[nsp] How do I disable layer3 processing on a cat6k or cat4k that are i n layer 2 mode?

[Don Bowman]

From: Don Bowman [mailto:don@sandvine.com]
> Sent: January 6, 2003 13:00
> To: cisco-nsp@puck.nether.net
> Subject: [nsp] How do I disable layer3 processing on a cat6k or cat4k
> that are i n layer 2 mode?
> 
> I have a cat6k (running hybrid), and a cat4k (running IOS).
> Both are being used in layer2 mode.
> 
> I would like to be able to send packets through that are
> IP, but have errors in the IP header (its a test lab).
> e.g. bad ip checksum, bad ip length, etc. These are addressed
> with ethernet mac learning only.
> 
> I'm finding these are dropped by the switch, but no counter
> seems to go up.

http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCdu25724 :
"Valid L2 frames with inconsistent IP Total Length are dropped"

is the answer. ie you can't.

--don