R3303-HP HSR6800 Routers IP Multicast Configuration Guide

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across the GRE tunnel through unicast routers. Then, Router B strips off the unicast IPv6 header and

continues to forward the IPv6 multicast data down toward the receivers.

Configuration task list

Task Remarks

Enabling IPv6 multicast routing Required.

Configuring IPv6 multicast

routing and forwarding

Configuring an IPv6 multicast routing policy Optional.

Configuring an IPv6 multicast forwarding range Optional.

Configuring the IPv6 multicast forwarding table size Optional.

Configuring IPv6 static multicast MAC address entries Optional.

Enabling IPv6 multicast routing

Before you configure any Layer 3 IPv6 multicast functionality, you must enable IPv6 multicast routing.

To enable IPv6 multicast routing:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enable IPv6 multicast routing.

multicast ipv6 routing-enable Disabled by default.

Configuring IPv6 multicast routing and forwarding

This section describes how to configure IPv6 multicast routing and forwarding.

Configuration prerequisites

Before you configure IPv6 multicast routing and forwarding, complete the following tasks:

• Enable IPv6 forwarding and configure an IPv6 unicast routing protocol so that all devices in the

domain are interoperable at the network layer.

• Configure IPv6 PIM-DM or IPv6 PIM-SM.

• Determine the minimum hop limit value required for an IPv6 multicast packet to be forwarded.

• Determine the maximum number of downstream nodes for a single entry in the IPv6 multicast

forwarding table.

• Determine the maximum number of entries in the IPv6 multicast forwarding table.