Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 672

Multicast VLAN Registration Commands Dell EMC Networking N1100-ON/N1500/N2000/N2100-ON/N2200ON/N3000-ON/N3100-ON/N3200-ON Series Switches Series Switches Multicast VLAN registration (MVR) is a method for consolidating multicast traffic from multiple VLANs onto a single VLAN. A typical usage scenario would be the distribution of a multicast group to a switch using a single VLAN where the switch has users in different VLANs subscribing to the multicast group. MVR enables the distribution of the multicast group from the single consolidated VLAN onto the multiple user VLANs. MVR, like the IGMP Snooping protocol, allows a Layer 2 switch to snoop on the IGMP control protocol. Both protocols operate independently from each other. Both protocols may be enabled on the switch interfaces at the same time. In such a case, MVR is listening to the join and report messages only for groups configured statically. All other groups are managed by IGMP snooping. There are two types of MVR ports: source and receiver. • Source port is the port to which the multicast traffic is flowing using the multicast VLAN. • Receiver port is the port where a listening host is connected to the switch. It can utilize any (or no) VLAN, except the multicast VLAN. This implies that the MVR switch will perform VLAN tag substitution from the multicast VLAN Source port to the VLAN tag used by the receiver port. The multicast VLAN is the VLAN that is configured in the specific network for MVR purposes. It must be manually specified by the operator for all multicast source ports in the network. It is this VLAN that is used to transfer multicast traffic over the network to avoid duplication of multicast streams for clients in different VLANs. NOTE: MVR can only be enabled on physical interfaces, not on LAGs or VLANs. Layer 2 Switching Commands 672