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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

After PIM is configured, multicast data can be routed and forwarded on an IPv4 network. PIM includes multiple modes that apply to different scenarios. Table 4-2 lists PIM configuration tasks.

Table 4-2  PIM configuration tasks
Task Description

Configuring IPv4 PIM-DM

PIM-DM uses the ASM model to provide multicast services. The configuration is simple, but multicast data is periodically broadcast. PIM-DM applies to the small nework where members are densely distributed.

Configuring IPv4 PIM-SM

PIM-SM uses the ASM and SSM models to provide multicast services. In the ASM model, a multicast distribution tree (MDT) is set up by receivers actively joining the multicast group. PIM-SM needs to maintain an RP, set up an RPT, and register with a multicast source. The ASM model applies to the large network where members are widely distributed. In the SSM model, PIM-SM sets up an SPT between a multicast source and members and does not need to maintain an RP, set up an RPT, or register with the multicast source. The SSM model applies to the network where users know the multicast source location and directly order multicast data from a specified multicast source.

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

To implement PIM multi-instance, configure PIM in multiple VPN instances. After PIM multi-instance is configured on the router, multicast data on private networks can be routed and forwarded in multicast mode in VPN instances. PIM multi-instance configurations in different VPN instances do not affect each other.
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Updated: 2019-06-12

Document ID: EDOC1000097181

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