At launch, FD.io’s VPP technology could route/switch at half a Terabit per second at multimillion fib entry scales. Close examination of the bottlenecks revealed that it was being limited by the ability of the PCI bus to deliver packets from the NIC to the CPU. VPP had headroom to do more, but the PCI bus bandwidth imposed limitations.
Today we are delighted to announce that limitation has moved further out. The increased PCI bandwidth in the Intel® Xeon® Processor Scalable family have doubled the amount of traffic the PCI bus can deliver to the CPU, and VPP has risen to the occasion without the need of new software optimizations. This proves what we have long suspected: VPP can route/switch in software at multi-million fib entry scale as much traffic as the PCI bus can throw at it.
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