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
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.
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 networkingWireless LANs (2)
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
