# ip link add link enp2s0 name enp2s0.100 type vlan id 100
# ip link set dev enp2s0.100 up
# ip addr add 192.168.1.10/24 dev enp2s0.100
on your client will give you full access to the management interface (well, at least if plugged into port 1), including ssh/ luci, etc.