Handout

CS470 Network Engineering and Management
Instructor: Dr. Howard Liu [e-mail]

Introduction

1-1

Chapter 1 Introduction

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We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: q If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we d like people to use our book!) q If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Thanks and enjoy! JFK/KWR All material copyright 1996-2009 J.F Kurose and K.W. Ross, All Rights Reserved

Computer Networking: A Top Down Approach , 5th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009.

Introduction

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Chapter 1: Introduction
Our goal: q get feel and

Overview: q what s the Internet? q what s a protocol? q network edge; hosts, access

terminology q more depth, detail later in course q approach: v use Internet as example

net, physical media q network core: packet/circuit switching, Internet structure q performance: loss, delay, throughput q security q protocol layers, service models q history
Introduction 1-3

Chapter 1: roadmap
1.1 What is the Internet? 1.2 Network edge q end systems, access networks, links

1.3 Network core

q circuit switching, packet switching, network structure

1.4 Delay, loss and throughput in packet-switched networks 1.5 Protocol layers, service models 1.6 Networks under attack: security 1.7 History
Introduction 1-4

What s the Internet: nuts and bolts view
PC server wireless laptop cellular handheld

q millions of