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Configuration Guide - IP Multicast

S7700 and S9700 V200R010C00

This document describes IP multicast basics and how to configure IP multicast features, including IGMP/MLD, PIM (IPv4&IPv6), MSDP, multicast VPN, Layer 3 multicast CAC, Layer 2 multicast CAC, IGMP/MLD snooping, and multicast VLAN, IPv4&IPv6 multicast route management, static multicast MAC address, multicast network.
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Configuring VSI-based IGMP Snooping SSM Mapping

Configuring VSI-based IGMP Snooping SSM Mapping

Pre-configuration Tasks

Enabling IGMP Snooping

Configuration Process

Configuring IGMP Snooping Multicast SSM Mapping is mandatory and (Optional) Configuring an SSM Group Policy is optional.

(Optional) Configuring an SSM Group Policy

Context

If a user joins an any-source multicast (ASM) group, configure a source-specific multicast (SSM) group policy in the virtual switching instance (VSI) to add the multicast group address to the SSM group address range.
NOTE:

By default, the access control list (ACL) applied to an SSM group policy denies all multicast groups. To exclude specific group addresses from the SSM group address range, use a rule permit source any rule with deny rules in the ACL.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    vsi vsi-name

    The VSI view is displayed.

  3. Run:

    igmp-snooping ssm-policy basic-acl-number

    An SSM group policy is configured.

    By default, SSM group addresses range from 232.0.0.0 to 232.255.255.255. After you configure an SSM group policy, the multicast groups specified in the SSM policy are treated as SSM groups.

Configuring IGMP Snooping Multicast SSM Mapping

Context

By configuring SSM mapping, you can set up one-to-one mappings between multicast groups and multicast sources.

SSM mapping applies to a VSI only when the IGMP snooping version running in the VSI is V3.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    vsi vsi-name

    The VSI view is displayed.

  3. Run:

    igmp-snooping version 3

    The IGMP snooping version is set to V3.

    The default IGMP snooping version is V2, but this version does not support SSM mapping.

  4. Run:

    igmp-snooping ssm-mapping enable

    SSM mapping is enabled in the VSI.

    By default, SSM mapping is disabled.

  5. Run:

    igmp-snooping ssm-mapping ip-group-address { ip-group-mask | mask-length } ip-source-address

    The mapping between a multicast group address and a multicast source is configured.

Checking the Configuration

Prerequisites

The SSM mapping configuration is complete.

Procedure

  • Run the display igmp-snooping port-info [ vsi vsi-name [ group-address group-address ] ] [ verbose ] command to check information about IGMP snooping interfaces.
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Updated: 2019-08-21

Document ID: EDOC1000141903

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