Need VLAN with eth0 and eth1 w/o luci

Continuing the discussion from OpenWrt 19.07.1 ath79 tiny LuCI:

I have a second router TP-Link TL-WR740Nv4. It is running a custom 19.07 that Ashus kindly build for me. It is without (luci+opkg) but with wireguard.

I need help regarding vlan involving the WAN port of WR740.

Currently, WAN is on eth1, and LAN is on eth0.1, it seems switch0 do not include eth1 by default.

I want to change eth1 from untagged to a trunk port. I want to create VLAN interface to run AP and add some eth0 ports as member.

How can I do that by using uci or by editing config files?

Thanks in advance!

I can give you my VLAN configuration from /etc/config/network from my Archer C7 with a screenshot.

config switch
        option reset '1'
        option name 'switch0'
        option enable_vlan '1'

config switch_vlan
        option vlan '1'
        option device 'switch0'
        option vid '10'
        option ports '0t 2 1t'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option vid '62'
        option ports '0t 3 4 5 1t'

config switch_vlan
        option device 'switch0'
        option vlan '3'
        option ports '0t 1t'
        option vid '130'

is equivalent to this:

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Thank you very much!

My main router is TP-Link TL-WDR3600, which all the physicall ports are under eth0, so I can copy configrations from it for VLANs not involving eth1 - which is the WAN port of the WR740N.

network.@switch_vlan[0].ports='1 2 3 4 0t'

network.@switch_vlan[0].ports='1 2 3 4 0t'

I understand that 0 is CPU, and 1-4 and LAN ports 1-4 physically. But what is the number for eth1 (wan port)?

How can I add "eth1" to a vlan using a line similar to above?

Most likely you can't. VLAN configuration is valid for switch part of the device, what you see as eth0. My device has switch over all ports, so I can assign them all. Use only those four ports you see and a switch if you need to connect more devices.

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OK. I will only use the yellow ports while leaving the blue colored wan port empty.

It turns out the physical to logical port number mapping is funny:

Physical 1 <> Logical 2 (as used in vlan membership assignment)
Physical 2 <> Logical 3
Physical 3 <> Logical 4
Physical 4 <> Logical 1

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