What's New

I am teaching a graduate seminar on: Network Science: Methods and Applications in Fall'09.

Note to PhD applicants: Please note that at this point I am not looking for additional PhD students in mainstream computer networking. My research interests focus on:

• The economics of Internet connectivity and peering
  
• Measure/Model/Understand the evolution of the Internet
  
• Applications of network science in biology, economics and sociology
  

One-Click Hosting Services: A File-Sharing Hideout, with Demetris Antoniades and Evangelos Markatos. To appear in the Proceedings of the ACM SIGCOMM Internet Measurement Conference (IMC), November 2009.

Multipath Load-Adaptive Routing: Putting the Emphasis on Robustness and simplicity, with Amund Kvalbein and Chidambaram Muthu. To appear in the Proceedings of the IEEE International Conference on Network Protocols (ICNP), October 2009.

On the scalability of BGP: the roles of topology growth and update rate-limiting , with A.Elmokashfi and A.Kvalbein. In the Proceedings of the ACM CoNext conference, Madrid, December 2008.

Spectral Probing, Crosstalk and Frequency Multiplexing in Internet Paths, with Partha Kanuparthy. In the Proceedings of the ACM SIGCOMM Internet Measurement Conference (IMC), October 2008.

Ten Years in the Evolution of the Internet Ecosystem, with Amogh Dhamdhere. In the Proceedings of the ACM SIGCOMM Internet Measurement Conference (IMC), October 2008.

Who I am, What I do. On a similar tone, how do you distinguish a researcher from a salesman?

Education

• Ph.D., University of Wisconsin-Madison December 2000
  Research advisor: Parmesh Ramanathan
• M.S., University of Rochester May 1996
• B.Eng., Technical University of Crete June 1995

Teaching

• CS 8803-NS: Network Science: Methods and Applications (Fall'09)
• CS 7270: Internet applications and services (Spring'09, Fall'07)
• In Fall'08, I co-taught a graduate course on Networks in Systems Biology together with Prof. Todd Streelman from the School of Biology.

• CS 6250: Advanced Computer Networks (Fall'06, Fall'02)
• CS 7260: Internetworking Architectures and Protocols (Spring'03)
• CS 8803: Experimental Performance Evaluation of Computer Systems and Networks (Spring'05)
• CS 8803: Network Measurements (Fall'03)
• CS 4270: Internet Lab (Fall'08, Spring'08, Spring'07)
• CS 4251: Computer Networks II (Fall'04, Spring'04)
• CS 3251: Computer Networks I (Fall'05)
• CS 2200: Systems and Networks (Spring'06)

Research

Ongoing Research Projects

• Economics of Internet peering
• Understanding the evolution of the Internet ecosystem
• Measurement tools for the detection of network neutrality violations
• The scalability of interdomain Internet routing
• Network science: methods and applications

Public-domain software

• ShaperProbe: Detect if your ISP is rate-limiting your traffic
• DiffProbe: Detect if your ISP is giving lower priority to some of your network traffic
• Pathload2: Measure the available bandwidth of your Internet connection (using M-Lab servers)
• Pathrate, Pathload and ABget (bandwidth estimation tools)

Previous Research Projects

• Intelligent route control and performance-based routing
• Router buffer sizing
• Network bandwidth estimation
• Proportional differentiated services

Research advisees

• Partha Kanuparthy (since Jan'07, PhD program)
• Saeideh Bakhshi (since June 09, PhD program)
• Aemen Lodhi (since Aug'09, PhD program)
• Saamer Akhshabi (since Aug'09, PhD program)

Former PhD advisees:

• Amogh Dhamdhere (graduated in May'09, now at the CAIDA research center)
• Ravi Prasad (graduated in December'07, now at Cisco Research)
• Ruomei Gao (co-advised with Ellen Zegura, graduated in August'07, now at Akamai)
• Manish Jain (graduated in December'06, now at Microsoft Research)
• Yong Zhu (co-advised with Mostafa Ammar, graduated in August'06, now at Amazon)
• Qi He (co-advised with Mostafa Ammar, graduated in August'05, now at Yahoo!)

Funding

• National Science Foundation,
  "NECO: Towards a Theory of Network Evolution",
  September 2008 to September 2011.

• Cisco Systems Inc,
  "Video streaming rate adaptation using available bandwidth measurements",
  January 2008 to January 2009.
• Cisco Systems Inc,
  "Ingress Traffic Engineering and Performance Routing",
  July 2007 to July 2008.
• Telchemy Inc,
  "Network Problem Diagnosis in VoIP and IPTV applications",
  January 2007 to December 2007.
• Cisco Systems Inc,
  "Dynamics and Stability of Performance-Driven Edge Routing Systems",
  January 2006 to December 2006.
• National Science Foundation,
  Nets-NBD: Intelligent routing control systems: panacea or imminent disaster? ,
  September 2005 to September 2007.

• EGT Inc,
  "Using network measurements in video transport",
  September 2005 to August 2006.
• National Science Foundation,
  CAREER: Putting Measurements to Work: Design and Evaluation of Measurement-Driven Network Mechanisms,
  September 2004 to August 2009.

• Georgia Tech Broadband Institute,
  "Design of Overlay Network Routers using Network Processors",
  July 2003 to July 2004.
• National Science Foundation,
  NetReact Services: Middleware Technologies to Enable Real-Time Collaboration,
  October 2002 to October 2005.
• Intel Corporation,
  Workstations and network processors for network measurements laboratory,
  equipment grant, August 2002.
• US Department of Energy (Office of Science),
  Scientific Discovery through Advanced Computing (SciDAC) program.
  Bandwidth Estimation: measurement methodologies and applications,
  in collaboration with CAIDA,
  September 2001 to August 2004.

Professional Service (recently)

• ACM/IEEE Transactions on Networking, Editor
• USENIX/ACM IMC 2007, TPC Co-Chair
• ACM HotNets 2007, General Chair
• 3rd International Workshop on Wireless Network Measurement (WiNMee'07), Co-Chair
• ACM Computer Communication Review (CCR), Editor
• ACM SIGCOMM 2007, 2006, 2004, TPC member
• ACM SIGMETRICS 2007, 2006, TPC member
• IEEE INFOCOM 2009, 2008, 2007, 2006, 2005, 2004, 2002, TPC member
• USENIX/ACM IMC 2005, 2004, TPC member
• PAM (Passive & Active Measurement) 2005 , Program chair (and member of the Steering Committee 2005-2007)
• Bandwidth Estimation workshop 2003, Program co-chair
• ICDCS 2003, TPC member