I'm new to network things and am trying to learn hard way - by watching video tutorials and reading documentation. As our company is rather small and I'm all-in-one IT solution, courses most likely aren't an option anytime soon.
We have RB2011UiAS-2HnD-IN device, containing two built in switches, configuration done before my time and by external 3rd party technician. On switch2 we have one subnet with four devices connected, and on switch1 - two HP unmanaged 1420 devices connecting our office network (computers, laptops, WiFi routers etc.). I want to implement VNC remoting between these two switches, as well as make printer in Office network available to one machine in switch2 network.
I also have two bridges there - LAN-bridge-local, connecting sfp1, wlan1 and ether2-master-local (where our office network HP switch is connected). Other is DMZ-bridge-ext, to which, as far as I can tell, only DMZ-ether6-master-ext is joined. I checked this by going to
/interface bridge port> print
In regard of interfaces, ether2 is master to 3, 4 and 5; and ether6 is master to 7, 8, 9 and 10. This is, as I understand, standard configuration. Suggested solution from here was to add bridge between ether2 and ether6. I added new bridge from WinBox GUI (as I'm learning, I'm switching between GUI and terminal, based on what tutorial suggests), and then tried:
/interface bridge port> add bridge test-bridge1 interface=ether2 failure: device already added as bridge port.
Question 1: Can an interface be a part of multiple bridges?
Question 2: How to allow access between those two switches only on certain ports/addresses (for example, from ether2, 192.168.0.100 I'd like to access every device on switch2, ether6-9, and I'd like device on ether6, 192.168.15.100 to access printer on ether2, 192.168.0.20).