Exploring the Performance Bene ts of End-to-End Path Switching [Extended Abstract] Shu Tao, Kuai Xu, Ying Xu, Teng Fei Lixin Gao, Roch Guerin, Jim Kurose, Don Towsley, Zhi-Li Zhang Categories and Subject Descriptors: C.2[Computer Systems Organization]:Computer Communication Networks General Terms: Measurement, Performance Keywords: Multi-homing, Overlay, Path switching Based on the measurement, our rst major observation is that for end-to-end delay, there exists a dominant path that almost always outperforms the other paths between a source and a destination node pair. This is likely because propagation delay is the primary factor that a ects the endto-end delay. The relative delay rankings of parallel paths only change when major events such as AS-level routing changes happen and the durations are usually long. Therefore there is not much delay bene t in performing dynamic path switching, especially at small time scales (e.g., minutes). Long-lived delay performance changes can be easily detected without resorting to any sophisticated prediction mechanism. On the other hand, there does not exist a dominant best performing path with respect to the end-to-end loss performance. Most paths experience losses during certain periods of time, and those lossy periods appear sporadic and somewhat uncorrelated among the paths between
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Exploring the performance benefits of end-to-end path switching
Tao, Shu; Xu, Kuai; Xu, Ying; Fei, Teng; Gao, Lixin; Guerin, Roch; Kurose, Jim; Towsley, Don; Zhang, Zhi-Li
Follow ACM SIGMETRICS Performance Evaluation Review
, Volume 32 (1)
Association for Computing Machinery – Jun 1, 2004
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