专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US08264962B2 System and method for dynamically responding to event-based traffic redirection 有权
标题翻译：用于动态响应基于事件的流量重定向的系统和方法
公开(公告)号：US08264962B2
公开(公告)日：2012-09-11
申请号：US11168694
申请日：2005-06-27
申请人： Jean-Philippe Vasseur , David D. Ward , Stefano B. Previdi , Clarence Filsfils
发明人： Jean-Philippe Vasseur , David D. Ward , Stefano B. Previdi , Clarence Filsfils
IPC分类号： G01R31/08
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28 , H04L47/70 , H04L47/746 , H04L47/762 , H04L47/825 , H04L47/829
摘要： A technique dynamically resizes Traffic Engineering (TE) Label Switched Paths (LSPs) at a head-end node of the TE-LSPs in preparation to receive redirected traffic in response to an event in a computer network. The novel dynamic TE-LSP resizing technique is based on the detection of an event in the network that could cause traffic destined for one or more other (“remote”) head-end nodes of one or more TE-LSPs to be redirected to an event-detecting (“local”) head-end node of one or more TE-LSPs. An example of such a traffic redirection event is failure of a remote head-end node or failure of any of its TE-LSPs. Specifically, the local head-end node maintains TE-LSP steady state sampling and resizing frequencies to adapt the bandwidth of its TE-LSP(s) to gradual changes in the network over time. Upon detection of an event identifying possible traffic redirection, the local head-end node enters a Fast Resize (FR) state, in which the sampling and resizing frequencies are increased to quickly adapt the TE-LSP bandwidth(s) to any received redirected traffic.
摘要翻译：技术动态地调整TE-LSP的头端节点处的流量工程（TE）标签交换路径（LSP），准备响应于计算机网络中的事件接收重定向的流量。新型动态TE-LSP调整大小技术是基于网络中可能导致一个或多个TE-LSP的一个或多个其他（“远程”）头端节点的流量被重定向到的事件的检测。一个或多个TE-LSP的事件检测（“本地”）头端节点。这种流量重定向事件的示例是远程头端节点的故障或其任何TE-LSP的故障。具体来说，本地前端节点维护TE-LSP稳态采样和调整频率，以适应其TE-LSP的带宽随时间逐渐变化的网络。在检测到识别可能的业务重定向的事件时，本地前端节点进入快速调整大小（FR）状态，其中增加采样和调整大小频率以快速地将TE-LSP带宽适配到任何接收到的重定向业务。

42. 发明申请

US20120221624A1 Client Diversity Policy Sharing with the Transport Layer 有权
标题翻译：客户端多样性策略与传输层共享
公开(公告)号：US20120221624A1
公开(公告)日：2012-08-30
申请号：US13036206
申请日：2011-02-28
申请人： Ornan Gerstel , Anthony J. Li , Clarence Filsfils
发明人： Ornan Gerstel , Anthony J. Li , Clarence Filsfils
IPC分类号： G06F15/16
CPC分类号： H04L45/02 , H04L45/04 , H04L45/62
摘要： Diversity constraints with respect to connections or links in a client layer are conveyed to a server layer where those links or connections are served by paths in the server layer. A network device in the server layer stores data associated paths in the server layer with identifiers for connections in the client layer. The network device in the server layer receives from a network device in the client layer a request to set up a path in the server layer for a connection in the client layer. The network device in the server layer receives information describing the diversity requirements associated with connections in the client layer. The server layer network device computes a route in the server layer for the connection specified in the request based on the diversity requirements.
摘要翻译：关于客户层中的连接或链路的分集约束被传送到服务器层，其中这些链接或连接由服务器层中的路径服务。服务器层中的网络设备在服务器层中存储与客户层中连接的标识符相关的路径。服务器层中的网络设备从客户层中的网络设备接收在客户端层中为连接建立服务器层中的路径的请求。服务器层中的网络设备接收描述与客户层中的连接相关联的分集要求的信息。服务器层网络设备根据分集要求，计算服务器层中针对请求中指定的连接的路由。

43. 发明申请

US20120036279A1 DISTRIBUTED CONNECTIVITY VERIFICATION PROTOCOL REDUNDANCY 有权
标题翻译：分布式连接验证协议冗余
公开(公告)号：US20120036279A1
公开(公告)日：2012-02-09
申请号：US12853006
申请日：2010-08-09
申请人： Sami Boutros , Sylvain Masse , Clarence Filsfils
发明人： Sami Boutros , Sylvain Masse , Clarence Filsfils
IPC分类号： G06F15/16
CPC分类号： H04L43/0811 , H04L41/0663 , H04L45/245 , H04L45/68 , H04L69/16 , Y02D50/30
摘要： In one embodiment, a connectivity verification protocol (CVP) session for a particular virtual interface (VI) may operate on a particular group of two or more line cards (LCs) on a network device. The group of LCs may then transmit CVP session packets, at a reduced rate that is sufficient to maintain the CVP session based on a negotiated CVP full rate, onto the particular VI through ingress path processing on the network device. Ingress path processing, in particular, takes transmitted CVP session packets and egresses them onto an appropriate LC of the network device currently responsible for the VI egress. Also, in response to receiving CVP session packets for the VI on an LC of the network device currently responsible for the VI ingress, the receiving LC may forward the received CVP session packets to the particular corresponding group of LCs, which may then process the received CVP session packets.
摘要翻译：在一个实施例中，用于特定虚拟接口（VI）的连接性验证协议（CVP）会话可以在网络设备上的两个或多个线路卡（LC）的特定组上操作。然后，LC组可以以足够的速率传输CVP会话分组，该速率足以通过协商的CVP全速率将CVP会话维持在通过网络设备上的入口路径处理的特定VI上。入口路径处理特别是将传输的CVP会话数据包发送到当前负责VI出口的网络设备的适当LC上。此外，响应于在当前负责VI入口的网络设备的LC上接收到针对VI的CVP会话分组，接收LC可以将接收的CVP会话分组转发到特定对应的LC组，然后可以处理接收的 CVP会话数据包。

44. 发明授权

US08089968B2 Automatic prioritization of BGP next-hop in IGP convergence 有权
标题翻译：在IGP收敛中自动优先化BGP下一跳
公开(公告)号：US08089968B2
公开(公告)日：2012-01-03
申请号：US12204568
申请日：2008-09-04
申请人： Clarence Filsfils , Stefano B. Previdi , Jean-Philippe Vasseur
发明人： Clarence Filsfils , Stefano B. Previdi , Jean-Philippe Vasseur
IPC分类号： H04L1/00 , H04L12/26
CPC分类号： H04L45/02 , H04L45/04 , H04L45/14
摘要： In one embodiment, an inter-domain routing protocol stores an inter-domain routing protocol route having an associated next-hop address. A routing table is searched for an for an intra-domain routing protocol route that may be used to reach the next-hop address of the inter-domain routing protocol route. Such route is marked as an important route for convergence. Later, in response to a change in the network requiring a routing table update, the intra-domain routing protocol route marked as an important route for convergence is processed by an intra domain routing protocol before any other intra-domain routing protocol routes are processed that are not marked as important routes for convergence.
摘要翻译：在一个实施例中，域间路由协议存储具有相关联的下一跳地址的域间路由协议路由。搜索路由表寻找可用于到达域间路由协议路由的下一跳地址的域内路由协议路由。这种路线被标记为收敛的重要路线。之后，为了响应需要路由表更新的网络的变化，在处理任何其他域内路由协议路由之前，通过域内路由协议来处理标记为收敛的重要路由的域内路由协议路由，没有被标记为收敛的重要路线。

45. 发明授权

US08082340B2 Technique for distinguishing between link and node failure using bidirectional forwarding detection (BFD) 有权
标题翻译：使用双向转发检测（BFD）区分链路和节点故障的技术
公开(公告)号：US08082340B2
公开(公告)日：2011-12-20
申请号：US11343051
申请日：2006-01-30
申请人： Clarence Filsfils , David D. Ward
发明人： Clarence Filsfils , David D. Ward
IPC分类号： G06F15/173
CPC分类号： H04L45/00 , H04L12/40 , H04L12/413 , H04L41/069 , H04L41/12 , H04L43/00 , H04L45/28
摘要： A technique distinguishes between link and node failure using bidirectional forwarding detection (BFD) in a computer network. According to the novel technique, a BFD session is established over a first link between a monitoring node and a first interface of a monitored node. In addition, one or more novel unidirectional BFD (uBFD) sessions from one or more corresponding other interfaces of the monitored node to the monitoring node (e.g., as configured by the monitored node to detect its failure), the one or more uBFD sessions traversing links other than the first link (e.g., “not-via” the monitored node) are established, the one or more uBFD sessions traversing links other than the first link (e.g., “not-via” the monitored node). For instance, the one or more uBFD sessions correspond to one or more line cards of the monitored node. In response to detecting a lack of connectivity resulting from, e.g., failure of the BFD session, the monitoring node determines that the first link has failed if at least one uBFD session is operational. Moreover, in response to detecting failure of the BFD session and all of the one or more uBFD sessions, the monitoring node determines that the monitored node has failed.
摘要翻译：一种技术在计算机网络中使用双向转发检测（BFD）来区分链路和节点故障。根据这种新技术，在被监控节点的监控节点和第一个接口之间的第一个链路上建立BFD会话。另外，一个或多个新颖的单向BFD（uBFD）会话从受监视节点的一个或多个对应的其他接口到监视节点（例如，由监视节点配置以检测其故障），一个或多个uBFD会话遍历建立除第一链路之外的其他链路（例如，“未通过”的被监视节点），一个或多个遍历第一链路以外的链路的uBFD会话（例如，“不通过被监控节点”）。例如，一个或多个uBFD会话对应于被监视节点的一个或多个线路卡。响应于检测到由于例如BFD会话的故障而导致的连接的缺乏，如果至少一个uBFD会话可操作，则监视节点确定第一链路已经失败。此外，响应于检测到BFD会话和所有一个或多个uBFD会话的故障，监视节点确定被监控节点已经失败。

46. 发明申请

US20110280123A1 Multicast label distribution protocol node protection 有权
标题翻译：组播标签分发协议节点保护
公开(公告)号：US20110280123A1
公开(公告)日：2011-11-17
申请号：US12800527
申请日：2010-05-17
申请人： Ijsbrand Wijnands , Clarence Filsfils
发明人： Ijsbrand Wijnands , Clarence Filsfils
IPC分类号： H04L12/24
CPC分类号： H04L45/507
摘要： In one embodiment, a method includes receiving at a router, a multicast label distribution protocol message comprising local node information for a protected node and one or more leaf nodes downstream of the protected node in a primary label switched path, creating one or more backup label switched paths to the one or more leaf nodes, detecting a failure at the protected node, and forwarding at the router, traffic for the one or more leaf nodes to the one or more backup label switched paths. An apparatus for multicast label distribution protocol node protection is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在路由器处接收包括用于受保护节点的本地节点信息和主标签交换路径中的受保护节点下游的一个或多个叶节点的多播标签分发协议消息，从而创建一个或多个备份标签切换到一个或多个叶节点的路径，检测受保护节点处的故障，以及在路由器处转发一个或多个叶节点到一个或多个备份标签交换路径的业务。还公开了一种用于组播标签分发协议节点保护的装置。

47. 发明申请

US20110268130A1 Coordinated Updating of Forwarding Information Bases in a Multistage Packet Switching Device 有权
标题翻译：多级分组交换设备中转发信息库的协调更新
公开(公告)号：US20110268130A1
公开(公告)日：2011-11-03
申请号：US12769946
申请日：2010-04-29
申请人： Yuri Tsier , Parag Kumar Jain , Clarence Filsfils , Sami Boutros , John H. W. Bettink
发明人： Yuri Tsier , Parag Kumar Jain , Clarence Filsfils , Sami Boutros , John H. W. Bettink
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/02 , H04L49/253 , H04L49/3009
摘要： Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with the coordinated updating of forwarding information bases (FIBs) in a multistage packet switching device, which performs at least lookup operations on multiple different FIBs in determining how to forward a packet. One embodiment uses lookup operations on two different FIBs, with these being an ingress FIB on an ingress line card and an egress FIB on an egress line card. In response to a change in the forwarding information for a stream of packets, the egress FIBs are first updated to include both the old and new forwarding information. After all egress FIBs have been updated, the ingress FIBs are updated to use the new forwarding information. This update procedure is designed to eliminate loss or duplication of packets induced during the updating of these FIBs to use the new forwarding information.
摘要翻译：公开了尤其涉及在多级分组交换设备中与转发信息库（FIB）的协调更新相关联的方法，装置，计算机存储介质，机制和装置，其在多个不同的FIB中执行至少查找操作来确定如何转发数据包。一个实施例对两个不同的FIB进行查找操作，这些FIB是入口线卡上的入口FIB和出口线卡上的出口FIB。响应于分组流的转发信息的改变，首先更新出口FIB以包括旧的和新的转发信息。在所有出口FIB已被更新之后，入口FIB被更新以使用新的转发信息。该更新过程旨在消除在更新这些FIB期间引起的分组丢失或重复以使用新的转发信息。

48. 发明授权

US07974285B2 Method and apparatus for identifying an egress point to a network location 有权
标题翻译：用于识别到网络位置的出口点的方法和装置
公开(公告)号：US07974285B2
公开(公告)日：2011-07-05
申请号：US11045015
申请日：2005-01-26
申请人： Stefano Benedetto Previdi , Clarence Filsfils , Jean-Philippe Vasseur , Benoit Claise , David Ward
发明人： Stefano Benedetto Previdi , Clarence Filsfils , Jean-Philippe Vasseur , Benoit Claise , David Ward
IPC分类号： H04L12/28 , H04L12/56 , G06F15/173
CPC分类号： H04L45/02
摘要： A method of identifying an egress point to a network location in a data communications network comprising a plurality of nodes and links there between comprises the step, performed at the identifying node, of receiving a notification through the network advertising an adjacency to a network location. The method further comprises the steps, performed at the identifying node, of deriving from the notification adjacency information and identifying, from the adjacency information, the egress point.
摘要翻译：一种识别包括在其中的多个节点和链路的数据通信网络中的网络位置的出口点的方法包括：在识别节点执行的步骤，通过网络接收通知与网络位置相邻的通知。所述方法还包括在所述识别节点处执行的从所述通知邻接信息导出并从所述邻接信息识别所述出口点的步骤。

49. 发明授权

US07969867B2 Backup route generation in border gateway protocol 有权
标题翻译：边界网关协议中备份路由生成
公开(公告)号：US07969867B2
公开(公告)日：2011-06-28
申请号：US12336469
申请日：2008-12-16
申请人： Eric C. Rosen , Clarence Filsfils , James Neil Guichard , Keyur P. Patel , Pradosh Kumar Mohapatra
发明人： Eric C. Rosen , Clarence Filsfils , James Neil Guichard , Keyur P. Patel , Pradosh Kumar Mohapatra
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28
摘要： A method is provided for generating a backup route. Here, a route and a route distinguisher type associated with the route are received and a backup route is generated based on attributes of the route. A particular backup route distinguisher type that is associated with the route distinguisher type is assigned to the backup route. The backup route with the backup route distinguisher type are then advertised. Another method is provided that identifies the backup route. When the route and its route distinguisher type are received from the advertisement, an identification is made as to whether the route distinguisher type is assigned to a backup route. The route may then be designated as a backup route based on the identification.
摘要翻译：提供了一种用于生成备份路由的方法。这里，接收与路由相关联的路由和路由识别器类型，并且基于路由的属性生成备份路由。与路由识别器类型相关联的特定备份路由识别器类型被分配给备份路由。然后通告备份路由标识符类型的备份路由。提供了另一种标识备份路由的方法。当从广告接收到路由和路由识别器类型时，确定路由识别器类型是否被分配给备份路由。然后可以基于识别将路由指定为备用路由。

50. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式