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Computer NetworkingBackground

Computer Networking: A Top Down Approach ,4th edition. Jim Kurose, Keith RossAddison-Wesley

Yanmin Zhu

Department of Computer Science and Engineering

Shanghai Jiao Tong University

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Your Instructor

Yanmin Zhu, PhD Wireless sensor networks, vehicular networks,

crowdsensing, mobile computing

Internet of Things

Cloud computing

Contact information Email: yzhu@cs.sjtu.edu.cn

Web: http://www.cs.sjtu.edu.cn/~yzhu/

Mobile: 135-2442-1842

Office: 505, #3, Dianyuan Buildings

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About Me

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BS from Xi’an Jiao Tong University, 2002

PhD from Hong Kong University of Science and Technology, 2007

PostDoc with Imperial College London, 2008

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Let’s start with top 10 inventions of all time

You use it everyday!

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Top 10 Inventions of All Time

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source

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Evolution of the desk（1980-2014）

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Evolution of the desk（1980-2014）

Source: http://www.360doc.com/content/14/0919/20/5052258_410779481.shtml

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Then, word by word“Computer” + “Network”

You use it everyday!

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What is a Computer?

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What is a Network?

A group or system of interconnected people or things

Examples: Road network

Social network

Computer network

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What is a Computer Network?

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A computer network is a telecommunications network which allows computers to exchange data.

Data is transferred in the form of packets.

The connections between nodes are established using either cable media or wireless media.

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The Most Largest Computer Network: The Internet

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The Most Largest Computer Network: The Internet

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Home network

Institutional network

Mobile network

Global ISP

Regional ISP

router

PC

server

wirelesslaptop

cellular handheld

wiredlinks

access points

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Visualization of Routing Path

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visualization of routing

paths through a portion of the

Internet

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One example backbone network of the Internet: CERNET

You use it everyday!

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CERNET

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Bandwidth for Cross-country Connections

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Connections to Domestic Networks

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CERNET2

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Topology of CERTNET2

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Connection to Other Networks

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CERNET-Shanghai

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Topology

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CERNET in SJTU

The backbone node of CERNET, the backbone node of SHERNET

The first University which owns the campus backbone with a bandwidth of 10Gbps WDM Technology adopted

SJTUnet connects five campus distributed in Shanghai. The total fiber length in campus is up to 57 km.

The total fiber length for inter-campus connection is up to 70 km.

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Connecting Five Campuses

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Network Structure

Xuhui

Minhang

Fahua

Shangzhong

Qibao

Alpine 3804

BD6808

BD6808 BD6808

BD6808BD6808

Alpine 3804IPv4

IPv6/IPv4

Edge switch

BD6808

BD6808

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Real-time Monitoring

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Traffic Load in Minhang Campus

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Campus WiFi Connectivity

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Besides CERNET, what about other backbone networks in China?

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Four Major Backbone Networks

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Today’s Internet in China

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Statistics of Resources in China

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Population that Uses Internet

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Access Devices

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More Smartphones for accessing Internet

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Major Internet Applications

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Use of Internet in Enterprises

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Besides Internet (computer networks), what about other network?

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Supercomputer

A supercomputer is comprised of Many computing

nodes

An interconnection network

Computing nodes are connected by the interconnection

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Google Data Center

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Sensor Node

Three capabilities Information

sensing Data

processing Packet

transmission

Resource constrained

Processor

Power Supply Unit

Sensing

Interface

Accelerator

Temperature

Light

Humidity

Radio

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Wireless Sensor Networks

A network of tiny sensor nodes closely coupled with the physical world

Internet

Gateway

Sensor Node

Users

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Deployment in coal mine tunnels

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WSN Prototype

Energy Efficiency

Reliable RoutingMulti-Sink DeploymentGeocasting

Data AggregationCompression Event Detection

Location Sensing ID Assignment

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Internet of Things

The Internet of Things (IoT) is the network of physical objects or "things" embedded with electronics, software, sensors and connectivity to enable it to achieve greater value and service by exchanging data with the manufacturer, operator and/or other connected devices.

Each thing is uniquely identifiable through its embedded computing system but is able to interoperate within the existing Internet infrastructure.

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Technology Roadmap for IoT

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Lots of examples and background for computer networks

What is the course (Computer Networking)

about?

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What is Computer Networking?

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What is needed in between?

Applications

Networking

“Computers”or computing

devices

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What the course offers?

Concepts and principles of computer networks in the broadest sense

A comprehensive, self-contained tour through all of networking from Application Layer Transport Layer Network Layer Link Layer

Other important topics Wireless and mobile networks Multimedia networking Network security

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Course Info

Course title: computer networking

Your Lecturer: Yanmin Zhu

Credits: 3

Hours: 48 (1st-12th week)

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Textbook and reference books

Textbook Computer Networking: A Top-Down

Approach Featuring the Internet (4rd Ed.),by James F. Kurose, Keith W. Ross

Reference books Computer Networks (4th Ed.), by Andrew S.

Tanenbaum, Prentice Hall

Data and Computer Communications (6th Ed.), William Stallings, Pearson Education.

Computer Networks: A Systems Approach. Larry S. Peterson, Bruce Davie. The Morgan Kaufmann Series in Networking.

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Prerequisite Courses

There are actually no prerequisite courses for this courses.

However, the following programming courses would certainly be a plus. - Programming with C++ or Java (socket

programming)

- Operating System (thread concept)

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Online resources

Course website: http://www.cs.sjtu.

edu.cn/~yzhu/

Textbook website: http://www.aw-

bc.com/kurose_ross/

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Grading Scheme

Final exam ( 50%)

Term project (15%)

Attendance and Homework (15%)

In-class Quiz (20%)

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Discussions

Each student talks what amazes, confuses, or interests you in computer networking.

Share that with your fellow students.

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