http://www.technologyreview.com/read_article.aspx?ch=specialsections&sc=tr10&id=22120
"... With OpenFlow installed on routers and switches, researchers can use software on their computers to tap into flow tables and essentially control a network's layout and traffic flow with the click of a mouse. This software-based access allows computer scientists to inexpensively and easily test new switching and routing protocols. "Today, security, routing, and energy management are dictated by the box, and it's very hard to change," says McKeown. "That's why the infrastructure hasn't changed for 40 years." ..."
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