Brocade BigIron RX Series Configuration Guide - Manual (Page 1235)

BigIron RX Series Configuration Guide 1157
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PIM SM traffic snooping
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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.
BigIron RX(config)# vlan 100
BigIron RX(config-vlan-100)# multicast static-group 224.10.1.1 include 10.43.1.12
ethernet 3/4
To configure the physical interface ethernet 3/4 to statically join all multicast streams on the uplink
interface excluding the stream with source address of 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
ethernet 3/4
Syntax: [no] multicast static-group <group-address> uplink
Syntax: [no] multicast static-group <group-address> <port-list>
IGMP v3 commands
Syntax: [no] multicast static-group <group-address> [include l exclude <source-address>] uplink
Syntax: [no] multicast static-group <group-address> [include l exclude <source-address>]
<port-list>
The group-address parameter specifies the group multicast address.
The include or exclude keyword indicates a filtering action. You can specify which source (for a
group) to include or exclude. The include or exclude keyword is only supported on IGMPv3.
The source-address parameter specifies the IP address of the multicast source. Each address must
be added or deleted one line per source.
The uplink parameter specifies the port as an uplink port that can receive multicast data for the
configured multicast groups. Upstream traffic will be sent to the router and will not use a port.
The port-list parameter specifies the range of ports to include in the configuration.
The no form of this command removes the static multicast definition. Each configuration must be
deleted separately.
PIM SM traffic snooping
By default, when a BigIron RX receives an IP multicast packet, the device does not examine the
multicast information in the packet. Instead, the device simply forwards the packet out all ports
except the port that received the packet. In some networks, this method can cause unnecessary
traffic overhead in the network. For example, if the device is attached to only one group source and
two group receivers, but has devices attached to every port, the device forwards group traffic out all
ports in the same broadcast domain except the port attached to the source, even though there are
only two receivers for the group.
PIM SM traffic snooping eliminates the superfluous traffic by configuring the device to forward IP
multicast group traffic only on the ports that are attached to receivers for the group.