In our research lab at UPC we’re working on network monitoring technologies (see http://loadshedding.ccaba.upc.edu). When publishing research papers in our area, it is important to test the results of the proposed techniques on links that are representative enough of the overall traffic of the Internet (or at least, to try to test the techniques under realistic load, as opposed to e.g. small LANs or synthetic traffic traces).
We are testing our techniques on an anonymized copy of the traffic that traverses the link that connects (at least part of) the Technical University of Catalonia (UPC) network to the Internet. This guarantees the privacy of the users but it still lets us observe the trends and main characteristics of the traffic (i.e. number of flows, packets per second, total bandwidth usage) .
To inspect the traffic we are using CoMo and appmon (a network monitoring tool produced in the LOBSTER European project). This application analyzes the input traffic stream and can identify several popular applications or protocols that use most of the bandwidth nowadays (p2p, http, smtp..). It outputs a per-application aggregate rrdtool graph plus a list of the addresses that are consuming the most resources (note that the IP addresses are anonymized).
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