How to set up VLAN on Fritz!Box 4020 WAN port

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello,
I tried to find info's for setting VLAN on my 4020 Box.

# ls -l /sys/class/net

gives 2 devices. eth0 and eth1.

When looking in LuCi I find the switch configuration. But unlike to my Archer C7 there are only 4 LAN ports listed, all pointing to eth1. So it's easy to configure VLAN-IDs for eth1.

But the WAN Port, which is indeed eth0 is missing.

In OpenWrt Wiki I found a hint that this has to be done OS-based.

In fact I can add VLANs by CLI.

 # ip link add link eth0 name eth0.1 type vlan id 1
 # ip link add link eth0 name eth0.3 type vlan id 3
 # ip link add link eth0 name eth0.4 type vlan id 4

When I got these 3 interfaces I think I should be able to bridge the WAN Port with the LAN ports.
eth0.1 to eth1.1
eth0.2 to eth1.2
eth0.3 to eth1.3

But how to define that data on VLAN ID 3 and 4 are tagged and data with VLAN ID are untagged on the WAN port? (Like in the switch configuration in LuCi)

And how to make this "reset safe"?

Henning

2

Nobody who knows about this?

3

Same issue observed by myself. I own a Fritzbox 4020. I can use the 4 physical LAN ports on the device to configure the switch and corresponding VLANs. Unfortunately I have not figured out yet how to use also the physical WAN port on the device.

Does anybody have a hint?

Many thanks in advance