Supplying legacy applications with QoS

∗ This work was performed in the framework of IST Project AQUILA (Adaptive Re-source Control of QoS Using an IP-based Layered Architecture IST1999-10077) funded in part by the EU. The author wish to express her gratitude to the other members of the AQUILA Consortium for valuable discussions. Abstract: In this article we consider end-to-end interdomain Quality of Service support for non QoS-aware applications. We present a description of QoS requests resp. offers 1at network level: the so called network service profile, and 2at application resp. end-user level: the so called application profile. These profiles support an end-to-end and interdomain interworking scenario for legacy non and QoS aware applications. The network (composed of more than one domain) is QoS enabled and the different domains offer guaranteed network services. With the proposed mechanisms (combination of converters and description syntax at network and application level) it is possible on the one hand to offer user-friendly QoS, and on the other hand to provide a negotiation and description syntax for QoS.