Configuring the Switch
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Web – Click IGMP Snooping, IGMP Configuration. Adjust the IGMP settings as
required, and then click Apply. (The default settings are shown below.)
Figure 3-97 IGMP Configuration
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.
Console(config)#ip igmp snooping 4-202
Console(config)#ip igmp snooping querier 4-206
Console(config)#ip igmp snooping query-count 10 4-206
Console(config)#ip igmp snooping query-interval 100 4-207
Console(config)#ip igmp snooping query-max-response-time 20 4-208
Console(config)#ip igmp snooping router-port-expire-time 300 4-208
Console(config)#ip igmp snooping version 2 4-203
Console(config)#exit
Console#show ip igmp snooping 4-203
Service status: Enabled
Querier status: Enabled
Leave proxy status: Disabled
Query count: 10
Query interval: 100 sec
Query max response time: 20 sec
Router port expire time: 300 sec
Immediate Leave Processing: Disabled on all VLAN
IGMP snooping version: Version 2
Console#
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