tSDX: Enabling Impairment-Aware All-Optical Inter-Domain Exchange
2017; Institute of Electrical and Electronics Engineers; Volume: 36; Issue: 1 Linguagem: Inglês
10.1109/jlt.2017.2761355
ISSN1558-2213
AutoresYao Li, Weiyang Mo, Shengxiang Zhu, Yiwen Shen, Jiakai Yu, Payman Samadi, Keren Bergman, Daniel C. Kilper,
Tópico(s)Optical Network Technologies
ResumoOptical 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.
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