RE: [squid-users] CISCO + WCCP Stopping forward packets

I have not noticed other faqs requiring this, but make sure your iptables is allowing UDP port 2048 on the Ethernet and gre interfaces of the squid box and coming from the IP address listed in the "sh ip wccp" (the router identifier IP.)

Also, update you IOS. The loss of the hello packets is the problem, but the reason behind the packet transmission loss is the mystery. You can try running a packet sniffer on the squid box to make sure it is sending the "Here I am" packets, are increase the debug level of squid to see them.

My experience as been that the problem is on the Cisco side though.

-----Original Message-----
From: alexmontoanelli_at_gmail.com [mailto:alexmontoanelli_at_gmail.com] On Behalf Of Alex Montoanelli
Sent: Monday, May 04, 2009 8:57 AM
To: Ritter, Nicholas
Subject: Re: [squid-users] CISCO + WCCP Stopping forward packets

Hello Nicholas.

When the service break down, the related fields, are not 0, is equal
1/1. ( 1 Client / 1 Router ).

I have setting up a router to log to a syslog server, and when the
issue occur, the packets/messages are not transmited.

My router, a Cisco 2811 has running a
'flash:c2800nm-ipbase-mz.124-21.bin' / 12.4-21 IOS Version.

On Mon, May 4, 2009 at 10:45 AM, Ritter, Nicholas
<Nicholas.Ritter_at_americantv.com> wrote:
>
> Two things you can do:
>
> 1) When the wccp service breaks as you describe, do a "sh ip wccp" on
> the router, make sure that "Number of Service Group Clients" and "Number
> of Service Group Routers" are both no zero.
>
> 2)
>
> On the router:
>
> Debug ip wccp
>
>  - make sure your logging is set to debug level on the router
>
> What for the "Here I am" and "I see you" packets, which identifies that
> the router and the squid box see each other.
>
>
> One important thing, make sure you router is running the most recent
> version of IOS...different revisions have WCCP problems come and go. I
> have been running 12.4(15)T8 without problems for months.
>
> I was running various sub releases of 12.4 and had problems...but
> 12.4(15)T8 seems stable.
>
> Nick
>
>
> -----Original Message-----
> From: alexmontoanelli_at_gmail.com [mailto:alexmontoanelli_at_gmail.com] On
> Behalf Of Alex Montoanelli
> Sent: Monday, May 04, 2009 7:13 AM
> To: squid-users
> Subject: [squid-users] CISCO + WCCP Stopping forward packets
>
> Hello all.
>
> I have a FreeBSD Box, running Squid Version 2.7.STABLE6-20090306, with
> WCCP2 features on, with my Cisco Router 2811.
>
> It's running fine, but after a few hours, the traffic is not forwarded
> from Cisco do Squid Box.
>
> I don't see any packet on gre0 and a 'show ip wccp' in Cisco, has not
> increment counters from redirected packets.
>
> In my logs (cisco e squid) I could not get nothing;
>
> someone has been there?
>
> Regards
>
> Alex Montoanelli
>
>
Received on Mon May 04 2009 - 14:35:28 MDT