公开(公告)号：US11902156B2

公开(公告)日：2024-02-13

申请号：US17520737

申请日：2021-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cheng Li ,  Zhenbin Li ,  Jun Gong ,  Guoyi Chen ,  Jie Dong

IPC: H04L45/00 ,  H04L45/12 ,  H04L45/42

CPC classification number: H04L45/566 ,  H04L45/123 ,  H04L45/42

Abstract: This application discloses a method that includes obtaining by a network device an original segment list corresponding to a packet forwarding path, where the original segment list includes original segment identifiers that are sequentially arranged, and each of the original segment identifiers that are sequentially arranged corresponds to one node or link on the packet forwarding path. The method further includes comparing by the network device a plurality of successively adjacent original segment identifiers in the original segment list, to generate a plurality of successively adjacent compressed segment identifiers, where a length of each compressed segment identifier is less than a length of a corresponding original segment identifier, and generating by the network device a compressed segment list, where the compressed segment list includes a plurality of compressed segment identifiers, and the compressed segment list is used to forward a packet along the packet forwarding path.

公开(公告)号：US11895007B2

公开(公告)日：2024-02-06

申请号：US17388137

申请日：2021-07-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zongpeng Du ,  Jie Dong

IPC: H04L12/721 ,  H04L45/12 ,  H04L45/02

CPC classification number: H04L45/12 ,  H04L45/02

Abstract: A forwarding path determining method includes: determining, by a path computation node, a first SR-BE forwarding path from a first node to a second node in a first virtual network; determining a second SR-BE forwarding path from the first node to the second node in a physical network; and when the first SR-BE forwarding path completely overlaps the second SR-BE forwarding path, determining the first SR-BE forwarding path as a target forwarding path from the first node to the second node in the first virtual network; or when the first SR-BE forwarding path does not completely overlap the second SR-BE forwarding path, determining, by the path computation node, a first SR-TE forwarding path according to the physical network and the first virtual network, and determining the first SR-TE forwarding path as a target forwarding path from the first node to the second node in the first virtual network.

公开(公告)号：US20230388223A1

公开(公告)日：2023-11-30

申请号：US18446735

申请日：2023-08-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhibo Hu ,  Jie Dong

IPC: H04L45/00 ,  H04L45/745 ,  H04L45/50 ,  H04L45/741

CPC classification number: H04L45/34 ,  H04L45/745 ,  H04L45/50 ,  H04L45/741

Abstract: This application provides a packet forwarding method, apparatus, and system, and belongs to the field of communication technologies. In a scheme provided in this application, a packet includes both a destination address and a behavior instruction, and at least two nodes in a packet forwarding system may identify the behavior instruction in the packet, and may forward the packet based on a first forwarding behavior indicated by the behavior instruction. Therefore, when a plurality of nodes in the packet forwarding system each need to perform a forwarding behavior on the packet, an SID does not need to be allocated to each node, but only the behavior instruction needs to be carried in the packet.

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：US20220060414A1

公开(公告)日：2022-02-24

申请号：US17520737

申请日：2021-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cheng Li ,  Zhenbin Li ,  Jun Gong ,  Guoyi Chen ,  Jie Dong

IPC: H04L12/721 ,  H04L12/717

Abstract: This application discloses a method that includes obtaining by a network device an original segment list corresponding to a packet forwarding path, where the original segment list includes original segment identifiers that are sequentially arranged, and each of the original segment identifiers that are sequentially arranged corresponds to one node or link on the packet forwarding path. The method further includes comparing by the network device a plurality of successively adjacent original segment identifiers in the original segment list, to generate a plurality of successively adjacent compressed segment identifiers, where a length of each compressed segment identifier is less than a length of a corresponding original segment identifier, and generating by the network device a compressed segment list, where the compressed segment list includes a plurality of compressed segment identifiers, and the compressed segment list is used to forward a packet along the packet forwarding path.

公开(公告)号：US11212222B2

公开(公告)日：2021-12-28

申请号：US17132755

申请日：2020-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zongpeng Du ,  Guoyi Chen ,  Jie Dong ,  Xinyuan Wang ,  Jun Gong

IPC: H04L12/741 ,  H04L12/721 ,  H04L29/02 ,  H04L12/52 ,  H04J3/16 ,  H04L12/46 ,  H04Q3/68 ,  G06K7/01 ,  H04L12/417 ,  H04L12/715

Abstract: A data sending method includes receiving, by a forwarding device using a first flexible Ethernet (FlexE) group and in multiple timeslots included in a first timeslot set, multiple first encoded data blocks from a physical coding sublayer (PCS), determining, by the forwarding device according to the timeslots included in the first timeslot set and the first FlexE group, a second FlexE group and multiple timeslots included in a second timeslot set, and sending, by the forwarding device, the first encoded data blocks using the second FlexE group and in the timeslots included in the second timeslot set.

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.

公开(公告)号：US20210314819A1

公开(公告)日：2021-10-07

申请号：US17350485

申请日：2021-06-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Dong ,  Guoyi Chen

IPC: H04W28/16 ,  H04W76/11 ,  H04L12/24 ,  H04L12/751 ,  H04W28/02 ,  H04W40/24 ,  H04W48/18 ,  H04L12/741 ,  H04W16/12 ,  H04L12/911 ,  H04W76/25 ,  H04W16/04 ,  H04W28/26 ,  H04W4/50

Abstract: A forwarding entry generation method includes sending, by a controller, a plurality of resource allocation request messages to a plurality of network devices in a network slice, to trigger the plurality of network devices to allocate resources, where the resource allocation request message includes an identifier of the network slice and a resource that needs to be allocated by a corresponding network device to the network slice; receiving, by the controller, a plurality of resource allocation response messages including the identifier of the network slice and a segment identifier of a corresponding network device, and a resource allocated by each device belongs to the network slice; and generating, by the controller, a forwarding table corresponding to the network slice, where the forwarding table includes a forwarding entry for arriving at a network device in the network slice.

公开(公告)号：US20210167994A1

公开(公告)日：2021-06-03

申请号：US17146607

申请日：2021-01-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zongpeng Du ,  Guoyi Chen ,  Jie Dong

IPC: H04L12/46 ,  H04L12/751 ,  H04L12/715 ,  H04L12/713 ,  H04L12/741

Abstract: A packet transmission method, implemented by a first network device includes determining a first master logical interface, where the first master logical interface is associated with a first virtual network identifier and a first sub-logical interface, and the first sub-logical interface is associated with a second virtual network identifier, and receiving an advertisement packet from a second network device through the first master logical interface, where the advertisement packet includes the first virtual network identifier, first internet protocol (IP) information associated with the first virtual network identifier, the second virtual network identifier, and second IP information associated with the second virtual network identifier.

公开(公告)号：US20210084009A1

公开(公告)日：2021-03-18

申请号：US17105434

申请日：2020-11-25

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zongpeng Du ,  Guoyi Chen ,  Jie Dong

IPC: H04L29/12 ,  H04L12/741

Abstract: This application provides a route generation method, applied to an SRv6 network and including: receiving, by a first network device, a first notification packet from a second network device; where the first notification packet includes a network slice identifier, the first notification packet indicates an association relationship between information of the network slice identifier and an IPv6 address prefix of the second network device, and the network slice identifier is used to identify one network slice; and generating, by the first network device, a route forwarding entry for the IPv6 address prefix of the second network device based on an association relationship between the network slice identifier and the IPv6 address prefix of the second network device. This helps implement a network slice and resource isolation in the SRv6.