•Multicast Source
Discovery Protocol
•draft-ietf-msdp-spec-xx
•Allows
each domain to control its own RP(s)
•Interconnect
RPs between domains with TCP connections to pass source active messages (SAs)
•Can
also be used within a domain to provide RP redundancy (Anycast-RP)
•RPs
send SA messages for internal sources to MSDP peers
•SAs
are Peer-RPF checked before accepting or forwarding
•RPs
learn about external sources via SA messages and may trigger (S,G)joins on behalf of local receivers
•MSDP
connections typically parallel MBGP connections