Configuring Mvr - Dell PowerConnect 8024 User Configuration Manual

After performing the configuration in this example, Host A sends a join
message for multicast group 225.1.1.1. Host B sends a join message for group
225.1.1.2. Because IGMP snooping is enabled on the switch and on VLAN
100, the switch listens to the messages and dynamically adds Ports 1 and 2 to
the multicast address table. Port 3 did not send a join message, so it does not
appear in the table, as the following show command indicates.
console#show bridge multicast address-table
Vlan
----
100
100
Forbidden ports for multicast addresses:
Vlan
---- -----------------------
100
100
When the video server sends multicast data to group 225.1.1.1, Port 1
participates and receives multicast traffic, but Port 2 does not participate
because it is a member of a different multicast group. Without IGMP
snooping, all ports that are members of VLAN 100 would be flooded with
traffic for all multicast groups, which would greatly increase the amount of
traffic on the switch.

Configuring MVR

In this example, ports 1, 2, 8, and 9 are connected to hosts that occasionally
request multicast data by sending IGMP join requests. These ports are
configured as MVR receiver ports so that they can be treated as members of
VLAN 99, the multicast VLAN, to receive multicast traffic.
Ports 1 and 2 are members of VLAN 10, and ports 8 and 9 are members of
VLAN 20. Port 24 connects the switch to the rest of the LAN, including the
multicast router.
The switch is configured to operate in MVR dynamic mode. This mode allows
port 24, the MVR source port, to dynamically join the multicast group by
sending an IGMP join message tagged with the MVR VLAN to the multicast
router. In MVR compatible mode, the source port does not send IGMP join
746
Configuring L2 Multicast Features
MAC Address
----------------- -------
0100.5E01.0101
0100.5E01.0102
MAC Address
0100.5E01.0101
0100.5E01.0102
Type Ports
---------
Dynamic Te1/0/1
Dynamic Te1/0/2
Ports
------------------