Shaping of Data Networks


Building on the conclusions from Chapter 1 about emergence of data network as the most dominant network, this chapter describes how data networks took shape. The factors that influenced this shaping the most are the OSI seven layer model, fiber optics, and the ISP-centric architecture blueprint from National Science Foundation (NSF) that later morphed into a geography-centric LAN, MAN, RAN, and WAN based architecture. These are covered in this chapter.

This chapter also describes the convergence in backhaul by the emergence of Ethernet as the most popular protocol first at layer 2 and subsequently at layer 1 as well, Internet Protocol at layer 3, and Transmission Control Protocol at layer 4 of the OSI seven layer ...

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