C
HAPTER
39
| Multicast Filtering Commands
IGMP (Layer 3)
– 938 –
COMMAND USAGE
â—† IGMP (including query functions) can be enabled for specific VLAN
interfaces at Layer 3 through the ip igmp command.
â—† When a multicast routing protocol, such as PIM - Dense Mode, is
enabled, IGMP is also enabled.
EXAMPLE
Console(config)#interface vlan 1
Console(config-if)#ip igmp
Console(config-if)#end
Console#show ip igmp interface
IGMP : Enabled
IGMP Version : 2
IGMP Proxy : Disabled
IGMP Unsolicited-report-interval : 400 sec
Robustness variable : 2
Query Interval : 125 sec
Query Max Response Time : 100 (resolution in 0.1 sec)
Last Member Query Interval : 10 (resolution in 0.1 sec)
Querier : 0.0.0.0
Joined Groups :
Static Groups :
Console#
RELATED COMMANDS
ip igmp snooping (905)
show ip igmp snooping (919)
ip igmp last-
member-query-
interval
This command configures the frequency at which to send IGMP group-
specific or IGMPv3 group-source-specific query messages in response to
receiving a group-specific or group-source-specific leave message. Use the
no form to restore the default setting.
SYNTAX
ip igmp last-member-query-interval seconds
no ip igmp last-member-query-interval
seconds - The frequency at which the switch sends group-specific or
group-source-specific queries upon receipt of a leave message.
(Range: 1-255 tenths of a second)
DEFAULT SETTING
10 (1 second)
COMMAND MODE
Interface Configuration (VLAN)
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