HA in NAT/Route mode

High availability

 

 

8Under Monitor on Interface, select the names of the interfaces to be monitored.

Monitor FortiGate interfaces to make sure they are functioning properly and that they are connected to their networks. If a monitored interface fails or is disconnected from its network, the FortiGate unit stops processing traffic and is removed from the cluster. If you can re-establish traffic flow through the interface (for example, if you re-connect a disconnected network cable) the FortiGate unit rejoins the cluster. You should only monitor interfaces that are connected to networks.

9Select Apply.

The FortiGate unit negotiates to establish an HA cluster. When you select apply you may temporarily loose connectivity with the FortiGate unit as the HA cluster negotiates.

Figure 13: Example Active-Active HA configuration

10Repeat this procedure to add each FortiGate unit in the HA cluster.

When you have configured all of the FortiGate units, proceed to “Connecting the HA cluster to your network”.

Connecting the HA cluster to your network

To connect the HA cluster to your network you must connect all matching interfaces in the cluster to the same hub or switch. Then you must connect these interfaces to their networks using the same hub or switch.

Also, you must connect all of the HA interfaces in the cluster to their own hub or switch. You can also connect a management computer to this hub or switch. The units in the cluster are constantly communicating HA status information to make sure the cluster is functioning properly. For this reason, the connection between the HA ports of all of the FortiGate units in the cluster must be well maintained. An interruption of this communication can cause unpredictable results.

Switches are recommended for performance reasons.

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Fortinet 400 manual Connecting the HA cluster to your network, Example Active-Active HA configuration