| 摘要 |
The present invention provides an attribute value sampling device that obtains communication path establishing control information transmitted and received between data transfer devices, and sets monitoring on the basis of the communication path establishing control information. The attribute value sampling device obtains control information for establishing the communication path sent between the data processors, and extracts setting information relative to the obtaining the attribute value from the obtained communication path establishing control information, and obtains the attribute value from information passing through the path by using the extracted setting information.
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