AN ACTIVE NETWORK BASED APPROACH FOR IMPLEMENTATION DIFFERENTIATED SERVICES

Abstract

A lot of research is being carried out now a days towards an efficient and flexible implementation of different type of services to provide different quality of services as per requirements of the customer. This type of architecture, in which the routing and forwarding functionality accommodates different types of services, is called Differentiated Services architecture. The concept of Active networks is also attracting a lot of attention, as a new approach to network architecture. Active networks are more flexible as they incorporate intelligent routers, which can be programmed by the received packets. All routers in an active network are active and can perform packet marking and remarking functions, unlike in existing networks where only edge routers can do so. In this dissertation, we have proposed a scheme to implement differentiated services over active networks. We show that this scheme gives a better implementation of differentiated services, as compared with existing networks, in terms of bandwidth utilization. The comparison is done by simulating a network and then studying the throughput of different traffic flows at each active node. The model is developed in JAVA 2 and tested in Win 98 environment..