公开(公告)号：US20240056392A1

公开(公告)日：2024-02-15

申请号：US18495885

申请日：2023-10-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ka ZHANG ,  Sheng FANG

IPC: H04L45/741 ,  H04L45/50 ,  H04L45/42

CPC classification number: H04L45/741 ,  H04L45/50 ,  H04L45/42

Abstract: Embodiments of this application provide a communication method and apparatus, so that packets of different services can be sent, based on an SR technology, on a same path specified by an SR policy. This avoids a problem that a great limitation exists in an implementation of dual-stack reconstruction, and improves communication efficiency. In the method, after receiving a first packet, a first network device forwards the first packet to a second network device based on a path specified by an SR policy. A destination endpoint specified by the SR policy is the second network device. An identifier of the destination endpoint includes a first IP address of the second network device and a second IP address of the second network device.

公开(公告)号：US20230300065A1

公开(公告)日：2023-09-21

申请号：US18320536

申请日：2023-05-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lin DONG ,  Xinjun CHEN ,  Yaqun XIAO ,  Zhenxing WANG ,  Sheng FANG

IPC: H04L45/24 ,  H04L45/28 ,  H04L45/02 ,  H04L12/66

CPC classification number: H04L45/24 ,  H04L45/28 ,  H04L45/04 ,  H04L12/66

Abstract: A method for advertising a processing capability of a network device, a system, and a network device are disclosed, and relate to the field of communication technologies. The method is performed by a network device, and includes: generating a advertisement message including indication information, where the indication information is used to indicate a processing capability of the network device, the processing capability of the network device includes a processing capability of ignoring secondary path information included in a packet when the network device serves as a network device on a primary path for forwarding the packet and receives the packet including primary path information and the secondary path information, and the secondary path information is used to indicate one or more secondary paths for forwarding the packet when the primary path is unavailable.

公开(公告)号：US20230018292A1

公开(公告)日：2023-01-19

申请号：US17930864

申请日：2022-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei BAO ,  Rui GU ,  Juhua XU ,  Xinjun CHEN ,  Yaqun XIAO ,  Sheng FANG ,  Jie ZHANG

IPC: H04L45/302 ,  H04L45/02 ,  H04L47/80 ,  H04L47/76

Abstract: The application discloses a packet transmission method, an apparatus, and a network device. In an embodiment, a first network device obtains identification information corresponding to a service flow, and reserves a forwarding resource based on the identification information. The forwarding resource is used by the first network device to forward the service flow to a second network device. The first network device further sends a packet including the identification information to the second network device, and the second network device reserves a corresponding forwarding resource based on the identification information in the packet. Network devices perform resource reservation hop by hop by sending the packet including the identification information, and do not need to perform resource reservation based on a transmission path that is pre-calculated and planned, so that load of the network device or a controller is reduced, and resource reservation flexibility is improved.

公开(公告)号：US20220103461A1

公开(公告)日：2022-03-31

申请号：US17549202

申请日：2021-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Sheng FANG

IPC: H04L12/761 ,  H04L12/707 ,  H04L12/753 ,  H04L12/723 ,  H04L12/18

Abstract: A multicast data packet processing method performed by an intermediate node of a multicast tree includes: receiving a first Bit Index Explicit Replication (BIER) packet including a first label; obtaining, according to the first label, a second label corresponding to a multicast tree including the intermediate node; and obtaining a second BIER packet according to the second label and the first BIER packet, and sending the second BIER packet which includes the second label.

公开(公告)号：US20230388177A1

公开(公告)日：2023-11-30

申请号：US18226967

申请日：2023-07-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiyong LI ,  Yaqun XIAO ,  Jianwu HAO ,  Sheng FANG ,  Li FAN

IPC: H04L41/0631 ,  H04L43/0823 ,  H04L45/00

CPC classification number: H04L41/0631 ,  H04L43/0823 ,  H04L45/34

Abstract: A fault detection method, a network device, and a system are provided. The method includes: After a first network device receives, through a first forwarding path in an SR policy, a BFD packet that is sent by a second network device and that includes indication information of a SID list, the first network device determines, based on the indication information of the SID list, a second forwarding path that is reversely co-routed with the first forwarding path, and sends a response packet of the BFD packet to the second network device through the second forwarding path, so that the second network device can perform fault detection on the first forwarding path based on the response packet.

公开(公告)号：US20210409311A1

公开(公告)日：2021-12-30

申请号：US17357756

申请日：2021-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin WANG ,  Jianxi DENG ,  Yihong LI ,  Sheng FANG ,  Mingpu WANG ,  Gang WENG

IPC: H04L12/703 ,  H04L12/723 ,  H04L12/823 ,  H04L12/751 ,  H04L12/707

Abstract: A packet loss processing method and a network device are provided. The method includes: A first node obtains a first forwarding label of a first packet, where the first packet is a discarded packet. The first node determines, based on the first forwarding label, that the first node does not have a LSP corresponding to the first forwarding label. The first node sends a first message to a second node, where the first message includes the first forwarding label, and the first message is used to indicate that the first node does not have the LSP corresponding to the first forwarding label. The second node may be, for example, a peer node of the first node. The first node sends the message to the peer node, to indicate that the first node does not have the LSP corresponding to the forwarding label.

公开(公告)号：US20240356839A1

公开(公告)日：2024-10-24

申请号：US18762115

申请日：2024-07-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ka ZHANG ,  Bin WANG ,  Juan ZHENG ,  Li FAN ,  Sheng FANG

IPC: H04L45/00 ,  H04L45/24 ,  H04L45/745

CPC classification number: H04L45/34 ,  H04L45/24 ,  H04L45/745

Abstract: This application discloses a route selection method and a related device. A control entity determines first metric information of a first segment routing (SR) path, generates a first border gateway protocol (BGP) update message including the first metric information, and sends the first BGP update message to an ingress node of the first SR path, where the first metric information represents quality of the first SR path, the first metric information is used for route selection on a plurality of paths, each of the plurality of paths has a same IP prefix of a destination node, and the plurality of paths include the first SR path. According to the method, the control entity can send, to the ingress node of the SR path by using the BGP update message, the metric information that represents the quality of the SR path.