CRS520 w/ ConnectX-4 100G

RouterOS General
1

Hello,

I have a Mikrotik CRS520 running RouterOS (16x QSFP28 100G ports) and and Mellanox ConnectX-4 with 2x 100G ports on it, and the two are unable to complete a link. When running mlxlink -d …… I see this:
Troubleshooting Info

Status Opcode : 2
Group Opcode : PHY FW
Recommendation : Negotiation failure

So I’m not sure where to go from here. The Mellanox card is running the latest compatible ethernet firmware.

Any advice would be appreciated.

2

FEC configuration needs to be the same on both sides of the link. Sometimes, auto-negotiation doesn’t work, so you need to set the speed/FEC manually.

Status Opcode 2 - Switches and Gateways / InfiniBand/VPI Switch Systems - NVIDIA Developer Forums