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Digicom II Digital Communications Part II

Digicom II Digital Communications Part II. Based on book by Keshav “An Engineering Approach to Computer Networking” Jon Crowcroft http://www.cl.cam.ac.uk/~jac22. Any Questions?. …otherwise we can avoid all these 11am meetings . DC-II (=DC-I++) :- Contents.

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Digicom II Digital Communications Part II

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  1. Digicom II Digital Communications Part II Based on book by Keshav “An Engineering Approach to Computer Networking” Jon Crowcroft http://www.cl.cam.ac.uk/~jac22

  2. Any Questions? • …otherwise we can avoid all these 11am meetings

  3. DC-II (=DC-I++) :- Contents • The Telephone Net (well its been around 100 years, so there must be some lessons in it) • The Internet (about 25 years old, and looking decidedly shakey) • Asyncronous Transfer Mode (a failed, but bold attempt to mix Telepone and Internet) • Classic Simplistic Model of Modular Functionality for Communications • Some Systems Design Paradigms, often orthogonal to Layers • Naming and Addressing, i.e. who is where? • A List of common protocols - see if you can spot design patterns? • Some Mapping onto implementation for CS • Routing - How many ways can we get from A to B? • Error Control - what do we do when things go wrong? • Flow Control - stemming the flood

  4. DCII Contents continued… • Shared Media Networks (Ether/Radio etc) - some special problems • Switched Networks - What does a switch do and how? • Integrated Service Packet Networks for IP • APIs to Quality of Service • Scheduling and Queue Management Algorithms for packet forwarding • What about routing with QoS • The Big Picture for manageing traffic • Economics, Policy and a little MPLS

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