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?!
Regards
Sven Anders
--
Sven Anders <and...@anduras.de> () UTF-8 Ribbon Campaign
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