Unconnected Network Protocol CLNP is an ISO network layer datagram protocol that defines in the International Standardization ISO 7498 reference model. The CLNP is similar to the IP in the TCP / IP environment, basically used to provide underlying services to the transport layer. Therefore, CLNP is also known as ISO-IP. Another OSI protocol in the network layer is to connect to the network protocol CONP, mainly responsible for providing a network level to the connection service.
CLNP can be used between network entities of the terminal system or in the Network Tile Systems. CLNP mainly provides connectionless network services. The design goal of CLNP is to act as subnet independent centralized protocol SNICP, and implement the operation of establishing an OSI network service on a defined base service, and supports the unity of interconnected network services in the same properties or different nature settings. Sex. When the subsidy independent centralized protocol and / or subnet access protocol does not provide all or part of the NSAP from one NSAP to another without connection network service, the CLNP can be adjusted. In addition to SNICP, the CLNP can also implement other protocols, and it is also applicable to the environment in other subnet interconnects.
CLNP uses NSAP address and title to identify network devices, where the network service access point address NSAP acts as a source address and target address parameter, a network entity title as a network entity identifier of a terminal system or an intermediate system. The network entity title is assigned to the same name space with the NSAP address. As for the address, the NSAP address is also a network entity title, depending on the approved environment.
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