Configuration Prerequisites - HP FlexNetwork 7500 Series Configuration Manual

Configuration prerequisites

Before you configure an MSDP peering connection, complete the following tasks:
•
Configure a unicast routing protocol so that all devices in the domain can interoperate at the
network layer.
•
Configure basic MSDP features.
Configuring a description for an MSDP peer
This feature helps administrators easily distinguish an MSDP peer from other MSDP peers.
To configure a description for an MSDP peer:
Step
Enter system view.
1.
Enter MSDP view.
2.
Configure a description for
3.
an MSDP peer.
Configuring an MSDP mesh group
This feature avoids SA message flooding among MSDP peers within an AS. It also simplifies the
RPF check mechanism because you do not need to run BGP or MBGP between these MSDP peers.
When receiving an SA message from outside the mesh group, a member MSDP peer performs the
RPF check on the SA message. If the SA message passes the RPF check, the member MSDP peer
floods the message to the other members in the mesh group. When receiving an SA message from
another member, the MSDP peer neither performs an RPF check on the message nor forwards the
message to the other members.
To organize multiple MSDP peers in a mesh group, assign the same mesh group name to these
MSDP peers. Before doing this, make sure the routers are interconnected with one another.
To create an MSDP mesh group:
Step
Enter system view.
1.
Enter MSDP view.
2.
Configure an MSDP mesh
3.
group.
Controlling MSDP peering connections
MSDP peers are interconnected over TCP (port number 639). You can tear down or re-establish
MSDP peering connections to control SA message exchange between the MSDP peers. When the
connection between two MSDP peers is torn down, SA messages are no longer delivered between
Command
system-view
msdp [ vpn-instance
vpn-instance-name ]
peer peer-address description
text
Command
system-view
msdp [ vpn-instance
vpn-instance-name ]
peer peer-address mesh-group
name
157
Remarks
N/A
N/A
By default, an MSDP peer is not
configured with any description.
Remarks
N/A
N/A
By default, an MSDP peer does
not belong to any mesh group.
If you assign an MSDP peer to
multiple mesh groups, the most
recent configuration takes effect.