Method and apparatus for measuring switching time of ethernet ring network

An apparatus for measuring switching time of an Ethernet ring network, comprising a hardware processer configured to execute following modules:

• a time synchronization module and a time recording module on each node, and a comparison module and a calculation module at a management system side of the Ethernet ring network, wherein
• the time synchronization module is configured to synchronize local time of each node in the Ethernet ring network and send a synchronization result to the time recording module on the respective node;
• the time recording module is configured to start timing, on each node, based on the synchronized time, and when a switching occurs in the Ethernet ring network, record a start time of the switching and an end time of the switching of each node, and send a recorded result to the comparison module at the management system side of the Ethernet ring network;
• the comparison module is configured to compare, at the management system side of the Ethernet ring network, the recorded result sent by the time recording module of each node, select a maximum end time of the switching and a minimum start time of the switching among all nodes, and send the two selected time values to the calculation module;
• and
• the calculation module is configured to compare a difference between the maximum end time of the switching and the minimum start time of the switching sent by the comparison module and take the difference as the switching time of the Ethernet ring network.