Dynamic LightPath Allocation in WDM Networks Using an SDN Controller

Core wavelength division multiplexed (WDM) networks are widely used to provide fixed physical connectivity and bandwidth to the logically connected upper electronic layer devices using optical signals. However, growing demands for bandwidth-intensive applications and cloud-based services push optica...

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Autores principales:	Sadia Qureshi, Robin M. Braun
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Wavelength division multiplexed network (WDM) software defined networking (SDN) OpenFlow protocol dynamic path allocation optical cross connect (OXC) Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/e0a71f29c49647879e25e6c9084f3696
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spelling	oai:doaj.org-article:e0a71f29c49647879e25e6c9084f36962021-11-18T00:07:51ZDynamic LightPath Allocation in WDM Networks Using an SDN Controller2169-353610.1109/ACCESS.2021.3124522https://doaj.org/article/e0a71f29c49647879e25e6c9084f36962021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9597539/https://doaj.org/toc/2169-3536Core wavelength division multiplexed (WDM) networks are widely used to provide fixed physical connectivity and bandwidth to the logically connected upper electronic layer devices using optical signals. However, growing demands for bandwidth-intensive applications and cloud-based services push optical networks carriers’ to provide scalable and flexible services dynamically. Software defined networking (SDN) has the potential to program electronic layers by dynamically controlling and managing network resources using SDN controller applications. SDN’s on-demand characteristics combined with the optical circuit-switching can enable optical network service providers to customize their service provisioning dynamically to the user’s requirements. They enable fast provision of new services, and minimize under-utilization of resources. In this paper, a model is proposed to bring the dynamic allocation of resources which is a layer 2+ functionality, to the WDM layer using SDN. A middle-ware application based on SDN and OpenFlow for dynamic switching and provisioning of optical service is presented. The application abstracts the optical layer’s connectivity, also accounting for the switching constraints. Details of the model’s implementation are discussed considering classically used equipment and its performance in terms of CPU and memory utilization, topology emulation time, and latency is evaluated. Finally, the application is tested with a Cisco layer one switch. Performance results show that the latency doubles when increasing the number of fibers of an optical cross connect from 5 to 7 and keeping wavelengths equal to 8, with Clos fabric topology.Sadia QureshiRobin M. BraunIEEEarticleWavelength division multiplexed network (WDM)software defined networking (SDN)OpenFlow protocoldynamic path allocationoptical cross connect (OXC)Electrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 148546-148557 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Wavelength division multiplexed network (WDM) software defined networking (SDN) OpenFlow protocol dynamic path allocation optical cross connect (OXC) Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Wavelength division multiplexed network (WDM) software defined networking (SDN) OpenFlow protocol dynamic path allocation optical cross connect (OXC) Electrical engineering. Electronics. Nuclear engineering TK1-9971 Sadia Qureshi Robin M. Braun Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
description	Core wavelength division multiplexed (WDM) networks are widely used to provide fixed physical connectivity and bandwidth to the logically connected upper electronic layer devices using optical signals. However, growing demands for bandwidth-intensive applications and cloud-based services push optical networks carriers’ to provide scalable and flexible services dynamically. Software defined networking (SDN) has the potential to program electronic layers by dynamically controlling and managing network resources using SDN controller applications. SDN’s on-demand characteristics combined with the optical circuit-switching can enable optical network service providers to customize their service provisioning dynamically to the user’s requirements. They enable fast provision of new services, and minimize under-utilization of resources. In this paper, a model is proposed to bring the dynamic allocation of resources which is a layer 2+ functionality, to the WDM layer using SDN. A middle-ware application based on SDN and OpenFlow for dynamic switching and provisioning of optical service is presented. The application abstracts the optical layer’s connectivity, also accounting for the switching constraints. Details of the model’s implementation are discussed considering classically used equipment and its performance in terms of CPU and memory utilization, topology emulation time, and latency is evaluated. Finally, the application is tested with a Cisco layer one switch. Performance results show that the latency doubles when increasing the number of fibers of an optical cross connect from 5 to 7 and keeping wavelengths equal to 8, with Clos fabric topology.
format	article
author	Sadia Qureshi Robin M. Braun
author_facet	Sadia Qureshi Robin M. Braun
author_sort	Sadia Qureshi
title	Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
title_short	Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
title_full	Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
title_fullStr	Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
title_full_unstemmed	Dynamic LightPath Allocation in WDM Networks Using an SDN Controller
title_sort	dynamic lightpath allocation in wdm networks using an sdn controller
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/e0a71f29c49647879e25e6c9084f3696
work_keys_str_mv	AT sadiaqureshi dynamiclightpathallocationinwdmnetworksusingansdncontroller AT robinmbraun dynamiclightpathallocationinwdmnetworksusingansdncontroller
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Dynamic LightPath Allocation in WDM Networks Using an SDN Controller

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