Dell PowerConnect M6348 Cli Reference Manual page 280

User Guidelines
This command has no user guidelines.
Example
The following example enables IGMP snooping on VLAN 2.
console(config-vlan)#ip igmp snooping 2
ip igmp snooping fast-leave
This command enables or disables IGMP Snooping fast-leave mode on a selected VLAN. Enabling fast-
leave allows the switch to immediately remove the layer 2 LAN interface from its forwarding table entry
upon receiving an IGMP leave message for that multicast group without first sending out MAC-based
general queries to the interface. The no form of this command disables IGMP Snooping fast-leave mode
on a VLAN.
You should enable fast-leave admin mode only on VLANs where only one host is connected to each layer
2 LAN port. This setting prevents the inadvertent dropping of the other hosts that were connected to the
same layer 2 LAN port but were still interested in receiving multicast traffic directed to that group. Also,
fast-leave processing is supported only with IGMP version 2 hosts.
Syntax
vlan-id
ip igmp snooping fast-leave
no ip igmp snooping fast-leave
vlan id — Number assigned to the VLAN.
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Default Configuration
IGMP snooping fast-leave mode is disabled on VLANs by default.
Command Mode
VLAN Configuration mode
User Guidelines
This command has no user guidelines.
Example
The following example enables IGMP snooping fast-leave mode on VLAN 2.
console(config-vlan)#ip igmp snooping fast-leave 2
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