Chapter 13
IPv6 PIM-DM Configuration
Table of Contents
13.1 PIM-DM Overview
In the Protocol Independent Multicast-Dense Mode (
), it is assumed that there are
many multicast receivers which are distributed on most network devices. Based on the
above application mode, the mechanism of the PIM-DM protocol is relatively simple. It
diffuses the multicast traffic to all devices in the network periodically through the
PUSH
mode, and then establish and maintain an
forwarding tree.
l
With PIM-DM, it is assumed that each sub-net in the network has at least one member
existing in a multicast group. In this case, the multicast data is diffused to all nodes in
the network.
l
PIM-DM will cut the branches with no forwarded multicast data, and save only
the branches with a receiver.
The "diffuse-cut branches" operation takes place
periodically, and the cut branches recover to forwarding status periodically.
l
When the cut branches have a member that exists in the multicast group, this node
sends messages to the upper stream actively. In this case, this node changes to the
forwarding status, and the multicast data is forwarded to this branch.
13.2 Configuring IPv6 PIM-DM
This procedure describes how to configure IPv6 PIM-DM.
Steps
1.
Configure IPv6 PIM-DM.
Step
Command
Function
1
ZXR10(config)#
ipv6 multicast-routing
Enables the IPv6 multicast.
2
ZXR10(config-mcast-ipv6)#
router pim
Enables the PIM protocol of the IPv6
multicast.
3
ZXR10(config-mcast-ipv6-pim)#
interface
<
interface-name
>
Enters the IPv6 PIM interface configuration
mode.
13-1
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