This article describes the speed option changes between versions.
Scope
FortiGate-100F/101F.
Solution
After upgrading to versions v7.2.8, v7.4.2 and v7.4.4, the only available speed option for the WAN interfaces is ‘auto’ because of a design change. The speed options look like below:
FG101F (wan1) # set speed auto <----- Automatically adjust speed.
As this change causes issues for environments that require manually set the speed, the following speed settings will be available in the upcoming versions:
FG101F# set speed auto Automatically adjust speed. 10full 10M full-duplex. 10half 10M half-duplex. 100full 100M full-duplex. 100half 100M half-duplex. 1000full 1000M full-duplex.
The speed settings will be available in v7.2.9, v7.4.5 and v7.6.0. In case a specific speed must be used instead of ‘auto’ there is no workaround apart from upgrading in the mentioned versions.