1-6Configuring multicast VLAN ports in port view or port group viewFollow these steps to configure multicast VLAN ports in port view or port group view:To do… Use this command… RemarksEnter system view system-view —Configure the specified VLANas a multicast VLAN and entermulticast VLAN viewmulticast-vlan vlan-idRequiredNot a multicast VLAN bydefault.Return to system view quit —interface interface-typeinterface-numberEnter port view or port groupview port-group manualport-group-nameRequiredUse either command.Configure the current port(s) asport(s) of the multicast VLAN port multicast-vlan vlan-idRequiredBy default, a user port does notbelong to any multicast VLAN.z The VLAN to be configured as a multicast VLAN must exist.z A port can belong to only one multicast VLAN.Displaying and Maintaining Multicast VLANTo do… Use the command… RemarksDisplay information about amulticast VLANdisplay multicast-vlan[ vlan-id ] Available in any viewMulticast VLAN Configuration ExamplesSub-VLAN-Based Multicast VLAN ConfigurationNetwork requirementsz Router A connects to a multicast source through GigabitEthernet1/0/1 and to Switch A, throughGigabitEthernet 1/0/2.z IGMPv2 is required on Router A, and IGMPv2 Snooping is required on Switch A. Router A is theIGMP querier.z Switch A’s GigabitEthernet 1/0/1 belongs to VLAN 10, GigabitEthernet 1/0/2 throughGigabitEthernet1/0/4 belong to VLAN 2 through VLAN 4 respectively, and Host A through Host Care attached to GigabitEthernet 1/0/2 through GigabitEthernet 1/0/4 of Switch A respectively.z The multicast source sends multicast data to multicast group 224.1.1.1. Host A, Host B, and Host Care receivers of the multicast group.