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 igmp snooping
ip igmp snooping
To enable IGMP snooping, use the ip igmp snooping command. To disable IGMP snooping, use the no
form of this command.
ip igmp snooping [tcn {flood query count count | query solicit}]
no ip igmp snooping [tcn {flood query count count | query solicit}]
Syntax Description
Defaults IGMP snooping is enabled.
Command Modes Global configuration mode
Interface configuration mode
Command History
Usage Guidelines The tcn flood option applies only to Layer 2 switch ports and EtherChannels; it does not apply to routed
ports, VLAN interfaces, or Layer 3 channels.
The ip igmp snooping command is disabled by default on multicast routers.
Note You can use the tcn flood option in interface configuration mode.
Examples This example shows how to enable IGMP snooping:
Switch(config)# ip igmp snooping
Switch(config)#
This example shows how to disable IGMP snooping:
Switch(config)# no ip igmp snooping
Switch(config)#
tcn (Optional) Specifies the topology change configurations.
flood (Optional) Specifies to flood the spanning tree table to the network when a topology
change occurs.
query (Optional) Specifies the TCN query configurations.
count count (Optional) Specifies how often the spanning tree table is flooded; valid values are
from 1 to 10.
solicit (Optional) Specifies an IGMP general query.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.1(11)EW Support for flooding the spanning tree table was added.

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