[e-nsp] Dead MSM in a Black Diamond

[Fernando Krahe]

Thanks Christian.

This switch is also running as the switching fabric of an IX. There are two
BDs for redundancy. The other one is running fine. We scheduled a
maintenance window for tonight, when the traffic is much lower.
We will run diagnostics on it.

Fernando

----- Original Message ----- 
From: "Christian Panigl, ACOnet/VIX/UniVie" <panigl at cc.univie.ac.at>
To: <fernando at tche.br>
Cc: <extreme-nsp at puck.nether.net>; <panigl at cc.univie.ac.at>
Sent: Tuesday, October 28, 2003 12:21 PM
Subject: RE: [e-nsp] Dead MSM in a Black Diamond


>     Hi Fernando,
>
>     that sounds scary, hope you do have a saved copy of your config ;-(
>
>     We have been running EW6.2.2b18 on a BD for quite a while at the
Vienna
>     Internet eXchange. The main problem we had was that it's occasionally
>     producing phantom HW warnings which are not always clearly
>     distinguishable from real HW warnings.  We had one instance of a
failing
>     master MSM, however, the failover to the slave MSM worked nicely as
>     expected.
>
>     On TAC recommendation we recently upgraded one of our BDs to
EW6.2.2b134
>     which is now producing (at least) different phantom HW warnings :-(
>
>     If you have a support contract I'd suggest that you call them asking
for
>     a replacement MSM with a pre-installed config, which you should send
>     them in advance.  I don't see good chances that a failover including a
>     synced config will work if your master console is not responding.
>
>     During a maintenance window you should then do
>
>     # run diagnostics extended
>     # run diagnostics packet-memory
>
>     on every interface module (disrupting traffic on the resp module)
>     and on the MSMs (which reload afterwards)
>
>     be aware that every instance takes a couple of minutes !
>
>     Good luck
>     CP
>
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