Computer Science Department
School of Computer Science, Carnegie Mellon University
Early Experience with an internet Broadcast System
Based on Lverlay Multicast
Yang-hua Chu, Aditya Ganjam, T.S. Eugene Ng,
Sanjay G. Rao, Kunwadee Sripanidkulchai, Jibin Zhan, Hui Zhang
Keywords: Overlay networks, Internet evaluation, peer-to-peer,
In this paper, we report on experience in building and deploying
an operational Internet broadcast system based on Overlay Multicast.
In over a year, the system has been providing a cost-effective
alternative for Internet broadcast, used by over 3600 users spread
across multiple continents in home, academic and commercial environments.
Technical conferences and special interest groups are the early
adopters. Our experience con rms that Overlay Multicast can be
easily deployed and can provide reasonably good application performance.
The experience has led us to identify first-order issues that are
guiding our future efforts and are of importance to any Overlay
Multicast protocol or system. Our key contributions are (i) enabling
a real Overlay Multicast application and strengthening the case for
overlays as a viable architecture for enabling group communication
applications on the Internet, (ii) the details in engineering and
operating a fully functional streaming system, addressing a wide
range of real-world issues that are not typically considered in
protocol design studies, and (iii) the data, analysis methodology,
and experience that we are able to report given our unique standpoint.