On available bandwidth measurement implementation and experiment

Abstract

-We describe the algorithm and the implementation and experiment for available bandwidth measurement based on variable speed probing and zoom-in/zoom-out [7]. We show that, compared with other techniques, our algorithm yields better performance with low overhead and fast convergence because it detects the change of traffic trends (through variable speed probing) rather than specific patterns of probing samples. It can also self-adapt to any bandwidth (through zoom-out) and respond to resolution requirement (through zoom-in). Therefore, no prior knowledge about bottleneck bandwidth is required and measurement resolution can be specified to meet application requirements. We focus on the implementation and experiment and present some results and statistics. We are currently conducting more experiment over live networks to gain more experience and to further improve the algorithm.