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dbehremo's avatar
dbehremo
Tutor
Mar 08, 2017
Solved

Wired Ethernet line to pc is running at 100mbps instead of 1gb

I just connected my pc via ethernet cable (Cat5e) to the nighthawk r7000.  It blinks red and is running at 100mbps, instead of 1 gb.   The troubleshooting steps I have already done are as follows. ...
Troubleshooting
  • dbehremo's avatar
    dbehremo
    Mar 09, 2017

    Okay so I purchased a ethernet cable tester, turns out the cable was indeed bad.  I went ahead and created a new cable, and it does have a gigabit connection. 

    Lesson learned dont trust your laptops lan port, try more than on device, and most likely it is the cable.

dbehremo's avatar
dbehremo
Tutor
Mar 08, 2017
I tried to look for one but didn't see anywhere that I could change the speeds.
  • William10a's avatar
    William10a
    Master
    Mar 08, 2017

    I remember of a past posting that a 10/100mb lan had problems with the a netgear's  1gb port they could only get a very low speed on that lan feed. It was a older lan card the poster had but the 1 gb switch fixed the issue I can see a possible that new and old want to fight the switch seem to stop them. I understand that a gb lan port on a older computer should be the same standard as today but some how they do not also see eye to eye and go to war.

    • dbehremo's avatar
      dbehremo
      Tutor
      Mar 08, 2017

      The NIC card that is on the motherboard is only 3 years old tops.

      • StephenB's avatar
        StephenB
        Guru - Experienced User
        Mar 08, 2017
        dbehremo wrote:

        The NIC card that is on the motherboard is only 3 years old tops.

        The other poster had a different issue from yours anyway.  He was negotiating the right link speed, but wasn't getting good performance. 

  • StephenB's avatar
    StephenB
    Guru - Experienced User
    Mar 08, 2017

    If you have another ethernet cable, then I suggest you try that.  Though I suspect it will behave the same way (based on the other tests you've run) it's still worth a try.

     

    dbehremo wrote:
    I tried to look for one but didn't see anywhere that I could change the speeds.

    Try selecting the adapter in the windows device manager. With Intel NICs there often is a "Speed & Duplex" settings included in the "advanced" tab of the NIC properties.

     

    If you see a setting for "energy efficient ethernet" (or similar wording) try turning it off, and see if there is any difference.

    • dbehremo's avatar
      dbehremo
      Tutor
      Mar 08, 2017

      Okay so I have found it

      It is a intel r I218-V adapter

      It is under advanced

      I found 2 interesting things one is gigabit master slave mode, which is set to auto detect. And Speed and duplex which is set to auto negoitaite 

      I do not know what that first one is but ill try chaning the second one and see if anything happens

       

      • StephenB's avatar
        StephenB
        Guru - Experienced User
        Mar 08, 2017

        I don't think it'll matter, but the manual setting for "gigabit master slave mode" would be slave.  If it makes no difference, set it back to auto-detect.