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    4200 - LAN port flapping

    Scheduled Pinned Locked Moved General pfSense Questions
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    • I
      i298X9wY1jGQ
      last edited by

      UPDATE

      I was able to configure PORT3 as the new LAN port on my router. It's negotiating correctly at 1000baseT <full-duplex>.

      However, PORT2LAN is still negotiating at 100baseTX <full-duplex>. Still not sure why and how this can be fixed.

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      • T
        tgl @i298X9wY1jGQ
        last edited by

        @i298X9wY1jGQ Running at 100M is typically a sign that one wire-pair within the ethernet cable is not connecting. If you already replaced the cable (and are sure the replacement is good), the next most likely theory is a dirty connector pin within the port. Try cleaning the pins. If that doesn't help, it's a faulty port.

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        • I
          i298X9wY1jGQ @tgl
          last edited by

          @tgl said in 4200 - LAN port flapping:

          @i298X9wY1jGQ Running at 100M is typically a sign that one wire-pair within the ethernet cable is not connecting. If you already replaced the cable (and are sure the replacement is good), the next most likely theory is a dirty connector pin within the port. Try cleaning the pins. If that doesn't help, it's a faulty port.

          Yeah, tried cleaning the pins even though they looked very clean since this is a brand new unit. However, after rebooting the unit, the port stays active but only at 100M. I'm not sure if this is a faulty port or something funky going on with the software.

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Do you have the port set to a specific speed? On the 4200 it should pretty much always be set to 'default'.

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            • I
              i298X9wY1jGQ @stephenw10
              last edited by

              @stephenw10 said in 4200 - LAN port flapping:

              Do you have the port set to a specific speed? On the 4200 it should pretty much always be set to 'default'.

              I tried forcing my laptop to use 1G full-duplex but PORT 2 still auto negotiates at 100M. Then, I tried forcing PORT 2 to negotiate at 1G and it is now showing "no carrier" and is completely off (no activity lights). After making the change to negotiate at a specific speed always makes the port unresponsive and requires a reboot for it to become active again.

              I'm on my third cable now and can probably rule out any issues with the cables I'm using.

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              • I
                i298X9wY1jGQ
                last edited by

                Looking at the 4200 documentation, there's no section for the RJ-45 LED activity lights so I'm not sure how to interpret the colors. I see other models have documentation going over the activity lights. Examples are here and here.

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                • T
                  tgl @i298X9wY1jGQ
                  last edited by

                  @i298X9wY1jGQ said in 4200 - LAN port flapping:

                  Looking at the 4200 documentation, there's no section for the RJ-45 LED activity lights so I'm not sure how to interpret the colors.

                  Yeah, that seems like a documentation oversight. However, "ifconfig" in the shell will tell you the truth about port speeds. On my 4200 I see

                  media: Ethernet autoselect (2500Base-T <full-duplex>)
                  ...
                  media: Ethernet autoselect (1000baseT <full-duplex>)                                                                        
                  

                  on my two active ports, and those are both right.

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                  • I
                    i298X9wY1jGQ @tgl
                    last edited by

                    @tgl said in 4200 - LAN port flapping:

                    @i298X9wY1jGQ said in 4200 - LAN port flapping:

                    Looking at the 4200 documentation, there's no section for the RJ-45 LED activity lights so I'm not sure how to interpret the colors.

                    Yeah, that seems like a documentation oversight. However, "ifconfig" in the shell will tell you the truth about port speeds. On my 4200 I see

                    media: Ethernet autoselect (2500Base-T <full-duplex>)
                    ...
                    media: Ethernet autoselect (1000baseT <full-duplex>)                                                                        
                    

                    on my two active ports, and those are both right.

                    I ended up reinstalling pfSense fresh. Confirmed in the shell that PORT2 was still showing as 100baseTX <full-duplex>. Not really sure what else to do here.

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                    • T
                      tgl @i298X9wY1jGQ
                      last edited by

                      @i298X9wY1jGQ said in 4200 - LAN port flapping:

                      Not really sure what else to do here.

                      If this is a new unit, it sounds like RMA time. I think you've covered every possibility other than faulty port hardware.

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                      • I
                        i298X9wY1jGQ @tgl
                        last edited by

                        @tgl said in 4200 - LAN port flapping:

                        @i298X9wY1jGQ said in 4200 - LAN port flapping:

                        Not really sure what else to do here.

                        If this is a new unit, it sounds like RMA time. I think you've covered every possibility other than faulty port hardware.

                        Yeah, the rep I had been working with initiated an RMA. I was really hoping I would not have to do that but it is what it is.

                        Thanks all for the help!

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                        • stephenw10S
                          stephenw10 Netgate Administrator
                          last edited by

                          As a test try just linking two ports together directly and then check the link state at the CLI with ifconfig -v.

                          There shouldn't be an issue linking at 1G. You may have a bad port.

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