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Computer Networks

Computer Networks. Babu Ram Dawadi Network/System Engineer, CIT, IOE Senior SOI-ASIA Operator, WIDE University Japan. Before coming to this subject…. What are the subjects related to data communication have you studied?? Operating system ??? (must have the knowledge of process/threads)

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Computer Networks

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  1. Computer Networks Babu Ram Dawadi Network/System Engineer, CIT, IOE Senior SOI-ASIA Operator, WIDE University Japan

  2. Before coming to this subject… • What are the subjects related to data communication have you studied?? • Operating system ??? (must have the knowledge of process/threads) • Computer Organization (Data Communication, RS232, printer, simplex/half duplex….) • Computer fundamental (LAN/MAN/WAN….) • Etc…

  3. Syllabus Overview • Background study and Revision(1 hrs) • Introduction to Network Topologies (3 hrs) • Network Architecture(3 hrs) • Reference Model(6 hrs) • Physical layers and its Design issues(5 hrs) • Data Link Layers(6 hrs) • TCP / IP Reference Model(6 hrs) • Network Layer and Internet Layer(6 hrs) • Network Severs and Protocols(3 hrs) • Network Management and Security:(3 hrs) • Introduction to Socket Programming:(3 hrs)

  4. Reference Book • Computer Networks by Andrew S. Tanenbaum. • Data and Computer communications by William Stalling. • Follow other books, if necessary • Internet, google.com & WIKI

  5. Laboratory • At least 3-PC or Virtual Environment with FreeBSD installed (you have to install FreeBSD by yourself) • Cabling/clamping (TIA/EIA standards) • TCP/IP packet analysis • Use your own PC to analyze the packets • Tools: TCPDUMP/WIRESHARK • IPv6 router advertisement/solicitation packets • IPv6/OSPFv3 Phase analysis • CISCO Router configuration ( route, ACL, WildCard setting)

  6. Lab Environment 2001:d30:101:AEF::/64 em0 ::2:1 R-31 em1 ::1:1 2001:d30:AEF:1::/64 em0 ::1:2 em0 ::1:3 R-32 R-33 em1 ::2:2 em1 ::3:3 2001:d30:AEF:2::/64 2001:d30:AEF:3::/64

  7. Computer Network ?

  8. millions of connected computing devices: hosts, end-systems PCs workstations, servers PDAs phones, toasters running network apps communication links fiber, copper, radio, satellite transmission rate = bandwidth/thruput routers: forward packets (chunks of data) router workstation server mobile local ISP regional ISP company network What’s the Network/internet: “nuts and bolts” view

  9. 7-Layers>> all about computer Network • Application • Presentation • Session • Transport • Network • Data Link • Physical OSI REFERENCE MODEL All Peoples Seem To Need Data Processing

  10. Address?? • IP Address (IPv4/IPv6) • MAC Address • ipconfig /all (from DOS), ifconfig interface_name (*nix) • Try command netsh in DOS

  11. Data Communication Review • Simplex Communication • Half Duplex • Full Duplex

  12. Internet Graph

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