Architecture of Network Systems

Appendix. The layered Internet architecture and network protocols

The success of the Internet is in large part due to its well-designed network architecture. Internet architecture is based on a layered protocol stack that clearly isolates functionalities in different layers and allows for new protocols to be introduced in one layer without affecting other layers. In Chapter 2, we briefly introduced the International Organization for Standardization/Open Systems Interconnection reference model as one example of a layered protocol stack. For reference, this Appendix briefly reviews the main concepts of protocols used commonly in this layered architecture. Specifically, we focus on the protocols used in today's Internet.

This Appendix only touches ...