Command Line Reference Guide

Parameters
group-address (OPTIONAL) Enter the IP multicast group address in dotted
decimal format.
interface (OPTIONAL) Enter the interface type and slot/port
information:For a VLAN interface enter the keyword vlan
followed by a number from 1 to 4094.
Command
Modes
EXEC Privilege
Command
History
Version 8.3.17.0 Supported on the M I/O Aggregator.
debug ip igmp
Enable debugging of IGMP packets.
Syntax
debug ip igmp [group address | interface]
To disable IGMP debugging, enter the no ip igmp command. To disable all
debugging, enter the
undebug all command.
Defaults Disabled
Parameters
group-address (OPTIONAL) Enter the IP multicast group address in dotted
decimal format.
interface (OPTIONAL) Enter the interface type and slot/port
information:
For a VLAN interface enter the keyword vlan followed by a
number from 1 to 4094.
Command
Modes
EXEC Privilege
Command
History
Version 8.3.17.0 Supported on the M I/O Aggregator.
ip igmp snooping flood
This command controls the flooding behavior of unregistered multicast data packets.When flooding is
disabled, unregistered multicast data traffic is forwarded to
only multicast router ports in a VLAN. If there
is no multicast router port in a VLAN, unregistered multicast data traffic is dropped.
Syntax
ip igmp snooping flood
Parameters Enabled
Command
Modes
CONFIGURATION
140
Internet Group Management Protocol (IGMP)