With the ever increasing growth of services and the corresponding demand for Quality of Service requirements that are placed on IP-based networks, the essential aspects of network planning will be critical in the coming years. A wide number of problems must be faced in order for the next generation of IP networks to meet their expected performance. With Performance Evaluation and Planning Methods for the Next Generation Internet, the editors have prepared a volume that outlines and illustrates these developing trends. A number of the problems examined and analyzed in the book are: -The design of IP networks and guaranteed performance -Performances of virtual private networks -Network design and reliability -The issues of pricing, routing and the management of QoS -Design problems arising from wireless networks -Controlling network congestion -New applications spawned from Internet use -Several new models are introduced that will lead to better Internet performance These are a few of the problem areas addressed in the book and only a selective example of some of the coming key areas in networks requiring performance evaluation and network planning.