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Knowledge of the up-to-date network bandwidth utilization is crucial for numerous network management tasks, including traffic engineering and verifying QoS guarantees for end-user applications. Deploying network measurement and network monitoring tools at key network locations emerged as a main strategy in gathering such information. However, this approach causes the generation of a significant amount of traffic which shares the same network infrastructure with user applications. From the point of view of these other services this traffic is an overhead since it is of no immediate interest at the user level.
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