CLI Guide

Supported Modes Programmable-Mux (PMUX)
Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
Usage Information To enable IGMP snooping, enter this command. When you enable this command from CONFIGURATION mode,
IGMP snooping enables on all VLAN interfaces (except the default VLAN).
NOTE: Execute the no shutdown command on the VLAN interface for IGMP Snooping to function.
ip igmp snooping fast-leave
Enable IGMP snooping fast-leave for this VLAN.
Syntax
ip igmp snooping fast-leave
To disable IGMP snooping fast leave, use the no igmp snooping fast-leave command.
Defaults Not congured.
Command Modes INTERFACE VLAN — (conf-if-vl-n)
Supported Modes Programmable-Mux (PMUX)
Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
Usage Information Queriers normally send some queries when a leave message is received prior to deleting a group from the
membership database. There may be situations when you require a fast deletion of a group. When you enable
IGMP fast leave processing, the switch removes an interface from the multicast group as soon as it detects an
IGMP version 2 leave message on the interface.
ip igmp snooping ood
This command controls the ooding behavior of unregistered multicast data packets. When ooding is disabled, unregistered multicast data
trac is forwarded to only multicast router ports in a VLAN. If there is no multicast router port in a VLAN, unregistered multicast data
trac is dropped.
Syntax
ip igmp snooping flood
To disable the ooding, use the no ip igmp snooping flood command.
Internet Group Management Protocol (IGMP) 517