公开(公告)号：US10721158B2

公开(公告)日：2020-07-21

申请号：US15690107

申请日：2017-08-29

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Alton Lo ,  Anna Charny

IPC: H04L12/703

Abstract: 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.

公开(公告)号：US20180006932A1

公开(公告)日：2018-01-04

申请号：US15690107

申请日：2017-08-29

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Alton Lo ,  Anna Charny

IPC: H04L12/703 ,  H04L12/707 ,  H04J3/14 ,  H04L12/46 ,  H04L12/773 ,  H04L12/723

Abstract: 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.

公开(公告)号：US09774523B2

公开(公告)日：2017-09-26

申请号：US14537772

申请日：2014-11-10

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Alton Lo ,  Anna Charny

IPC: H04L12/703 ,  H04J3/14 ,  H04L12/46 ,  H04L12/707 ,  H04L12/723 ,  H04L12/773

CPC classification number: H04L45/28 ,  H04J3/14 ,  H04L12/4633 ,  H04L45/22 ,  H04L45/50 ,  H04L45/60

Abstract: 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.

公开(公告)号：US20150063093A1

公开(公告)日：2015-03-05

申请号：US14537772

申请日：2014-11-10

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Alton Lo ,  Anna Charny

IPC: H04L12/703 ,  H04L12/46

CPC classification number: H04L45/28 ,  H04J3/14 ,  H04L12/4633 ,  H04L45/22 ,  H04L45/50 ,  H04L45/60

Abstract: 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.

Abstract translation: 在一个实施例中，沿着包括一个或多个受保护网络的路径的头端节点到目的地建立主隧道，对于该隧道，快速重路由路径可用于在一个或多个网络元件周围传送流量 他们的失败 第一路径质量在一个或多个受保护的网络元件故障之前测量路径质量。 第二路径质量测量在一个或多个受保护网络元件故障之后的路径质量，而快速重路由路径被用于传递主隧道的业务。 确定是否通过不包括一个或多个失败的受保护网络元件的新路径重新建立主隧道，或者响应于第一路径质量之间的差异来继续利用具有快速重路由路径的路径 和第二条路径质量。