[c-nsp] tcpdump on ios?

Luan Nguyen luan.m.nguyen at gmail.com
Sat Jan 12 10:42:49 EST 2008


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?

-lmn

On Jan 12, 2008 8:04 AM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Sat, Jan 12, 2008 at 03:21:09AM +0200, Kim Onnel wrote:
> > if we are talking about hardware switching platforms then i believe it
> makes
> > sense that it will only sniff process switched traffic, so why is it
> useless
> > then?
>
> If you have process switched traffic, something is wrong with your
> network setup.  Some features just plain do not work without CEF (like
> "MPLS"), others are horribly slow or cause insane amount of CPU load.
>
> > IMHO, it is very difficult to design a router that will capture traffic
> > being hardware switched, am i correct?
>
> SPAN/RSPAN/ERSPAN exit and work very well :-)
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>
> //www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>
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