3Com 10002211 manual Table B-3 Supported Ethernet and Fddi Frame Size Buckets

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B-4 APPENDIX B: REMOTE MONITORING (RMON) TECHNOLOGY

Statistics and The Statistics group records frame statistics for Ethernet and FDDI interfaces. axFDDI Groups 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 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 Ethernet and FDDI Frame Size Buckets

Ethernet

FDDI

 

 

64 byte frames

22 or fewer

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

 

 

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Contents CoreBuilder Extended Switching Software Revision October 17 CorebuilderUnited States Government Legends Contents IP Multicast Routing Vlans on the Corebuilder System 3COM Corporation Limited Warranty Dated May 30 CoreBuilder 6000 Extended Switching software from 3ComOverview Corebuilder 6000 Extended Switching Software Revision Updating Your System Software Remove diskette #3 using the following command Remove diskette #1 using the following commandRemove diskette #2 using the following command Following files are now in your /usr/lp6000R directory Remove diskette #4 using the following commandRemove diskette #5 using the following command LMM+ Loading SystemSoftware on \3com\lp6000R\image\lp6000R User DocumentationCorrections implemented at this release What’s New atRevision 8.2.3? To define an IP interface Enter the number of the Vlan whose interface you are defining AxFDDI axFDDI group AxFDDIHistory axFDDI groupTo enable Spanning Tree transitions, enter To disable Spanning Tree transitions, enterDisplaying Bridge Information System prompts you for slot numbersSample display of bridge port information Revision 8.2.0? Corrections that are implemented at this releaseWhat’s New at Revision 8.2.0? You receive the prompt to select each port’s duplex mode System displays this messageDefault To select the default all, press Return FTP Packet Filter Program Transfers via Snmp first telnet session is disconnected and the system displays Sample screen showing the display after the changes What’s New at Revision 8.2.0? Power supply +5-volt input has failed Power supply +12-volt input has failedPower supply +5-volt input is restored This message is immediately overwritten withSystem Issues System nvdata reset System Issues Known Problems New Imports section now looks like thisReceived ftpCommand Quit not completed errno Corebuilder 6000 Extended Switching Software Revision Snmp MIB Files Support for IP routing on the Fddi Switching Module FSM Configurable Source Route hop count limit Efsm LpBridgePortAddressLearnedEvent Corebuilder 6000 Extended Switching Software Revision IP Multicast Routing Following parametersDisabling Igmp EnablingDisabling Dvmrp Interfaces Administering IPMulticast Multicast interface Example multicast interface configuration for the slotDisabling Multicast Interfaces Enabling Multicast InterfacesAdministering Multicast TunnelsExample Address of the remote multicast routerAssociate a multicast tunnel Enter the IP address of the destination multicast routerEnter the Dvmrp metric value of the tunnel Enter the Time To Live TTL threshold of the tunnelDisplaying Routes Following display shows all available multicast routes Table A-1describes the fields in the route displayDisplaying Multicast CacheFollowing display shows the multicast cache configuration Table A-2describes the fields in the CacheDisplay Remote Monitoring Rmon B Technology CoreBuilder ImplementationSegment being monitored Table B-3 Supported Ethernet and Fddi Frame Size Buckets Rmon Groups Setting Alarm Thresholds Example of an Alarm ThresholdRmon Groups 3Com Transcend Rmon Agents Management Information Base MIB Figure B-3 Example of an Rmon MIB Counter Object About VLANs CoreBuilder system, VLANs allow you toCreate firewalls LocationsAppendix C Vlans on the Corebuilder System Protocol Suite Layer 3 Addressing Information SNAModifying the Default Vlan How CoreBuilder System Makes Flooding DecisionsVlan Exception Flooding Overlapped IP VLANs Routing Between VLANs Administering Vlans Displaying Vlan InformationExample of a summary display for several VLANs Table D-1describes these statistics Defining Vlan Information for aTraditional Bridge As an Efsm or a TMMDefining Vlan Follow these steps to create a Vlan definition Information for An HSI Switch EngineEnter the subnetwork mask Enter the IP subnet address Enter the subnetwork mask Bridge vlan modify Bridge vlan remove Technical Support Access by Analog Modem Type go threecom Regional Sales Office Telephone Number 3Com Corporation Returning Products for Repair Page 3Com Corporation Limited Warranty Limitation of Liability