As I recall, the NanoStation will happily pass VLAN traffic and is VLAN aware for the management interface, but I'm not aware of the ability to specify which VLAN to use for locally connected stations. Note that I am using them for a point to point link with a managed switch (CSS326-24G-2S) on each end of the path. It is all VLAN tagged traffic over the MW path, but the management functions are operating on one of the VLANs just fine.
Poking through the user interface, the only reference to VLANs I can find is the management interface.
RB750Gr3, RB750r2, CRS326-24G-2S (in SwitchOS), CSS326-24G-2S, CSS106-5G-1S, RB260GS
Not sure if I beat them in submission, or they beat me into submission