Multiplexing the Ethernet Interface Among VAX/VMS Users.

Abstract

This thesis focuses on the multiplexing of Ethernet interface among VAX 11/780 users. Since there is only the one channel that connects VAX 11/780 system to Ethernet Local Area Network, multiplexing of the NI1010 Unibus Ethernet Communication Controller is necessary in order to service multiple VAX users concurrently via Ethernet. This thesis describes a time division multiplexing of NI1010 controller, which can serve up to nine (9) separate VAX users. The developed software enables those users to communicate in any combination with one or more computer systems, which are connected to Ethernet as well. Two Microcomputer Development Systems (MDS) and VAX/VMS system were used for the implementation and testing of the project. The software is designed in such a way that those MDS's act very much like virtual VAX/VMS terminals. The whole system can easily be expanded to serve more than nine users.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1983
Accession Number
ADA145539

Entities

People

  • A. K. Sakellaropoulos
  • I. K. Kidoniefs

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Coaxial Cables
  • Communication Channels
  • Computer Networks
  • Computer Programs
  • Computer Science
  • Computers
  • Data Links
  • Data Transmission
  • Digital Communications
  • Ethernet
  • Identification
  • Local Area Networks
  • Multiple Access
  • Multiplexing
  • Network Science
  • Networks
  • Operating Systems

Fields of Study

  • Computer science

Readers

  • Agent-Based Social Robotics and Mobile-Assisted Learning in Virtual Environments.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Software Verification and Validation.