I was a member of Srini's Distributed Systems Network Protocols and Applications (DNA) group, 2000-2005. My research was funded in most part by an IBM PhD Fellowship for the years 2003-2005. I graduated in Sep 2005.

You can find a copy of my resume here. For my publications, please click here.

Here's a brief overview of some key projects I have worked on:

• Thesis research: Endpoint-Based Routing Strategies for Improving Internet Performance and Resilience

  In my thesis research, I adopted a systematic, four-step approach to the problem of optimizing the performance of well-connected Internet end-points, such as universities, large enterprises and data centers. I showed that constrained bottlenecks inside and between carrier networks in the Internet could limit the performance of such end-points. I observed that a clever end point-based strategy, called Multihoming Route Control, can help end-points route around these bottlenecks, and thereby improve performance. Furthermore, I showed that the Internet's topology, routing and trends in its growth may essentially worsen the wide-area congestion in the future. To this end, I proposed changes to the Internet's topology and routing protocols to guarantee good future performance. Results from my thesis work have appeared in SIGCOMM 2003 [paper, abstract], SIGCOMM 2004 [paper, abstract], USENIX 2004 [paper, abstract], PODC 2003 [paper, abstract] and IMC 2003 [paper, abstract]. Also check out these web pages: [Performance bottlenecks] [Multihoming Route Control].

  I defended my thesis on 22 June 2005. The final version is now available online.

• Other work:

  I have also worked on a variety of other projects, both in CMU and elsewhere. The topics I have worked on include Wireless Networking, Game Theory, Security, Measurements, System Design and Implementation, and Analysis. I will put up a more comprehensive research page in the near future. For now, here is a brief list:

  • Chaotic Wireless Networks [MobiCom 2005 paper]
    This is an exciting area that I have just started looking into. Web page forthcoming. Joint work with Glenn Judd, Peter Steenkiste and folks at WiFiMaps.com.
    
    
  • Selfish Behavior and Stability of the Internet [SIGCOMM 2002 paper, abstract, web page (dated)]
    With Richard Karp, Christos Papadimitriou and Scott Shenker.
    
    
  • DNS Characterization and Implications on the Design of Distributed Systems [IMC 2004 paper, abstract]
    With Jeffrey Pang, Bruce Maggs and Roberto De Prisco.
    
    
  • Using DNS for Network Control [IMC 2004 paper, abstract]
    With Anees Shaikh and Balachander Krishnamurty.
    
    
  • False Sharing and Shared Congestion Management [ICNP 2003 paper, abstract, web page (dated)]
    With Hari Balakrishnan
    
    
  • Representative Internet Measurements [NYMAN 2003 paper]
    With Anees Shaikh.
    
    
  • DDoS Attacks on ISP Networks [MPDS 2003 paper]
    With Ashwin Bharambe and Mike Reiter.
    
    
  • Exploring Congestion Control [CMU Tech Report ]
    With Scott Shenker and Ion Stoica.

Teaching at CMU

• Spring 2004: I co-taught Graduate Computer Networks with Hui Zhang.
  
  
• Spring 2002: I was a TA for the Undergraduate Networks class taught by Peter Steenkiste and Mor Harchol-Balter.

Mentoring at CMU

I helped mentor Arvind Kannan's Senior Undergraduate Thesis in 2002-2003. Currently, Srini and I are mentoring Sameer Moidu's work. Also, I helped guide Jeffrey Pang's research during 2003-2004.