VC + + traffic control procedures, record selection interface number, interface number for the interface to get the traffic interfaceNumber. Using PDH technology to measure packet network card, similar to the 360 traffic monitoring tool, you can observe the changes in Internet traffic in real time, including the upload and download traffic flow.-VC++ traffic control procedures, record selection interface number, interface number for the interface to get the traffic interfaceNumber. Using PDH technology to measure packet network card, similar to the 360 traffic monitoring tool, you can observe the changes in Internet traffic in real time, including the upload and download traffic flow.