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To do… Use this command… Remarks
port-group manual port-group-
name
Configure the current port as a
member port of the multicast
VLAN
port multicast-vlan vlan-id
Required
By default, a user port does not
belong to any multicast VLAN.
NOTE:
You cannot configure multicast VLAN on a device with multicast routing enabled.
The VLAN to be configured as a multicast VLAN must exist.
A port can belong to only one multicast VLAN.
Displaying and maintaining multicast VLAN
To do… Use the command… Remarks
Display information about a
multicast VLAN
display multicast-vlan [ vlan-id ] [
| { begin | exclude | include }
regular-expression ]
Available in any view
Multicast VLAN configuration examples
Sub-VLAN-based multicast VLAN configuration
Network requirements
• Router A connects to a multicast source through GigabitEthernet 1/0/1 and to Switch A, through
GigabitEthernet 1/0/2.
• IGMPv2 runs on Router A, and IGMPv2 snooping runs on Switch A. Router A is the IGMP querier.
• Switch A’s GigabitEthernet 1/0/1 belongs to VLAN 10, GigabitEthernet 1/0/2 through
GigabitEthernet 1/0/4 belong to VLAN 2 through VLAN 4 respectively, and Host A through Host
C are attached to GigabitEthernet 1/0/2 through GigabitEthernet 1/0/4 of Switch A respectively.
• The multicast source sends multicast data to multicast group 224.1.1.1. Host A, Host B, and Host C
are receivers of the multicast group.
• Configure the sub-VLAN-based multicast VLAN feature so that Router A just sends multicast data to
Switch A through the multicast VLAN and Switch A forwards the traffic to the receivers that belong
to different user VLANs.
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