Multicast Source Discovery Protocol (MSDP)

Multicast Source Discovery Protocol (MSDP)

• used for inter-domain (i.e. between autonomous systems) multicasting
• is an extension of PIM-SM
• each rendezvous point RP in a domain connects with other RP(s) in a different domain via TCP
• each RP periodically uses MSDP to broadcast Source Active messages to its peers
  • Source Active message contains:
    • IP address of the source
    • multicast group address
    • IP address of the originating RP