Optical networks offer an enormous bandwidth to transmit data. High bit rates make recovery methods essential, because longer breaks, while huge amount of data is transmitted, are totally unacceptable. GMPLS as a technology which establishes a common control plane for different transport layers is well prepared for recovery purposes. It can join different schemes to combine their advantages and avoid their individual drawbacks. Moreover, it offers a large variety of variable resilience functionality with diverse quality parameters (multi-layer, re-active as well as pro-active methods). Thus, it is possible to offer services differentiated on the basis of recovery offered to a client in GMPLS-controlled optical IP networks. The proposed tutorial will present fundamentals of the GMPLS-based recovery schemes. The problem of recovery differentiation will be emphasized and the second part of the proposal will be focused on this new challenge in resilient networks design. Different quality of recovery parameters with their mathematical and engineering models will be presented and a variety of approaches aiming at recovery-differentiated services provisioning will be given.
||Andrzej Jajszczyk is a Professor at the AGH University of Science and Technology in Krakow, Poland. He received M.S., Ph.D., and Dr Hab. degrees from Poznan University of Technology in 1974, 1979 and 1986, respectively. He spent a year at the University of Adelaide in Australia, two years at Queen’s University in Kingston, Ontario, Canada, and half a year at École Nationale Supérieure des Télécommunications de Bretagne, France, as a visiting scientist. He is the author or co-author of six books and more than 200 scientific papers, as well as 19 patents in the areas of high-speed networking, telecommunications switching, and network management. He was the founding President of the Institute of Communication and Information Technologies (ITTI) in Poznan, Poland. He has been a consultant to industry, telecommunications operators, and government agencies in Poland, Australia, Canada, France, Germany, India, and the USA. He was the founding editor of the IEEE Global Communications Newsletter, editor of IEEE Transactions on Communications, and editor-in-chief of IEEE Communications Magazine. He was Director of Magazines for IEEE Communications Society. Starting from January 1, 2006 he is IEEE ComSoc Director of Europe, Africa & Middle-East Region. He has been involved in organization of numerous technical and scientific conferences. He is a member of the Association of Polish Electrical Engineers and a Fellow Member of IEEE.|
||Piotr Chołda, M.Sc., assistant at AGH University of Science and Technology. He received a diploma in Telecommunications from AGH in 2001. In 2005 he finished a doctoral thesis entitled "The Reliability Analysis of Recovery Procedures in GMPLS-based Optical IP Networks". His research interests include network resiliency and network design. He is the co-author of 17 scientific papers on network resilience or quality of recovery|