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The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use.
23 lis 2022 · NTP Timescale and Data Formats. NTP clients and servers synchronize to the Coordinated Universal Time (UTC) timescale used by national laboratories and disseminated by radio, satellite and telephone modem. This is a global timescale independent of geographic position.
NTP – Protokół komunikacyjny umożliwiający precyzyjną synchronizację czasu pomiędzy komputerami. Wzorcowy czas UTC może pochodzić bezpośrednio z zegarów atomowych lub pośrednio ze specjalizowanych serwerów czasu (ang. Time Server NTP).
Reference Clock Identifier: This is a 32-bit code identifying the particular reference clock. In the case of stratum 0 (unspecified) or stratum 1 (primary reference), this is a four-octet, left-justified,
Root Dispersion (rootdisp): Total dispersion to the reference clock, in NTP short format. Reference ID (refid): 32-bit code identifying the particular server or reference clock. The interpretation depends on the value in the stratum field.
NTP is designed to produce three products: clock offset, roundtrip delay and dispersion, all of which are relative to a selected reference clock. Clock offset represents the amount to adjust the local clock to bring it into correspondence with the reference clock.
4 lip 2023 · The NTP software supports different kinds of reference clocks. This section presents various reference clocks. According to a survey, the most popular real reference clocks are: GPS; DCF77; WWVB; While not the cheapest solution, GPS offers high accuracy without a lot of trickery. DCF77 on the other hand offers very cheap solutions at moderate ...
