Fortinet FortiGate FortiGate-60 Administration Manual page 87

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System config
FortiGate-60 Administration Guide
Unit Priority
Optionally set the unit priority of the cluster unit. Each cluster unit can have a different
unit priority (the unit priority is not synchronized among cluster members). During HA
negotiation, the unit with the highest unit priority becomes the primary cluster unit. The
unit priority range is 0 to 255. The default unit priority is 128.
You can use the unit priority to control the order in which cluster units become the
primary cluster unit when a cluster unit fails. For example, if you have three
FortiGate-3600s in a cluster you can set the unit priorities as shown in
Cluster unit A will always be the primary cluster unit because it has the highest priority.
If cluster unit A fails, cluster unit B becomes the primary cluster unit because cluster
unit B has a higher unit priority than cluster unit C.
Table 4: Example unit priorities for a cluster of three cluster units
Cluster unit
A
B
C
The unit priority is not synchronized to all cluster units. Each cluster unit can have a
different unit priority.
In a functioning cluster, if you change the unit priority of the current primary cluster unit
to a lower priority, when the cluster renegotiates a different cluster unit becomes the
primary cluster unit.
Override Master
Configure a cluster unit to always override the current primary cluster unit and become
the primary cluster unit. Enable override master for the cluster unit that you have given
the highest unit priority. Enabling Override Master means that this cluster unit always
becomes the primary cluster unit.
In a typical FortiGate cluster configuration, the primary unit is selected automatically.
In some situations, you might want to control which unit becomes the primary unit. You
can configure a FortiGate unit as the permanent primary unit by setting a high unit
priority and by selecting override master. With this configuration, the same cluster unit
always becomes the primary cluster unit.
Override master is not synchronized to all cluster units.
In a functioning cluster, if you select override master for a cluster unit the cluster
negotiates and may select a new primary cluster unit.
Password
Enter a password for the HA cluster. The password must be the same for all FortiGate
units in the HA cluster. The maximum password length is 15 characters.
If you have more than one FortiGate HA cluster on the same network, each cluster
should have a different password.
01-28006-0002-20041105
Unit priority
200
100
50
HA
Table
4.
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