Evaluation of Flex-Grid architecture for NREN optical networks

Ioan Turus, Josva Kleist, Anna Manolova Fagertun

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The paper presents an in-depth and structured evaluation of the impact that Flex-Grid technology reveals within current NRENs’ core optical networks. The evaluation is based on simulations performed with OPNET Modeler tool and considers NORDUnet as well as a normalized GEANT core optical network as reference topologies. Flex-Grid technology is suggested as a solution to cope with the different challenges in NREN transport networks such as traffic increase and introduction of novel physical layer services. Flex-Grid refers to narrow channel spacing values and requires a control plane which would enable all benefits given by the flexible spectrum allocation. GMPLS is considered in our implementation and the simulated scenarios follow the goal of answering the question: Do NRENs benefit from the introduction of Flex-Grid architecture?
Original languageEnglish
Title of host publicationProceedings of TNC2014
Number of pages3
Publication date2014
Publication statusPublished - 2014
EventTERENA Networking Conference 2014 - Dublin, Ireland
Duration: 19 May 201422 May 2014


ConferenceTERENA Networking Conference 2014


  • Flex - Grid
  • Control plane
  • Evaluation
  • Photonic Services

Cite this

Turus, I., Kleist, J., & Fagertun, A. M. (2014). Evaluation of Flex-Grid architecture for NREN optical networks. In Proceedings of TNC2014