Statistical information for the CAIDA Anonymized Internet Traces

The CAIDA Anonymized Internet Traces Dataset

CAIDA routinely collects traces on several backbone OC192 links: equinix-chicago (since April 2008) and equinix-sanjose (since July 2008). These monthly traces of one hour each are provided to interested researchers on request in pcap files containing payload-stripped, anonymized traffic organized in the annual datasets listed below.

Mainly driven by cost and size issues for disk storage, a decision was made in summer 2010 to reorganize the passive trace datasets on a quarterly schedule: each quarter the best of the three monthly traces is selected; each year only the four selected traces for each quarter are included in the online datasets. For the omitted traces only metadata are retained. These primarily include statistical information, and a breakdown in flow and protocol characteristics.

Acceptable Use Agreement

Please read the terms of the CAIDA Acceptable Use Agreement (AUA) for Publicy Accessible Datasets below:

When referencing this data (as required by the AUA), please use:

The CAIDA UCSD Statistical information for the CAIDA Anonymized Internet Traces,
https://www.caida.org/data/passive/passive_trace_statistics
Also, please, report your publication to CAIDA.

Statistics for monthly traces

This table provides a summary of statistics for all traces. The columns shows are from left to right:
  • Monitor
  • Year and month (including a link to a graphical display of breakup by protocol, application and country)
  • Start time of trace (UTC)
  • Stop time of trace (UTC)
  • Number of IPv4 packets
  • Number of IPv6 packets
  • Unknown packets (as fraction of total number of packets)
  • Transmission rate in packets per second
  • Transmission rate in bits per second
  • Link load (as fraction of nominal maximum load for an OC192 link (9.953×109 bits/s)
  • Average packet size (bytes) (including a link to a graph of the packet size distribution)

Anonymized Internet Traces Datasets

Restricted Datasets (available through CAIDA)

Publicly Available Datasets

The Data Collection Monitors

Related Objects

See https://catalog.caida.org/details/dataset/passive_metadata to explore related objects to this document in the CAIDA Resource Catalog.
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