Cisco IPS inline VLAN Pairing

Trunk two VLANs to the sensing interface of the IPS.  Hosts in vlan 10 and 20 are in the same subnet, and the IPS bridges.

SW1:
interface FastEthernet0/1
 description R1
 switchport access vlan 20
 switchport mode access
!
interface FastEthernet0/10
 description PC1
 switchport access vlan 10
 switchport mode access
!
interface FastEthernet0/11
 description Trunk_To_IPS
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 10,20
 switchport mode trunk
!
!
IPS:
IPS# conf t
IPS(config)# service interface
IPS(config-int)# physical-interfaces GigabitEthernet0/0
IPS(config-int-phy)# subinterface-type inline-vlan-pair
IPS(config-int-phy-inl)# subinterface 1
IPS(config-int-phy-inl-sub)# vlan1 10
IPS(config-int-phy-inl-sub)# vlan2 1000
IPS(config-int-phy-inl-sub)# exit
IPS(config-int-phy-inl)# exit
IPS(config-int-phy)# admin-state enabled
IPS(config-int-phy)# exit
IPS(config-int)# exit
Apply Changes:?[yes]: yes
!
!!!Make sure to apply it to a sensor or traffic wont flow.
!
IPS(config)# service analysis-engine
IPS(config-ana)# virtual-sensor vs0
IPS(config-ana-vir)# physical-interface GigabitEthernet0/0
subinterface-number 1
IPS(config-ana-vir)# exit
IPS(config-ana)# exit
Apply Changes:?[yes]: yes
IPS(config)#

Gui Version.