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41-5
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 41 Configuring Web Cache Services By Using WCCP
Configuring WCCP
Unsupported WCCP Features
These WCCP features are not supported in this software release:
• Packet redirection on an outbound interface that is configured by using the ip wccp redirect out
interface configuration command. This command is not supported.
• The GRE forwarding method for packet redirection is not supported.
• The hash assignment method for load balancing is not supported.
• There is no SNMP support for WCCP.
Configuring WCCP
These sections describe how to configure WCCP on your switch:
• Default WCCP Configuration, page 41-5
• WCCP Configuration Guidelines, page 41-5
• Enabling the Web Cache Service, page 41-6 (required)
Default WCCP Configuration
Table 41-1 shows the default WCCP configuration.
WCCP Configuration Guidelines
Before configuring WCCP on your switch, make sure to follow these configuration guidelines:
• The application engines and switches in the same service group must be in the same subnetwork
directly connected to the switch that has WCCP enabled.
• Configure the switch interfaces that are connected to the web clients, the application engines, and
the web server as Layer 3 interfaces (routed ports and switch virtual interfaces [SVIs]). For WCCP
packet redirection to work, the servers, application engines, and clients must be on different subnets.
• Use only nonreserved multicast addresses when configuring a single multicast address for each
application engine.
• WCCP entries and PBR entries use the same TCAM region. WCCP is supported only on the
templates that support PBR: access, routing, and dual IPv4/v6 routing.
• When TCAM entries are not available to add WCCP entries, packets are not redirected and are
forwarded by using the standard routing tables.
Table 41-1 Default WCCP Configuration
Feature Default Setting
WCCP enable state WCCP services are disabled.
Protocol version WCCPv2.
Redirecting traffic received on an interface Disabled.