[c-nsp] tcpdump on ios?

Saku Ytti saku+cisco-nsp at ytti.fi
Sat Jan 12 13:29:38 EST 2008


On (2008-01-12 10:42 -0500), Luan Nguyen wrote:

> But on a simple router, to track down a problem for a few seconds...
> no logging console
> logging buffer xxxx debugging
> no ip route-cache on interfaces
> access-list to match or set interface condition
> debug ip packet detail <access-list> (dump).
> 
> would do fine?

Since new CEF code in 12.2S, in software platforms using CEF 
for switching you can debug CEF switched packets virtually 
for free (as well as mirror, which was already mentioned
in the thread earlier). Debugging is not surprisingly 'debug ip cef packet
..'.

Thanks,
-- 
  ++ytti


More information about the cisco-nsp mailing list