Ubiquiti Bridging w/ Vlans
I've done several Ubiquiti Bridging installs now, and although the interface is very intuitive, the terminology can sometimes be confusing if you are more familiar with Cisco bridging.
Also, by default, only a single Vlan is passed between the 2 devices, and one may think that each Vlan needs to be defined and sub-interfaces need to be created on the Ubiquiti devices in order to Trunk the Vlans across, but this is not the case.
On a quick side note, for anyone starting with an AP "out-of-the-box" or one that has been set to factory default, the default IP address is 192.168.1.20, and the login credentials for username and password are both "ubnt".
Here's the basic topology... We have a Main Office, and want to extend several Vlans (101, 150, 201, 250) across a wireless PTP (or PTMP) link to our Remote site(s).
To use Cisco terminology, in Ubiquiti, you'll be configuring the "Root Bridge" as the "AP" and the "Non-Root Bridge" as the "Station". Do that now for each.
Choose "WDS (Transparent Bridging Mode)" on the "AP" and the "Station(S)" to pass multiple Vlans. (it's really just that simple)
Create a unique SSID on the "AP", and then select (or manually configure) that same SSID on the "Station(s)". In this example, I also "Locked" the "Station" to the MAC address of the "AP" (aka Root) so it can only join the defined "AP" and not be steered away maliciously or accidentally.
You will also want to create a complex WPA2 AES PSK between the 2 devices to keep the bridge link secure.
Additionally, you can also "Hide SSID" to keep it from being easily discovered, and you can create a MAC ACL on the "AP" (aka "Root") to keep other devices from joining your bridge link. In my lab environment, I did not bother with this, but I certainly do in real deployments.
Below are screenshots of the important and relevant pages in the Ubiquiti interfaces. The "AP" is shown on the Left, and the "Station" is shown on the Right.
Next, on the "Network" tab for both devices, leave both configured with a "Network Mode" of "Bridge".
Now you will need to configure them each with a unique IP address that matches your network.
You can configure a "Mgmt Vlan" on the Ubiquiti AP (and Station(s)) if you want your Mgmt IP for these to be in a Vlan other than the default Vlan of 1... Do not confuse "Mgmt Vlan" with a "Native Vlan" though... the traffic is still tagged. In this example, I am not using Vlan 1 on my network and I wanted them to be addressed in Vlan 101.
Now you will need to configure them each with a unique IP address that matches your network.
You can configure a "Mgmt Vlan" on the Ubiquiti AP (and Station(s)) if you want your Mgmt IP for these to be in a Vlan other than the default Vlan of 1... Do not confuse "Mgmt Vlan" with a "Native Vlan" though... the traffic is still tagged. In this example, I am not using Vlan 1 on my network and I wanted them to be addressed in Vlan 101.
The last 2 screenshots show the association between the "AP" and the "Station(s)", and the link quality across the bridge.