Have you checked the latency to the speedtest servers? Have you captured the speedtest with a capture tool (wireshark) and looked for retransmissions?
Even though it has largely not a problem anymore, latency can affect TCP/IP performance. Also, even tiny packet loss can cause problems in obtaining full speed. Is their iperf server perhaps running UDP and yours running TCP? On Fri, Nov 15, 2019 at 5:12 PM Matt Hoppes < mattli...@rivervalleyinternet.net> wrote: > I’m at a loss on this one. > > We have a circuit with a fiber provider that aggregate at prime time can > hit 800mbps download. > > However, with a high end laptop connected directly to the fiber NID we > can’t get more than 200-250mbps sustained download to any speed test ( > speedtest.net, fast.com, speed.ui.com) and it just starts slowly going > down. Upload is around 800mbps. > > Same laptop on a Level3 circuit will easily hit gigabit in both > directions. > > We setup an iperf server and see the same thing. The provider brings an > iperf server in and they can hit the proper speeds going to an off net > iperf server they have. Provider speed tests to our iperf server and gets > the slower speeds. > > They say because they can’t find an issue when using their iperf server > there is no issue. > > I don’t even know what to suggest at this point. > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- - Forrest
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
