In router on stick , I face a problem is that when I create two sub-interfaces with two different networks each for a specified VLAN, the devices in those VLANs although they are in different VLANs and subnets, they can see each.
I don't know why, if those devices in different VLANs they can't see each other even if they are in same subnet IP, so why here with different subnets for each VLAN they see each other ?!!
I think it related to automatic routing that router by default does for its interfaces.
Thanks in advance to anyone that can help me.
The same result in both packet tracer and GNS3 !]1