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Technique for determining whether to reestablish fast rerouted primary tunnels based on backup tunnel path quality feedback

摘要

In one embodiment, a primary tunnel is established from a head-end node to a destination along a path including one or more protected network elements for which a fast reroute path is available to pass traffic around the one or more network elements in the event of their failure. A first path quality measures path quality prior to failure of the one or more protected network elements. A second path quality measures path quality subsequent to failure of the one or more protected network elements, while the fast reroute path is being used to pass traffic of the primary tunnel. A determination is made whether to reestablish the primary tunnel over a new path that does not include the one or more failed protected network elements, or to continue to utilize the path with the fast reroute path, in response to a difference between the first path quality and the second path quality.

著录项

  • 公开/公告号US10721158B2

    专利类型

  • 公开/公告日2020.07.21

    原文格式PDF

  • 申请/专利权人

    申请/专利号US15690107

  • 申请日2017.08.29

  • 分类号

  • 国家 US

  • 入库时间 2022-08-21 10:59:25

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