Configuring MSDP Globally

To configure Multicast Source Discovery Protocol (MSDP) you must enable MSDP and configure the MSDP peers.
Note: The PIM Sparse Rendezvous Point (RP) can also be an MSDP peer.

It is strongly recommended that you use the connect-source loopback command when configuring the MSDP peers. If you do not use the connect-source loopback command, the device uses the IP address of the outgoing interface. You should also make sure the IP address of the connect-source loopback is the source IP address used by the PIM-RP, and the BGP device. Devices that run MSDP usually also run BGP.

  1. Enter global configuration mode. 
    device# configure terminal
  2. Enter loopback interface configuration mode. 
    device(config)# interface loopback 1
    The loopback interface is used as the source interface for sessions with the peer.
  3. Enter the IP address to be used as the source address for peer sessions. 
    device(config-lbif-1)# ip address 10.9.9.9/32
  4. Exit to global configuration mode. 
    device(config-lbif-1)# exit
  5. Enable MSDP. 
    device(config)# router msdp
  6. Configure MSDP peers. 
    device(config-msdp-router)# msdp-peer 205.216.162.1 connect-source loopback 1
    By default, the device uses the subnet address configured on the physical interface where you configure the neighbor as the source address for sessions with the neighbor.

The following example configures a loopback interface, enables MSDP, and configures a neighbor as an MSDP peer using the loopback interface as the source interface and address. 

device# configure terminal
device(config)# interface loopback 1
device(config-lbif-1)# ip address 10.9.9.9/32
device(config-lbif-1)# exit
device(config)# router msdp
device(config-msdp-router)# msdp-peer 205.216.162.1 connect-source loopback 1
Parent topic: Configuring Multicast Source Discovery Protocol