Cisco Systems 3750E manual Using MVR in a Multicast Television Application, 24-19

Chapter 24 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 24-3is 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 hardware 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.

Figure 24-3	Multicast VLAN Registration Example
Multicast VLAN	Cisco router
				Multicast
		SP			server
	Switch B
			SP
	SP
SP					SP
SP	SP1			SP2

Multicast

data

Switch A

Multicast

data

RP1 RP2 RP3 RP4 RP5 RP6 RP7

Customer	Hub
premises
IGMP join
Set-top box	Set-top box
TV
data

TV

RP = Receiver Port SP = Source Port

	PC
TV	101364

Note: All source ports belong to the multicast VLAN.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02		24-19