Multicast VLAN Registration

In this section:

  1. Multicast VLAN Registration Overview
    Multicast VLAN Registration (MVR) is a Layer 2 feature that enables efficient distribution of Internet Protocol Television (IPTV) multicast streams across a network. MVR addresses the inefficiencies of Internet Group Management Protocol (IGMP), which in traditional VLAN-based multicast delivery confines multicast streams to individual VLANs, leading to bandwidth waste due to duplication when multiple VLANs request the same stream.
  2. IGMP Message Handling
  3. Using MVR in a Multicast Television Application
    In a multicast television application, a PC or television with a set-top box can receive multicast streams. Multiple PCs or set-top boxes can be connected to one subscriber port, which is a switch port configured as an MVR receiver port (RP). When a subscriber selects a channel, the set-top box or PC sends an IGMP report to the access layer switch (Switch A in this example) to join the appropriate multicast group. The switch modifies the forwarding table to include this receiver port as a forwarding destination in the MVLAN. An uplink port that sends and receives multicast data within the MVLAN is called an MVR source port (SP).
  4. Configuring Multicast VLAN Registration
  5. Displaying MVR Information
    You can use various show commands to view information about Multicast VLAN Registration (MVR) snooping. Using these commands is optional and they can be entered in any order.