Quality of Service by Flow Aware

The paper addresses the issue of providing quality of service guarantees in the Internet. After a brief discussion of Internet traac characteristics, we consider the possibility of performing multiplexing with predictable performance for stream and elastic traac using open loop and closed loop control, respectively. Quality of service depends essentially on providing suucient capacity to handle expected demand. We argue that ow awareness is additionally necessary to ensure that traac is directed over routes with available capacity and to avoid congestion collapse in case of overload. Proposed ow aware controls allow simple volume based charging and the development of an economic model similar to that of the telephone network.