Conference Paper

End-to-End Asymmetric Link Capacity Estimation.

DOI: 10.1007/11422778_63 Conference: NETWORKING 2005: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems, 4th International IFIP-TC6 Networking Conference, Waterloo, Canada, May 2-6, 2005, Proceedings
Source: DBLP

ABSTRACT Knowledge of link capacity is important for network design, management, and utilization. With the increasing popularity of asym- metric link technologies (such as DSL, 1xRTT, and satellite links), it is desirable to have a capacity estimation technique, which can simulta- neously measure forward and backward direction link capacities on an Internet path. Moreover, this estimation must often be "sender only", because of receiver limitations or lack of standards. In this study, we propose a simple, fast and accurate technique, called AsymProbe, to es- timate asymmetric link capacities. AsymProbe is a "sender only", round trip procedure. It achieves asymmetric link capacity estimation by strate- gically altering the ratio of probe and acknowledgement packet sizes. Us- ing simulation and testbed experiments, we validate AsymProbe with a variety of network configurations. The results show that AsymProbe can correctly estimate the asymmetric link capacities as long as an appropri- ate packet size ratio can be employed.

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