公开(公告)号：US11888726B2

公开(公告)日：2024-01-30

申请号：US17976600

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fengmei Wang ,  Yong Long ,  Xia Chen

IPC: H04L45/16 ,  H04L45/121 ,  H04L12/18 ,  H04L47/125 ,  H04L45/125 ,  H04L45/64 ,  H04L45/50

CPC classification number: H04L45/16 ,  H04L12/18 ,  H04L12/1854 ,  H04L45/121 ,  H04L45/125 ,  H04L45/64 ,  H04L47/125 ,  H04L45/50

Abstract: A path establishment method and a controller are disclosed. The method includes: when detecting a path establishment request for establishing P2MP TE, computing a P2MP TE path by using head node information and tail node information included in the path establishment request; identifying a target branch node in the P2MP TE path, and obtaining a label of the target branch node; and when a third node corresponding to the head node information and the target branch node are not a same node, sending first information to the third node, and sending second information to the target branch node, where the second information is used to instruct the target branch node to generate a multicast forwarding entry. Embodiments of this application can reduce complexity of establishing the P2MP TE path.

公开(公告)号：US10812372B2

公开(公告)日：2020-10-20

申请号：US16243062

申请日：2019-01-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yong Long

IPC: H04L12/721 ,  H04L12/717 ,  H04L12/927 ,  H04L12/725 ,  H04L12/715

Abstract: Embodiments of the present application provide a method for determining a forwarding path and a control device. The method includes: obtaining a first-forwarding-path computation request, where the first-forwarding-path computation request instructs to compute a first forwarding path that is from a source node to a destination node and that satisfies a first constraint; and when the control device computes at least two forwarding paths that satisfy the first constraint, obtaining, based on a mapping relationship between a path computation reference constraint and a priority, a path computation reference constraint having a highest priority, and determining, based on the path computation reference constraint having the highest priority and from the at least two forwarding paths that satisfy the first constraint, at least one forwarding path that satisfies the path computation reference constraint having the highest priority.

公开(公告)号：US20230269173A1

公开(公告)日：2023-08-24

申请号：US17976600

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fengmei Wang ,  Yong Long ,  Xia Chen

IPC: H04L45/16 ,  H04L45/121 ,  H04L12/18 ,  H04L47/125 ,  H04L45/125 ,  H04L45/64

CPC classification number: H04L45/16 ,  H04L12/18 ,  H04L12/1854 ,  H04L45/121 ,  H04L45/125 ,  H04L45/64 ,  H04L47/125 ,  H04L45/50

Abstract: A path establishment method and a controller are disclosed. The method includes: when detecting a path establishment request for establishing P2MP TE, computing a P2MP TE path by using head node information and tail node information included in the path establishment request; identifying a target branch node in the P2MP TE path, and obtaining a label of the target branch node; and when a third node corresponding to the head node information and the target branch node are not a same node, sending first information to the third node, and sending second information to the target branch node, where the second information is used to instruct the target branch node to generate a multicast forwarding entry. Embodiments of this application can reduce complexity of establishing the P2MP TE path.

公开(公告)号：US11502937B2

公开(公告)日：2022-11-15

申请号：US16937236

申请日：2020-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fengmei Wang ,  Yong Long ,  Xia Chen

IPC: H04L45/16 ,  H04L45/121 ,  H04L12/18 ,  H04L47/125 ,  H04L45/125 ,  H04L45/64 ,  H04L45/50

Abstract: A path establishment method and a controller are disclosed. The method includes: when detecting a path establishment request for establishing P2MP TE, computing a P2MP TE path by using head node information and tail node information included in the path establishment request; identifying a target branch node in the P2MP TE path, and obtaining a label of the target branch node; and when a third node corresponding to the head node information and the target branch node are not a same node, sending first information to the third node, and sending second information to the target branch node, where the second information is used to instruct the target branch node to generate a multicast forwarding entry. Embodiments of this application can reduce complexity of establishing the P2MP TE path.

公开(公告)号：US10749788B2

公开(公告)日：2020-08-18

申请号：US16185994

申请日：2018-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fengmei Wang ,  Yong Long ,  Xia Chen

IPC: H04L12/761 ,  H04L12/727 ,  H04L12/18 ,  H04L12/803 ,  H04L12/729 ,  H04L12/715 ,  H04L12/723

Abstract: A path establishment method and a controller are disclosed. The method includes: when detecting a path establishment request for establishing P2MP TE, computing a P2MP TE path by using head node information and tail node information included in the path establishment request; identifying a target branch node in the P2MP TE path, and obtaining a label of the target branch node; and when a third node corresponding to the head node information and the target branch node are not a same node, sending first information to the third node, and sending second information to the target branch node, where the second information is used to instruct the target branch node to generate a multicast forwarding entry. Embodiments of this application can reduce complexity of establishing the P2MP TE path.