Specifications

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Catalyst 2950 and Catalyst 2955 Switch Command Reference

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Chapter 2 Cisco IOS Commands

ip igmp snooping vlan immediate-leave

Use the ip igmp snooping vlan immediate-leave global configuration command to enable Internet

Group Management Protocol (IGMP) Immediate-Leave processing on a VLAN interface. Use the no

form of this command to disable Immediate-Leave processing on the VLAN interface.

ip igmp snooping vlan vlan-id immediate-leave

no ip igmp snooping vlan vlan-id immediate-leave

Syntax Description

Defaults IGMP Immediate-Leave processing is disabled.

Command Modes Global configuration

Command History

Usage Guidelines Use the Immediate-Leave feature only when there is only one IP multicast receiver present on every port

in the VLAN. The Immediate-Leave configuration is saved in nonvolatile RAM (NVRAM).

The Immediate-Leave feature is supported only with IGMP version 2 hosts.

Examples This example shows how to enable IGMP Immediate-Leave processing on VLAN 1:

Switch(config)# ip igmp snooping vlan 1 immediate-leave

This example shows how to disable IGMP Immediate-Leave processing on VLAN 1:

Switch(config)# no ip igmp snooping vlan 1 immediate-leave

You can verify your settings by entering the show ip igmp snooping vlan privileged EXEC command.

Related Commands

vlan-id VLAN ID value. The range is between 1 to 4094 when the enhanced

software image (EI) is installed and 1 to 1001 when the standard software

image (SI) is installed. Do not enter leading zeros.

Release Modification

12.0(5.2)WC(1) This command was first introduced.

Command Description

ip igmp snooping Enables IGMP snooping.

ip igmp snooping vlan mrouter Configures a Layer 2 port as a multicast router port.

show ip igmp snooping Displays the IGMP snooping configuration.

ip igmp snooping vlan static Configures a Layer 2 port as a member of a group.

show mac address-table multicast Displays the Layer 2 multicast entries for a VLAN.