RNDM 2017 - 9th International Workshop on Resilient Networks Design and Modeling

Final Program

Time	Monday, September 4, 2017	Tuesday, September 5, 2017	Wednesday, September 6, 2017
9.00-10.30	Plenary Session I Keynote Talk I	Plenary Session II Keynote Talk II	Technical Session V
10.30-11.00	Coffee break	Coffee break	Coffee break
11.00-13.00	Technical Session I Group Photo	Tutorial - Part I	Technical Session VI Closing Session + BPA
13.00-14.00	Lunch	Lunch	Farewell Coffee break
14.00-16.00	Technical Session II	Tutorial - Part II
16.00-16.30	Coffee break	Coffee break
16.30-18.30	Technical Session III	Technical Session IV
	Welcome Reception (19:00-22:00)	Gala Dinner (20:00-23:00)

September 4, 2017

Registration (8:30 - )

Opening Session (9:00 - 9:30)

Plenary Session
Keynote Talk I - 9:30-10:30
Affine Flow Thinning - a traffic protection mechanism for networks with variable link capacity Michal Pioro (Warsaw University of Technology, PL & Lund University, SE)

	Abstract Flow Thinning (FT) is a traffic routing and protection mechanism for communication networks whose links experience fluctuations in available capacity. To cope withthis phenomenon, end-to-end traffic demands are equipped with dedicated sets of logical tunnels whose nominal capacity is subject to state-dependent thinning to account for variable capacity of the links fluctuating below their nominal (maximum) values. Consequently, the instantaneous traffic sent between the demand's end nodes must accommodate to the current total capacity available on its dedicated tunnels. FTis relevant for example for wireless mesh networks utilizing MPLS tunnels. The multi-commodity flow optimization problem related to FT is NP-hard and its non-compact linear programming formulation requires path generation. The presentation is devoted to optimization modelling of Affine Flow Thinning – an important, practical version of FT, where tunnels are thinned according to a linear (affine) formula.

	Biography Michal Pioro is a professor at the Institute of Telecommunications, Warsaw University of Technology (Poland). At the same time, he is a professor at the Department of Electrical and Information Systems Lund University (Sweden). He received a Ph.D. degree in telecommunications in 1979, and a D.Sc.degree (habilitation) in 1990, both from the Warsaw University of Technology. In 2002, he received the Polish State Professor title. His research interests concentrate on modeling, optimization and performance evaluation of telecommunication and computer networks and systems. He is the first author of a monograph Routing, Flow, and Capacity Design in Communication and Computer Networks, Morgan-Kaufmann (Elsevier), USA, 2004, and more than 150 technical papers presented in telecommunication and operations research journals and conference proceedings. He has led many research projects for telecom industry in the field of network modeling, design, and performance analysis. Heis deeply involved in international scientific research including the EC funded projects.


Coffee Break (10:30 - 11:15)


Technical Session I - Theory of Network Resilience (11:15 - 12:40) Chair: Teresa Gomes, University of Coimbra (PT)
1.	Reachability of wireless nodes with probabilistic link failure (Invited) (11:15-11:45) Emma Fitzgerald (Lund University, Sweden)

2.	Building Uniformly Most-Reliable Networks by Iterative Augmentation (FP) (11:45-12:15) Pablo Gabriel Romero (Universidad de la Republica, Uruguay)

3.	Column Generation Technique for Optimization of Survivable Flex-grid SDM networks (SP) (12:15-12:40) Roza Goscien and Piotr Lechowicz (Wroclaw University of Science and Technology, Poland)


Group Photo of RNDM 2017 Participants (12:40 - 13:00)


Lunch (13:00 - 14:00)


Technical Session II - Methods for Measurement, Evaluation, or Validation of Resilience (14:00 - 15:45) Chair: Amaro F. de Sousa, Institute of Telecommunications, University of Aveiro (PT)
1.	Network Robustness Simulator: a Case Study on Epidemic Models (Invited Paper) (14:00 - 14:30) Jose Luis Marzo (Universitat de Girona, Spain); Sergio Gomez Cosgaya (University of Girona, Spain); Caterina M. Scoglio (Kansas State University, USA)

2.	Variations in Graph Energy: A Measure for Network Resilience (SP) (14:30 - 14:55) Tristan Shatto and Egemen K.Cetinkaya (Missouri University of Science and Technology, USA)

3.	Empirical Evaluation of Network Optimization via Graph Spectra and Energy (SP) (14:55 - 15:20) Richard Snyder, Tristan Shatto and Egemen K. Cetinkaya (Missouri University of Science and Technology, USA)

4.	Modeling Link Weights in Backbone Networks (SP) (15:20 - 15:45) Ian Pittwood and Egemen K. Cetinkaya (Missouri University of Science and Technology, USA)



Coffee Break (15:45 - 16:30)


Technical Session III - Disaster Resilience (16:30 - 17:55) Chair: Jose Luis Marzo, Universitat de Girona (ES)
1.	Minimizing the Network Availability Upgrade Cost with Geodiversity Guarantees (FP) (16:30 - 17:00) Amaro F. de Sousa (Institute of Telecommunications, University of Aveiro, Portugal); Teresa Gomes (University of Coimbra & INESC COIMBRA, Portugal); Rita Girão-Silva (FCTUC, University of Coimbra & INESC-Coimbra, Portugal); Lucia Martins (University of Coimbra & INESC-Coimbra, Portugal)

2.	On Centrality-Related Disaster Vulnerability of Network Regions (FP) (17:00 - 17:30) Farabi Iqbal (Universiti Teknologi Malaysia, Malaysia); Fernando A. Kuipers (Delft University of Technology, The Netherlands)

3.	Resilient IoT eHealth solutions in case of disasters (SP) (17:30 - 17:55) (COST CA15127-RECODIS paper) Marjan Gusev (University Sts. Cyril and Methodius, Macedonia, the former Yugoslav Republic of); Sasko Ristov (University of Innsbruck & Institute of Computer Science, Austria); Radu Prodan (University of Innsbruck, Austria); Matija Dzanko (University of Zagreb, Croatia); Ivana Bilic (University of Split, Croatia)



Welcome Reception (19:00 - 22:00)


September 5, 2017

Keynote Talk II - 9:00-10:00
The Age of Programmable Networks: Algorithms for Designing Flexible and Robust SDNs Stefan Schmid (Aalborg University, DK)

	Abstract Computer networks currently undergo a phase transition, in that they are becoming more and more programmable, and hence introduce interesting new algorithmic opportunities and flexibilities (e.g., for the design, deployment, and operation of computer networks) -- but also challenges. In this talk, I will provide an overview of these opportunities and challenges, describe algorithmic models and techniques to address them, and finally outline open questions for future research. A main focus of the talk will be on the design of robust and self-optimizing computer networks.

	Biography Stefan Schmid is an Associate Professor in Computer Science at Aalborg University, Denmark. He received his MSc and PhD from ETH Zurich, Switzerland, was a postdoc at TU Munich and Uni Paderborn, a Senior Research Scientist at T-Labs Berlin, and a visiting professor at CNRS (LAAS), Toulouse and at Universite catholique de Louvain (UCL). He serves as the Editor of the Distributed Computing Column of the Bulletin of the EATCS, and as an Associate Editor of IEEE Transactions on Network and Service Management (TNSM). His research interests revolve around the fundamental and algorithmic problems arising in distributed and networked systems. Stefan Schmid received the IEEE Communications Society (ComSoc) Early Career Award 2016.


1.	Smart City and IoT Resilience, Survivability, and Disruption Tolerance: Challenges, Modelling, and a Survey of Research Opportunities (Invited) (10:00-10:30) James P. G. Sterbenz (The University of Kansas, USA & Lancaster University, UK & The Hong Kong Polytechnic University, HK)


Coffee Break (10:30 - 11:00)


Tutorial Part 1 (11:00-13:00)
A practical view of modeling and quantification of network survivability Poul E. Heegaard (Norwegian University of Science and Technology, NO) Kishor S. Trivedi (Duke University, US)

	Abstract The goal of this tutorial is to provide an introduction to the concept and definition of survivability and to demonstrate approaches to model and quantify survivability in networks. In our tutorial we define survivability as the "ability to provide services in compliance with the requirement even in presence of major and minor failures in network infrastructure and service platforms caused by undesired events that might be external or internal". The network survivability is quantified as defined by the ANSI T1A1.2 committee, which is the transient performance from the instant an undesirable event occurs until steady state with an acceptable performance level is attained. Examples are taken from the survivability of mobile networks and virtual connection over an IP network as well as from smartgrid. After an introduction to survivability and the modelling framework for quantification of survivability, the tutorial will present an exercise with example from a 5G mobile system. The objective with the exercise is to provide useful insight and experience with the use of an analytic tool (Sharpe), and programming of a discrete event simulator.

	Biographies Poul E. Heegaard is Professor at NTNU (Norwegian University of Science and Technology), Department of Telematics (Department of Information Security and Communication Technology from Jan 1, 2017). Heegaard has since 2006 been on the faculty at NTNU, and was Head of Department 2009-2013. He has also been a Senior Research Scientist at Telenor R&I, and Senior Scientist at SINTEF Telecom and Informatics. Heegaard is the author/co-author of more than 150 articles and has supervised 9 PhDs. He has given numerous tutorial and talks at international meetings and conferences. His research interests cover performance, dependability and survivability evaluation and management of communication systems. Special interest has been rare event simulation techniques, and monitoring, routing and management in dynamic networks.His current research focus is on performance, dependability and survivability in interacting complex systems, which includes distributed, autonomous and adaptive management and routing in communication networks and services. Examples are Software Defined Networking and ICT-power system integration (Smart Grid). Kishor S. Trivedi holds the Hudson Chair in the Department of Electrical and Computer Engineering at Duke University, Durham, NC. He has been on the Duke faculty since 1975. He is the author of a well-known text entitled, Probability and Statistics with Reliability, Queuing and Computer Science Applications, published by Prentice-Hall; a thoroughly revised second edition (including its Indian edition) of this book has been published by John Wiley. He has also published three other books. He is a Fellow of the IEEE, and a Golden Core Member of IEEE Computer Society. He is the recipient of IEEE Computer Society Technical Achievement Award for his research on Software Aging and Rejuvenation. Trivedi has published over 420 articles and has supervised 42 Ph.D. dissertations, and has given numerous keynotes, tutorials, and talks at international meetings and conferences. His research interests are in reliability, availability, performance, performability, security and survivability evaluation of computer and communication systems. He works closely with industry in carrying out reliability/availability analysis, providing short courses on reliability, availability, performabilitymodeling and in the development and dissemination of software packages such as SHARPE and SPNP.


Lunch (13:00 - 14:00)


Tutorial by Poul E. Heegaard & Kishor S. Trivedi - Part 2 (14:00-16:00)


Coffee Break (16:00 - 16:30)


Technical Session IV - Resilience of Optical Networks (16:30 - 19:00) Chair: Josep Sole Pareta, Universitat Politecnica de Catalunya (ES)
1.	Connectivity Orchestration in Multi-Provider Elastic Optical Networks (Invited Paper) (16:30-17:00) Alessio Giorgetti, Francesco Paolucci, Piero Castoldi (Scuola Superiore Sant'Anna, IT)

2.	On robust FSO network dimensioning (FP) (17:00-17:30) Fabio D'Andreagiovanni (CNRS, Sorbonne University - UTC, France); Dritan Nace (Compiegne University of Technology, France); Michal Pioro (Warsaw University of Technology & Lund University, Poland); Michael Poss (LIRMM, CNRS, France); Marinela Shehaj (Universite de Technologie de Compiegne, France); Artur Tomaszewski (Warsaw University of Technology, Poland)

3.	Link Addition Framework for Optical CDNs Robust to Targeted Link Cut Attacks (FP) (17:30-18:00) Carlos Natalino (KTH Royal Institute of Technology, Brazil); Aysegul Yayimli (Istanbul Technical University, Turkey); Lena Wosinska and Marija Furdek (KTH Royal Institute of Technology, Sweden)

4.	Device Reliability Performance Awareness: Impact of RWA on EDFA Failure Reparation Cost in Optical Networks (FP) (18:00-18:30) Pawel Wiatr (Uppsala University, Sweden); Jiajia Chen, Paolo Monti and Lena Wosinska (KTH Royal Institute of Technology, Sweden); Di Yuan (Uppsala University, Sweden)

5.	EFAH: An Energy and Fatigue Aware Heuristic for Provisioning Highly Available Connections in Optical Backbone Networks (FP) (18:30-19:00) Carlos Natalino (KTH Royal Institute of Technology, Brazil); Filip Idzikowski (Poznan University of Technology, Poland); Luca Chiaraviglio (University of Rome Tor Vergata, Italy); Lena Wosinska and Paolo Monti (KTH Royal Institute of Technology, Sweden)


Gala Dinner (20:00 - 23:00)


September 6, 2017

Technical Session V - Resilient Cloud Computing Architectures/Solutions (9:00 - 10:30) Chair: Marija Furdek, KTH Royal Institute of Technology (SE)
1.	On the Initialization in Column Generation for Cloud-Ready and Survivable EONs (Invited Paper) (9:00-9:30) Roza Goscien (Wroclaw University of Science and Technology, Poland)

2.	Toward Resilient Networks with Fog Computing (SP) (9:30-9:55) Amir Modarresi (The University of Kansas, USA); James P. G. Sterbenz (The University of Kansas, USA & Lancaster University, UK & The Hong Kong Polytechnic University, HK)

3.	Failure Process Characteristics of Cloud-Enabled Services (SP) (9:55-10:20) Besmir Tola (Norwegian University of Science and Technology, Norway); Yuming Jiang (Norwegian University of Science and Technology (NTNU), Norway); Bjarne E. Helvik (NTNU - Norwegian University of Science and Technology, Norway)


Coffee Break (10:20 - 11:00)


Technical Session VI - Resilience of SDN Networks (11:00 - 12:55) Chair: Fernando A. Kuipers, Delft University of Technology (NL)
1.	Optimising Microservice-based Reliable NFV Management & Orchestration Architectures (Invited Paper) (11:00-11:30) Thomas Soenen (UGent - iMinds, Belgium); Wouter Tavernier (Ghent University - imec, Belgium); Didier Colle (IMEC - Ghent University, Belgium); Mario Pickavet (Ghent University - iMinds, Belgium)

2.	Machine Learning Aided Traffic Tolerance to Improve Resilience for Software Defined Networks (FP) (11:30-12:00) Siddharth Gangadhar (The University of Kansas, USA); James P. G. Sterbenz (The University of Kansas, USA & Lancaster University, UK & The Hong Kong Polytechnic University, HK)

3.	A Framework for Improving Network Resilience Using SDN and Fog Nodes (SP) (12:00-12:25) Amir Modarresi (The University of Kansas, USA); Siddharth Gangadhar (The University of Kansas, USA); James P. G. Sterbenz (The University of Kansas, USA & Lancaster University, UK & The Hong Kong Polytechnic University, HK)

4.	Characterization of Failure Dynamics in SDN Controllers (FP) (12:25-12:55) Petra Vizarreta (Technical University of Munich, Germany); Poul E. Heegaard (Norwegian University of Science and Technology & NTNU, Norway); Bjarne E. Helvik (NTNU - Norwegian University of Science and Technology, Norway); Wolfgang Kellerer (Technical University of Munich, Germany); Carmen Mas Machuca (Technical University of Munich, Germany)


Closing Session + Best Paper Award (12:55 - 13:15)


Farewell Coffee break (13:15 - 14:00)