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Port mirroring for sampling measurement of network flows

  • US 9,203,711 B2
  • Filed: 09/24/2013
  • Issued: 12/01/2015
  • Est. Priority Date: 09/24/2013
  • Status: Active Grant
First Claim
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1. A method, in a data processing system, for analyzing data traffic through a network, the method comprising:

  • sampling data packets of a data flow through a normal port of a network forwarding device of the network, wherein the sampling is performed at least by configuring the network forwarding device to implement port mirroring of the normal port to a designated mirror port of the network forwarding device;

    forwarding sampled data packets, copied to the mirror port by virtue of the port mirroring, to a collector computing device;

    processing, by the collector computing device, the sampled data packets to analyze the data flow through the normal port of the network forwarding device; and

    performing, by the collector computing device, an operation based on results of the analysis, wherein a number of mirror ports and a number of normal ports in the network forwarding device are configured according to a desired sampling size or desired sampling rate.

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