Bridging vLAN over wireless

Installing and Using OpenWrt
1

Hi forum

I currently have a guest vLAN (802.1Q based) which I would like to wirelessly bridge, together with my private LAN, to a second wireless AP.

So at the wireless bridged AP I want to have the same two SSIDs than in my main AP, one for guest and one private.

I would appreciate some hints how to start since I am quite clueless how this could be achieved :sweat_smile: .

2

The IEEE 802.11 standards do not support this (or VLANs).

You would have to do some kind of tunneling (GRE, B.A.T.M.A.N.(?), etc.) on top of the 'normal' WLAN uplink. Your plan would be much easier with a cat6 wire between the APs.

3 Likes
3

uhm, WDS? What's wrong with it?

1 Like
4

Only works once per radio (valid interface combinations).

1 Like
5

I'm pretty sure I have used it reliably for quite a while but it turns out it was indeed only for the main vlan, found the configs.... v15.05, long time ago :smiley:

1 Like
6

Vxlan is another option to carry layer2 over layer3.

4 Likes
7

Thank you all for the fast feedback.

@slh Your plan would be much easier with a cat6 wire between the APs

In principle I agree but it is too much work just for the sake of guest having internet on the balcony :laughing: . I would rather install an additional AP which I power on in case of visitors.

@_bernd Vxlan is another option to carry layer2 over layer3.

Thank, looks a bit complicated for me at the first glance but I will take a second look :pray:

8

Did you have seen https://openwrt.org/docs/guide-user/network/tunneling_interface_protocols#vxlan_example_configuration ?

No need for evpn and bgp. You can use vxlan with iproute2 (package name ip-full) or even with the uci config examples in the wiki. In fact it's even easier then gre.

2 Likes
9

See [Solved] Configure Guest Wifi to use VLAN on a dumb AP - #3 by dsouza

10

That’s the opposite: vlan over wired.
For vlan over wireless, I’d recommend using Batman.

2 Likes
11

Thank for sharing, I just googled vxlan and did not see this wiki yet. Will take a look.

12

This is about GRE tunneling over wifi:

1 Like
13

Thanks a lot @egc , that looks great :tada:

14

like others have said you can’t use vlans over wireless directly

but, it doesn’t really mean much if your wireless router supports multiple networks on the radio, so you just have each ssid bridge into whatever ethernet vlan you want on each side

15

No. Please don't. The fewer networks on air the better.
Let the user just use vxlan or batman or gre, or an Ethernet cable.

16

This is a bit unhinged :rofl:

Hide the ssid ? I mean cmon :laughing:

1 Like
17

The more management frames in the air the more the air time is shared. It's not about privacy it's about a clean and unpolluted environment.

18

That will actually work, but:

So could be used as a quick and dirty fixup/workaround, but can be very inefficient with likely latency issues, particularly when busy.

Eoof, that's a bit unhinged :joy:

19

cool, I mean I doubt you guys would blow anything out of proportion or anything :laughing:

20

For the millionth time, stop exaggerating :rofl: