Using Access Lists For A Wccp Service Group; Setting A Password For A Router And Cache Engines - Cisco 7609 Configuration Manual

Configuring WCCP
Command
Step 2
Router(config)# interface type number
Step 3
Router(config-if)# ip wccp {web-cache |
service-number} group-listen
For network configurations where redirected traffic needs to traverse an intervening router, the router
being traversed must be configured to perform IP multicast routing. You must configure the following
two components to enable traversal over an intervening router:
•
•

Using Access Lists for a WCCP Service Group

To configure the router to use an access list to determine which traffic should be directed to which cache
engines, perform this task in global configuration mode:
Command
Step 1
Router(config)# access-list access-list permit ip
host host-address [destination-address |
destination-host | any]
Step 2
Router(config)# ip wccp web-cache group-list
access-list
To disable caching for certain clients, perform this task in global configuration mode:
Command
Step 1
Router(config)# access-list access-list permit ip
host host-address [destination-address |
destination-host | any]
Step 2
Router(config)# ip wccp web-cache redirect-list
access-list

Setting a Password for a Router and Cache Engines

MD5 password security requires that each router and cache engine that wants to join a service group be
configured with the service group password. The password can consist of up to seven characters. Each
cache engine or router in the service group will authenticate the security component in a received WCCP
packet immediately after validating the WCCP message header. Packets failing authentication will be
discarded.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
35-10
Enable IP multicast routing using the ip multicast routing interface configuration command.
Enable the interfaces to which the cache engines will connect to receive multicast transmissions
using the ip wccp group-listen interface configuration command (note that earlier Cisco IOS
versions required the use of the ip pim interface configuration command).
Chapter 35 Configuring Web Cache Services Using WCCP
Purpose
Specifies the interface to be configured for multicast
reception.
Enables the reception of IP multicast packets (content
originating from the cache engines) on the interface
specified in Step 2.
Purpose
Creates an access list that enables or disables traffic
redirection to the cache engine.
Indicates to the router from which IP addresses of cache
engines to accept packets.
Purpose
Creates an access list that enables or disables traffic
redirection to the cache engine.
Sets the access list used to enable redirection.
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