Linux® Socket Programming

Chapter 5. Understanding the Network Layering Model

IN THIS CHAPTER

• Solving the Network Challenge

• Open Systems Interconnection (OSI) Network Model

• Internet Protocol Suite

• Fundamental Differences Between OSI and IP

• What Services What?

• Summary: From Theory to Application

One of the most delicious European desserts is the torte, a kind of very rich cake. The torte typically has several (five to eight) layers. Each layer rests its weight on the lower layers and has a different flavor and color. The torte has a firm frosting that covers the crest to the platter.

If you look at how the conceptual network subsystem (or protocol stacks) is designed, you find a similar layering. On the surface it shows a common interface with the layers underneath. Each layer ...