W imieniu dr inż. Andrzeja Hildebrandta zapraszam na seminarium:
Multi-Layer Network Design Considering Realistic Traffic Behaviour.
Referat wygłosi: Professor Moshe Zukerman, IEEE Fellow.
MOSHE ZUKERMAN received his Ph.D. from the University of California, Los Angeles, in 1985. In 1986–1997 he was with the Telstra Research Laboratories and during 1997–2008 with The University of Melbourne, Australia. Since 2008 he has been with City University of Hong Kong. He has served on various journal editorial boards and conference technical program committees. His research interests include: performance analysis of telecommunications networks, network design, and traffic engineering.
With the tremendous growth and complexity of the Internet, it is becoming increasingly difficult to optimize the choices of Internet technologies in different layers and its traffic engineering. Available studies on multi-layer network optimizations have mainly focused on cases where the traffic demands between sources and their destinations are fixed. However, such demands in practice are, in fact, variable and exhibit long range dependence characteristics. This presentation describes a new approach for multilayered network design that considers variable long range dependent traffic. In particular, we assume that each traffic stream between its source and destinations follows a Poisson Pareto burst process (PPBP), and we optimize the routing and choice of technology of the different streams to minimize overall network cost, while meeting grade of service requirements. The non-linear nature of our optimization implies that an optimal solution, which is scalable to realistic size networks, is not attainable. Therefore, we use a heuristics based on shortest path in each layer and fixed-point iterations which even for large networks achieves near optimal solutions in few minutes. We demonstrate significant cost benefit over a previously proposed multi-layer optimization that does not consider traffic variability. To manage the large amount of data associated with realistic size networks, we use the Network Markup Language (Netml) which also provides a user interface. Finally, we show a video that demonstrates the user interface and the optimization.
Seminarium odbędzie się 14 lipca o godz. 11.00 w sali 754.