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> Sheesh, that _really_ sucks!! How did you diagnose that the switch was the
> issue? What switch were/are you using?
I did a tcpdump on the servers and analyzed the IPs and the MAC
addresses. From time to time the dump at host A showed incoming packages
with the destination MAC address of host B, although ARP worked
properly. I asked our hosting facility to reset the switch. A couple of
resets later, the switch decided to drop ARP replies from host B
completely (but the requests were sended).
After the facility guys changed the switch from a Cisco to a 3com
(sorry, don't know exact model identifiers) the weird packets were gone.
I can't estimate the impact of this issue to our general problem, but it
explained some special complaints from our users.
Jan
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