Tag Archives: OpenFlow

OpenFlow and software defined networks are here. Now what?

I just listened to a talk from Berkeley professor Scott Shenker yesterday on youtube http://www.youtube.com/watch?v=WVs7Pc99S7w that gave an excellent breakdown of SDN and he spoke of the need of the Network Operating System before SDN’s can become a reality.

When I think about it, I’m rather amazed that we haven’t created an abstraction for the network. His talk speaks about how relatively easily we’ve done this at layer 2 but how difficult it is to do at higher layers due to the non-modular design of the network stack. Applications shouldn’t be making calls to the network address but rather to the network service.

Interesting stuff. OpenFlow is a step in the right direction to creating the “BIOS” that we need. I’m especially happy that Google is at the bleeding edge of this in a production network.

Gigaom

Earlier this month I spent a few days at the Open Networking Summit in Santa Clara, Calif. and walked away certain I watched history being made in the networking industry. The emergence of the OpenFlow standard and software defined networking have been on my radar for a while, but at this event, the future coalesced.

The secret is out on SDN.

I’ve been following SDN and OpenFlow almost since its earliest days. I’ve been lucky enough to know Martin Casado since before Nicira knew what it was going to build and Guido Appenzeller of Big Switch of SDN since his days at Voltage Security. I attended the first Open Networking Summit back in October, but was floored by the scale of the April event. Attendance was up over 3x, and people from all corners of the ecosystem were there. Clearly the secret is out and it’s evident that the networking…

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