Chapter 2

Protocols and the TCP/IP Suite

Introduction

⚫Layered protocol architecture

⚫TCP/IP protocol suite

⚫OSI reference model

⚫Internetworking

The Need for a Protocol Architecture

⚫Procedures to exchange data between devices can be complex

设备之间交换数据的过程可能很复杂

⚫High degree of cooperation required between communicating systems

Example: File transfer

⚫Requires a data path to exist

⚫Tasks:

– Activate data communication path

– Source determines that destination is ready

– File transfer app destination file management app is ready store file for user

– File format conversion