Engineering a quality of service-enabled network: a case study

This paper presents a case study concerning a network operator that wants to provide services with a certain degree of quality to its customers. Users are presented with a set of services with different quality of service capabilities and the network is engineered in order to satisfy the requests and to maximize provider's revenues. This paper presents the service model adopted and the technical choices that allowed this network to work, taking in mind scalability issues. Finally, it presents the problems that arose when this network was put in place by using both commercial and experimental routers.