[Colloquium] Sanjay Rao talk today - 12:15 at TTI-C

[Meridel Trimble]

Toyota Technological Institute Talk
Speaker:  Sanjay Rao, Carnegie Mellon University
Speaker's Homepage:   http://www-2.cs.cmu.edu/~sanjay/

Date:  Wednesday, April 7, 2004
Time:  12:15 PM
Place:  TTI-C, 1427 E. 60th St., 2nd Floor (University Press Building)
Lunch Provided

Title:The Case for End System Multicast

Abstract: For much of the 1990's, the conventional wisdom was that
bandwidth-demanding applications such as broadcasting and conferencing are best
supported by the IP Multicast architecture. However, concerns with IP Multicast
pertaining to per-group state, deployment and support for higher level
functionality has prompted us to advocate and explore an alternate architecture
for supporting such applications that we termed End System Multicast (ESM).
Here, end systems participating in the application organize into efficient
overlays for data delivery, and there is no support from routing infrastructure. 

This talk has two parts. In the first part, I'll describe our recent and ongoing
efforts to build and deploy a broadcasting system based on ESM that has been
used for several real events including the Sigcomm and SOSP conferences and has
been used by over 3600 users. The efforts are both helping us validate ESM, and
are guiding our research directions. I will present my experience designing and
implementing self-organizing protocols which form a key part of the system. In
the second part, I'll present a systematic study of a key issue for protocol
designs for ESM: heterogeneous bandwidth constraints in application end-point
environments. I'll conclude with a reflection on how far we have managed to
advance the case for End System Multicast, and describe the road that lies ahead.


If you have questions, or would like to meet the speaker, please contact Carole
at 773.702.5033 or cfkipp at tti-c.org.

For information on future TTI-C talks or events, please go to the TTI-C Events
page at http://www.tti-c.org/events.shtml
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