Having issues with the Netgate SG-3100 connecting to an Ubiquiti EdgeSwitch



  • I have an EdgeSwitch connected to an EdgerouterX. Everything works fine. I recently bought an SG-3100 Negtate box and am going to use it as my router. The EdgerouterX will be replaced with this SG-3100.

    When I swapped out the EdgerouterX for the SG-3100, the the Edgeswitch was not detected. The light on the LAN port ( the one that connects to the switch ) does not light up. I followed the "Getting Started"  https://www.netgate.com/docs/pfsense/sg-3100/getting-started.htmlNetgate guide to configure the SG-3100. I also confirmed that this LAN port works by connecting it to my laptop. It works fine. What else needs to be done to get the EdgeSwitch to work properly?


  • LAYER 8 Netgate

    I don't know that a pfSense forum is going to be the best place to get help with your edgeswitch.

    All 4 LAN ports on the SG-3100 are expecting to be connected to an untagged switch port by default.

    What port are you connecting to?



  • I've tried LAN ports 2 and 3. Both don't connect to the switch


  • LAYER 8 Netgate

    Are you running pfSense 2.4.3 on the SG-3100? Define "Don't connect" - as in no carrier? Is the edgeswitch port hard-set to something other than auto-negotiate?

    Might be seeing some weird auto-mdx issue. Try a good, 8-conductor crossover cable to see.



  • @Derelict:

    Are you running pfSense 2.4.3 on the SG-3100? Define "Don't connect" - as in no carrier? Is the edgeswitch port hard-set to something other than auto-negotiate?

    Might be seeing some weird auto-mdx issue. Try a good, 8-conductor crossover cable to see.

    • Yes I'm running pfSense 2.4.3 on the SG-3100

    • What I mean by "don't connect" is that none of the green led lights on RJ45 jack on the SG-3100 light up. The switch does not work when plugged into the SG-3100 router.

    • The port is configured on auto-negotiate.

    • I've tried a good 8-conductor crossover cable.

    When I try the exact same setup and exact same Ethernet cables with and EdgerouterX router instead of the Netgate SG-3100, the EdgeSwitch works fine. As soon as I replace the EdgerouterX with the SG-3100, the EdgeSwitch no longer works as a switch. Nothing plugged into the switch gets connected the WAN.



  • are you able to ssh into the switch and see if there are any logs/console output wen plugging/unplugging?


  • LAYER 8 Netgate

    Must be some sort of auto-neg problem with that switch. Works fine on everything I have tried. But I don't have one of those. Nobody has reported the same as you are seeing as far as I know.



  • Bottom line: Dark LED=no Layer 2.  No layer 2 the rest doesn't matter. Are the boxes next to each other and separated by a single patch cable or are there are wall cabling in between?  Very disconcerting, more layer-2 issues in the forum than I had expected gone by the way of polio.

    If u use multiple-LAN, something tells me to tell you to plug one LAN port only on the 3100 and see if lights.

    The EdgeSwitch is not a POE-fed device is it? because that would be embarrassing-to-the-max.


  • LAYER 8 Netgate

    Connect the a known-good, 8-conductor patch cable between OPT1 and one of the switch ports (not two of the switch ports as that will create a loop.)

    Does link come up on both?



  • Arghh. So it did end up being the patch cable. The RJ45 jack was not seating properly in the SG-3100, but somehow had no problems in the EdgerouterX. Thank you for taking the time to help fix this obvious yet un-obvious problem.



  • Sammy to user:  Plug in the RJ45 cable, it MUST go in with a SOLID POSITIVE CLICK and no mushiness.


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