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debugging stp problem on C2950


I'm trying to debug an intermittent STP problem in an L2 network with a combination of C2924XL-EN and C2950-24 switches.

I see the following error:

ds-17-19.p 6483: 1y18w: %RTD-CLUSTER_MEMBER_1-1-ADDR_FLAP: FastEthernet0/1 relearning 17 addrs per min

I've found the documentation that deals with this message. I should try and trace the problem to the correct ethernetports using the 'debug ethernet-controller addr' command. This works fine on the C2924XL-EN switches, but the C2950-24 does not recognize the 'address' flag:

17.19-trunkswitch#debug ethernet-controller ?

phy Ethernet Controller PHY

stp Ethernet Controller Spanning Tree

vlan Ethernet Controller VLANs

What is the equivalent of the 'address' flag on the C2950-24 ??



17.19-trunkswitch#sh ver

Cisco Internetwork Operating System Software

IOS (tm) C2950 Software (C2950-C3H2S-M), Version 12.0(5.3)WC(1), MAINTENANCE INTERIM SOFTWARE

Copyright (c) 1986-2001 by cisco Systems, Inc.

Compiled Mon 30-Apr-01 07:56 by devgoyal

Image text-base: 0x80010000, data-base: 0x8031A000

ROM: Bootstrap program is CALHOUN boot loader

17.19-trunkswitch uptime is 22 weeks, 5 days, 4 hours, 13 minutes

System returned to ROM by power-on

System restarted at 09:50:57 UTC Thu Feb 7 2002

System image file is "flash:c2950-c3h2s-mz.120-5.3.WC.1.bin"

cisco WS-C2950-24 (RC32300) processor (revision 02) with 22260K bytes of memory.

Processor board ID FAB0519Q1J6

Last reset from system-reset

Processor is running Enterprise Edition Software

Cluster command switch capable

Cluster member switch capable

24 FastEthernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address: 00:05:DC:CD:BA:40

Motherboard assembly number: 73-5781-08

Motherboard serial number: FAB0519A28K

Model revision number: 02

Model number: WS-C2950-24

System serial number: FAB0519Q1J6

Configuration register is 0xF


Re: debugging stp problem on C2950

Per the following link, the command should function:

Ensure you are ussing 'addr' and not the full 'address' command. Also, it may be a hidden command.

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