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07.04.2017 11:29 Age: 17 days

Guest Talk: "Overlays over Everything - Advances in Multisubstrate Overlay Networks"

We are pleased to announce a guest talk by Jörg Liebeherr (University of Toronto, Canada).

When: Monday, 2017-04-10 at 11:00h
Where: COMSYS seminar room (E3, ground floor)
Title: Overlays over Everything - Advances in Multisubstrate Overlay Networks



Peer-to-peer overlay networks have shown to be a disruptive technology. The ability to create large networks on-the-fly has enabled new application services in support of content distribution, file sharing, video streaming, and interactive teleconferences. But could the role of self-organizing overlay networks be even greater? Is it conceivable that peer network protocols become the foundation for a new architecture that is entirely based on the concepts of self-organizing overlays networks? Can peer network protocols evolve into a follow-on technology to the Internet protocols? We claim that potential and fundamental limits of the peer networking approach remain largely unexplored. We envision a network architecture characterized by the coexistence of virtually unlimited numbers of peer networks that can quickly grow to arbitrarily large sizes and adapt to changes in the number of peers and substrate networks. Using applications that we built in recent years, and an ongoing project for safety-critical train communication, we make the case that the overlay networking approach has distinct advantages in situations with unknown, uncertain, and changing requirements for information access.


Jörg Liebeherr (S'88, M'92, SM'03, F'08) received the Ph.D. degree in Computer Science from the Georgia Institute of Technology in 1991. After a Postdoc at the University of California, Berkeley, he joined the Department of Computer Science at the University of Virginia in 1992. In 1997-1998 he was an Associate Professor in the Department of Electrical Engineering at Polytechnic University. Since Fall 2005, he is with the Department of Electrical and Computer Engineering of the University of Toronto as the Nortel Chair of Network Architecture and Services. He has served on editorial boards and program committees of several journals and conferences in computer networking. He was Editor-in-Chief of IEEE Network in 1999-2000. He is a co-author of the textbook "Mastering Networks: An Internet Lab Manual", published by Addison-Wesley in 2004. He was co-recipient of a best paper award at ACM Sigmetrics 2005. He was elected to the Board of Governors of the IEEE Communications Society for 2003-2005, and chair of the IEEE Communications Society Technical Committee on Computer Communications in 2004-2005. He received an NSF Career award in 1996, a University of Virginia Teaching and Technology fellowship in 1995, a Virginia Engineering Foundation fellowship in 2002, and an Outstanding Service award from the the IEEE Communications Society Technical Committee on Computer Communications in 2006. He is a Fellow of the IEEE. His current research interests are networks with service guarantees and self-organizing peer networks.

Further info: www.comm.toronto.edu/~jorg/