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7.2.2 IGMP Snooping Configuration Command
7.2.2.1 ip igmp snooping
Command: ip igmp snooping
no ip igmp snooping
Function: Enable the IGMP Snooping function in the switch: the “no ip igmp snooping”
command disables the IGMP Snooping function.
Command mode: Global Mode
Default: IGMP Snooping is disabled by default.
Usage Guide: Enabling IGMP Snooping to allow the switch to monitor multicast traffic in
the network and decide which ports can receive multicast traffic.
Example: Enable IGMP Snooping in Global Mode.
Switch(Config)#ip igmp snooping
7.2.2.2 ip igmp snooping vlan
Command: ip igmp snooping vlan <vlan-id>
no ip igmp snooping vlan <vlan-id>
Function: Enable the IGMP Snooping function for the specified VLAN: the “no ip igmp
snooping vlan <vlan-id>” command disables the IGMP Snooping function for
the specified VLAN.
Parameter: <vlan-id> is the VLAN number.
Command mode: Global Mode
Default: IGMP Snooping is disabled by default.
Usage Guide: IGMP Snooping for the switch must be enabled first to enable IGMP
Snooping for the specified VLAN. This command cannot be used with ip
igmp snooping vlan <vlan-id> query command, i.e. either snooping or
query can be enabled for one VLAN, but not both.
Example: Enable IGMP Snooping for VLAN 100 in Global Mode.
Switch(Config)#ip igmp snooping vlan 100
7.2.2.3 ip igmp snooping vlan mrouter
Command: ip igmp snooping vlan <vlan-id> mrouter interface <interface –name>
no ip igmp snooping vlan <vlan-id> mrouter