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：US20230171332A1

公开(公告)日：2023-06-01

申请号：US18152015

申请日：2023-01-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Guoyi Chen

IPC: H04L69/324 ,  H04L43/0829 ,  H04L43/0852 ,  H04L45/74

CPC classification number: H04L69/324 ,  H04L43/0835 ,  H04L43/0858 ,  H04L45/74

Abstract: A packet processing method, a network node, and a system includes obtaining, by a first network node, a first packet that includes a segment list, where the segment list includes a segment identifier of a network node on a path used to forward the first packet, obtaining, by the first network node, a segment identifier of a second network node from the segment list, where the second network node is a next-hop segment node of the first network node on the path, replacing, by the first network node, a destination address of the first packet with the segment identifier of the second network node, and adding a network performance parameter of the first network node to the segment list to generate a second packet, and sending, by the first network node, the second packet to the second network node.

公开(公告)号：US11652737B2

公开(公告)日：2023-05-16

申请号：US17367008

申请日：2021-07-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingjing Zhao ,  Guoyi Chen

IPC: H04L12/46 ,  H04L12/723 ,  H04L12/733 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L45/745 ,  H04L47/125 ,  H04L61/251

CPC classification number: H04L45/20 ,  H04L12/4633 ,  H04L45/02 ,  H04L45/50 ,  H04L45/745 ,  H04L47/125 ,  H04L61/251

Abstract: A route recursion control method includes a first network device that receives Border Gateway Protocol (BGP) routing information from a second network device. The BGP routing information includes a destination address, a next-hop address for the destination address, and attribute information. The attribute information indicates a manner of performing route recursion on the next-hop address by the first network device. The first network device determines, based on the attribute information, the manner of performing the route recursion on the next-hop address.

公开(公告)号：US11637665B2

公开(公告)日：2023-04-25

申请号：US17168198

申请日：2021-02-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04L5/00 ,  H04L45/50 ,  H04L12/413 ,  H04L45/24 ,  H04L47/724

Abstract: A forwarding table generation method is provided. The method includes: determining, by a forwarding device, a first timeslot set, where the first timeslot set includes multiple timeslots during which the forwarding device sends, to a first device by using a first flexible Ethernet group, multiple encoded data blocks generated by a physical coding sublayer; determining, by the forwarding device, a second timeslot set, where the second timeslot set includes multiple timeslots during which the forwarding device receives, by using a second FlexE group, the multiple encoded data blocks sent by a second device; and generating, by the forwarding device, a forwarding table, where the forwarding table includes a mapping relationship between the second FlexE group and the multiple timeslots included in the second timeslot set, and between the first FlexE group and the multiple timeslots included in the first timeslot set.

公开(公告)号：US20230073121A1

公开(公告)日：2023-03-09

申请号：US17903322

申请日：2022-09-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuesong Geng ,  Guoyi Chen

IPC: H04L45/00 ,  H04L45/24

Abstract: A segment routing (SR) policy issuing method applied to an SR network. The SR network includes a path computation node (PCN), a first node, and a second node, a first path and a second path between the first node and the second node. The first node is a source node of the first path and the second path. The second node is a destination node of the first path and the second path. The method includes the PCN generating an SR policy and sending the SR policy to the first node. The SR policy indicates to the first node to generate a first packet flow and a second packet flow based on an original packet flow, send the first packet flow through the first path, and send the second packet flow through the second path.

公开(公告)号：US11570285B2

公开(公告)日：2023-01-31

申请号：US16911715

申请日：2020-06-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Guoyi Chen

IPC: H04L69/324 ,  H04L43/0829 ,  H04L43/0852 ,  H04L45/74 ,  H04L45/64 ,  H04L45/50 ,  H04L45/00 ,  H04L43/08

Abstract: A packet processing method, a network node, and a system includes obtaining, by a first network node, a first packet that includes a segment list, where the segment list includes a segment identifier of a network node on a path used to forward the first packet, obtaining, by the first network node, a segment identifier of a second network node from the segment list, where the second network node is a next-hop segment node of the first network node on the path, replacing, by the first network node, a destination address of the first packet with the segment identifier of the second network node, and adding a network performance parameter of the first network node to the segment list to generate a second packet, and sending, by the first network node, the second packet to the second network node.

公开(公告)号：US11533254B2

公开(公告)日：2022-12-20

申请号：US17240040

申请日：2021-04-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Li ,  Guoyi Chen

IPC: H04L12/717 ,  H04L12/721 ,  H04L12/725 ,  H04L12/749 ,  H04L12/751 ,  H04L45/42 ,  H04L45/02 ,  H04L45/12 ,  H04L45/302 ,  H04L45/741

Abstract: A system and network devices for packet processing, a network device including a processor and instructions for receiving a first packet sent by a second network node, the first packet including a format of a segment identifier of the second network node describing a length and a location of each field in the segment identifier, obtaining the format based on the first packet, the segment identifier having a first field, and including a determined value of the first field in the segment identifier in a second packet sent to the second network node, the value of the first field in the segment identifier being determined based on a segment routing policy and the format, and the determined value of the first field indicating to the second network node to process the second packet.

公开(公告)号：US20220182315A1

公开(公告)日：2022-06-09

申请号：US17680872

申请日：2022-02-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuesong Geng ,  Guoyi Chen ,  Shuping Peng ,  Jie Dong

IPC: H04L45/00 ,  H04L45/12 ,  H04L45/302 ,  H04L12/46

Abstract: A service packet transmission method includes: A control device delivers respective attribute information of at least two transmission paths to a first forwarding device. In this way, after obtaining traffic requirement information, the first forwarding device may determine, based on the traffic requirement information and the respective attribute information of the transmission paths, a first transmission path that meets a traffic requirement. Then, the first transmission path sends a received service packet to a second forwarding device through the first transmission path.

公开(公告)号：US20210336870A1

公开(公告)日：2021-10-28

申请号：US17367008

申请日：2021-07-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingjing Zhao ,  Guoyi Chen

IPC: H04L12/733 ,  H04L12/741 ,  H04L12/751 ,  H04L12/723 ,  H04L12/803 ,  H04L12/46 ,  H04L29/12

Abstract: A route recursion control method includes a first network device that receives Border Gateway Protocol (BGP) routing information from a second network device. The BGP routing information includes a destination address, a next-hop address for the destination address, and attribute information. The attribute information indicates a manner of performing route recursion on the next-hop address by the first network device. The first network device determines, based on the attribute information, the manner of performing the route recursion on the next-hop address.

公开(公告)号：US11071017B2

公开(公告)日：2021-07-20

申请号：US16719052

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Dong ,  Guoyi Chen

IPC: H04L12/24 ,  H04L12/741 ,  H04L12/751 ,  H04L12/911 ,  H04W4/50 ,  H04W16/04 ,  H04W16/12 ,  H04W28/02 ,  H04W28/16 ,  H04W28/26 ,  H04W40/24 ,  H04W48/18 ,  H04W76/11 ,  H04W76/25 ,  H04W84/04 ,  H04W88/12 ,  H04W88/14 ,  H04W88/18 ,  H04W92/02 ,  H04W92/14 ,  H04W92/24

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.