[Info-vax] PEA0: Errors

Christoph Gartmann gartmann at nonsense.immunbio.mpg.de
Thu Mar 5 10:04:48 EST 2009


In article <003d46c3$0$28517$c3e8da3 at news.astraweb.com>, JF Mezei <jfmezei.spamnot at vaxination.ca> writes:
>If the problem is getting worse, the switch might give your some info.
>Is this a managed switch you can log into and get information about
>ports ?

Yes, the switch tells something about excessive collisions and drop rates.

>This may sound stupid, but are the cable app properly connected ? You
>could have a connector that is loose (either within the other connector,
> or the cable is loose within the connector).

Meanwhile I think I found the reason: the packet sniffer shows that it is an
antispam box that produces huge amounts of illegal tcp sequence numbers every
37 minutes so that the switch gets overwhelmed :-( This box communicates
with one of the cluster members in order to deliver mail.

Regards,
   Christoph Gartmann

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