Design of IP Virtual Private Networks under End-To-End QoS Constraints

Abstract

Traditional approaches to optimal design and planning of packet networks focus on the network-layer infrastructure. The next generation Internet will be faced with problems concerning end-to-end Quality of Service and Service Level Agreement guarantees. In this chapter, we propose a new packet network design and planning approach, for Virtual Private Networks, that is based on user-layer QoS parameters. Our proposed approach maps the end-user performance constrains into transport-layer performance constraints first, and then into network-layer performance constraints. The latter are then considered together with a realistic representation of traffic patterns at the network layer to design the IP network. Examples of application of the proposed design methodology to different networking configurations show the effectiveness of our approach.