[ale] IP over USB
Phil Turmel
philip at turmel.org
Mon Sep 13 13:12:58 EDT 2021
I suspect that having to implement autoMDIX for 1G in these adapters,
the manufacturer enables it for lower speeds, too. I use them to
connect 1:1 with all kinds of industrial machinery, and most of that is
still 100M or slower.
I have several of these:
https://www.amazon.com/gp/product/B013G4C8RE
They happen to be fully functional with Linux bridges and vlans--not
always the case in my experience.
On 9/13/21 11:57 AM, DJ-Pfulio via Ale wrote:
> On 9/13/21 11:42 AM, Phil Turmel via Ale wrote:
>>
>> I don't recall seeing any USB3 ethernet adapters that weren't 1G.
>
> I certainly wouldn't buy one today if it wasn't GigE, but ... if the switch isn't GigE, that won't matter ... or if it is some other embedded device with 100 base-TX, then you'll still need a cross-over cable.
>
> A few examples,
> * raspberry pi v2 - 100base-tx
> * HD Homerun Tuners - 100base-tx
>
> So the 100base-tx world isn't gone completely. I think r-pi v3 ( ~240 Mbps peak) and later, follow the GigE standards, but I haven't validated. r-pi v3 claimed GigE, but the USB shared internals prevent actually pushing that amount of data. r-pi v4 CAN do GigE, I understand. I don't have one of those. Just can't figure out a valid use around here that the existing r-pis don't meet already.
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