RE: [SQU] More on WCCP and truncated GRE packets. --SOLVED

From: Nathan Lewis <>
Date: Thu, 14 Dec 2000 18:30:19 -0600

Dan, I believe in fact that _you_are_the_man_. This solved my problem. I
believe the problem lies in the bug report that Lincoln dug up - something
about fast switching screwing with WCCP packets. Everything seemed to be
pointing to the same place - a bug in the IOS. So I tried what you suggested:

config t
ip cep #turns on cep globally -- some systems require the command "ip cep
interface Ethernet0/0
no ip route-cache cef

#I don't know exactly what this does, because there is a "ip cef" command
under interface as well. Anyone bold enough to comment on what exactly
this does, and why it worked?

I ran the TCP dump with ip_wccp disabled, and no truncated packets came
through. So I re-enabled ip_wccp, kicked in my ipchains, and lo and
behold, it worked. I thank all of you for helping me with this problem. I
can't tell you how many times I thought about canning this project. Now I
just have to tune it, make it secure, and set it up so I never have to
touch it again.

I think these cep commands should be put into the documentation (FAQ) under
the WCCP configuration. Who do I contact to get such a thing done?

I also have a newbie question - where should I look to setup log file
rotation (for the access.log)? Is this something built into squid, or an
external daemon?

At 06:16 PM 12/13/00 -0600, Dan Williamson wrote:
>I seriously doubt this will help. But I will throw in my 2 cents anyways
>since I had a heck of a time getting WCCP to work in my system. I to got
>some help from the group, especially Lincoln.
>I am running 12.1.3 on my router. I fought with it for sometime, I then
>stumbled onto turning IP CEF on Globally. Then I turned it off on my client
>side interface.
>no ip route-cache cef
>I don't know why it worked, but I'm just glad that it did.
>Like I say, doubt it will help, but it did work for me.

Nathan Lewis

Senior Network Administrator

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Received on Thu Dec 14 2000 - 17:32:36 MST

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