I have several X710-DA2 cards in the ESXi Server. When I leave the port speed of that cars as it is everything works fine. When I try to change the speed to 10GBit I get an error message: "Forcing 1000Mbps or faster may not be supported on this network device, please use auto-negotiation instead"
After that all X710 ports go offline and I cannot be activated again. The link is down and the vmnic has a red cross.
The only way to get it working again is to Restore the ESXi configuration backup that was made before the change.
Driver/Firmware is the following:
[root@localhost:~] ethtool -i vmnic4
firmware-version: f4.22.27454 a1.2 n4.25 e143f