Fortinet fortigate-100a Betriebsanweisung

An active-passive (A-P) HA cluster, also referred to as hot standby HA, consists of a 
primary FortiGate unit that processes traffic, and one or more subordinate FortiGate 
units. The subordinate FortiGate units are connected to the network and to the 
primary FortiGate unit but do not process traffic.

Active-active (A-A) HA load balances network traffic all the FortiGate units in the 
cluster. An active-active HA cluster consists of a primary FortiGate unit that processes 
traffic and one or more subordinate units that also process traffic. The primary 
FortiGate unit uses a load balancing algorithm to distribute virus scanning to all the 
FortiGate units in the HA cluster.

By default the FortiGate unit load balances virus scanning among all of the FortiGate 
units in the cluster. Using the CLI, you can configure the FortiGate unit to load balance 
all network traffic among the FortiGate units in the cluster. See the FortiGate CLI 
Reference Guide for more information.

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For more information about FortiGate HA and the FGCP, see the FortiGate High 
Availability Guide.

Go to System > Config > HA and use the options described below to configure HA.

Standalone mode is the default operation mode. If Standalone mode is selected the 
FortiGate unit is not operating in HA mode.

Select Standalone Mode if you want to stop a cluster unit from operating in HA mode.