Controlling the Sessions Between MSDP Peers

After the connection between MSDP peers is closed, the MSDP peers no longer exchange Source Active (SA) messages and do not retry to set up a new connection. You can restart the connection between the MSDP peers as required.

Prerequisites

Before controlling the sessions between MSDP peers, complete the following tasks:

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 or Configuring PIM-SM Inter-domain Multicast

Context

MSDP peers are connected by the TCP connection (the port number is 639). Users can close or reestablish a TCP connection, and flexibly control the sessions set up between MSDP peers.

Procedure

Access the system view.
system-view
Access the MSDP view.
msdp [ vpn-instance vpn-instance-name ]
Close the session with the remote MSDP peer.
shutdown peer-address

The parameters of the command are explained as follows:
- peer-address: specifies the address of a remote MSDP peer.
- After the session with the remote MSDP peer is closed, the TCP connection is closed, the peers no longer transmit SA messages, and the peers do not re-try setting up the connection. The configuration, however, is saved.
- You can run the undo shutdown peer-address command to open the session with the remote MSDP peer, and reestablish the TCP connection.