Unidirectional Ethernet (UDE) Overview
Unidirectional Ethernet uses only one strand of fiber for either transmitting or receiving one-way traffic, instead of two strands of fiber.
With unidirectional links either transmit or receive traffic for applications, such as video streaming, where most traffic sent is unacknowledged.You can create a unidirectional link by configuring ports equipped with bidirectional transceivers to unidirectionally transmit or receive traffic. You can use UDE when there is no appropriate unidirectional transceiver available. For example, without supported transmit-only transceivers, you must configure transmit-only links with software-based UDE.