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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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Introduction to IPv6 Multicast Route Management

Introduction to IPv6 Multicast Route Management


Multicast route management refers to the control of multicast packet forwarding by creating or changing multicast routes, as well as checking and maintaining multicast forwarding paths.


Multicast route management ensures that multicast packets are forwarded efficiently through the correct paths.

In multicast routing and forwarding, each multicast routing protocol creates and maintains its own routing table. The routing information from these tables is then used to create a general multicast routing table. Multicast routers use this general multicast routing table to determine optimal routes, according to multicast routing and forwarding policies. The optimal route information is then delivered to the multicast forwarding information base (MFIB), where multicast data forwarding is controlled.

The MFIBs of network devices maintain a point-to-multipoint forwarding tree for the entire network, with a multicast source as the root and group members as leaves. Table 9-1 describes functions of multicast route management.

Table 9-1  Multicast route management functions
Function Description

Reverse Path Forwarding (RPF) check

Ensures that multicast data is forwarded through correct paths.

Multicast load splitting

Distributes multicast data to multiple equal-cost routes to reduce the load on individual paths.

Updated: 2019-06-12

Document ID: EDOC1000097181

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