Upper Layer Protocol
<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 stack.
