Devices support single-leg cross-connect and unidirectional cross-connect features.
Single-leg cross-connect feature allows configuration of single entry in the cross-connect. The entry can be either VNF interface or a virtual interface. You can configure the other entry in the cross-connect at any later point of time.
Unidirectional cross-connect feature allows the traffic to be forwarded conditionally or unconditionally in a single direction. Traffic flow in the opposite (other) direction follows the MAC-based forwarding rule.