PGM Reliable Transport Protocol Specification

Status of this Memo This memo defines an Experimental Protocol for the Internet community. It does not specify an Inter-net standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. Abstract Pragmatic General Multicast (PGM) is a reliable multicast transport protocol for applications that require ordered or unordered, duplicate-free, multicast data delivery from multiple sources to multiple receivers. PGM guarantees that a receiver in the group either receives all data packets from transmissions and repairs, or is able to detect unrecoverable data packet loss. PGM is specifically intended as a workable solution for multicast applications with basic reliability requirements. Its central design goal is simplicity of operation with due regard for scalability and network efficiency.