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Steve Uhlig's Publications

Building an AS-topology model that captures route diversity
Citation key MFMRU-BAMCRD-06
Author Mühlbauer, Wolfgang and Feldmann, Anja and Maennel, Olaf and Roughan, Matthew and Uhlig, Steve
Title of Book SIGCOMM '06: Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Pages 195–206
Year 2006
ISBN 1-59593-308-5
DOI http://dx.doi.org/10.1145/1159913.1159937
Location Pisa, Italy
Address New York, NY, USA
Month August
Publisher ACM Press
Abstract An understanding of the topological structure of the Internet is needed for quite a number of networking tasks, e. g., making decisions about peering relationships, choice of upstream providers, interdomain traffic engineering. One essential component of these tasks is the ability to predict routes in the Internet. However, the Internet is composed of a large number of independent autonomous systems (ASes) resulting in complex interactions, and until now no model of the Internet has succeeded in producing predictions of acceptable accuracy. We demonstrate that there are two limitations of prior models: (i) they have all assumed that an Autonomous System (AS) is an atomic structure - it is not, and (ii) models have tended to oversimplify the relationships between ASes. Our approach uses multiple quasi-routers to capture route diversity within the ASes, and is deliberately agnostic regarding the types of relationships between ASes. The resulting model ensures that its routing is consistent with the observed routes. Exploiting a large number of observation points, we show that our model provides accurate predictions for unobserved routes, a first step towards developing structural models of the Internet that enable real applications.
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