Administrator Guide

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
Supported Modes All Modes
Command
History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
8.3.17.0 Supported on the M I/O Aggregator.
ip igmp group-join-limit
To limit the number of IGMP groups that can be joined in a second, use this feature.
Syntax
ip igmp group-join-limit number
Parameters
number Enter the number of IGMP groups permitted to join in a second. The range is from 1
to 10000.
Defaults none
Command Modes CONFIGURATION (conf-if-interface-slot/port)
Supported Modes Programmable-Mux (PMUX)
Command
History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
ip igmp querier-timeout
Change the interval that must pass before a multicast router decides that there is no longer another multicast router that should
be the querier.
Syntax
ip igmp querier-timeout seconds
To return to the default value, use the no ip igmp querier-timeout command.
Parameters
seconds Enter the number of seconds the router must wait to become the new querier. The
range is from 60 to 300. The default is 125 seconds.
Defaults 125 seconds
Command Modes INTERFACE
154 Internet Group Management Protocol (IGMP)