Re: Fortilink (switch - fortigate) over media converter not working ...
I just had the same problem. Two FortiGates 60F in HA connected to two FSW124E-FPOE for redundancy and this works.
Then when we connect a switch in another room through a fiber (tested) and through media converters, The port on the main room goes up but the switch never connects. If we move that switch to the main room and connect it using a network cable, then the switch comes up no problem. We move it back to the other room and connect it to the fiber again, nothing.. niet.. nada
We will try a different model of media converter as this setup has already been done in another building by another cabling company and everything worked.