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Keynote Speakers

Keynote 1: Anja Feldmann (Deutsche Telekom Labs/TU Berlin, Germany)

Title: On the importance of Internet eXchange Points for today's Internet ecosystem


Internet eXchange Points (IXPs) are generally considered to be the successors of the four Network Access Points that were mandated as part of the decommissioning of the NSFNET in 1994/95 to facilitate the transition to "public Internet" as we know it today. While this does not tell the whole story of the early beginnings, what is true is that since around 1994, the number of IXPs has grown to more than 300 with the largest IXPs handling traffic volumes comparable to those of
Tier-1 ISPs. But IXPs have never attracted much attention from the networking research community. At first glance, this lack of interest seems understandable as IXPs have apparently little to do with current "hot" topic areas such as data centers and cloud services or software defined networking (SDN) and mobile communication.

However, we argue that, in fact, IXPs are not only cool monitoring points with huge visibility but are all about data centers and cloud services and even SDN and mobile communication. To this end, we in this talk start with an overview of the basic technical and operational aspects of IXPs and then highlight some of our initial research results regarding application mix, AS-graph, Internet infrastructure distribution, and traffic flows.


Since 2006 Anja Feldmann, Ph.,D. is a full professor at TU Berlin, Germany. From 2009 to 2013 she was Dean of the Computer Science and Electrical Engineering department of TU Berlin, Germany. From 2000 to 2006 she headed the network architectures group first at Saarland University and then at TU Munich. Before that (1995 to 1999) she was a member of the Networking and Distributed Systems Center at AT&T Labs -- Research in Florham Park, New Jersey. Her current research interests include network architecture, Internet measurement, network performance debugging. She has published more than 60 papers and has served on more than 50 program committees, including as Co-Chair of ACM SIGCOMM 2003 and ACM IMC 2011 and as Co-PC-Chair of ACM SIGCOMM 2007 and ACM IMC 2009.

She is a recipient of the Gottfried Wilhelm Leibniz Preis 2011, the highest honor awarded in German research, and the Berliner Wissenschaftspreis 2011. She is a member of the German Academy of Sciences Leopoldina and the supervisory board of SAP AG. She received a M.S. degree from the University of Paderborn, Germany and a Ph.D. from Carnegie Mellon University.

Keynote 2: K. K. Ramakrishnan (AT&T Labs Research, Florham Park, NJ)

Title: Networking Cloud Data Centers: Providing Dependable Storage and Computation


Cloud computing has changed how enterprises run and manage their IT systems. Cloud computing platforms provide customers with flexible on demand resources. Data centers exploit economies of scale and provide a low cost structure to users as a result of multiplexing gains achieved by exploiting virtualization. Applications running on these large data centers have also adapted to be able to sustain component failures. However, for wide-spread migration of enterprise applications to the Cloud, it is desirable to provide dependable compute and storage capabilities while exploiting the elasticity and flexibility offered by Cloud computing. We have proposed our CloudNet architecture to logically unify cloud and enterprise data center resources, providing opportunities for cross data center load balancing and dynamic application placement. We build on CloudNet to support Disaster Recovery (DR) solutions, addressing the needs of storage in the face of data center failures, and provide server availability in the face of transient server failures.

Our DR solution looks at the difficult problem of providing storage replication across Cloud sites that are geographically separated. Cloud based DR promises economies of scale and on-demand provisioning that is a perfect fit for the infrequent yet urgent needs of disaster recovery. However, the WAN latency between a cloud and enterprise site can be a major performance bottleneck when synchronously replicating an application’s data into the cloud. I will describe our proposal called ‘Pipelined synchrony’ to address this problem and show how PipeCloud can address even the stringent needs of financial applications that require DR without data loss. I will then describe our approach to provide high availability through replication of live memory snapshots for virtual machines. The use of a ‘transient server’ abstraction and utilizing a shared backup server allows us to deal with termination of VMs with little application impact. With Cloud services exploiting ‘spot instances’ to improve multiplexing and data centers moving to renewable energy sources, the ability to provide high availability in such environments is increasingly important. All of this work was done in collaboration with Prof. Prashant Shenoy of UMass and his students.


Dr. K. K. Ramakrishnan is a Distinguished Member of Technical Staff at AT&T Labs-Research. He joined AT&T Bell Labs in 1994 and has been with AT&T Labs-Research since its inception in 1996. Prior to 1994, he was a Technical Director and Consulting Engineer in Networking at Digital Equipment Corporation. Between 2000 and 2002, he was at TeraOptic Networks, Inc., as Founder and Vice President.

Dr. Ramakrishnan is an AT&T Fellow, recognized for his fundamental contributions on communication networks and lasting impact on AT&T and the industry, including his work on congestion control, traffic management and VPN services. He is an IEEE Fellow, and has received other awards. His work on the "DECbit" congestion avoidance protocol was recognized in the 1995 retrospective issue of ACM Sigcomm Computer Communication Review as one of the 16 most important papers published over the previous 25 years in ACM Sigcomm publications. The work once again received the ACM Sigcomm Test of Time Paper Award in 2006. He has published nearly 200 papers and has more than 108 patents issued in his name. K.K. has been on the editorial board of several journals and has served as the TPC Chair and General Chair for several networking conferences and has been a member of the National Research Council Panel on Information Technology for NIST.

K. K. received his MS from the Indian Institute of Science (1978), MS (1981) and Ph.D. (1983) in Computer Science from the University of Maryland, College Park, USA. His web page can be found at: (