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CLNP (Connectionless Network Protocol)

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CLNP is the equivalent of the IP (Internet Protocol) for OSI (Open Systems Interconnection) networks, with the primary difference being the size of the address. CLNP's address size is 20 bytes, as compared to IP's 4 bytes; so CLNP has an advantage over IP, which is experiencing an address shortage. However, the OSI protocols have not gained worldwide acceptance and do not appear to be viable for anything other than a reference model at this writing. CLNP exists in the network layer of the OSI protocol stack. As the name implies, it provides connectionless datagram services over OSI networks.

At one time, it was thought that OSI protocols would replace the Internet protocols on the government-funded Internet. The topic "Routing on the Internet" provides a historical perspective for this.




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