PACKET LOSS DETECTION METHOD, APPARATUS, AND SYSTEM

摘要

Embodiments of the present invention relate to the field of communications technologies and disclose a packet loss detection method, an apparatus, and a system, so as to simplify a packet loss detection process. The method includes: collecting, by a first network device according to packets sent to a second network device, statistics on a first result corresponding to each group of packets, where one first result includes a quantity of packets in one group of packets and a section identifier of the group of packets, each group of packets includes multiple packets, and the multiple packets are continuously sent by the first network device and belong to a section corresponding to a section identifier of the group of packet; sending, by the first network device, the first result corresponding to each group of packets to a controller according to a preset rule, so that the controller determines whether a packet in the packets sent by the first network device to the second network device is lost. Technical solutions provided in the embodiments of the present invention may be used to detect whether a packet in packets transmitted between network devices is lost.