3Com Switch 8800 Advanced Software V5 Configuration Guide

618 CHAPTER 43: MSDP CONFIGURATION
Configuring an MSDP
Peer Connection
Configuration
Prerequisites
Before configuring MSDP peer connection, complete the following tasks:
■ Configure any unicast routing protocol so that all devices in the domain are
interoperable at the network layer.
■ Configuring basic functions of MSDP
Before configuring an MSDP peer connection, prepare the following data:
■ Description information of MSDP peers
■ Name of an MSDP mesh group
■ MSDP peer connection retry interval
Configuring MSDP Peer
Description
With the MSDP peer description information, the administrator can easily
distinguish different MSDP peers and thus better manage MSDP peers.
Follow these steps to configure description for an MSDP peer:
Configuring an MSDP
Mesh Group
An AS may contain multiple MSDP peers. You can use the MSDP mesh group
mechanism to avoid SA message flooding among these MSDP peers and optimize
the multicast traffic.
On one hand, an MSDP peer in an MSDP mesh group forwards SA messages from
outside the mesh group that have passed the RPF check to the other members in
the mesh group; on the other hand, a mesh group member accepts SA messages
from inside the group without performing an RPF check, and does not forwarded
the message within the mesh group either. This mechanism not only avoids SA
flooding but also simplifies the RPF check mechanism, because BGP is not needed
to run between these MSDP peers.
By configuring the same mesh group name for multiple MSDP peers, you can
create a mesh group with these MSDP peers.
Follow these steps to create an MSDP mesh group:
To do... Use the command... Remarks
Enter system view system-view -
Enter MSDP view msdp -
Configure description for an
MSDP peer
peer peer-address
description text
Required
No description for MSDP
peers by default
To do... Use the command... Remarks
Enter system view system-view -
Enter MSDP view msdp -