When you log into the FortiGate-7000 GUI or CLI by connecting to the IP address of the aggregate management interface, or through a console connection, you are logging into the FIM in slot 1 (the address of slot 1 is FIM01). The FIM in slot 1 is the FortiGate-7000 config-sync master. All configuration changes must be made from the GUI or CLI of the FIM in slot 1. The he FIM in slot 1 synchronizes configuration changes to the other modules and makes sure module configurations remain synchronized with the FIM in slot 1.
If the FIM in slot 1 fails or reboots, the FIM in slot 2 becomes the config-sync master.
For the FortiGate-7000 to operate normally, the configurations of the FIMs and FPMs must be synchronized. You can use the information in the following sections to make sure that these configurations are synchronized