3Com 3CB9LF36RL, 3CB9LF36T, 3CB9LG9MC LoopDetectMode loopDetectSrcAddress Enable 08-00-8f-75-48-86

Page 17

Loop Detection 17

When the module disables a front-panel port to eliminate a loop, you must bring the port back online manually.

Example:

CB9000@slot 5.1 [36L-E/FEN-TX-L2] (): bridge

Menu options (CoreBuilder 9000-10AD6C):

----------------------------------------

display	- Display bridge information
agingTime	- Set the bridge address aging time
cos	- Administer COS priority queues
port	- Administer bridge ports
multicast	- Administer multicast filtering
vlan	- Administer VLANs
loopDetectMode	- Set Loop Detect mode
learnMode	- Set the bridge learning mode

CB9000@slot 1.1 [36L-E/FEN-TX-L2] (bridge): loopdetectmode

Enter new value (disable,enable,immediate) [disable]: enable

CB9000@slot 1.1 [36L-E/FEN-TX-L2] (bridge): display

agingTime	mode	addrTableSize
300	bridgeRepeater	138
addressCount	peakAddrCount	learnMode
2	4	normal
multicastLimit	broadcastLimit	floodLimit
50000	50000	50000

loopDetectMode loopDetectSrcAddress

enable 08-00-8f-75-48-86

CB9000@slot 1.1 [36L-E/FEN-TX-L2] (bridge/port): summary 1

rxFrames	rxDiscards	txFrames
5301100	0	2688802

portNumber loopDetectStatus

1loop detect

learnStatus addressLimit

active4

Image 17

Contents CoreBuilder Release Notes 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Release Issues Software Installation Page Overview Management Information Bases MIBs System Boot CodeRequirements Operational Code3CB9LG9MC RedundancyIgmp Release HighlightsWeb-based CoreBuilder 9000 Enterprise SwitchManagement Software CDNew Modules ISO Date and TimeFormat Snooping 10/100 Mbps Ethernet Port Monitoring Querying CoreBuilder 9000 Implementation Guide for more details 802.1p CoSLoop Detection Release Highlights LoopDetectMode loopDetectSrcAddress Enable 08-00-8f-75-48-86 LoopDetectStatus Addresses Bridge AddressLearning Limits Secure Address Learning ModeAddresses are taken from the per-port address allocations See the previous section Bridge Address Learning LimitsSecure Address Learning Mode Vlan Multicast, BroadcastFlood Rate Limiting Vlan as the arriving packetMulticastlimit Limiting is on a per-port basis only Release Highlights Corrected Problems Release IssuesSystem ManagementWhenever a non-switch fabric module is reset with Staging VLANsWeb-based System Issues Model Number 3CB9LF36RL or 3CB9LF36TL to act as an Igmp Modules have only one backplane portModule TrunkingSystem Issues Release Issues Known Problems Release Issues Known Problems Modify command Administration Console of the 36-port 10/100BASE-TX FastNot reset after you enter the module baseline set command If a trunk is configured on a module, the following fieldsKnown Problems Documentation DocumentationChanges Software Installation At the EME prompt, enter ChassisOrder specified in the following procedure Your module for guidelines and proceduresVerifying ModulesFollowing procedure explains how to download software Power to these module slotsSoftware next in this chapter ModulesShow module slot.all verbose From the EME, connect to the module You must complete to ensure that the module is updated Downgrading Switching Modules to Software Release Reference SwitchIdentifying Modules3CB9LG2MC Documents ApplicableMIB Files CoreBuilder 9000 Implementation GuideReference Autonegotiation Entering CommandsUnderstanding 3Com Year 2000 Web YearCompliance Services ServicesTechnical Support Online TechnicalModem Isdn 24 hours a day, 7 days a week Access by Analog ModemUsername anonymous 408 727 Access by Digital Modem847 262 Europe Country Telephone Number North America