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1. (WO2018196556) TRANSMISSION DELAY PROBING METHOD, DEVICE AND SYSTEM

Pub. No.:    WO/2018/196556    International Application No.:    PCT/CN2018/081385
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Mar 31 01:59:59 CEST 2018
IPC: H04L 12/26
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: XU, Xiaoyang
徐晓旸
SONG, Wei
宋伟
Title: TRANSMISSION DELAY PROBING METHOD, DEVICE AND SYSTEM
Abstract:
Disclosed are a transmission delay probing method, device and system, capable of obtaining a high-precision transmission delay between network devices. The transmission delay probing method comprises: sending, by a network card, to a first network device a first probing message to be sent to a second network device, wherein the first network device has a message forwarding function and mirroring function; obtaining a first timestamp when the network card receives a mirror message of the first probing message from the first network device, and a second timestamp when the network card receives, from the first network device, the first probing message returned from the second network device; and obtaining a round-trip delay between the first network device and the second network device on the basis of the first timestamp and the second timestamp.