This small freeware tool shows short term statistics about the network data packets passing a local network card. Using the Packet Sniffer of PRTG Traffic Grapher it counts the number of packets passing the network card and calculates the current bandwidth as well as the average packet size. For the last 20 minutes these stats are shown in a graph.
For more information and a download link please visit:
www.paessler.com/download/freeware/snifferstat