ARPANET Routing Study

Abstract

For several years ARPANET has been subjected to occasional disturbances (referred to as network glitches or network disturbances). Frequency of these disturbances increased from once every 2 or 3 days to 3 or 4 a day in April 1977. This increase was traced to a change in the IMP software governing the satellite line between SDAC and NORSAR reducing the number of packets per flight. When the software was changed back to allow 16 packets per flight the number of disturbances decreased dramatically. However network disturbances are not the result of this one isolated bug. Other causes include: faulty IMP hardware, software bugs, circuit difficulties, traffic overloads, etc. The real problem is not any particular irritant but the vulnerability of the ARPANET to congestion caused by such irritants.

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Document Details

Document Type
Technical Report
Publication Date
Sep 05, 1977
Accession Number
ADA047043

Entities

People

  • Eric Rosen
  • Ira Richer
  • John M. Mcquillan

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Artificial Satellites
  • Buffer Storage
  • California
  • Congestion
  • Debugging
  • Errors
  • Frequency
  • Generators
  • Irritants
  • Language
  • Measurement
  • Overload
  • Plastic Explosives
  • Software Development
  • Software Testing
  • United States

Fields of Study

  • Computer science

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Mathematics or Statistics
  • Seismology

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers