Configuring "Sending Sa Request Messages" On The Local Switch - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast
Applicable Environment
The capacity of SA Cache on certain switchs is small. When these switchs need to receive
multicast data, they cannot immediately obtain the valid (S, G) information and need to wait for
the SA message sent by their MSDP peers in the next period.
If SA Cache is enabled on the remote MSDP peer and the capacity of the SA Cache is large,
configuring "sending SA Request message" on the local switch can shorten the period during
which receivers obtain multicast source information.
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Pre-configuration Tasks
Before configuring an SA request, complete the following tasks:
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Data Preparation
To configure an SA request, you need the following data.
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8.7.2 Configuring "Sending SA Request Messages" on the Local
switch
When a device receives a new Join message and no corresponding (S, G) entry exists locally or
in the SA cache, the device immediately sends an SA Request message to the specified MSDP
peer rather than waits for the SA message in the next period.
Context
Do as follows on the local switch:
Issue 01 (2011-10-26)
When the local switch wants to receive (S, G) information, it sends an SA Request message
to a specified remote MSDP peer.
On receiving the SA Request message, the MSDP peer responds to the SA Request message
with the required (S, G) information. If the "filtering rule of SA Request message" is
configured on the remote MSDP peer, it checks the SA Request messages received from a
specified peers and determines whether to respond according to the checking results.
Configuring a unicast routing protocol to implement interconnection at the network layer
Enabling IP multicast
Configuring a PIM-SM domain to implement intra-domain multicast
Configuring PIM-SM Inter-domain Multicast
PIM-SM Domain
Data
Address of a remote MSDP peer
Filtering list for receiving SA request messages
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8 MSDP Configuration
or Configuring an Anycast RP in a
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