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    Misreported nic link speed?

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    • T
      Tantamount
      last edited by

      Not sure what's happening here -- I recently unplugged an ethernet cable from my pfsense box and re-inserted it and noticed that the link speed rate returned by the nic now shows 2500 instead of 10G.

      My switch however still reports that the link speed is set to 10G FDX.

      The nic hardware: Intel(R) Ethernet Controller I225-V

      2.6.0-RELEASE (amd64)
      built on Mon Jan 31 19:57:53 UTC 2022
      FreeBSD 12.3-STABLE

      Is this a known issue (cosmetic?), or is there a way to force the nic to re-negotiate outside of rebooting?

      Traffic is currently flowing through it okay, although I haven't tried to max out the transfer rate to see if there's really a cap at 2.5

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        The Intel i225 is a 2.5G NIC so that's what I'd expect to see. I would not expect to ever see 10G shown as the link there.

        Steve

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        • T
          Tantamount @stephenw10
          last edited by Tantamount

          @stephenw10 said in Misreported nic link speed?:

          The Intel i225 is a 2.5G NIC so that's what I'd expect to see. I would not expect to ever see 10G shown as the link there.

          Ah, you're right! I must have remembered incorrectly then about seeing 10 on the pfsense home screen.

          I was amazed traffic was flowing at all given that the switch must not support 2.5GbE (QNAP qsw-m408s) and thus had a mismatch.

          However after doing some iperf3 tests I found that if I had pfsense in server mode, and I attempted to send data from a 10GbE system, I'd temp loose communication while it was running. (Oddly switching the client and server resulted in perfectly working 2.5GbE traffic)

          ty!

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Sounds like a possible flow-control issue. If it's actually an issue for you.

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