公开(公告)号：US20230231795A1

公开(公告)日：2023-07-20

申请号：US18184899

申请日：2023-03-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Xu ,  Jie Dong ,  Guoyi Chen

IPC: H04L45/02 ,  H04L45/64 ,  H04L45/60

CPC classification number: H04L45/02 ,  H04L45/64 ,  H04L45/60

Abstract: A method for synchronizing topology information in a service function chain (SFC) network, where the SFC network includes at least one classifier (CF) and at least one service function forwarder (SFF). The method includes that a first network element in the at least two routing network elements establishes a Border Gateway Protocol (BGP) connection to at least one second network element other than the first network element in the at least two routing network elements, where the first network element is any one of the at least two routing network elements, and the first network element sends a first BGP update message to the at least one second network element, where the first BGP update message includes topology information of the first network element such that the at least one second network element obtains the topology information of the first network element.

公开(公告)号：US10855574B2

公开(公告)日：2020-12-01

申请号：US16232854

申请日：2018-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Dong ,  Guoyi Chen ,  Zongpeng Du ,  Ling Xu

IPC: H04W4/00 ,  H04L12/727 ,  H04L12/751 ,  H04L12/721 ,  H04L12/707

Abstract: This application discloses a method for computing a forwarding path. The method includes: receiving, by a network device, notification packets separately sent by a plurality of forwarding nodes, where each notification packet includes interface forwarding delay information of the forwarding node that sends the notification packet, device forwarding delay information of the forwarding node, and a transmission delay of a link connected to the forwarding node; obtaining the interface forwarding delay information and the device forwarding delay information of each of the plurality of forwarding nodes, and obtaining a transmission delay of a link between the plurality of forwarding nodes; and computing a forwarding path between a first forwarding node and a second forwarding node, where a forwarding delay of the forwarding path meets a delay requirement of a service.

公开(公告)号：US20240022505A1

公开(公告)日：2024-01-18

申请号：US18475459

申请日：2023-09-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bing Liu ,  Jianwei Mao ,  Xia Chen ,  Ling Xu

IPC: H04L45/302 ,  H04L43/0882 ,  H04L45/74 ,  H04L47/2425 ,  H04L47/125

CPC classification number: H04L45/308 ,  H04L43/0882 ,  H04L45/742 ,  H04L47/2425 ,  H04L47/125

Abstract: A method includes: A first network device receives a first subscription request sent by a first subscription device. The first subscription request includes an identifier of the first subscription device and an identifier of a destination device. The first network device obtains first subscription data based on the identifier of the first subscription device and the identifier of the destination device. The first subscription data includes an identifier of each path in N paths, N is greater than 1, and any path in the N paths is used to implement communication between the first subscription device and the destination device. The first network device sends a first subscription response to the first subscription device. The first subscription response includes the first subscription data.

公开(公告)号：US10791053B2

公开(公告)日：2020-09-29

申请号：US16018946

申请日：2018-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Xu ,  Jie Dong ,  Guoyi Chen

IPC: H04L12/741 ,  H04L12/751 ,  H04L12/725 ,  H04L12/18 ,  H04L12/721

Abstract: An SFC-based communications method and system, and an apparatus are provided. The SFC includes a CF node, an SFF node, and an SF node, and the SFF node is connected to the SF node. The method includes: receiving, by the CF node, a first message from the SFF node; obtaining, by the CF node, network topology information of the SFC based on the first message; obtaining, by the CF node, an SFC forwarding table, where the SFC forwarding table is determined based on the network topology information of the SFC; and sending, by the CF node to the SFF node, a second message used to indicate the SFC forwarding table. In this way, a network topology of the SFC can be flexibly and efficiently discovered.

公开(公告)号：US11627067B2

公开(公告)日：2023-04-11

申请号：US17378088

申请日：2021-07-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Xu ,  Jie Dong ,  Guoyi Chen

IPC: H04L45/02 ,  H04L45/64 ,  H04L45/60

Abstract: A method for synchronizing topology information in a service function chain (SFC) network, where the SFC network includes at least one classifier (CF) and at least one service function forwarder (SFF). The method includes that a first network element in the at least two routing network elements establishes a Border Gateway Protocol (BGP) connection to at least one second network element other than the first network element in the at least two routing network elements, where the first network element is any one of the at least two routing network elements, and the first network element sends a first BGP update message to the at least one second network element, where the first BGP update message includes topology information of the first network element such that the at least one second network element obtains the topology information of the first network element.

公开(公告)号：US20220278925A1

公开(公告)日：2022-09-01

申请号：US17746078

申请日：2022-05-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tianran Zhou ,  Ling Xu ,  Min Liu ,  Zhenbin Li

IPC: H04L45/42 ,  H04L45/24 ,  H04L45/00

Abstract: A method for delivering operations, administration and maintenance (OAM) configuration information includes obtaining, by a control node in a communication network and from at least two of a plurality of first nodes in the communication network, advertisement packets, wherein each of the advertisement packets comprises indication information indicating a corresponding path detection mode supported by a sender of each of the advertisement packets; determining, by the control node based on a path detection mode to be used and the advertisement packets, a detection path; and delivering OAM configuration information to a head node in the detection path and a tail node in the detection path.

公开(公告)号：US20210058315A1

公开(公告)日：2021-02-25

申请号：US17094538

申请日：2020-11-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Dong ,  Guoyi Chen ,  Zongpeng Du ,  Ling Xu

IPC: H04L12/727 ,  H04L12/751 ,  H04L12/721 ,  H04L12/707

Abstract: A method includes receiving, by a network device, notification packets separately sent by a plurality of forwarding nodes, where each notification packet includes interface forwarding delay information of the forwarding node that sends the notification packet, device forwarding delay information of the forwarding node, and a transmission delay of a link connected to the forwarding node; obtaining the interface forwarding delay information and the device forwarding delay information of each of the plurality of forwarding nodes, and obtaining a transmission delay of a link between the plurality of forwarding nodes; and computing a forwarding path between a first forwarding node and a second forwarding node, where a forwarding delay of the forwarding path meets a delay requirement of a service.

公开(公告)号：US20190190813A1

公开(公告)日：2019-06-20

申请号：US16285817

申请日：2019-02-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Xu ,  Jie Dong ,  Guoyi Chen

IPC: H04L12/751 ,  H04L12/773

CPC classification number: H04L45/02 ,  H04L45/60 ,  H04L45/64

Abstract: A method for synchronizing topology information in a service function chain (SFC) network, where the SFC network includes at least one classifier (CF) and at least one service function forwarder (SFF). The method includes that a first network element in the at least two routing network elements establishes a Border Gateway Protocol (BGP) connection to at least one second network element other than the first network element in the at least two routing network elements, where the first network element is any one of the at least two routing network elements, and the first network element sends a first BGP update message to the at least one second network element, where the first BGP update message includes topology information of the first network element such that the at least one second network element obtains the topology information of the first network element.

公开(公告)号：US11431611B2

公开(公告)日：2022-08-30

申请号：US17094538

申请日：2020-11-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Dong ,  Guoyi Chen ,  Zongpeng Du ,  Ling Xu

IPC: H04L1/00 ,  H04L45/121 ,  H04L45/02 ,  H04L45/12 ,  H04L45/24

Abstract: A method includes receiving, by a network device, notification packets separately sent by a plurality of forwarding nodes, where each notification packet includes interface forwarding delay information of the forwarding node that sends the notification packet, device forwarding delay information of the forwarding node, and a transmission delay of a link connected to the forwarding node; obtaining the interface forwarding delay information and the device forwarding delay information of each of the plurality of forwarding nodes, and obtaining a transmission delay of a link between the plurality of forwarding nodes; and computing a forwarding path between a first forwarding node and a second forwarding node, where a forwarding delay of the forwarding path meets a delay requirement of a service.

公开(公告)号：US20210344586A1

公开(公告)日：2021-11-04

申请号：US17378088

申请日：2021-07-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Xu ,  Jie Dong ,  Guoyi Chen

IPC: H04L12/751 ,  H04L12/715 ,  H04L12/773

Abstract: A method for synchronizing topology information in a service function chain (SFC) network, where the SFC network includes at least one classifier (CF) and at least one service function forwarder (SFF). The method includes that a first network element in the at least two routing network elements establishes a Border Gateway Protocol (BGP) connection to at least one second network element other than the first network element in the at least two routing network elements, where the first network element is any one of the at least two routing network elements, and the first network element sends a first BGP update message to the at least one second network element, where the first BGP update message includes topology information of the first network element such that the at least one second network element obtains the topology information of the first network element.