Leipzig-I Trace Data - Illustrated |
|
|||
|
This is a continuous 5-day GPS-synchronised IP header trace taken with a pair of DAG3.2 cards at the University of Leipzig Internet access link. The timekeeping precision of the DAG timestamping engine, called the DUCK, has been monitored during the entire duration of the trace and is guaranteed to be less than 1 microsecond to UTC at all times. The tap is installed at an OC3 Packet-over-Sonet (PoS) link running at 155.53Mbits/s. Trace records are of 64 bytes fixed length, containing full TCP/IP and UDP/IP headers in most cases. To process DAG traces, a toolkit called dagtools has been developed and is available from the DAG software Web site. The toolkit contains a range of tools from simple dump utilities to view the content of the trace, to converters (tcpdump/libpcap) and statistic generators.
Data is available at the following locations: |
|
