Help to configure PPPOE with Sunrise(switzerland)

Hello Everyone,

I struggle to configure a Sophos XG (XG85W) with a PPPOE connection. (sophos XG85W is already used with the old copper connection and registered).

I received a Zyxel (Zyxel FMG3025) with the new fiber connection.

PPPOE connection is OK. I tested it directly with my laptop using the Zyxel in routing mode.

Confirmation receveived from the Sunrise Tech. I have to use Vlan configuration with priority 3 and ID 11 and nat enable.

I want to set it in bridge mode and do the pppoe Connection via the Sophos.

Searching the web I found this information with the vlan configuration on the Zyxel in bridge mode

Searching the forum I found opposite info. Vlan must be configured on the Zyxel and not on sophos or vlan must be configured directly on sophos and not on Zyxel.

Clarification would be great on this point.

Further help to configure properly the pppoe on the sophos would be much appreciated.

I don't have access to the Firewall right now and I posted the details based on my memories.

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Info povided by sunrise are quite thin and they refuse to help with the sophos. They provide only help on devices provided by them and they didn't even try to help with the sophos.

OTO ID
B.110.735.xxx.x
DSL Login
DSL mot de passe
xxxxxxxx@adslpremium.ch
Password

vlan
3
11

nat enable

WAN IP adresse
62.167.x.xxx
DNS Server adresse
Primary: 212.98.37.129 / 2001:1700:A00::
Secondary: 194.230.55.98 / 2001:1700:A00:

Thanks in advance for your time and your help.

David