Pim-Ipv6 Overview; Pim-Sm Features Supported By The S7700 - Huawei Quidway S7700 Configuration Manual - Multicast

Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast

13.1 PIM-IPv6 Overview

In an IPv6 PIM-SM network, group members are sparsely distributed and almost all the network
segments do not have group members resided. Therefore, an RP is a forwarding core of the PIM-
SM network. All PIM devices in the PIM-SM network must know the location of the RP and
the RP collects information about both group members and multicast sources.
In the IPv4 multicast applications, the Protocol Independent Multicast (PIM) is used to set
multicast routes between switchs to replicate and forward multicast packets.
In IPv6 multicast applications, switchs run PIM-IPv6. The functions and principles of PIM-IPv6
are similar to the functions of PIM-IPv4.
PIM-IPv6 consists of the following separate protocols:
l
l

13.2 PIM-SM Features Supported by the S7700

You are allowed to adjust parameters related to neighbor discovery, forwarding, DR, RP, join,
register, and assert. In addition, you can configure various filtering policies and the PIM silent
function to enhance the PIM-SM security. IPv6 PIM-SM supports SSM, PIM GR, and SPT
switchover.
Embedded-RP
Based on PIM-SM (IPv4), embedded-Rendezvous Point (Embedded-RP) is added in PIM-SM
(IPv6). The embedded-RP is a method of obtaining an RP. The function of the embedded-RP is
the same as that of the static RP and the dynamic RP.
Static RP
You can specify the static RP on all switchs in the PIM-SM domain. When a dynamic RP exists
in the domain, the dynamic RP is preferred by default, but you can configure the static RP to be
preferred.
Dynamic RP
You can specify a C-RP in a BSR domain, adjust the priority for C-RP election, adjust the lifetime
of the advertisement message on the BSR received from the C-RP, adjust the interval for the C-
Issue 01 (2011-07-15)
PIM-DM: indicates the Protocol Independent Multicast-Dense Mode. PIM-DM is
applicable to a small-scale network with densely-distributed members. The network adopts
the Any-Source Multicast (ASM) model to implement multicast services.
PIM-SM: indicates the Protocol Independent Multicast-Sparse Mode. PIM-SM is
applicable to a large-scale network with sparsely-distributed members. The network adopts
the ASM and Source-Specific Multicast (SSM) models to implement multicast services.
NOTE
l This chapter describes only the PIM-SM configuration in the IPv6 network. PIM-SM in this chapter
refers to the IPv6 PIM-SM, unless otherwise specified.
l For the configuration of PIM-DM, refer to the chapter
l For details of ASM and SSM models, refer to the chapter "IP Multicast Overview" in the Quidway
S7700 Smart Routing Switch Feature Description - IP Multicast.
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13 PIM-SM (IPv6) Configuration
PIM-DM (IPv6) Configuration.
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