Configuration Guide 270
Configuring Layer 2 Multicast IGMP Snooping Configurations
Configuring IGMP Snooping Last Listener Query
Configure the Last Listener Query Interval and Last Listener Query Count when the switch
receives an IGMP leave message. If specified count of Multicast-Address-Specific Queries
(MASQs) are sent and no report message is received, the switch will delete the multicast
address from the multicast forwarding table.
Follow these steps to configure Last Listener Query Interval and Last Listener Query
Count in the Global Config section:
1) Specify the interval between MASQs.
Last Listener
Query Interval
When the switch receives an IGMP leave message, the switch obtains the address
of the multicast group that the host wants to leave from the message. Then the
switch sends out MASQs to this multicast group through the port receiving the
leave message. This parameter determines the interval between MASQs. The
valid values are from 1 to 5 seconds.
2) Specify the number of MASQs to be sent.
Last Listener
Query Count
When the switch receives an IGMP leave message, the switch obtains the address
of the multicast group that the host wants to leave from the message. Then the
switch sends out MASQs to this multicast group through the port receiving the
leave message. This parameter determines the number of MASQs to be sent. The
valid values are from 1 to 5.
3) Click Apply.
Verifying IGMP Snooping Status
IGMP Snooping Status Table displays VLANs and ports with IGMP Snooping enabled.
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