WDM网络中PTP协议的一种非对称时延算法

摘要

An asymmetry link delay algorithm with two different wavelengths and three steps measurement for IEEE1588v2 protocol in WDM network was proposed.Combined with the equation of Sellmeier,the equation of time/phase difference between main and slave NE and the equations of TX and RX fiber link delay was deduced.%提出了WDM网络中一种适用于1588v2非对称链路时延的测试方法,该方法是在WDM网络中采用2个不同波长λ1、λ2和3步测试来实现的.首先用λ1波长进行1588v2协议的链路时延测试,然后用λ2进行1588v2协议的链路时延测试,最后用一根非常短的光纤把主网元光模块的TX和RX收发端口自环相连进行1588v2协议测试.结合Sellmeier方程推导出了该算法获得主从网元节点的时间/相位偏差及收发两个方向链路时延公式.