IEEE Network: The Magazine of Global Internetworking
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The IST project AQUILA1 aims to develop a flexible, extendable and scalable Quality of Service architecture for the existing Internet. The core network will be an enhanced DiffServ network providing several dynamically manageable traffic classes with specific QoS parameters, per hop behaviors, and other "guidelines" that realize different network services. A new logical layer has been defined on top of the DiffServ network, the Resource Control Layer. The task of this layer is to control the underlying network in order to provide QoS features to the customers of the network. Resource Control Agent, Admission Control Agent and End-user Application Toolkit (EAT) are the logical components of this architecture. Legacy as well as new QoS-aware applications running on the hosts will use the EAT middleware to benefit from the QoS capabilities of the AQUILA architecture. The AQUILA project is split into two phases. Now it has completed the definition and implementation and it has run the first trial. The architectural definition and the trial results are discussed in this paper.