SayPro TCP

TCP/IP is a communication protocol used between physically separated computer systems. TCP/IP can be implemented on a wide variety of physical networks.

TCP/IP is a large family of protocols that is named after its two most important members, Transmission Control Protocol and Internet Protocol. Figure 1 shows the TCP/IP protocols used by CICS® ONC RPC in terms of the layered Open Systems Interconnection (OSI) model. For CICS users, who may be more accustomed to SNA, the left side of Figure 1 shows the SNA layers that correspond very roughly to the OSI layers.

Figure 1. TCP/IP protocols compared to the OSI and SNA models