Class-based QoS control scheme by flow management in the Internet router

With the Internet transforming into multimedia and high-speed, the various traffic requiring different qualities of service (QoS) will co-exist in the network. Also, classified service based on Diff-Serv (differentiated service), MPLS (Multi Protocol Label Switching) and so on, have come into wide use. In today's environment of the Internet, it is necessary for the routers to perform the control mechanism to guarantee various QoS. We propose the buffer management scheme of the Internet router with class-based priority control, focusing on per-flow queueing, and evaluate the performance. We aim at the realization of differentiated services and the dissolution of the buffer occupation by specific flow.