@Jimmy9008 said in VLAN on Dell N4064 Stacked: Im guessing 'U' is fine. As I want vLAN2 to pass traffic where the device has already set vlan2 in its NIC. If the LAG is set to 'T', all traffic will be set to vlan2, right? Even when from vLan1/default... I think it's better to tag every vlan in both ends. Then you can be certain traffic ends up on the same vlan on the other switch stack.