[nsp] Odd packet loss

[Darren Smith]

Hi folks

Just wondering if anyone is using Cisco 7401's?

we're currently on 12.2(4)B3 and have noticed some rather odd behavior a day
after applying an access list that basically denies ICMP to a certain subnet
(irc) and permits everything else.

Not 100% sure if the ACL was the cause, nothing else has changed.

 1  ge1-1.th1.uk.as21099.net (213.221.179.125)  21.655 ms  17.575 ms  19.553
ms
 2  * linx-1.vianw.net (195.66.224.28)  16.449 ms  34.034 ms
 3  * rt001thl.uk.vianw.net (213.2.253.6)  461.486 ms  917.751 ms
 4  * rt001wcr.uk.vianw.net (195.102.254.150)  25.384 ms  26.758 ms
 5  * 213.2.52.22 (213.2.52.22)  25.947 ms *

It appears not just icmp is loosing packets, but TCP sessions have been
affected badly as well.

Anyone had anything similar?

Regards

Darren Smith
Game Digital ltd