Here is a picture of the physical set up, here is a screenshot of the Cisco switch VLAN config, and here is a screenshot of the interface setup on the FG.

There are no IP policies configured on the FG that relate to these VLANs/interfaces/subnets. I have no clue how this is the case and can use any help on troubleshooting this. Now by default, there should be no routing between these VLANs as they're in different subnets, correct? Will do my astonishment this is not the case, while the Mac with a VLAN 16 address can't ping the VLAN 32 Mac, the 32 Mac and ping the 16 Mac. I then connected two Macs to those access ports, they receive the correct IP addresses just fine. I then set two more ports on the switch as access ports and assigned VLAN 16 to one and VLAN 32 to the other. I have a Cisco SG350 switch and as a test, I trunked 2 ports on the switch, one for each VLAN, and connected it to the VLAN 16 and VLAN 32 firewall interfaces. Here is a list of the VLANs and their IP Addresses: I am running a FortiGate 100D and I have created 5 VLANs (DHCP server enabled) with 5 different subnets and assigned them to port 1, 3, 5, 7, and 9 on individual interface mode.

Fortinet vpn client access other vlans