Ipv6 multicast routing and forwarding overview – H3C Technologies H3C S7500E Series Switches User Manual

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IPv6 Multicast Routing and Forwarding

Configuration

When configuring IPv6 multicast routing and forwarding, go to the following sections for

information you are interested in:

The term “router” in this document refers to a router in a generic sense or a Layer 3 switch

running an IPv6 multicast routing protocol.

The S7500E Series Ethernet Switches are distributed devices that support Intelligent

Resilient Framework (IRF). Two S7500E series can be connected together to form a

distributed IRF device. If an S7500E series is not in any IRF, it operates as a distributed

device; if the S7500E series is in an IRF, it operates as a distributed IRF device. For

introduction of IRF, refer to IRF Configuration in the IRF Configuration Guide.

EA cards (such as LSQ1GP12EA and LSQ1TGX1EA) do not support IPv6 features.

IPv6 Multicast Routing and Forwarding Overview

Introduction to IPv6 Multicast Routing and Forwarding

In IPv6 multicast implementations, multicast routing and forwarding are implemented by three

types of tables:

Each IPv6 multicast routing protocol has its own multicast routing table, such as IPv6 PIM

routing table.

The multicast routing information of different IPv6 multicast routing protocols forms a

general IPv6 multicast routing table.

The IPv6 multicast forwarding table is directly used to control the forwarding of IPv6

multicast packets. This is the table that guides IPv6 multicast forwarding.

An IPv6 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 IPv6 multicast protocols, its IPv6 multicast routing table will include routes

generated by these protocols. The router chooses the optimal route from the IPv6 multicast

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