Additional Information about VLAN`s
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-BridgeVLANFiltering
https://help.mikrotik.com/docs/display/ROS/VLAN
https://help.mikrotik.com/docs/display/ROS/Bridge+VLAN+Table