12 PIM-DM (IPv6) Configuration
About This Chapter
The PIM protocol can be used in an IPv6 network to implement multicast routing and data
forwarding inside an AS. The PIM-DM protocol is a multicast routing protocol of dense node.
It is applicable to a small-scale network with densely-distributed members.
12.1 PIM-IPv6 Overview
In the IPv6 network where multicast group members are densely distributed and each network
segment may have multicast group members, PIM-DM builds a unidirectional and loop-free
SPT from the multicast source to the group member through periodical flooding and pruning.
12.2 PIM-DM Features Supported by the S7700
The system can work normally with default PIM-DM parameters. You are also allowed to adjust
parameters related to neighbor discovery, prune, state refresh, graft, and assert according to
specific scenarios. In addition, you can configure various filtering policies and the PIM silent
function to enhance the IPv6 PIM-DM security.
12.3 Configuring Basic PIM-DM (IPv6) Functions
Ensure that unicast routes are reachable before configuring IPv6 multicast routing and enable
IPv6 PIM-DM on each interface of the multicast device. In this manner, the IPv6 PIM-DM
network can work normally.
12.4 Adjusting Control Parameters of a Source
A multicast device can control the forwarding of multicast data based on multicast sources. This
helps to control multicast data flows and limit information that can be obtained by downstream
receivers to enhance security.
12.5 Adjusting Control Parameters for Maintaining Neighbors
Multicast devices establish PIM neighbor relationships and negotiate various control parameters
by exchanging Hello messages. You can adjust the parameters carried in Hello messages as
required. If there is no special requirement, adopt default values.
12.6 Adjusting Control Parameters for Prune
When the last member leaves a group, the multicast device sends a Prune message upstream,
requesting the upstream device to execute the prune operation. If other downstream devices on
the same network segment need the multicast data for this group, they need to send Join messages
to override the prune operation. You can adjust control parameters of Join/Prune messages as
required. If there is no special requirement, adopt default values.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 12 PIM-DM (IPv6) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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