DECON: Decentralized Coordination for Large-Scale Flow Monitoring

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Monitoring at the flow level is crucial to ensure the correct operation of networks. Any sizable network relies on a number of monitoring probes, both to provide different observation points but also to scale to the ever-increasing number of flows that go through it. This situation gives rise to the difficult problem of assigning monitoring of flows to the available probes so that the network-wide coverage of flows (i.e., the number of flows actually monitored) is maximized. In this paper, the authors introduce DECON, a decentralized and scalable coordination system aimed at solving this assignment problem.