Wccp - Cisco WS-C6506 Software Manual

Chapter 56 Configuring the MSFC Cisco IOS Features

WCCP

In Release 12.2(18)SXE where caveat CSCec55429 is resolved, after a number of Web Cache
Communication Protocol (WCCP) "cache lost" and "cache found" events have occurred for all the
caches in a service group, spurious memory accesses might occur, the addition and deletion of WCCP
services might fail, and the show ip wccp command displays the WCCP service, but the output of the
show ip wccp service_number command does not show the WCCP service. This problem is resolved in
Release 12.2(18)SXE.
Configuring WCCPv2 on a Supervisor Engine 720 causes high CPU utilization. This problem is resolved
in Release 12.2(18)SXD4.
Network Address Translation (NAT) does not work with WCCP configured. This problem is resolved in
Release 12.2(18)SXD1.
WCCP-redirected packets that have no next-hop ARP cache entry are process switched to generate an
ARP request, but because of the WCCP redirection, no ARP request is sent and the ARP cache is never
populated for the next hop and subsequent WCCP-redirected packets continue to be process switched.
This problem is resolved in Release 12.2(17d)SXB2.
For more information about Web Cache Control Protocol (WCCP) support with Supervisor Engine 720,
refer to this URL:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/
wccp.html
For more information about Web Cache Control Protocol (WCCP) that is supported only with Supervisor
Engine 2, refer to this URL:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/
wccp.html
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
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