Google gave another presentation about their implementation of Software Defined Networking at the SDN world congress:
Overall, though, “SDN has worked really well – it’s going into all our projects. There have been big dividends from using high-compute devices in the control plane,” stated Wanderer. “We couldn’t have achieved the results we have without SDN. We would have built something else to do this but it wouldn’t have been as effective.”
I can only conclude that this is good news for SDN/Openflow and the networking industree. Google really depends on Openflow and is expecting the industree to come up with carrier-class solutions.