Chapter 6 Deploying Wireless Networks for FortiOS 5.0 : Access point deployment : LAN port options : Bridging a LAN port with a FortiAP SSID
  
Bridging a LAN port with a FortiAP SSID
Bridging a LAN port with a FortiAP SSID combines traffic from both sources to provide a single broadcast domain for wired and wireless users.
In this configuration
The IP addresses for LAN clients come from the DHCP server that serves the wireless clients.
Traffic from LAN clients is bridged to the SSID’s VLAN. Dynamic VLAN assignment for hosts on the LAN port is not supported.
Wireless and LAN clients are on the same network and can communicate locally, via the FortiAP.
Any host connected to the LAN port will be taken as authenticated. RADIUS MAC authentication for hosts on the LAN port is not supported.
For configuration instructions, aee “Configuring FortiAP LAN ports”, below.