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Time synchronization method, service single board and network equipment

A business single-board, time synchronization technology, applied in the field of communication, to achieve the effect of accurate CPU time and high accuracy of time synchronization

Active Publication Date: 2020-12-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a time synchronization method, service single board and network equipment to solve the problem of how to realize high-precision time synchronization between the CPU of the main control board and the CPUs of other service single boards

Method used

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  • Time synchronization method, service single board and network equipment
  • Time synchronization method, service single board and network equipment
  • Time synchronization method, service single board and network equipment

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Embodiment Construction

[0048] The technical solutions of the present application are described below in conjunction with the accompanying drawings.

[0049] Before describing the technical solution of the present application, the technical scene of the present application will be described in conjunction with the accompanying drawings.

[0050] A time synchronization network is a network that can realize time synchronization among multiple network devices. The time synchronization network is composed of the clocks of each node and the timing link that transmits the synchronization clock signal, which can accurately transmit the synchronization clock signal from the reference clock to the clocks of each node of the time synchronization network, thereby adjusting the clocks of each node of the time synchronization network to maintain The clock signal is synchronized. my country's time synchronization network adopts a master-slave synchronization method, and the clocks of all network elements in the t...

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Abstract

The embodiment of the invention provides a time synchronization method, a service single board and network equipment. The method comprises the steps that after clock board time synchronization betweenservice single boards, the service single boards obtain CPU time and clock board time of the service single boards according to a preset period and record the CPU time and the clock board time; whenCPU time synchronization between the service single boards is executed, the service single boards obtain current CPU time of the service single boards, and the synchronization time of the CPU is calculated according to the current CPU time and the latest recorded CPU time and clock board time; and the CPU time in the service single board is adjusted to the synchronization time. According to the method, the clock board time between the service single boards needing to realize CPU high-precision time synchronization is synchronized through a high-precision time synchronization protocol, and thenthe CPU time in each service single board is adjusted to the corresponding synchronization time, so that the high-precision time synchronization between the CPUs of the service single boards can be realized.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a time synchronization method, a service board and network equipment. Background technique [0002] The distributed network equipment includes multiple service boards, one of which is used as the main control board to realize the global control of the distributed network equipment, and the other service boards are connected to the main control board, and the business boards connected to each other There is information interaction between boards. In some application scenarios of information interaction, high-precision time synchronization must be achieved between the central processing unit (CPU) of the main control board and the CPUs of other service boards. That is to say, the CPU time of the main control board and the CPU time of other service boards must achieve high-precision time synchronization. For example, in the application scenario of traffic visuali...

Claims

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Application Information

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IPC IPC(8): H04J3/06G06F1/12
CPCH04J3/0638H04J3/0685G06F1/12G06F1/14H04J3/0667
Inventor 刘飞
Owner HUAWEI TECH CO LTD
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