Fortigate 900D Interface Speed/Duplex Issue
I don't know about this problem so I share it.
I didn't find it in the release notes.
I'm Fortigate 900D used v5.2.5
Recently, fortiOS v5.6.7 upgrade was in progress.
In v5.2.5, I set Speed 1000Full Static on the interface.
But, in v5.6.7 the setting is gone.
So I looked at the interface, formatted it, and just updated the OS again.
The problem is that 1000Full is not set
10000 auto appears in the setting conditions.(port25 10/100/1000 port)
It may be an OS bug, but I would like to know how to deal with this symptom.
Temporarily set 100Full between network device and Fortigate.