Correspondence between OSI model and TCP / IP protocol Correspondence between OSI model and TCP / IP protocol
The layers of the most popular TCP / IP protocol in the world today are not divided according to the OSI reference model, but only have a general correspondence with it.
The network layer protocol mainly includes the IP protocol, which realizes the encapsulation and transmission of IP packets, packet routing and avoiding blocking are the key design issues here.
The transport layer defines two end-to-end protocols: Transmission Control Protocol TCP and User Datagram Protocol UDP.
TCP / IP does not involve the session layer and the presentation layer.
The application layer contains all high-level protocols, such as virtual terminal protocol Telnet, file transfer protocol FTP, and e-mail protocol SMTP.
There is also SPX / IPX agreement of NOVELL company for reference.
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