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Center for Applied Internet Data Analysis
Internet Atlas Gallery

NSFNET growth until 1995

Donna Cox and Robert Patterson
The National Center for Supercomputing Applications (NCSA),
National Science Foundation's Supercomputer Centers Program
University of Illinois at Urbana-Champaign


Visualization ThumbnailAbout the Visualization
Visualization Techniques:
(Technique1): Backbone nodes are elevated above the geographical map to imply that all data transfer must first travel up to the backbone, then back down to its final destination elsewhere on the map. Backbone nodes are also represented as red spheres at their geographic position on the map of the USA. Client nodes appear as white spheres placed geographically on the map.
(Technique2): Each line between the backbone nodes and their clients indicates geographical location as well as traffic volume.
Key Visualization Mappings:
(Mapping1): Connections are colored by volume of traffic, according to the color key below the image. Purple lines show the least traffic while white lines show the most.
(Mapping2): Node type is depicted by color. Red spheres represent backbone nodes. White spheres represent clients.
Click Image for Full-Size Visualization Back
  Last Modified: Fri Oct-25-2019 12:31:28 PDT
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