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16COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8.2.3

Top-Level Menu

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 your level of access and on the modules installed in your CoreBuilder 6000 chassis.

1From the top level of the Administration Console, enter:

system

➧ethernet summary

fddi detail tokenring➧fastEthernet

	bridge	label
	ip	label
	ip	portState
	ipx	portState
	ipx
	appletalk
	snmp
	analyzer
	script
	logout

s

➧duplexMode

ifm

ethernet fastEthernet duplexMode

A prompt similar to the following one appears:

Select slot(s) (10-12all):

This prompt indicates that the CoreBuilder 6000 system contains conﬁgurable Fast Ethernet ports in slots 10, 11, and 12.

2Enter 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):

3Enter 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.

4Enter y for Yes, n for No.

You receive the prompt to select each port’s duplex mode:

Enter new value (full, half) [half]:

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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 Overview CoreBuilder 6000 Extended Switching software from 3ComDated May 30 Corebuilder 6000 Extended Switching Software Revision Updating Your System Software Remove diskette #2 using the following command Remove diskette #1 using the following commandRemove diskette #3 using the following command Remove diskette #5 using the following command Remove diskette #4 using the following commandFollowing ﬁles are now in your /usr/lp6000R directory Software on Loading SystemLMM+ \3com\lp6000R\image\lp6000R User DocumentationRevision 8.2.3? What’s New atCorrections 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 groupDisplaying Bridge Information To enable Spanning Tree transitions, enterTo disable Spanning Tree transitions, enter 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 is restored Power supply +5-volt input has failedPower supply +12-volt input has failed 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 Dvmrp EnablingDisabling Igmp Multicast Administering IPInterfaces Multicast interface Example multicast interface conﬁguration for the slotDisabling Multicast Interfaces Enabling Multicast InterfacesExample AdministeringMulticast Tunnels Address of the remote multicast routerEnter the Dvmrp metric value of the tunnel Associate a multicast tunnelEnter the IP address of the destination multicast router 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 Create ﬁrewalls About VLANsCoreBuilder system, VLANs allow you to 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 Traditional Bridge Deﬁning VlanInformation for a As an Efsm or a TMMEnter the subnetwork mask Information for An HSI Switch EngineDeﬁning 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