RE: CEF debugging question

Umm... why would you want to debug if the cpu is already pegged? This
sounds like it may not end well. Also, I don't think you can debug cef
traffic. It was invented not to go to the processor so you would have to
turn cef off to see anything. If you do a sh proc cpu what process is
using the most resources?

From:
Darrin Machay <darrin.machay_at_yjtsolutions.com>
To:
Usama Pervaiz <chaudri_at_gmail.com>
Cc:
"ccielab_at_groupstudy.com" <ccielab_at_groupstudy.com>
Date:
01/12/2010 04:43 PM
Subject:
RE: CEF debugging question
Sent by:
<nobody_at_groupstudy.com>

The easiest way to see what's going on is to span RP-inband and use a
sniffer like WireShark to take a look at the punted packets.

See the section "SPAN RP-Inband and SP-Inband":
http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml

Assuming you want to use span session 1:
rtr# remote login switch
rtr-sp# test monitor add 1 rp-inband [rx | tx | both]

Darrin Machay

YJT Solutions
440 South LaSalle St, Suite 3990
Chicago, IL 60605
www.YJTSolutions.com

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Usama Pervaiz
Sent: Tuesday, January 12, 2010 2:24 PM
To: ccielab_at_groupstudy.com
Subject: OT: CEF debugging question

Hello all,

I am trying to debug CEF on a 6509. I want to know what traffic is
being punted to processed switched. Is there an easy show command that
i can use. I have tried:

sh ip cef switching statistics feature
sh cef not-cef-switched

but they only give me stats not what I am looking for.

I am doing this becuase my CPU is taking a beating and I think it is
because CEF is punting these packets down and hence killing my router.

Any and all help would be appreciated.

Thanks!
Usama

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Received on Tue Jan 12 2010 - 17:59:42 ART