we just recently change the core switch from cat 5000 to cat 6506..after 2 days we experience a number of connnection problem...(eg. pinging shows intermittent, timeout, sometimes ok) we have replaced the network card and its ok..the 6500 is just on layer 2 still and the ports are on their default settings...
i dont think core switch contributed this problem but just worrying around 8 network cards given the same problem today and dont know wat will happen tommorow....net cards are 3com 3c905c-tx-m...
the admin said there is a nachi virus on the network, but changing the network card with same model and using also the existing operating system is solving the problem.
what do you think is the issue in here because the customer is blaming it now on the new core switch 6500 and wanting us to put back the old 5000
If it's solved replacing the NICs I think nothing to say about 6500. Anyway, you can check you've used the same port settings when migrating to 6500 (speed/duplex settings especially). You can try to use manual speed / duplex settings on oth host and switch sides.
"Cat6506> (enable) sh2003 Dec 25 13:56:44 %SYS-2-MOD_NOINBANDRESPONSE:Module 1 no
t responding over inband
2003 Dec 25 13:56:44 %SYS-2-MOD_INBANDTEST:Module 2 error detected ... testing
2003 Dec 25 13:56:44 %SYS-2-MOD_INBANDTESTOK:Module 2 test ok. Check possible fa
ult in standby supervisor.
2003 Dec 25 13:57:10 %SYS-2-MOD_INBANDOK:Module 1 inband ok"
In this scenario, the module 2 was the active supervisor.
What Ive done after seeing this error is Ive rebooted the core and the module 1 has become the active. And this has solved the problem on the network cards. But am still observing it.
But the ff. are still questiuonable on me;
1. the error i could see is just some inband things.
2. Is module 1 supposed to be the active supervisor all the time unless it fails. I said this because originally mod 1 was the active and ive reset it just to see that redudndancy is working. It has remained on this status since then. It is in this case (mod 2 active) where i saw the above error and causing lots of timeouts on numbers of hosts.
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