I’m sure someone will reply with the golden standard post on VLANs: http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
From a quick glance the config is missing some stuff. Where are the ports? The bridge? You need to assign the VLANs to ports. How are you setting this up?
Something like:
/interface bridge vlan
add bridge=bridge tagged=bridge,ether3 vlan-ids=10
add bridge=bridge tagged=bridge,ether3 untagged=ether2 vlan-ids=20