To create an inline VLAN pair for an interface that is in promiscuous mode, you must remove the interface from the virtual sensor and then create the inline VLAN pair. If the interface is already paired or in promiscuous mode, you receive an error message when you try to create an inline VLAN pair.If your sensor does not support inline VLAN pairs, the VLAN Pairs pane is not displayed. AIM-IPS, AIP-SSM, and NME-IPS do not support inline VLAN pairs.