Can't set speed of X1 int on FGT200F

[1ryan1]

I was testing my transceivers and I tried to get the transceiver to step down from 10 to 1g on x1 of my FGT200F. No matter what I set it to in the GUI in FMG, it always resorts back to auto. I tried changing it on the FGT200F directly, but now every time I try to sync via FMG it always fails and says conflict. I tried changing my interface back to auto, but FMG doesn't like that. Any ideas how I can fix?

FGT01 (x1) # show
config system interface
edit "x1"
set vdom xyz
set allowaccess ping
set type physical
set snmp-index 11
set speed auto
next
end

If I try unset speed in the FGT CLI, it "comes back" in the running config. If I exit the interface then go back to view it.

Start installing
FGT01 $ config global
FGT01 (global) $ config system interface
FGT01 (interface) $ edit "x1"
FGT01 (x1) $ unset speed
FGT01 (x1) $ next
FGT01 (interface) $ end
FGT01 (global) $ end

[ebilcari]

As far as I know you can't change the speed of SFP+ from 10Gbps to 1Gbps on a transceiver and this is a limitation for all vendors. The port itself may support different transceiver 1 or 10Gbps.

[esalija]

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Configuring-SFP-interface-on-10-GE-SFP-and...

[FarinaAhmed]

To address the issue:

1. Verify FMG configuration.
2. Directly configure speed on the FGT200F using CLI.
3. Check interface status.
4. Restart the interface.
5. Sync with FMG.