Raj JainThe Ohio State University1CIS 777CIS 777TelecommunicationsTelecommunicationsNetworksNetworksRaj JainThe Ohio State UniversityColumbus, OH [email protected]://www.cis.ohio-state.edu/~jain/cis777/Raj JainThe Ohio State University2q Howq Whatq Whenq WhyOverviewRaj JainThe Ohio State University3q How am I going to grade you?q What are we going to cover?q When are you going to do it?q Why you should not take this course?Raj JainThe Ohio State University4GradingGradingq Quizzes (Best 2 of 3) 50%q Class participation 10%q Homeworks+Labs 40%m The division of grades between homeworks andlabs will depend on the number of labsm Most likely it will be 20% for homeworks and 20%for labs.Raj JainThe Ohio State University5Frequently Asked QuestionsFrequently Asked Questionsq Yes, I do use “curve”. Your grade dependsupon the performance of the rest of the class.q All homeworks are due at the beginning of the nextclass.q All late submissions must be preapproved.q All quizzes are open-book and extremely time limited.q Quizzes consist of numerical as well as multiple-choice (true-false) questions.q There is negative grading on incorrect multiple-choicequestions.q Everyone including the graduating seniors are gradedthe same way.Raj JainThe Ohio State University6Text BookText Bookq W. Stallings, "ISDN and Broadband ISDNwith Frame Relay and ATM," 3rd Ed.,Prentice-Hall, 1995, ISBN 0-02-415513-6,581 pp.Raj JainThe Ohio State University7Supplementary TextsSupplementary Textsq G. Sackett and C. Y. Metz, “ATM andMultiprotocol Networking,” McGraw-Hill,1997.q H. J. R. Dutton and P. Lenhard, "AsynchronousTransfer Mode (ATM): Technical Overview," 2ndEd, Prentice-Hall, 1995, ISBN 0-13-520446-1.q U. Black, "Emerging Communications Technologies,"Prentice-Hall, 1994, ISBN 0-13-051500-0, 428 pp.q W. Stallings, "Data & Computer Communications,"5th Ed, Prentice-Hall, 1996, ISBN 0-02-415425-3.q A. S. Tanenbaum, "Computer Networks", 3rd Ed,Prentice-Hall, 1996, ISBN 0-13-349945-6, 813 pp.Raj JainThe Ohio State University8Prerequisite: CIS677Prerequisite: CIS677q Protocol Layers: ISO/OSI reference modelq Physical Layer: Coding, Manchesterq Transmission Media: UTP, Cat 5, Microwave, Radioq Data Communication: Asynchronous vs synchronous,Baud, bit, and Hz, Half-Duplex vs Full-duplex,Modulation/Demodulationq Packet Transmissions: Framing, Bit stuffing, bytestuffingq Flow Control: On-Off, Windowq Error Detection: Parity, Checksum, Cyclic RedundancyCheckRaj JainThe Ohio State University9Prerequisites (Cont)Prerequisites (Cont)q Error Recovery: Start and Stop,Go back n, Selective Rejectq LANs: Aloha, CSMA/CD, Ethernet,IEEE 802.3, Token Ring/IEEE 802.5, FDDIq LAN Addressing: Unicast vs multicast, Local vs Globalq LAN wiring: 10Base5, 10Base2, 10Base-T, 100Base-T4, 100Base-TX, 100Base-FXq Extended LANs: Hubs, Bridges, Routers, Switchesq Routing: Distance Vector vs Link State, Spanning tree,source routingq Network Layer: Connectionless vs connection orientedRaj JainThe Ohio State University10Schedule (Tentative)Schedule (Tentative)3/31/98 Overview, Networking Trends4/2/98 Basic Concepts: Data Networks4/7/98 Basic Concepts: Telecommunications Networks4/9/98 X.254/14/98 Frame Relay4/16/98 Quiz 14/21/98 Frame Relay Congestion Control4/23/98 ISDN4/28/98 SONETRaj JainThe Ohio State University11Schedule (Cont)Schedule (Cont)4/30/98 Introduction to ATM5/5/98 ATM Traffic Management5/7/98 Quiz 25/12/98 Legacy traffic over ATM 15/14/98 Legacy traffic over ATM 25/19/98 ATM PNNI5/21/98 Mobile Communications Technologies 15/26/98 Mobile Communications Technologies 25/28/98 Quiz 36/2/98 Graduating Seniors’ grades dueRaj JainThe Ohio State University12Office HoursOffice Hoursq Tuesday: 2:00 to 2:30 PMThursday: 2:00 to 2:30 PMq Office: 297 Dreese Lab, 2015 Neil AveRaj JainThe Ohio State University13SummarySummaryq There will be a lot of self-readingq Goal: To prepare you for a career in networkingq Get ready to work hardRaj JainThe Ohio State University14Quiz 0: PrerequisitesQuiz 0: PrerequisitesTrue or False?T Fo o Datalink refers to the 2nd layer in the ISO/OSI reference modelo o Category 5 unshielded twisted pair cable is better than category3 cable.o o Finding path from one node to another in a large network is a transport layer function.o o It is impossible to send 3000 bits/second through a wire which has a bandwidth of1000 Hz.o o Bit stuffing is used so that characters used for framing do not occur in the data part ofthe frame.o o For long delay paths, on-off flow control is better than window flow control.o o Ethernet uses a CSMA/CD access method.o o 10Base2 runs at 2 Mbps.o o The packets sent in a connection-oriented network are called datagrams.o o Spanning tree algorithm is used to find a loop free path in a network.Marks = Correct Answers _____ - Incorrect Answers _____ = ______Raj JainThe Ohio State University15Homework 1Homework 1q From Tanenbaum’s book, review sections1.2, 1.3, 1.4, 2.1, 2.2, 2.3, 3.1, 3.2, 3.3,3.4, 3.6.1q Submit answers to exercises 1.17, 2.3, and 3.3q Due Date: Tuesday, April 7, 1998.Raj JainThe Ohio State University16q Ex 1.17: A system has n layer protocolhierarchy. Applications generatedmessages of length M bytes. At each of the layers, anh-byte header is added. What fraction of the networkbandwidth is filled with headers.q Ex 2.3: Television channels are 6 MHz wide. Howmany bits/sec can be sent if four-level digital signalsare used. Assume a noiseless channel.q Ex 3.3: If the bit string 011101111101111110 is bitstuffed, what is the output string (on wire).Raj JainThe Ohio State University17Homework 2Homework 2q From Tanenbaum’s book, review sections4.3, 4.4, 4.5, 5.2, 5.5.1, 5.5.2, 5.5.3, 6.4q Submit answers to exercises 4.22, 5.28, 6.15q Due Date: Thursday, April 9, 1998Raj JainThe Ohio State University18q Ex 4.22: Sketch the Manchester encodingfor the bit stream: 0001110101q Ex 5.28: A class B network on the Internet has asubnet mask of 255.255.240.0. What is the maximumnumber of hosts per subnet.q Ex 6.15: The maximum payload of a TCP segment is65,515 bytes. Why was such a strange