Business Risk-based Redundancy Points Identification in Synchronous Digital Hierarchy Optical Networks

Locating redundancy points in a Synchronous Digital Hierarchy optical network is a challenging task for service managers. Here, we present a model capable of locating suitable points for the application of asset redundancy to reduce disruptions to the operation of the network, based on the risk to the business. The model was implemented by means of an algorithm called Asset Redundancy Location Indicator (ASP), which performs fault analysis based on the dependence between the elements of the network and the risk of failure. The output of the model allows network administrators to make better decisions when defining critical network redundancy points. A case study was carried out using the ARPA2 reference network. The paper also reports on the case study results.