Netgear M4100-26G CLI Manual - Page 214

ProSafe M4100 and M7100 Managed Switches About MVR Internet Group Management Protocol (IGMP) Layer 3 is widely used for IPv4 network multicasting. In Layer 2 networks, IGMP uses resources inefficiently. For example, a Layer 2 switch multicasts traffic to all ports, even if there are receivers connected to only a few ports. To address this problem, the IGMP Snooping protocol was developed. The problem still appears, though, when receivers are in different VLANs. MVR is intended to solve the problem of receivers in different VLANs. It uses a dedicated manually configured VLAN, called the multicast VLAN, to forward multicast traffic over a Layer 2 network with IGMP snooping. MVR Commands mvr This command enables MVR. Format Mode Default mvr Global Config Interface Config Disabled no mvr This command disables MVR. Format Mode no mvr Global Config Interface Config mvr group This command adds an MVR membership group. is the IP multicast group being added. The count is the number of incremental multicast groups being added (the first multicast group is A.B.C.D). If a count is not specified, only one multicast group is added. Format Mode mvr group [count] Global Config Multicast VLAN Registration (MVR) 214