Load Balancing using Fortigate device

I've installed a Fortigate 300A firewall device. Is it possible to use this device as a load balancer for my 2 internet lines ? something like what GLBP does.

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JimboEfxConnect With a Mentor Commented:
It is indeed possible to use the Fortigate for WAN failover/load balancing. The fortigate can either use the links in active/passive fashion outbound, but active/active inbound or (to a degree active/actvie outbound and inbound. This assumes the fortigate is the outgoing router to the internet and that the WAN connections are connected to seperate interfaces (e.g. WAN1 and WAN2).

There are a number of articles on the subject, but i will list just these two:


There are also some documentation on the unit:


I have no personal experience of GLBP to give you a direct comparison.

You should note that the mechanism used in a single unit for WAN failer is based purely on the ability to ping a target (or multiple targets). When the target (or targets) are unavailable for a defined period of time the interface is marked as down and the routing table adjusted (until it gets replies again).

Having more than one unit in a cluster gives you some more options to survive a unit failure, or even for example someone unplugging WAN1 on one unit - as the unit would fail over to another node which said its WAN1 was OK.

So the simple answer is yes, the longer answer is it depends on what your expectations are.
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