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91. 发明授权

US08266322B2 Verification of configuration information in BGP VPNs 有权
标题翻译：验证BGP VPN中的配置信息
公开(公告)号：US08266322B2
公开(公告)日：2012-09-11
申请号：US12649562
申请日：2009-12-30
申请人： David Allan
发明人： David Allan
IPC分类号： G06F15/177
CPC分类号： H04L41/0869 , H04L41/0873 , H04L63/0272
摘要： Described are mechanisms for verifying configuration information in 2547 BGP VPNs. An originating PE generates a first knowledge digest encoding first configuration information associated with a current set of information advertised for a VRF. The originating PE also generates a second knowledge digest encoding second configuration information associated with cumulative information advertised for the VRF. The originating PE is capable of receiving a message from a user PE, the message including a third knowledge digest encoding third configuration information related to the user VRF. The originating PE is capable of comparing the first knowledge digest to the third knowledge digest and producing a first indication if the third configuration information encoded in the third knowledge digest is not a subset of the first configuration information encoded in the first knowledge digest.
摘要翻译：描述了2547个BGP VPN中验证配置信息的机制。始发PE生成与为VRF通告的当前信息集相关联的第一配置信息的第一知识摘要。始发PE还生成与为VRF通告的累积信息相关联的第二配置信息的第二知识摘要。始发PE能够从用户PE接收消息，该消息包括编码与用户VRF相关的第三配置信息的第三知识摘要。如果第三知识摘要中编码的第三配置信息不是第一知识摘要中编码的第一配置信息的子集，则始发PE能够将第一知识摘要与第三知识摘要进行比较，并产生第一指示。

92. 外观设计

USD648997S1 Portable angle impact tool 有权
标题翻译：便携式角度冲击工具
公开(公告)号：USD648997S1
公开(公告)日：2011-11-22
申请号：US29387791
申请日：2011-03-18
申请人： David Allan , Wei Song
设计人： David Allan , Wei Song

93. 发明授权

US07839891B1 Method for using a knowledge digest to verify configuration information in a network 有权
标题翻译：使用知识摘要来验证网络中的配置信息的方法
公开(公告)号：US07839891B1
公开(公告)日：2010-11-23
申请号：US10385942
申请日：2003-03-11
申请人： David Allan
发明人： David Allan
IPC分类号： H04J3/16
CPC分类号： H04L41/0869 , H04L9/3236 , H04L43/0811 , H04L45/00 , H04L45/02 , H04L45/026 , H04L45/50
摘要： A first network element forwards a set of packets associated with first configuration information along a path to a second network element. Logic in the first network element generates a first knowledge digest encoding the first configuration information into a fixed length bit array. Logic in the second network element generates a second knowledge digest encoding second configuration information into a fixed length bit array. Logic in the second network element compares the first knowledge digest to the second knowledge digest, and generates an indication if the comparison indicates that the first configuration information is not a subset of the second configuration information.
摘要翻译：第一网络元件将与路径的第一配置信息相关联的一组分组转发到第二网络元件。第一网络元件中的逻辑产生将第一配置信息编码为固定长度位阵列的第一知识摘要。第二网元中的逻辑产生将第二配置信息编码为固定长度位阵列的第二知识摘要。所述第二网元中的逻辑将所述第一知识摘要与所述第二知识摘要进行比较，并且如果所述比较指示所述第一配置信息不是所述第二配置信息的子集，则生成指示。

94. 发明申请

US20100080238A1 Extended Private LAN 有权
标题翻译：扩展专用LAN
公开(公告)号：US20100080238A1
公开(公告)日：2010-04-01
申请号：US12241312
申请日：2008-09-30
申请人： David Allan , Liam Casey
发明人： David Allan , Liam Casey
IPC分类号： H04L12/28
CPC分类号： H04L12/4662
摘要： A virtual private network is provided across a Provider Link State Bridging (PLSB) network between a first node connected to a private LAN and a second node connected to a roaming device. The roaming device is authenticated. A successful authentication results in a Service Identifier for the VPN being sent to the second node. Connectivity between members of the VPN service instance is maintained as part of the PLSB Link State process for forwarding table maintenance, rather than by any form of explicit signalling. A single Customer Virtual Bridge/Virtual Switch Instance can be located at the first node to provide point-to-point connectivity to each roaming device. A virtual Residential Gateway function can be combined with the Customer Virtual Bridge/Virtual Switch Instance.
摘要翻译：在连接到专用LAN的第一节点和连接到漫游设备的第二节点之间的提供商链路状态桥接（PLSB）网络之间提供虚拟专用网络。漫游设备进行身份验证。成功的认证导致发送到第二个节点的VPN的服务标识符。作为用于转发表维护的PLSB链路状态过程的一部分，而不是任何形式的显式信令，VPN服务实例的成员之间的连接被维护。单个客户虚拟桥/虚拟交换机实例可以位于第一个节点，为每个漫游设备提供点对点连接。虚拟住宅网关功能可以与客户虚拟桥接/虚拟交换机实例相结合。

95. 发明授权

US07680923B1 Connectivity assessment for label distribution protocol (LDP) networks 有权
标题翻译：标签分发协议（LDP）网络的连通性评估
公开(公告)号：US07680923B1
公开(公告)日：2010-03-16
申请号：US10745061
申请日：2003-12-22
申请人： David Allan
发明人： David Allan
IPC分类号： G06F15/173 , G06F15/16
CPC分类号： H04L43/50 , H04L41/082 , H04L41/0866 , H04L41/0889 , H04L43/026 , H04L43/0811 , H04L43/10 , H04L43/12 , H04L45/00 , H04L45/50 , H04L67/1095
摘要： Probe and stop probe messages associated with an ingress access point are processed at an egress label switched router. The ingress access point may consist of an identifier of an ingress network element, in combination with a LSP identifier provided by the ingress network element. Auto-registration is performed upon receipt of a probe message indicating an ingress access point not currently being tracked. In the event that a probe message is received indicating an ingress access point not currently being tracked, the egress label switched router adds an entry to a tracking data structure, and a central processor is notified. Each entry within the tracking data structure stores information for a corresponding ingress access point, including knowledge digests from probe messages and an indication of the time a last previous probe message was received. As probe and stop probe messages are received, the knowledge digests they include are compared with the knowledge digests stored in the corresponding tracking table entries. In the event of a conflict between a received knowledge digest and a stored knowledge digest, a predetermined action is taken, such as generation of a misbranching alarm. The knowledge digests may, for example, be Bloom Filters. In the event a stop probe message is received for an ingress access point associated with one of the entries in the tracking table, the corresponding tracking entry is removed.
摘要翻译：探测和停止与入口接入点相关联的探测消息在出口标签交换路由器处理。入口接入点可以由入口网元的标识符组成，与由入口网元提供的LSP标识符组合。在接收到指示当前未被跟踪的入口接入点的探测消息时，执行自动注册。在接收到指示当前未被跟踪的入口接入点的探测消息的情况下，出口标签交换路由器向跟踪数据结构添加条目，并通知中央处理器。跟踪数据结构中的每个条目存储用于相应入口接入点的信息，包括来自探测消息的知识摘要和接收到最后一个探测消息的时间的指示。当接收到探测和停止探测消息时，将其包含的知识摘要与存储在相应的跟踪表条目中的知识摘要进行比较。在接收到的知识摘要和存储的知识摘要之间发生冲突的情况下，采取预定的动作，例如生成分错报警。知识摘要可以是例如Bloom Filters。在与跟踪表中的一个条目相关联的入口接入点接收到停止探测消息的情况下，相应的跟踪条目被移除。

96. 发明授权

US07620712B1 Availability measurement in networks 有权
标题翻译：网络中的可用性测量
公开(公告)号：US07620712B1
公开(公告)日：2009-11-17
申请号：US10385995
申请日：2003-03-11
申请人： David Allan
发明人： David Allan
IPC分类号： G06F15/173
CPC分类号： H04L43/50 , H04L41/0873 , H04L43/00 , H04L43/0811 , H04L43/10 , H04L43/12 , H04L45/00 , H04L45/502 , H04L45/507 , H04L67/1095
摘要： Mechanisms for measuring network availability are described. A first network element produces a first knowledge digest encoding the first set of forwarding policy indicators associated with a set of packets into a fixed length bit array. The first network element periodically sends probe messages containing the knowledge digest to a second network element. The second network element produces a second knowledge digest encoding a second set of forwarding policy indicators into a fixed length bit array. The second network element compares the first knowledge digest to the second knowledge digest to determine whether the first set of forwarding policy indicators is a subset of the second set of forwarding policy indicators. The second network element indicates the availability of the path as long as probe messages are received from the first network element.
摘要翻译：描述了测量网络可用性的机制。第一网络元件产生将与一组分组相关联的第一组转发策略指示符编码为固定长度位阵列的第一知识摘要。第一网络元件周期性地将包含知识摘要的探测消息发送到第二网络元件。第二网络元件产生将第二组转发策略指示符编码为固定长度位阵列的第二知识摘要。第二网络元件将第一知识摘要与第二知识摘要进行比较，以确定第一组转发策略指示符是否是第二组转发策略指示符的子集。只要从第一个网络元件接收到探测消息，第二个网络元素就指示路径的可用性。

97. 发明申请

US20080219172A1 Forwarding Plane Data Communications Channel for Ethernet Transport Networks 有权
标题翻译：用于以太网传输网络的转发平面数据通信信道
公开(公告)号：US20080219172A1
公开(公告)日：2008-09-11
申请号：US11996561
申请日：2006-09-12
申请人： Dinesh Mohan , David Allan
发明人： Dinesh Mohan , David Allan
IPC分类号： G06F11/00
CPC分类号： H04L43/00 , H04L12/4625 , H04L41/046 , H04L41/0893 , H04L43/0811
摘要： Described is a process and system for providing an extensible forwarding plane data communications channel adapted to selectively support operations, administration and maintenance (OAM) activity within one or more different domains of an Ethernet transport network. The data communication channel is established using Ethernet protocol data units forwarded within the forwarding plane, between network elements. The Ethernet protocol data units can be Ethernet OAM frames modified to include an OpCode indicative of a maintenance communication channel. The OAM frames are generated at a selected one of the network elements (source), forwarded along the same network path as the Ethernet frames, and terminate at another network element (destination) associated with a maintenance level identified within the OAM frame. The source and destination network elements can reside on a domain boundary using the Ethernet OAM frames flowing therebetween to relay maintenance communications channel messages.
摘要翻译：描述了用于提供可扩展的转发平面数据通信信道的过程和系统，其适于选择性地支持以太网传输网络的一个或多个不同域内的操作，管理和维护（OAM）活动。使用在转发平面内转发的以太网协议数据单元在网元之间建立数据通信信道。以太网协议数据单元可以是修改为包括指示维护通信信道的OpCode的以太网OAM帧。在所选网络元件（源）中生成OAM帧，其沿着与以太网帧相同的网络路径转发，并终止于与OAM帧内识别的维护级别相关联的另一网络元件（目的地）。源和目标网元可以使用在其间流动的以太网OAM帧来驻留在域边界上，以中继维护通信信道消息。

98. 发明授权

US07359328B1 Apparatus for using a verification probe in an LDP MPLS network 有权
标题翻译：在LDP MPLS网络中使用验证探测器的设备
公开(公告)号：US07359328B1
公开(公告)日：2008-04-15
申请号：US10385965
申请日：2003-03-11
申请人： David Allan
发明人： David Allan
IPC分类号： G06F11/00 , H04L1/00
CPC分类号： H04L49/555 , H04L43/0811 , H04L43/12
摘要： An ingress multi-protocol label switching (MPLS) label switched router (LSR) forwards a set of packets associated with a first set of forwarding equivalence classes (FECs) along a label switched path (LSP) to an egress MPLS LSR. Logic in the ingress MPLS LSR produces an operation and maintenance (OAM) connectivity verification probe message encoding the first set of FECs, and forwards the OAM connectivity verification probe message along the LSP to the egress MPLS LSR. Logic in the egress MPLS LSR produces an encoding of a second set of FECs. Logic in the egress MPLS LSR compares the encoding of the first set of FECs in the connectivity verification probe message to the encoding of the second set of FECs, and produces an indication if the comparison indicates that the first set of FECs is not a subset of the second set of FECs.
摘要翻译：入口多协议标签交换（MPLS）标签交换路由器（LSR）将与第一组转发等价类（FEC）相关联的一组分组沿标签交换路径（LSP）转发到出口MPLS LSR。入口中的逻辑MPLS LSR产生编码第一组FEC的操作和维护（OAM）连接性验证探测消息，并将沿着LSP的OAM连接性验证探测消息转发到出口MPLS LSR。出口中的逻辑MPLS LSR产生第二组FEC的编码。出口中的逻辑MPLS LSR将连通性验证探测消息中的第一组FEC的编码与第二组FEC的编码进行比较，并且如果比较指示第一组FEC不是第二组FEC。

99. 发明授权

US08315255B1 Psuedo wire merge for IPTV 失效
标题翻译： PSuedo电汇合并IPTV
公开(公告)号：US08315255B1
公开(公告)日：2012-11-20
申请号：US11262664
申请日：2005-10-31
申请人： Liam Casey , David Allan
发明人： Liam Casey , David Allan
IPC分类号： H04L12/28
CPC分类号： H04L12/4662
摘要： The downstream IP packets of uni-cast services, such as Internet Access or Voice over IP network, are transported over the pseudo wire from service provider nodes at the metro hub to the access edge, whereupon they are converted to be transported on the first mile technology, such as a DSL loop, that serves the subscriber's residence. A television service provider delivers the collection of television channels through the regional network to an intermediate node, herein called the metro edge device. The function of the metro edge for downstream uni-cast traffic is to de-multiplex the downstream pseudo-wires coming on packet trunks from metro hubs, into a greater number of packet trunks leading to access edges. In this invention the metro edge device is operable to unicast individual selected channels to the subscriber's residence by adding copies of the IP packets of the selected channels into the downstream flow of packets in the subscriber's pseudo wire.
摘要翻译：单播业务（如Internet接入或IP语音网络）的下行IP数据包通过伪线从城域中心的服务提供商节点传输到接入边，由此转换为在第一英里技术，如DSL循环，为用户的住所提供服务。电视服务提供商通过区域网络将电视频道的收集提供给中间节点，这里称为城域边缘设备。用于下行单播业务的城域边缘的功能是将来自城域中心的分组干线上的下游伪线解复用到导致接入边缘的更多数量的分组中继。在本发明中，城域边缘设备可操作以通过将所选频道的IP分组的副本添加到用户伪线中的分组的下游流中来将单独的所选频道单播到用户的住宅。

100. 发明申请

US20090041023A1 Method and Apparatus for Interworking VPLS and Ethernet Networks 失效
标题翻译： VPLS和以太网互通的方法和装置
公开(公告)号：US20090041023A1
公开(公告)日：2009-02-12
申请号：US12104598
申请日：2008-04-17
申请人： Hamid Ould Brahim , David Allan , Dinesh Mohan
发明人： Hamid Ould Brahim , David Allan , Dinesh Mohan
IPC分类号： H04L12/56
CPC分类号： H04L12/66 , H04L12/4633 , H04L12/465 , H04L12/4654 , H04L12/4658
摘要： To allow seamless interworking between an 802.1ah service instance (ISID) and a VPLS service instance, the AGI value used to signal the setup of the pseudowire portion of the VPLS may carry the ISID value of an associated 802.1ah service instance. This allows the service instance to be identified end-to-end across the Ethernet and VPLS networks using the same value without modifying how the MPLS network operates. The VPLS network will use AGI/AII signaling to set up pseudowires on the MPLS network, but instead of using an AGI value assigned by the MPLS network, the AGI value that is assigned will be taken from the ISID value of the Ethernet frame or from ISIDs registered by the Ethernet network. The AGI message may be given a new type value indicating that the AGI message carries a value that corresponds to the ISID value on an attached Ethernet network. Alternatively, an existing AGI message type may be used to carry the ISID value, and a second type field may be used to indicate that the AGI contains an ISID value.
摘要翻译：为了允许802.1ah服务实例（ISID）和VPLS服务实例之间的无缝互通，用于发信号通知VPLS伪线部分的AGI值可以携带相关的802.1ah服务实例的ISID值。这允许使用相同的值在跨越以太网和VPLS网络的端到端地识别服务实例，而无需修改MPLS网络如何工作。 VPLS网络将使用AGI / AII信令在MPLS网络上建立伪线，而不是使用由MPLS网络分配的AGI值，所分配的AGI值将取自以太网帧的ISID值或从以太网注册的ISID。 AGI消息可以被给予新的类型值，指示AGI消息携带对应于所连接的以太网上的ISID值的值。或者，可以使用现有的AGI消息类型来携带ISID值，并且可以使用第二类型字段来指示AGI包含ISID值。

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