Crazy nic issue with solid vs stranded cable??

  1.    11 Oct 2017 #1

    Crazy nic issue with solid vs stranded cable??

    Ugh. So I just pulled apart my keyhole jack/wallplates. Ran between my basement and office (3 floors) a half dozen times. Finally determined it was my cable.

    Let me explain.

    When I wired my house I had limited funds and so used the solid cable for my patch cables in my office as well. They are all perma ran and zip tied so didnít really need pliability.

    No issues until just upgrading to redstone (build 16299)

    I have 2 gigabit nics which I team. Suddenly only 1 is connecting at gigabit. The other only 100mb.

    I figured I had a bad cable end on the 100mb one that coincidentally just reared itís head. I went under the desk and rolled the dice it was the end at the wall.

    Changed it out and still only 100mb. Just my luck so I changed the other end. Still only 100mb!

    At that point I pulled the cable assuming there was a break somewhere somehow.

    I made a new cable out of the solid cat 6 and to my surprise - still 100mb.

    The kicker, if I swap in a stranded patch cable, gigabit no problemo. Swap back to solid - 100mb again.

    Anyone help me figure this? I canít understand it and tbh if it werenít for everything else being solid and me being ocd AF I would just put in the stranded and call it a day.

    Thing is everything else is gigabit solid with no problems. Even the other intel nic in the same pc. Add in the fact with CU it was just working fine and Iím at a loss.

    Anyone able to reason with that? Lol
      My ComputerSystem Spec

  2.    11 Oct 2017 #2

    I'd go for the socket being a bit worn, at a guess the stranded cable's plugs are a tighter fit. Try the "waggle it" test.
      My ComputersSystem Spec

  3.    11 Oct 2017 #3

    A cable like cat5e is stranded to stop cross talka solid cable can suffer from outside noise and cross talk cross talk will reduce the speed
      My ComputerSystem Spec

  4.    11 Oct 2017 #4

    Both good answers and likely the case. Used an entire day mucking around but ultimately went with just changing both nics over to stranded.

    This way I get my gigabit and get my ocd placated.

    Thought I was losing my mind. Thought it was cable in the walls at first lol. Shoulda tested them all before I drywalled but us middle class folk cut corners. Optimism n all that

    Thx for the replies guys <3
      My ComputerSystem Spec

  5. bro67's Avatar
    Posts : 5,274
    Mac OS High Sierra 10.14.3 Beta (18D21c)
       11 Oct 2017 #5

    Stranded cable needs Stranded connectors. You have to use the Keystone Jacks that need to be punched down. I usually use the back of a razor knife when I do them, if it is just a couple of jacks that I may deal with. As for your speeds, you could have a wire loose in the Keystone or the patch cable, could also be a bios setting. While you are at it, get a loopback tester to allow you to check for all wires are in the blades of the keystone and to check your patch cables. Something like this will work.
      My ComputerSystem Spec


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