Foreword

What is Software Defined Networking, and why has it created so much hype in the networking industry? This seems like a simple question to answer, yet I spent nearly three years traveling the world answering that very question for everyone from undergraduate engineering students to chief technology officers of major networking vendors.

In July 2010, when I gave my first public talk on OpenFlow, the protocol at the heart of SDN, virtually no one had heard of OpenFlow or Software Defined Networking, even among the university research networking community. By May 2011, just 10 months later, OpenFlow was the talk of Interop Las Vegas, with OpenFlow prototypes on display from 15 vendors; the Open Networking Foundation had been formed to ...

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