FortiGate use sub-vlan how to communicate with PC

Hi everyone:

I have a question about fortigate use sub-vlan how to communicate with PC through switch

here is my switch conf:

!

switchport trunk encapsulation dot1q switchport trunk native vlan 999 switchport mode trunk

!

PC1 's ip address is 192.168.1.1/24 should have been able to ping 192.168.1.254

PC2 's ip address is 192.168.2.1/24 should have been able to ping 192.168.2.254

But I use EVE-LAB doing some test, it is timeout.

Is there any problem with my conf?

another question:

Is switch have to configure switchport trunk native vlan 999 ?

Is fortigate vlan 1 have a tag?

any body have any thoughts?

Best Regards,

Tim

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