Question related to "RouterOS bridge mysteries explained"

[HeptaZ]

@mkx

Conceptually: physical port (e.g. ether1) is a port. When you add L3 configuration (e.g. IP address) to it, it becomes interface. If you want to work with tagged frames, coming in and leaving out of, you have to create appropriate VLAN ports, anchored to physical port. Adding IP addresses to those VLAN ports makes them VLAN interfaces (VLAN ports can be used as bridge ports when creating per-VLAN bridge in a pre-6.42 fashion).

So if I issue my Router these command

/ip add add interface=ether2 address=192.168.1.254
/interface vlan add vlan-id=10 interface=ether2

Say I have a switch connected to my Router that sends tagged frames with vlan id 10, when my router receives the frames and sends the reply to the switch, does my router tags the frame it about to send to the switch with vlan id 10 or is it the switch’s duty to tag the reply coming from my router?