Linked by Thom Holwerda on Tue 17th Apr 2012 17:16 UTC
Google "Google treats its infrastructure like a state secret, so Holzle rarely speaks about it in public. Today is one of those rare days: at the Open Networking Summit in Santa Clara, California, Holzle is announcing that Google essentially has remade a major part of its massive internal network, providing the company a bonanza in savings and efficiency. Google has done this by brashly adopting a new and radical open-source technology called OpenFlow."
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OpenAPI
by tony on Tue 17th Apr 2012 19:41 UTC
tony
Member since:
2005-07-06

So OpenFlow isn't really "open source" software, it's more of an open standard/API to program the forwarding tables of network devices. If a Layer 2/3 switch is OpenFlow capable, an OpenFlow controller can program the L2/L3/L4 rules through this API without involving routing protocols or such.

I don't think there's an open source OpenFlow controller, but there are closed sources ones, including one by NEC (seriously).

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