RTX810で

vlan port mapping lan1.1 vlan1
vlan port mapping lan1.2 vlan1
vlan port mapping lan1.3 vlan1
vlan port mapping lan1.4 vlan2
lan type lan1 port-based-option=divide-network
ip vlan1 address 192.168.A.B/24
ip vlan2 address W.X.Y.Z/28

ってやったら vlan1とvlan2の間でルーティングできる?