Excluding Traffic On A Specific Interface From Redirection - Cisco 6500 Series Software Configuration Manual

Chapter 35 Configuring Web Cache Services Using WCCP
Note •
•
As indicated by the out and in keyword options in the ip wccp service redirect command, redirection
can be specified for outbound interfaces or inbound interfaces.
Inbound traffic can be configured to use Cisco Express Forwarding (CEF), distributed Cisco Express
Forwarding (dCEF), Fast Forwarding, or Process Forwarding.
Configuring WCCP for redirection for inbound traffic on interfaces allows you to avoid the overhead
associated with CEF forwarding for outbound traffic. Setting an output feature on any interface results
in the slower switching path of the feature being taken by all packets arriving at all interfaces. Setting
an input feature on an interface results in only those packets arriving at that interface taking the
configured feature path; packets arriving at other interfaces will use the faster default path. Configuring
WCCP for inbound traffic also allows packets to be classified before the routing table lookup, which
provides faster redirection of packets.
Specifying a Web Cache Service
To configure a web-cache service, perform this task:
Command
Step 1
Router(config)# ip wccp web-cache
Step 2
Router(config)# interface type number
Step 3
Router(config-if)# ip wccp web-cache redirect
{out | in}

Excluding Traffic on a Specific Interface from Redirection

To exclude any interface from redirecting inbound traffic, perform this task in global configuration
mode:
Command
Step 1
Router(config)# interface type number
Step 2
Router(config-if)# ip wccp redirect exclude in
78-14099-04
A future release of Cisco Application and Content Networking System (ACNS) software (Release
4.2.2 or later) and Release 12.1(13)E and later releases support the ip wccp service accelerated
command with a PFC2.
Release 12.1(13)E and later releases support the ip wccp service redirect in interface command in
software on the MSFC2.
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
Purpose
Enables the web cache service on the router.
Targets an interface number for which the web cache
service will run, and enters interface configuration mode.
Enables the check on packets to determine if they qualify
to be redirected to a web cache, using the interface
specified in Step 2.
Purpose
Specifies an interface to configure, and enters interface
configuration mode.
Allows inbound packets on this interface to be excluded
from redirection.
Configuring WCCP
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