igmp-snooping ssm-mapping enable

Function

The igmp-snooping ssm-mapping enable command enables source-specific multicast (SSM) mapping in a VSI.

The undo igmp-snooping ssm-mapping enable command disables SSM mapping in a VSI.

By default, SSM mapping is disabled in a VSI.

Format

igmp-snooping ssm-mapping enable

undo igmp-snooping ssm-mapping enable

Parameters

None

Views

VSI view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On an SSM network, hosts running IGMPv1 or IGMPv2 cannot select multicast sources when they join a multicast group. To provide SSM services for these hosts, enable SSM mapping on the switch.

Prerequisites

IGMP snooping has been enabled for VPLS using the igmp-snooping over-vpls enable command.
The IGMP message version is set to v3 using the igmp-snooping version command in the VSI.

Follow-up Procedure

If the multicast group address is an any-source multicast (ASM) address, configure an SSM group policy to add the multicast group address to the SSM group range using the igmp-snooping ssm-policy command in the VSI view.

Run the igmp-snooping ssm-mapping command to configure mapping between multicast groups and multicast sources.

Precautions

The configuration takes effect only when IGMP snooping is enabled in the VSI using the igmp-snooping enable (VSI view) command.

Example

# Enable SSM mapping in VSI company1.

<HUAWEI> system-view
[HUAWEI] igmp-snooping enable
[HUAWEI] igmp-snooping over-vpls enable
[HUAWEI] vsi company1
[HUAWEI-vsi-company1] igmp-snooping enable
[HUAWEI-vsi-company1] igmp-snooping version 3
[HUAWEI-vsi-company1] igmp-snooping ssm-mapping enable