Is there a command that will tell us why one of the ports on our 516-CCAT adapter will not link to a switch? Or how to detect if there is an error on the port or card?

I have a dual port adapter, and one of the ports link light never turns on when connected to a Mellanox 100G switch using an approved Mellanox copper 100G cable.

I tried "mlxlink -d " and State says “Polling” and never changes, the other port goes immediately to “Active”.

Thanks for any feedback/ideas/…

Eric

Hello,

To check if the configuration of the adapter, cabling, and switch represent a supported configuration, please check the firmware release notes for the adapter/firmware you are using. The latest firmware for the MCX516A-CCAT is v16.31.1014:

https://docs.mellanox.com/display/ConnectX5Firmwarev16311014/Firmware+Compatible+Products

For basic physical troubleshooting guidance, please review the ConnectX-5 User Manual:

https://docs.mellanox.com/display/ConnectX5EN/Troubleshooting

For more in-depth troubleshooting, please review the MFT User Manual:

https://docs.mellanox.com/display/MFT4170/NVIDIA+Firmware+Tools+(MFT)+v4.17.0+Documentation

In particular, the sections regarding “mlxlink” should provide guidance on checking link parameters on the adapter and cabling.

The MLNX_OFED User Manual also contains many troubleshooting measures as well:

https://docs.mellanox.com/display/MLNXOFEDv541030/Troubleshooting

-Nvidia Network Support