Method and device for monitoring Ethernet clock synchronization

TLDR: In this paper, the authors presented a method and device for monitoring Ethernet clock synchronization, where a slave clock device returns a delay request message to a master clock device, and the delay request messages carries link delay information between the master clock devices and the slave clock devices.

Abstract: The embodiment of the invention provides a method and device for monitoring Ethernet clock synchronization. In the method, a slave clock device returns a delay request message to a master clock device, and the delay request message carries link delay information between the master clock device and the slave clock device of a last time hack cycle, determined by the slave clock device, so that the master clock device is enabled to determine a time deviation between the master clock device and the slave clock device and according to whether the time deviation is smaller than a set time deviation threshold, whether to send alarm information is determined. Because in the method, the slave clock device returns the determined link delay information between the slave clock device and the master clock device to the master clock device from the master clock device so that the master clock device is enabled to determine a time hack condition of the slave clock device so as to achieve an objective of monitoring of the slave clock device and thus precision demands of time synchronization are ensured and loss caused by inaccuracy of time hack is reduced.