Chapter 9 High Availability for FortiOS 5.0 : Configuring and connecting HA clusters : Example: Transparent mode active-active HA configuration
  
Example: Transparent mode active-active HA configuration
This section describes a simple HA network topology that includes an HA cluster of two FortiGate-620B units installed between an internal network and the Internet and running in Transparent mode.
Example Transparent mode HA network topology
General configuration steps