Hi Qazik,
The optical module model is SFP-FC8G-SW. Look up the product document. It is found that this optical module supports FC interfaces for server interconnection. To allow a switch interface to work in FC mode, a special configuration is required.
# Set the rate of FC 1/0/1 to 8000 Mbit/s in non-auto-negotiation mode.
<HUAWEI> system-view
[~HUAWEI] port mode fc 10ge 1/0/1
This operation will cause all the other configurations on the port to be lost. Continue? [Y/N]:y
[*HUAWEI] commit
[~HUAWEI] interface fc 1/0/1
[~HUAWEI-FC1/0/1] negotiation disable
[*HUAWEI-FC1/0/1] speed 8000