Hi Ingatel,
If you want to communicate devices between VLANs (sofia to router, miki to router, classroom to miki etc.) you need routing.
- You can pass those VLANs to Mikrotik so it will do the routing, for this scenario your XOS->Mikrotik port should be tagged in all the VLANs, nothing more on this side.
- You can also perform routing on EXOS, for that your XOS->Mikrotik port would be only in VLAN router, all VLANs have to have their IPs (from different subnets) and ipforwarding enabled ('enable ipforwarding'). This approach puts you probably in need of ACLs or Policy or PVLAN (translation mode) to limit communication between internal VLANs like CCTV-classroom etc. All this you can read further here: https://documentation.extremenetworks.com/exos_22.5/EXOS_User_Guide_22_5.pdf
You have to decide where you want to manage routing and inter-VLAN communication security settings: EXOS or Mikrotik?
Kind regards,
Tomasz