Nkosi, Mpho CMamushiane, LusaniLysko, Albert AEngelbrecht, APJohnson, D2019-10-092019-10-092019-08Nkosi, M.C. et al. 2019. Towards programmable on-demand lightpath services: Current state of the art and open research areas. IET Networks: doi: 10.1049/iet-net.2018.50402047-49622047-4954doi: 10.1049/iet-net.2018.5040http://hdl.handle.net/10204/11165This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/)With emerging programmable network architectures gaining momentum in the networking industry, it is necessary to look at how the services currently offered on traditional network architectures can be fully migrated to the programmable networks. In traditional networks, lightpaths are used for providing high-bandwidth consuming services that are usually sensitive to delay. Lightpath scheduling requires admission control mechanisms, routing and wavelength assignment algorithms, and protection and restoration mechanisms that ensure reliable and efficient lightpath routing. Software defined networking (SDN) is the emerging programmable network architecture that paves the way for easier network management and configuration by using application programming interfaces. The state-of-the-art in lightpath routing for wavelength division multiplexing networks focusing on lightpath scheduling, routing, protection and restoration in optical software defined networks is surveyed. Moreover, open research issues for SDN lightpath routing solution are discussed.enLightpathOptical networkSoftware Defined NetworkSDNWavelength Division MultiplexingWDMArticleNkosi, M. C., Mamushiane, L., Lysko, A. A., Engelbrecht, A., & Johnson, D. (2019). Towards programmable on-demand lightpath services: Current state of the art and open research areas. http://hdl.handle.net/10204/11165Nkosi, Mpho C, Lusani Mamushiane, Albert A Lysko, AP Engelbrecht, and D Johnson "Towards programmable on-demand lightpath services: Current state of the art and open research areas." (2019) http://hdl.handle.net/10204/11165Nkosi MC, Mamushiane L, Lysko AA, Engelbrecht A, Johnson D. Towards programmable on-demand lightpath services: Current state of the art and open research areas. 2019; http://hdl.handle.net/10204/11165.TY - Article AU - Nkosi, Mpho C AU - Mamushiane, Lusani AU - Lysko, Albert A AU - Engelbrecht, AP AU - Johnson, D AB - With emerging programmable network architectures gaining momentum in the networking industry, it is necessary to look at how the services currently offered on traditional network architectures can be fully migrated to the programmable networks. In traditional networks, lightpaths are used for providing high-bandwidth consuming services that are usually sensitive to delay. Lightpath scheduling requires admission control mechanisms, routing and wavelength assignment algorithms, and protection and restoration mechanisms that ensure reliable and efficient lightpath routing. Software defined networking (SDN) is the emerging programmable network architecture that paves the way for easier network management and configuration by using application programming interfaces. The state-of-the-art in lightpath routing for wavelength division multiplexing networks focusing on lightpath scheduling, routing, protection and restoration in optical software defined networks is surveyed. Moreover, open research issues for SDN lightpath routing solution are discussed. DA - 2019-08 DB - ResearchSpace DP - CSIR KW - Lightpath KW - Optical network KW - Software Defined Network KW - SDN KW - Wavelength Division Multiplexing KW - WDM LK - https://researchspace.csir.co.za PY - 2019 SM - 2047-4962 SM - 2047-4954 T1 - Towards programmable on-demand lightpath services: Current state of the art and open research areas TI - Towards programmable on-demand lightpath services: Current state of the art and open research areas UR - http://hdl.handle.net/10204/11165 ER -