Am 23.11.2015 um 17:29 schrieb Sven Anders:
> Hello!
>
> I have a problem with my Intel Dual Ethernet controller
> (Intel Corporation Ethernet Controller X710 for 10GbE SFP+ (rev 01)).
> I want to use a direct-attached cable to connect my server with a
> HP switch.
>
> It works ok, if I attach the cable before booting/starting the server.
> The "ip link" command show "UP,LOWER_UP". Everything is ok.
>
> But, if I attach the cable after booting the server, the connection is
> "DOWN" and will only come up, if I run an "ethtool -t eth2" test on it.
> A single "ethtool -r eth2" does not help.
>
> I see the same behavior, if I connect the two ports of the Intel card
> directly, so the HP switch does not cause it.
>
> I tried the following Linux kernels:
> - 4.1.12 (with i40e in version 1.3.2)
> - 4.3 (with i40e in version 1.3.9)
>
>> ethtool -i eth2
> driver: i40e
> version: 1.3.9-k
> firmware-version: f4.22.27454 a1.1 n4.25 e143f
> bus-info: 0000:03:00.0
> supports-statistics: yes
> supports-test: yes
> supports-eeprom-access: yes
> supports-register-dump: yes
> supports-priv-flags: yes
>
> The cable I use is:
> INTEL(R) ETHERNET SFP+ TWINAXIAL CABLE, XDACBL3M
> Version: G45737-003 Date: 09/02/2015
>
> I this error known or any ideas, what causes it?!
Hello!
To answer by own question...
I tried the Intel driver (1.3.47) and had the same problems.
Then I tried Windows 2012R2 and it worked. So the hardware wasn't
faulty.
As a last resort I tried the newest firmware and IT WORKED!
(New firmware-version: f4.40.35115 a1.4 n4.53 e1dc0 )
Sorry for the noise, but I didn't expect the firmware causing this.
Regards
Sven Anders
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