You can combine two or more FortiManager units into a FortiClient Manager cluster to manage a large number of FortiClient agents. One FortiManager unit is designated as the primary unit and all other units are secondary. The primary unit co-ordinates sharing of information amongst all units in the cluster. FortiClient Manager clustering uses TCP port 6028.

A managed FortiClient agent can log into any one of the units and receive its configuration information from that unit. Similarly, the administrator can log into any one of the units and modify the configuration of a FortiClient agent, even if that agent is connected to a different FortiManager unit.

You must first select one FortiManager unit to act as the primary unit. After enabling clustering, register each secondary unit by entering its serial number and IP address. At each secondary unit, enable clustering and enter the IP address of the primary unit. For detailed information about configuring clustering, see “Configuring FortiClient manager clustering”.