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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Configuring IGMP Static-Group Join

Configuring IGMP Static-Group Join

After an interface on a multicast device is configured to statically join an IGMP group, the multicast device considers that the interface has static multicast group member and forwards multicast packets to this interface, irrespective of whether hosts connected to this interface request the multicast packets.

Usage Scenario

If users on a user network segment frequently request multicast data, configure an interface connected to this network segment to statically join an IGMP group. Then, the interface can rapidly respond to users' requests, which shortens the channel switching delay.

Pre-configuration Tasks

Before configuring an IGMP user to statically join a multicast group, complete the following tasks:


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run igmp static-group group-address [ inc-step-mask { group-mask | group-mask-length } number group-number ] [ source source-address ]

    The interface is configured to statically join an IGMP group.

    The igmp static-group command can be run only on interfaces that connect to user hosts. The command allows you to add an interface to a single or multiple groups at a time, including source-specific groups.

    After an interface is configured to statically join a multicast group, multicast entries generated on this interface never expire. Therefore, the router keeps forwarding multicast data to the interface. If the interface no longer requires multicast data of a group, run the undo igmp static-group command to delete the interface from the group.

  4. Run commit

    The configuration is committed.

Checking the Configurations

Run the display igmp [ vpn-instance vpn-instance-name | all-instance ] group [ group-address | interface interface-type interface-number ] * [ static ] [ verbose ] command to check information about IGMP group members.

# Run the display igmp group static command. The command output shows information about the multicast groups that interfaces in the public network instance statically join.

<HUAWEI> display igmp group static
Static join group information of VPN-Instance: public net 
  Total 2 entries   
   Group Address   Source Address  Expires         never         never 
  Total 1 entry   
   Group Address   Source Address  Expires         never 
Updated: 2019-01-03

Document ID: EDOC1100055017

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