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Monitoring the quality of service in a multi-domain network allows providers to ensure the control of multi-domain service performance. A multi-domain service is a service that crosses multiple domains. In this paper, the authors propose several mechanisms for fault detection and fault localization. A fault is detected when an end-to-end contract is not respected. Faulty domains are domains that do not fulfill their Quality of Service (QoS) requirements. Their three proposed Fault Detection and Localization Mechanisms (FDLM) depend on the export method used. These export methods define how the measurement results are exported for analysis.
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