Trajectory Sampling for Direct Traffic Observation

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Executive Summary

Traffic measurement is a critical component for the control and engineering of communication networks. They argue that traffic measurement should make it possible to obtain the spatial flow of traffic through the domain, i.e., the paths followed by packets between any ingress and egress point of the domain. Most resource allocation and capacity planning tasks can benefit from such information. Also, traffic measurements should be obtained without a routing model and without knowledge of network state. This allows the traffic measurement process to be resilient to network failures and state uncertainty. This paper proposes a method that allows the direct inference of traffic flows through a domain by observing the trajectories of a subset of all packets traversing the network.

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