PTP clock synchronization precision test method for linux system

Abstract

The invention discloses a PTP clock synchronization precision test method for a linux system, and belongs to the field of network communication and testing. A test scene comprises a master clock device and four slave clock devices in the same PTP domain, the master clock device and the slave clock devices perform network communication through a common switch, and PTP protocol interface communication is adopted. PTP test software is operated on the master clock device and the slave clock devices respectively to perform PTP clock synchronization, the master clock device sends a synchronization message to determine a synchronization relationship between the master clock device and the slave clock devices, then the master clock device sends a timestamp following message, the slave clock devices record a time difference between the master clock device and the slave clock devices, and the slave clock devices record a synchronization error of set time. Whether precision requirements are met or not is determined. The test method is mainly based on a synchronization precision test on software, the slave clock devices do not support hardware synchronization, there is no requirement on hardware, test scene building cost is low, and the test method is easy to implement.

Description

technical field [0001] The invention relates to the technical field of network communication and testing, in particular to a PTP clock synchronization accuracy testing method for a Linux system. Background technique [0002] Compared with NTP and SNTP protocols, PTP has more accurate clock synchronization accuracy and is more cost-effective than GPS equipment. Therefore, the current domestic PTP technology is developing rapidly and has wide application prospects. It is mainly used in FC networks, distributed measurement and control systems, EPON systems, TTCAN network, substation and other fields, but has not been applied to the Linux system. Contents of the invention [0003] In view of this, the present invention provides a PTP clock synchronization accuracy testing method for the linux system, which can test the PTP clock synchronization accuracy under the linux system. [0004] The technical scheme of the present invention is: a kind of PTP clock synchronization preci...

AI Technical Summary

Problems solved by technology

[0002] Compared with NTP and SNTP protocols, PTP has more accurate clock synchronization accuracy and is more cost-effective than GPS equipment. Therefore, the current domestic PTP technology is developing rapidly and has wide application prospects. It is mainly used in FC networks, distributed measurement and control systems, EPON systems, TTCAN network, substation and other fields, but not yet applied to Linux system

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