• UDP port 2048
• content engines also communicate with each other using WCCP
• Up to 32 content engines WCCPv1; lowest IP address – lead engine
• Content engines request information on the cluster members from the WCCP
  router, which replies with a list. This permits the lead content engine to determine how
  traffic should be distributed to the cluster.
• WCCPv1 – only HTTP port 80
• WCCPv2:
  • TCP and UDP traffic other than TCP port 80 (FTP, Real Audio, Video)
  • Permits segmenting caching services provided by a caching cluster to a particular
    protocol or protocols
  • Supports multicast
  • Supports multiple routers (up to 32 per cluster)
  • MD5
  • Load distribution
  • Transparent error handling

ip wccp web-cache group-address 239.128.1.100 password cisco
! Next we configure an interface to redirect WCCP web-cache
! traffic outbound to a content engine:
int fa0/0
           ip wccp web-cache redirect out
! Finally, inbound traffic on interface fa0/1 is excluded from redirection:
int fa0/1
         ip wccp redirect exclude in
! filter traffic only for certain clients
ip wccp web-cache redirect-list access-list
! types of redirected traffic the router should accept
ip wccp web-cache group-list access-list