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Internet Atlas Gallery

Layout Showing the Major ISPs

Bill Cheswick, Bell Labs and Hal Burch, CMU
Lucent Technologies Bell Labs Innovations
Carnegie Mellon University (CMU) Computer Science Dept.

Visualization Thumbnail Evaluation
(Strength1): It is possible to see multiple groupings at the same time. (Strength2): Collected data is available for analysis over time.
(Issue1): Graph shows IP path connectivity only, not actual traffic on physical links.
(Issue2): Graph reflects only outgoing packet paths. The incoming path is often different, as ISP interconnect agreements often divert traffic through different connections.
(Issue3): Graph doesn't include networks announced in the core routing tables but not contained in the routing arbiter database. Preliminary analysis suggests that these omissions may account for 20% of IP networks.
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