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With the prevalence of cloud computing and contents delivery networking,OpenFlow-based centrally-managed networks with flexible and dynamic trafficengineering are demanded. To maintain a high quality of service of the network,detecting and locating high-loss links is essential. Therefore, in this paper,a measurement framework is proposed to promptly locate all high-loss links witha minimized load on both data-plane and control-plane incurred by themeasurement, which assumes only standard OpenFlow functions. It combines anactive measurement by probing multicast packets along a designed route and apassive measurement by collecting flow-stats of the probing flow at selectedswitch ports in an appropriate sequential order to access switches. Inparticular, by designing the measurement route based on the backbone-and-branchtree (BBT) route scheme, the measurement accuracy and the measurement overhead(i.e., the number of accesses to switches until locating all high-loss links)can be balanced. The numerical simulation demonstrates the effectiveness of ourproposal.

Effective Route Scheme of Multicast Probing to Locate High-loss Links in OpenFlow Networks