Chapter 6 Deploying Wireless Networks for FortiOS 5.0 : Wireless Mesh : Overview of Wireless Mesh : Types of wireless mesh
  
Types of wireless mesh
A WiFi mesh can provide access to widely-distributed clients. The root mesh AP which is directly connected to the WiFi controller can be either a FortiAP unit or the built-in AP of a FortiWiFi unit that is also the WiFi controller.
Figure 163: FortiAP units used as both mesh root AP and leaf AP
Figure 164: FortiWiFi unit as root mesh AP with FortiAP units as leaf APs
An alternate use of the wireless mesh functionality is as a point-to-point relay. Both wired and WiFi users on the leaf AP side are connected to the LAN segment on the root mesh side.
Figure 165: Point-to-point wireless mesh