Abstract: The subject matter described herein includes methods, systems and computer media for monitoring communications networks using cross-correlation of packet flows. One method for monitoring a communications network using cross-correlation of packet flows includes receiving a plurality of packets copied from a communications network. The method further includes classifying the packets into flows. The method further includes, for at least one of the flows, generating a trace value sequence, where the trace value sequence is sequence of values that characterizes the flow according to a cross-correlation metric. The method further includes performing a frequency domain cross-correlation for the at least one flow using the trace value sequence. The method further includes outputting an indication of a network or flow characteristic based on results of the cross-correlation.

Abstract: The subject matter described herein includes methods, systems and computer media for monitoring communications networks using cross-correlation of packet flows. One method for monitoring a communications network using cross-correlation of packet flows includes receiving a plurality of packets copied from a communications network. The method further includes classifying the packets into flows. The method further includes, for at least one of the flows, generating a trace value sequence, where the trace value sequence is sequence of values that characterizes the flow according to a cross-correlation metric. The method further includes performing a frequency domain cross-correlation for the at least one flow using the trace value sequence. The method further includes outputting an indication of a network or flow characteristic based on results of the cross-correlation.