Re: [squid-users] WCCP Module for WCCP Version 2

On Thu, Mar 15, 2007, Martin Kobele wrote:
> Hi,
>
> this is interesting now.
>
> the kernel is configured to compile IPGRE right into the kernel. Not as a
> module.
> I do the following steps:
>
> modprobe ip_wccp
> iptunnel add gre1 remote 192.168.3.21 local 192.168.3.20 dev eth0
> ifconfig gre1 127.0.0.2 up
>
> Everything works fine with this setup.
> Even if I do ifconfig gre1 down
> it still works.

The GRE code in FBSD/Linux is just a bit of code that handles IP protocol 47
(ie, GRE) and special cases the WCCPv2 decapsulation.

> So ip_wccp does not need the GRE tunnel, which is what Henrik said long time
> ago ;)
>
> But removing ip_wccp and having the GRE tunnel does not work for me.
>
> So for me, using ip_wccp just by itself works fine. Cool.
>
> What protocol does ip_wccp use?
> Does it setup it's own GRE thing?

ip_wccp will just register for protocol 47 and decapsulate WCCPv2 GRE frames,
feeding them to the kernel for normal processing.

HTH,

Adrian
Received on Thu Mar 15 2007 - 07:38:12 MDT