公开(公告)号：US20150003451A1

公开(公告)日：2015-01-01

申请号：US14473714

申请日：2014-08-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenbin Li ,  Tieying Huang

IPC: H04L12/18

CPC classification number: H04L12/18 ,  H04L45/123 ,  H04L45/16 ,  H04L45/22

Abstract: Embodiments of the present invention disclose a method and an apparatus for establishing a multicast path. The method includes: when computing a multicast branch path to a first leaf node by using a constraint fails, degrading the constraint to obtain a secondary constraint; computing a multicast branch path to the first leaf node according to the secondary constraint; and establishing a multicast branch path to the first leaf node according to the multicast branch path obtained by computation. By using the method according to the embodiments of the present invention, for a leaf node to which a multicast path cannot be established according to a primary constraint, a substitute multicast path is established according to a secondary constraint, which ensures that service traffic can reach all leaf nodes in a multicast service and that the multicast service for the leaf nodes is quickly recovered when a fault occurs.

Abstract translation: 本发明的实施例公开了一种用于建立多播路径的方法和装置。 该方法包括：当通过使用约束计算到第一叶节点的多播分支路径失败时，降级约束以获得次约束; 根据次要约束计算到第一叶节点的多播分支路径; 根据通过计算获得的多播分支路径，建立到第一叶节点的组播分支路径。 通过使用根据本发明实施例的方法，对于根据主要约束不能建立组播路径的叶节点，根据次要约束建立替代多播路径，确保业务流量可以达到 组播业务中的所有叶节点，并且当发生故障时，叶节点的组播服务快速恢复。

公开(公告)号：US09118556B2

公开(公告)日：2015-08-25

申请号：US13903848

申请日：2013-05-28

Applicant: Huawei Technologies Co., LTD

Inventor： Zhenbin Li ,  Tieying Huang ,  Nan Meng ,  Feng Ke ,  Chun Liu

IPC: H04L12/28 ,  H04L12/24 ,  H04L12/46

CPC classification number: H04L41/0836 ,  H04L12/4633

Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract translation: 一种用于建立隧道的方法包括建立从第一节点到第二节点的第一单向隧道，以及当向第二节点发送第一指令时，发送用于建立第一隧道的反向隧道的第一指令，触发建立 从第二节点到第一节点的第二单向隧道，并将第二隧道绑定到第一隧道作为第一隧道的反向隧道。 还提供了建立隧道的系统。 在建立前向隧道后可以自动触发反向隧道的建立，建立双向隧道。

公开(公告)号：US20130329726A1

公开(公告)日：2013-12-12

申请号：US13903848

申请日：2013-05-28

Applicant: Huawei Technologies Co., LTD.

Inventor： Zhenbin Li ,  Tieying Huang ,  Nan Meng ,  Feng Ke ,  Chun Liu

IPC: H04L12/24

CPC classification number: H04L41/0836 ,  H04L12/4633

Abstract: A method for establishing tunnels includes establishing a first unidirectional tunnel from a first node to a second node, and sending a first instruction for establishing a reverse tunnel of the first tunnel, when sending the first instruction to the second node, triggering the establishment of a second unidirectional tunnel from the second node to the first node, and binding the second tunnel to the first tunnel as the reverse tunnel of the first tunnel. A system for establishing tunnels is also provided. The establishment of a reverse tunnel may be automatically triggered after a forward tunnel is established, and a bidirectional tunnel is established.

Abstract translation: 一种用于建立隧道的方法包括建立从第一节点到第二节点的第一单向隧道，以及当向第二节点发送第一指令时，发送用于建立第一隧道的反向隧道的第一指令，触发建立 从第二节点到第一节点的第二单向隧道，并将第二隧道绑定到第一隧道作为第一隧道的反向隧道。 还提供了建立隧道的系统。 在建立前向隧道后可以自动触发反向隧道的建立，建立双向隧道。