I've been testing a switch with VLAN features. I have nothing configured on the router for VLANs because it does not support it.
I got it set up and was testing isolation between endpoints using ping. The endpoints seem to be horizontally isolated but not vertically, as in endpoint B (below the switch) can still communicate with endpoint A (in between the switch and router) or the other way around. Is this normal behavior with VLANs? Is there an option to prevent this vertical communication?