...
Port isolation provides the possibility to divide (isolate) certain parts of your network, this might be useful when you need to make sure that certain devices cannot access other devices, this can be done by isolating switch ports. Port isolation only works between ports that are members of the same switch. Switch port isolation is available on all switch chips since RouterOS v6.43.
...
In some scenarios you might need to isolate a group of devices from other groups, this can be done using the switch port isolation feature. This is useful when you have multiple networks but you want to use a single switch, with port isolation you can allow certain switch ports to be able to communicate through only a set of switch ports. In this example devices on ether1-4 will only be able to communicate with devices that are on ether1-4, while devices on ether5-8 will only be able to communicate with devices on ether5-8 (ether1-4 is not able to communicate with ether5-8)
| Note |
|---|
Port isolation is only available between ports that are members of the same switch. |
To configure isolated switch groups you must first switch all ports:
...