Solution:
The XGS3-24042 can not support SFP type auto-detection. In such circumstance, we would suggest to pre-setup the port(s) that is going to attach 100Base-FX SFP transceiver in the CLI, please refer to example as below.
Example:
Set Port 21 ~ 24 that support 100Base-FX SFP transceiver.
XGS3-24042(config)#interface ethernet 1/0/21-24 |