公开(公告)号：US11716262B2

公开(公告)日：2023-08-01

申请号：US17825759

申请日：2022-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Peng Zhou ,  Zhenbin Li ,  Hui Ni ,  Nan Wu

IPC: H04L43/02 ,  H04L43/026 ,  H04L43/062 ,  H04L45/00

CPC classification number: H04L43/02 ,  H04L43/026 ,  H04L43/062 ,  H04L45/70

Abstract: A control method for collecting traffic statistics includes a control node obtains a statistics collection instruction, where the statistics collection instruction is used to instruct to collect traffic statistics of a target data flow, generates a traffic statistics collection policy according to the statistics collection instruction, where the traffic statistics collection policy includes a matching identifier of the target data flow, a first command, and a second command, and sends the traffic statistics collection policy to a forwarding node. The first command is used to instruct the forwarding node to set a traffic identifier for the target data flow based on the matching identifier, the second command is used to instruct the forwarding node to add traffic generated by a target packet to a traffic statistics collection result corresponding to the traffic identifier which is used to describe the traffic of the target data flow.

公开(公告)号：US11516130B2

公开(公告)日：2022-11-29

申请号：US17079415

申请日：2020-10-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/74 ,  H04L45/302 ,  H04L45/64

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US11381480B2

公开(公告)日：2022-07-05

申请号：US16148429

申请日：2018-10-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Peng Zhou ,  Zhenbin Li ,  Hui Ni ,  Nan Wu

IPC: H04L43/02 ,  H04L43/026 ,  H04L43/062 ,  H04L45/00

Abstract: A control method for collecting traffic statistics includes a control node obtains a statistics collection instruction, where the statistics collection instruction is used to instruct to collect traffic statistics of a target data flow, generates a traffic statistics collection policy according to the statistics collection instruction, where the traffic statistics collection policy includes a matching identifier of the target data flow, a first command, and a second command, and sends the traffic statistics collection policy to a forwarding node. The first command is used to instruct the forwarding node to set a traffic identifier for the target data flow based on the matching identifier, the second command is used to instruct the forwarding node to add traffic generated by a target packet to a traffic statistics collection result corresponding to the traffic identifier which is used to describe the traffic of the target data flow.

公开(公告)号：US11349759B2

公开(公告)日：2022-05-31

申请号：US16887299

申请日：2020-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Chang Wang ,  Nan Wu ,  Zhenbin Li ,  Hui Ni

IPC: H04L45/00 ,  H04L45/745 ,  H04L45/748

Abstract: A routing control methodincludes: the network device obtains a route suppression request; determines the second routing entry; and sets a state of the second routing entry to a non-delivery state that is used to indicate that the second routing entry does not need to be delivered to a forwarding table. Wherein the network device has a first routing entry and a second routing entry, an address prefix of the first routing entry is a first address prefix, an address prefix of the second routing entry is a second address prefix, a network segment to which the second address prefix belongs is a subset of a network segment to which the first address prefix belongs, and a mask in the second address prefix is greater than a mask in the first address prefix.

公开(公告)号：US11336577B2

公开(公告)日：2022-05-17

申请号：US16937563

申请日：2020-07-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Shuanglong Chen ,  Zhenbin Li ,  Guoyi Chen ,  Jia Che ,  Nan Wu

IPC: H04L12/803 ,  H04L47/125 ,  H04L45/00 ,  H04L45/7453 ,  H04L47/70 ,  H04L45/50

Abstract: The present disclosure discloses a method and an apparatus for implementing load sharing. The method includes: for a congested first link on a first forwarding node, selecting, by a network device, a packet flow forwarded by using the first link; selecting a second link that may be used to forward the packet flow and that is not congested after available bandwidth of the second link is occupied by the packet flow, where the second link is a link between the first forwarding node and a second forwarding node; selecting a first hash gene corresponding to the second link; determining that a third link is not in a congested state after available bandwidth of the third link is occupied by the packet flow; and saving the first hash gene in a source node of the packet flow, where the third link is a link that is on the second forwarding node.

公开(公告)号：US11323366B2

公开(公告)日：2022-05-03

申请号：US16221568

申请日：2018-12-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nan Wu ,  Shunwan Zhuang ,  Hui Ni ,  Zhenbin Li ,  Xia Chen

IPC: H04L45/741 ,  H04L45/50 ,  H04J14/02 ,  H04L45/00 ,  H04L41/12 ,  H04L45/02 ,  H04L45/42

Abstract: Embodiments of the present invention disclose a path determining method, apparatus, and system. In a hybrid network including one controller for implementing a control function, the controller may separately obtain network topology information of a first network and a second network of different network types by using a same control channel protocol. When the controller obtains a path determining requirement for the data transmission path, because the controller has the network topology information of the first network and the second network, during computation of the data transmission path, the controller can determine a path computation result including transmission path parts of the first network and the second network, without performing additional information exchange with another device, and send the path computation result to the first network device. In this way, planning efficiency of the data transmission path is improved.

公开(公告)号：US11063874B2

公开(公告)日：2021-07-13

申请号：US16519917

申请日：2019-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Nan Wu ,  Shunwan Zhuang ,  Jing Liu ,  Yuan Rao ,  Haibo Wang

IPC: H04L12/741 ,  H04L12/801 ,  H04L12/701 ,  H04L12/851 ,  H04L29/06

Abstract: A method, includes receiving a packet flow optimization policy including a flow identifier of a target packet flow, a device identifier of a to-be-adjusted forwarding device, and information about the next hop; obtaining status information of an access control list (ACL) of the to-be-adjusted forwarding device based on the device identifier, where the status information includes resource usage status information of the ACL and capability information that indicates whether the to-be-adjusted forwarding device supports packet flow forwarding that is based on the ACL; and when determining, based on the status information, that the ACL includes an idle resource and the to-be-adjusted forwarding device supports packet flow forwarding that is based on the ACL, sending an ACL record to the to-be-adjusted forwarding device, where the ACL record includes the flow identifier and the information about the next hop.

公开(公告)号：US10999194B2

公开(公告)日：2021-05-04

申请号：US16279401

申请日：2019-02-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changjiang Yan ,  Shunwan Zhuang ,  Nan Wu ,  Guoyi Chen ,  Zhenbin Li ,  Baohua Song

IPC: H04L12/741 ,  H04L12/715 ,  H04L12/803 ,  H04L12/851

Abstract: An information synchronization method includes sending, by a controller, a first message to a network device, where the first message carries control routing protocol (CRP) routing entry information, and is used to advertise a CRP route, and the first message includes first identification information, and after receiving the first message, storing, by a forwarding device, the CRP routing entry information into a CRP routing table of the network device as indicated by the first identification information. Hence, because a route advertised by the controller and a route advertised using a routing protocol between forwarding devices are stored in different routing tables, a related application of the route advertised using the routing protocol between the forwarding devices is not affected.

公开(公告)号：US10757008B2

公开(公告)日：2020-08-25

申请号：US16137817

申请日：2018-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenbin Li ,  Shunwan Zhuang ,  Xia Chen ,  Nan Wu ,  Qiandeng Liang

IPC: H04L12/50 ,  H04L12/715 ,  H04L29/06 ,  H04L12/46 ,  H04L12/741 ,  H04L12/713

Abstract: Embodiments of the present invention provide a Flow Specification-based communications method, device, and system. The method includes: obtaining, by a controller, a requirement indicating that a first resource on a forwarding device needs to be associated with a second resource on the forwarding device; and sending, by the controller, a Border Gateway Protocol Flow Specification BGP Flow Spec protocol packet according to the requirement, where the BGP Flow Spec protocol packet includes a network layer reachability information field and an extended community attribute field, the network layer reachability information field carries characteristic information of the first resource, the extended community attribute field carries a global identifier GID used to indicate the second resource, and the BGP Flow Spec protocol packet is used to instruct to associate the first resource with the second resource.

公开(公告)号：US20200162159A1

公开(公告)日：2020-05-21

申请号：US16619291

申请日：2018-06-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dong Wei ,  Beiyuan Liu ,  Nan Wu ,  Zhengyuan Xu

IPC: H04B10/116 ,  H04B10/50 ,  H04B10/516

Abstract: A computer implemented method, system, and device for direct-current biased optical frequency-division multiplexing (DCO-OFDM) modulation includes generating a DCO-OFDM signal with odd-indexed subcarriers carrying data, suppressing even-indexed subcarriers of the DCO-OFDM signal, and transmitting the DCO-OFDM signal via a light source.