTime stpState stpPriority stpMaxAge ...

Page 27: ...ilder 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 supply 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...

Page 28: ... 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 Inpu...

Page 29: ... as soon as you install it The system control panel displays this message Fan Restored System Issues 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 t...

Page 30: ...CoreBuilder system Roving Analysis is not supported on a port with an assigned IP router interface Roving Analysis is not supported on the FESM A Roving Analysis frame over a remote TMM FE connection is truncated if the frame is greater than 1495 bytes When configuring Roving Analysis on an ESM the system accepts an unknown MAC address as the analyzer port Bridging performance and routing performa...

Page 31: ...s 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 M...

Page 32: ...AP TYPE FROM RFC 1215 Textual conventions RowStatus as defined in SNMPv2 Refer to rfc1443 txt for concise definition This 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 t...

Page 33: ...ample 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 s...

Page 34: ...he correct status statusUserAuthFailed When you install software using the SNMP lpsFt 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 Unde...

Page 35: ...mpiler 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 fdd...

Page 36: ...P interface configuration change Routing on FESM Modules Additional RMON MIB support RMON support for FDDI switched ports 8 2 0 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 S...

Page 37: ... features Support for the Tri Media Module TMM Support for 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 Support for Token Ring and Source Routing MIBs Menu change ip forwarding to ip routing Configuration change to enable or disable rout...

Page 38: ...T RJ 45 and 10BASE FL FOIRL option modules with SAS FDDI MIC ports Support for Single Mode Fiber SMF on the FCM module Support for the 48 volt power supply 4 1 0 New features Support for EFSM Type 1 10 BASE T RJ 21 Telco 10BASE T RJ 45 and 10BASE FL FOIRL Roving Analysis for Ethernet network monitoring ESM and EFSM Support for Multiple SNMP Agents Multistation Mode FDDI Backplane Paths Enhanced Ad...

Page 39: ...er supported 3 1 5 New feature Support for SMT MIB path attribute Ring Latency 3 1 4 New features ESM 10BASE 2 BNC media support IP advertisement address configuration support 3 1 1 New features IP routing functionality TP DDI media support Nonvolatile data save and restore functionality 3 0 1 New feature Baselining of Ethernet and FDDI statistics functionality Table 2 Revision History for CoreBui...

Page 40: ...34 COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8 2 3 ...

Page 41: ...terfaces 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 and disabling the Internet Group Membership Protocol IGMP Administering IP multicast interfaces Administering multicast tunnels Route display...

Page 42: ...9 12 Enter DVMRP mode disabled enabled disabled enabled Enabling and Disabling IGMP IGMP enables a router or switch to determine whether group members exist in a subnetwork or leaf 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 whe...

Page 43: ... Multicast Interfaces 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...

Page 44: ...lay 2 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 Top Level Menu system ethernet fddi tokenring bridge ip ipx appletalk snmp analyzer script logout interface route arp multicast udpHelper rou...

Page 45: ...cast characteristics of an existing IP interface 1 From the top level of the Administration console enter ip multicast interface enable 2 Enter the slot of the switching module for which you want to enable a multicast interface 3 Enter the index number s of the interface s you want to enable 4 Enter the DVMRP metric value of the chosen interface s 5 Enter the Time To Live TTL threshold of the chos...

Page 46: ...ast 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 Multicast Tunnels To display the IP multicast tunnels on the router 1 From the top level menu of the Administration Console enter ip multicast tunnel display 2 Enter the slot of the switching module ...

Page 47: ...s 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 TT...

Page 48: ...ion Console enter ip multicast routeDisplay 2 Enter the slot s of the switching module for which you want to view IP multicast routes Select IP stack s by slot 2 3 7 9 12 all 12 3 The DVMRP and IGMP status appear on the screen Slots 9 12 DVMRP is disabled IGMP snooping is enabled Top Level Menu system ethernet fddi tokenring bridge ip ipx appletalk snmp analyzer script logout interface route arp m...

Page 49: ... 25 T1 I1 129 95 63 6 32 137 39 229 98 13 25 T1 I1 129 95 63 2 32 137 39 229 98 13 25 T1 I1 129 95 48 4 32 137 39 229 98 13 25 T1 I1 129 95 48 3 32 137 39 229 98 13 25 T1 I1 129 95 48 2 32 137 39 229 98 13 25 T1 I1 Table A 1 Field Attributes for Multicast Route Display Field Description Origin Subnet The source address and the number of bits in the subnetwork From Gateway The interface address of ...

Page 50: ... switching module for which you want to view the multicast cache 3 Enter the multicast source address at the prompt 4 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 Top...

Page 51: ...ets 128 206 212 24 224 2 0 1 92s 36m 60s T1P I1p 128 206 212 69 8 packets 131 136 234 24 224 2 0 1 3m 57m 3m T1P I1p 131 136 234 103 12 packets 138 39 25 24 224 2 0 1 103s 4h 71s T1P I1p 138 39 25 48 46 packets 192 5 28 24 224 2 0 1 80s 2h 48s T1P I1p 192 5 28 43 178 packets 199 94 220 24 224 2 0 1 104s 1h 72s T1P I1p 199 94 220 184 10 packets 199 104 80 24 224 2 0 1 3m 32m 3m T1P I1p 199 104 80 5...

Page 52: ...stination multicast group CTmr Cache timer the amount of time a cache entry has to remain in the cache Age Number of seconds s minutes m or hours h that the cache entry has been in existence PTmr The time remaining in seconds s minutes m or hours h before another prune will be sent to prune the Spanning Tree In If Interface number on which that gateway is connected Traffic is expected to originate...

Page 53: ...al data in its local memory 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 SNMP 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 co...

Page 54: ...s 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 CoreBuilder RMON Imp...

Page 55: ...up 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 ...

Page 56: ...t 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 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 E...

Page 57: ...uilder 6000 system supports the following syntax for alarms Counters Gauges Integers Timeticks These mechanisms 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 thresho...

Page 58: ... or integer Consult the documentation for your management application for details on setting up alarms 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 an...

Page 59: ...t occur if the value has not risen above the high threshold before falling 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 Host Group The Host Group records statistics for each host denoted...

Page 60: ... Number of octets excluding errors transmitted from the source address to the destination address Number of bad packets transmitted from source to destination 3Com Transcend RMON Agents 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 b...

Page 61: ...bedded RMON Implemented on the CoreBuilder System Management Information Base MIB 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 netw...

Page 62: ...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 includ...

Page 63: ...affic 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 locations Types of VLANs You can use several types of VLANs to group users These types include Port group...

Page 64: ...lows 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...

Page 65: ...le 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 mult...

Page 66: ...ault 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 Table C 1 Supported...

Page 67: ...ct 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 sourc...

Page 68: ...ng 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 Index VLAN Ports 1 Default 1 18 2 IP 1 10 Data received...

Page 69: ...mple shows how flooding decisions are made using overlapping IP VLANs assuming a 12 port switch 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 Index VLAN Network Address Mask Ports 1 Default none 1 12 2 IP 158 103 122 0 ...

Page 70: ... 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 2 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 ...

Page 71: ...ned 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 specified Top Level Menu system ethernet fddi toke...

Page 72: ... 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 ...

Page 73: ...ed to the VLAN Name A 16 byte character string intended to identify the members of the VLAN Layer 3 Optional parameters consisting of IP subnetwork and mask used to set up flood domains for overlapping IP VLAN subnetworks inPackets Number of flooded broadcast and multicast packets that were received on the VLAN inBytes Number of flooded broadcast and multicast bytes that were received on the VLAN ...

Page 74: ... 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 7 Enter defined to use layer 3 subnet addressing and continue with steps 2 and 3 OR enter undefined to not use layer 3 addressing 8 Enter the IP subnet add...

Page 75: ...AN definition 1 From the top level of the Administration Console enter bridge vlan define 2 Enter the slot number for the bridge 3 Enter the appropriate protocol suite IP IPX Apple XNS DECnet SNA Vines X 25 NetBIOS default 4 Enter the integer of the VLAN interface identifier 5 Enter the VLAN name 6 Enter the number s of the port s or all to assign all ports on the bridge in the specified slot to t...

Page 76: ...ned to not use layer 3 addressing 9 Enter the IP subnet address 10 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 1...

Page 77: ...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 ...

Page 78: ...move 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 Top Level Menu system ethernet fddi tokenring bridge ip ipx appletalk snmp analyzer script logout display mode lowLatency ipFragmentation ipxSnapTranslation trFDDIMode addressThreshold agingTime stpState stpPriority stpMaxAge stpHelloTIme stpForwardDelay stpGroupAddress s...

Page 79: ...n Board Service 3ComBBS 3ComFactsSM automated fax service 3ComForum on CompuServe online service World Wide Web Site Access the latest networking information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3com com This service features the latest information about 3Com solutions and technologies customer service and support news about the company ...

Page 80: ...ructions 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 Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 5181 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5601 Italy up to 14400 ...

Page 81: ...alified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready A list of system hardware and software including revision levels Diagnostic error messages Details about recent configuration changes if applicable If you are unable...

Page 82: ...Com Canada Calgary Edmonton Montreal Ottawa Toronto Vancouver 403 265 3266 403 423 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 3Com France 33 1 69 86 68 00 3Com GmbH Czech Republic Slovak Republic 420 2 21845 800 3Com GmbH cont d Germany Central European HQ Hungary Poland 49 30 34 98790 Berlin 49 89 627320 Munich 36 1 250 83 41 48 22 6451351 3Com Iberia Portugal Spain 351 1 3404505 34...

Page 83: ...er Products sent to 3Com without RMA numbers will be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax Country Telephone Number Fax Number U S A and Canada 1 800 876 3266 option 2 408 764 7120 Latin America 1 408 326 2927 408 764 7120 Europe South Africa and Middle East 44 1442 435860 44 1442 435822 Elsewhere 1 408 326 2926 1 408 764 7120 ...

Page 84: ......

Page 85: ...will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the noncompatibility is caused by a bug or defect in the third party s product STANDARD WARRANTY SERVICE Standard warranty service for hardware products may be obtained by delivering the defect...

Page 86: ... 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 REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE GOVERNING LAW 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 warr...

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