Need to get traffic details on Catalyst 4500 traffic

spfister336 · ‎04-03-2008

I've got several remote sites with catalyst 4500s as their core switch. A few of them have been showing some unusual traffic patterns. How can I get more detail on what might be happening? I'd like to be able to turn on NetFlow, but I don't really have the necessary hardware. Thanks!

Istvan_Rabai · ‎04-03-2008

Hi Steven,

One approach is to use packet debugging:

debug ip packet

or

debug ip packet x

where x may be an access-list number.

With the access-list you will get the debug messages only for traffic that is allowed by the access-list.

This way you will be able to see the source and destination addresses of the packets.

If you get some useful results out of this but still need to gather more info, then please post the output and we can help you to further refine your search.

Cheers:

Istvan