3Com 10002211 manual 3Com Transcend Rmon Agents

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B-8 APPENDIX B: REMOTE MONITORING (RMON) TECHNOLOGY

HostTopN Group 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

Matrix Group The Matrix group records statistics on conversations between sets of addresses. The information available from this group includes:

■Number of packets transmitted 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

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 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:

■You can integrate RMON with normal device management.

■The CoreBuilder system can manage conditions proactively.

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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 CoreBuilder 6000 Extended Switching software from 3Com OverviewDated May 30 Corebuilder 6000 Extended Switching Software Revision Updating Your System Software Remove diskette #1 using the following command Remove diskette #2 using the following commandRemove diskette #3 using the following command Remove diskette #4 using the following command Remove diskette #5 using the following commandFollowing ﬁles are now in your /usr/lp6000R directory Loading System Software onLMM+ \3com\lp6000R\image\lp6000R User DocumentationWhat’s New at Revision 8.2.3?Corrections implemented at this release 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 parametersEnabling Disabling DvmrpDisabling Igmp Administering IP MulticastInterfaces 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 TMMInformation for An HSI Switch Engine Enter the subnetwork maskDeﬁning Vlan Follow these steps to create a Vlan deﬁnition 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