Internetworking with TCP/IP Volume One, 6th Edition

4 Protocol Layering

Chapter Contents

1. 4.1 Introduction, 47

2. 4.2 The Need For Multiple Protocols, 47

3. 4.3 The Conceptual Layers Of Protocol Software, 49

4. 4.4 Functionality Of The Layers, 49

5. 4.5 ISO 7-Layer Reference Model, 50

6. 4.6 X.25 And Its Relation To The ISO Model, 51

7. 4.7 The TCP/IP 5-Layer Reference Model, 52

8. 4.8 Locus Of Intelligence, 56

9. 4.9 The Protocol Layering Principle, 57

10. 4.10 The Layering Principle Applied To A Network, 58

11. 4.11 Layering In Mesh Networks, 60

12. 4.12 Two Important Boundaries In The TCP/IP Model, 62

13. 4.13 Cross-Layer Optimizations, 63

14. 4.14 The Basic Idea Behind Multiplexing And Demultiplexing, 64

1. Summary, 66

4.1 Introduction

The previous chapter reviews the architectural foundations of internetworking and describes ...