公开(公告)号：US11265241B2

公开(公告)日：2022-03-01

申请号：US16718650

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qing Miao ,  Yongkang Zhang ,  Ranxiao Zhao ,  Ting Hua ,  Yanfeng Zhang

IPC: H04L12/723 ,  H04L12/26 ,  H04L12/751 ,  H04L12/733 ,  H04L12/721 ,  H04L45/50 ,  H04L43/10 ,  H04L45/02 ,  H04L45/00

Abstract: A path detection method and apparatus for forwarding at least two layers of labels includes generating, by a first network device, a first request packet used for path detection, where the first request packet includes a label stack and a time to live (TTL), and an initial quantity of layers of the label stack matches an initial value of the TTL, and sending the first request packet, where the first request packet instructs a second network device to send a first response packet to the first network device when the TTL is 0 after being reduced by 1, and the first response packet reaches the first network device through an internet protocol route.

公开(公告)号：US20220337514A1

公开(公告)日：2022-10-20

申请号：US17810376

申请日：2022-07-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Lu ,  Naiwen Wei ,  Qing Miao

IPC: H04L45/28 ,  H04L45/00 ,  H04L45/74

Abstract: This application provides a service chain fault protection method, an apparatus, a device, a service chain fault protection system, and a storage medium, and relates to the field of communications technologies. In this application, in an SRV6 static service chain scenario, when a link between an SF network element and an SFF accessed by the SF network element is faulty, a secondary SID is introduced to update a destination address field of a packet header of a packet to the secondary SID, so that the packet is bypassed, based on the secondary SID, to another SFF accessed by the SF network element, thereby implementing fault protection in the link between the SFF and the SF network element.