公开(公告)号：US20230421450A1

公开(公告)日：2023-12-28

申请号：US18339792

申请日：2023-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Sheng ,  Tao Tian ,  Haiyan Jin ,  Jianwei Guo ,  Kun Li ,  Weiheng Huang

IPC: H04L41/12 ,  H04L12/46

CPC classification number: H04L41/12 ,  H04L12/4633

Abstract: Embodiments of this application disclose a tunnel establishment method. A first communication apparatus may receive first adjacency topology information sent by a second communication apparatus, and establish a first tunnel between the first communication apparatus and the second communication apparatus when the first adjacency topology information matches second adjacency topology information of the first communication apparatus. It can be learned that, in this solution, the first communication apparatus may locally store only the second adjacency topology information of the first communication apparatus. Compared with the conventional technology in which information about two endpoints of a tunnel needs to be configured on the first communication apparatus, configuration for the first communication apparatus is simpler.

公开(公告)号：US20230370374A1

公开(公告)日：2023-11-16

申请号：US18196866

申请日：2023-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Donglei Pang ,  Cheng Sheng ,  Haibo Wang ,  Fanghong Duan ,  Gang Yan ,  Xuesong Geng

IPC: H04L45/741 ,  H04L12/28 ,  H04L12/46 ,  H04L45/02

CPC classification number: H04L45/741 ,  H04L12/2854 ,  H04L12/4633 ,  H04L45/04

Abstract: A multicast communication method is applied to a software-defined wide area network SD-WAN. In the multicast communication method, a bit index explicit replication (Bit Index Explicit Replication, BIER) capability is deployed on a site device in the SD-WAN, a site device through which a multicast packet needs to pass is indicated by a bit index explicit replication IPv6 encapsulation (Bit Index Explicit Replication IPv6 encapsulation, BIERv6) header in the multicast packet, and a multicast distribution tree does not need to be constructed. In addition, the multicast packet is forwarded through an SD-WAN tunnel between site devices, and an intermediate node does not need to sense a multicast service. In this way, a network device has a small quantity of multicast entries and the multicast entries are converged quickly, ensuring normal running of the multicast service.

公开(公告)号：US20230006917A1

公开(公告)日：2023-01-05

申请号：US17942827

申请日：2022-09-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haibo Wang ,  Shunwan Zhuang ,  Cheng Sheng

IPC: H04L45/00

Abstract: A route determining method, apparatus, and a network device are disclosed. The method includes a first forwarding node receives routing information from a second forwarding node, and then sends a packet to a destination node based on the routing information. The routing information includes a node identifier of the destination node and at least one piece of indication information that is in a one-to-one correspondence with at least one third forwarding node, and the second forwarding node belongs to the at least one third forwarding node. The packet includes the at least one piece of indication information, and the at least one piece of indication information indicates to forward the packet along the at least one third forwarding node.

公开(公告)号：US20240235994A1

公开(公告)日：2024-07-11

申请号：US18614229

申请日：2024-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongwei He ,  Cheng Sheng

IPC: H04L45/00 ,  H04L45/02 ,  H04L45/741

CPC classification number: H04L45/566 ,  H04L45/04 ,  H04L45/741

Abstract: This application provides a packet processing method, a network device, and a network system, and pertains to the field of communication technologies. In the method provided in this application, an intermediate node updates a source IP address of a packet based on an IP address that belongs to a local end in an endpoint IP address of a connection, and updates a destination IP address of the packet based on an IP address that belongs to a remote end in the endpoint IP address of the connection. Therefore, in a scenario in which an SR path crosses underlay transport networks in a plurality of different routing domains, a problem that a packet is discarded because a source IP address is always an IP address of a head end and URPF check fails is avoided.

公开(公告)号：US20230370366A1

公开(公告)日：2023-11-16

申请号：US18316114

申请日：2023-05-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiajia Dong ,  Zhibo Hu ,  Cheng Sheng ,  Zhenbin Li ,  Hongwei He ,  Lin Dong

IPC: H04L45/302 ,  H04L45/00

CPC classification number: H04L45/302 ,  H04L45/70

Abstract: A packet transmission method, a transmission control method, an apparatus, and a system are disclosed. A SR path includes a first network node and a second network node. There are a plurality of communication links between the first network node and the second network node. After obtaining a first packet, the first network node determines a first communication link based on a first link quality identifier carried in the first packet, and forwards the first packet to the second network node through the first communication link. The first link quality identifier indicates a first quality requirement on the communication link between the first network node and the second network node. The plurality of communication links between the first network node and the second network node include the first communication link, and link quality of the first communication link meets the first quality requirement.

公开(公告)号：US20230370293A1

公开(公告)日：2023-11-16

申请号：US18316734

申请日：2023-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Donglei Pang ,  Cheng Sheng ,  Haibo Wang ,  Fanghong Duan ,  Gang Yan ,  Shunwan Zhuang

IPC: H04L12/18 ,  H04L45/16 ,  H04L45/74 ,  H04L12/46

CPC classification number: H04L12/18 ,  H04L45/16 ,  H04L45/74 ,  H04L12/4633

Abstract: A multicast communication method is applied to a software-defined wide area network SD-WAN. In the multicast communication method, a bit index explicit replication (Bit Index Explicit Replication, BIER) capability is deployed on site devices in the SD-WAN, a BIER header in a multicast packet indicates a site device that a multicast packet needs to pass through, and no multicast distribution tree need to be constructed. In addition, the multicast packet is forwarded through an SD-WAN tunnel between site devices, and an intermediate node does not need to sense a multicast service, to reduce a quantity of multicast table entries on a network device and accelerate convergence of the multicast table entries, so that normal running of the multicast service is ensured.