[c-nsp] Cisco 2960G Issue

[Mike Cooper]

Hi all,

I've got a WS-C2960G-24TC-L switch running IOS 12.2(35)SE5

It's been in production for a couple of weeks in a fairly straight 
forward L2 environment.

We noticed this afternoon a few hosts connected to the switch suffering 
persistent packet loss of ~20%

After a bit of investigation we narrowed it down to ports 5, 6, 7, 8. 
The ports were configured as access ports, 1 @ 10M/FD 3 @ 1G/FD, all 
were in different vlans. My assumption is the switch runs six ASICs, and 
that the one that operates those 4 ports has faulted or degraded in some 
way causing the performance issues.

None of the other machines connected to the switch were affected, and 
currently the switch is still operating.

I've since relocated the affected machines to an alternate switch, 
resolving the loss issues.

I'm interested if anyone is aware of this as a common problem with 2960G 
switches (or any switches for that matter), and if there are any tips 
for testing/troubleshooting before I return it as faulty. I bought 4 
brand new 2960Gs in one go, 1 was DoA, and now this one has developed 
faults which is leaving me with some concerns for the others.

Cheers,

--Mike