7100 Wan access over VLAN

[noshell]

Hello all,

I have an issue with a 7100 unit. I have athe following setup :

Internet -- Router -- switch -- Netgate

The WAN access is configured on the switch with a Trunk, so the WAN is on a tagged vlan.

I found the following topic : https://forum.netgate.com/topic/145361/sg-1100-how-to-use-vlan-on-wan but the solution proposed don't work for me.

I will summarize my configuration and what i've done :

• The WAN access port on the switch is in a trunk with a vlan defined.
• Interfaces --> VLANs --> New VLAN for the WAN connection
• Interfaces --> Interface Assignments -> WAN -> VLAN 25 on lagg0
• Interfaces --> WAN (lagg0.25) -> Enable interface / Switch Port 8 / IPv4 address set / Upstream gateway set
• Interfaces --> Switch --> Ports -> Port VID 1
• Interfaces --> Switch --> VLANs -> Vlan Group 3 - VLAN tag 25 - Member 8t

I tried multiples configurations but i can't figure it out. I'm not able the ping the WAN gateway from the netgate device.

Can someone have a insight for me ?

Thanks a lot.