Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects simply to a non-technical, business audience. Over…
OpenFlow is an open communications protocol that acts on Layer 2 of the OSI model and provides access to the forwarding plane of a router or switch over the network. OpenFlow simply allows the path of data packets within the network of switches to be determined by software that is running on at least two routers.
OpenFlow was designed for network traffic management between switches and routers of different models and from different vendors. OpenFlow separates the programming of switches and routers from their hardware so that no hardware configuration needs to be done and all control can be flexibly attained through software. The University of California Berkeley and Stanford University collaborated for six years before OpenFlow finally went public in 2011.
There are three major parts involved in this technology:
OpenFlow was created because vendors sell switches or routers with limited programmability, leading to difficulties in traffic management and engineering, as well as inconsistent traffic flows between networking hardware from different vendors. OpenFlow provides this consistency by taking the control away from hardware and implementing it with software.
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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.
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