Multicast Routing And Forwarding Overview - H3C S3610-28P Operation Manual

Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
Chapter 8 Multicast Routing and Forwarding
When configuring multicast routing and forwarding, go to these sections for information
you are interested in:

Multicast Routing and Forwarding Overview

Configuring Multicast Routing and Forwarding
Displaying and Maintaining Multicast Routing and Forwarding
Configuration Examples
Troubleshooting Multicast Routing and Forwarding
Note:
The term "router" in this document refers to a router in a generic sense or a Layer 3
switch running an IP routing protocol.
8.1 Multicast Routing and Forwarding Overview
8.1.1 Introduction to Multicast Routing and Forwarding
In multicast implementations, multicast routing and forwarding are implemented by
three types of tables:
Each multicast routing protocol has its own multicast routing table, such as PIM
routing table.
The information of different multicast routing protocols forms a general multicast
routing table.
The multicast forwarding table is directly used to control the forwarding of
multicast packets.
A multicast forwarding table consists of a set of (S, G) entries, each indicating the
routing information for delivering multicast data from a multicast source to a multicast
group. If a router supports multiple multicast protocols, its multicast routing table will
include routes generated by multiple protocols. The router chooses the optimal route
from the multicast routing table based on the configured multicast routing and
forwarding policy and installs the route entry into its multicast forwarding table.
Configuration
8-1
Chapter 8 Multicast Routing and Forwarding
Configuration