Tutorials

Tutorial 1: Risk-aware Resilient Network Design (P. Cholda, A. Jajszczyk) - SLIDES

ABSTRACT

A contemporary network designer has a very rich toolbox with survivability mechanisms and mathematical methods to describe their operations. Yet, this specialist might not have a good interface with the business or social relationship management units that are in charge of deciding on what exactly money can be spent. On the other hand, the manager does not have a technical knowledge to understand what the network engineer proposes. The interface between business and technology is in this case based on risk engineering. The tutorial will show the main steps in the risk management cycle suited to support the selection and assignment of recovery methods.

TOPICS

  • Risk engineering in networks.
  • Business issues in recovery and reaction to massive failures (catastrophes).
  • Shift towards service continuity.
  • Performance evaluation for risk engineering in resilient network design.
  • Business-suitable metrics, such as Value-at-Risk.
  • Methods to combine technical impact with monetary losses.
  • Optimization in risk-aware resilient network design.
  • Beyond cost minimization.
  • Methods to select risk responses.

OBJECTIVES

  • To enlarge the interest of network designers in a broader context of business management (risk as an aspect of technology-business interface) and human safety (risk as a method to deal with catastrophes with a large societal impact).
  • To show the performance evaluation specialized for risk engineering in resilient network design with examples.
  • To show the optimization approaches for risk engineering in resilient network design with examples.

EXPECTED BACKGROUND KNOWLEDGE OF PARTICIPANTS

  • Recovery methods in telecommunications and computer networks.
  • Basics of probabilistic modeling, statistics, and optimization.

SPEAKER BACKGROUND

Andrzej Jajszczyk is the Director of the National Science Centre and a professor at the AGH University of Science and Technology in Krakow, Poland. He graduated from Poznan University of Technology. He was a visiting professor at the University of Adelaide in Australia, at Queen’s University in Kingston, Ontario, Canada, and at Ecole Nationale Supérieure des Télécommunications de Bretagne, France. He is the author or co-author of seven books and more than 290 research papers, as well as 19 patents in the areas of telecommunications switching, high-speed networking, network management and reliability. He has been a consultant to industry, telecommunications operators, and government agencies in Australia, Canada, France, Germany, India, Poland, and the USA. He is a Fellow of the Institute of Electrical and Electronics Engineers (IEEE). He was the founding editor of IEEE Global Communications and Editor-in-Chief of IEEE Communications Magazine. He is Associate Editor-in-Chief of China Communications. He held important positions in IEEE Communications Society, such as: Director of Magazines, Director of Europe, Africa, and Middle East Region, Vice President – Technical Activities. He has been involved in organization of numerous conferences. Andrzej Jajszczyk is Vice-President of the Kyoto-Krakow Foundation, fostering cultural and technical relations between Asia and Poland.

Piotr Chołda works as an Assistant Professor at Department of Telecommunications, AGH University of Science and Technology. He specializes in design of computer and communications networks. Recently, he has focused on risk-based communications networking. He is the co-author of sixteen refereed journal papers and two conference tutorials. He was a Technical Program Committee (TPC) Co-Chair of DRCN 2011. Now, he serves as a TPC Co-Chair of NOMS 2014. He is a member of the editorial board of  IEEE Communications Surveys and Tutorials and leads the Book Review Column in IEEE Communications Magazine.

ACKNOWLEDGEMENTS

The numerical results presented during the tutorial are obtained with the help of Krzysztof Rusek and Piotr Guzik, both PhD students at AGH University of Science and Technology. The first part of this tutorial is based on paper: Piotr Chołda, Eirik L. Følstad, Bjarne E. Helvik, Pirkko Kuusela, Maurizio Naldi, Ilkka Norros, Towards Risk-aware Communications Networking, Reliability Engineering and System Safety, vol. 109, January 2013.

AFFILIATION

AGH University of Science and Technology, founded in 1919, is ranked as one of the top Polish universities involved in research and education in information technologies. The University consists of 16 faculties and employs about 2000 faculty members serving nearly 30 000 students within undergraduate, postgraduate, and continuing education programmes.

The Department of Telecommunications is part of the Faculty of Computer Science, Electronics and Telecommunications, and is an important centre for education and research in information and communication technologies focusing on high-speed networking and services to the e-world. The Department staff consists of more than 50 people (including 5 full professors); about 25 doctoral research students are affiliated with the Department. Since 1996 the Department of Telecommunications has been involved in various European projects including 4th, 5th, 6th, and 7th Framework Programmes. It has also been active in developing strategies and network planning for major Polish telecommunications operators. Its staff has served as consultants for network operators, equipment vendors, and regulatory bodies in Poland and abroad as well as reviewers of European projects. Department members have been active in professional societies, organizing international and national conferences (including IEEE and IFIP events) and research workshops as well as holding important editorial positions in leading journals and magazines, such as IEEE Communications Magazine, IEEE Transactions on Communications, Computer Communications, and Security and Communication Networks.

Tutorial 2: Resilience of Heterogeneous Networks (T. Cinkler)

ABSTRACT

This tutorial will present selected telecommunications areas where solving resilience problems is not trivial. These areas are mostly complex heterogeneous environments where the number of protection possibilities grows further. The focus will be on unveiling these problems, explaining modeling obstacles and tricks as well as providing solution methods and simulation results.

TOPICS

  • Introduction on availability, failures and resilience
  • Introduction on heterogeneous networks
  • Bound on resource requirements of shared protection
  • Multi-layer resilience
  • Multi-cast resilience
  • Physical impairments and resilience
  • TE and resilience (Traffic Engineering)
  • Multi-domain and multi-provider resilience
  • Multi-RAT and FMC resilience
  • Radio Access Technology and Fixed-Mobile Convergence

OBJECTIVES

Discussing some new aspects of resilience as well as related new results. The tutorial will turn attention to some interesting somewhat unexpected results and to promising open problems for further research.

EXPECTED BACKGROUND KNOWLEDGE OF PARTICIPANTS

Knowledge of basic communications networking terminology, as well as e.g., resilience, protection, reliability, etc.

SPEAKER BACKGROUND

Tibor Cinkler has received M.Sc.('94) and Ph.D.('99) degrees from the Budapest University of Technology and Economics (BME), Hungary, where he is currently associate professor at the Department of Telecommunications and Media Informatics (TMIT) and ehere he habilitated in 2013. He received his DSc degree from the Hungarian Academy of Sciences in 2013. His research interests focus on optimisation of routing, traffic engineering, design, configuration, dimensioning and particularly resilience of IP, Ethernet, MPLS, ngSDH, OTN and of heterogeneous GMPLS-controlled WDM-based multilayer networks as well as of heterogeneous FMC access networks. He is author of over 220 refereed scientific publications (with over 1350 citations) and of 4 patents.

He has been involved in numerous related European and Hungarian projects including ACTS METON and DEMON; COST 266, 291, 293; IP NOBEL I and II and MUSE; NoE e-Photon/ONe, e-Photon/ONe+ and BONE; CELTIC PROMISE and TIGER2; NKFP, GVOP, ETIK; and he has been member of ONDM, DRCN, RNDM, BroadNets, AccessNets, IEEE ICC and Globecom, ECOC, EUNICE, CHINACOM, Networks, WynSys, ICTON, etc. Scientific and Programm Committees.

He has been guest editor of a Feature Topic of the IEEE ComMag and reviewer for many journals. He has organised DRCN 2001 and 2013, ONDM 2003, Networks 2008 and ICUMT 2011 conferences in Budapest.He has been one of the chairs of the ICC 2013 ONS in Budapest, Hungary. He chairs the IFIP WG 6.10 on Optical networking.He teaches various courses on networking and optimisation at the university, as well as for companies and tutorials at conferences and summer and winter schools.

He received numerous awards including: Dimitris Chorafas Prize for Engineeing, ICC best paper award, Tivadar Puskás award, Virág-Pollák award 4 times, the 60-year HTE anniversary medal, the Bolyai Medal, etc.

Tutorial 3: Resilience and Survivability of Multilevel and Multirealm Networks:  Modelling and Analysis (J. Sterbenz)

ABSTRACT

This tutorial will first provide a brief overview to the disciplines and analysis of resilient, survivable, and disruption-tolerant networks, including dependability (reliability and availability), fault-tolerance, and graph-theoretic complex-systems analysis.  Modelling and analysis will be presented multilevel (e.g. physical, PoP logical, end-to-end) and multirealm (e.g. AS graph) topologies using analytical and simulation-based techniques.  Both static (wired) and dynamic (MANET and DTN) networks will be considered.  A network challenge taxonomy will be presented, followed by emphasis on understanding and increasing resilience to attacks by an intelligent adversary based on node/link criticality and centrality, as well as using multipath geodiversity to be resilient against large-scale disasters.

SPEAKER BACKGROUND

James P.G. Sterbenz is Associate Professor of Electrical Engineering &  Computer Science and a member of technical staff at the Information &  Telecommunication Technology Center at The University of Kansas, and is a Visiting Professor in the School of Computing Communications and InfoLab 21 at Lancaster University in the UK.  He has previously held senior staff and research management positions at BBN Technologies, GTE Laboratories, and IBM Research.  His research interests include resilient, survivable, and disruption-tolerant networking, Future Internet architectures, and active and programmable networks.  He is director of the ResiliNets Research Group, and PI for a number current and past funded research programs, including the NSF FIND and GENI programs, the EU FIRE ResumeNet project, a US DoD project in highly-mobile ad hoc disruption-tolerant networking, and leads the GpENI international programmable network testbed.  He received a D.Sc.  in Computer Science from Washington University in St. Louis in 1991.  He has been a program chair for IEEE GI, GBN, and HotI; IFIP RNDM, IWSOS, PfHSN, and IWAN; is the current chair of the IEEE ComSoc TCCC, past chair of TCGN, on the Board of Directors of KanREN (Kansas Research and Education Network) and the Advisory Board for the NorNet (Norwegian Real-World Large-Scale Multi-Homing Testbed), and was on the editorial board of IEEE Network.  He is principal author of the book High-Speed Networking: A Systematic Approach to High-Bandwidth Low-Latency Communication. 

Tutorial 4: Resilient Optical Network Virtualization (B. Jaumard, C. Develder) - SLIDES

ABSTRACT

Cloud computing services are emerging as an essential component of the industry ICT infrastructure and, consequently, one of the fastest growing business opportunities for Internet infrastructure and service providers. Many enterprises are moving their services towards cloud infrastructures. In this rapidly growing market, datacenter (DC) scalability is becoming a major technical challenge for service providers as well as its performance optimization, with a key focus on the network technologies and their control. In fact, service providers have to cope with cloud services delivered by more and more geographically distributed DCs, ever increasing requests by users and DC providers for very high throughputs and low latencies, resource dynamicity and elasticity (i.e. flexible storage and computing on demand) and seamless resource/service migration. The future Internet architecture needs to offer:

  • An efficient integration between the high-performance and high-bandwidth optical network infrastructure of operators and services/resources provided by DCs and server farms.
  • End-to-end cloud service provisioning eco-system that automatically and efficiently bundles DC infrastructure services (i.e. computing and storage) with the required operator optical network connectivity services.
  • A highly resilient virtual infrastructure as a major disadvantage of a virtual  architecture is that a single hardware fault or a defect in the virtualization infrastructure (VI) software can lead to the failure of multiple virtual nodes by, for example, preventing VMs from being scheduled or preventing VMs from accessing I/O devices. Hence, a key to enabling the deployment of virtual clusters is to enhance the resiliency of the VI to faults in the hardware or virtualization software.

TOPICS

Cloud computing services are emerging as an essential component of the industry ICT infrastructure  and,  consequently,  one  of  the  fastest  growing  business  opportunities  or Internet infrastructure and service providers. Many enterprises are moving their services towards cloud infrastructures. 

In this rapidly growing market, datacenter (DC) scalability is becoming a major technical challenge  for  service  providers  as  well  as  its  performance  optimization,  with  a  key focus on  the  network  technologies  and  their  control.  In  fact,  service  providers  have  to cope  with  cloud  services  by  more  and  more  geographically  distributed DCs, ever increasing requests by users and DC providers for very high throughputs and low latencies,  resource  dynamicity  and  elasticity  (i.e.,  flexible  storage  and  computing on demand) and seamless resource/service migration.

The future Internet architecture needs to offer:

  • A  high-performance and high-bandwidth optical network  infrastructure for an efficient inter-DC connectivity that requires seamless resource/service migration.
  • An efficient end-to-end cloud service provisioning, which minimizes the energy consumption.
  • A highly resilient virtual infrastructure taking into account that a single hardware fault or a defect in the virtualization infrastructure (VI) software can lead to the failure of multiple virtual nodes. 

This cloud context significantly impacts the problem of planning (optical) networks, esp.  because  of  the  (i)  interdependence  of  DC  and  network  infrastructure,  (ii)  the introduction of anycast routing principles, and (iii) virtualization. We will highlight the current state-of-the-art  that  addresses  these  challenges  with  appropriate  and scalable network planning approaches.

OBJECTIVES

Provide an overview of virtual network planning for converged optical and data centers, explain the ideas and the challenges, and review the recent related work.

EXPECTED BACKGROUND KNOWLEDGE OF PARTICIPANTS

Good knowledge of optical network planning and design

SPEAKER BACKGROUND

Brigitte  Jaumard  holds  a  Concordia  University  Research  Chair,  Tier  1,  on  the Optimization  of  Communication  Networks  in  the  Computer  Science  and  Software Engineering  (CSE)  Department  at  Concordia  University.  Her  research  focuses  on mathematical  modeling  and  algorithm  design  for  large-scale  optimization  problems arising  in  communication  networks,  transportation  networks  and  artificial  intelligence.

Recent  studies  include  the  design  of  the  most  efficient  algorithms  for  p-cycle  based protection schemes, under static and dynamic traffic, and their generalization to the so-called  p-structures,  which  encompass  all  previously  proposed  pre-cross-connected  preconfigured protection schemes. Other recent studies deal with dimensioning, provisioning and scheduling algorithms in optical grids or clouds, in broadband wireless networks and in  passive  optical  networks.  In  Artificial  Intelligence,  contributions  include  the development of efficient optimization algorithms for probabilistic logic (reasoning under uncertainty)  and  for  automated  mechanical  design  in  social  networks  (design  of  trust estimator  tools).  In  transportation,  her  recent  contributions  include  new  algorithms  for freight train scheduling and locomotive assignment. B. Jaumard has published over 300 papers in international journals in Operations Research and in Telecommunications.

Chris Develder currently is associate professor with the research group IBCN of the Dept. of Information Technology (INTEC) at Ghent University - iMinds, Ghent, Belgium. He received  the  M.Sc.  degree  in  computer  science  engineering  and  a  Ph.D.  in  electrical engineering from Ghent University (Ghent, Belgium), in July 1999 and December 2003 respectively.  From  Oct.  1999  to  Dec.  2003,  he  has  been  working  at  INTEC  as  a Researcher for the Research Foundation - Flanders (FWO), in the field of network design and  planning.  From  Jan.  2004  to  Aug.  2005,  he  worked  for  OPNET  Technologies,  on transport  network  design  and  planning.  In  Sep.  2005,  he  re-joined  INTEC  as  a  post-doctoral researcher, and as a post-doctoral fellow of the FWO since Oct. 2006. In Oct. 2007  he  obtained  a  part-time,  and  since  Feb.  2010  a  fulltime  professorship  at  Ghent University.  He  was  and  is  involved  in  national  and  European  research  projects  (IST David,  IST  Phosphorus,  IST  E-Photon  One,  BONE,  IST  Alpha,  IST  Geysers,  FP7 Increase, FP7 C-DAX, etc.).  His research interests include dimensioning, modeling and optimizing optical (grid/cloud) networks and their control and management, smart grids, as well as information retrieval and extraction. He regularly serves as reviewer/TPC member for international journals and  conferences  (IEEE/OSA  JLT,  IEEE/OSA  JOCN,  IEEE/ACM  Trans.  Networking, Computer  Networks,  IEEE  Network,  IEEE  JSAC;  IEEE  Globecom,  IEEE  ICC,  IEEE SmartGridComm, ECOC, etc.)

Nguyen Minh Bui is a PhD student in the Computer Science and Software Engineering Department of Concordia University. He completed a Master in Computer Science at the Institute de la Francophonie pour l’Informatique (IFI) in Hanoi, Vietnam in 2006  and a Computer Science Engineering degree at the Hanoi University of Technology, Vietnam in 2002. His  research  interests  include  mathematical  programming  and  large  scale  optimization techniques applied to various design and planning problems arising in optical networks.

AFFILIATION

Brigitte  Jaumard  holds  a  Concordia  University  Research  Chair  (Tier  1)  on  the Optimization  of  Communication  Networks.  Within  the  framework  of  the  Chair,  B. Jaumard  supervises  around  20  graduate  students  on  various  network  optimization problems :  scheduling  and  channel  assignment  in  wireless  networks  with/without overlapping channels, equipment location in Passive Optical Networks (PONs), design of resilient optical networks, design of automated design mechanisms in order to enhance resource sharing in Peer-to-Peer (P2P) networks, management of multi-domain networks, etc. B. Jaumard also belongs to GERAD, a multi university research center founded in 1979.  GERAD  involves  some  sixty  experts  from  a  mix  of  disciplines:  quantitative methods  for  management,  operations  researchers,  computer  scientists,  mathematicians and  mathematical  engineers,  from  all  the  4  universities  of  Montreal.  Its  mission  is  to develop all aspects of the mathematics of decision making in large, complex systems be they technological, commercial or economic, and ahead of decision making, to develop the  mathematics  of  model  building  as  pertaining  to  statistical  analysis,  simulation  and data  mining.  Lastly,  Brigitte  Jaumard  is  a  professor  in  the  department  of  Computer Science and Software Engineering at Concordia University.

The  IBCN  research  group  (Internet  Based  Communication  Networks  and  Services, ibcn.intec.ugent.be) is part of the Future Internet Department of iMinds and belongs to the Department of Information Technology (INTEC) of Ghent University (UGent). At a national  level  the  group  is  collaborating  with  over  100  industrial  partners  in  many multidisciplinary projects. Also internationally there is a strong involvement in European research  projects,  especially  in  the  Future  Internet  area,  with  about  50  finished  and running EU projects over the past 10 years. Since the start of the IBCN group in 1992, research  resulted  in  over  1200  publications  in  international  journals  and  conference proceedings, 60 PhDs, 30 international awards, and 4 spin-off companies.