NTP

Network Time Protocol is used to synchronize the clocks of computers on a network. How accurately it synchronizes the clocks of client computers depends on a number of factors. However, the following timings can be used as a guide: Public Internet NTP Servers: <10ms. Public Internet Servers over asymmetric connection (ADSL): <100ms. NTP Servers on […]

Local time varies by a time zone offset which is applied according to the longitude of the location. However, NTP does not use local time. NTP utilizes Universal Coordinated Time (UTC), it does not recognize time zones. UTC is a time standard which is not adjusted for time zones or daylight saving time (DST). Universal […]

Many countries make daylight saving time adjustments during the summer months. Typically, local time is advanced by one hour in the spring and set back one hour in the autumn. However, NTP utilizes Universal Coordinated Time (UTC) rather than local time. UTC is not adjusted for local time zones or daylight saving (DST). Universal Coordinated […]

Simple Network Time Protocol (SNTP) is an Internet Protocol (IP) used to synchronize the clocks of networks of computers. SNTP is a subset of the Network Time Protocol (NTP). The latest version is SNTP v4. It can synchronize seamlessly to full-blown NTP servers. Originally developed for small computers and micro-controllers. Requires less memory and processing […]

The Internet has many NTP servers that can be used to synchronize the time of networks and computers. Most provide a service completely free of charge. So why do organizations need to seriously consider buying a dedicated NTP appliance? Dedicated hardware time references installed locally, within an organization, provide a number of advantages over Internet […]

By implementing a few best practice principles, organisations can attain robust and reliable timing for their network infrastructure: Install 3 or more redundant Stratum 1 NTP servers. Configure lower stratum clients with at least 3 higher stratum servers. Peer lower stratum devices to share time. Secure NTP communications with authentication. Employ Stratum 1 servers that […]

NTP can be installed and configured on Linux in a few simple steps: Install the NTP service. Modify the NTP configuration file, ‘/etc/ntp.conf’, with required options. Add reference clock peers to the configuration file. Add drift file location to the configuration file . Add optional statistics directory to the configuration file . Enable and start […]

Network Time Protocol (NTP) is a standard Internet Protocol (IP) for synchronizing the time of computer clocks over a network. The protocol can be used to coordinate the real time clocks of computers and networked devices to within a few milliseconds of UTC. NTP timestamps are transmitted and received using the User Datagram Protocol (UDP) […]

A Stratum 1 Time Server is a network appliance that receives precise time from a hardware reference clock to provide a time resource to client computers. Network Time Protocol (NTP) implements a hierarchical system of time references. The stratum, or hierarchy level, represents the distance of a time server from the source reference clock. At […]

Network Time Protocol (NTP) is a client-server protocol. A client computer periodically requests timing information from a NTP server. The server responds to requests with timing information that the client can then use for synchronization purposes. Most operating systems have built-in tools to allow computers to automatically synchronize their system clock. For most deployments, the […]

With an ever-increasing number of NTP servers becoming available with even more options, choosing the correct one for your organization can become bewildering. However, with a little thought about your requirements, it can become a very straightforward decision. Enclosure Format – Rack-Mountable, Desktop or DIN rail Mounting The first and possibly easiest choice to make […]