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Conference Papers Year : 2015

Errors Announcing 32-bit ASNs in BGP Routes

Abstract

We present evidence of a phenomenon where there is large scale misconfigurations of BGP routers starting in 2007 and continuing to the present date. This has to do with the change from 16-bit to 32-bit autonomous system (AS) numbering and the employment of the fictitious AS, AS23456. This error strongly biases estimations of the number of ASes performing a type of inter-domain routing called multi-exit routing. In data from 2010, over half of apparent cases are in fact false. We show how to detect this error and obtain a truer picture of the extent of multi-exit routing.
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Dates and versions

hal-01110652 , version 1 (28-01-2015)

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Riad Mazloum, Jordan Augé, Dario Rossi, Timur Friedman. Errors Announcing 32-bit ASNs in BGP Routes. DRCN'15: 11th International Conference on Design of Reliable Communication Networks, poster paper, Mar 2015, Kansas City, United States. pp.87-88, ⟨10.1109/DRCN.2015.7148991⟩. ⟨hal-01110652⟩
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