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OSDI '04 — Abstract
Pp. 167–182 of the Proceedings
PlanetSeer: Internet Path Failure Monitoring and Characterization in Wide-Area Services
Ming Zhang, Chi Zhang, Vivek Pai, Larry Peterson, and Randy Wang, Princeton University
Abstract
Detecting network path anomalies generally requires examining large
volumes of traffic data to find misbehavior. We observe that
wide-area services, such as peer-to-peer systems and content
distribution networks, exhibit large traffic volumes, spread over
large numbers of geographically-dispersed endpoints. This makes them
ideal candidates for observing wide-area network behavior.
Specifically, we can combine passive monitoring of wide-area traffic to
detect
anomalous network behavior, with active probes from multiple nodes to
quantify and characterize the scope of these anomalies.
This approach provides several advantages over other techniques: (1)
we obtain more complete and finer-grained views of failures since the
wide-area nodes already provide geographically diverse vantage points;
(2) we incur limited additional measurement cost since most active
probing is initiated when passive monitoring detects oddities; and (3)
we detect failures at a much higher rate than other researchers have
reported since the services provide large volumes of traffic to sample.
This paper shows how to exploit this combination of wide-area traffic,
passive monitoring, and active probing, to both understand path
anomalies and to provide optimization opportunities for the host
service.
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