Technical Tip: Fixing missing syntax for HA reserved management interfaces

[DPadula]

Description	This article describes how to set the mgmt interface under 'config ha-mgmt-interface' in case the mgmt interface is not an option available.
Scope	FortiGate v7.0.x and above.
Solution	to set up the mgmt interface as a reserved management interface under HA configuration when it does not show up as a command option: FG100F-1 # config system ha FG100F-1 (ha) # set ha-direct enable FG100F-1 (ha) # set ha-mgmt-status enable FG100F-1 (ha) # config ha-mgmt-interfaces FG100F-1 (ha-mgmt-interfaces) # edit 1 new entry '1' added FG100F-1 (1) # set interface <----- Type question mark (?) after interface. <string> please input string value ha1 interface ha2 interface wan2 interface 'mgmt' interface is not available Even from the GUI, the 'mgmt' interface is not visible. The reason why mgmt is not available is because it has a DHCP server option enabled.   Option 1: Disable the DHCP server option under the mgmt interface. Then select 'OK'. Option 2: Under config sys DHCP server, type show and search for the entry that is using the mgmt interface.   Delete option 4 and type show again. The configuration using the mgmt interface is gone.  In the CLI, go back to 'config system ha', then 'config ha-mgmt-interfaces' and 'edit 1'. After this, mgmt will be available to be chosen.