Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ip wccp group-listen
ip wccp group-l isten
To configure an interface on a router to enable or disable the reception of IP multicast packets for Web
Cache Communication Protoc ol (WCCP), use the ip wccp group-listen command in interface
configuration mode. To disable the reception of IP multicast packets for WCCP, use the no form of this
command.
ip wccp {web-cache | service-number} group-listen
no ip wccp {web-cache | service-number} group-listen
Syntax Description
Defaults T his command is disable d by default.
Command Modes Interface configur ation (co nfig-if)
Usage Guidelines O n routers that are to be members of a Service Group when IP multicast is used, the following
configuration is required:
• Configure the IP multicast address for use by the WCCP Service Group.
• Configure the interfaces on which the router wishes to receive the IP multicast address with the
ip wccp {web-cache | service-number} group-listen interface configuration command.
Examples The following example shows how to enable the multicast packets for a web cache with a multicast
address of 224. 1.1.100 :
Switch# configure terminal
Switch(config)# ip wccp web-cache group-address 224.1.1.100
Switch(config)# interface gigabitethernet 3/1
Switch(config-if)# ip wccp web-cache group-listen
Related Commands
web-ca che The web cache service.
service-number WCCP service number; valid values are from 0 to 254.
Command Description
ip wccp Enables support of the WCCP service for participation in a
service group.
ip wccp check services all Enables all Web Cache Com munication Protoc ol (WCCP)
services.
ip wccp re dire ct Enables WCCP redirection on an interface.
ip wccp redirect Enables packet redirection on a n inbound or outbound inte rface
using Web Cache Communication Proto col (WCCP).