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Ch. 2 Protocol Architecture. 2.1 The Need for a Protocol Architecture Same set of layered functions need to exist in the two communicating systems. Key.

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Presentation on theme: "Ch. 2 Protocol Architecture. 2.1 The Need for a Protocol Architecture Same set of layered functions need to exist in the two communicating systems. Key."— Presentation transcript:

1 Ch. 2 Protocol Architecture

2 2.1 The Need for a Protocol Architecture Same set of layered functions need to exist in the two communicating systems. Key Features of a Protocol –Syntax--Concerns the format of the data blocks. –Semantics--Includes control information for coordination and error handling. –Timing--Includes speed matching and sequencing.

3 2.2 A Simple Protocol Architecture Three-Layer Model (Fig ) –Application (eg., File Transfer) –Transport (Communications Service Module) –Network Access

4 2.3 The TCP/IP Protocol Architecture The TCP/IP Protocol Architecture (Fig. 2.3) –Application –Transport (Host-to-Host) –Internet –Network Access –Physical

5 2.3 (cont.) Fig. 2.4 TSCP/IP Concepts Fig. 2.5 Protocol Data Units for TCP/IP Fig. 2.6 TCP and UDP Headers Fig. 2.7 IP Headers Fig. 2.8 TCP/IP Protocol Suite


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