[afnog] More than one squid proxy server with WCCPv2

[Mark Tinka]

On Friday 04 November 2005 13:44, gittas at mtn.co.ug wrote:
> Hi All,

Hello.

>
> Has anyone done Cisco WCCPv2 with more than one squid
> cache engine? Assist me with the squid & Cisco configs.

Read this link first:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008020211d.html#wp1000887

Generally, you'll configure your Squid boxes to talk to 
your router. The router will then setup a relationship 
with your Squid cluster. You can have up to 32 Squid 
boxes talking to one router when working with WCCPv1.

WCCPv2 support for Squid is still hazy. There is a patch 
for Squid, but I cannot guarantee it will work. I know 
several commercial cache boxes support WCCPv2.

Typical IOS configuration for WCCPv1:

conf t
 ip wccp version 1
 ip wccp web-cache
 !
 int fa0/0 <-- assuming customers come in on this one
  ip wccp web-cache redirect in

Typical Squid (2.3+) configuration for WCCPv1:

httpd_accel_port 80
httpd_accel_host virtual
httpd_accel_with_proxy on
httpd_accel_uses_host_header on
wccp_router a.a.a.a
wccp_version 4

	where a.a.a.a = the source IP address of WCCP packets
                        from your router. This should be 
                        exact or the WCCP session won't
                        come up.

Of course, you need to remember that WCCP must be 
supported in your OS of choice. FreeBSD supports it, the 
Linux kernel recently got native support after kernel 
2.6.9 was released.

You may also look at:

http://info.ccone.at/INFO/Squid/FAQ-17.html

for more help.

Good luck,

Mark.
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