Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures

Autores
González-Montoro, Nehuén; Finochietto, Jorge M.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Survivability of optical networks is considered among the most critical problems that telecommunications operators need to solve at a reasonable cost. Survivability can be enhanced by increasing the amount of network links and its spare capacity, nevertheless this deploys more resources on the network that will be used only under failure scenarios. In other words, these spare resources do not generate any direct profit to network operators as they are reserved to route only disrupted traffic. In particular, the case of dual link failures on fiber optic cables (i.e., fiber cuts) has recently received much attention as repairing these cables typically requires much time, which then increases the probability of a second failure on another link of the network. In this context, survivability schemes can be used to recover the network from a dual link failure scenario. In this work, we analyze the case of protection and restoration schemes, which are two well-known recovery strategies. The former is simpler to implement as it considers a fixed set of backup paths for all failure scenarios; however, it cannot take into account the spare capacity released by disrupted connections. Instead, the latter computes the best recovery path considering not only the spare capacity but also the released one due to failures. Achieving 100% survivability (i.e., recovery from all possible dual link failures) requires a triconnected network, where three disjoint paths for each connection are required. Since these networks can become extremely expensive since they can require a huge number of network links (i.e., fibers connections), a more realistic case of non-triconnected networks is assumed. In these networks, full network recovery is not be feasible, but achieving the maximum possible survivability is desired. Spare capacity can then be allocated to existing network links, which represents the actual cost of the survivability. We propose optimization models that take into account these different recovery strategies, and demonstrate that restoration has the potential to provide a much better recovery capability with almost the same amount of spare capacity required in protection schemes.
https://ieeexplore.ieee.org/document/8226411/
Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Telecomunicaciones
Materia
Tecnología
Capacidad de supervivencia
Ingeniería
Tecnología
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/556296

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network_name_str Repositorio Digital Universitario (UNC)
spelling Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link FailuresGonzález-Montoro, NehuénFinochietto, Jorge M.TecnologíaCapacidad de supervivenciaIngenieríaTecnologíaFil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.Survivability of optical networks is considered among the most critical problems that telecommunications operators need to solve at a reasonable cost. Survivability can be enhanced by increasing the amount of network links and its spare capacity, nevertheless this deploys more resources on the network that will be used only under failure scenarios. In other words, these spare resources do not generate any direct profit to network operators as they are reserved to route only disrupted traffic. In particular, the case of dual link failures on fiber optic cables (i.e., fiber cuts) has recently received much attention as repairing these cables typically requires much time, which then increases the probability of a second failure on another link of the network. In this context, survivability schemes can be used to recover the network from a dual link failure scenario. In this work, we analyze the case of protection and restoration schemes, which are two well-known recovery strategies. The former is simpler to implement as it considers a fixed set of backup paths for all failure scenarios; however, it cannot take into account the spare capacity released by disrupted connections. Instead, the latter computes the best recovery path considering not only the spare capacity but also the released one due to failures. Achieving 100% survivability (i.e., recovery from all possible dual link failures) requires a triconnected network, where three disjoint paths for each connection are required. Since these networks can become extremely expensive since they can require a huge number of network links (i.e., fibers connections), a more realistic case of non-triconnected networks is assumed. In these networks, full network recovery is not be feasible, but achieving the maximum possible survivability is desired. Spare capacity can then be allocated to existing network links, which represents the actual cost of the survivability. We propose optimization models that take into account these different recovery strategies, and demonstrate that restoration has the potential to provide a much better recovery capability with almost the same amount of spare capacity required in protection schemes.https://ieeexplore.ieee.org/document/8226411/Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.Telecomunicaciones2017info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf978-1-5386-3057-0http://hdl.handle.net/11086/556296enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-09-29T13:44:26Zoai:rdu.unc.edu.ar:11086/556296Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-09-29 13:44:26.528Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
title Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
spellingShingle Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
González-Montoro, Nehuén
Tecnología
Capacidad de supervivencia
Ingeniería
Tecnología
title_short Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
title_full Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
title_fullStr Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
title_full_unstemmed Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
title_sort Survivability Analysis on Non-Triconnected Optical Networks under Dual-Link Failures
dc.creator.none.fl_str_mv González-Montoro, Nehuén
Finochietto, Jorge M.
author González-Montoro, Nehuén
author_facet González-Montoro, Nehuén
Finochietto, Jorge M.
author_role author
author2 Finochietto, Jorge M.
author2_role author
dc.subject.none.fl_str_mv Tecnología
Capacidad de supervivencia
Ingeniería
Tecnología
topic Tecnología
Capacidad de supervivencia
Ingeniería
Tecnología
dc.description.none.fl_txt_mv Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Survivability of optical networks is considered among the most critical problems that telecommunications operators need to solve at a reasonable cost. Survivability can be enhanced by increasing the amount of network links and its spare capacity, nevertheless this deploys more resources on the network that will be used only under failure scenarios. In other words, these spare resources do not generate any direct profit to network operators as they are reserved to route only disrupted traffic. In particular, the case of dual link failures on fiber optic cables (i.e., fiber cuts) has recently received much attention as repairing these cables typically requires much time, which then increases the probability of a second failure on another link of the network. In this context, survivability schemes can be used to recover the network from a dual link failure scenario. In this work, we analyze the case of protection and restoration schemes, which are two well-known recovery strategies. The former is simpler to implement as it considers a fixed set of backup paths for all failure scenarios; however, it cannot take into account the spare capacity released by disrupted connections. Instead, the latter computes the best recovery path considering not only the spare capacity but also the released one due to failures. Achieving 100% survivability (i.e., recovery from all possible dual link failures) requires a triconnected network, where three disjoint paths for each connection are required. Since these networks can become extremely expensive since they can require a huge number of network links (i.e., fibers connections), a more realistic case of non-triconnected networks is assumed. In these networks, full network recovery is not be feasible, but achieving the maximum possible survivability is desired. Spare capacity can then be allocated to existing network links, which represents the actual cost of the survivability. We propose optimization models that take into account these different recovery strategies, and demonstrate that restoration has the potential to provide a much better recovery capability with almost the same amount of spare capacity required in protection schemes.
https://ieeexplore.ieee.org/document/8226411/
Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Fil: Finochietto, Jorge M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
Telecomunicaciones
description Fil: González-Montoro, Nehuén. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina.
publishDate 2017
dc.date.none.fl_str_mv 2017
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info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/documentoDeConferencia
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dc.identifier.none.fl_str_mv 978-1-5386-3057-0
http://hdl.handle.net/11086/556296
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dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
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instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
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instname_str Universidad Nacional de Córdoba
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repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
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