Ethernet over USB 3

Discussion in 'Mac Pro' started by rueyloon, Aug 16, 2017.

  1. rueyloon macrumors regular

    Joined:
    Sep 24, 2013
    #1
    Hello

    hi, it is possible to create an ethernet over USB 3 network?

    thanks.
     
  2. Raz0rEdge macrumors member

    Raz0rEdge

    Joined:
    Jun 13, 2016
    Location:
    MA
    #2
    For all practical purposes, without a USB dongle. no.
     
  3. rueyloon thread starter macrumors regular

    Joined:
    Sep 24, 2013
    #3
    Hmm interesting, so what's the special sauce that apple made it possible over firewire and thunderbolt, but not under USB?
     
  4. ApfelKuchen macrumors 68030

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #4
    As far as I know, you can still use IP over Thunderbolt with TB3 - connect two Macs with a USB-C cable, select Thunderbolt Bridge in System Preferences, enable IP... https://support.apple.com/kb/PH25217 9to5Mac has a video demonstrating it with USB-C-equipped MBPs.

    I think the original question was a bit unclear. Personally, I wouldn't consider directly connecting two computers to be "creating a network."
     
  5. Raz0rEdge macrumors member

    Raz0rEdge

    Joined:
    Jun 13, 2016
    Location:
    MA
    #5
    Correct, you can do IP over USB as long as you are hard connecting two devices together. For example, you would connect a phone to your Mac and use it as a IP tether to get to the Internet...

    But if you wanted to plug in regular Ethernet cable to a Mac, that's a different story. I used a Ethernet-to-TB dongle that allowed me to plug in a Ethernet cable. In that case this no different than the various dongles out there that to USB-C to HDMI/DVI/SD or whatever..

    Regards
     
  6. Erdbeertorte macrumors demi-goddess

    Joined:
    May 20, 2015
    #6
    Firewire and Thunderbolt are directly connected to PCIe (it's like an external PCIe slot) and can be used for almost anything, USB can only "emulate" most ports with an adapter/dock/hub.
    Now with 3.1 I think Displayport is the only native supported standard.
     
  7. rueyloon thread starter macrumors regular

    Joined:
    Sep 24, 2013
    #7
    It's just for simple file sharing at home. A network over USB3 would be faster than over ethernet.
    --- Post Merged, Aug 16, 2017 ---
    ok, probably invest in a cable to try it out. Hope to get faster speed than ethernet for simple file sharing at home.
     
  8. ActionableMango, Aug 16, 2017
    Last edited: Aug 21, 2017

    ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #8
    USB ports are, generally speaking, designed to act as either a host (computer) or a device (printer, hard drive, etc)*. There is a different shape connector at each end of a USB cable to ensure that hosts only connect to devices and that devices only connect to hosts. A host USB port is not designed to work with another host USB port. This is why you don't see USB to USB networks.

    If both computers are Mac Pros, you can connect two Ethernet cables and use NIC bonding to double your bandwidth.



    * There are some common exceptions to this such as a USB OTG port on a smartphone. And those can actually work as host, device, or peer to peer, but that is a different context entirely.
     
  9. monkeybagel macrumors 65816

    Joined:
    Jul 24, 2011
    Location:
    United States
    #9
    Also worth noting that the 1GbE Standard is auto MDX, so no concerns are needed for a straight vs crossover cable when connecting NIC to NIC.
     

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