[c-nsp] WS-C3750-48PS-E stackwise flap

[Jim McBurnett]

I had a problem like that- and we replaced the cable.
All was good afterwards.
We put that cable on the lab stack, and the problem reoccurred..
So I would replace the cable as a test- this kills the reset issue and a cable test with a single try.
Then if it reoccurs, then we know it to be a stack port, or just place weirdness.

At least the silver lining is that users don't know..

Jim


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of William
Sent: Wednesday, September 19, 2007 10:46 AM
To: [c-nsp]
Subject: [c-nsp] WS-C3750-48PS-E stackwise flap

Hi,

We have a pair of WS-C3750-48PS-E's in a standard stackwise configuration.

Every so often on a daily basis we get the following msg in syslog:

%STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state DOWN
%STACKMGR-6-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has changed to state UP

At one point today it was happening every 2 minutes, then stopped and
would appear a few hours later.

We are running code 12.1(19)EA1c, which is abit dated but unable to
spot any bugs that relate to this.

Has anyone spotted this before? This is a remote site so I would like
to leave the visual check/reseat of the cables last. More importantly
no users are reporting an issue when these flaps happen.

Thank you for your time.
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