Using Mvr In A Multicast Television Application - Cisco 3750G - Catalyst Integrated Wireless LAN Controller Configuration Manual

Chapter 24 Configuring IGMP Snooping and MVR

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.
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
OL-8550-02
Multicast VLAN Registration Example
Switch B
SP
SP
SP1
Multicast
data
RP1 RP2 RP3 RP4 RP5 RP6 RP7
Customer
premises
IGMP join
Set-top box
TV
data
TV
RP = Receiver Port
SP = Source Port
Figure 24-3 is an example configuration. DHCP assigns an IP
Cisco router
Multicast
server
SP
SP
SP
SP2
Switch A
Hub
Set-top box
PC
TV
Note: All source ports belong to
the multicast VLAN.
Catalyst 3750 Switch Software Configuration Guide
Understanding Multicast VLAN Registration
SP
Multicast
data
24-19