Brocade Multi-Service IronWare Multicast Configuration Gui Uživatelský manuál stáhnout pdf (Strana 142)

130 Multi-Service IronWare Multicast Configuration Guide

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IP multicast traffic reduction

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

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Brocade Multi-Service IronWare Multicast Configuration Gui Uživatelský manuál Strana 142