IOT devices won't connect using VLAN

RouterOS General
4

I have found this:

/interface bridge vlan
add bridge=bridge comment=Gasten tagged=bridge vlan-ids=30
add bridge=bridge comment=IOT tagged=bridge vlan-ids=20

I would expect to see VLAN filtering on the port(s) as well.
Currently the VLAN config is incomplete.

Is there a trunk/hybrid port to the switch?
Did you do VLAN config on all non-MikroTik devices?

Please have a look at this great tutorial about VLAN:
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1