EL5363 WK1 Lecture Introduction

EL5363 WK1 Lecture Introduction - Click to edit Master...

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Unformatted text preview: Click to edit Master subtitle style 11 Introduction Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 22 Outline n Objective n Architecture n Classification n Circuit switching n Packet switching Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 33 What for n Information: one place & another place n Commun. network: transportation platform n Data network: packets. Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 44 Design requirements n Cost-effective n Easy to manage n Resilient n High-speed n Scalable n .. Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 55 Simple example n Basic requirement: connectivity n The simplest solution: fully-connected net. Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 66 Fully-connected: pro and cons n Pro: High Performance n Cons: Too many links (how many?) Complexity Cost Scalability Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 77 General Architecture n Intermediate nodes: signal relay n End-to-End: multi-hop transportation 7 5 4 6 2 1 3 9 8 10 11 12 13 14 Star Ring Mesh Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 88 Hierarchical Architecture Communication Networks Kang Xi, Polytechnic Institute of NYU Communication Networks Kang Xi, Polytechnic Institute of NYU 99 Classification n Coverage: Wide area network (WAN) Metropolitan area network (MAN) Local area network (LAN) n Switching technology: Circuit switching Packet switching Communication Networks...
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EL5363 WK1 Lecture Introduction - Click to edit Master...

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