Cisco Systems 3750E Using MVR in a Multicast Television Application

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Catalyst 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02

Chapter24 Configuring IGMP Snooping and MVR

Understanding Multicast VLAN Registration

Using MVR in a Multicast Television Application

In a multicast television application, a PC or a television with a set-top box can receive the multicast

stream. Multiple set-top boxes or PCs can be connected to one subscriber port, which is a switch port

configured as an MVR receiver port. Figure 24-3 is an example configuration. DHCP assigns an IP

address to the set-top box or the PC. When a subscriber selects a channel, the set-top box or PC sends

an IGMP report to Switch A to join the appropriate multicast. If the IGMP report matches one of the

configured IP multicast group addresses, the switch CPU modifies the hardwa re address table to include

this receiver port and VLAN as a forwarding destination of the specified multicast stream when it is

received from the multicast VLAN. Uplink ports that send and receive multicast data to and from the

multicast VLAN are called MVR source ports.

Figure24-3 Multicast VLAN Registration Example

SP1

Multicast

data

Multicast

data

Customer

premises

Multicast VLAN

RP = Receiver Port

SP = Source Port

Note: All source ports belong to

the multicast VLAN.

Hub

data

Set-top boxSet-top box

TV TV

IGMP join

Cisco router

Multicast

server

Switch B

SP2

RP1 RP2 RP3 RP4 RP5 RP6 RP7

101364

Switch A