Last year, the Open Network Forum (ONF) officially decided to lay OpenFlow (OF) to rest. But did this also lay to rest any hope of SDN being a truly programmable standard for network operations? Not according to the ONFs VP marketing, Tom Sloane, who felt P4 would take OpenFlow to the next step: “P4 is poised to usher in the next wave: true programmability. The P4 language makes the chip layer programmable so you can do dynamic things to packets.”2
So why the change? And does P4 really have a better chance of success than its predecessor (OF)?
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