IEEE/ACM Transactions on Networking (TON)
BGP routing stability of popular destinations
Proceedings of the 2nd ACM SIGCOMM Workshop on Internet measurment
Towards a global IP anycast service
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Finding a needle in a haystack: pinpointing significant BGP routing changes in an IP network
NSDI'05 Proceedings of the 2nd conference on Symposium on Networked Systems Design & Implementation - Volume 2
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In this article we present a methodology by which an autonomous system (AS) can estimate the stability of their BGP routes without requiring access to restricted BGP data. We demonstrate a novel measurement approach using DNS anycast as an indicator of routing instability. Using this method, even end-users may monitor their ISP's routing stability, something which was previously infeasible without the continual use of expensive ICMP traceroutes or access to generally restricted routing information. We then perform a case study from within a large ISP in order to quantify and determine the cause of the routing instability. To determine causation, we correlate external and internal BGP events with variations in the final anycast destination. We conclude that anycast is extremely sensitive to anomalous BGP events and that by monitoring anycast it may be possible for large networks to receive early warning of BGP instability.