@stephenw10 said in Windstream fiber -> Adtran 411 -> PfSense slow upload speed:
The WAN flapping seems like a different issue to the upload speed throttling.
I would try swapping the WAN and LAN NICs to see if it's something to one of them. Has the WAN always flapped like that?
Apologies for the delay in response. The WAN has only ever flapped when I used the Asrock NUC BOX-1360P/D5 Intel 2.5 Gbps NICs to connect to my fiber ONT box. It did not work with the Aruba switch either. The WAN continued to flap up and down repeatedly and I was not getting the full upload speeds.
I ended up replacing the Asrock NUC BOX-1360P/D5 PC with another PC with a PCIe express slot and put in an Intel X710-T2L card. I reran the connection speed test with the EdgeSwitch and finally got synchronous upload and download speeds of ~950 Mbps. Inspecting the PFSense interface logs, it no longer reported "In/out errors" when the test ran. In addition, the WAN flapping has stopped, and it's been online for more than 10 days.
I also tried the Intel X710-T2L card with the new Aruba switch, and it is getting synchronous upload and download speeds of ~950 Mbps. Either my Asrock NUC BOX-1360P/D5 had a bad NIC, or something was going on, but I did not want to deal with the problems anymore.
Thank you for the assistance and guidance you provided me as I tried to troubleshoot this problem @stephenw10