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Active monitoring: We have developed an active network monitoring toolkit (IEPM-BW) that provides network measurements, data archiving, analysis, reporting and visualization. This has been deployed and making regular measurements from the following major LHC related sites: CERN, BNL, Caltech, FNAL, SLAC, and Taiwan. We also have about 45 locations worldwide that are being monitored from these sites. We use a selection of probes based on the quality and interest in the path being measured utilizing metrics such as network routes, round trip time, one-way delays, available bandwidth and achievable throughput. We are working closely with the LHC-ATLAS physicists, the LHC Optical Private Network (LHCOPN) working group, BNL Terapaths, CERN and UltraLight to install the toolkit and ensure the data and presentations meet their needs.
With regards to cross-domain end-to-end MPLS circuits, we are currently developing mechanisms to automatically schedule active measurements using IEPM-BW, Terapaths and OSCARS to compare the performance of complete end-to-end QoS paths against normal production services.
Deployment of IEPM LHC monitoring, red dots show monitor sites, green show monitored sites
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