OpenSample : A Low-Latency , Sampling-Based Measurement Platform for SDN

Content Provider	Semantic Scholar
Author	Suh, Junho Dixon, Colin Felter, Wes Carter, John
Copyright Year	2013
Abstract	In this paper we propose, implement and evaluate OpenSample: a low-latency, sampling-based network measurement platform targeted at building faster control loops for software-defined networks. OpenSample leverages sFlow packet sampling to provide near–real-time measurements of both network load and individual flows. While OpenSample is useful in any context, it is particularly useful in an SDN environment where a network controller can quickly take action based on the data it provides. Using sampling for network monitoring allows OpenSample to have a 100 millisecond control loop rather than the 1–5 second control loop of prior polling-based approaches. We implement OpenSample in the Floodlight OpenFlow controller and evaluate it both in simulation and on a testbed comprised of commodity switches. When used to inform traffic engineering, OpenSample provides up to a 150% throughput improvement over both static equal-cost multi-path routing and a polling-based solution with a one second control loop.
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Alternate Webpage(s)	http://domino.watson.ibm.com/library/CyberDig.nsf/papers/0FF376D1191A343E85257C7100475A8F/$File/rc25444.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article