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As the Internet is now a critical component of our information infrastructure, several recent papers have proposed using multipath routing for increase the Internet's reliability, and to give users greater control over the service they receive. However, the paths chosen by these protocols are not guaranteed to have high diversity. In this paper, we propose yet another multipath routing scheme (YAMR) for the interdomain case. YAMR provably constructs a set of paths that is resilient to any one inter-domain link failure, thus achieving high reliability in a systematic way. Further, even though YAMR maintains more paths that BGP, it actually requires significantly less control traffic, thus alleviating instead of worsening the Internet scalability. This reduction in churn is achieved by a novel hiding technique that automatically localize failures leaving the greater part of the Internet completely oblivious.

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