Chapter 22
| Multicast Filtering Commands
IGMP (Layer 3)
– 629 –
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 (583)
show ip igmp snooping (600)
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)
Command Usage
When the switch receives an IGMPv2 or IGMPv3 leave message from a host that
wants to leave a multicast group, source or channel, it sends a number of group-
specific or group-source-specific query messages at intervals defined by this
command. If no response is received after this period, the switch stops forwarding
for the group, source or channel.
Example
Console(config)#interface vlan 1
Console(config-if)#ip igmp last-member-query-interval 20
Console(config-if)#
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