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71. 发明授权

US07675926B2 Hierarchical QoS behavioral model 有权
标题翻译：分层QoS行为模型
公开(公告)号：US07675926B2
公开(公告)日：2010-03-09
申请号：US10840126
申请日：2004-05-05
申请人： Robert Olsen , Michael Laor , Clarence Filsfils
发明人： Robert Olsen , Michael Laor , Clarence Filsfils
IPC分类号： H04L12/56
CPC分类号： H04L47/6215 , H04L41/044 , H04L47/2441 , H04L47/30 , H04L47/326 , H04L47/50 , H04L47/52 , H04L47/60
摘要： A hierarchical traffic management system and method (i.e., a QoS behavioral model) are disclosed herein. The system includes a classifier operable to identify and classify incoming traffic streams and a queuing system. The queuing system includes a plurality of queues and is operable to apply scheduling policies to the traffic streams. The queues of the queuing system each include enqueue attributes configured to control a depth of the queue and dequeue attributes configured to control scheduling of the queue. The dequeue attributes include minimum bandwidth, maximum bandwidth, excess bandwidth, and priority, wherein each of the queues has one or more of the dequeue attributes defined.
摘要翻译：本文公开了分级业务管理系统和方法（即，QoS行为模型）。该系统包括可用于识别和分类输入业务流的分类器和排队系统。排队系统包括多个队列，并且可操作以将调度策略应用于业务流。排队系统的队列每个都包括配置为控制队列深度的入队属性，并将配置为控制队列调度的属性出队。出队属性包括最小带宽，最大带宽，超额带宽和优先级，其中每个队列具有定义的一个或多个出队属性。

72. 发明申请

US20090225671A1 Monitoring Quality of a Packet Flow in Packet-Based Communication Networks 有权
标题翻译：在基于分组的通信网络中监测分组流的质量
公开(公告)号：US20090225671A1
公开(公告)日：2009-09-10
申请号：US12043203
申请日：2008-03-06
申请人： Yuki Arbel , Michael Keohane , Ravid Sagy , Oren Shemesh , Clarence Filsfils
发明人： Yuki Arbel , Michael Keohane , Ravid Sagy , Oren Shemesh , Clarence Filsfils
IPC分类号： H04L12/26
CPC分类号： H04L43/00 , H04L43/0829 , H04L43/0852 , H04L43/12
摘要： A communication system includes multiple routers interconnected by a packet-based communication network. Each of the routers includes a monitoring application that monitors quality of one or more packet flows during each of multiple successive monitoring periods. For each of the packet flows, the monitoring application determines quality metrics based on information obtained from transport headers of packets.
摘要翻译：通信系统包括通过基于分组的通信网络互连的多个路由器。每个路由器包括监视应用程序，其监视在多个连续监视周期期间的每一个期间一个或多个分组流的质量。对于每个分组流，监视应用基于从分组的传输报头获得的信息来确定质量度量。

73. 发明申请

US20090122805A1 Instrumenting packet flows 有权
标题翻译：测试数据包流
公开(公告)号：US20090122805A1
公开(公告)日：2009-05-14
申请号：US11985239
申请日：2007-11-14
申请人： Gary Paul Epps , David Delano Ward , John H. W. Bettink , Christopher Yates Satterlee , Mohammed Ismael Tatar , Clarence Filsfils
发明人： Gary Paul Epps , David Delano Ward , John H. W. Bettink , Christopher Yates Satterlee , Mohammed Ismael Tatar , Clarence Filsfils
IPC分类号： H04L12/56
CPC分类号： H04L41/5009 , H04L41/5003 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/16
摘要： Disclosed are, inter alia, methods, apparatus, computer-readable media, mechanisms, and means for instrumenting real-time customer packet traffic. These measured delays can be used to determine whether or not the performance of a packet switching device and/or network meets desired levels, especially for complying with a Service Level Agreement.
摘要翻译：公开的方法，装置，计算机可读介质，机制和装置用于实时客户分组流量的装置。这些测量的延迟可以用于确定分组交换设备和/或网络的性能是否满足期望的水平，特别是对于遵守服务水平协议。

74. 发明授权

US07496650B1 Identifying and suppressing transient routing updates 有权
标题翻译：识别和抑制瞬态路由更新
公开(公告)号：US07496650B1
公开(公告)日：2009-02-24
申请号：US10811626
申请日：2004-03-29
申请人： Stefano Benedetto Previdi , John Galen Scudder , Clarence Filsfils , David Delano Ward
发明人： Stefano Benedetto Previdi , John Galen Scudder , Clarence Filsfils , David Delano Ward
IPC分类号： G06F15/173 , G01R31/08 , H04L12/28
CPC分类号： H04L45/028 , H04L45/22 , H04L45/28 , H04L45/48 , H04L69/14 , H04L69/40
摘要： One or more sets of routing information are maintained. A network topology change indication of a progressive series of network changes is received, with at least one more associated network topology change indication of the progressive series of network changes expected to be received in the future. An updated set of routing information is computed based on the network topology change indication, and a determination is made as to whether or not the updated set of routing information changes nexthop information for one or more routes. In response to determining that the new set of routing information does not change nexthop information for said one or more routes and given the expectation of at least one more associated network topology change indication of the progressive series of network changes is expected to be received in the future, the routing information is not updated based on the updated set of routing information.
摘要翻译：维护一组或多组路由信息。接收到逐渐的一系列网络改变的网络拓扑变化指示，其中至少一个更多关联的网络拓扑改变预期在将来接收的渐进的一系列网络变化的指示。基于网络拓扑变化指示计算更新的路由信息集合，并且确定更新的路由信息集合是否改变一个或多个路由的下一跳信息。响应于确定新的路由信息集合不会改变用于所述一个或多个路由的下一跳信息，并且给出期望至少一个更相关联的网络拓扑结构的变化指示逐渐的一系列网络改变将在未来，路由信息不会根据更新的路由信息集进行更新。

75. 发明申请

US20090010153A1 Fast remote failure notification 有权
标题翻译：快速远程故障通知
公开(公告)号：US20090010153A1
公开(公告)日：2009-01-08
申请号：US11824885
申请日：2007-07-03
申请人： Clarence Filsfils , Stefano Previdi , David Ward
发明人： Clarence Filsfils , Stefano Previdi , David Ward
IPC分类号： H04L12/24
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28 , H04L67/14 , H04L69/40
摘要： A method and system for failure notification at a remote node in communication with a local node are disclosed. The local node is configured for faster failure detection than the remote node. In one embodiment, the method includes establishing a failure monitoring session between the local node and the remote node, receiving at the remote node, a failure notification from the local node, the failure notification sent using a protocol of the failure monitoring session, and rerouting traffic at the remote node in response to the failure notification.
摘要翻译：公开了一种在与本地节点通信的远程节点处的故障通知的方法和系统。本地节点配置为比远程节点更快的故障检测。在一个实施例中，该方法包括在本地节点和远程节点之间建立故障监视会话，在远程节点接收来自本地节点的故障通知，使用故障监视会话的协议发送的故障通知和重新路由响应故障通知在远程节点的流量。

76. 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。

77. 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。

78. 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。

79. 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。

80. 发明申请

US20060221813A1 Loop prevention techniques using encapsulation manipulation of IP/MPLS field 有权
标题翻译：使用IP / MPLS领域的封装处理的环路预防技术
公开(公告)号：US20060221813A1
公开(公告)日：2006-10-05
申请号：US11098173
申请日：2005-04-04
申请人： John Scudder , David Ward , Clarence Filsfils
发明人： John Scudder , David Ward , Clarence Filsfils
IPC分类号： H04L12/56 , H04J1/16 , H04J3/14 , G08C15/00 , H04L12/28
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28 , H04L45/50 , H04L47/2408
摘要： A fast reroute (FRR) technique is implemented at the edge of a computer network. In accordance with the technique, if an edge device detects a node or link failure that prevents it from communicating with a neighboring routing domain, the edge device reroutes at least some data packets addressed to that domain to a backup edge device which, in turn, forwards the packets to the neighboring domain. The rerouted packets are designated as being “protected” (i.e., rerouted) data packets before they are forwarded to the backup edge device. To that end, the edge device incorporates an identifier into the rerouted data packets to indicate that the packets are being FRR rerouted. The identifier may be a predetermined value stored at a known location in the rerouted packets'encapsulation headers, such as in their MPLS or IP headers. Upon receiving a data packet containing the identifier, the backup edge device is not permitted to reroute the packet a second time.
摘要翻译：在计算机网络的边缘实现快速重路由（FRR）技术。根据该技术，如果边缘设备检测到阻止其与相邻路由域通信的节点或链路故障，则边缘设备将至少一些寻址到该域的数据分组重新路由到备用边缘设备，将数据包转发到相邻域。重新路由的数据包在被转发到备份边缘设备之前被指定为“保护”（即重新路由）数据分组。为此，边缘设备将重新路由的数据分组中的标识符合并，以指示分组正在被FRR重新路由。标识符可以是存储在重新路由的分组的封装报头中的已知位置的预定值，例如在其MPLS或IP报头中。在接收到包含标识符的数据分组时，不允许备份边缘设备再次重新路由该分组。

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