Introduction : Introduction Chapter 1
Uses of Computer Networks : Uses of Computer Networks Business Applications
Home Applications
Mobile Users
Social Issues
Business Applications of Networks : Business Applications of Networks A network with two clients and one server.
Business Applications of Networks (2) : Business Applications of Networks (2) The client-server model involves requests and replies.
Home Network Applications : Home Network Applications Access to remote information
Person-to-person communication
Interactive entertainment
Electronic commerce
Home Network Applications (2) : Home Network Applications (2) In peer-to-peer system there are no fixed clients and servers.
Home Network Applications (3) : Home Network Applications (3) Some forms of e-commerce.
Mobile Network Users : Mobile Network Users Combinations of wireless networks and mobile computing.
Network Hardware : Network Hardware Local Area Networks
Metropolitan Area Networks
Wide Area Networks
Wireless Networks
Home Networks
Internetworks
Broadcast Networks : Broadcast Networks Types of transmission technology
Broadcast links
Point-to-point links
Broadcast Networks (2) : Broadcast Networks (2) Classification of interconnected processors by scale.
Local Area Networks : Local Area Networks Two broadcast networks
(a) Bus
(b) Ring
Metropolitan Area Networks : Metropolitan Area Networks A metropolitan area network based on cable TV.
Wide Area Networks : Wide Area Networks Relation between hosts on LANs and the subnet.
Wide Area Networks (2) : Wide Area Networks (2) A stream of packets from sender to receiver.
Wireless Networks : Wireless Networks Categories of wireless networks:
System interconnection
Wireless LANs
Wireless WANs
Wireless Networks (2) : Wireless Networks (2) (a) Bluetooth configuration
(b) Wireless LAN
Wireless Networks (3) : Wireless Networks (3) (a) Individual mobile computers
(b) A flying LAN
Home Network Categories : Home Network Categories Computers (desktop PC, PDA, shared peripherals
Entertainment (TV, DVD, VCR, camera, stereo, MP3)
Telecomm (telephone, cell phone, intercom, fax)
Appliances (microwave, fridge, clock, furnace, airco)
Telemetry (utility meter, burglar alarm, babycam).
Network Software : Network Software Protocol Hierarchies
Design Issues for the Layers
Connection-Oriented and Connectionless Services
Service Primitives
The Relationship of Services to Protocols
Network SoftwareProtocol Hierarchies : Network SoftwareProtocol Hierarchies Layers, protocols, and interfaces.
Protocol Hierarchies (2) : Protocol Hierarchies (2) The philosopher-translator-secretary architecture.
Protocol Hierarchies (3) : Protocol Hierarchies (3) Example information flow supporting virtual communication in layer 5.
Design Issues for the Layers : Design Issues for the Layers Addressing
Error Control
Flow Control
Multiplexing
Routing
Connection-Oriented and Connectionless Services : Connection-Oriented and Connectionless Services Six different types of service.
Service Primitives : Service Primitives Five service primitives for implementing a simple connection-oriented service.
Service Primitives (2) : Service Primitives (2) Packets sent in a simple client-server interaction on a connection-oriented network.
Services to Protocols Relationship : Services to Protocols Relationship The relationship between a service and a protocol.
Reference Models : 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
Reference Models : Reference Models The OSI reference model.
Reference Models (2) : Reference Models (2) The TCP/IP reference model.
Reference Models (3) : Reference Models (3) Protocols and networks in the TCP/IP model initially.
Comparing OSI and TCP/IP Models : Comparing OSI and TCP/IP Models Concepts central to the OSI model
Services
Interfaces
Protocols
A Critique of the OSI Model and Protocols : A Critique of the OSI Model and Protocols Why OSI did not take over the world
Bad timing
Bad technology
Bad implementations
Bad politics
Bad Timing : Bad Timing The apocalypse of the two elephants.
A Critique of the TCP/IP Reference Model : A Critique of the TCP/IP Reference Model Problems:
Service, interface, and protocol not distinguished
Not a general model
Host-to-network “layer” not really a layer
No mention of physical and data link layers
Minor protocols deeply entrenched, hard to replace
Hybrid Model : Hybrid Model The hybrid reference model to be used in this book.
Example Networks : Example Networks The Internet
Connection-Oriented Networks: X.25, Frame Relay, and ATM
Ethernet
Wireless LANs: 802:11
The ARPANET : The ARPANET (a) Structure of the telephone system.
(b) Baran’s proposed distributed switching system.
The ARPANET (2) : The ARPANET (2) The original ARPANET design.
The ARPANET (3) : The ARPANET (3) Growth of the ARPANET (a) December 1969. (b) July 1970.
(c) March 1971. (d) April 1972. (e) September 1972.
NSFNET : NSFNET The NSFNET backbone in 1988.
Internet Usage : Internet Usage Traditional applications (1970 – 1990)
E-mail
News
Remote login
File transfer
Architecture of the Internet : Architecture of the Internet Overview of the Internet.
ATM Virtual Circuits : ATM Virtual Circuits A virtual circuit.
ATM Virtual Circuits (2) : ATM Virtual Circuits (2) An ATM cell.
The ATM Reference Model : The ATM Reference Model The ATM reference model.
The ATM Reference Model (2) : The ATM Reference Model (2) The ATM layers and sublayers and their functions.
Ethernet : Ethernet Architecture of the original Ethernet.
Wireless LANs : Wireless LANs (a) Wireless networking with a base station.
(b) Ad hoc networking.
Wireless LANs (2) : Wireless LANs (2) The range of a single radio may not cover the entire system.
Wireless LANs (3) : Wireless LANs (3) A multicell 802.11 network.
Network Standardization : 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 : ITU Main sectors
Radiocommunications
Telecommunications Standardization
Development
Classes of Members
National governments
Sector members
Associate members
Regulatory agencies
IEEE 802 Standards : IEEE 802 Standards The 802 working groups. The important ones are marked with *. The ones marked with are hibernating. The one marked with † gave up.
Metric Units : Metric Units The principal metric prefixes.