Open Access
Network Time Protocol Version 4: Protocol and Algorithms Specification
Jack L. Burbank,David L. Mills,William Kasch +2 more
- Vol. 5905, pp 1-110
TLDR
NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (N TPv3), described in RFC 1305, as well as previous versions of the protocol, are described.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. [STANDARDS-TRACK]read more
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References
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Guidelines for Writing an IANA Considerations Section in RFCs Status of this Memo This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.
T. Narten,H. Alvestrand +1 more
TL;DR: In this article, the authors discuss issues that should be considered in formulating a policy for assigning values to a name space and provide guidelines to document authors on the specific text that must be included in documents that place demands on the IANA.
Guidelines for Writing an IANA Considerations Section in RFCs
Thomas Narten,H. Alvestrand +1 more
TL;DR: Many protocols make use of identifiers consisting of constants and other well-known values that must be administered by a central authority to insure that such quantities have consistent values and interpretations in different implementations.
Book
Computer Network Time Synchronization: The Network Time Protocol
TL;DR: This presentation explains in detail the design and implementation of the NTP interleaved modes, and some of the mechanisms used for transferring data between servers and reference clocks.
Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI
TL;DR: SNTP Version 4 involves no changes to the NTP specification or known implementations, but rather a clarification of certain design features of NTP which allow operation in a simple, stateless remote-procedure call (RPC) mode with accuracy and reliability expectations similar to the UDP/TIME protocol described in RFC-868.
Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI
TL;DR: The Simple Network Time Protocol (SNTP) as mentioned in this paper is an adaptation of the NTP used to synchronize computer clocks in the Internet, which can be used when the ultimate performance of the full NTP implementation described in RFC-1305 is not needed or justified.