An NTP Stratum-One Server Farm Fed By IEEE-1588

Abstract

For the past 16 years, USNO's Network Time Protocol (NTP) stratum-1 servers have been synchronized to its Master Clocks via IRIG-B time code on a low-frequency RF distribution system. The availability of Precise Time Protocol (PTP, IEEE-1588) host-based interfaces will enable the deployment of NTP servers fed by IEEE-1588 over conventional Ethernet networks. This paper describes a PTP GrandMaster/Slave network which maintains synchronization of internal (stratum-0) NTP reference clocks to within tens of nanoseconds. The configuration of a PTP network and the effects of various PTP configuration options are demonstrated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA538755

Entities

People

  • Blair Fonville
  • Richard E. Schmidt

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Clocks
  • Computers
  • Control Systems
  • Crystal Oscillators
  • Data Acquisition
  • Ethernet
  • Frequency
  • Local Area Networks
  • Measurement
  • Measuring Instruments
  • Nanosecond Time
  • Networks
  • Operating Systems
  • Oscillators
  • Phase Measurement
  • Time Intervals

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Positioning, Navigation, and Timing (PNT) Technology.