Re: Auto-negotiation - Out of business

[Francesco Giudici <fgiudici redhat com>]

On 29/11/2016 09:20, Jetchko Jekov wrote:
> On Mon, Nov 28, 2016 at 7:05 PM poma <pomidorabelisima gmail com
> <mailto:pomidorabelisima gmail com>> wrote:
>
>
>     fg/c-e-ethernet-link2
>
>     # egrep duplex\|speed /etc/NetworkManager/system-connections/enp3s0
>     duplex=half
>     speed=1000
>
>     # nmcli -f 802-3-ethernet.duplex,802-3-ethernet.speed connection
>     show enp3s0
>     802-3-ethernet.duplex:                  half
>     802-3-ethernet.speed:                   1000
>
>     # ethtool enp3s0 | egrep -i speed\|duplex
>             Speed: 1000Mb/s
>             Duplex: Full
>
>
>     It the difference expected?
>
>
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>
>
> I would say yes. Half duplex setting is invalid for gigabit network speed.

Yeah, I think so. I should also have got a warning from NM in your
journal logs stating that configuring the 1000Mb/Half failed (search for
"set-link").
Thanks
Francesco