Optical line termination, passive optical network, and method and apparatus for performance monitoring

摘要

A method of performance monitoring according to an embodiment of the invention includes, in a passive optical network (PON), sending system time of an optical line termination (OLT) to an optical network unit (ONU). The method further includes retrieving, by the OLT, network data collected at the ONU and associated with the sent OLT system time. The retrieved network data is stored at the OLT.