UMN:CLI User ManualV810249410.2.3.2 IGMP Snooping Last Member Query IntervalUpon receiving a leave message, a switch with IGMP snooping then sends out a group-specific (IGMPv2) or group-source-specific query (IGMPv3) message to determine ifthere is still any host interested in receiving the traffic. If there is no reply, the switch stopsforwarding the multicast traffic. However, IGMP messages may get lost for various rea-sons, so you can specify an interval to send query messages.To specify an interval to send group-specific or group-source-specific query messages,use the following command.Command Mode Descriptionip igmp snooping last-member-query-interval <100-10000>GlobalSpecifies a last member query interval.100-10000: last member query interval(default: 1000 milliseconds)ip igmp snooping vlan VLANSlast-member-query-interval<100-10000>Specifies a last member query interval.VLANS: VLAN ID (1-4094)To delete a specified an interval to send group-specific or group-source-specific querymessages, use the following command.Command Mode Descriptionno ip igmp snooping last-member-query-intervalGlobal Deletes a specified last member query interval.no ip igmp snooping vlanVLANS last-member-query-interval10.2.3.3 IGMP Snooping Immediate LeaveNormally, an IGMP snooping querier sends a group-specific or group-source-specific que-ry message upon receipt of a leave message from a host. If you want to set a leave la-tency as 0 (zero), you can omit the querying procedure. When the querying procedure isomitted, the switch immediately removes the entry from the forwarding table for thatVLAN, and informs the multicast router.To enable the IGMP snooping immediate leave, use the following command.Command Mode Descriptionip igmp snooping immediate-leaveGlobalEnables the IGMP snooping immediate leave globally.ip igmp snooping port PORTSimmediate-leaveEnables the IGMP snooping immediate leave on a port.PORTS: port number (1/1, 1/2, 2/1, …)ip igmp snooping vlan VLANSimmediate-leaveEnables the IGMP snooping immediate leave on aVLAN.VLANS: VLAN ID (1-4094)To disable the IGMP snooping immediate leave, use the following command.
