[c-nsp] 2970 turns into a hub for a few moments

[Vincent De Keyzer]

Hi Gert,

Happy New Year to you.

If I follow your idea, I have to conclude that the Packet Filters are either
causing more instability, or increasing the impact of previously unnoticed
instability (because the occurrences of the problems are *very well*
correlated with the PFs being turned on).

I am planning to bring the switch ports of the PFs back on with
"spanning-tree portfast trunk", and, if that does not fix the problem, trace
the TC source immediately when problem occurs.

Thanks to all for your help so far (will post a final word to this story
when I find one).

Vincent

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Gert Doering
> Sent: mardi 2 janvier 2007 16:24
> To: Vincent De Keyzer
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 2970 turns into a hub for a few moments
> 
> Hi,
> 
> On Tue, Jan 02, 2007 at 04:04:55PM +0100, Vincent De Keyzer wrote:
> > But then, what's the catch? It's OK for me to configure 'spanning-tree
> > portfast' on all access ports, but why has it been working OK up to now,
> and
> > why has this suddenly become an issue with the Packet Filters?
> 
> Chances are that you either didn't notice the flooding ("been there,
> done that" :) ) - or that you didn't have so much link instability on
> access ports (so "less TC, less flooding")...
> 
> gert
> 
> --
> USENET is *not* the non-clickable part of WWW!
> 
> //www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-
> muenchen.de
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