The goal of this project has been to identify and quantify how well the current wide-area routing (BGP) is performing and what are its main weaknesses. Although we might only hear about BGP misconfiguration when there is an internet-wide breakdown, the result of this paper shows that BGP misconfiguration is amazingly pervasive. For example most of (at least 75%) of the new route announcements in internet is a result of BGP misconfiguration and 0.2-1.0% of the BGP table is corrupted! The surprising result is that all these misconfigurations have little effect on connectivity and reachability!
To achieve these results the authors target only two kind of unintended misconfigurations being the accidental insertion of routes (origin misconfiguration) and accidental propagation of routes which should have been filtered (export misconfiguration). To monitor and investigate BGP misconfigurations, they flag the short lived route announcements with further use emails to investigate the possible causes of the problem. The authors identify several main reasons of misconfigurations and propose certain improvements at for example user interface design methodologies of BGP system.
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ReplyDeleteAnything surprising to you about their results? Any concern about the collection during the lowest traffic time of the year?