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1. 发明授权

US07505402B2 Method and apparatus for providing faster convergence for redundant sites 有权
标题翻译：为冗余站点提供更快收敛的方法和装置
公开(公告)号：US07505402B2
公开(公告)日：2009-03-17
申请号：US11159719
申请日：2005-06-23
申请人： Clarence A. M. Filsfils , James N. Guichard , Robert Raszuk , Jean-Philippe Vasseur , Kris Michielsen , Peter De Vriendt
发明人： Clarence A. M. Filsfils , James N. Guichard , Robert Raszuk , Jean-Philippe Vasseur , Kris Michielsen , Peter De Vriendt
IPC分类号： G06F11/00 , G01R31/08 , H04L12/56
CPC分类号： H04L12/66 , H04L41/0668 , H04L45/02 , H04L45/023 , H04L45/04 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/36 , H04L45/58
摘要： A method, apparatus and computer program product for providing convergence for a dual-homed site in a network is presented. An occurrence of a failure between a first Provider Edge (PE) device and a first Customer Edge (CE) device in communication with a dual-homed site is detected. A determination is made whether an alternate route exists for the dual-homed site in a routing table associated with the first PE device. When an alternate route exists then a routing entry associated with the first CE device in a routing table of said first PE device is kept from being deleted for a predetermined amount of time, the routing table is modified to reference the alternate route, the routing entry is rewritten to perform a POP and lookup in a VRF table of the first PE device, and the routing entry is deleted after the predetermined amount of time has elapsed.
摘要翻译：提出了一种用于为网络中的双归位点提供融合的方法，装置和计算机程序产品。检测到与双归位置通信的第一提供商边缘（PE）设备和第一客户边缘（CE）设备之间的故障的发生。确定在与第一PE设备相关联的路由表中是否存在用于双归属站点的备用路由。当存在替代路由时，在所述第一PE设备的路由表中与第一CE设备相关联的路由条目不被删除预定的时间量，所述路由表被修改以引用所述替代路由，所述路由条目被重写以在第一PE设备的VRF表中执行POP和查找，并且在经过预定时间量之后删除路由条目。

2. 发明申请

US20070008878A1 Method and apparatus for providing faster convergence for redundant sites 有权
标题翻译：为冗余站点提供更快收敛的方法和装置
公开(公告)号：US20070008878A1
公开(公告)日：2007-01-11
申请号：US11159719
申请日：2005-06-23
申请人： Clarence Filsfils , James Guichard , Robert Raszuk , Jean-Philippe Vasseur , Kris Michielsen , Peter De Vriendt
发明人： Clarence Filsfils , James Guichard , Robert Raszuk , Jean-Philippe Vasseur , Kris Michielsen , Peter De Vriendt
IPC分类号： G06F11/00
CPC分类号： H04L12/66 , H04L41/0668 , H04L45/02 , H04L45/023 , H04L45/04 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/36 , H04L45/58
摘要： A method, apparatus and computer program product for providing convergence for a dual-homed site in a network is presented. An occurrence of a failure between a first Provider Edge (PE) device and a first Customer Edge (CE) device in communication with a dual-homed site is detected. A determination is made whether an alternate route exists for the dual-homed site in a routing table associated with the first PE device. When an alternate route exists then a routing entry associated with the first CE device in a routing table of said first PE device is kept from being deleted for a predetermined amount of time, the routing table is modified to reference the alternate route, the routing entry is rewritten to perform a POP and lookup in a VRF table of the first PE device, and the routing entry is deleted after the predetermined amount of time has elapsed.
摘要翻译：提出了一种用于为网络中的双归位点提供融合的方法，装置和计算机程序产品。检测到与双归位置通信的第一提供商边缘（PE）设备和第一客户边缘（CE）设备之间的故障的发生。确定在与第一PE设备相关联的路由表中是否存在用于双归属站点的备用路由。当存在替代路由时，在所述第一PE设备的路由表中与第一CE设备相关联的路由条目不被删除预定的时间量，所述路由表被修改以引用所述替代路由，所述路由条目被重写以在第一PE设备的VRF表中执行POP和查找，并且在经过预定时间量之后删除路由条目。

3. 发明授权

US07693047B2 System and method for PE-node protection 有权
标题翻译： PE节点保护的系统和方法
公开(公告)号：US07693047B2
公开(公告)日：2010-04-06
申请号：US11287801
申请日：2005-11-28
申请人： James Guichard , Jean-Philippe Vasseur , Clarence Filsfils , Peter De Vriendt
发明人： James Guichard , Jean-Philippe Vasseur , Clarence Filsfils , Peter De Vriendt
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/04 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/54
摘要： A novel fast reroute (FRR) technique is provided for quickly and efficiently rerouting selected types of network traffic in response to a node or link failure at the edge of a computer network. According to the technique, the network includes first and second edge devices that function as “FRR mates,” such that network traffic originally destined for one FRR mate may be quickly rerouted to the other without having to wait for conventional network convergence. When an edge device receives rerouted packets originally destined for its FRR mate, the device responds by forwarding only those rerouted packets matching the selected traffic types; rerouted packets that do not match the selected traffic types are dropped or otherwise discarded. The first and second edge devices may be statically configured as FRR mates, e.g., by a network administrator, or they may be configured to automatically detect their compatibility as FRR mates.
摘要翻译：提供了一种新颖的快速重路由（FRR）技术，用于响应于计算机网络边缘的节点或链路故障，快速有效地重新路由所选类型的网络流量。根据该技术，该网络包括用作“FRR配对”的第一和第二边缘设备，使得最初发往一个FRR配对的网络业务可能被快速重新路由到另一个，而不必等待传统的网络融合。当边缘设备接收到最初发往FRR配置的重新路由的报文时，设备只通过转发与所选流量类型匹配的那些重新路由的报文进行响应; 与所选流量类型不匹配的重路由数据包将被丢弃或以其他方式丢弃。第一和第二边缘设备可以被静态配置为FRR配对，例如由网络管理员，或者它们可以被配置为自动检测它们作为FRR配对的兼容性。

4. 发明申请

US20070121486A1 System and method for PE-node protection 有权
标题翻译： PE节点保护的系统和方法
公开(公告)号：US20070121486A1
公开(公告)日：2007-05-31
申请号：US11287801
申请日：2005-11-28
申请人： James Guichard , Jean-Philippe Vasseur , Clarence Filsfils , Peter De Vriendt
发明人： James Guichard , Jean-Philippe Vasseur , Clarence Filsfils , Peter De Vriendt
IPC分类号： H04J1/16
CPC分类号： H04L45/04 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/54
摘要： A novel fast reroute (FRR) technique is provided for quickly and efficiently rerouting selected types of network traffic in response to a node or link failure at the edge of a computer network. According to the technique, the network includes first and second edge devices that function as “FRR mates,” such that network traffic originally destined for one FRR mate may be quickly rerouted to the other without having to wait for conventional network convergence. When an edge device receives rerouted packets originally destined for its FRR mate, the device responds by forwarding only those rerouted packets matching the selected traffic types; rerouted packets that do not match the selected traffic types are dropped or otherwise discarded. The first and second edge devices may be statically configured as FRR mates, e.g., by a network administrator, or they may be configured to automatically detect their compatibility as FRR mates.
摘要翻译：提供了一种新颖的快速重路由（FRR）技术，用于响应于计算机网络边缘的节点或链路故障，快速有效地重新路由所选类型的网络流量。根据该技术，网络包括用作“FRR配对”的第一和第二边缘设备，使得最初发往一个FRR配对的网络业务可以被快速地重新路由到另一个，而不必等待传统的网络融合。当边缘设备接收到最初发往FRR配置的重新路由的报文时，设备只通过转发与所选流量类型匹配的那些重新路由的报文进行响应; 与所选流量类型不匹配的重路由数据包将被丢弃或以其他方式丢弃。第一和第二边缘设备可以被静态配置为FRR配对，例如由网络管理员，或者它们可以被配置为自动检测它们作为FRR配对的兼容性。

5. 发明授权

US07898973B2 Convergence measurement in computer network 有权
标题翻译：计算机网络中的收敛度量
公开(公告)号：US07898973B2
公开(公告)日：2011-03-01
申请号：US11807725
申请日：2007-05-30
申请人： Clarence Filsfils , Kris Michielsen , Peter De Vriendt , Emmanuel Tychon
发明人： Clarence Filsfils , Kris Michielsen , Peter De Vriendt , Emmanuel Tychon
IPC分类号： H04L12/28
CPC分类号： H04L45/22 , H04L43/0852 , H04L43/106 , H04L43/12 , H04L45/02 , H04L45/28
摘要： A system and method for measuring convergence performance in a network are disclosed. In one embodiment, the method includes receiving a plurality of probes at a network device, temporarily storing data from at least a portion of the received probes and deleting at least a portion of the temporarily stored data at regular intervals, and receiving a packet indicating a convergence event and storing data from probes received over a predetermined period.
摘要翻译：公开了一种用于测量网络中的会聚性能的系统和方法。在一个实施例中，该方法包括在网络设备处接收多个探测器，临时存储来自所接收的探测器的至少一部分的数据并以规则的间隔删除临时存储的数据的至少一部分，并且接收指示收敛事件并存储来自在预定时段内接收的探测数据。

6. 发明申请

US20080298265A1 Convergence measurement in computer network 有权
标题翻译：计算机网络中的收敛度量
公开(公告)号：US20080298265A1
公开(公告)日：2008-12-04
申请号：US11807725
申请日：2007-05-30
申请人： Clarence Filsfils , Kris Michielsen , Peter De Vriendt , Emmanuel Tychon
发明人： Clarence Filsfils , Kris Michielsen , Peter De Vriendt , Emmanuel Tychon
IPC分类号： G06F11/00
CPC分类号： H04L45/22 , H04L43/0852 , H04L43/106 , H04L43/12 , H04L45/02 , H04L45/28
摘要： A system and method for measuring convergence performance in a network are disclosed. In one embodiment, the method includes receiving a plurality of probes at a network device, temporarily storing data from at least a portion of the received probes and deleting at least a portion of the temporarily stored data at regular intervals, and receiving a packet indicating a convergence event and storing data from probes received over a predetermined period.
摘要翻译：公开了一种用于测量网络中的会聚性能的系统和方法。在一个实施例中，该方法包括在网络设备处接收多个探测器，临时存储来自所接收的探测器的至少一部分的数据并以规则的间隔删除临时存储的数据的至少一部分，并且接收指示收敛事件并存储来自在预定时段内接收的探测数据。

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