Virtual Local Area Network (VLAN) is a Layer 2 method that
allows multiple Virtual LANs on a single physical interface (ethernet,
wireless, etc.), giving the ability to segregate LANs efficiently.
You can use MikroTik RouterOS (as well as Cisco IOS, Linux and
other router systems) to mark these packets as well as to accept and route
marked ones.
As VLAN works on OSI Layer 2, it can be used just as any other
network interface without any restrictions. VLAN successfully passes through
regular Ethernet bridges.
You can also transport VLANs over wireless links and put
multiple VLAN interfaces on a single wireless interface. Note that as VLAN is
not a full tunnel protocol (i.e., it does not have additional fields to
transport MAC addresses of sender and recipient), the same limitation applies
to bridging over VLAN as to bridging plain wireless interfaces. In other words,
while wireless clients may participate in VLANs put on wireless interfaces, it
is not possible to have VLAN put on a wireless interface in station mode
bridged with any other interface.
The complete article, Download here
Sumber: https://wiki.mikrotik.com/wiki/Manual:Interface/VLAN
