Re: [squid-users] CentOS/Squid/Tproxy but no transfer

I Checked the packages using tcpdump and it seems that the router and
cache machine have no problem communicating via WCCP:
8.061995 xx.xx.241.40 xx.xx.241.39 WCCP 2.0 Here I am
8.062036 xx.xx.241.40 xx.xx.241.39 WCCP 2.0 Here I am
8.065416 xx.xx.241.39 xx.xx.241.40 WCCP 2.0 I see you
8.066978 xx.xx.241.39 xx.xx.241.40 WCCP 2.0 I see you

So there must be something wrong with GRE connection or Inbound/Outbound
routing.

Step 35 and related squid.conf's configuration in step 33 seems kinda
tricky; Based on service identifier's config in squid.conf (step 33)
and the Note following step 35 (ip wccp 80 redirect-list 122) I
concluded that service identifier 80 is the service identifier of
packets which are incoming from client to the router and therefore
service identifier 90 is for packets which suppose to return to client.

Configuration in this message confirms that;
http://www.mail-archive.com/squid-dev@squid-cache.org/msg04302.html
Even though destination and source flags inversed in the configuration
above (and it got three interfaces that I'm not sure about necessity of
them), dedication of service identifiers changed as well; service
identifier 80 changed to the "gateway to Internet" and service
identifier 90 did set as "client gateway".

I did test all of these (with two interfaces but no traffic coming back
to the client). Dead end!
Any suggestion?

ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
ROM: C2600 Software (C2600-IS-M), Version 12.2(11)T8, RELEASE SOFTWARE
(fc1)

xx10.6 uptime is 1 day, 2 hours, 52 minutes
System returned to ROM by power-on
System image file is "tftp://xx.xx.241.121/c2600-ipbasek9-mz.124-17.bin"

Behnam.

Ritter, Nicholas wrote:
> Behnam-
>
> The router is either not seeing the WCCP registration from the squid
> box, or the squid box is not seeing the ack from the router. Tom's
> suggestion of "debug ip wccp" is a good start.
>
> The IOS version makes a huge difference. Between revisions of IOS, WCCP
> works and/or breaks, so it is something you have to play with to know
> which IOS works. The specific 12.4 releases I have used work...but on a
> 26xx series router you may not have enough flash and/or RAM for 12.4.
>
> Nick
>
>
Received on Sun Jul 12 2009 - 17:10:05 MDT