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CLI-based Configuration Guide - IP Multicast

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.
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Configuring IPv6 PIM-SM in the SSM Model

Configuring IPv6 PIM-SM in the SSM Model

Pre-configuration Tasks

Before configuring IPv6 PIM-SM in the SSM model, configure an IPv6 unicast routing protocol to ensure that unicast routes on the network are reachable.


An IPv6 PIM-SM network uses the SSM model to provide specified multicast services for user hosts. User hosts in a multicast group can receive multicast data sent from the specified multicast source to this group.

Configuration Procedure

Enabling IPv6 PIM-SM is a mandatory procedure. Configuring an SSM group policy can control the address range of SSM groups. This operation is optional.

Enabling IPv6 PIM-SM


IPv6 PIM-DM and IPv6 PIM-SM cannot be enabled simultaneously on the device.

It is recommended that you enable IPv6 PIM-SM on all interfaces in a PIM-SM domain, so that the interfaces can establish neighbor relationships with all connected PIM devices.

If IPv6 PIM-SM and MLD need to be enabled on the same interface, enable IPv6 PIM-SM, and then enable MLD.


  1. Run system-view

    The system view is displayed.

  2. Run multicast ipv6 routing-enable

    The IPv6 multicast routing function is enabled.

  3. Run interface interface-type interface-number

    The interface view is displayed.

  4. Run pim ipv6 sm

    IPv6 PIM-SM is enabled.

(Optional) Configuring an SSM Group Policy


By default, the address range of SSM groups is FF3x::/32 (x cannot be 1 or 2). You can configure an SSM group policy to control the SSM group address range for the following purposes:
  • Limiting the SSM group address range to ensure security of multicast networks
  • Expanding the SSM group address range if the addresses in the default range are insufficient


  1. Run system-view

    The system view is displayed.

  2. Run pim-ipv6

    The PIM-IPv6 view is displayed.

  3. Run ssm-policy { basic-acl6-number | acl6-name acl6-name }

    The SSM group address range is configured.


    Ensure that the SSM group address range of all devices in the network are the same.

Verifying the Configuration of IPv6 PIM-SM in the SSM Model


After configuration of IPv6 PIM-SM in SSM model is complete, you can check the IPv6 PIM interface, IPv6 PIM neighbor, and IPv6 PIM routing table.


  • Run the display pim ipv6 interface [ interface-type interface-number | up | down ] [ verbose ] command to check IPv6 PIM information on an interface.
  • Run the display pim ipv6 neighbor [ ipv6-link-local-address | interface interface-type interface-number | verbose ] * command to check information about IPv6 PIM neighbors.
  • Run the following commands to check the IPv6 PIM routing table.

    • display pim ipv6 routing-table [ ipv6-source-address [ mask mask-length ] | ipv6-group-address [ mask mask-length ] | flags flag-value | fsm | incoming-interface { interface-type interface-number | register } | mode { dm | sm | ssm } | outgoing-interface { exclude | include | match } { interface-type interface-number | none | register } ] * [ outgoing-interface-number [ number ] ]
    • display pim ipv6 routing-table brief [ ipv6-source-address [ mask mask-length ] | ipv6-group-address [ mask mask-length ] | incoming-interface { interface-type interface-number | register } ] *

Updated: 2019-08-09

Document ID: EDOC1100034230

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