2 Introduction to QOS Mechanics and Architectures
2.1 What is Quality of Service?
In networking, the term quality of service (QOS) can mean many different things to different people, hence it is key that we start this chapter by defining what “QOS” means in the context of this book.
Firstly, how do we define a “service” in the context of IP networking? We consider that a service is a description of the overall treatment of a customer’s traffic across a particular domain. A service is only practically useful if it meets the requirements of the end-user applications it is intended to support. Hence, the aim of the service is to maximize end-user satisfaction with the applications that the service is supporting. Maximizing user satisfaction requires ...
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