Security Fabric loose pairing support is removed for FortiADC, FortiDDoS, and FortiWLC.
Devices that support tight pairing and loose pairing, such as FortiMail and FortiWeb, must be reconfigured to use tight pairing after upgrading. For other Fabric devices, such as FortiADC, FortiDDoS, and FortiWLC, the Security Fabric support must be configured on the device to pair with the FortiGate so they can join the Security Fabric after upgrading FortiOS.
In the GUI:
The Create New button is removed from the Security Fabric > Fabric Connectors page.
Loose pairing devices are not visible in topology pages or the Topology tree.
In the CLI:
diagnose sys csf fabric-devicecommand is removed.
config fabric-devicesetting under
config system csfis removed.