Method, device and system for measuring performance of Ethernet

The invention provides a method for measuring performance of an Ethernet. The method comprises the following steps: sending a performance measurement request message to a second MEP by a first MEP, wherein the message comprises a first performance measurement parameter; receiving a first performance measurement response message sent by the second MEP, wherein the first performance measurement response message carries a third performance measurement parameter and a fourth performance measurement parameter; receiving a second performance measurement response message sent by a first MIP, wherein the second performance measurement response message carries a first performance measurement parameter, a second performance measurement parameter and a fifth performance measurement parameter; after receiving the first performance measurement response message and the second performance measurement response message, recording a sixth performance measurement parameter; calculating performance parameters between the first MEP and the second MEP and the performance parameters between the first MEP and the MIP according to the performance measurement parameters. By virtue of the method, device and system provided by the embodiment, measurement on packet loss, time delay and jitter performance of each node on a service path can be finished at a time and multiple times of measurement for subregions are not needed.