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Chapter 1

Introduction

Services to Protocols Reference Models

•The OSI Reference Model

•The TCP/IP Reference Model

•A Comparison of OSI and TCP/IP

•A Critique of the OSI Model and Protocols

•A Critique of the TCP/IP Reference Model

Example Networks

 

•The Internet

•Connection-Oriented Networks:
     X.25, Frame Relay, and ATM

•Ethernet

•Wireless LANs: 802:11

The ARPANET

a) Structure of the telephone system.

(b) Baran’s proposed distributed switching system.

 Internet Usage
  

Traditional applications (1970 – 1990)

•E-mail

•News

•Remote login

•File transfer

Architecture of the Internet

Overview

of the Internet.

ATM Virtual Circuits

The ATM Reference Model

The ATM Reference Model (2)

Ethernet

Architecture of the original Ethernet

Wireless LANs

(a) Wireless networking with a base station.

(b) Ad hoc networking
Wireless LANs (2)

The range of a single radio may not cover the entire system
Network Standardization

•Who’s Who in the Telecommunications World

•Who’s Who in the International Standards World

•Who’s Who in the Internet Standards World

ITU

 

•Main sectors

•Radiocommunications

•Telecommunications Standardization

•Development

•Classes of Members

•National governments

•Sector members

•Associate members

•Regulatory agencies

IEEE 802 Standards

 

The 802 working groups.  The important ones are marked with *.  The ones marked with â are hibernating.  The one marked with  † gave up.

Metric Units

The principal metric prefixes

The ATM layers and sublayers and their functions.

The ATM reference model.

Growth of the ARPANET  (a) December 1969. 

  (b) July 1970.

(c) March 1971.    (d)  April 1972.    (e) September

1972.