terena networking conference 2010


Experience deploying and using cross-domain network monitoring on ESnet

ESnet is actively promoting the deployment of perfSONAR at sites doing large data transfers, as well as in the networks that are involved in the path, in order to characterize each segment of the end-to-end path. Our experience is that on almost all of the paths where perfSONAR has been deployed, perfSONAR has revealed previously undetected significant bandwidth limiting problems, many of which are relatively easily resolved after being identified. These are all in the category of "soft failures", where the network is up, but throughput on the path is 3-10x slower than expected.
This talk will describe our experience deploying perfSONAR, how we have configured it, and the types of network problems we have found in the process.



  • Brian L Tierney
  • Joe Metzger