How to create a hardware switch on FGT 40c running on FortiOS 5.0

Hello Shailesh,

Greetings for the day!

Firstly, like to keep you informed that, firmware version till 5.6.x has reached their End of Life on 30th Sep 2021 and version 6.0.x is going to this September end.

And, FortiGate 40C has already reached its End of Life some time back.

Regarding your query, you can get it added by commands below,

config system virtual-switch
edit virt-sw-1
set physical-switch sw0
config port
edit 1
set port p1
set speed <speed>
set duplex { up | down}
next
edit 2
set port p2
set speed <speed>
set duplex { up | down}
end
edit 3
set port p3
set speed <speed>
set duplex { up | down}
next

end

config system virtual-switch

edit virt-sw-2

edit 4
set port p4
set speed <speed>
set duplex { up | down}
next
edit 5
set port p4
set speed <speed>
set duplex { up | down}
end

Reference Documentation below. Page 262

https://fortinetweb.s3.amazonaws.com/docs.fortinet.com/v2/attachments/04635c11-1a04-11e9-9685-f8bc1258b856/fortios-handbook-50.pdf

Have a nice day ahead.

Cheers!