The Border Gateway Multicast Protocol (BGMP) was an IETF project which attempted to design a true inter-domain multicast routing protocol. BGMP was planned to be able to scale in order to operate in the global Internet.
References
External links RFC 3913: Border Gateway Multicast Protocol] BGMP Protocol Specification. September 2004. Border Gateway Multicast Protocol IETF charter BGMP (Border-Gateway Multicast Protocol) Homepage