Chapter 2

IP Protocol Architecture

2.1 Introduction

If there was an award for technical design excellence, it should certainly be given to Vint Cerf and Robert Kahn, the original designers of TCP/IP. The TCP/IP architecture, designed about 30 years ago, is now used on billions of devices around the world ranging from portable devices and laptop to super computers. The IP protocol suite has been enhanced to support multicast, Quality of Service (QoS), traffic engineering, and real-time services with the architecture fully preserved. This chapter discusses the original design goals and why this architecture must be preserved.

2.2 From NCP to TCP/IP

Who has not heard of the ARPANET that gave birth to the Internet Protocol? ARPANET was a project funded ...

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