Issues High Availability Fortigate

Question

I am trying to place two FortiGate 40F (OS 6.4.8) devices in HA, but I cannot achieve synchronization between the devices, despite the fact that the modifications that I am making in one of the FGs are replicated in the other.
Regarding physical connectivity, they only have the WAN connection to a switch that is connected to a router. Heartbeat port is LAN 3.

Regarding the front LED witnesses, it strikes me that in one of the two devices (the secondary) the Speed LED of the Heartbeat interface does not light up

When I configure both FGs, if I keep the Heartbeat cable connected, I am only allowed to access the configuration of the primary from its management interface, being impossible to access the configuration of the secondary from its respective management interface.
In the HA menu, keep the secondary as out of sync.

The configuration of the interfaces on HA FG 1 (the primary) is:

And the HA configuration on the primary FG is as follows:

Regarding the second, the configuration (which I can only access when I disconnect the cable from the Heartbeat interface, becoming primary) is as follows:

Finally, the HA configuration in FG 2 is as follows:

I am not configuring any interface to monitor in order to reduce the chances of error.
Also, I checked the checksums and both global, root and all are the same.
I would appreciate if someone could analyze the possible failure since I can't identify what it is.
From already thank you very much

Horacio FUENTES

AEK · Accepted Answer

Hola Horacio

Your Lan3 HB interface is obviously down on secondary FGT.

Try check the interface is administratively up, otherwise bring it up, otherwise replace HB cable and make sure it is at least Cat5a or Cat6, otherwise change HB interface.

Toshi_Esumi · Answer

To access the secondary in GUI, you need to use LAN1/MGMT interface by setting the GW in the HA config, and assigning different IP on the interface. It doesn't show it at the place you're trying to see because the secondary HA config is supposed to be almost identical with the primary.

But first thing you need to check is "get sys ha status" on both units. As AEK suspects that would likely show some kind of heartbeat connection problem at the top of the output.

Then I'm concerning the LED on the bottom unit in the picture. 6.4.8 has a bug and SPEED LEDs don't get lit on FG40F like the top unit. Maybe a bad port on the bottom unit or a bad cable.

By the way, the LED issue was fixed by 6.4.9, which you might want to try upgrading them to, but I suspect more hardware/Layer1 problem.

Toshi

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