QoS Differentiation Provisioning & Management System Exploiting Mobile Agent Technology

The DiffServ architecture provides a scalable mechanism for QoS introduction in a TCP/IP network. DiffServ model is based on the aggregation of traffic flows at an ingress (or egress) point of a network and the IP packet marking for different priority flows, according to several classification criteria. Two approaches exist in the DiffServ architecture: the absolute and the relative. In absolute DiffServ, an admission control scheme is used to provide QoS guarantees as absolute bounds of specific QoS parameters. The relative DiffServ model provides QoS guarantees per service class expressed with reference to guarantees given to other classes defined. Our study presents a QoS absolute and relative differentiation provisioning & management system aiming to provide QoS differentiation (absolute and relative) in IP DiffServ based Networks. The proposed system has been applied and performed well on a real network testbed