Netgear GSM7328SO Command Line Interface (CLI) User Manual - Page 232
Multicast VLAN Registration (MVR), About MVR, MVR Commands
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4. Multicast VLAN Registration (MVR) 4 This chapter contains the following sections: • About MVR • MVR Commands 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 in conjunction with IGMP snooping. MVR Commands mvr This command enables MVR. Format Mode Default mvr Global Config Interface Config Disabled 232