Traffic Flow Measurements

Researcher:   Nevil Brownlee, Information Technology Systems and Services (ITSS),The University of Auckland (New Zealand)

Dr. Nevil Brownlee recently completed a five month sabbatical leave from the University of Auckland, New Zealand, working with the CAIDA group here at the San Diego Supercomputer Center (SDSC). Nevil is co-chair of the Internet Engineering Task Force's (IETF's) Real-time Traffic Flow Measurement Working Group (RTFM). He is also the creator of NeTraMet, an open-source flow measurement tool which implements the RTFM traffic measurement system.

While on sabbatical, he lead the CAIDA Metrics Working Group, which aims to:

• Produce FAQ documents on Network Measurement,
• Recommend metrics which providers and their customers should measure, and techniques they can use to do so, and
• Propose measurement requirements for hardware/software vendors.

Nevil continues to develop NeTraMet. While at CAIDA, he produced a version of NeTraMet for Microsoft Windows (making it accessible to a wider group of users, especially students). He also worked on a CoralReef version of NeTraMet, making it available for networks using high-speed fiber (OCx) links.

Back at home in New Zealand, in addition to his research and teaching responsibilities, he is the Director, Technology Development, Information Technology Systems and Services (ITSS), where he is responsible for Campus Network and Central Systems Software Support at The University of Auckland.

The Measurement and Network Analysis Group was pleased to collaborate with Nevil while he was here at SDSC. We provided resources for his work on real-time passive measurements of commodity Internet traffic at SDSC, and appreciate his contributions to our activities as well. One part of Nevil's work was to examine the response time for DNS requests sent to the root names servers, and the percentage of requests which did not elicit replies. We hope to have a report on this work in a future Network Analysis Times.

back to top

To subscribe, or if you have comments and/or questions, please contact us.
© 2000    The NLANR Measurement and Network Analysis Group,  located at the San Diego Supercomputer Center (SDSC), University of California, San Diego (UCSD).   This work is supported by the National Science Foundation (NSF) (cooperative agreement no. ANI-9807479). Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s), and do not necessarily reflect the views of the NSF.