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Support for incident management in optical networks through critical points identification
Soporte de gestión de incidentes de redes ópticas a través de la identificación de puntos críticos
DOI:
https://doi.org/10.15446/ing.investig.v39n1.71346Keywords:
Fault Management, Optical Networks, Service Management, Risk Management, Business-driven IT Management. (en)Gestión de fallas, Redes ópticas, Administración de servicios, Gestión de riesgos, Gestión de TI impulsada por los negocios. (es)
In incident management for optical networks, when a fault or event occurs, a network element will often send a notification, in the form of an “alarm”, to operators and managers. Alarms contain valuable information to support the fault management process at the operating level, because it is a persistent indication of a fault. Alarms usually clear only with the triggering of the solution for its cause. To mitigate business risks related to faults in optical networks, service managers need to estimate the impact of a network fault in relation to business needs. In optical networks, identifying redundancy points of high-impact on the network is still a challenge for managers. They often rely on their own experience to prioritize points that possibly need to have redundancy in those networks. This work presents a simulation model capable of locating suitable points for the application of asset redundancy to reduce optical network disruptions, based on business risk. The model is implemented in a software tool and then used in a case study of two reference networks, whose elements may fail according to a realistic failure scenario. Results of the study allow face validity with preliminary evidence that the model is useful to support incident management in optical networks.
En la gestión de incidentes de redes ópticas, cuando ocurre una falla o evento, generalmente un componente de la red envía una notificación a los operadores y gerentes. Las alarmas contienen información importante para respaldar el proceso de gestión de fallas a nivel operativo, porque es una indicación persistente de una falla que se borra solo con la solución de condición de disparo. Para mitigar los riesgos comerciales relacionados con las fallas en las redes ópticas, los administradores de servicios deben estimar el impacto de una falla de red en relación con las necesidades del negocio. En las redes ópticas, la identificación de puntos de redundancia de alto impacto de red todavía es un desafío para los gerentes. Usualmente, estos gerentes confían en su propia experiencia para priorizar puntos que posiblemente deban tener redundancia en esas redes. En este trabajo, presentamos una evaluación de un modelo de simulación, capaz de localizar puntos adecuados para la aplicación de redundancia de activos y así reducir las interrupciones de la red óptica, en función del riesgo comercial. El modelo se implementó en una herramienta de software y se procedió a un estudio de caso que incluye dos escenarios de simulación de redes de referencia, con resultados prometedores.
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