3Com 10002211 manual To enable Spanning Tree transitions, enter, Displaying Bridge Information

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12COREBUILDER 6000 EXTENDED SWITCHING SOFTWARE REVISION 8.2.3

	Top-Level Menu
	system	display
	ethernet
		mode
	fddi
		lowLatency
	tokenring
		ipFragmentation
	➧bridge
		ipxSnapTranslation
	ip
		trFddiMode
	snmp
		addressThreshold
	analyzer
		agingTime
	script
		stpState
	logout
		➧stpFollowLinkState

		stpPriority
		stpMaxAge
		stpHelloTime
		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, you must disable stpFollowLinkState. If you are not a Windows 95 client, do nothing.

To enable or disable Spanning Tree transitions:

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

bridge stpFollowLinkState

2To enable Spanning Tree transitions, enter:

enabled

To disable Spanning Tree transitions, enter:

disabled

Displaying Bridge Information

Top-Level Menu system

ethernet	modedisplay	➧summary
fddi		➧detail
tokenring	lowLatency
tokenring		multicastLimit
➧bridge	ipFragmentation
➧bridge		stpState
ip		stpCost
snmp	trFddiMode
snmp		stpPriority
analyzer	agingTimesrRingNumber
script	stpState	srHopLimit
logout	stpPriority address

stpMaxAge stpHelloTime stpForwardDelay stpGroupAddress srBridgeNumber

➧port packetFilter vlan

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:

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

bridge port summary

OR

bridge port detail

The system prompts you for slot number(s).

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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 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 parametersEnabling Disabling DvmrpDisabling Igmp Administering IP MulticastInterfaces 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 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