Design and implementation of optical transport network models with path computation

SDN (Software Defined Networking) controllers can manage various network services through abstraction of physical layer functionality. It can also be applied to optical transport networks. We already implemented T-SDN(Transport SDN) models and controllers especially in MPLS-TP(Multiprotocol Label Switching — Transport Profile) networks, based on OpenDaylight platform. Now, we need to expand another networks controlled by expanded T-SDN controllers. This paper proposes the expanded OTN(Optical Transport Network) models. With using proposed OTN models, we can make optical transport network services easily.