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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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Summary of IGMP Configuration Tasks

Summary of IGMP Configuration Tasks

Table 2-7  IGMP configuration tasks




Configure basic IGMP functions

To configure receiver hosts to join a multicast network and receive multicast data, you must configure basic IGMP functions on the industrial switch router interfaces connected to the receiver hosts.

Configuring Basic IGMP Functions

Optimize IGMP performance

With basic IGMP functions configured, a multicast industrial switch router can exchange IGMP messages with receiver hosts using default settings. You can optimize IGMP performance on the industrial switch router according to network security and performance requirements.

Optimizing IGMP Performance

Configure IGMP SSM mapping

The source-specific multicast (SSM) model allows IGMPv3 hosts to specify the multicast sources from which they want to receive data. To allow receiver hosts running IGMPv1 or IGMPv2 to use the SSM service, configure IGMP SSM mapping on the multicast industrial switch router.

Configuring IGMP SSM Mapping

Configure IGMP limit

You can configure an IGMP limit on the multicast switch to limit the number of group memberships on an interface or in the system. This improves network stability and performance. Without an IGMP limit, the number of groups and group members is unlimited, and can therefore cause performance degradation on a multicast industrial switch router.

Configuring IGMP Limit

Configure the IGMP proxy function

In a simple tree topology, the multicast router directly connected to a user network segment does not need to run complex multicast routing protocols such as PIM. However, if the multicast router transparently forwards IGMP messages, the upstream access device must manage a large number of users. In this case, configure the IGMP proxy function on the multicast router to enable the router to collect IGMP Report and Leave messages from receiver hosts before sending these messages to the upstream access device. In addition, the router maintains membership and forwards multicast messages based on the membership. To the upstream access device, the multicast router is a host.

Configuring IGMP Proxy

Configure multi-instance IGMP

To implement multi-instance IGMP, configure IGMP in multiple VPN instances. Multi-instance IGMP enables theindustrial switch router to exchange IGMP messages with receiver hosts on a private network, so that it can manage group membership on the private network. IGMP configurations in different VPN instances do not affect each other.

The multi-instance IGMP configuration is included in all configuration tasks.

Updated: 2019-08-09

Document ID: EDOC1100034230

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