This How-To details the steps required to configure WCCP version 2 with a Cisco 3620 or 7206 router together with Squid-2.6.STABLE18 running on FreeBSD-6.2.
Cisco’s WCCP (Web Cache Control Protocol) version 2 is used for sending web requests from clients to 1 or more Squid proxy servers. WCCP feature allows us to redirect Web traffic to our proxy servers which in turn provides Web caching, filtering, or other services, thus reducing transmission costs and downloading time.
With WCCP, we can build a “cache cluster” for load balancing, scaling, and fault tolerance.
For example, in the case of 2 proxy severs, if 1 proxy server goes down, WCCP redirects clients requests to the 2nd working proxy server.
In the rare circumstance where both or all of your proxy servers should go down, WCCP will determine the dead proxy servers and will route clients web requests directly from your cisco router.
Note: Only Cisco IOS Release 12.1 and later releases allow the use of either Version 1 (WCCPv1) or Version 2 (WCCPv2) of the WCCP.
