公开(公告)号：US20120230335A1

公开(公告)日：2012-09-13

申请号：US13045408

申请日：2011-03-10

申请人： Clarence Filsfils ,  Pradosh Mohapatra ,  Sami Boutros

发明人： Clarence Filsfils ,  Pradosh Mohapatra ,  Sami Boutros

IPC分类号： H04L12/56

CPC分类号： H04L45/38 ,  H04L45/7453

摘要： In one embodiment, an edge device of a core network may receive a plurality of packets from a peripheral network having a plurality of active connections to the core network, where each packet has a destination address and a source address. The edge device may compute a hash on the destination address or the source address of each packet, and determine whether the computed hash corresponds to the edge device. In response to the computed hash not corresponding to the edge device, the edge device may drop the packet, and in response to the computed hash corresponding to the edge device, the edge device may process the packet to forward the packet, where the dropping and processing load balances the plurality of packets over the active connections and prevents formation of loops in the core network.

摘要翻译： 在一个实施例中，核心网络的边缘设备可以从具有到核心网络的多个活动连接的外围网络接收多个分组，其中每个分组具有目的地地址和源地址。 边缘设备可以计算目的地址或每个分组的源地址上的散列，并确定所计算的散列是否对应于边缘设备。 响应于不对应于边缘设备的计算哈希，边缘设备可以丢弃该分组，并且响应于与边缘设备相对应的计算出的哈希，边缘设备可以处理分组以转发分组，其中丢弃和 处理负载通过主动连接来平衡多个分组，并且防止在核心网络中形成环路。

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。

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。

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。

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。

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。

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。

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。

公开(公告)号：US07710882B1

公开(公告)日：2010-05-04

申请号：US10792945

申请日：2004-03-03

申请人： Stefano Benedetto Previdi ,  Clarence Filsfils

发明人： Stefano Benedetto Previdi ,  Clarence Filsfils

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04L45/48 ,  H04L45/02 ,  H04L45/028

摘要： A method is disclosed for computing routing information for a data communications network comprising a plurality of nodes. The method comprises the step performed at a computing node of receiving from a remote node in the network a routing information update representing a change of state of the network. The method further comprises processing the update to identify a change of state type and setting, dependent on the change of state type, a delay interval after which routing information is to be computed from the update.

摘要翻译： 公开了一种用于计算包括多个节点的数据通信网络的路由信息​​的方法。 该方法包括在计算节点处从网络中的远程节点接收表示网络状态变化的路由信息​​更新的步骤。 该方法还包括处理更新以根据状态类型的改变来识别状态类型和设置的改变，延迟间隔之后，从更新计算路由信息。

公开(公告)号：US07707307B2

公开(公告)日：2010-04-27

申请号：US10340371

申请日：2003-01-09

申请人： Kevin George Miles ,  Ian Michael Charles Shand ,  Stewart Frederick Bryant ,  Stefano Benedetto Previdi ,  John Anthony Harper ,  Clarence Filsfils

发明人： Kevin George Miles ,  Ian Michael Charles Shand ,  Stewart Frederick Bryant ,  Stefano Benedetto Previdi ,  John Anthony Harper ,  Clarence Filsfils

IPC分类号： G06F15/173 ,  G01R31/08

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。