Failed over switch

[Staphisco]

Hi community 

I have Fortinet firewall 60F and want to attach 2 fortiswithes (48 ports each) as a failed backup.  If switch A goes down then Switch B picks up.  Any Idea how to make it happen ?

thank you. 

[ebilcari]

Switches are not configured in active/passive mode. Usually both switches forward traffic and often MCLAG is used. You can refer to this section of the guide that shows different network topologies.