Chapter 10 Install and System Administration for FortiOS 5.0 : VLANs : VLANs in transparent mode : General configuration steps
  
General configuration steps
The following steps summarize the configuration for this example. For best results, follow the procedures in the order given. Also, note that if you perform any additional actions between procedures, your configuration may have different results.
1. Configure the FortiGate unit which includes
Adding VLAN subinterfaces
Adding the security policies
2. Configure the Cisco switch and router
See Also
Configure the FortiGate unit
Configure the Cisco switch and router
Test the configuration