5. Application examples

This section is devoted to examples of network performance. They are more or less taken from real problems, but simplified to illustrate the analysis method as simply as possible. The aim is first and foremost to show how to model the operation of a network, based on relatively simple traffic models, of course, derived from the needs of applications, and applying the concepts seen in this dossier.

In the real world of engineering, the object of problems is first and foremost to choose a network for a given application, or to determine whether or not a type of network is suited to the problem, which often involves sizing the network under consideration.

The problem is often posed in terms such as the following. We need to instrument an application made up of N stations, each offering a certain load of C messages (or bytes) per time unit....