• Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Search
  • Register
  • Login
Netgate Discussion Forum
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Search
  • Register
  • Login

Issue with LAN interface only transmitting at 100Mbp (Solved)

Scheduled Pinned Locked Moved General pfSense Questions
8 Posts 5 Posters 1.0k Views
Loading More Posts
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • A
    aGeekhere
    last edited by aGeekhere Jan 17, 2023, 11:43 PM Jan 16, 2023, 11:15 PM

    Hi, I have an issue where my pfsense LAN interface is only running at 100Mbps.
    pfSense is showing that the LAN interface is running at 1000baseT <full-duplex,master>
    my switches (i tried a few different ones) also shows a gigabit connection, however when I run iperf3 I only get 100Mbps.

    What I have tried
    Different network cables
    Different switches
    Rebooting
    Manually setting Speed and Duplex

    Before I used this pc for pfsense i ran windows on it and had gigabit speed.

    Hardware
    Dell motherboard with BCM57780 onboard Ethernet
    i7 CPU 860
    8GB RAM

    Not sure what else to try.

    Update fixed mbps to Mbps

    Never Fear, A Geek is Here!

    J J H 3 Replies Last reply Jan 17, 2023, 12:21 AM Reply Quote 0
    • J
      JKnott @aGeekhere
      last edited by JKnott Jan 17, 2023, 12:22 AM Jan 17, 2023, 12:21 AM

      @ageekhere

      100 millibit??? Wow, that is slow! 😉

      First thing to check is your cable. A bad cable can cause a Gb interface to run at 100 Mb. Some devices have LEDs that indicate what speed it's running at.

      PfSense running on Qotom mini PC
      i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
      UniFi AC-Lite access point

      I haven't lost my mind. It's around here...somewhere...

      1 Reply Last reply Reply Quote 0
      • J
        Jarhead @aGeekhere
        last edited by Jan 17, 2023, 12:29 AM

        @ageekhere What kind of NIC?
        If it's a realtek, search this forum since you already tried cables and other things.

        1 Reply Last reply Reply Quote 0
        • H
          hescominsoon @aGeekhere
          last edited by Jan 17, 2023, 12:30 AM

          @ageekhere well pfsense doesn't like those broadcoms for whatever reason. do ou have another machine lying around you can try it on?

          1 Reply Last reply Reply Quote 0
          • A
            aGeekhere
            last edited by Jan 17, 2023, 12:51 AM

            @JKnott Tried changing cables and all LEDs indicate Gb speed.

            @Jarhead Yeah i am thinking of getting a second hand X540 Intel

            @hescominsoon I have used a few different pc's running pfSense and this is the first time I got the 100Mbps issue, I am also thinking it is not liking the broadcom onboard nic.

            Never Fear, A Geek is Here!

            1 Reply Last reply Reply Quote 0
            • S
              stephenw10 Netgate Administrator
              last edited by Jan 17, 2023, 8:52 PM

              You see any log entries from the bge driver? Those NICs are a relatively known quantity at this point. I wouldn't have expected to see an issue there.

              There's definitely no traffic shaping in play?

              A 1 Reply Last reply Jan 17, 2023, 11:42 PM Reply Quote 0
              • A
                aGeekhere @stephenw10
                last edited by Jan 17, 2023, 11:42 PM

                @stephenw10 Thanks there was an old disabled traffic rule in there. I deleted it and the speed was the same, then i reset the states and now that seems to have fixed it, i am getting over 100Mbps now on lan.

                Never Fear, A Geek is Here!

                1 Reply Last reply Reply Quote 1
                • S
                  stephenw10 Netgate Administrator
                  last edited by Jan 18, 2023, 12:47 AM

                  Ah, yes if something was holding open the states that would do it. The states from the tests would have to match it though and they would normally be different each test.

                  Steve

                  1 Reply Last reply Reply Quote 0
                  1 out of 8
                  • First post
                    1/8
                    Last post
                  Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.
                    This community forum collects and processes your personal information.
                    consent.not_received