<protocol> 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
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terms: upload « UPMAIL Tricia Prolog « upper bound « Upper Layer
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