Balancing Secondary Traffic Metering for DiffServ Assured Forwarding Classes

Differentiated services (DiffServ) is being accepted as an architecture that specifies a simple, scalable and coarse-gained mechanism for managing network traffic and ensuring quality of services (QoS) guarantees on modern IP networks. In this study, we look into the DiffServ QoS management of assure forwarding per hop behavior (AF PHB) and propose the balancing secondary traffic metering scheme that is able to effectively share the idle bandwidth originally allocated to some AF flow(s) to the other flow(s) that is currently overloading. These excess bandwidths redistribution is to be relatively to the additional bandwidth requirement and the priority of the overloading flow(s).