I have steadily increasing Rx FCS Errors, and to a lesser extent Rx MAC Errors with both QSFP+ ports on an otherwise new CRS354-48G-4S+2Q+ running on swos 2.18. Both ports are running 40gbps full duplex 1500MTU to a Mellanox ConnectX-3 Pro CX324A running ESXi 7U3. Swapping out cables with known good cables did not help. Further, the Mellanox card is not reporting any errors using esxcli network nic stats get -n <interfaces> .
What else can I do to troubleshoot? Is this a known problem with these switches? Further, I've tested the 10gbps SFP+ ports and they did not have the same problem.