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| | ntp.org: Home of the Network Time Protocol |
 | | NTP is a protocol designed to synchronize the clocks of computers over a network. | | | NTP version 4 is a significant revision of the NTP standard, and is the current development version, but has not been formalized in an RFC. | | | The NTP Public Services Project, which is hosted by Internet Systems Consortium, Inc., provides support and additional development resources for the Official Reference Implementation of NTP. |
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http://www.ntp.org
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| | RFC 1305 (rfc1305) - Network Time Protocol (Version 3) Specification, Impl |
| | The selection algorithm used in NTP uses a variant of the Bellman-Ford distributed routing algorithm [37] to compute the minimum-weight spanning trees rooted on the primary servers. | | | Network Working Group David L. Mills Request for Comments: 1305 University of Delaware Obsoletes RFC-1119, RFC-1059, RFC-958 March 1992 Network Time Protocol (Version 3) Specification, Implementation and Analysis Note: This document consists of an approximate rendering in ASCII of the PostScript document of the same name. | | | The approach taken in the NTP design and its predecessors involves mutually coupled oscillators and maximum-likelihood estimation and clock-selection procedures, together with a design that allows provable assertions on error bounds to be made relative to stated assumptions on the correctness of the primary reference sources. |
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http://www.faqs.org/rfcs/rfc1305.html
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| | NTP |
| | NTP has been initiated in the 1980's by Dave L. Mills who was trying to achieve a high accuracy time synchronization for computers across the network. | | | The NTP package contains a background program (daemon or service) which synchronizes the computer's system time to one or more external reference time sources which can be either other devices on the network, or a radio clock which is connected to the computer. | | | In large networks it is a good practice to install one ore more stratum 1 time servers which make a reference time available to several server computers in each department. |
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http://www.meinberg.de/english/info/ntp.htm
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| | Network Time Protocol Version 3 |
| | When setting up your ntp configuration file, it is important to reference these machines by their clockserver aliases and not their canonical names; this will allow us to transparently move the NTP servers to other machines in the future. | | | The Network Time Protocol (NTP) provides a mechanism to synchronize time on computers across an internet. | | | xntp is a public domain software package which uses NTP for synchronizing computer clocks. |
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http://www.ccd.bnl.gov/xntp
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| | LinuxDevCenter.com -- Synchronizing Networks with NTP |
| | The lesson learned was that most NTP clients have the ability to query multiple stratums, writing the average of difference to the software clock. | | | In this example, each computer can be a client of a server in a higher stratum and a server for computers in a lower stratum. | | | The further a computer is from stratum 1, the less accurate its timing information. |
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http://www.linuxdevcenter.com/pub/a/linux/2003/01/02/ntp.html
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| | (NTP) Network Time Protocol |
| | Simply put, NTP is the protocol used to synchronize the clocks of computers on a network or across multiple networks, like the Internet. | | | Symmetricom's NTP devices include dedicated network time servers and the software necessary to synchronize, manage and monitor time on all the components of a network. | | | As the global marketplace has grown more reliant on the Internet and network computing, the importance of Network Time Protocol, or NTP, has grown as well. |
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http://www.ntp-systems.com/ntp.html
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| | The Network Time Protocol (NTP) Distribution |
| | NTP is by its very nature a complex distributed network application and can be configured and used for a great many widely divergent timekeeping scenarios. | | | NTP support for one or more computers is normally engineered as part of the existing public NTP synchronization subnet. | | | Background information on computer network time synchronization can be found on the Executive Summary - Computer Network Time Synchronization page. |
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http://www.eecis.udel.edu/~ntp/ntp_spool/html
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| | GeodSoft How-To: NTP Time Synchronization: Contents |
| | It's become clear that NTP Is a Complete Solution to the UNIX and Windows computer time synchronization and accuracy problem. | | | The emphasis is on the basics of installing Network Time Protocol servers on UNIX and Windows computers with numerous links to detailed authoritative sources. | | | Installing NTP on Unix gives step by step instructions for installing ntpd, the open source and free Network Time Protocol server, on UNIX, specifically OpenBSD 2.6, 2.7, 2.8 and 2.9 and also Red Hat Linux 6.2 and 7.1. |
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http://geodsoft.com/howto/timesync
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| | Network Time Protocol (NTP) |
| | If you wish to synchronise a network of machines, set up a couple of your machines to refer to AAPT's time servers thereby creating your own stratum three or four network time server and then set up your other machines to refer to your own time servers. | | | There are two kinds of NTP software: complete (NTP) and simple (SNTP). | | | These shared resources often have time-stamps associated with them so it is important that computers communicating over networks, including the Internet, are synchronised. |
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http://info.connect.com.au/docs/ntp
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| | NIST Internet Time Service |
| | Since many computers keep time internally as the number of seconds since January 1, 1970 (or another date), converting the received time to the necessary format is often a simple matter of binary arithmetic. | | | Large computers and workstations often include NTP software with their operating systems. | | | Many of the available NTP software clients for personal computers don’t do any averaging at all. |
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http://tf.nist.gov/service/its.htm
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| | Network Time Protocol |
| | The NTP control queries a network time server and returns the current time and date. | | | Delay - This is the round trip delay time, in seconds, between the local computer and the server. | | | TimeOut - Time out value for the query in milliseconds. |
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http://bigben.stanford.edu/LabSuite/network_time_protocol.htm
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| | USNO NETWORK TIME SERVERS |
| | NTP runs as a client program on a computer. | | | ISPs should configure routers or firewalls to serve as stratum 2 servers to the ISP network. | | | Current NTP traffic in Washington, DC Network Time Protocol (NTP) is an Internet standard protocol which enables client computers to maintain system time synchronization to the US Naval Observatory Master Clocks in Washington, DC and Colorado Springs, CO. |
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http://tycho.usno.navy.mil/ntp.html
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| | clock.org |
| | The icing on the cake is that the entire source code to this operating system is FREE, to study and learn from. | | | Now, if everyone would simply write software that was compliant with its standards... | | | In the mean time, use strong crypto like SSH and PGP to do your communications with so as to frustrate those who want to spy on you. |
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http://www.clock.org
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| | GPS Time Server & Synchronization Solutions using NTP through the GPS system from Spectracom Corporation |
| | Our solutions for time synchronization include distributing timing via Network Time Protocol (NTP time servers), other precise signaling and protocols, and calibration and control of devices with accurate frequency references. | | | If this is a new installation, you'll need to first create a data-entry form and some templates to display that data. | | | If you are new to GPS time servers, time synchronization or frequency control, click on a link in the left pane to learn more about how our solutions, capabilities, and products benefit you. |
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http://www.spectracomcorp.com
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