SMC Networks TigerAccess SMC7816M - Manual (Page 416)

M
ULTICAST
F
ILTERING
16-20
Multicast VLAN Registration
Multicast VLAN Registration (MVR) is a protocol that controls access to a
single network-wide VLAN most commonly used for transmitting
multicast traffic (such as television channels or video-on-demand) across a
service provider’s network. Any multicast traffic entering an MVR VLAN
is sent to all attached subscribers. This protocol can significantly reduce to
processing overhead required to dynamically monitor and establish the
distribution tree for a normal multicast VLAN. This makes it possible to
support common multicast services over a wide part of the network
without having to use any multicast routing protocol.
MVR maintains the user isolation and data security provided by VLAN
segregation by passing only multicast traffic into other VLANs to which
the subscribers belong. Even though common multicast streams are passed
onto different VLAN groups from the MVR VLAN, users in different
IEEE 802.1Q or private VLANs cannot exchange any information (except
through upper-level routing services).