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1. (WO2018121406) SDN-BASED PACKET MIRRORING METHOD, AND NETWORK TRAFFIC MONITORING AND MANAGEMENT SYSTEM

Pub. No.:    WO/2018/121406    International Application No.:    PCT/CN2017/117776
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Dec 22 00:59:59 CET 2017
IPC: H04L 12/26
H04L 29/08
Applicants: CHINA UNIONPAY CO., LTD.
中国银联股份有限公司
Inventors: YUAN, Hang
袁航
ZHOU, Yongkai
周雍恺
ZU, Lijun
祖立军
CHEN, Huajun
陈华俊
YAN, Junling
严峻岭
LIU, Guobao
刘国宝
HE, Shuo
何朔
Title: SDN-BASED PACKET MIRRORING METHOD, AND NETWORK TRAFFIC MONITORING AND MANAGEMENT SYSTEM
Abstract:
The present invention relates to an SDN-based packet mirroring method. An SDN controller is separately coupled to an upper-layer application and at least one data switch. The method comprises the following steps: a) the upper-layer application sends a mirroring instruction to the SDN controller by means of a first northbound interface of the SDN controller; b) the SDN controller generates a second flow table on the basis of the mirroring instruction and a first flow table sent from a first data switch, the first data switch initiating transmission of a packet, the first flow table encapsulating the packet, and the second flow table comprising at least an action command corresponding to the mirroring instruction; and c) the second data switch extracts the packet from the second flow table and mirrors the packet to a specified node on the basis of the action command. The method reduces the load of a monitoring server while implementing fine-grained traffic monitoring.