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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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Configuration Task Summary

Configuration Task Summary

Table 10-3 lists IGMP snooping configuration tasks.

Table 10-3  IGMP snooping configuration tasks

Task

Description

Configuring Basic IGMP Snooping Functions

When multicast data is forwarded to a Layer 2 multicast device connected to a user network segment, configure IGMP snooping on the Layer 2 multicast device to prevent multicast data from being flooded in the broadcast domain and to accurately forward multicast data at Layer 2. After IGMP snooping is configured, the Layer 2 multicast device can snoop and analyze IGMP messages between multicast users and the upstream router. The Layer 2 multicast device sets up Layer 2 multicast forwarding entries to control forwarding of multicast data. In this way, multicast data is not broadcast on the Layer 2 network.

Configuring an IGMP Snooping Policy

To filter out multicast messages on a Layer 2 multicast device or limit the range of multicast groups that hosts can join, configure an IGMP snooping policy on the Layer 2 multicast device.

Configuring Membership Fast-Update

To improve running efficiency of multicast services and user experience, configure quick membership update on a Layer 2 multicast device so that the Layer 2 multicast device quickly updates entries when receiver hosts join or leave a multicast group.

Configuring IGMP Snooping SSM Mapping

On a Layer 2 network, some receiver hosts can only run IGMPv1 or IGMPv2. To allow these hosts to use SSM, configure IGMP snooping SSM mapping on the Layer 2 multicast device.

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Updated: 2019-06-12

Document ID: EDOC1000097181

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