3/30/2023 0 Comments Virtual timeclock server![]() ![]() As per our recommendation, keeping accurate time requires the clock to be disciplined once a second, which correlates to the Clock Update Frequency. For example, the path could change due to changes in network topology, or packets being routed through devices that have different interface speeds.įor battery powered devices, both mobile and portable, you must consider different strategies. If the path the NTP packet takes going to the server takes a different amount of time to return, the accuracy is affected. NTP uses calculations to adjust the time that assume the network path is symmetrical. Symmetrical NTP communication - It is critical that the connection for NTP communication is symmetrical.In some cases, firmware updates might be needed for accurate time. However, if the client computer clock's oscillator is not stable, then more fluctuations in between adjustments can occur and the algorithms Windows uses to condition the clock don't work accurately. It does not step the time changes, but rather slows or speeds up the local clock so that you approach the accurate time quickly and stay accurate between NTP requests. NTP uses multiple samples from potentially multiple NTP servers to condition and discipline your local computers clock. Stable client clock - A stable client clocks assures that the natural drift of the oscillator is containable.If the time reference is not properly maintained, or operated by a potentially malicious party, you could expose your domain to time based attacks. It also must be accessible because disruptions in the connection will interfere with time synchronization. The same goes for time, and if your source clock isn't stable, then the entire chain of synchronized clocks is affected and magnified at each stage. ![]() The analogy goes, if you have two boats on the water, and you are trying to measure the altitude of one compared to the other, your accuracy is best if the source boat is very stable and not moving. This usually means installing a GPS device or pointing to a Stratum 1 source, taking #3 into account.
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