A new method to implement AFij at core routers in diffserv networks

The most complicated part in DiffServ implementation belongs to AF BHP. Indeed, the complication of AF comes not only from its architecture, but also from its goals. This paper will propose a method to implement AFij of AF BHP at core routers in DiffServ networks. Using this method, we can make AF subclasses (AFij ) easily. Moreover, the performance of the system will be better since the mechanism has congestion control ability and fair sharing between subclasses in an AF class.