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dbehremo's avatar
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.

 

When connecting said PC directly into modem, the connection is 1gb.

 

Connecting the same Cat5e cable from the same port within the r7000 to my laptop, I also get a 1gb connection.

 

I also tried all ports on the back of the r7000, same results, 100mbps.

 

So my guess is there is some communication issue between the router and the computer.

any help would be appreciated.

 

  • 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.

30 Replies

  • Do you what the max rated speed of the pc's lan port is?

    You said a laptop you have gets the 1 gb connect if connected the routers lan ports so it has to be the lan port on the pc.

    It's is possible that the lan port is only a 10/100 mb port or a bad lan cable.

    Sound like th pc may have 10/100 mb port is this pc a desk top or laptop?

     If this is the case you will only get 100 mb max?

    A desktop you could upgrade the lan card or add a 1 gb lan card a laptop mey be a usb to 1 gb lan adaptor 

     

  • The pc gets a 1gb connection if I have it directly wired to one of the ports on the modem.
    The pc is a desktop.
    I have ran a gigabit network on it with my previous router/modem combo.
    I tested the same cable with the laptop and it works fine.
    • William10a's avatar
      William10a
      Master

      Have you tried to reset the lan port on the computer to tell the computer about the new router?

  • When plugging it in, the pc asked me to allow it to connect. After that I disabled the LAN port and enabled it. Tried to update drivers, however drivers were up to date. Power cycled the modem, computer and router.
    • William10a's avatar
      William10a
      Master

      A strange test do you have 1 gb switch to place between the router and the computer's lan port to see if the 1 gb speed returns reminds of another there were speed issues the switch fixed it.

      • dbehremo's avatar
        dbehremo
        Tutor

        I was able to borrow a gigabit switch. I placed the computer into the switch and the router. The computer is still showing 100 connection while the router has the white light blinking instead of red where the switch is placed in.

  • I do not have a switch at this time. I did plan on purchasing one in the near future.
    • William10a's avatar
      William10a
      Master

      I hope it works if it does I just acts like a buffer in way I guess but it you shoud not need it.

      • TheEther's avatar
        TheEther
        Guru

        Does the network driver on the PC have a setting to control the speed of the port?  If yes, try setting it to Auto.  I've read of instances (not specific to Netgear) where forcing the speed to 1 Gigabit can be counterproductive.

  • I tried to look for one but didn't see anywhere that I could change the speeds.
    • William10a's avatar
      William10a
      Master

      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

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

    • StephenB's avatar
      StephenB
      Guru - Experienced User

      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

        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