[e-nsp] Dead MSM in a Black Diamond

Fernando Krahe fernando at tche.br
Tue Oct 28 12:11:56 EST 2003

Thanks Mikael.

The environment is pretty stable. Well, rephrasing I would say it was stable
There are only two switches running layer 2 with a group of routers attached
to the same vlan. The changes in the environment occur at a low rate, so
although there are no dynamics any more, the switch is still operating as it
was before that happened.


----- Original Message ----- 
From: "Mikael Abrahamsson" <swmike at swm.pp.se>
To: <extreme-nsp at puck.nether.net>
Sent: Tuesday, October 28, 2003 12:32 PM
Subject: Re: [e-nsp] Dead MSM in a Black Diamond

> On Tue, 28 Oct 2003, Fernando Krahe wrote:
> > Have any of you seen this?
> Since forwarding is hardware ASIC based, even if the switch goes
> "braindead" (CPU hung/dead/crashed), forwarding still occurs. There will
> be no dynamics left though, no new mac address learning etc.
> Seen this happen on several occasions.
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se
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> extreme-nsp mailing list
> extreme-nsp at puck.nether.net
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