Fortinet FortiGate FortiGate-3600 Administration Manual page 90

HA
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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.
If override master is enabled and the primary cluster unit fails another cluster unit
becomes the primary unit. When the cluster unit with override master enabled rejoins
the cluster it overrides the current primary unit and becomes the new primary unit.
When this override occurs, all communication sessions through the cluster are lost
and must be re-established.
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.
Schedule
If you are configuring an active-active cluster, select a load balancing schedule.
None No load balancing. Select None when the cluster interfaces are connected
to load balancing switches.
Hub Load balancing if the cluster interfaces are connected to a hub. Traffic is
distributed to cluster units based on the Source IP and Destination IP of the
packet.
Least- Least connection load balancing. If the cluster units are connected using
switches, select Least Connection to distribute network traffic to the cluster
Connection
unit currently processing the fewest connections.
Round-Robin Round robin load balancing. If the cluster units are connected using
switches, select Round-Robin to distribute network traffic to the next
available cluster unit.
Weighted Weighted round robin load balancing. Similar to round robin, but weighted
values are assigned to each of the units in a cluster based on their capacity
Round-Robin
and on how many connections they are currently processing. For example,
the primary unit should have a lower weighted value because it handles
scheduling and forwards traffic. Weighted round robin distributes traffic more
evenly because units that are not processing traffic will be more likely to
receive new connections than units that are very busy.
Random Random load balancing. If the cluster units are connected using switches,
select Random to randomly distribute traffic to cluster units.
01-28006-0011-20041105
System config
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