1-13To do... Use the command... RemarksConfigure the maximumresponse time to IGMP generalqueriesigmp-snooping max-response-timeintervalOptional10 seconds by defaultConfigure the IGMPlast-member query intervaligmp-snoopinglast-member-query-interval intervalOptional1 second by defaultIn the configuration, make sure that the IGMP general query interval is larger than the maximumresponse time for IGMP general queries. Otherwise, multicast group members may be deleted bymistake.Configuring Source IP Address of IGMP QueriesUpon receiving an IGMP query whose source IP address is 0.0.0.0 on a port, the switch does not enlistthat port as a dynamic router port. This may prevent multicast forwarding entries from being correctlycreated at the data link layer and cause multicast traffic forwarding failure in the end. When a Layer 2device acts as an IGMP-Snooping querier, to avoid the aforesaid problem, you are commended toconfigure a non-all-zero IP address as the source IP address of IGMP queries.Follow these steps to configure source IP address of IGMP queries:To do... Use the command... RemarksEnter system view system-view —Enter VLAN view vlan vlan-id —Configure the source addressof IGMP general queriesigmp-snooping general-query source-ip{ current-interface | ip-address }Optional0.0.0.0 by defaultConfigure the source IPaddress of IGMP group-specificqueriesigmp-snooping special-query source-ip{ current-interface | ip-address }Optional0.0.0.0 by defaultThe source address of IGMP query messages may affect IGMP querier selection within the segment.Configuring an IGMP Snooping PolicyConfiguration PrerequisitesBefore configuring an IGMP Snooping policy, complete the following task:z Enable IGMP Snooping in the VLAN
