Dell PowerEdge M520 Dell PowerConnect M6220/M6348/M8024/M8024-k CLI Referen - Page 446
Syntax, Default Configuration, Command Mode, User Guidelines, Example, ip igmp snooping fast-leave
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Syntax ip igmp snooping vlan-id no ip igmp snooping Default Configuration IGMP snooping is disabled on VLAN interfaces by default. Command Mode VLAN Configuration mode User Guidelines This command has no user guidelines. Example The following example enables IGMP snooping on VLAN 2. console#vlan database 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 MACbased 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 ip igmp snooping fast-leave vlan-id 446 IGMP Snooping Commands
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