We already got working card with same chip (Selecom) and decided to purchase another one - but Intel branded XL710-QDA2.
After deploying and upgrading firmware and driver to the latests versions, we found that 40gbit/s link is up and icmp (pings) packets go perfectly, but there is no ability to set up any TCP connection.
Ethtool shows a lot of rx_crc_errors on this interface.
We've tested it with two brand new Intel cables and got the same result.
What can be reason of this?
i40e version 1.5.18
nvm version 5.0.4