When operating in Multi VDOM mode, the FortiGate-6000 uses the Security Fabric for communication and synchronization between the management board and FPCs. By default the Security Fabric is enabled and you should not change the security fabric configuration.
You can verify the default Security Fabric configuration from the CLI:
config system csf
set status enable
set upstream-ip 0.0.0.0
set upstream-port 8013
set group-name "SLBC"
set group-password <password>
set accept-auth-by-cert enable
set log-unification disable
set management-ip <ip-address>
set management-port 44300
set authorization-request-type serial
set fabric-workers 2
set configuration-sync local
set fabric-object-unification default
<ip-address> is set to the IP address of the FortiGate-6000 mgmt1 interface.
While operating in Multi VDOM mode, you should not change the Security Fabric configuration from the . And you cannot add the FortiGate-6000 to a Security Fabric. Multi VDOM mode supports the Security Rating feature.
You can go to Security Fabric > Fabric Connectors > FortiAnalyzer Logging to enable and configure FortiAnalyzer logging.
Multi VDOM mode also supports other configurations on the Security Fabric menu, including viewing the Physical Topology and Local Topology and configuring Security Rating, Automation, Fabric Connectors, and External Connectors.