METHOD FOR DETERMINING CLOCK TRACE PATH AND METHOD OF CLOCK TRACE IN THE NETWORK

摘要

A method for determining clock trace path and method of clock trace in the network. Said method for determining clock trace path includes: first, in the network, the distributed network units or the centralized servers determine the shortest path arriving respective clock-source network unit in accordance to the preserved network topology information the weighting information of the clock trace link; and among the clock-source provided by the respective arrival clock-source network unit, determining the clock-source network unit wherein the clock-source is the best quality as the optimal clock-source network unit; hereafter, the distributed network units or the centralized servers will regard the determined path arriving the optimal clock-source network unit as the clock trace path. Said method of clock trace then is tracing the clock using the said clock trace path. A method for clock tracing in a network and a method for clocking tracing, the method for clock tracing in a network includes: distributed network element or a centralized server in the network determining a shortest path to each of clock-source network elements according to stored network topology information and clock-tracing link weight information; determining, among clock sources provided by reachable clock-source network elements, one with an optimal quality, where a clock-source network element with that clock source being considered optimal; and taking a shortest path to the optimal clock-source network element as a clock-tracing path. Furthermore, the method for clocking tracing uses such a clock-tracing path for clock tracing.