Two years ago, Mark Zuckerberg and company turned the hardware world on its head when they launched the Open Compute Project, an effort to improve every aspect of the modern data center and share the results with the world at large. They began by “open sourcing” fresh designs for computer servers and power systems and cooling equipment. Then they did the same with hardware that stores massive amounts of digital data. Then they remade the racks that hold all these machines. And now it’s time for the networking gear.