Chuck Fraleigh cfraleigh@riverbed.com
	Work: Riverbed Technology 201 Second St, Suite 410 San Francisco, CA 94107	Home: 883 Helena Dr. Sunnyvale, CA 94087 (650) 996-0631

Background

Research

• Network Provisioning
  Network service providers offer Service Level Agreements (SLAs) which guarantee a bound on the delay that will be incurred in their network. For my Ph.D. thesis, I developed a procedure to determine how much bandwidth is needed on each link in a network to meet a particular SLA. For large backbone networks, we found that you only need bandwidth 10% - 15% above the average data rate of the traffic to meet most delay guarantees (e.g. if you have 90 Mb/s of traffic, you only need a 100 Mb/s link).
  Provisioning IP Backbone Networks to Support Latency Sensitive Traffic
  Chuck Fraleigh, Fouad Tobagi, and Christophe Diot
  Proc. IEEE INFOCOM 2003, April 2003
  Paper: (pdf)

  Provisioning Internet Backbone Networks to Support Latency Sensitive Applications
  Chuck Fraleigh
  Ph.D. thesis, Stanford University, May 2002
  Full Thesis: (ps)(pdf)

• Network Measurement Systems
  As part of my thesis research I developed a system to collect network measurements from the Sprint IP network. These measurments formed the basis for the network provisioning research and have been used in many other research projects at Sprint's Advanced Technology Labs. Currently the measurement systems are deployed on more than 60 links in Sprint's network and they collect over 10 TB of data during each collection period. Each system can capture data on links up to 2.5 Gb/s (OC-48 links).
  Packet-Level Traffic Measurements from the Sprint IP Backbone
  Chuck Fraleigh, Sue Moon, Bryan Lyles, Chase Cotton, Mujahid Kahn, Deb Moll, Rob Rockell, Ted Seely, and Christophe Diot
  IEEE Network, to appear
  Paper: (pdf)

  Measurement and Analysis of Single-Hop Delay on an IP Backbone Network
  Konstantina Papagiannaki, Sue Moon, Chuck Fraleigh, Patrick Thiran, and Christophe Diot (2003).
  IEEE Journal on Selected Areas in Communications, Special Issue on Internet and WWW Measurement, Mapping, and Modeling, vol. 21, no. 6, August 2003
  Paper: (pdf)
  Earlier version which appeared in INFOCOM 2002: (pdf)

  Design and Deployment of a Passive Monitoring Infrastructure
  Chuck Fraleigh, Christophe Diot, Bryan Lyles, Sue Moon, Philippe Owezarski, Dina Papagiannaki, and Fouad Tobagi
  Proc. of Passive and Active Measurement: PAM-2001, April 2001
  Paper: (ps)(pdf)

• Other Publications and Projects
  A Taxonomy of IP Traffic Matrices
  Alberto Medina, Chuck Fraleigh, Nina Taft, Supratik Bhattacharyya, and Christophe Diot
  Proc. SPIE ITCOM, August 2002
  Paper: (pdf)

  Service Differentiation in the Internet to support Multimedia Traffic
  Fouad Tobagi, Wael Noureddine, Benjamin Chen, Athina Markopoulou, Chuck Fraleigh, Mansour Karam, Jose-Miguel Pulido, and Jun-ichi Kimura
  Proc. IWDC , September 2001
  Paper: (pdf)

  LUDDIDE - Location and User Dependent Information Delivery
  This project developed a system to perform service discovery and composition for location aware PDAs. For example, if you walk into a bookstore carrying a PDA with wireless Internet access (e.g. Palm VII or Palm V with CDPD modem), the PDA would contact the LUDDIDE server and provide your location information. The LUDDIDE server would forward your request to the bookstore's server and compose a web page based on the bookstore server's response and your own personal preference information. You could use the PDA to check if a certain book was in stock, read reviews, and even pay electronically. You could also use the PDA to find nearby restaurants, get maps and directions, or check your stock prices. The project got some interesting press coverage in the September/October 2000 issue of MIT Technology Review.

  Fault Tolerant Satellite Ground Station
  This project redesigned the satellite ground station used for the OPAL project to improve its fault detection and recovery. The goal was to create a ground station that was reliable enough to be remotely operated over the Internet from anywhere in the world.

  Video Panoramas
  This project developed a system to capture 360 degree video panoramas (like Quicktime VR, but in full motion video), and transmit them over a Digital TV broacast channel. For the project demo we captured a video tour of the Stanford campus and created a playback system that allowed the user to change the viewing angle at any time during the tour. Take a look at the project web page for some sample screen shots or a 90MB video clip. Here are some pictures of the camera rig we used to capture the video.

  Searchable Campus Map
  I wrote a searchable campus map for the Stanford web page my first year at Stanford in 1997. This year, they finally updated it! The link will send you to the new version.