Transcript Introduction - London South Bank University

COMPUTER
NETWORK DESIGN
EEB_7_876
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Website
http://www.lsbu.ac.uk/vle
Methods of Teaching and Learning :
Lecture/Tutorial and Workshop
Assessment of the module :
2-hour written examination -- 50%
2 laboratory reports -- 25% + 25%
Lecturer: Ya Bao
Textbook: Computer Networks 5/E, by
Andrew S. Tanenbaum, Publisher: PrenticeHall, 2011. ISBN: 0-13-255317-1.
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Computer Networks 5th Edition
Andrew Tanenbaum
Benefits of purchasing this book:
•
New problems and lab exercises at the end of
each chapter helps reinforce concepts
presented and pass your exams
•
Based on real-world networks and networking
challenges, enabling you to apply theory to the
types of problems you are most likely to
encounter in industry
•
Companion Website containing PowerPoint
slides and other learning tools
Available from Blackwell’s, London Road
4th edition e-book is available at: (access from LSBU library, Ebook)
http://www.lsbu.ac.uk/library/
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Top-Down Network
Design, 3rd Edition
Priscilla Oppenheimer
Designing and
Supporting Computer
Networks (CCNA)
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BACKGROUND READING
 (essential
for students who lack of
communication background)
Data and Computer
Communications 9/E, by W.
Stalling, Publisher: PrenticeHall, 2010.
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Another book recommended for
who lacks of backgrounds.
 Data
Communications
and Networking 4/E, by
B. Forouzan, Publisher:
McGraw-Hill, 2006.
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Chapter 1
Introduction
SIMPLIFIED COMMUNICATIONS MODEL DIAGRAM
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COMMUNICATIONS TASKS
Transmission system
utilization
Addressing
Interfacing
Routing
Signal generation
Recovery
Synchronization
Message formatting
Exchange management
Security
Error detection and
correction
Network management
Flow control
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NETWORKING
•Point to point communication not usually practical
—Devices are too far apart
—Large set of devices would need impractical number of
connections
•Solution is a communications network
—Wide Area Network (WAN)
—Local Area Network (LAN)
•Business
Applications
•Home Applications
•Mobile Users
•Social Issues
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CLASSIFICATION
OF INTERCONNECTED
PROCESSORS BY SCALE
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 Classification
of interconnected processors by scale.
Protocols
Used for communications between entities in a system
Must speak the same language
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DESIGN ISSUES
•
•
•
•
•
FOR THE
LAYERS
Addressing
Error Control
Flow Control
Multiplexing
Routing
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REFERENCE MODELS
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
The TCP/IP reference model.
HYBRID MODEL

The hybrid reference model to be used in this unit. 14
EXAMPLE NETWORKS
• The
Internet
• Connection-Oriented Networks:
X.25, Frame Relay, and ATM
• Ethernet: 802.3
• Wireless LANs: 802:11
Other networks
PSTN (Public Switched Telephone Network)
GSM, UMTS, LTE and WiMax
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IEEE 802 STANDARDS
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The 802 working groups. The important ones are marked with *. The
ones marked with  are hibernating. The one marked with † gave up.
METRIC UNITS
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 The
principal metric prefixes.