Chapter 6 Deploying Wireless Networks : Reference : FortiAP web-based manager : System Information : Connectivity
  
Connectivity
These settings determine how the FortiAP unit connects to the FortiGate WiFi controller.
Uplink
Ethernet - wired connection to the FortiGate unit (default)
Mesh - WiFi mesh connection
Ethernet with mesh backup support
Mesh AP SSID
Enter the SSID of the mesh root. Default: fortinet.mesh.root
Mesh AP Password
Enter password for the mesh SSID.
Ethernet Bridge
Bridge the mesh SSID to the FortiAP Ethernet port.
This is available only whe Uplink is Mesh.