Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ip wccp group-listen
ip wccp group-listen
To configure an interface on a router to enable or disable the reception of IP multicast packets for Web
Cache Communication Protocol (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 This command is disabled by default.
Command Modes Interface configuration (config-if)
Command History
Usage Guidelines On 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
web-cache The web cache service.
service-number WCCP service number; valid values are from 0 to 254.
Release Modification
12.2(31)SG Support introduced on the Catalyst 4500 series switch.
IOS XE 3.2(0)SG
(15.0(2)SG)
Support extended to Supervisor Engine 6-E, Supervisor Engine 6L-E,
Catalyst 4900M, and Catalyst 4948E.
IOS XE 3.3.0 SG
(15.1(1)SG)
Supported extended to Supervisor Engine 7-E and Supervisor Engine
7L-E.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E