The Reliable Data Protocol (RDP) is a network transport protocol defined i
RFC 908
and was updated i
RFC 1151
It is meant to provide facilities for remote loading, debugging and bulk transfer of images and data. The Reliable Data Protocol is located on the Transport Layer of the

OSI model The Open Systems Interconnection model (OSI model) is a conceptual model that 'provides a common basis for the coordination of SOstandards development for the purpose of systems interconnection'. In the OSI reference model, the communications ...

next to protocols like TCP and UDP. It is number 27 in the

list of IP protocol numbers This is a list of the IP protocol numbers found in the field ''Protocol'' of the IPv4 header and the ''Next Header'' field of the IPv6 header. It is an identifier for the encapsulated protocol and determines the layout of the data that immediately ...

. Similar to TCP, the Reliable Data Protocol is connection oriented, but, contrary to TCP, it does not require sequenced delivery of segments. The Reliable Data Protocol has not gained popularity, though experimental implementations for BSD exist.

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See Also