Configuring L2 Multicast Features 749Configuring IGMP Snooping QuerierBeginning in Privileged EXEC mode, use the following commands toconfigure IGMP snooping querier settings on the switch and on VLANs.ip igmp snooping vlanvlan-id mcrtexpiretimesecondsSpecify the multicast router time-out value for toassociate with a VLAN. This command sets the number ofseconds to wait to age out an automatically-learnedmulticast router port.CTRL + Z Exit to Privileged EXEC mode.show ip igmp snoopinggroupsShows IGMP snooping configuration on all VLANs.show ip igmp snoopingvlanvlan-idView the IGMP snooping settings on the VLAN.Command Purposeconfigure Enter global configuration mode.ip igmp snooping querier[vlanvlan-id] [addressip-address]Enable the IGMP snooping querier on the switch or onthe VLAN specified with thevlan-id parameter.Use the optionalip-address parameter to specify the IPaddress that the snooping querier switch should use as thesource address when generating periodic queries.ip igmp snooping querierquery-intervalinterval-countSet the IGMP snooping querier query interval time, whichis the amount of time in seconds that the switch waitsbefore sending another periodic query. The range is1–1800 seconds.ip igmp snooping queriertimer expirysecondsSet the IGMP snooping querier timer expiration period.This is the time period, in seconds, that the switchremains in non-querier mode after it has discovered thatthere is a multicast querier in the network.ip igmp snooping querierversionversionSet the IGMP version of the query that the switch sendsperiodically. Theversion range is 1–2.ip igmp snooping queriervlan-idEnable the IGMP snooping querier on the specifiedVLAN.Command Purpose
