DATE: Thursday, February 10, 2005
TIME: 12:00 pm - 1:00 pm
PLACE: Hamerschlag Hall D-210

Aditya Akella

Routing Strategies for Improved Internet Performance and Reliability

Internet access speeds of large enterprises and educational institutions have improved dramatically over the past few years---from under 1.5Mbps to over 100Mbps. However, this higher-speed connectivity is still ineffective at providing end-users with good download performance and robustness from service interruptions. Past studies, including my own, have shown that one of the key reasons for this poor performance is the prevelance of bottleneck links inside various Internet Service Provider networks.

In this talk, I will present a study of how end-networks can employ a clever Internet route selection technique, called Multihoming Route Control, to avoid these performance bottlenecks and obtain much better Internet performance. Using Internet-scale measurements conducted over Akamai's content distribution infrastructure, I will show that by multihoming to three providers, and intelligently scheduling transfers across the providers, an end-network could potentially improve its Internet response times and reliability by up to 40%. Furthermore, I will show that the performance and reliability benefits from multihoming are comparable with those from more powerful route selection paradigms, such as Overlay Routing. I will also describe the design and performance evaluation of a route control system that can be deployed by large multihomed enterprises to extract nearly-optimal Internet performance from

This talk is based on joint work with Bruce Maggs and Srinivasan Seshan at CMU, and Anees Shaikh at IBM Research.

Aditya Akella is a Ph.D. candidate at Carnegie Mellon University working under the supervision of Professor Srinivasan Seshan. He received his Bachelor of Technology degree from Indian Institute of Technology, Madras in 2000. His research interests lie in the areas of computer systems and
networking with emphasis on improving the Internet performance and reliability of wired and wireless Internet systems. He is a recipient of the IBM Ph.D. Fellowship for the academic years 2003-04 and 2004-05.

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