Method, apparatus and system for implementing delay measurement

摘要

The present invention discloses a method and an apparatus for implementing delay measurement, where the method includes: determining, by a measurement apparatus, a delay T0 generated when a first packet is transmitted at a first priority over a first loopback path that includes a first sub-path and a second sub-path; determining a delay T1 generated when a second packet is transmitted over a second loopback path that includes the first sub-path, the second sub-path, a third sub-path, and a fourth sub-path, where the second packet is transmitted at the first priority over the first sub-path and the second sub-path and is transmitted at a second priority over the third sub-path and the fourth sub-path; and determining, according to T0 and T1, a delay between a first network element and a second network element. According to the method, a delay between any two network elements can be measured only by implementing a measurement function in the measurement apparatus, thereby resolving problems in the prior art that because each measured network element needs to have the measurement function, implementation is relatively complex and deployment costs are relatively high.