Col> 1. (ULP, or upper-layer protoCol) Any protoCol residing in OSI layers five or above. The Internet protoCol suite inCludes many upper layer protoCols representing a wide variety of appliCations e.g. FTP, NFS, RPC, and SMTP. These and other network appliCations use the serviCes of TCP/IP and other {lower layer protoCols} to provide users with basiC network serviCes. 2. A protoCol higher in the OSI referenCe model than the Current referenCe point. Upper Layer ProtoCol is often used to refer to the next-highest protoCol in a partiCular protoCol staCk. (1999-02-17)
