Multiply VLAN (RB493G - 5.12)

Hi

I’m a newbie with MikroTik - RouterOS. I’ve googled a lot but doesn’t find a solution to my problem.
I’ve the following situation:

VLAN10, VLAN20, VLAN30 and Internet-Access
VLAN10 to VLAN20 - no access
VLAN20 to VLAN10 - no access
VLAN10 to VLAN30 - access granted
VLAN20 to VLAN30 - access granted
Only VLAN10 has internet access.

From my booth switches I’d like to connect to the RB493 (tagged). Therefore I should be able to add VLAN10 and 20 to ether2 and VLAN10 and 20 to ether3 but I receive the following error - Already have device with such name.

Sorry, I’dont know how to do this..

Thanks for help
Dani
Network.jpg

You must use unique name for each VLAN interface.