Fortinet FortiGate FortiGate-5000 Backplane Communications Manual page 14

HA configurations
14
Figure 5: FortiGate-5005FA2 heartbeat failover from slot 1 (base1) to slot 2 (base2)
To configure HA interface failover to use two FortiSwitch modules
1 Insert FortiSwitch modules into slot 1 and slot 2 of each chassis.
If you want to form HA clusters between FortiGate modules in separate chassis,
link the base backplanes of each chassis by connecting FortiSwitch modules' front
panel ZRE interfaces with an Ethernet cable.
For example hardware installations, see
page 12. For details on hardware installation and related warnings and cautions,
see the FortiGate-5000 Series
2 Insert FortiGate modules into any remaining chassis slot.
3 Power on each chassis.
4 On each FortiGate module to be included in the HA cluster, go to System >
Config > HA.
5 Select the Mode, then enter the Group Name, and Password.
You may also want to set other options, such as the Device Priority or session
pick-up. For detailed instructions, see the
6 If the base backplane interfaces do not have heartbeat interface precedence,
increase the precedence of the base backplane interfaces so that they are
selected as the primary and first failover heartbeat interface.
FortiGate-5000 Series Version 3.0 MR5 Backplane Communications Guide
FortiGate-5140 base backplane communication
Figure 2 on page 11
Introduction.
FortiGate HA Guide.
and Figure 3 on
01-30005-0423-20070829