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Introduction and Overview

Explore the foundations of TCP/IP, the global Internet base technology that has seamlessly handled rapid growth and evolving applications. Learn about the principles, design, and architecture underlying TCP/IP and its adaptation to new network technologies.

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Introduction and Overview

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  1. Introduction and Overview Chapter 1

  2. Why Study TCP/IP? • Forms global Internet base technology • Has accommodated explosive growth well • Protocols work over high-speed networks • Basic design has handled new applications • Protocol suite has been adapted to new network technologies • Principles of architecture, addressing, routing, etc. are similar in all protocol suites

  3. What Is TCP/IP? • Official name: TCP/IP Internet Protocol Suite • Transmission Control Protocol • Standard transport level protocol • Connection (stream of data) oriented • Data travels in TCP segments • Internet Protocol • Connectionless (packet) oriented • Puts TCP segments into IP datagrams

  4. Need for Multiple Protocols • Protocols are standards • Provide syntax and semantics for communication • Protocols  Computer communication Programming languages  Computation • Computation: not deal with CPU instruction set • Communication: not deal with vendor’s hardware • Hides low-level details of communication • Programmers not know specific hardware • Not change programs when hardware changes • Applications work between arbitrary computers

  5. TCP/IP and OSI

  6. No official TCP/IP protocol architecture • Has 5 relatively independent layers of communications tasks • Standards have been developed for each layer • IP used at internet layer • TCP used at transport layer • OSI model was developed to become the international standardized architecture • Did not happen • Key TCP/IP protocols were already mature • OSI model is more complex

  7. Organization of the Text • Intro and overview of underlying technologies (chap 1-2) • TCP/IP from the viewpoint of a single host (chap 3-12) • Internet architecture as viewed globally (chap 13-19, 31) • Application level services (chap 20-30)

  8. Read Chapter 1 • What is internetworking? • What are protocols? Why are they important? • What is interoperability? • What are the two broad types of protocol services? • What services are provided in each type? • What are the TCP/IP distinguishing features? • History of the Internet • Requests for Comments (RFCs)

  9. Future Growth TCP/IP and Internet continue to evolve Most significant is additional traffic Email to scientific files to WWW users All IPv4 IP addresses have been distributed as of 3 Feb 2011!! http://articles.cnn.com/2011-02-03/tech/internet.addresses.gone_1_addresses-internet-numbers-new-pool?_s=PM:TECH

  10. Future Growth (contd) • Growth of the connected Internet

  11. Miscellaneous Internet “Facts” ** Went over 1 billion in 2005 http://www.global-reach.biz/globstats/index.php3 <broken link>

  12. The Global Index is the overall average of the response rating from all servers queried in the Internet Traffic report. Higher Index means faster Internet. (http://www.internettrafficreport.com/main.htm)

  13. Internet Traffic Report: • http://www.internettrafficreport.com/main.htm • Internet Health Report: • http://www.internetpulse.net/

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