[squid-users] Squid with wccp and gre return

[Amos Jeffries]

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On 2/11/2014 7:05 a.m., Yogesh Gawankar wrote:
> Hello
> 
> 
> I am trying to get squid to send return traffic to the cisco
> router via  a gre tunnel. I am observing that squid returns traffic
> in gre tunnel  this is ip in ip gre not wccp-gre . The firewall is
> dropping this packet as expected. I have gone through many posts
> online so kindly respond if you know how to get it to send return
> traffic via wccp-gre (not standard gre) or if you had any
> suggestions for me in terms of linux  kernel change.

WCCP-GRE is for transmitting WCCP protocol control packets informing
the router whether the proxy is still available or not. That is all.

The HTTP traffic from router to Squid (wccp_forwarding_method) goes
through the GRE as if it were regular GRE.

The HTTP traffic from Squid to router (wccp_return_method and regular
Squid->Internet connections) is normal traffic and needs routing as
such instead of dropping or diverting back towards Squid.

Amos
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