3Com Switch 8800 Advanced Software V5 Configuration Guide

518 CHAPTER 39: IPV6 MULTICAST ROUTING AND FORWARDING CONFIGURATION
Configuring IPv6
Multicast Routing and
Forwarding
Enabling IPv6 Multicast
Routing
Before configuring any Layer 3 IPv6 multicast functionality, you must enable IPv6
multicast routing.
Follow these steps to enable IPv6 multicast routing:
Configuration
Prerequisites
Before configuring IPv6 multicast routing and forwarding, complete the following
tasks:
■ 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.
Before configuring IPv6 multicast routing and forwarding, prepare the following
data:
■ Minimum hop limit value required for an IPv6 multicast packet to be forwarded
■ Maximum number of downstream nodes for a single route in the IPv6 multicast
forwarding table
■ Maximum number of routing entries in the IPv6 multicast forwarding table
Configuring IPv6
Multicast Load Splitting
With the IPv6 multicast load splitting feature enabled, IPv6 multicast traffic will be
evenly distributed among different routes.
Follow these steps to enable IPv6 multicast load splitting:
Configuring an IPv6
Multicast Forwarding
Range
IPv6 multicast packets do not travel infinitely in a network. The IPv6 multicast data
of each IPv6 multicast group must be transmitted within a definite scope.
“Configuring an IPv6 Multicast Forwarding Range” on page 518 Optional
“Configuring the IPv6 Multicast Forwarding Table Size” on page 519 Optional
Task Remarks
To do... Use the Command... Remarks
Enter system view system-view -
Enable IPv6 multicast routing multicast ipv6
routing-enable
Required
Disabled by default
To do... Use the command... Remarks
Enter system view system-view -
Enable IPv6 multicast load
splitting
multicast ipv6
load-splitting {source |
source-group }
Required
Disabled by default