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TUTORIAL VI
QoS Support in Internet and Web Servers
Prasant Mohapatra
University of California, Davis

Audience: This tutorial is aimed at both researchers and practitioners. It will also immensely help students pursuing research in Internet and other networking issues.

Course Description: The current best-effort service model of the Internet and its servers are not suitable for growing applications such as continuous media, e-commerce, and other business services. To provide better services to these expanding classes of applications, it is necessary for the Internet infrastructure to provide QoS support. This tutorial targets QoS issues at both the network level as well as server level. The key techniques proposed for supporting QoS in the Internet include integrated services (IntServ), differentiated services (DiffServ), multiprotocol label switching (MPLS), and traffic engineering. We will discuss various issues involved in these techniques. To provide end-to-end QoS, Internet servers must also be capable of providing differentiated services. Resource management is the key issue in providing efficient service differentiation at the server level. Thus, we will analyze scheduling, admission control, and other implementation details. In this tutorial, we will present the state-of-the- art issues on the proposed topic as well as introduce new and novel avenues for research and development. Future work on important issues like receiver-based DiffServ, multicast-ing, managing dynamic content on the web, and overload control will also be discussed.

Lecturer: Prasant Mohapatra received his Ph. D. in computer engineering from the Pennsylvania State University in 1993. He was with Iowa State University from 1993 to 1999. From 1999 to 2001, he was with the Dept. of Computer Science and Engg. at Michigan State University. From the Fall of 2001, he has been with the Dept. of Computer Science at the University of California, Davis. His research interests include computer networks, server and storage systems, and ad hoc net-works. Dr. Mohapatra is a senior member of the IEEE and a member of the ACM. He is currently on the editorial board of the IEEE Transactions on Computers.