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CLI-based Configuration Guide - IP Multicast

AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R007

This document describes the principles and configurations of IP multicast, and provides configuration examples.
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(Optional) Configuring the Router-Alert Option

(Optional) Configuring the Router-Alert Option

Context

By default, the router does not check whether IGMP messages contain the Router-Alert option and sends all the IGMP messages to the upper-layer routing protocol. To improve device performance, reduce transmission cost, and enhance protocol security, configure the router to discard IGMP messages without the Router-Alert option.

By default, the router sends IGMP messages with the Router-Alert option.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    vlan vlan-id

    The VLAN view is displayed.

  3. Run:

    igmp-snooping require-router-alert

    The device is configured to check whether IGMP messages contain the Router-Alert option.

  4. Run:

    igmp-snooping send-router-alert

    The device is configured to send only IGMP messages with the Router-Alert option.

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Updated: 2019-06-12

Document ID: EDOC1000097181

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