3Com Switch 8800 Family Configuration Guide

MSDP Configuration 481
Controlling the Received
Source Information
Please perform the following configurations in MSDP view.
Similar to MSDP outbound filter in function, MSDP inbound filter controls the
received SA messages. By default, the SA messages from all peers are accepted.
Configuring MSDP Mesh
Group
Mesh Group is useful when full connection among MSDP peers is required but SA
message flooding shall be prevented.
In a Mesh group, the SA messages from outside the group are forwarded to other
members in the group, but the SA messages from peers inside the group will not
be performed with Peer-RPF check or forwarded in the group. In this case, the
overflow of SA messages is avoided and Peer-RPF is simplified, as BGP or MBGP is
not required between MSDP peers.
Please perform the following configurations in MSDP view.
If an MSDP peer is configured into different mesh groups, only the last
configuration is valid.
Configuring the MSDP
Connection Retry Period
Perform the following configurations in MSDP view.
By default, MSDP connection is retried at the interval of 30 seconds.
Shutting MSDP Peers
Down
The session between MSDP peers can be cut off and re-activated as needed.
If a session between MSDP peers is cut off, the TCP connection will terminate with
no retry effort, but the configuration information will be reserved.
Please perform the following configurations in MSDP view.
Tab le 476 Control the received source information
Operation Command
Filter off the SA messages from a specified
MSDP peer
peer peer-address sa-policy import
Receive the SA messages permitted by the
advanced ACL from a specified MSDP peer
peer peer-address sa-policy import acl
acl-number
Remove the filtering rule over received source
information
undo peer peer-address sa-policy import
Tab le 477 Configure MSDP full connection group
Operation Command
Configure an MSDP peer to be a member of
an MSDP Mesh Group
peer peer-address mesh-group name
Delete that member from the Group undo peer peer-address mesh-group name
Tab le 478 Configure the MSDP connection retry period
Operation Command
Configuring the MSDP connection retry
period
timer retry seconds
Restore the default value of MSDP connection
retry interval
undo timer retry