Mikrotik 100G port splitted into 4

RouterOS General
1

I have a CRS518-16XS-2XQ-RM and Intel E810 CAM2 NIC,

But QSFP28 port is split into 4, which causes the highest speed I can achieve is 10G, how can I “merge” them together so I can actually achieve 100G?

When I turn auto-negotiation off to 10G, the link will be up, if I change it to 100G, the NIC link will be down.

I am connecting them with a 100G DAC.

I have done quite a lot of searches, but no luck. What I came across are all unanswered questions, I hope someone can finally answer this once and for all.

Disabling QSFP 2-2, 2-3 , 2-4 don’t work as well, completely clueless…
Screenshot from 2023-10-09 06-14-13.png

2

maybe this can help

https://wiki.mikrotik.com/wiki/MikroTik_wired_interface_compatibility#QSFP+_interface_compatibility_with_QSFP+_to_SFP+_breakout_cables

3

You mean turning the auto-negotiation off on the first interface and setting it at 100G right?

The moment I did that, the link dropped
Screenshot from 2023-10-09 17-51-44.png
Screenshot from 2023-10-09 17-50-34.png