System config Configuring an HA cluster
FortiGate-100 Administration Guide 01-28006-0003-20041105 91
Configuring an HA cluster
Use the following procedures to create an HA cluster consisting of two or more
FortiGate units. These procedures describe how to configure each of the FortiGate
units for HA operation and then how to connect the FortiGate units to form a cluster.
Once the cluster is connected you can configure it in the same way as you would
configure a standalone FortiGate unit.
• To configure a FortiGate unit for HA operation
• To connect a FortiGate HA cluster
• To add a new unit to a functioning cluster
• To configure weighted-round-robin weights
To configure a FortiGate unit for HA operation
Each FortiGate unit in the cluster must have the same HA configuration. Use the
following procedure to configure each FortiGate unit for HA operation.
1 Power on the FortiGate unit to be configured.
2 Connect to the web-based manager.
3 Give the FortiGate unit a unique host name.
See “To change FortiGate host name” on page 29. Use host names to identify
individual cluster units.
4 Go to System > Config > HA.
5 Select HA.
6 Select the HA mode.
7 Select a Group ID for the cluster.
The Group ID must be the same for all FortiGate units in the HA cluster.
8 Optionally change the Unit Priority.
See “Unit Priority” on page 87.
9 If required, select Override master.
See “Override Master” on page 87.
10 Enter and confirm a password for the HA cluster.
11 If you are configuring Active-Active HA, select a schedule.
See “Schedule” on page 88.
12 Select Apply.
The FortiGate unit negotiates to establish an HA cluster. When you select apply you
may temporarily lose connectivity with the FortiGate unit as the HA cluster negotiates.
13 If you are configuring a NAT/Route mode cluster, power off the FortiGate unit and
then repeat this procedure for all the FortiGate units in the cluster. Once all of the units
are configured, continue with “To connect a FortiGate HA cluster” on page 92.
Note: The following procedure does not include steps for configuring interface heartbeat
devices and interface monitoring. Both of these HA settings should be configured after the
cluster is up and running.