کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
465368 | 697554 | 2008 | 17 صفحه PDF | دانلود رایگان |
In overlay networks consisting of underlying physical nodes and links, data files are transferred by overlay routing managed at application level. The end-to-end file transfer delay depends on both logical and physical topologies resulting from overlay routing. In this paper, we focus on six types of four-terminal four-router physical networks, and investigate the impact of topology inconsistency on the file transfer delay. The analysis model is based on a two-layer queueing network, taking into account both logical and physical topologies. The model is validated in comparison with ns-2 simulation. Numerical examples show that the end-to-end file transfer delay is small when both logical and physical topologies are the same. It is also observed that the end-to-end delay significantly depends on the traffic intensity for some logical topologies, regardless of physical topology.
Journal: Performance Evaluation - Volume 65, Issue 10, October 2008, Pages 725–741