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CLI-based Configuration Guide - IP Multicast

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Configuring PIM-SM in the SSM Model

Configuring PIM-SM in the SSM Model

Context

A PIM-SM network uses the Source-Specific Multicast (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.

Pre-configuration Tasks

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

Configuration Procedure

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

Enabling PIM-SM

Context

PIM-DM and PIM-SM cannot be enabled simultaneously in the public network instance or VPN instance.

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

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

Procedure

  • Enable PIM-SM for a public network instance.
    1. Run system-view

      The system view is displayed.

    2. Run multicast routing-enable

      IP multicast routing is enabled.

    3. Run interface interface-type interface-number

      The interface view is displayed.

    4. Run pim sm

      PIM-SM is enabled.

  • Enable PIM-SM for a VPN instance.

    A VPN instance must exist before you enable PIM-SM in the VPN instance.

    1. Run system-view

      The system view is displayed.

    2. Run ip vpn-instance vpn-instance-name

      The VPN instance view is displayed.

    3. Run multicast routing-enable

      IP multicast routing is enabled.

    4. Run quit

      Return to the system view.

    5. Run interface interface-type interface-number

      The interface view is displayed.

    6. Run ip binding vpn-instance vpn-instance-name

      The interface is associated with a specified VPN instance.

    7. Run pim sm

      PIM-SM is enabled.

(Optional) Configuring an SSM Group Policy

Context

By default, the Source-Specific Multicast (SSM) group address range is 232.0.0.0/8. Sometimes, the address range of SSM groups must be limited to ensure security of multicast networks. If the addresses in the default range are insufficient, the SSM group address range needs to be expanded. You can configure an SSM group policy to control the address range of SSM groups.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run pim [ vpn-instance vpn-instance-name ]

    The PIM view is displayed.

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

    The SSM group address range is configured.

    NOTE:

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

Verifying the Configuration of PIM-SM in the SSM Model

Prerequisites

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

Procedure

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

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

    • display pim [ vpn-instance vpn-instance-name | all-instance ] routing-table brief [ group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | incoming-interface { interface-type interface-number | register } ] *

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Updated: 2019-03-06

Document ID: EDOC1100069332

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