Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document.
Note: Even the most advanced machine translation cannot match the quality of professional translators.
Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
(Optional) Configuring UTC Time Correction
Context
The UTC is Greenwich Mean Time (GMT) that is displayed on a 1588v2 device. There is a fixed offset between the UTC and TAI. The International Earth Rotation Service (IERS) periodically advertises the offset.
When 1588v2 devices trace an external clock source, they use the offset provided by the external clock source by default. After signals of the external clock source are lost, they continue to use this offset. If the offset changes, time signals of the entire 1588v2 network may be inaccurate.
To manually set the offset between the UTC time and TAI time, you only need to run the ptp utc-offset command on the grandmaster clock. Other 1588v2 devices only need to synchronize the time with the grandmaster clock.
Previous
