EFFECT OF NETWORK POLICIES ON INTERNET TRAFFIC ENGINEERING

An important objective of Int ernet traffic Engineering is to facilitate reliable network operations by providing proper QoS to different services through mechanisms which will enhance network integrity and achieve network survivability. Current Internet architecture is distributed in nature, interconnected by Internet Service Providers (ISPs), where a central goal of each service provider is to enhance emergent properties of their own network by providing better service qualities with strong emphasis on economic considerations. Hence, service providers aim at getting the best result based upon economic considerations and governed by their network wide policies. In this paper we present a scheme in which Autonomous System (AS) relationships are central to any policy decision imposed by individual ISPs. Based on these policy relationships, we propose a framework which is expected to match the need for better QoS, uniform Internet wide service management and contribute efficiently towards traffic engineering. This paper presents an integrated approach to traffic engineering, routing and policy mechanisms for better management of QoS over the Internet.