Operation Manual – MulticastH3C S7500E Series Ethernet Switches Chapter 3 Multicast VLAN Configuration3-2To do… Use the command… RemarksEnter system view system-view —Configure a specific VLANas a multicast VLANmulticast-vlan vlan-idenableRequiredDisabled by defaultConfigure sub-VLANs fora specific multicast VLANmulticast-vlan vlan-idsubvlan vlan-listRequiredNo sub-VLAN by default.Note:z The VLAN to be configured as the multicast VLAN and the VLANs to be configuredas sub-VLANs of the multicast VLAN must exist.z The VLANs to be configured as sub-VLANs of the multicast VLAN must not bemulticast VLANsz The VLANs to be configured as the sub-VLANs of the multicast VLAN must not besub-VLANs of another multicast VLANz The number of sub-VLANs of the multicast VLAN must not exceed thesystem-defined limit (an S7500E series Ethernet switch supports up to five multicastVLANs, and supports up to 4000 sub-VLANs for each multicast VLAN. The totalnumber of sub-VLANs for all multicast VLANs on the switch cannot exceed 4000).Caution:z You cannot configure any multicast VLAN or a sub-VLAN of a multicast VLAN on adevice with IP multicast routing or routing enabled.z After a VLAN is configured into a multicast VLAN, IGMP Snooping must be enabledin the VLAN before the multicast VLAN feature can be implemented, while it is notnecessary to enable IGMP Snooping in the sub-VLANs of the multicast VLAN.3.3 Displaying and Maintaining Multicast VLANTo do… Use the command… RemarksDisplay information abouta multicast VLAN and itssub-VLANsdisplay multicast-vlan[ vlan-id ] Available in any view
