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Berkeley COMPSCI 268 - Lecture Notes

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CS 268: Graduate Computer Networks – Spring 2004OverviewSlide 3Administrative Trivia’sGoals of this CourseGoals of this Course (cont’d)What Do You Need To Do?Research ProjectResearch Project: StepsPaper ReviewsGradingEnrollment PolicySend the Following InformationSlide 14What is a Communication Network? (End-system Centric View)What is a Communication Network? (Infrastructure Centric View)Types of NetworksSlide 18The Internet (cont’d)History of the InternetTime Line of the InternetGrowth of the InternetWho is Who in the Internet ?Internet Standardization ProcessServices Provided by the InternetSlide 26Slide 27Slide 28Slide 29Slide 30A Taxonomy of Communication NetworksBroadcast vs. Switched Communication NetworksSlide 33Circuit SwitchingTiming in Circuit SwitchingSlide 36Circuit Switching: Multiplexing/DemultiplexingSlide 38Packet SwitchingSlide 40Packet Switching: Multiplexing/DemultiplexingSlide 42Datagram Packet SwitchingTiming of Datagram Packet SwitchingSlide 45Slide 46Virtual-Circuit Packet SwitchingSlide 48Slide 49Slide 50Packet-Switching vs. Circuit-SwitchingSummaryNetwork Components (Examples)1CS 268: Graduate Computer Networks – Spring 2004Instructor:-Ion Stoica ([email protected], 645 Soda Hall)Lecture time: MW, 9:00-11:30 amPlace: 310 Soda HallOffice hour: Tu, 4 - 5 pm2OverviewAdministrative triviaOverview and history of the InternetA Taxonomy of Communication Networks3OverviewAdministrative triviaOverview and history of the InternetA Taxonomy of Communication Networks4Administrative Trivia’sCourse Web page: -http://www.cs.berkeley.edu/~istoica/cs268/04/ (it will move at http://inst.eecs.berkeley.edu/~cs268/sp04)-Check it periodically to get the latest informationDeadlines-Unless otherwise specified, it means 10 minutes before the lecture-Special circumstances should be brought to my attention ahead of deadlines5Goals of this CourseUnderstand -How does the Internet work?-What are the Internet’s design principles? -Where is the Internet heading to?Get familiar with current Internet research effortsUnderstand solutions in context-Goals-Assumptions6Goals of this Course (cont’d)Appreciate what is good research-Problem selection-Solution & research methodology-PresentationApply what you learned in a class project7What Do You Need To Do?A research-oriented class projectTwo examsPaper reading8Research ProjectInvestigate new ideas and solutions in a class research project-Define the problem-Execute the research-Work with your partner -Write up and present your researchIdeally, best projects will become conference papers (e.g., SIGCOMM, INFOCOM, MOBICOM)9Research Project: StepsI’ll distribute a list of projects-You can either choose one of these projects or come up with your ownPick your project, partner, and submit a one page proposal describing:-The problem you are solving -Your plan of attack with milestones and dates-Any special resources you may needA midterm presentation of your progress (five minutes)Poster session Submit project papers10Paper ReviewsGoal: synthesize main ideas and concepts in the papersNumber: around two papers per classLength: no more than half page per paperContent-Main points intended by the author-Points you particularly liked/disliked-Other comments (writing, conclusions…) Submission:-Submit each review via e-mail before the class on lecture day-See class web page for details11GradingThis is a graduate networking class: more important is what you realize/learn than the gradeTerm project 50%Final exam 15%Midterm exam 15%Class participation 10%Paper reviews 10%12Enrollment PolicyGraduate students get highest priorityAmong other students, priority is given to those who -Have backgrounds in networking, operating systems-Have relatively light course loadProcedure of enrollment for undergraduate students-Be officially on the waiting list-Send me an email with URL that has pointers to•Your resume or cv•A short statement of relevant courses (textbook, university, grade) and experiences•Other courses you are taking this semester13Send the Following InformationPlease send me ([email protected] ) an e-mail with the subject “cs268 registration" and the following information: -Last and first name -Student ID -Your department -Preferred email address -URL of your home page Please indicate explicitly if I can add you to the on-line web page that lists each student enrolled in the class (only your name and URL will be made publicly available here).14OverviewAdministrative triviaOverview and history of the InternetA Taxonomy of Communication Networks15What is a Communication Network?(End-system Centric View)Network offers one basic service: move information-Bird, fire, messenger, truck, telegraph, telephone, Internet …-Another example, transportation service: move objects•Horse, train, truck, airplane ...What distinguish different types of networks?-The services they provideWhat distinguish services?-Latency-Bandwidth-Loss rate-Number of end systems-Service interface (how to invoke the service?)-Others•Reliability, unicast vs. multicast, real-time...16What is a Communication Network?(Infrastructure Centric View)Communication medium: electron, photonNetwork components:-Links – carry bits from one place to another (or maybe multiple places): fiber, copper, satellite, …-Interfaces – attache devices to links-Switches/routers – interconnect links: electronic/optic, crossbar/Banyan-Hosts – communication endpoints: workstations, PDAs, cell phones, toastersProtocols – rules governing communication between nodes- TCP/IP, ATM, MPLS, SONET, Ethernet, X.25Applications: Web browser, X Windows, FTP, ...17Types of NetworksGeographical distance-Local Area Networks (LAN): Ethernet, Token ring, FDDI-Metropolitan Area Networks (MAN): DQDB, SMDS-Wide Area Networks (WAN): X.25, ATM, frame relay-Caveat: LAN, MAN, WAN may mean different things•Service, network technology, networksInformation type-Data networks vs. telecommunication networksApplication type-Special purpose networks: airline reservation network, banking network, credit card network, telephony -General purpose network: Internet18Types of NetworksRight to use-Private: enterprise networks-Public: telephony network, InternetOwnership of protocols-Proprietary: SNA-Open: IPTechnologies-Terrestrial vs.


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Berkeley COMPSCI 268 - Lecture Notes

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