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1. 发明授权

US07623535B2 Routing protocol support for half duplex virtual routing and forwarding instance 有权
标题翻译：路由协议支持半双工虚拟路由和转发实例
公开(公告)号：US07623535B2
公开(公告)日：2009-11-24
申请号：US10937661
申请日：2004-09-09
申请人： James Guichard , Robert Hanzl
发明人： James Guichard , Robert Hanzl
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L45/54 , H04L45/02
摘要： A method, apparatus and computer program product for providing dynamic routing support for Half-Duplex Virtual Routing and Forwarding (HDVRF) environments. The method, apparatus and computer program function to configure a forwarding Virtual Routing and Forwarding (VRF) table for a router with information to forward incoming packets to a central location within a hub and spoke environment. The method, apparatus and computer program also function to populate a routing Virtual Routing and Forwarding (VRF) table for the router with routing information received from ingress interfaces of the router. The method, apparatus and computer program function further forwards packets received on egress interfaces of the router according to the forwarding VRF table.
摘要翻译：一种用于为半双工虚拟路由和转发（HDVRF）环境提供动态路由支持的方法，设备和计算机程序产品。方法，设备和计算机程序功能为路由器配置转发虚拟路由和转发（VRF）表，其中信息将信息转发到集线器和辐条环境中的中心位置。方法，装置和计算机程序还可以为路由器填充路由选择路由和路由转发（VRF）表，路由器的路由信息从路由器的入口接口接收。方法，装置和计算机程序功能还根据转发VRF表进一步转发在路由器的出口接口上接收的数据包。

2. 发明授权

US07957408B2 Routing protocol support for half duplex virtual routing and forwarding instance 有权
标题翻译：路由协议支持半双工虚拟路由和转发实例
公开(公告)号：US07957408B2
公开(公告)日：2011-06-07
申请号：US12621834
申请日：2009-11-19
申请人： James Guichard , Robert Hanzl
发明人： James Guichard , Robert Hanzl
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L45/54 , H04L45/02
摘要： A method, apparatus and computer program product for providing dynamic routing support for Half-Duplex Virtual Routing and Forwarding (HDVRF) environments. The method, apparatus and computer program function to configure a forwarding Virtual Routing and Forwarding (VRF) table for a router with information to forward incoming packets to a central location within a hub and spoke environment. The method, apparatus and computer program also function to populate a routing Virtual Routing and Forwarding (VRF) table for the router with routing information received from ingress interfaces of the router. The method, apparatus and computer program function further forwards packets received on egress interfaces of the router according to the forwarding VRF table.
摘要翻译：一种用于为半双工虚拟路由和转发（HDVRF）环境提供动态路由支持的方法，设备和计算机程序产品。方法，设备和计算机程序功能为路由器配置转发虚拟路由和转发（VRF）表，其中信息将信息转发到集线器和辐条环境中的中心位置。方法，装置和计算机程序还可以为路由器填充路由选择路由和路由转发（VRF）表，路由器的路由信息从路由器的入口接口接收。方法，装置和计算机程序功能还根据转发VRF表进一步转发在路由器的出口接口上接收的数据包。

3. 发明申请

US20100061281A1 ROUTING PROTOCOL SUPPORT FOR HALF DUPLEX VIRTUAL ROUTING AND FORWARDING INSTANCE 有权
标题翻译：半双工虚拟路由和转发实例的路由协议支持
公开(公告)号：US20100061281A1
公开(公告)日：2010-03-11
申请号：US12621834
申请日：2009-11-19
申请人： James Guichard , Robert Hanzl
发明人： James Guichard , Robert Hanzl
IPC分类号： H04L5/16 , H04L12/56
CPC分类号： H04L45/54 , H04L45/02
摘要： A method, apparatus and computer program product for providing dynamic routing support for Half-Duplex Virtual Routing and Forwarding (HDVRF) environments. The method, apparatus and computer program function to configure a forwarding Virtual Routing and Forwarding (VRF) table for a router with information to forward incoming packets to a central location within a hub and spoke environment. The method, apparatus and computer program also function to populate a routing Virtual Routing and Forwarding (VRF) table for the router with routing information received from ingress interfaces of the router. The method, apparatus and computer program function further forwards packets received on egress interfaces of the router according to the forwarding VRF table.
摘要翻译：一种用于为半双工虚拟路由和转发（HDVRF）环境提供动态路由支持的方法，设备和计算机程序产品。方法，设备和计算机程序功能为路由器配置转发虚拟路由和转发（VRF）表，其中信息将信息转发到集线器和辐条环境中的中心位置。方法，装置和计算机程序还可以为路由器填充路由选择路由和路由转发（VRF）表，路由器的路由信息从路由器的入口接口接收。方法，装置和计算机程序功能还根据转发VRF表进一步转发在路由器的出口接口上接收的数据包。

4. 发明申请

US20050083955A1 Methods and apparatus to support routing of information 有权
标题翻译：支持信息路由的方法和装置
公开(公告)号：US20050083955A1
公开(公告)日：2005-04-21
申请号：US10674079
申请日：2003-09-29
申请人： James Guichard , Robert Hanzl
发明人： James Guichard , Robert Hanzl
IPC分类号： H04L12/46 , H04L12/56 , H04L29/06 , H04L29/08 , H04L12/28 , G06F15/173
CPC分类号： H04L45/00 , H04L12/4641 , H04L45/302 , H04L63/0892 , H04L67/327 , H04L69/14 , H04L69/329
摘要： A first network node maintains separate routing policy information to forward network traffic depending on a direction of the network traffic. Upstream routing policy information at the first node identifies a second node to forward upstream traffic received from at least a first client communicating through the first node. Downstream routing policy information at the first node identifies how to forward downstream network traffic received from another node to the first client. By preventing use of the downstream policy routing information by the first client to route upstream network traffic, the first node is able to forward traffic along a path that the network traffic otherwise would have not traveled. For example, network traffic communicated through the first node can be forced to travel through another network node through which it would have not otherwise have passed if the downstream policy information was available to route the network traffic.
摘要翻译：第一网络节点维护单独的路由策略信息以根据网络流量的方向来转发网络流量。在第一节点处的上行路由策略信息标识第二节点以转发从至少第一客户端通过第一节点通信的上行流量。第一节点的下行路由策略信息标识如何将从另一个节点接收的下行网络流量转发到第一个客户端。通过防止第一客户端使用下行策略路由信息来路由上游网络流量，第一节点能够沿着网络流量否则不会行进的路径转发流量。例如，如果下行策略信息可用于路由网络流量，则可以强制通过第一节点通信的网络流量经过另一个网络节点，否则该网络将不会通过。

5. 发明申请

US20060050653A1 Routing protocol support for half duplex virtual routing and forwarding instance 有权
公开(公告)号：US20060050653A1
公开(公告)日：2006-03-09
申请号：US10937661
申请日：2004-09-09
申请人： James Guichard , Robert Hanzl
发明人： James Guichard , Robert Hanzl
IPC分类号： H04L12/28
CPC分类号： H04L45/54 , H04L45/02
摘要： A method, apparatus and computer program product for providing dynamic routing support for Half-Duplex Virtual Routing and Forwarding (HDVRF) environments. The method, apparatus and computer program function to configure a forwarding Virtual Routing and Forwarding (VRF) table for a router with information to forward incoming packets to a central location within a hub and spoke environment. The method, apparatus and computer program also function to populate a routing Virtual Routing and Forwarding (VRF) table for the router with routing information received from ingress interfaces of the router. The method, apparatus and computer program function further forwards packets received on egress interfaces of the router according to the forwarding VRF table.

6. 发明授权

US08751613B1 Application layer traffic optimization enhancements for mobile devices 有权
标题翻译：移动设备的应用层流量优化增强功能
公开(公告)号：US08751613B1
公开(公告)日：2014-06-10
申请号：US12942678
申请日：2010-11-09
申请人： Jan Medved , David Ward , James Guichard
发明人： Jan Medved , David Ward , James Guichard
IPC分类号： G06F15/177
CPC分类号： H04L45/021 , H04L29/12066 , H04L41/12 , H04L45/00 , H04L45/028 , H04L45/04 , H04L47/10 , H04L61/1511 , H04L67/1021 , H04L67/104
摘要： In general, techniques are described for enhancing the Application-Layer Traffic Optimization (ALTO) service to supplement network topological grouping with location-based groupings to account for endpoint mobility. For example, as described herein, an ALTO server maintains physical location information for a network of one or more endpoints that provides a service. A PID generator of the ALTO server aggregates the endpoints into a set of one or more PIDs based at least on the physical location information for the endpoints, wherein each PID is associated with a subset of the endpoints. The ALTO server generates network and cost maps for the ALTO service that include PID entries to identify a respective subset of the endpoints associated with each of the set of PIDs and cost entries that incorporate cost that reflect physical distances among endpoints.
摘要翻译：通常，描述了用于增强应用层业务优化（ALTO）服务的技术，以基于位置分组来补充网络拓扑分组以解决端点移动性。例如，如本文所述，ALTO服务器维护提供服务的一个或多个端点的网络的物理位置信息。至少基于端点的物理位置信息，ALTO服务器的PID发生器将端点聚合成一组一个或多个PID，其中每个PID与端点的子集相关联。 ALTO服务器生成包含PID条目的ALTO服务的网络和成本图，以识别与该组PID中的每一个相关联的端点的相应子集以及包含反映端点之间的物理距离的成本的成本条目。

7. 发明授权

US08711838B1 Using network labels without standard-defined syntax and semantics 有权
标题翻译：使用没有标准定义语法和语义的网络标签
公开(公告)号：US08711838B1
公开(公告)日：2014-04-29
申请号：US13243310
申请日：2011-09-23
申请人： James Guichard , David Ward , Jan Medved , Maciek Konstantynowicz
发明人： James Guichard , David Ward , Jan Medved , Maciek Konstantynowicz
IPC分类号： H04L12/28
CPC分类号： H04L12/4633 , H04L12/4645
摘要： In general, techniques are described for transmitting MPLS labels over a network. More specifically, a network device such a router receives a packet to be forwarded according to a label switching protocol, such as Multi-Protocol Label Switching (MPLS). The router may determine a service instance for the packet based on a client device from which the packet originated. The network device may determine one or more services to apply to the packet based on the service instance for the packet and generate a label which having a service instance portion and a service information portion. The network device may append the label to the packet to form an MPLS-encapsulated packet, and may forward the MPLS-encapsulated packet via an output interface according to the label switching protocol.
摘要翻译：通常，描述了通过网络传输MPLS标签的技术。更具体地，诸如路由器的网络设备根据诸如多协议标签交换（MPLS）的标签交换协议来接收要转发的分组。路由器可以基于从其发起分组的客户端设备来确定分组的服务实例。网络设备可以基于分组的服务实例来确定应用于分组的一个或多个服务，并且生成具有服务实例部分和服务信息部分的标签。网络设备可以将标签附加到分组，形成MPLS封装的分组，并且可以根据标签交换协议经由输出接口转发MPLS封装的分组。

8. 发明申请

US20130343174A1 SERVICE PLANE TRIGGERED FAST REROUTE PROTECTION 有权
标题翻译：服务平面触发的快速保护
公开(公告)号：US20130343174A1
公开(公告)日：2013-12-26
申请号：US13533961
申请日：2012-06-26
申请人： James Guichard , David Ward
发明人： James Guichard , David Ward
IPC分类号： H04L12/24 , H04L12/26
CPC分类号： H04L45/28 , H04L41/0659 , H04L41/5025 , H04L45/22
摘要： Techniques are described for detecting failure or degradation of a service enabling technology function independent from an operational state of a service node hosting the service enabling technology function. For example, a service node may provide one or more service enabling technology functions, and service engineered paths may be traffic-engineered through a network to service node network devices that host a service enabling technology function. A monitor component at the service layer of the service node can detect failure or degradation of one or more service enabling technology functions provided by the service node. The monitor component reports detection of failure or degradation to a fault detection network protocol in a forwarding plane of the service node. The fault detection network protocol communicates with an ingress router of a service engineered path to trigger fast reroute by the ingress of traffic flows to bypass the affected service enabling technology function.
摘要翻译：描述了用于检测服务使能技术功能的独立于承载服务使能技术功能的服务节点的操作状态的故障或劣化的技术。例如，服务节点可以提供一个或多个服务启用技术功能，并且服务设计路径可以通过网络进行业务量设计，以服务承载服务使能技术功能的节点网络设备。服务节点的服务层的监视器组件可以检测由服务节点提供的一个或多个服务使能技术功能的故障或劣化。监视器组件报告在服务节点的转发平面中检测到故障检测网络协议的故障或劣化。故障检测网络协议与服务工程路由的入口路由器进行通信，通过流量流入引发快速重路由，绕过受影响的业务使能技术功能。

9. 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。

10. 发明申请

US20060274645A1 Methods and apparatus for error recovery in opaque networks using encrypted error locations 审中-公开
标题翻译：使用加密错误位置的不透明网络中的错误恢复方法和装置
公开(公告)号：US20060274645A1
公开(公告)日：2006-12-07
申请号：US11146520
申请日：2005-06-07
申请人： Richard Bradford , Jean-Philippe Vasseur , James Guichard
发明人： Richard Bradford , Jean-Philippe Vasseur , James Guichard
IPC分类号： H04L12/26
CPC分类号： H04L45/28 , H04L41/0677 , H04L41/12 , H04L45/04 , H04L45/10 , H04L45/22 , H04L63/04
摘要： In response to a failure within a sub-network of a heterogeneous network, an external device is signaled that the failure has occurred by inclusion of an encoded identifier of the failure location with the signaling. The encoded identifier enables identification of the failure location within the sub-network while masking the identity of the failure location to the external device, and may be realized by using an encrypted sub-object or a token that is associated with the failure location information, which remains stored within the sub-network. The external device responds by issuing a path-establishment message indicating that a new communications path should be established and should exclude the failure location as identified by the encoded identifier, which is included in the path-establishment message. A device within the sub-network responds by determining whether a path segment for the new communications path can be provided while excluding the failure location as identified by the encoded identifier from the path-establishment message, and further path-setup functions are performed based on the determination.
摘要翻译：响应于异构网络的子网内的故障，外部设备被发信号通知包含失败位置的编码标识符与信令发生故障。编码的标识符能够识别子网内的故障位置，同时屏蔽到外部设备的故障位置的身份，并且可以通过使用加密的子对象或与故障位置信息相关联的令牌来实现，其保持在子网内。外部设备通过发出指示应该建立新的通信路径的路径建立消息来进行响应，并且应当排除由包含在路径建立消息中的编码标识符标识的故障位置。子网内的设备通过确定是否可以提供用于新通信路径的路径段，同时从路径建立消息中排除由编码标识符识别的故障位置，并且基于决心。

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