I would like to create 2 separate VLANs using a Cisco SG200-series smart switch (layer 2) where the devices would not see each other, while being able to connect to the internet.
The setup is simple, the router - Thomson TG789vn - acts as the DHCP server and plugs into the switch (port 49). The client devices connect to other ports of the switch.
What I tried is changing the router port interface to General and adding it to both VLANs as untagged (see screenshot:)
The devices on the default VLAN (1) work fine, however devices on VLAN 2 (e.g. port 38) have no connection (do not receive an IP from the DHCP server, cannot ping it).
The DNS Server configuration does mention VLAN 1 interface though:
Is this possible without any additional hardware and if yes, how should the setup look like?