METHOD AND APPARATUS FOR PTP SYNCHRONOUS NETWORK

Embodiments of the present invention relate to the field of communications, and provide a method for a Precision Time Protocol PTP synchronization network and an apparatus, which help to reduce costs of obtaining performance of a Precision Time Protocol synchronization network. The method thereof includes: executing, by a slave clock apparatus, an operation of time synchronization with a first apparatus according to the PTP through a first port; setting a state of a second port of the slave clock apparatus to slave; obtaining, by the slave clock apparatus according to the PTP through the second port, information required for determining a time offset between the slave clock apparatus and a second apparatus; determining, by the slave clock apparatus, an offset according to the information, where the offset is equal to M multiplied by the time offset between the slave clock apparatus and the second apparatus, and M is not equal to 0; if an absolute value of the offset is greater than a threshold, determining, by the slave clock apparatus, that time synchronization performance of a first link is faulty or time synchronization performance of a second link is faulty; and sending, by the slave clock apparatus, a message to a third apparatus. The embodiments of the present invention are used for a Precision Time Protocol PTP synchronization network.