Network Sales and Services Handbook (Cisco Press Networking Technology)
The following topics are covered in this chapter:
OSI Layer Characteristics
Host Communication
Data Encapsulation
Chapter 1, "Internetworking Basics," outlined the basic concepts of internetworking. This chapter introduces you to the fundamental concepts of the Open System Interconnection (OSI) Reference Model. If you are familiar with OSI, this chapter should serve as a refresher; if you are not familiar with it, this information should provide a good introduction.