University of Cambridge > Talks.cam > Computer Laboratory Systems Research Group Seminar > Observed Relationships between Size Measures of the Internet or Is the Internet really just a star network after all?

Observed Relationships between Size Measures of the Internet or Is the Internet really just a star network after all?

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This talk covers some observations on the relationships between three measures of the size of the Internet over more than ten years. The size of the BGP4 routing table, the number of active Autonomous Systems, and the total size of the Internet, have fairly simple relationships despite the Internets growth by two orders of magnitude. In particular, the size of the BGP4 system appears to have grown approximately in proportion to the square root of the size of the globally addressable Internet. A simple model that partially explains this square law is described. This offers a way to understand and monitor the scaling of the BGP4 system.

BIO : Brian E. Carpenter joined the University of Auckland in September 2007. He was appointed Professor in January 2009. Before that, he spent ten years with IBM at various locations, working on Internet standards and technology. From 1997 he was at IBM ’s Hursley Laboratory in England. From 1999 to 2001 he was at iCAIR, the international Center for Advanced Internet Research, sponsored by IBM at Northwestern University in Evanston, Illinois. He was most recently based in Switzerland as a Distinguished Engineer and a member of the IBM Academy of Technology.

Before joining IBM , he led the networking group at CERN , the European Laboratory for Particle Physics, in Geneva, Switzerland, from 1985 to 1996. This followed ten years’ experience in software for process control systems at CERN , which was interrupted by three years teaching undergraduate computer science at Massey University in New Zealand.

He holds a first degree in physics (Downing College, Cambridge) and a Ph.D. in computer science (University of Manchester), and is a Chartered Engineer (UK). He has been an active participant in the Global Grid Forum, and in the Internet Engineering Task Force (IETF), where he has worked on IPv6 and on Differentiated Services. He served from March 1994 to March 2002 on the Internet Architecture Board, which he chaired for five years. He also served as a Trustee of the Internet Society, and was Chairman of its Board of Trustees for two years until June 2002. He was Chair of the IETF from March 2005 to March 2007.

This talk is part of the Computer Laboratory Systems Research Group Seminar series.

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