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1. 发明申请

US20070091794A1 Method of constructing a backup path in an autonomous system 审中-公开
标题翻译：在自治系统中构建备份路径的方法
公开(公告)号：US20070091794A1
公开(公告)日：2007-04-26
申请号：US11254469
申请日：2005-10-20
申请人： Clarence Filsfils , Stewart Bryant , David Ward , John Scudder , Stefano Previdi , Ian Charles Shand , Gargi Nalawade
发明人： Clarence Filsfils , Stewart Bryant , David Ward , John Scudder , Stefano Previdi , Ian Charles Shand , Gargi Nalawade
IPC分类号： H04J3/14 , H04L12/56
CPC分类号： H04L45/22 , H04L12/66 , H04L45/04 , H04L45/28 , H04L45/50
摘要： A method of constructing a backup path in an autonomous system (AS) for failure of a first inter-AS link serving a first set of prefixes is described. The method comprises identifying an alternate inter-AS link serving said plurality of prefixes and constructing a tunnel thereto.
摘要翻译：描述了在自治系统（AS）中构建用于服务于第一组前缀的第一AS间链路故障的备用路径的方法。该方法包括：识别服务于所述多个前缀的替代的AS间链路，并构建一个隧道。

2. 发明申请

US20070091795A1 Method of constructing a backup path in an autonomous system 有权
标题翻译：在自治系统中构建备份路径的方法
公开(公告)号：US20070091795A1
公开(公告)日：2007-04-26
申请号：US11254587
申请日：2005-10-20
申请人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David Ward , John Scudder , Stefano Previdi , Ian Shand , Gargi Nalawade
发明人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David Ward , John Scudder , Stefano Previdi , Ian Shand , Gargi Nalawade
IPC分类号： H04J3/14 , H04L12/56
CPC分类号： H04L45/22 , H04L45/04 , H04L45/28 , H04L2212/00
摘要： A method of constructing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises identifying an alternate inter-AS path and constructing a tunnel to an end point on the alternate path.
摘要翻译：描述了在自治系统（AS）中构建用于AS间链路故障的备用路径的方法。该方法包括识别替代的AS间路径并构建到备用路径上的终点的隧道。

3. 发明申请

US20070038767A1 Method and apparatus for constructing a backup route in a data communications network 有权
标题翻译：在数据通信网络中构建备份路由的方法和装置
公开(公告)号：US20070038767A1
公开(公告)日：2007-02-15
申请号：US10340371
申请日：2003-01-09
申请人： Kevin Miles , Ian Charles Shand , Stewart Bryant , Stefano Previdi , John Harper , Clarence Filsfils
发明人： Kevin Miles , Ian Charles Shand , Stewart Bryant , Stefano Previdi , John Harper , Clarence Filsfils
IPC分类号： G06F15/16
CPC分类号： H04L45/22 , H04L45/28 , H04L45/48 , H04L69/14 , H04L69/40
摘要： A method is disclosed for constructing a backup route from a source node around an adjacent component. The source node derives a first set of nodes reachable from it without traversing the adjacent component and a second set of nodes from which a neighbor node of adjacent components is reachable without traversing the adjacent component. The source node then constructs a backup route via an intermediate node in the intersection of the first and second sets.
摘要翻译：公开了一种用于从邻近组件周围的源节点构建备用路由的方法。源节点导出可从其到达的第一组节点，而不穿过相邻组件和相邻组件的相邻节点可到达的第二组节点，而不穿过相邻组件。源节点然后经由第一和第二组的交集中的中间节点构建备用路由。

4. 发明申请

US20070091796A1 Method of implementing a backup path in an autonomous system 有权
标题翻译：在自治系统中实现备份路径的方法
公开(公告)号：US20070091796A1
公开(公告)日：2007-04-26
申请号：US11254609
申请日：2005-10-20
申请人： Clarence Filsfils , Stewart Bryant , Ian Shand , David Ward , John Scudder
发明人： Clarence Filsfils , Stewart Bryant , Ian Shand , David Ward , John Scudder
IPC分类号： H04J3/14
CPC分类号： H04L45/00 , H04L45/18 , H04L45/22 , H04L45/28
摘要： A method of implementing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises forwarding data elements destined for the failed link via a backup path and including a loop prevention attribute in the packet.
摘要翻译：描述了在自治系统（AS）中实现AS间链路故障的备用路径的方法。该方法包括经由备份路径转发去往故障链路的数据元素，并在分组中包括环路防止属性。

5. 发明授权

US07864669B2 Method of constructing a backup path in an autonomous system 有权
标题翻译：在自治系统中构建备份路径的方法
公开(公告)号：US07864669B2
公开(公告)日：2011-01-04
申请号：US11254587
申请日：2005-10-20
申请人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David D. Ward , John Galen Scudder , Stefano B. Previdi , Ian Michael Charles Shand , Gargi Nalawade
发明人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David D. Ward , John Galen Scudder , Stefano B. Previdi , Ian Michael Charles Shand , Gargi Nalawade
IPC分类号： H04L12/26
CPC分类号： H04L45/22 , H04L45/04 , H04L45/28 , H04L2212/00
摘要： A method of constructing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises identifying an alternate inter-AS path and constructing a tunnel to an end point on the alternate path.
摘要翻译：描述了在自治系统（AS）中构建用于AS间链路故障的备用路径的方法。该方法包括识别替代的AS间路径并构建到备用路径上的终点的隧道。

6. 发明申请

US20070019646A1 Method and apparatus for constructing a repair path for multicast data 有权
标题翻译：构建组播数据修复路径的方法和装置
公开(公告)号：US20070019646A1
公开(公告)日：2007-01-25
申请号：US11175805
申请日：2005-07-05
申请人： Stewart Bryant , Ian Charles Shand , Toerless Eckert
发明人： Stewart Bryant , Ian Charles Shand , Toerless Eckert
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L12/1868 , H04L45/16 , H04L45/18 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/50
摘要： A method is disclosed for constructing a repair path for multicast data around a non-available component in a data communications network having as components nodes and links therebetween. The method comprises the step performed at a repairing node, of receiving from a notifying node in a network, a notification identifying the notifying node and components through which the notifying node can be reached. The method further comprises the steps of deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification; and constructing a repair path for multicast data for the repair address.
摘要翻译：公开了一种用于在具有作为其间的节点和链接的组件的数据通信网络中构建用于组播数据的修复路径的方法。该方法包括在修复节点执行的步骤，从网络中的通知节点接收识别通知节点的通知和可以到达通知节点的组件。所述方法还包括以下步骤：从所述通知中导出网络维修地址，用于在所述通知中识别的组件不可用的情况下使用; 并修复修复地址的组播数据修复路径。

7. 发明申请

US20050078656A1 Method and apparatus for generating routing information in a data communications network 有权
标题翻译：用于在数据通信网络中生成路由信息的方法和装置
公开(公告)号：US20050078656A1
公开(公告)日：2005-04-14
申请号：US10685621
申请日：2003-10-14
申请人： Stewart Bryant , Ian Charles Shand
发明人： Stewart Bryant , Ian Charles Shand
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L45/123 , H04L45/02
摘要： A method and apparatus are disclosed for generating routing information in a data communications network. A first network element (such as a router) receives information relating to a second network element, such as another node or a network link. In response, the first network element determines whether the information relating to the second network element indicates a change in the network. When information relating to a second network element indicates a change in the network, the first network element determines a new shortest path through the network from the first network element for each network element in the network. After a delay, the first network element updates routing information for the first network element based on the new shortest path for the first network element. Preferably the delay is proportional to the distance of the first network element from the second network element.
摘要翻译：公开了用于在数据通信网络中生成路由信息的方法和装置。第一网络元件（例如路由器）接收与诸如另一节点或网络链路的第二网络元件有关的信息。作为响应，第一网络元件确定与第二网络元件相关的信息是否指示网络中的改变。当与第二网元相关的信息指示网络的变化时，第一网络元件针对网络中的每个网络元件从第一网络元件确定通过网络的新的最短路径。在延迟之后，第一网元基于第一网元的新的最短路径更新第一网元的路由信息。优选地，延迟与第一网络元件与第二网络元件的距离成比例。

8. 发明申请

US20070041379A1 Method and apparatus for advertising repair capability 有权
标题翻译：广告维修能力的方法和装置
公开(公告)号：US20070041379A1
公开(公告)日：2007-02-22
申请号：US11188221
申请日：2005-07-22
申请人： Stefano Previdi , Ian Shand , Stewart Bryant
发明人： Stefano Previdi , Ian Shand , Stewart Bryant
IPC分类号： H04L12/56
CPC分类号： H04L45/22 , H04L29/12783 , H04L45/02 , H04L45/28 , H04L61/35
摘要： A method of advertising repair capability in a network repair scheme using network repair addresses for repairing around a repairable network component in a data communications network having, as components, nodes and links therebetween, comprises establishing whether an alternate repair path is available around a repairable component. If such a repair path is available, the method further comprises issuing a corresponding notification to nodes in the network.
摘要翻译：一种在网络修复方案中使用网络修复地址进行广告维修能力的方法，所述网络修复地址用于修复数据通信网络中的可修复网络组件，所述可修复网络组件具有作为其之间的节点和链路的组件，包括确定备用维修路径是否可用于可修复组件。如果这样的修复路径可用，则该方法还包括向网络中的节点发出相应的通知。

9. 发明授权

US07852772B2 Method of implementing a backup path in an autonomous system 有权
标题翻译：在自治系统中实现备份路径的方法
公开(公告)号：US07852772B2
公开(公告)日：2010-12-14
申请号：US11254609
申请日：2005-10-20
申请人： Clarence Filsfils , Stewart Bryant , Ian Michael Charles Shand , David D. Ward , John Galen Scudder
发明人： Clarence Filsfils , Stewart Bryant , Ian Michael Charles Shand , David D. Ward , John Galen Scudder
IPC分类号： H04L12/26
CPC分类号： H04L45/00 , H04L45/18 , H04L45/22 , H04L45/28
摘要： A method of implementing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises forwarding data elements destined for the failed link via a backup path and including a loop prevention attribute in the packet.
摘要翻译：描述了在自治系统（AS）中实现AS间链路故障的备用路径的方法。该方法包括经由备份路径转发去往故障链路的数据元素，并在分组中包括环路防止属性。

10. 发明授权

US08374092B2 Technique for protecting against failure of a network element using multi-topology repair routing (MTRR) 有权
标题翻译：使用多拓扑修复路由（MTRR）防止网元故障的技术
公开(公告)号：US08374092B2
公开(公告)日：2013-02-12
申请号：US11511128
申请日：2006-08-28
申请人： Stefano B. Previdi , David D. Ward , Jean-Philippe Vasseur , Ian Michael Charles Shand , Stewart Bryant
发明人： Stefano B. Previdi , David D. Ward , Jean-Philippe Vasseur , Ian Michael Charles Shand , Stewart Bryant
IPC分类号： G01R31/08
CPC分类号： H04L41/0668 , H04L41/5003 , H04L43/00 , H04L43/0882 , H04L43/16 , H04L45/02 , H04L45/12 , H04L45/22 , H04L45/28
摘要： A technique protects against failure of a network element using Multi-Topology Repair Routing (MTRR) in a computer network. According to the novel technique, a protecting node (e.g., a router) maintains Multi-Topology Routing (MTR) databases for a first topology and at least a second topology. The protecting node determines whether any acceptable repair paths are available in the first topology for a protected network element (e.g., node, link, etc.) of the first topology. If not, the protecting node may establish a repair path (e.g., for Fast ReRoute, FRR) in the second topology for the protected network element.
摘要翻译：一种技术可以防止网络元件在计算机网络中使用多拓扑修复路由（MTRR）的故障。根据新颖技术，保护节点（例如，路由器）维护用于第一拓扑和至少第二拓扑的多拓扑路由（MTR）数据库。保护节点确定第一拓扑中的受保护网络元件（例如，节点，链路等）的第一拓扑中是否有可接受的修复路径可用。如果不是，保护节点可以在受保护网络元件的第二拓扑中建立修复路径（例如，用于Fast ReRoute，FRR）。

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