Abstract

The need of introducing interoperability in the transport network segment has motivated the emergence of several open initiatives and standardization efforts for the development of different interfaces to allow Software Defined Network (SDN) controllers manage and control the network devices. Optical disaggregation in particular aims the introduction of standard device-level interfaces in the optical terminals and line-systems to ‘open’ them from vendor lock-in situations, allowing an interoperable ecosystem in the optical network's transport segment. In this article, it is firstly presented the Software Defined Transport Network (SDTN) architecture, as the control and management framework to build a L0-L3 multi-layer, multi-technology transport network, enabling end-to-end network service delivery. Later, we introduce the partially disaggregated network architecture proposed, including the technical assessment of the topology discovery and resilience service provisioning use cases, by providing a low-level description of the information models employed and the translation between models. To conclude, a proof-of-concept of multi-layer service provisioning over resilient disaggregated multi-vendor testbed is presented, including the results obtained in the experimental demonstration presented in last 2019 Optical Fiber Conference (OFC).

Resilience enhancement in open network–cloud ecosystems through disaggregation and cooperation [Invited]

Sugang Xu, Kiyo Ishii, Noboru Yoshikane, Subhadeep Sahoo, Sifat Ferdousi, Masaki Shiraiwa, Yusuke Hirota, Takehiro Tsuritani, Massimo Tornatore, Yoshinari Awaji, Shu Namiki, and Biswanath Mukherjee
J. Opt. Commun. Netw. 16(2) A105-A117 (2024)

TAPI-enabled SDN control for partially disaggregated multi-domain (OLS) and multi-layer (WDM over SDM) optical networks [Invited]

C. Manso, R. Muñoz, N. Yoshikane, R. Casellas, R. Vilalta, R. Martínez, T. Tsuritani, and I. Morita
J. Opt. Commun. Netw. 13(1) A21-A33 (2021)

Advances in SDN control and telemetry for beyond 100G disaggregated optical networks [Invited]

Ramon Casellas, Ricardo Martínez, Ricard Vilalta, Raul Muñoz, Alfredo González-Muñiz, Oscar González de Dios, and Juan-Pedro Fernández-Palacios
J. Opt. Commun. Netw. 14(6) C23-C37 (2022)

Software-Defined Optical Networks and Network Abstraction With Functional Service Design [Invited]

Xiaoyuan Cao, Noboru Yoshikane, Ion Popescu, Takehiro Tsuritani, and Itsuro Morita
J. Opt. Commun. Netw. 9(4) C65-C75 (2017)

Field Trial of Bandwidth on Demand Services Based on Hierarchical Control Over Multi-Domain OTN Networks

Chengliang Zhang, Ruiquan Jing, Junjie Li, Yiran Ma, Xiaoli Huo, Yongli Zhao, and Jie Zhang
J. Opt. Commun. Netw. 7(11) 1057-1063 (2015)