The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Mar. 22, 2024
Huawei Technologies Co., Ltd., Shenzhen, CN;
Jianhong Qin, Dongguan, CN;
Liang Cheng, Beijing, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A loop detection method and apparatus are provided. The method includes: A first node receives a packet from a second node through a first interface. A node segment identifier is encapsulated at an outer layer of the packet. The node segment identifier identifies a destination node. The first node determines, based on the node segment identifier, that an outbound interface for forwarding the packet is the first interface. The first node determines that a loop exists in a forwarding path of the packet. Whether the loop exists in the forwarding path of the packet is determined by determining whether an interface through which the first node receives the packet is consistent with an outbound interface through which the first node forwards the packet, to further adjust the forwarding path of the packet when the loop exists in the forwarding path of the packet, for example, forward the packet along a backup path or discard the packet, to avoid problems such as port congestion and service packet loss.