Re: Fast aging of trunk MAC ?

From: Carlos G Mendioroz <tron_at_huapi.ba.ar>
Date: Wed, 27 Jan 2010 16:15:27 -0300

Marko Milivojevic @ 27/01/2010 16:00 -0300 dixit:
>> In any case, I don't see what could be causing fast aging of HSRP only.
>> Read, this sounds like there is a hidden trigger, one I do not know
>> about and may be missfiring.
>
> I agree, this looks unusual. What IOS are you running? Could you be
> dealing with a genuine bug?

System image file is "flash:c3550-ipservicesk9-mz.122-50.SE3.bin"

In any case, I don't remember any HSRP specific MAC aging feature
anywhere. Is there one ?
I saw a somewhat related issue on a 6k, but that was bug related
and had to do with a module, AFAIK.

>
>> My first change was the HSRP group, cause the switch has another HSRP
>> group in a different vlan. Moging the group id to a new (different MAC)
>> did not help.
>
> What about manually setting HSRP MAC?

Being that the problem persisted after changing the group (and MAC),
I did not follow that route any longer.

>
>> Thanks, may be the issue shows up somewhere else some other time.
>> As someone here said, may be this is abuding GS but I guess that being
>> exposed to this sort of things is good.
>
> I don't see abuse. Fun things like this are always interesting to look
> into. However - there could be a better place to ask, more production
> oriented. Have you tried posting this on c-nsp?

Nope, I'm not a constant reader of c-nsp, should I become one ?

-Carlos

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net
Received on Wed Jan 27 2010 - 16:15:27 ART

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