https://community.fortinet.com/support-forum-92/fortiswitch-with-fortilink-across-hp5406-4555
Fortiswitch with fortilink across HP5406 | Community
Gave up on the idea of private vlans since they have not worked even with support calls.Changed to this configuration.Fortigate 500E into HP5406 chassis...
fortiswitchacrosscommunity