Hi MS120 switch with access port (native VLAN 40). When we connect a computer everything works fine (internal network + connection to our USG, who handles all VLANS, routing and WAN). When we connect a dumb layer 2 switch however (due to not enough cables atm) the internal network works fine except access to the USG (and everything behind it) for all clients connected to the dumb switch. This exact same setup (untagged VLAN40 port) on our old Zyxel GS1920 switch works just fine. What might cause this problem? Thanks
... View more