H3C Technologies H3C SecPath F1000-E - Manual (Page 71)

10
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 forward the message within the mesh group either. This mechanism not only avoids SA flooding
but also simplifies the RPF check mechanism, because BGP or MBGP 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 assign
those MSDP peers to that mesh group.
Follow these steps to create an MSDP mesh group:
To do... Use the command... Remarks
Enter system view system-view —
Enter public network MSDP view msdp —
Create an MSDP mesh group and
assign an MSDP peer to that mesh
group
peer peer-address mesh-group
name
Required
An MSDP peer does not belong to
any mesh group by default
NOTE:
•
Before grouping multiple routers into an MSDP mesh group, make sure that these routers are
interconnected with one another.
• If you configure more than one mesh group name on an MSDP peer, only the last configuration
is effective.
Configuring MSDP Peer Connection Control
MSDP peers are interconnected over TCP (port number 639). You can flexibly control sessions between
MSDP peers by manually deactivating and reactivating the MSDP peering connections. When the
connection between two MSDP peers is deactivated, SA messages will no longer be delivered between
them, and the TCP connection is closed without any connection setup retry, but the configuration
information will remain unchanged.
When a new MSDP peer is created, or when a previously deactivated MSDP peer connection is
reactivated, or when a previously failed MSDP peer attempts to resume operation, a TCP connection is
required. You can flexibly adjust the interval between MSDP peering connection retries.
Follow these steps to configure MSDP peer connection control:
To do... Use the command... Remarks
Enter system view system-view —
Enter public network MSDP view msdp —
Deactivate an MSDP peer shutdown peer-address
Optional
Active by default