公开(公告)号：US11438260B2

公开(公告)日：2022-09-06

申请号：US16998997

申请日：2020-08-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohu Xu

IPC: H04L12/28 ,  H04L45/50 ,  H04L45/00 ,  H04L12/46 ,  H04L45/745

Abstract: A method and an apparatus for forwarding an MPLS data packet are provided, which are used in an environment of hybrid networking of an SR network and a non-SR network. The method includes: when obtaining a to-be-sent MPLS data packet, a first SR router in an SR network determines whether a next-hop router supports an SR characteristic; the first SR router encapsulates the MPLS data packet into an IP tunnel when determining that the next-hop router does not support the SR characteristic, and sends an encapsulated MPLS data packet to the next-hop router to enable the encapsulated MPLS data packet to be forwarded, based on an IP routing table, to a second SR router. According to the application, correct forwarding of an MPLS data packet is completed in an environment of hybrid networking of an SR router and a non-SR router.

公开(公告)号：US11411853B2

公开(公告)日：2022-08-09

申请号：US16818606

申请日：2020-03-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuli Zheng ,  Xiaohu Xu ,  Nongda Hu ,  Chuang Wang ,  Zhe Chen ,  Bingyang Liu

IPC: H04L12/751 ,  H04L12/721 ,  H04L45/02 ,  H04L45/12 ,  H04L45/60

Abstract: This application discloses a link-state advertisement LSA sending method, an apparatus, and a system, to reduce a quantity of LSA sending times. The method includes: generating, by a first router, a first path table based on level location information of the first router, level location information of a second router, and level location information of at least one third router; sending, by the first router, a first link state update LSU message to the second router; receiving, by the second router, the first link state update LSU message from the first router; updating, by the second router, a link state database LSDB of the second router based on a first LSA; and sending, by the second router, the first LSA to a router corresponding to an identifier in the first path table.

公开(公告)号：US10965590B2

公开(公告)日：2021-03-30

申请号：US16442146

申请日：2019-06-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohu Xu

IPC: H04L12/723 ,  H04L12/721 ,  H04L12/775 ,  H04L12/741 ,  H04L12/911 ,  H04L12/64 ,  H04L12/46

Abstract: This application discloses a packet processing method and an LSR. The method includes: receiving, by an Ingress LSR of a first MPLS tunnel, a first notification packet that is based on an IGP, where the first notification packet includes an ELC flag, which is used to indicate that the first Egress LSR has ELC; after learning from the first notification packet that the first Egress LSR has ELC, inserting a label into a first packet, to generate a second packet, where the label forms an MPLS label stack, which includes, from bottom to top, a first EL, a first ELI, and a first TL; and sending the second packet to the first Egress LSR through the first MPLS tunnel. According to the solutions of this invention, a Transit LSR of the first MPLS tunnel may perform load balancing when forwarding the second packet.

公开(公告)号：US10091106B2

公开(公告)日：2018-10-02

申请号：US15078422

申请日：2016-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohu Xu ,  Dacheng Zhang

IPC: H04L12/741 ,  H04L12/46 ,  H04L29/12 ,  H04L12/715

Abstract: This application provides a method for implementing a Layer 3 virtual private network (L3VPN) and an apparatus. The method includes receiving, by a first PE, an attachment notification packet sent by a first terminal device, a first site attaches to an L3VPN by using the first PE; a second site attaches to the L3VPN by using a second PE, and a first terminal device attaches to a second site before attaching to the first site. The method also includes obtaining, by the first PE, an IP address of a second terminal device, and the second terminal device attaches to the second Site; and sending, by the first PE, a binding update notification packet to the first terminal device, where the binding update notification packet carries a MAC address of the first PE and the IP address of the second terminal device.

公开(公告)号：US20170317841A1

公开(公告)日：2017-11-02

申请号：US15655568

申请日：2017-07-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohu Xu

IPC: H04L12/18 ,  H04L12/741

CPC classification number: H04L12/185 ,  H04L12/18 ,  H04L12/1886 ,  H04L12/4641 ,  H04L45/16 ,  H04L45/745

Abstract: A multicast forwarding method and an apparatus, where a bit-forwarding egress router (BFER) in a bit index explicit replication (BIER) network may determine, according to information about a multicast group in a multicast receiver list obtained in advance, an Internet Protocol (IP) address of a registration router that supports the multicast group, the BFER generates a BFER registration message according to the information about the multicast group and the IP address of the registration router that supports the multicast group, where the BFER registration message includes the information about the multicast group, a destination IP address of the BFER registration message is the IP address of the registration router, and a source IP address of the BFER registration message is an IP address of the BFER, and the BFER sends the BFER registration message to the registration router.

公开(公告)号：US20220014497A1

公开(公告)日：2022-01-13

申请号：US17486207

申请日：2021-09-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qing Zeng ,  Xiaohu Xu

IPC: H04L29/12 ,  H04L12/751 ,  H04L12/46 ,  H04L12/741

Abstract: Embodiments of the present disclosure provide a method and a device for storing and sending a MAC address entry, and a system. The method includes: sending, by a PE, a first packet to an RR, so that the RR determines a MAC address entry required by the PE according to the first packet, where the RR pre-stores a MAC address table, and the MAC address table includes the required MAC address entry; and receiving, by the PE, a packet which includes the required MAC address entry and is sent by the RR, and storing the required MAC address entry.

公开(公告)号：US11044652B2

公开(公告)日：2021-06-22

申请号：US16442968

申请日：2019-06-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuli Zheng ,  Xiaohu Xu

IPC: H04W36/14 ,  H04W8/14 ,  H04L9/00 ,  H04W12/0431 ,  H04W12/0433

Abstract: Embodiments of the present disclosure disclose a handover method and an apparatus, so as to reduce a handover delay in a process of handing over an MN from a previous access network to a new access network. The method includes: sending, by the MN, first instruction information to a NAR by using a PAR, where the first instruction information is used to instruct the NAR to construct a care-of test initialization message and send the care-of test initialization message to a CN, and the care-of test initialization message includes an NCoA of the MN and is used to request a care-of keygen token from the CN based on the NCoA; handing over the MN from the PAR to the NAR; receiving, by the MN, the care-of keygen token sent by the NAR from the CN; and binding the MN with the CN based on the care-of keygen token.

公开(公告)号：US10757018B2

公开(公告)日：2020-08-25

申请号：US16360965

申请日：2019-03-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohu Xu

IPC: H04L12/66 ,  H04L12/723 ,  H04L12/721 ,  H04L12/46 ,  H04L12/741

Abstract: A method and an apparatus for forwarding an MPLS data packet are provided, which are used in an environment of hybrid networking of an SR network and a non-SR network. The method is as follows: when obtaining a to-be-sent MPLS data packet, a first SR router in an SR network determines whether a next-hop router supports an SR characteristic; the first SR router encapsulates the MPLS data packet into an IP tunnel when determining that the next-hop router does not support the SR characteristic, and sends an encapsulated MPLS data packet to the next-hop router to enable the encapsulated MPLS data packet to be forwarded, based on an IP routing table, to a second SR router. In this way, correct forwarding of an MPLS data packet is completed in an environment of hybrid networking of an SR router and a non-SR router.

公开(公告)号：US20200220803A1

公开(公告)日：2020-07-09

申请号：US16818606

申请日：2020-03-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuli Zheng ,  Xiaohu Xu ,  Nongda Hu ,  Chuang Wang ,  Zhe Chen ,  Bingyang Liu

IPC: H04L12/751 ,  H04L12/721 ,  H04L12/773

Abstract: This application discloses a link-state advertisement LSA sending method, an apparatus, and a system, to reduce a quantity of LSA sending times. The method includes: generating, by a first router, a first path table based on level location information of the first router, level location information of a second router, and level location information of at least one third router; sending, by the first router, a first link state update LSU message to the second router; receiving, by the second router, the first link state update LSU message from the first router; updating, by the second router, a link state database LSDB of the second router based on a first LSA; and sending, by the second router, the first LSA to a router corresponding to an identifier in the first path table.

公开(公告)号：US20200084180A1

公开(公告)日：2020-03-12

申请号：US16688045

申请日：2019-11-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qing Zeng ,  Xiaohu Xu

IPC: H04L29/12 ,  H04L12/741 ,  H04L12/46 ,  H04L12/751

Abstract: Embodiments of the present disclosure provide a method and a device for storing and sending a MAC address entry, and a system. The method includes: sending, by a PE, a first packet to an RR, so that the RR determines a MAC address entry required by the PE according to the first packet, where the RR pre-stores a MAC address table, and the MAC address table includes the required MAC address entry; and receiving, by the PE, a packet which includes the required MAC address entry and is sent by the RR, and storing the required MAC address entry.