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1. (WO2017157318) LINK DISCOVERY METHOD AND APPARATUS

Pub. No.:    WO/2017/157318    International Application No.:    PCT/CN2017/076927
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Fri Mar 17 00:59:59 CET 2017
IPC: H04L 12/741
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: WU, Xinggui
吴行贵
WANG, Jiao
王蛟
Title: LINK DISCOVERY METHOD AND APPARATUS
Abstract:
Provided are a link discovery method and apparatus. The method comprises: a control plane device sending a first message to a plurality of forwarding plane devices of a network where the control plane device is located, wherein the first message is used to instruct each forwarding plane device having received the first message to send a topology discovery packet from all available ports thereof; the control plane device receiving second messages respectively sent by the plurality of forwarding plane devices, wherein each of the second messages is generated, according to a first topology discovery packet received on a second port, by a second forwarding plane device sending the second message, and the first topology discovery packet is a topology discovery packet sent, at a first port, by a first forwarding plane device of the plurality of forwarding plane devices; and the control plane device determining, according to the second messages sent by the plurality of forwarding plane devices, a topological connection between the plurality of forwarding plane devices.