Precision Time Protocol (PTP) networks typically implement timing redundancy by incorporating multiple clocks from which the grandmaster timing source is selected. The selection is done by the Best Master Clock Algorithm (BMCA) as a function of the clock quality and some configurable priority settings. In common configurations if the current grandmaster fails or its quality degrades, then an alternate will be selected. If the original clock is restored, then it will re-assume the grandmaster role. These grandmaster changes can be disruptive to the network, so this innovation is a means to dynamically modify the priority of the clocks to reduce the number of grandmaster changes which occur, without compromising the ability of the network to react to failures or clock quality degradation.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.