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    PPPOE WAN Dropping Randomly

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    • C
      Corvo2001
      last edited by

      Hello all,

      ISP: BT
      Country: Scotland
      PFSense: 2.7.0

      For the past few days an issue has been occuring where my WAN interface will go down completely for around 60-90 seconds, before coming back online on it's own. This happens completely randomly, might not happen for 7 or 8 hours, might happen multiple times in the space of 10 minutes. I have changed nothing, my ISP, package, modemn, router pc, network switches, cables are all the same as they always have been and it has worked for years like this.

      PFSense is running on an old PC I have, with an Intel nic to a switch for my lan. The setup is fibre to the house, modemn, ethernet cable from the modemn to the WAN port on the NIC in the router PC, then ethernet cable to switch for my LAN. I've rebuilt my PFSense software setup from scratch, setting up all my interfaces and firewall rules from scratch after resetting PFSense to factory defaults. But still the issue persists, I'm at a complete loss...

      I've managed to capture the system logs from start to finish of the issue happening, but I don't understand enough to figure out what end this is happening on. (I've tried to remove IP's and any other sensitive information with REDACTED)

      systemlogs10.11.2024.txt

      If there are any other tests, or information I can provide to assist, please let me know

      Kind Regards,
      Mylo

      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by 

        Nov 10 22:39:03 	check_reload_status 	408 	Linkup starting igb0
Nov 10 22:39:03 	kernel 		igb0: link state changed to DOWN

        That's not a PPPoE problem. The NIC is actually losing link. So I'd guess a failing modem, cable or NIC.

        As a test try swapping WAN to a different NIC and see if the fault follows it or remains on igb0.

        Steve

        C 2 Replies Last reply Reply Quote 1
        • C
          Corvo2001 @stephenw10
          last edited by

          @stephenw10

          Hi Setephen,

          Thank you for the insite,
          When I rebuilt my setup software wise, I switched which NIC the WAN is in, so previously WAN and LAN were on the top nic, and WAP and DMZ were on the bottom, now it's reversed. The issue is ongoing so I assume the NIC's are fine.

          I have ordered a new ethernet cable to run from the modemn to the NIC so I'll see if that's the issue...
          If not, it'll have to be the modemn in that case

          I'll keep the post updated once the cable arives

          Thanks again

          1 Reply Last reply Reply Quote 0
          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Can you check the uptime on the modem? Maybe it's rebooting.

            C 1 Reply Last reply Reply Quote 0
            • C
              Corvo2001 @stephenw10
              last edited by

              @stephenw10

              I made a mistake in my original post, I didn't know the difference then but I do now.
              I don't have a modem, as we have FTTP, so we have an ONT.
              I assume there is no web interface for a OTP

              I've checked the lights on the modem and it all looks fine, I'll try and check when it starts going dropping to see what status lights it gives off

              1 Reply Last reply Reply Quote 0
              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Hmm, maybe not. At least not any user interface. BT can probably see if it reboots. Unfortunately fiber still has reached me here. 🙄

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                • C
                  Corvo2001 @stephenw10
                  last edited by

                  @stephenw10

                  Well, we're at 48 hours without an incident after switching the ethernet cable that connects the ONT to the router, so it's pretty safe to say you were correct saying it was hardware

                  Thank you for your support, honestly I wouldn't have guessed a damaged cable would cause something so intermittent and short

                  Kind Regards,
                  Mylo

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