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Catalyst 3560 Switch Command Reference
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Chapter 2 Catalyst 3560 Switch Cisco IOS Commands
ip igmp snooping vlan immediate-leave
ip igmp snooping vlan immediate-leave
Use the ip igmp snooping immediate-leave global configuration command to enable Internet Group
Management Protocol (IGMP) snooping immediate-leave processing on a per-VLAN basis. Use the no
form of this command to return to the default setting.
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 VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP
snooping.
You should configure the Immediate- Leave feature only when there is a maximum of one receiver on
every port in the VLAN. The configuration is saved in 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
You can verify your settings by entering the show ip igmp snooping privileged EXEC command.
Related Commands
vlan-id Enable IGMP snooping and the Immediate-Leave feature on the specified
VLAN. The range is 1 to 1001 and 1006 to 4094.
Release Modification
12.1(19)EA1 This command was introduced.
Command Description
ip igmp snooping report-suppression Enables IGMP report suppression.
show ip igmp snooping Displays the snooping configuration.
show ip igmp snooping groups Displays IGMP snooping multicast information.
show ip igmp snooping mrouter Displays the IGMP snooping router ports.
show ip igmp snooping querier Displays the configuration and operation information for
the IGMP querier configured on a switch.
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