[c-nsp] Strange behaviour of 3660

[Farhan Jaffer]

hi,

I m using cisco c3660 router with IOS version 12.1(5)T5 & from last 2-3
weeks it behaves abnormally.
I cannot even ping the router's fastethernet interface, interface is up
during this time, but not on the network. After few hours, it works normal.
It completely isolate from the entire network.
I have tried p-t-p ips during this time but the result is none.
Any idea?

Thanks

Regards
Farhan Jaffer