WITS: Auckland IV
| Trace Format | Legacy ATM, captured using a DAG 3 card. |
| Volume on Disk | 63 GB |
| Number of Traces | 94 |
| Capture Start (Local) | Tue Feb 20 21:01:22 2001 |
| Capture End (Local) | Mon Apr 9 22:31:44 2001 |
| Total Duration | 45 Days, 17 Hours, 29 Minutes and 59 Seconds |
| Packets Captured | 3,157 million |
| Total Traffic | 1,269 GB |
| Contiguity | Contiguous from March 1 onwards, missing one VPI/VCI pair in earlier traces |
| Snapping Method | Fixed-length 64 byte truncation. |
| Rotation Policy | Daily rotation at 1pm UTC |
| Anonymization | IP addresses replaced using one-to-one mapping into 10.*.*.* address space. Any payload that has not been truncated is zeroed. |
| Download | Link |
| Download | Link (RIPE repository) |
This is a continuous 6 and a half week GPS-synchronized IP header trace taken using a pair of DAG 3 cards at the University of Auckland Internet access link.
The tap was installed at an OC3 link carrying various Classical-IP-over-ATM, LANE and POTS services. The trace contains all the IP headers of a pair of redundant VPI/VCI's, which connect the University to its ISP. However, for the last week in February the system was only configured to monitor one of the VPI/VCI's so traces prior to March 1 do not include the second ATM channel. This is also the cause for the gap between February 26 and March 1.
Each trace file is named using the following format: yyyymmdd-HHMMSS-[direction].gz. The time and date refers to the local time when the capture was started. The direction refers to which half of the link is contained within the trace. Direction 0 is traffic coming into the University and direction 1 is traffic originating from the University.
All non-IP traffic has been discarded and only TCP, UDP and ICMP traffic is present in the trace. Any user payload within the 64 byte capture record has been zeroed.
The IP addresses in the traces have been replaced using a one-to-one mapping into the 10.0.0.0/8 address space. Each anonymised address was assigned sequentially so the first real-world address observed is mapped to 10.0.0.1, the next new address is 10.0.0.2 and so on. The mapping database was preserved across the entire trace set.
The recommended method for processing these traces is to use Libtrace, which we have developed. There are a number of tools included with libtrace such as a packet dumping utility, a trace format converter (for example, to convert to pcap), a trace splitting/filtering tool and a few statistic generators. We suggest you examine the Libtrace Wiki for more details on the Libtrace tools and the library itself.
Acknowledgements: Some of the information presented on this page has been sourced from the NLANR page about this traceset.
| Name | Local Start Time | Duration | Total Packets | Compressed Size |
|---|---|---|---|---|
| 20010220-210122-0 | Tue Feb 20 21:01:22 2001 | 4:58:38 | 4 million | 91 MB |
| 20010220-210122-1 | Tue Feb 20 21:01:22 2001 | 4:58:38 | 5 million | 101 MB |
| 20010221-020000-0 | Wed Feb 21 02:00:00 2001 | 24:00:00 | 31 million | 645 MB |
| 20010221-020000-1 | Wed Feb 21 02:00:00 2001 | 24:00:00 | 33 million | 689 MB |
| 20010222-020000-0 | Thu Feb 22 02:00:00 2001 | 24:00:00 | 28 million | 602 MB |
| 20010222-020000-1 | Thu Feb 22 02:00:00 2001 | 24:00:00 | 30 million | 618 MB |
| 20010223-020000-0 | Fri Feb 23 02:00:00 2001 | 24:00:00 | 27 million | 577 MB |
| 20010223-020000-1 | Fri Feb 23 02:00:00 2001 | 24:00:00 | 29 million | 597 MB |
| 20010224-020000-0 | Sat Feb 24 02:00:00 2001 | 24:00:00 | 15 million | 308 MB |
| 20010224-020000-1 | Sat Feb 24 02:00:00 2001 | 24:00:00 | 16 million | 323 MB |
| 20010225-020000-0 | Sun Feb 25 02:00:00 2001 | 24:00:00 | 16 million | 343 MB |
| 20010225-020000-1 | Sun Feb 25 02:00:00 2001 | 24:00:00 | 18 million | 377 MB |
| 20010226-020000-0 | Mon Feb 26 02:00:00 2001 | 24:00:00 | 33 million | 702 MB |
| 20010226-020000-1 | Mon Feb 26 02:00:00 2001 | 23:59:51 | 12 million | 259 MB |
| 20010301-110023-0 | Thu Mar 1 11:00:23 2001 | 14:59:37 | 28 million | 597 MB |
| 20010301-110023-1 | Thu Mar 1 11:00:23 2001 | 14:59:37 | 28 million | 585 MB |
| 20010302-020000-0 | Fri Mar 2 02:00:00 2001 | 24:00:00 | 33 million | 688 MB |
| 20010302-020000-1 | Fri Mar 2 02:00:00 2001 | 24:00:00 | 32 million | 649 MB |
| 20010303-020000-0 | Sat Mar 3 02:00:00 2001 | 24:00:00 | 21 million | 414 MB |
| 20010303-020000-1 | Sat Mar 3 02:00:00 2001 | 24:00:00 | 22 million | 440 MB |
| 20010304-020000-0 | Sun Mar 4 02:00:00 2001 | 24:00:00 | 21 million | 422 MB |
| 20010304-020000-1 | Sun Mar 4 02:00:00 2001 | 24:00:00 | 22 million | 450 MB |
| 20010305-020000-0 | Mon Mar 5 02:00:00 2001 | 24:00:00 | 38 million | 817 MB |
| 20010305-020000-1 | Mon Mar 5 02:00:00 2001 | 24:00:00 | 40 million | 822 MB |
| 20010306-020000-0 | Tue Mar 6 02:00:00 2001 | 24:00:00 | 38 million | 824 MB |
| 20010306-020000-1 | Tue Mar 6 02:00:00 2001 | 24:00:00 | 39 million | 819 MB |
| 20010307-020000-0 | Wed Mar 7 02:00:00 2001 | 24:00:00 | 37 million | 802 MB |
| 20010307-020000-1 | Wed Mar 7 02:00:00 2001 | 24:00:00 | 38 million | 787 MB |
| 20010308-020000-0 | Thu Mar 8 02:00:00 2001 | 24:00:00 | 35 million | 765 MB |
| 20010308-020000-1 | Thu Mar 8 02:00:00 2001 | 24:00:00 | 36 million | 763 MB |
| 20010309-020000-0 | Fri Mar 9 02:00:00 2001 | 24:00:00 | 35 million | 765 MB |
| 20010309-020000-1 | Fri Mar 9 02:00:00 2001 | 24:00:00 | 35 million | 744 MB |
| 20010310-020000-0 | Sat Mar 10 02:00:00 2001 | 24:00:00 | 19 million | 401 MB |
| 20010310-020000-1 | Sat Mar 10 02:00:00 2001 | 24:00:00 | 20 million | 408 MB |
| 20010311-020000-0 | Sun Mar 11 02:00:00 2001 | 24:00:00 | 20 million | 411 MB |
| 20010311-020000-1 | Sun Mar 11 02:00:00 2001 | 24:00:00 | 21 million | 434 MB |
| 20010312-020000-0 | Mon Mar 12 02:00:00 2001 | 24:00:00 | 41 million | 881 MB |
| 20010312-020000-1 | Mon Mar 12 02:00:00 2001 | 24:00:00 | 43 million | 889 MB |
| 20010313-020000-0 | Tue Mar 13 02:00:00 2001 | 24:00:00 | 41 million | 902 MB |
| 20010313-020000-1 | Tue Mar 13 02:00:00 2001 | 24:00:00 | 42 million | 886 MB |
| 20010314-020000-0 | Wed Mar 14 02:00:00 2001 | 24:00:00 | 39 million | 849 MB |
| 20010314-020000-1 | Wed Mar 14 02:00:00 2001 | 24:00:00 | 40 million | 839 MB |
| 20010315-020000-0 | Thu Mar 15 02:00:00 2001 | 24:00:00 | 40 million | 870 MB |
| 20010315-020000-1 | Thu Mar 15 02:00:00 2001 | 24:00:00 | 41 million | 860 MB |
| 20010316-020000-0 | Fri Mar 16 02:00:00 2001 | 24:00:00 | 38 million | 817 MB |
| 20010316-020000-1 | Fri Mar 16 02:00:00 2001 | 24:00:00 | 37 million | 776 MB |
| 20010317-020000-0 | Sat Mar 17 02:00:00 2001 | 24:00:00 | 21 million | 444 MB |
| 20010317-020000-1 | Sat Mar 17 02:00:00 2001 | 24:00:00 | 22 million | 454 MB |
| 20010318-020000-0 | Sun Mar 18 02:00:00 2001 | 24:00:00 | 22 million | 467 MB |
| 20010318-020000-1 | Sun Mar 18 02:00:00 2001 | 24:00:00 | 23 million | 470 MB |
| 20010319-010000-0 | Mon Mar 19 01:00:00 2001 | 24:00:00 | 39 million | 854 MB |
| 20010319-010000-1 | Mon Mar 19 01:00:00 2001 | 24:00:00 | 40 million | 839 MB |
| 20010320-010000-0 | Tue Mar 20 01:00:00 2001 | 24:00:00 | 41 million | 887 MB |
| 20010320-010000-1 | Tue Mar 20 01:00:00 2001 | 24:00:00 | 41 million | 858 MB |
| 20010321-010000-0 | Wed Mar 21 01:00:00 2001 | 24:00:00 | 44 million | 935 MB |
| 20010321-010000-1 | Wed Mar 21 01:00:00 2001 | 24:00:00 | 45 million | 922 MB |
| 20010322-010000-0 | Thu Mar 22 01:00:00 2001 | 24:00:00 | 43 million | 922 MB |
| 20010322-010000-1 | Thu Mar 22 01:00:00 2001 | 24:00:00 | 43 million | 885 MB |
| 20010323-010000-0 | Fri Mar 23 01:00:00 2001 | 24:00:00 | 40 million | 867 MB |
| 20010323-010000-1 | Fri Mar 23 01:00:00 2001 | 24:00:00 | 41 million | 851 MB |
| 20010324-010000-0 | Sat Mar 24 01:00:00 2001 | 24:00:00 | 25 million | 507 MB |
| 20010324-010000-1 | Sat Mar 24 01:00:00 2001 | 24:00:00 | 26 million | 517 MB |
| 20010325-010000-0 | Sun Mar 25 01:00:00 2001 | 24:00:00 | 24 million | 486 MB |
| 20010325-010000-1 | Sun Mar 25 01:00:00 2001 | 24:00:00 | 25 million | 508 MB |
| 20010326-010000-0 | Mon Mar 26 01:00:00 2001 | 24:00:00 | 44 million | 944 MB |
| 20010326-010000-1 | Mon Mar 26 01:00:00 2001 | 24:00:00 | 46 million | 964 MB |
| 20010327-010000-0 | Tue Mar 27 01:00:00 2001 | 24:00:00 | 49 million | 1,041 MB |
| 20010327-010000-1 | Tue Mar 27 01:00:00 2001 | 24:00:00 | 52 million | 1,083 MB |
| 20010328-010000-0 | Wed Mar 28 01:00:00 2001 | 24:00:00 | 46 million | 1,000 MB |
| 20010328-010000-1 | Wed Mar 28 01:00:00 2001 | 24:00:00 | 47 million | 985 MB |
| 20010329-010000-0 | Thu Mar 29 01:00:00 2001 | 24:00:00 | 43 million | 921 MB |
| 20010329-010000-1 | Thu Mar 29 01:00:00 2001 | 24:00:00 | 44 million | 918 MB |
| 20010330-010000-0 | Fri Mar 30 01:00:00 2001 | 24:00:00 | 40 million | 859 MB |
| 20010330-010000-1 | Fri Mar 30 01:00:00 2001 | 24:00:00 | 41 million | 853 MB |
| 20010331-010000-0 | Sat Mar 31 01:00:00 2001 | 24:00:00 | 24 million | 495 MB |
| 20010331-010000-1 | Sat Mar 31 01:00:00 2001 | 24:00:00 | 25 million | 502 MB |
| 20010401-010000-0 | Sun Apr 1 01:00:00 2001 | 24:00:00 | 26 million | 533 MB |
| 20010401-010000-1 | Sun Apr 1 01:00:00 2001 | 24:00:00 | 27 million | 543 MB |
| 20010402-010000-0 | Mon Apr 2 01:00:00 2001 | 24:00:00 | 43 million | 923 MB |
| 20010402-010000-1 | Mon Apr 2 01:00:00 2001 | 24:00:00 | 43 million | 900 MB |
| 20010403-010000-0 | Tue Apr 3 01:00:00 2001 | 24:00:00 | 43 million | 943 MB |
| 20010403-010000-1 | Tue Apr 3 01:00:00 2001 | 24:00:00 | 44 million | 919 MB |
| 20010404-010000-0 | Wed Apr 4 01:00:00 2001 | 24:00:00 | 42 million | 904 MB |
| 20010404-010000-1 | Wed Apr 4 01:00:00 2001 | 24:00:00 | 42 million | 876 MB |
| 20010405-010000-0 | Thu Apr 5 01:00:00 2001 | 24:00:00 | 41 million | 892 MB |
| 20010405-010000-1 | Thu Apr 5 01:00:00 2001 | 24:00:00 | 42 million | 863 MB |
| 20010406-010000-0 | Fri Apr 6 01:00:00 2001 | 24:00:00 | 40 million | 820 MB |
| 20010406-010000-1 | Fri Apr 6 01:00:00 2001 | 24:00:00 | 39 million | 769 MB |
| 20010407-010000-0 | Sat Apr 7 01:00:00 2001 | 24:00:00 | 23 million | 440 MB |
| 20010407-010000-1 | Sat Apr 7 01:00:00 2001 | 24:00:00 | 23 million | 427 MB |
| 20010408-010000-0 | Sun Apr 8 01:00:00 2001 | 24:00:00 | 27 million | 501 MB |
| 20010408-010000-1 | Sun Apr 8 01:00:00 2001 | 24:00:00 | 26 million | 476 MB |
| 20010409-010000-0 | Mon Apr 9 01:00:00 2001 | 21:31:40 | 38 million | 784 MB |
| 20010409-010000-1 | Mon Apr 9 01:00:00 2001 | 21:31:45 | 37 million | 740 MB |