What , Where , and When : Software Fault Localization for SDN

  title={What , Where , and When : Software Fault Localization for SDN},
  author={Robert Colin Butler Scott and Andreas Wundsam and Kyriakos Zarifis and Scott Shenker},
In this paper we leverage the structure of the SDN software stack to automate the process of troubleshooting networks. We present two techniques for programmatically localizing the root cause of network problems: crosslayer correspondence checking infers what problems exist in the network, and where in the control software the problem first developed; and simulation-based causal inference infers when the triggering event(s) occurred. We evaluated our tools on three popular SDN platforms… CONTINUE READING
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