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Multicast Filtering
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CLI – This example modifies the settings for multicast filtering, and then displays the
current status.
Enabling IGMP Immediate Leave
The IGMP snooping immediate-leave feature enables a Layer 2 LAN interface to be
removed from the multicast forwarding table without first sending an IGMP
group-specific query to the interface. Upon receiving a group-specific IGMPv2 leave
message, the switch immediately removes the interface from the Layer 2 forwarding
table entry for that multicast group, unless a multicast router was learned on the
port.
IGMP immediate leave improves bandwidth management for all hosts in a switched
network.
Command Attributes
• VLAN ID – ID of configured VLAN (1-4093).
• Immediate Leave – Enable or disable IGMP immediate leave for the selected
VLAN.
Web – Click IGMP Snooping, IGMP Immediate Leave.
Figure 3-99 IGMP Immediate Leave
Console(config)#ip igmp snooping 4-212
Console(config)#ip igmp snooping querier 4-216
Console(config)#ip igmp snooping query-count 10 4-216
Console(config)#ip igmp snooping query-interval 100 4-217
Console(config)#ip igmp snooping query-max-response-time 20 4-218
Console(config)#ip igmp snooping router-port-expire-time 300 4-218
Console(config)#ip igmp snooping version 2 4-213
Console(config)#exit
Console#show ip igmp snooping 4-214
Service status : Enabled
Querier status : Enabled
Query count : 10
Query interval : 100 sec
Query max response time : 20 sec
Router port expire time : 300 sec
IGMP snooping version : Version 2
Console#