Configuring a Default MSDP Peer

When a source-active message is received, a peer-reverse-path-forwarding (peer-RPF) check is performed to make sure the peer is toward the originating RP and to decide whether the source-active message should be accepted. However, in networks with only one MSDP peer, especially stub networks, there is no question that the source-active message should be accepted. An MSDP default peer is an MSDP peer from which all source-active messages are accepted without performing the peer-RPF check.

To establish an MSDP peer as the default peer, include the default-peer statement:

default-peer; 

You can establish a default peer at the peer or group level. For more information on MSDP peers and peer-RPF checks, see MSDP Overview.