SDN basics for service providers
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SANTA CLARA, Calif. -- During his opening keynote address at the third annual Open Networking Summit on Tuesday, Google's Vint Cerf revealed that Google has re-engineered all of its internal data center networks to run OpenFlow-based software-defined networks.
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Cerf, an Internet pioneer and Google's chief Internet evangelist, spent most of his presentation talking about software-defined networking (SDN) from a broader perspective, explaining how it can tackle unresolved technology challenges and deliver new applications and services.
He also discussed how the industry should proceed with this transformation: by focusing on interoperability and standards, by marketing SDN's added value rather than its protocols, and by designing loosely coupled systems so new SDN technologies aren't brittle.
In the middle of his presentation, however, Cerf veered into the latest developments of Google's OpenFlow strategy. Google is notoriously secretive about the hardware and software platforms it uses to power its services, but at last year's Open Networking Summit, it announced G-Scale, an OpenFlow-based backbone network interconnecting its data centers.
Cerf said Tuesday that Google's OpenFlow use has expanded into all of its data center networks, adding that the company was able to re-engineer these networks during a series of six- to nine-month implementations without disrupting any of its services.
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