Program

Program of RNDM 2014 is available here.


Keynote Talk I - November 17, 2014 (60 min)
Robustness Analysis of Networks under Large-scale Failures: Drawing Robustness Surfaces
Jose L. Marzo, Eusebi Calle (University of Girona, ES)
Abstract
Network science has significantly advanced in the last decade, providing insights into the underlying structure and dynamics of networks. Critical infrastructures, such as telecommunication networks, are omnipresent and play a pivotal role in ensuring the smooth functioning of modern day living. These networks have to constantly deal with failures of their components. Several strategies to mitigate the effects of single failures have been proposed in the literature. However, multiple failure scenarios are more difficult to manage. The concept of robustness is used to quantify how good a network is under those large-scale failure scenarios.
The aim of this talk is to, firstly, provide a survey of the current challenges that might lead to multiple failure scenarios of present day networks and, secondly, to review novel metrics able to quantify the network robustness. Finally, a unifying framework able to embrace all the proposed metrics is presented. These metric values are joined to form the “robustness surface”, which allows the visual assessment of network robustness variability. Results show that a network presents different robustness surfaces (i.e., dissimilar shapes) depending on the failure scenario and the set of metrics.
Biographies
Jose L. Marzo is a Full Professor at the Computer Architecture and Technology Department at the University of Girona, Spain. He was at the engineering and development departments with Telefonica before joining academia. His research interests are in the fields of communication networks, complex networks control and management, adaptive hypermedia systems. He leads the Broadband Communications and Distributed Systems. He coordinated the participation of his research group to some national Spanish and EU research projects.
He is also adjunct Professor at the Department of Electrical and Computer Engineering, Kansas State University, USA. There he is member of the Sunflower Networking research group. Jose L Marzo has participated to the technical program committees and chairing sessions of several conferences, including SPECTS, IEEE Globecom, ICC and Infocom. He has co-authored several papers published in international journals and presented in leading international conferences.

Eusebi Calle is an Associate Professor at the University of Girona (UdG), where he received his doctorate degree in computer science in 2004.
Since 1998 he has been a member of the research and teaching staff of the Broadband Communications and Distributed System Group at the UdG, where he develops his research in fault management, optical networks, QoS routing, and network science.
He has co-authored more than 100 papers in international journals and international conferences. He is also a member of different TPCs including DCRN and RNDM, and part of the Institute of Informatics and Applications at the UdG.


Keynote Talk II - November 18, 2014 (60 min)
What is the Impact of Network Protection on the Energy-efficiency?
Bart Lannoo (Ghent University – iMinds, BE)
Abstract
Increasing the protection of an ICT network typically has a bad impact on its energy consumption. We will discuss this trade-off for various ICT networks, ranging from access to core networks.
In access networks, typically a small number of customers is affected by a failure, and therefore network operators are not willing to invest in protection for this network segment. However, when migrating to long-reach optical access networks, covering a large number of customers, it becomes important to design protection schemes for the access network as well. Of course, they will impact the cost and energy consumption of the access segment, and the trade-off between protection cost / energy consumption and the number of customers affected, that we indicate by a newly defined failure impact factor, will be discussed.
In core networks, protection is employed to achieve high reliability in order to meet costly service level agreements (SLAs). Based on an analytical model, we estimate the power consumption of a protected IP-over-WDM network. As the impact of protection is directly reflected by a protection factor in the power consumption model, we can easily estimate its related power consumption. This allows us to design energy-efficient protection schemes for the core network, taking into account the trade-off between quality of protection and minimal energy consumption.
Biography
Bart Lannoo received a M.Sc. degree in electro-technical engineering and a Ph.D. degree from Ghent University (Belgium) in July 2002 and May 2008, respectively. Since August 2002, he has been working at the Internet Based Communication Networks and Services (IBCN) research group of the Department of Information Technology (INTEC) of Ghent University, where he is currently a postdoctoral researcher. As a member of the IBCN research group, he is also affiliated with the research institute iMinds. Since September 2011, he is coordinating the Green ICT research at IBCN.
His main research interests are in the field of fixed and wireless access networks, focusing on MAC protocols, Green ICT and techno-economics. He has been involved in various national and European research projects like the European FP7 projects ALPHA (Architectures for fLexible Photonic Home and Access Networks), OASE (Optical Access Seamless Evolution) and TREND (Towards Real Energy-efficient Network Design), and the iMinds projects MoCo (Monitoring of Containers) and GreenWeCan (Green Wireless Efficient City Access Networks). He is author or co-author of more than 100 international publications, both in journals and in proceedings of conferences.