Multi-master time server detection method and device

Abstract

The invention provides a method and a device for detecting a plurality of primary time servers. According to the method, the presence of a plurality of primary time servers in a network is detected. When the plurality of primary time servers are detected in the network, namely, the plurality of primary time servers are all used for synchronizing time of the equipment, so that the phenomenon of asynchronous equipment time in the network caused by the plurality of primary time servers in the network is avoided.

Description

technical field [0001] The present application relates to network communication technology, in particular to a multi-master time server detection method and device. Background technique [0002] Network Time Protocol (NTP: Network Time Protocol) can be used to perform time synchronization between distributed time servers and clients, so as to keep the time of all devices in the network consistent and provide high time synchronization accuracy. [0003] In NTP, the so-called master time server refers to the NTP server that obtains time synchronization from an authoritative clock such as an atomic clock. [0004] When multiple master time servers appear on the network, the time of devices on the network may no longer be synchronized. Because the time of multiple master time servers will inevitably deviate over time, even if the time of these master time servers is the same at the beginning. Multiple master time servers in the network are generally caused by unreasonable plan...

AI Technical Summary

Problems solved by technology

After receiving the NTP message from master time server 1, the system time finally obtained through the clock algorithm (including filtering, merging and selection) must be synchronized with master time server 1; when the NTP message is received from master time server 2 Afterwards, the time obtained by the clock algorithm may not be synchronized with the main time server 1 or the main time server 2, and the time may fluctuate continuously. The reason is that the main time server 1 and the main time server The time of the main time server 2 cannot be kept in sync, which will cause the time of the devices in the network to be out of sync

[0006] By detecting multiple primary time servers in the network, the problem that the time of devices in the network cannot be kept synchronized due to multiple primary time servers can be solved. However, for a large-scale network, it can be found out by manually checking the NTP configuration. Multiple master time servers are time-consuming and labor-intensive

However, currently NTP does not have a method for dynamically detecting multiple master time servers

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