Vlan over wds link

Installing and Using OpenWrt
1

Hi,
This is my current setup.
I use asus RT-AX88U Pro router as a gatweay for internet. On Asus I created VLAN ssid. My main local wifi router is running openwrt current stable version and is running as wds ap. As i never before set up VLAN I connected my wds ap with another lan cable to asus router and use that connection as my trunk port.

Dhcp is done on asus router. All openwrt routers are just dumb ap or transparent bridges, if I got terminology correct.

On wds ap I created, for testing purposes, ssid and connected my phone to it. My phone got 192.168.10.x address that is address pull for vlan id.
So far so good. VLAN is working between asus and wds ap.

I have few wds clients running openwrt connected to wds ap.

I would like to make VLAN working over wds wifi backhaul but I'm lost there.
It is not that difficult to set up VLAN when you have router to router ethernet connection but as I'm not experienced enough with VLAN setup I find it very difficult to set it up over wds and I didn't found a way to do it.

This is my wds ap config

/etc/config/network

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'lan1'
	list ports 'lan2'
	list ports 'lan3'
	list ports 'lan4'

config interface 'lan'
	option device 'br-lan'
	option proto 'static'
	option ipaddr '192.168.8.2'
	option netmask '255.255.255.0'
	option ip6assign '60'
	option gateway '192.168.8.1'
	list dns '192.168.8.40'

config device
	option type 'bridge'
	option name 'VLANS'
	list ports 'lan5'
	list ports 'VLANS.10'
	list ports 'VLANS.20'
	list ports 'VLANS.30'

config bridge-vlan
	option device 'VLANS'
	option vlan '10'
	list ports 'VLANS.10:t'

config bridge-vlan
	option device 'VLANS'
	option vlan '20'
	list ports 'VLANS.20:t'

config bridge-vlan
	option device 'VLANS'
	option vlan '30'
	list ports 'VLANS.30:t'

config interface 'VLAN10'
	option proto 'static'
	option device 'VLANS.10'
	option ipaddr '192.168.10.2'
	option netmask '255.255.255.0'

/etc/config/wireless

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option ssid ''
	option encryption 'psk2'
	option key ''
	option wds '1'
	option ifname ''

On wds client I have the following setup
/etc/config/network

config device
	option name 'br-lan'
	option type 'bridge'
	option bridge_empty '1'
	list ports 'lan1'
	list ports 'lan2'
	list ports 'lan3'
	list ports 'lan4'

config interface 'lan'
	option device 'br-lan'
	option proto 'static'
	option ipaddr '192.168.8.5'
	option netmask '255.255.255.0'
	option ip6assign '60'
	option gateway '192.168.8.1'
	list dns '192.168.8.1'

/etc/config/wireless

config wifi-iface 'wifinet3'
	option device 'radio0'
	option mode 'sta'
	option network 'lan'
	option ssid ''
	option encryption 'psk2'
	option key ''
	option wds '1'
	option ifname 'WDS-Client'

I don't understand how to set up VLAN over wds link. If someone did it and can share his config or can point me in right direction on how to do it, I will appreciate it.

2

You cannot trunk VLANs over a wireless connection, the wifi standards do not include support for tagged frames.

You need add another layer on top of the wifi connection, like VxLAN or GRE.

6 Likes
3

Alternatively, if the amount of VLANs is not that large, you can create one SSID per vlan.
Check the limitations of the hardware first.
iw info and check valid interface combinations: section.

4

B.A.T.M.A.N works tremendously over 802.11s.

5

Tnx everyone for help. I set up all routers in batman-adv mesh. This is really great thing. I managed to set up my first vlan over mesh. I'm still testing it, but for now it seem that is working fine.