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IETF RFC 5905
[ACTIVE]

Network Time Protocol Version 4: Protocol and Algorithms Specification

Metadata

Publisher
IETF
Doc Type
Standard
Pages
110
Abstract
The Network Time Protocol (NTP) is widely used to synchronize computer clocks in the Internet. This document describes NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (NTPv3), described in RFC 1305, as well as previous versions of the protocol. NTPv4 includes a modified protocol header to accommodate the Internet Protocol version 6 address family. NTPv4 includes fundamental improvements in the mitigation and discipline algorithms that extend the potential accuracy to the tens of microseconds with modern workstations and fast LANs. It includes a dynamic server discovery scheme, so that in many cases, specific server configuration is not required. It corrects certain errors in the NTPv3 design and implementation and includes an optional extension mechanism.
Publication Date
2010-06-01
Status Note
Proposed Standard
DOI
10.17487/RFC5905
Link
https://doi.org/10.17487/RFC5905
Author(s)
Professor David L. Mills
Jim Martin
Jack Burbank
William Kasch
Keyword(s)
NTP, SNTP, Time & Sync
Latest version of IETF RFC 5905

Document Versions — IETF RFC 5905

  • ▶ IETF RFC 5905 (2010-06-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

Amended by:

Normative Reference(s)

Bibliographic Reference(s)

  • Marzullo and S. Owicki, "Maintaining the time in a distributed system", ACM Operating Systems Review 19, July 1985. EXTERNAL
  • Bureau International des Poids et Mesures, "Comptes Rendus de la 15e CGPM", 1976. EXTERNAL
  • Mills, D.L., "Computer Network Time Synchronization - the Network Time Protocol", CRC Press, 304 pp, 2006. EXTERNAL
  • Mills, D.L., Electrical and Computer Engineering Technical Report 06-6-1, NDSS, June 2006, "Network Time Protocol Version 4 Reference and Implementation Guide", 2006. EXTERNAL
  • ITU-R TF.460.6 [Active]
  • IETF RFC 1305 [Superseded*]
  • IETF RFC 1345 [Active*]
  • RFC4330 — RFC4330 EXTERNAL
  • IETF RFC 5226 [Superseded*]
  • RFC5906 — RFC5906 EXTERNAL
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IETF RFC 5905, Network Time Protocol Version 4: Protocol and Algorithms Specification. Available at https://doi.org/10.17487/RFC5905
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IETF RFC 5905, Network Time Protocol Version 4: Protocol and Algorithms Specification. Available at https://doi.org/10.17487/RFC5905

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IETF RFC 5905, Network Time Protocol Version 4: Protocol and Algorithms Specification. Available at https://doi.org/10.17487/RFC5905
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<span class="citation"><cite>IETF RFC 5905</cite>, Network Time Protocol Version 4: Protocol and Algorithms Specification. Available at <a href="https://doi.org/10.17487/RFC5905" target="_blank" rel="noopener">https://doi.org/10.17487/RFC5905</a></span>

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IETF RFC 5905, Network Time Protocol Version 4: Protocol and Algorithms Specification
doi: 10.17487/RFC5905
url: https://doi.org/10.17487/RFC5905
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<cite id="bib-rfc5905">IETF RFC 5905</cite>, Network Time Protocol Version 4: Protocol and Algorithms Specification
<span class="doi">10.17487/RFC5905</span>
</li>

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