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Application example – Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Multicast Configuration Guide

53-1003032-02

IP multicast traffic reduction

1

This command enables PIM SM traffic snooping.

To disable the feature, enter the following command.

Brocade(config)# no ip pimsm-snooping

If you also want to disable IP multicast traffic reduction, enter the following command.

Brocade(config)# no ip multicast

Multicast traffic reduction per VLAN or VPLS instance

You can configure the following methods for reducing multicast traffic globally on a Brocade device:

IGMP snooping – This is described in

“Changing the IGMP mode”

.

PIM snooping – This is described in

“PIM SM traffic snooping”

.

When these are set globally on a router, they apply to all VLANs and all VPLS instances that are
configured on the router. You can configure specified VLANs or VPLS instances for multicast traffic
reduction by these methods as described in the following sections. Additionally, you are able to
configure IGMP and PIM proxy which are only configurable per VLAN or VPLS instance.

Multicast traffic reduction per VPLS instance is supported for dual-mode, untagged, single-tagged,
and dual-tagged VPLS endpoints.

Configuration Notes

IP multicast traffic reduction per VPLS instance supports a maximum of up to 2000 IP
multicast groups.

IGMP snooping cannot be concurrently enabled on Brocade MLX series and Brocade NetIron
XMR devices with VPLS CPU Protection on a VPLS instance.

IGMP Snooping cannot be configured on Brocade MLX series and Brocade NetIron XMR
devices when a VPLS instance has ISID endpoints.

Traffic will continue to be forwarded only to those VPLS endpoints or peers from which a join for
the (S, G) has been received irrespective of the status of the local switching option.

Application example

Figure 18

shows an example of multicast traffic reduction in a VPLS network.

FIGURE 18

IP multicast traffic reduction in a VPLS network