On 2020-02-10 21:36, Patrick O'Callaghan wrote:
> On Mon, 2020-02-10 at 20:40 +0800, Ed Greshko wrote:
>> On 2020-02-10 20:14, Patrick O'Callaghan wrote:
>>> So I changed that to turn autoneg on and speed to 1000, and rebooted.
>>> The system came up with no network, so I reverted the change. Clearly
>>> that isn't the right way to do it.
>>>
>>> Recommendations are welcome.
>> Well, I use network manager and my network-script for enp2s0 only has
>>
>> ETHTOOL_OPTS="autoneg on"
>>
>> Could be that if you have autoneg on and then specify other stuff that should be taken
>> care of by the autoneg you cause issues.
> I tried that (note that I've never touched that file before now so I
> don't know where the settings originally came from) and now it does
> come up, but is still running at 100Mbps. I rebooted both my box and
> the router, but no difference. Both ends definitely support 1000Mbps
> but my end now shows:
>
> $ sudo ethtool enp4s0
> Settings for enp4s0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Supported pause frame use: Symmetric Receive-only
> Supports auto-negotiation: Yes
> Supported FEC modes: Not reported
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Advertised pause frame use: Symmetric Receive-only
> Advertised auto-negotiation: Yes <---------------------*
> Advertised FEC modes: Not reported
> Link partner advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Link partner advertised pause frame use: Symmetric Receive-only
> Link partner advertised auto-negotiation: Yes
> Link partner advertised FEC modes: Not reported
> Speed: 100Mb/s <---------------------*
> Duplex: Full
> Port: MII
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: on <---------------------*
> Supports Wake-on: pumbg
> Wake-on: d
> Current message level: 0x00000033 (51)
> drv probe ifdown ifup
> Link detected: yes
>
The key is....
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
The other side is telling that it only supports 100Mb/s
--
The key to getting good answers is to ask good questions.
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