Kazi Fall 2007 CSCI 3701 CSCI-370/EENG-480 Computer Networks Khurram Kazi

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  • Kazi Fall 2007 CSCI 3701 CSCI-370/EENG-480 Computer Networks Khurram Kazi
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  • Kazi Fall 2007 CSCI 3702 Major sources of the slides for this lecture Slides from Tanenbaums and William Stallings website are used in this lecture
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  • Kazi Fall 2007 CSCI 3703 Course Outline This course provides an introduction to the fundamentals and the applications of data communications networks. Network architectures, topology, protocols, network services and models will be discussed. Some of the protocols the course will cover are: Synchronous Optical Networks (SONET) (Wide Area Network) Optical Transport Hierarchy (OTH) (Wide Area Network) Ethernet (10/100, Gigabit Ethernet) (LAN, Metro and Wide Area Networks) MultiProtocol Label Switching (MPLS) (Layer 2.5) Protocols based on Internet Protocol (IP) (Layer 3 and above) Switching and routing architectures will be presented (Hardware/Software implementation architectures) Time permitting we will cover some aspects of Cellular Networking and Next Generation Network Architecture (NGN) Services provided by various networks Network Security OPNET (a premier network simulator) will be used in simulating various aspects of networking concepts.
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  • Kazi Fall 2007 CSCI 3704 Grading Policy Assignments, short quizzes and presentations on assigned papers (during the course of the semester) 30% 1 Midterm Test 30% Final Project 40% Final Projects will be in any topic of interest within the Data Networking field There will be an Oral presentation of the project along with a written report NYITs Academic Integrity policy will be strictly enforced. Any student found to be cheating (in the assignments, quizzes, Midterm etc.) will get a straight F
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  • Kazi Fall 2007 CSCI 3705 Dos and Donts for the Final Project DO NOT use any report / design from the net. I will know if you did!! Properly referenced work that is not plagiarized is acceptable Most of it should be your work!! Select the topic that interests you. Be creative in it! Designing some aspect in software or hardware will be highly encouraged as opposed to doing an overview/report on some networking technology By mid semester have a good idea of your project Team of 2 students working on the same project is allowed. Each team members task within the project should be explicitly defined.
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  • Kazi Fall 2007 CSCI 3706 Intended Results at the Culmination of the Course You should have a good understanding of networking technologies Should be able to architecturally design various components of the diverse networks Design of a router/switching Network Element Line Cards Switch Fabrics Protocol Handling Ability to figure out which aspect is implemented in hardware and what is designed in the software
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  • Kazi Fall 2007 CSCI 3707 Books Required Textbooks: Computer Networks, Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003, ISBN 0-13-066102-3 Recommended Textbooks: 1) The Internet and Its Protocols; A Comparative Approach, Adrian Farrel, Morgan Kaufmann Publishers, 2004, ISBN 1-55860-913-X 2) Internetworking with TCP/IP Principles, Protocols, and Architectures, Douglas Comer, 4th Edition, Volume 1, Prentice Hall, 2000, ISBN 0-13-018380-6 3) Optical Networking Standards: A Comprehensive Guide for Professionals, edited by Khurram Kazi, Springer, 2006, ISBN 0-387-24062-4
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  • Kazi Fall 2007 CSCI 3708 Useful websites Tanenbaums website at Prentice Hall http://authors.phptr.com/tanenbaumcn4/ http://authors.phptr.com/tanenbaumcn4/ William Stallings (Another good text book on data and computer networks) Website http://www.williamstallings.com/DCC/DCC8e.html http://www.williamstallings.com/DCC/DCC8e.html Standards Organizations and Industry Forums Internet Engineering Task Force http://www.ietf.org/ http://www.ietf.org/ MetroEthernet Forum http://metroethernetforum.org/page_loader.php?p_id=84&index=1 http://metroethernetforum.org/page_loader.php?p_id=84&index=1 International Telecommunication Union (ITU): The leading United Nations agency for information and communication technologies http://www.itu.int/net/home/index.aspx http://www.itu.int/net/home/index.aspx IEEE (Institute of Electrical and Electronics Engineers) LAN/MAN Standards Committee http://www.ieee802.org/ http://www.ieee802.org/ OPNET (Network simulator that we will be using) www.opnet.com
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  • Kazi Fall 2007 CSCI 3709 ITU Main sectors Radiocommunications Telecommunications Standardization Development Classes of Members National governments Sector members Associate members Regulatory agencies
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  • Kazi Fall 2007 CSCI 37010 IETF The Internet Engineering Task Force (IETF) is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet. It is open to any interested individual. The IETF Mission Statement is documented in RFC 3935.(IETF)RFC 3935
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  • Kazi Fall 2007 CSCI 37011 IEEE 802 Standards The 802 working groups. The important ones are marked with *. The ones marked with are hibernating. The one marked with gave up.
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  • Kazi Fall 2007 CSCI 37012 Implication of the Designs we work on; keep few things in mind! During the design process we always make trade-offs Trade-offs can be based on time to market, cost implications, complexity, environmental considerations etc. Ethics: Keep in mind the implications of what you are designing, how it impacts the society!! Privacy vs. Security is a big issue in networking Network designs inherently deal with Implementing of standardized solutions based on regional or global standards developed by industry forums or international standards organizations Power consumption considerations: Making the Designs Green; Environmental friendly!! Cost/performance trade-offs
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  • Kazi Fall 2007 CSCI 37013 Uses of Computer Networks Business Applications Home Applications Mobile Users Social Issues
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  • Kazi Fall 2007 CSCI 37014 Business Applications of Networks
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  • Kazi Fall 2007 CSCI 37015 Business Applications of Networks (2) The client-server model involves requests and replies.
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  • Kazi Fall 2007 CSCI 37016 Home Network Applications Access to remote information Person-to-person communication Interactive entertainment Electronic commerce
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  • Kazi Fall 2007 CSCI 37017 Home Network Applications (2) In peer-to-peer system there are no fixed clients and servers.
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  • Kazi Fall 2007 CSCI 37018 Home Network Applications (3) Some forms of e-commerce.
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  • Kazi Fall 2007 CSCI 37019 Types of Network Metropolitan Area Networks Local Area Networks Wide Area Networks Cellular Networks Wireless Networks (could be Broadband Networks or LANs) Home Networks Internetworks
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  • Kazi Fall 2007 CSCI 37020 Network classification based on distances Classification of interconnected processors by scale.
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  • Kazi Fall 2007 CSCI 37021 Fuzzy Networking Demarcation Points
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  • Kazi Fall 2007 CSCI 37022 A Communications Model
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  • Kazi Fall 2007 CSCI 37023 Communications Tasks Transmission system utilizationAddressing InterfacingRouting Signal generationRecovery SynchronizationMessage formatting Exchange managementSecurity Error detection and correctionNetwork management Flow control
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  • Kazi Fall 2007 CSCI 37024 Data Communications Model
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  • Kazi Fall 2007 CSCI 37025 Transmission Medium Selection is a basic choice internal use entirely up to business long-distance links made by carrier Rapid technology advances change mix fiber optic Copper Cable (still alive and widely used) Wireless (microwaves, satellite, light waves, cellular etc.) Transmission costs still high (but decreasing as time progresses) Hence interest in efficiency improvements (never ending so to speak!)
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  • Kazi Fall 2007 CSCI 37026 Some of the Drivers for Innovative Networking Technologies Growth of number & power of computers is driving need for interconnection also seeing rapid integration of voice, data, image & video technologies Voice over IP IPTV Traditional net connectivity for data transmissions
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  • Kazi Fall 2007 CSCI 37027 Types of Networks: Wide Area Networks Span a large geographical area Cross public rights of way Rely in part on common carrier circuits Technologies used include: circuit switching packet switching (IP or MPLS based) Ethernet based transport Legacy Technologies frame relay Asynchronous Transfer Mode (ATM)
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  • Kazi Fall 2007 CSCI 37028 Types of Networks: Wide Area Network
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  • Kazi Fall 2007 CSCI 37029 Relation between hosts on LANs and the subnet. Types of Networks: Wide Area Network
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  • Kazi Fall 2007 CSCI 37030 Types of Networks: Wide Area Network A stream of packets from sender to receiver.
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  • Kazi Fall 2007 CSCI 37031 Circuit Switching Uses