This document describes describes the progress of the Open Platform for NFV (OPNFV) project on virtual switch performance "VSPERF". That project reuses the BMWG framework and specifications to benchmark virtual switches implemented in general-purpose hardware. Some differences with the benchmarking of specialized HW platforms are identified and they may become work items for BMWG in the future. It's a well written and clear document, but I have reservations about it being published as an RFC, and I cannot find coverage for it in the WG charter. I also have concerns that parts of the methodology used by OPNFV break the BMWG principles, especially repeatability and 'black-box', and this is not clear enough articulated in the document. As I was assigned both OPS-DIR and Gen-ART reviews for this document, I detailed the concerns in my Gen-ART review, they seem to belong better there. From an OPS-DIR perspective this document has no issues. If the concerns in section 6 are addressed and caution is taken to isolate the SUTs and benchmarking environments from the Internet or operational intranets, there is no operational impact. If approved it would be a useful tool for operators to get some information about how benchmarking of OPNFV project products are being designed.