Chapter 21 Multicast
GS-3012/GS-3012F User’s Guide
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21.5 MVR Overview
Multicast VLAN Registration (MVR) is designed for applications (such as Media-on-Demand
(MoD)) that use multicast traffic across an Ethernet ring-based service provider network.
MVR allows one single multicast VLAN to be shared among different subscriber VLANs on
the network. While isolated in different subscriber VLANs, connected devices can subscribe
to and unsubscribe from the multicast stream in the multicast VLAN. This improves
bandwidth utilization with reduced multicast traffic in the subscriber VLANs and simplifies
multicast group management.
You must enable IGMP snooping to use MVR. However, MVR only responds to IGMP join
and leave control messages from multicast groups that are configured under MVR. Join and
leave reports from other multicast groups are managed by IGMP snooping.
The following figure shows a network example. The subscriber VLAN (1, 2 and 3)
information is hidden from the streaming media server, S. In addition, the multicast VLAN
information is only visible to the switch and S.
Figure 75 MVR Network Example
21.5.1 Types of MVR Ports
In MVR, a source port is a port on the switch that can send and receive multicast traffic in a
multicast VLAN while a receiver port can only receive multicast data. Once configured, the
switch maintains a forwarding table that matches the multicast stream to the associated
multicast group.
21.5.2 MVR Modes
You can set your switch to operate in either dynamic or compatible mode.
Delete To delete the profile(s) and all the accompanying rules, select the profile(s) that you
want to remove in the Delete Profile column, then click the Delete button.
To delete a rule(s) from a profile, select the rule(s) that you want to remove in the
Delete Rule column, then click the Delete button.
Cancel Click Cancel to clear the Delete Profile/Delete Rule check boxes.
Table 53 Multicast: IGMP Filtering Profile (continued)
LABEL DESCRIPTION
