公开(公告)号：US20240022508A1

公开(公告)日：2024-01-18

申请号：US18476354

申请日：2023-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fanghong DUAN ,  Jingrong XIE

IPC: H04L45/00 ,  H04L45/748 ,  H04L45/02

CPC classification number: H04L45/566 ,  H04L45/748 ,  H04L45/02

Abstract: The present disclosure provides a bit index explicit replication over internet protocol version 6 (BIERv6) packet processing method, and the method is applied to an Ethernet virtual private network (EVPN). The method includes: A first network device receives a BIERv6 packet sent by a second network device. The BIERv6 packet includes an internet protocol version 6 (IPv6) header and a broadcast, unknown unicast, and multicast (BUM) packet, a source address (SA) of the IPv6 header is a IPv6 address, the IPv6 address identifies the second network device, the first network device is an egress device in a BIER domain, and the second network device is an ingress device in the BIER domain. The first network device determines, based on the IPv6 address, a EVPN instance to which the BUM packet belongs. The first network device forwards the BUM packet based on the EVPN instance. The foregoing technical solutions can reduce waste of public network link bandwidth, and improve BUM packet replication efficiency.

公开(公告)号：US20220376983A1

公开(公告)日：2022-11-24

申请号：US17882343

申请日：2022-08-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong XIE ,  Pingan YANG ,  Yang XIA

IPC: H04L41/0896 ,  H04L41/0894

Abstract: This application relates to the field of communication technologies, and discloses a method and an apparatus for determining a link for forwarding a service flow, and a storage medium. In embodiments of this application, a first forwarding device may obtain identification information of a first service flow; and determine, based on the identification information of the first service flow, a link bandwidth matrix, and link statuses respectively corresponding to N links, a first link for forwarding the first service flow. It can be learned that in embodiments of this application, a hash operation does not need to be performed based on a device identifier of each forwarding device, and a specific forwarding device that performs forwarding does not need to be determined by comparing a plurality of hash values. Therefore, an amount of calculation is small and efficiency is high.

公开(公告)号：US20210044514A1

公开(公告)日：2021-02-11

申请号：US17080404

申请日：2020-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong XIE ,  Gang YAN ,  Yang XIA ,  Shunwan ZHUANG ,  Guoyi CHEN

IPC: H04L12/761 ,  H04L12/741 ,  H04L12/18 ,  H04L12/911

Abstract: This application provides a multicast data packet processing method and a forwarding device. The method includes: establishing, by a first forwarding device, a segment routing header SRH-based tunnel with a third forwarding device, where the SRH-based tunnel passes through a second forwarding device that does not support bit index explicit replication BIER; generating, by the first forwarding device, a first multicast data packet based on a multicast data packet from a multicast source and the SRH-based tunnel, where the first multicast data packet includes a first packet header, a second packet header, and the multicast data packet from the multicast source, the first packet header includes an SRH header, and a destination address included in the second packet header is an address of the second forwarding device; and sending, by the first forwarding device, the first multicast data packet to the second forwarding device through the SRH-based tunnel.

公开(公告)号：US20220263760A1

公开(公告)日：2022-08-18

申请号：US17735944

申请日：2022-05-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Taixu TIAN ,  Yang XIA ,  Jingrong XIE ,  Bing HAN

IPC: H04L47/125 ,  H04L45/745

Abstract: This application discloses a method, and a device for load balancing in a BIER network. The method includes: a network device obtains a BIER packet, and determines, based on an identifier in the BIER packet, a target next-hop node that reaches a destination address of the first BIER packet from a plurality of next-hop nodes of the network device. Then, the network device generates a target forwarding table based on the target next-hop node, and forwards the first BIER packet based on the target forwarding table. In this application, a control plane does not perform load balancing on a BIER packet in a manner of delivering a large quantity of load balancing tables to a forwarding plane, but the forwarding plane of the network device generates the target forwarding table to perform load balancing on the BIER packet.

公开(公告)号：US20220103461A1

公开(公告)日：2022-03-31

申请号：US17549202

申请日：2021-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Sheng FANG

IPC: H04L12/761 ,  H04L12/707 ,  H04L12/753 ,  H04L12/723 ,  H04L12/18

Abstract: A multicast data packet processing method performed by an intermediate node of a multicast tree includes: receiving a first Bit Index Explicit Replication (BIER) packet including a first label; obtaining, according to the first label, a second label corresponding to a multicast tree including the intermediate node; and obtaining a second BIER packet according to the second label and the first BIER packet, and sending the second BIER packet which includes the second label.

公开(公告)号：US20210377168A1

公开(公告)日：2021-12-02

申请号：US17319379

申请日：2021-05-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Shuying LIU

IPC: H04L12/741 ,  H04L12/733

Abstract: A BIERv6 packet forwarding method, device, and system. The method includes: receiving, by a first network device, a BIERv6 packet, where the first network device is a BFR or a BFER; determining, by the first network device, whether a value of a hop limit field in the BIERv6 packet is less than or equal to a preset threshold of the first network device, where the preset threshold is a value greater than or equal to 2, and is determined based on a quantity of one or more consecutive second network devices connected to the first network device, and the second network device is a device that does not support BIER forwarding; and when the value of the hop limit field in the BIERv6 packet is less than or equal to the preset threshold, avoiding, by the first network device, forwarding the BIERv6 packet.

公开(公告)号：US20240064099A1

公开(公告)日：2024-02-22

申请号：US18449738

申请日：2023-08-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Donglei PANG ,  Cheng SHENG ,  Haibo WANG ,  Fanghong DUAN ,  Zhibo HU ,  Dapeng CHEN ,  Jingrong XIE

IPC: H04L45/64 ,  H04L45/00 ,  H04L12/18 ,  H04L45/76

CPC classification number: H04L45/64 ,  H04L45/54 ,  H04L12/185 ,  H04L45/76

Abstract: This application discloses a communication method and a related apparatus, and relates to the field of communication technologies. The method is applied to an SD-WAN overlay network. A CPE autonomously generates an SD-WAN overlay routing table, so that communication reliability and flexibility are improved. An RR specifies an overlay multicast RPF route to the CPE to implement SD-WAN overlay multicast communication, and the CPE does not need to perform path computation autonomously, so that a computing power requirement of the CPE is reduced. An identifier of the CPE and an identifier of a site are carried in a multicast join message to implement the SD-WAN overlay multicast communication. A standard IP header is carried in a multicast service packet to implement the SD-WAN overlay multicast communication, so that generalization, applicability, and compatibility are improved.

公开(公告)号：US20240056383A1

公开(公告)日：2024-02-15

申请号：US18495897

申请日：2023-10-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuesong GENG ,  Zhenbin LI ,  Jingrong XIE

IPC: H04L45/17 ,  H04L45/00 ,  H04L45/74

CPC classification number: H04L45/17 ,  H04L45/566 ,  H04L45/74

Abstract: This application provides a packet transmission method, apparatus, and device. For example, the method is performed by an ingress node. The ingress node obtains a second packet by using first node information carried in a first packet, where the first node information includes a first bit string indicating N next-hop devices of the ingress node and first reference information used for indexing second node information corresponding to a first intermediate node in the N next-hop devices, and the second packet includes a first identifier determined based on the first reference information. The ingress node sends the second packet to the first intermediate node. Because structures of the first bit string and the first reference information are used, a packet encoding manner is simple, so that packet transmission efficiency is improved.

公开(公告)号：US20230336478A1

公开(公告)日：2023-10-19

申请号：US18338194

申请日：2023-06-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuesong GENG ,  Zhenbin LI ,  Jingrong XIE

IPC: H04L45/74 ,  H04L45/00

CPC classification number: H04L45/74 ,  H04L45/34

Abstract: A packet transmission method, apparatus, device, and system, and a storage medium are provided. The method includes: A first device obtains a first packet, and determines node information of a second device and node information of a third device from a node information list of the first packet by using a first part included in a destination address field of the first packet. The first device generates, based on the first packet, a second packet including the node information of the second device and a third packet including the node information of the third device. The first device sends the second packet to the second device, and sends the third packet to the third device.

公开(公告)号：US20230231805A1

公开(公告)日：2023-07-20

申请号：US18192037

申请日：2023-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shuping PENG ,  Yang XIA ,  Jingrong XIE

IPC: H04L45/00 ,  H04L45/741

CPC classification number: H04L45/566 ,  H04L45/38 ,  H04L45/741

Abstract: A packet header information obtaining method. The method includes: obtaining, by a communications device, a first packet, where the first packet includes a plurality of extension packet headers; and obtaining an extension header self-describing option from the first packet, where the extension header self-describing option is used to indicate information about the plurality of extension packet headers. Therefore, the communications device obtains, based on the extension header self-describing option in the first packet, a first extension packet header included in the plurality of extension packet headers. Packet header information of the extension packet header in the first packet can be obtained by using the extension header self-describing option, and the first extension packet header that needs to be parsed can be directly located from the first packet by using the obtained packet header information.