Abstract
Optical transmission systems exist ubiquitously in data center, access, metro and long-haul networks, and are divided into different autonomous domains based on different carrier ownership, network equipment manufacturers, geographical location, etc. Software-defined Internet exchange methods have been proposed to solve the long-standing problem of inter-domain routing and enable control flexibility in layer-3 networks, and software-defined networking (SDN) has also been introduced to optical networks and much progress has been made to enhance optical network control capability. In this paper, we investigate a transparent software-defined exchange (tSDX) with real-time impairment-aware service level agreement (SLA) guarantees for multidomain optical networks. An SDN-based hierarchical control architecture is designed and implemented. End-to-end, impairment-aware wavelength path provisioning is experimentally realized in a multidomain network. Real-time optical signal to noise ratio based optical performance monitoring, together with inter-domain negotiation enabled by our proposed SDN control architecture, serves as an SLA guarantee for 100-Gbps polarization-multiplexed quadrature phase-shift keying signals in dense wavelength division multiplexed transmission.
© 2017 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription