Dell PowerConnect B-RX Configuration Manual page 1146

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Enabling IP multicast traffic reduction
Configuring a multicast static group uplink per VLAN
When the multicast static-group uplink command is enabled on a snooping VLAN, the snooping
device behaves like an IGMP host on ports connected to the multicast router. The snooping device
will respond to IGMP queries from the uplink multicast PIM router for the groups and sources
configured. Upon the multicast router receiving the IGMP join message, it will initiate the PIM join
on its upstream path towards the source to pull the source traffic down. The source traffic will stop
at the IGMP snooping device. The traffic will then be forwarded to the multicast receiver and router
ports or dropped in hardware if no other multicast receiver and routers are present in the VLAN.
The multicast static-group uplink command can be configured under the VLAN configuration only.
When using IGMP v3, you can use the multicast static-group include or multicast static-group
exclude command to statically include or exclude multicast traffic, respectively for hosts that
cannot signal group membership dynamically.
To configure the snooping device to statically join a multicast group on the uplink interface, enter
commands such as the following.
BigIron RX(config)# vlan 100
BigIron RX(config-vlan-100)# multicast static-group 224.10.1.1 uplink
To configure the physical interface 10.43.3.12 to statically join a multicast group on port 2/4,
enter commands such as the following.
BigIron RX(config)# vlan 100
BigIron RX((config-vlan-100)# multicast static-group 224.10.1.1 2/4
To configure the snooping device to statically join a multicast stream with the source address of
10.43.1.12 in the include mode, enter commands such as the following.
BigIron RX(config)# vlan 100
BigIron RX(config-vlan-100)# multicast static-group 224.10.1.1 include 10.43.1.12
uplink
To configure the snooping device to statically join all multicast streams on the uplink interface
excluding the stream with source address 10.43.1.12, enter commands such as the following.
BigIron RX(config)# vlan 100
BigIron RX(config-vlan-100)# multicast static-group 224.10.1.1 exclude 10.43.1.12
uplink
Configuring multicast static group <port-list> per VLAN
When the multicast static-group <group-address> <port-list> command is enabled on a snooping
VLAN, the snooping device will add the ports to the outgoing interface list of the multicast group
entry in the forwarding table as if IGMP joins were received from these ports. These ports will not
be aged out from the multicast group for not responding to the IGMP queries.
It can be configured under the VLAN configuration level only.
To configure the physical interface ethernet 2/4 to statically join a multicast group, enter
commands such as the following.
BigIron RX(config)# vlan 100
BigIron RX(config-vlan-100)# multicast static-group 224.10.1.1 ethernet 2/4
To configure the physical interface ethernet 3/4 to statically join a multicast stream with source
address of 10.43.1.12 in the include mode, enter commands such as the following.
1070 BigIron RX Series Configuration Guide
53-1002253-01