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Prasad Calyam, Chang-Gun Lee, Phani Kumar Arava, Dima Krymskiy, David Lee, “OnTimeMeasure: A Scalable Framework for scheduling active measurements”, IEEE E2EMON, 2005. Prasad Calyam, Dima Krymskiy, Mukundan Sridharan, Paul Schopis, "Active and Passive Measurements on Campus, Regional and National Network Backbone Paths", IEEE International Conference on Computer Communications and Networks (ICCCN), 2005. Prasad Calyam, C.G.Lee, Phani Kumar Arava, Dima Krymskiy, “Enhanced EDF Scheduling Algorithms for Orchestrating Network-wide Active Measurements”, IEEE Real-Time Systems Symposium (RTSS),

Prasad Calyam, Chang-Gun Lee, Eylem Ekici, Mark Haffner, Nathan Howes, "Orchestrating Network-wide Active Measurements for Supporting Distributed Computing Applications", IEEE Transactions on Computers Journal (TC), 2006. Prasad Calyam, Ananth Devulapalli "Modeling of Multi-resolution Active Network Measurement Time-series", IEEE Workshop on Network Measurements (WNM), 2008. We are leveraging our experiences in deploying and maintaining the TBI testbed to improve upon the functionalities of our ActiveMon software.įigure: TBI Network Weathermap Screenshotįigure: ActiveMon Route-changes Visualization Documents Netflow, SNMP and syslog) along the different network paths within TBI. Further, we have compared the long-term active measurements data with passive measurements (e.g. The weather-map has also been useful in the analysis of short, medium and long-term (over a six-month period) network performance trends. We have also developed a "network weathermap” to visualize the networking monitoring data collected from TBI.

The anomalies studied include those due to route changes, bandwidth mis-configurations and mis-reporting of measurement tools resulting from resource conflicts. Using the network monitoring data collected from TBI, we have developed advanced data mining techniques to empirically correlate the occurrence of network events to anomalies found in corresponding network measurements data. The testbed includes network paths of OARnet, OSCnet and Internet2 Abilene, connecting- The Ohio State University, University of Cincinnati, University of Toledo, Wright State University, Southern State Community College, Texas A&M University and North Carolina State University. We have deployed our ActiveMon software in a large-scale network monitoring testbed called “OSCnet Beacon Infrastructure” (TBI).