Configuring L2 Multicast Features 743Configuring MLD Snooping on VLANsBeginning in Privileged EXEC mode, use the following commands toconfigure MLD snooping settings on VLANs.ip igmp snooping querierelection participatevlan-idAllow the IGMP snooping querier to participate in thequerier election process when it discovers the presence ofanother querier in the VLAN. When this mode is enabled,if the snooping querier finds that the other querier sourceaddress is more than the snooping querier address, it stopssending periodic queries. If the snooping querier wins theelection, then it continues sending periodic queries andthe other querier ceases sending queries. Use of electionmode is not recommended when multicast routers arepresent in the network.CTRL + Z Exit to Privileged EXEC mode.show ip igmp snoopingquerier [detail |vlanvlan-id]View IGMP snooping querier settings configured on theswitch, on all VLANs, or on the specified VLAN.Command Purposeconfigure Enter global configuration mode.ipv6 mld snooping vlanvlan-idEnable MLD snooping on the specified VLAN.ipv6 mld snooping vlanvlan-idgroupmembership-intervalsecondsSpecify the host time-out value for the specified VLAN. Ifan MLD report for a multicast group is not received in thenumber of seconds specified by theseconds value, thisVLAN is deleted from the member list of that multicastgroup.ipv6 mld snoopingvlan-id last-listener-query-intervalsecondsSpecify the leave time-out value for the VLAN. If an MLDreport for a multicast group is not received within thenumber of seconds configured with this command afteran MLD leave was received from a specific interface, thecurrent port is deleted from the VLAN member list of thatmulticast group.Command Purpose
