Ethernet over USB 3

rueyloon

macrumors regular
Original poster
Sep 24, 2013
180
11
Hello

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

thanks.
 

ApfelKuchen

macrumors 68040
Aug 28, 2012
3,503
2,147
Between the coasts
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."
 

Raz0rEdge

macrumors member
Jun 13, 2016
36
7
MA
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
 

Erdbeertorte

Suspended
May 20, 2015
1,180
500
Hmm interesting, so what's the special sauce that apple made it possible over firewire and thunderbolt, but not under USB?
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.
 

rueyloon

macrumors regular
Original poster
Sep 24, 2013
180
11
I think the original question was a bit unclear. Personally, I wouldn't consider directly connecting two computers to be "creating a network."
It's just for simple file sharing at home. A network over USB3 would be faster than over ethernet.
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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
ok, probably invest in a cable to try it out. Hope to get faster speed than ethernet for simple file sharing at home.
 

ActionableMango

macrumors G3
Sep 21, 2010
9,510
6,750
Hmm interesting, so what's the special sauce that apple made it possible over firewire and thunderbolt, but not under USB?
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.
 
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