公开(公告)号：US11201820B2

公开(公告)日：2021-12-14

申请号：US16940323

申请日：2020-07-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haoyu Song ,  Zhenbin Li ,  Tianran Zhou ,  James N. Guichard ,  Stewart Frederick Bryant ,  Andrew G. Malis

IPC: H04L12/723 ,  H04L29/06

Abstract: Described herein are methods and devices (e.g., routers) for performing segment routing over a multiprotocol label switching (MPLS) network. A method can include a router of the MPLS network receiving a packet, and the router modifying the packet by adding a segment routing header (SRH) type MPLS extension header. The SRH type MPLS extension header includes one or more segment identifiers (SIDs) that collectively provide a SID list for use in segment routing. The method further comprises the router copying one of the one or more SIDs in the SRH type MPLS extension header to a top of an MPLS label stack, and the router forwarding the packet as modified to another router of the MPLS network based on the one of the one or more SIDs included in a label stack entry at the top of the MPLS label stack.

公开(公告)号：US12003413B2

公开(公告)日：2024-06-04

申请号：US18332438

申请日：2023-06-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yali Wang ,  Fan Yang ,  Tianran Zhou

IPC: H04L45/28 ,  H04L45/00 ,  H04L45/42

CPC classification number: H04L45/28 ,  H04L45/42 ,  H04L45/566

Abstract: A method for collecting bit error information is provided. According to the method, a head node may encapsulate indication information into an IPv6 extension header of an IPv6 measurement request packet. The indication information indicates at least one intermediate node on a transmission path of the IPv6 measurement request packet to record bit error information into the IPv6 extension header. According to the application, the bit error information of the intermediate node on the transmission path can be collected.

公开(公告)号：US20230379246A1

公开(公告)日：2023-11-23

申请号：US18363262

申请日：2023-08-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuanlong Jiang ,  Fan Yang ,  Tianran Zhou

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

CPC classification number: H04L45/566 ,  H04L45/74 ,  H04L45/28

Abstract: A protection switching method provides a manner of transferring a protection switching message on an SRv6 data plane. In this manner, a first node can switch, after a fault occurs on an end-to-end transmission path of forward service traffic of the first node, a transmission path of the forward service traffic of the first node to another end-to-end transmission path, and send the forward service traffic through the transmission path after switching. In this manner, the first node only needs to store information about the another transmission path, and an intermediate node does not need to maintain a large amount of path state information and path configuration information.

公开(公告)号：US20230318970A1

公开(公告)日：2023-10-05

申请号：US18332287

申请日：2023-06-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fan Yang ,  Yali Wang ,  Tianran Zhou

IPC: H04L45/50 ,  H04L45/00 ,  H04L69/22

CPC classification number: H04L45/50 ,  H04L45/34 ,  H04L69/22

Abstract: A packet processing method includes carrying an associated channel in an IPv6 packet to provide different types of control channels. The associated channel may be transmitted together with user data. Each type of control channel carries at least one type of control and management message, and one type of control and management message may implement one type of control and management function. For example, if a plurality of control and management functions need to be implemented for the IPv6 network, a plurality of different types of control and management messages may all be carried by using the associated channel, without using a plurality of protocols to carry the plurality of types of control and management messages.

公开(公告)号：US20230102193A1

公开(公告)日：2023-03-30

申请号：US18074004

申请日：2022-12-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tianran Zhou ,  Yuezhong Song

IPC: H04L43/10 ,  H04L41/04

Abstract: A network performance measurement method includes a first network device that sends a first active measurement protocol packet to a second network device, where the first active measurement protocol packet includes measurement indication information, where the measurement indication information indicates a measurement device on a forward path to measure network performance. The forward path is a forwarding path of the first active measurement protocol packet, and the first network device and the second network device are two ends of the forward path, and the measurement device on the forward path includes at least one intermediate device on the forward path. The intermediate device measures network performance of the forward path

公开(公告)号：US11463905B2

公开(公告)日：2022-10-04

申请号：US17100656

申请日：2020-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haoyu Song ,  Tianran Zhou ,  Min Liu ,  Zhenbin Li

IPC: H04L29/06 ,  H04W28/02 ,  H04L69/22

Abstract: A mechanism for adaptively performing in-band network telemetry (INT) by a network controller is disclosed. The mechanism includes receiving one or more congestion indicators from a collector. An adjusted sampling rate is generated. The adjusted sampling rate is a specified rate of insertion of instruction headers for INT and is generated based on the congestion indicators. The adjusted sampling rate is transmitted to a head node, which is configured to perform INT via instruction header insertion into user packets.

公开(公告)号：US20220217070A1

公开(公告)日：2022-07-07

申请号：US17701167

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tianran Zhou ,  Shuping Peng ,  Yuezhong Song

IPC: H04L43/50 ,  H04L43/065 ,  H04L43/067 ,  H04L43/10

Abstract: An operation, administration, and maintenance (OAM) method includes a first network device determines OAM configuration information of a target application, where the OAM configuration information includes an OAM measurement manner, and the first network device forwards the OAM configuration information to a second network device.

公开(公告)号：US20210092061A1

公开(公告)日：2021-03-25

申请号：US17113104

申请日：2020-12-07

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Tianran Zhou ,  Haoyu Song ,  Zhenbin Li ,  Yunan Gu

IPC: H04L12/741 ,  H04L12/733 ,  H04L12/717 ,  H04L12/26

Abstract: A data packet detection method, a device, and a system are disclosed. The method includes: receiving first control information sent by a controller; receiving a first data packet sent by a previous-hop network device of a first network device, where the first data packet includes first detection information, and the first detection information includes a first detection node identifier, a first sequence number, and first collection information; determining, based on the first collection information, first collected data corresponding to the first collection information, and updating the first detection node identifier; and sending, to a next-hop network device of the first network device, the first data packet carrying the updated first detection information. This implements information telemetry on a data packet on a transmission path.

公开(公告)号：US20240171510A1

公开(公告)日：2024-05-23

申请号：US18393064

申请日：2023-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fan Yang ,  Tianran Zhou ,  Yun Chen

IPC: H04L45/00 ,  H04L45/302 ,  H04L45/74

CPC classification number: H04L45/566 ,  H04L45/3065 ,  H04L45/74

Abstract: A packet transmission method and device are disclosed. A first pseudo wire (PW) is established between a first node and a second node. The first node obtains a first service packet, and performs SRv6 encapsulation on the first service packet to obtain a second service packet. The second service packet includes the first service packet and information about the first PW. The first node sends the second service packet to the second node through the first PW. After receiving the second service packet, the second node performs SRv6 decapsulation on the second service packet to obtain the first service packet. An ingress PE device can perform SRv6 encapsulation on a PW service, and encapsulate PW description information and a to-be-transmitted service packet into an actually sent service packet, and an egress PE device performs SRv6 decapsulation on the service packet received through the PW to obtain the to-be-transmitted service packet.

公开(公告)号：US11943099B2

公开(公告)日：2024-03-26

申请号：US18153883

申请日：2023-01-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Haibo Wang ,  Tianran Zhou ,  Weidong Li ,  Jie Dong

IPC: H04L41/0803

CPC classification number: H04L41/0803

Abstract: A method according to embodiments of this application includes: A first network device sends a first packet to a second network device, where the first packet includes first indication information, and the first indication information indicates a support status of an iFIT capability corresponding to the first network device or a first service module included in the first network device. The first network device sends the packet to the second network device, to notify the support status of the IFIT capability of the first network device. In this way, the second network device can determine, based on the iFIT capability of the first network device, whether to encapsulate a measurement header, to avoid that a service packet cannot be correctly processed because the first network device cannot strip the measurement header from the service packet.