Fortigate 90G Wan2 redefined as LAN?

[okllee]

Hi, since I've recently acquired a 10G fiber home connection. I'm kicking around an idea of how to go about getting the most out of the connection.

If I recalled correctly, its possible to define any interface to perform any roles. Is that still correct?

I'm thinking of getting a 90F, and refining WAN2 as the primary LAN interface, and not use the 1GE ports at all or just redefine it as DMZ. Also, throw in dumb 10GE switch behind LAN (WAN2) that so my primary / higher priority computers and devices they would benefit from maximum available speed https://9apps.ooo/ .

Does this configuration seem reasonable and possible?

Preemptively thank you for the inputs

[Toshi_Esumi]

You should be able to. Virtually all ports on any FGT models can be used for either wan or lan ports.

Toshi

[ghanbal1]

Yes . I did exactly this for a location with a multigig internet circuit. Be aware that you don't get 4 10GB interfaces only 2 because the SFPs and Ethernet are shared media.

[asindona]

Could you share the howto? I'm trying to reconfigure the wan1/wan2 ports as LAN and use portA and B as WAN due to the fact that I want to use the SFP ports with 10G fiber links internally. I already changed successfully the role of A and B ports.

I changed the role with set role lan in both wan1 and wan2 ports but when I want to add to the fortilink aggregated interface I get an error and I can't figure why. 
In my design SFP1 and 2 will be trunk port for both fortilink connectivity and for all other VLANs