It is not possible to pass VLAN traffic through the WDS bridge between (2)
EAP600 and have the second EAP600 pass the tagged VLAN through one of its
SSIDs on the band configured as an access point.

It is better to use directional antennas such as the
EnstationAC
or the
ENH500
for point to point WDS Bridge link that requires VLAN Passthrough.