Msdp Configuration - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
About This Chapter
The MSDP protocol is used to implement multicast routing and data forwarding between PIM-
SM domains and anycast RP in a PIM-SM domain.
8.1 MSDP Overview
MSDP functions to set up an MSDP peer relationship between RPs in different PIM-SM
domains. MSDP peers exchange (S, G) information by sending SA messages. In this manner,
MSDP peers share multicast source information and hosts can receive multicast data from the
multicast sources in another PIM-SM domain.
8.2 MSDP Features Supported by the S3700
MSDP is used to implement PIM-SM inter-domain multicast and anycast RP in a PIM-SM
domain. You can control connections between MSDP peers, adjust SA message parameters, and
configure authentication for MSDP peers and filtering policies for SA messages to enhance
MSDP security. The system supports multi-instance MSDP.
8.3 Configuring PIM-SM Inter-domain Multicast
This section describes how to set up an MSDP peer relationship between PIM-SM domains in
an AS and how to configure MSDP peers.
8.4 Configuring an Anycast RP in a PIM-SM Domain
Anycast RP indicates that when multiple RPs with the same address reside in the same PIM-SM
domain and MSDP peer relationships are set up between these RPs, IP routing automatically
selects the topologically closest RP for each source and receiver. In this manner, burdens on a
single RP are released, RP backup is implemented, and the forwarding path is optimized.
8.5 Managing MSDP Peer Connections
MSDP peers should set up TCP connections. You can then flexibly control the sessions set up
between MSDP peers by closing or re-establishing TCP connections. You can also adjust the
interval for retrying to set up a TCP connection between MSDP peers.
8.6 Configuring SA Cache
An SA cache is used to save the (S, G) information carried in SA messages locally. When a
device needs to receive multicast data, it directly obtains available (S, G) information from the
SA cache.
8.7 Configuring the SA Request
If the capacity of the SA cache enabled on the remote MSDP peer is too large, configuring
"sending SA Request message" on the local device can shorten the time taken by a receiver to
Issue 01 (2011-10-26)
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MSDP Configuration

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