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1.发明授权Using a link attribute to inform nodes of the availability of traffic management resources 有权使用链接属性通知节点的流量管理资源的可用性公开(公告)号：US07768924B2
公开(公告)日：2010-08-03
申请号：US11863461
申请日：2007-09-28
申请人： Ronald P. Folkes , Calvin Wan , Chenjiang Hu
发明人： Ronald P. Folkes , Calvin Wan , Chenjiang Hu
IPC分类号： H04L12/26
摘要： In one embodiment, informing nodes of traffic management resource availability includes establishing whether there is an available traffic management resource at a first node, where a traffic management resource tracks usage of bandwidth by a tunnel at the first node. Whether there is an available traffic management resource is recorded in a traffic management link attribute. The traffic management link attribute is sent to second nodes to inform the second nodes of whether there is an available traffic management resource at the first node.
摘要翻译： 在一个实施例中，通知节点的流量管理资源可用性包括确定在第一节点处是否存在可用的流量管理资源，其中流量管理资源跟踪第一节点处的隧道的带宽利用率。 流量管理链路属性中是否记录有可用的流量管理资源。 将流量管理链路属性发送给第二节点，以通知第二节点在第一节点是否有可用的流量管理资源。
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公开(公告)号：US20090086621A1
公开(公告)日：2009-04-02
申请号：US11863374
申请日：2007-09-28
申请人： Calvin Wan , Ronald P. Folkes , Nimer I. Yaseen , Chenjiang Hu
发明人： Calvin Wan , Ronald P. Folkes , Nimer I. Yaseen , Chenjiang Hu
IPC分类号： G08C15/00
摘要： In one embodiment, correlating label switched paths of a pseudowire includes receiving a first message at a second label switching router. The first message is sent from a first label switching router and includes a pseudowire identifier and a first label switched path identifier. The pseudowire identifier identifies a pseudowire, and the first label switched path identifier identifies a first label switched path that implements the pseudowire. A second message is sent from the second label switching router to the first label switching router. The second message comprises the pseudowire identifier and a second label switched path identifier. The second label switched path identifier identifies a second label switched path that implements the pseudowire.
摘要翻译： 在一个实施例中，将伪线的标签交换路径相关联包括在第二标签交换路由器处接收第一消息。 第一消息是从第一标签交换路由器发送的，并且包括伪线标识符和第一标签交换路径标识符。 伪线标识符识别伪线，并且第一标签交换路径标识符标识实现伪线的第一标签交换路径。 从第二标签交换路由器向第一标签交换路由器发送第二条消息。 第二消息包括伪线标识符和第二标签交换路径标识符。 第二标签交换路径标识符标识实现伪线的第二标签交换路径。
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3.发明申请Using A Link-State Advertisement To Inform Nodes Of The Availability Of Traffic Management Resources 审中-公开使用链路状态广告来通知节点的流量管理资源的可用性公开(公告)号：US20090086633A1
公开(公告)日：2009-04-02
申请号：US11865771
申请日：2007-10-02
申请人： Chenjiang Hu , Calvin Wan , Ronald P. Folkes
发明人： Chenjiang Hu , Calvin Wan , Ronald P. Folkes
IPC分类号： H04L12/66
CPC分类号： H04L12/66
摘要： In one embodiment, informing nodes of traffic management resource availability includes determining a number of available traffic management resources at a first node, where a traffic management resource tracks usage of bandwidth by a tunnel at the first node. The number of available traffic management resources is recorded in a link-state advertisement. The link-state advertisement is sent to one or more second nodes.
摘要翻译： 在一个实施例中，通知节点的流量管理资源可用性包括确定在第一节点处的可用流量管理资源的数量，其中流量管理资源跟踪第一节点处的隧道的带宽利用率。 可用流量管理资源的数量记录在链路状态广告中。 链路状态广告被发送到一个或多个第二节点。
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4.发明申请Using A Link Attribute To Inform Nodes Of The Availability Of Traffic Management Resources 有权使用链接属性通知节点的流量管理资源的可用性公开(公告)号：US20090086632A1
公开(公告)日：2009-04-02
申请号：US11863461
申请日：2007-09-28
申请人： Ronald P. Folkes , Calvin Wan , Chenjiang Hu
发明人： Ronald P. Folkes , Calvin Wan , Chenjiang Hu
IPC分类号： H04L12/56
摘要： In one embodiment, informing nodes of traffic management resource availability includes establishing whether there is an available traffic management resource at a first node, where a traffic management resource tracks usage of bandwidth by a tunnel at the first node. Whether there is an available traffic management resource is recorded in a traffic management link attribute. The traffic management link attribute is sent to second nodes to inform the second nodes of whether there is an available traffic management resource at the first node.
摘要翻译： 在一个实施例中，通知节点的流量管理资源可用性包括确定在第一节点处是否存在可用的流量管理资源，其中流量管理资源跟踪第一节点处的隧道的带宽利用率。 流量管理链路属性中是否记录有可用的流量管理资源。 将流量管理链路属性发送给第二节点，以通知第二节点在第一节点是否有可用的流量管理资源。
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公开(公告)号：US20090052445A1
公开(公告)日：2009-02-26
申请号：US11844771
申请日：2007-08-24
申请人： Ronald P. Folkes
发明人： Ronald P. Folkes
CPC分类号： H04L45/54 , H04L45/02 , H04L45/021 , H04L45/64
摘要： In accordance with the teachings of the present invention, a system and method for synchronizing packet forwarding information is provided. In a particular embodiment, the system includes a control processor configured to implement a control plane to generate first forwarding information and transfer the first forwarding information to an active forwarding table of a network processor. The system also includes a network processor configured to implement a forwarding plane to receive packets and use the first forwarding information in the active forwarding table to forward the received packets to one or more network devices. After the control plane is restarted, the control processor is further configured to use the restarted control plane to generate second forwarding information and incrementally update the first forwarding information in the active forwarding table with the second forwarding information while the network processor's forwarding plane continues to forward traffic.
摘要翻译： 根据本发明的教导，提供了一种用于同步分组转发信息的系统和方法。 在特定实施例中，系统包括控制处理器，其被配置为实现控制平面以产生第一转发信息并将第一转发信息传送到网络处理器的活动转发表。 该系统还包括网络处理器，被配置为实现转发平面以接收分组，并且使用活动转发表中的第一转发信息将所接收的分组转发到一个或多个网络设备。 在重新启动控制平面之后，控制处理器进一步被配置为使用重新启动的控制平面来产生第二转发信息，并且在网络处理器的转发平面继续向前转发时，利用第二转发信息递增地更新主动转发表中的第一转发信息 交通。
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公开(公告)号：US07269133B2
公开(公告)日：2007-09-11
申请号：US10233704
申请日：2002-09-03
申请人： Xiaomei Lu , Ronald P. Folkes , Lance A. Visser
发明人： Xiaomei Lu , Ronald P. Folkes , Lance A. Visser
CPC分类号： H04L45/00 , H04L45/245 , H04L45/28 , H04L45/56 , H04L45/60
摘要： The HA IS-IS system provides a redundant backup IS-IS protocol instance that can seamlessly assume the function of the active IS-IS instance in the event of active MCP failure. Once the backup is online, the active synchronizes its global, interface, adjacency, neighbor, and LSP system state information. In the ongoing synchronization phase, the active and the backup maintain synchronization using a combination of explicit message updates from active to backup together with message flow-through. In the recovery phase, the operating system detects the failure of the active and notifies the backup, which assumes the active function as a standalone system without reconfiguring or interrupting traffic among peer network routers, and starts computing forwarding tables and updating routing tables.
摘要翻译： HA IS-IS系统提供冗余备份IS-IS协议实例，可以在发生主动MCP故障的情况下无缝地承担活动IS-IS实例的功能。 备份在线后，主动同步其全局，接口，邻接，邻居和LSP系统状态信息。 在正在进行的同步阶段，活动和备份使用从活动到备用的显式消息更新与消息流通的组合来保持同步。 在恢复阶段，操作系统检测到活动的故障，并通知备份，该备份将主动功能视为独立系统，而不会在对等网络路由器之间重新配置或中断流量，并启动计算转发表和更新路由表。
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公开(公告)号：US07903665B2
公开(公告)日：2011-03-08
申请号：US11844771
申请日：2007-08-24
申请人： Ronald P. Folkes
发明人： Ronald P. Folkes
IPC分类号： H04B7/212
CPC分类号： H04L45/54 , H04L45/02 , H04L45/021 , H04L45/64
摘要： A system for synchronizing packet forwarding information includes a control processor configured to implement a control plane to generate first forwarding information and transfer the first forwarding information to an active forwarding table of a network processor. The system also includes a network processor configured to implement a forwarding plane to receive packets and use the first forwarding information in the active forwarding table to forward the received packets to one or more network devices. After the control plane is restarted, the control processor is further configured to use the restarted control plane to generate second forwarding information and incrementally update the first forwarding information in the active forwarding table with the second forwarding information while the network processor's forwarding plane continues to forward traffic.
摘要翻译： 用于同步分组转发信息的系统包括：控制处理器，被配置为实现控制平面以产生第一转发信息，并将第一转发信息传送到网络处理器的活动转发表。 该系统还包括网络处理器，被配置为实现转发平面以接收分组，并且使用活动转发表中的第一转发信息将所接收的分组转发到一个或多个网络设备。 在重新启动控制平面之后，控制处理器进一步被配置为使用重新启动的控制平面来产生第二转发信息，并且在网络处理器的转发平面继续向前转发时，利用第二转发信息递增地更新主动转发表中的第一转发信息 交通。
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公开(公告)号：US07292535B2
公开(公告)日：2007-11-06
申请号：US10153500
申请日：2002-05-23
IPC分类号： H04L1/00
CPC分类号： H04L45/28 , H04L45/02 , H04L45/586 , H04L45/60
摘要： In highly-available Open Shortest Path First (OSPF) routing in a network, the dynamic state of a backup OSPF instance in a router is synchronized with the dynamic state of an active OSPF instance using explicit message transmission from the active instance to the backup instance. After this, the dynamic state synchronization of the backup OSPF instance is maintained using a combination of explicit message updates from the active OSPF instance together with a message flow-through mechanism. In the event of fail-over of the active OSPF instance, then the router recovers seamlessly without reconfiguring or interrupting traffic among peer routers in the network, by functionally substituting the synchronized backup OSPF instance for the active OSPF instance, such that the backup OSPF instance establishes itself as the new active OSPF instance.
摘要翻译： 在网络中高度可用的开放最短路径优先（OSPF）路由中，路由器中的备份OSPF实例的动态状态与活动OSPF实例的动态状态同步，使用从活动实例到备份实例的显式消息传输 。 此后，使用来自活动OSPF实例的显式消息更新与消息流通机制的组合来维护备份OSPF实例的动态状态同步。 在活动OSPF实例故障切换的情况下，路由器在网络中的对等路由器之间无需重新配置或中断流量，通过功能替代活动OSPF实例的同步备份OSPF实例，可以无缝恢复，从而备份OSPF实例 建立自己作为新的活动OSPF实例。
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9.发明授权Protocol communication and transit packet forwarding routed between multiple virtual routers within a single physical router 失效在单个物理路由器内的多个虚拟路由器之间路由协议通信和传输分组转发公开(公告)号：US07209976B2
公开(公告)日：2007-04-24
申请号：US10196393
申请日：2002-07-16
申请人： Ronald P. Folkes , Lance A. Visser
发明人： Ronald P. Folkes , Lance A. Visser
IPC分类号： G06F15/173
CPC分类号： H04L45/586 , H04L45/00 , H04L45/40 , H04L45/54 , H04L45/7457
摘要： Virtual routers within a single physical router share a centralized data plane containing a centralized switch fabric and a plurality of physical network interfaces, each assigned to only one virtual router. Using a logical cut-through device between a pair of virtual routers designated respectively client and server, packet forwarding information from the server is imported into the client, which creates, allocates, and maintains a data structure for the imported information, which then resides on the client interfaces. This imported forwarding information is then integrated into a single forwarding table that is used to recognize an incoming packet at the client and forward it appropriately out through a server interface with a single packet forwarding decision in a single transit through the switch fabric. Within a physical router, a client virtual router can communicate with multiple servers and can concurrently function as a server to multiple clients.
摘要翻译： 单个物理路由器中的虚拟路由器共享包含集中式交换结构和多个物理网络接口的集中式数据平面，每个物理网络接口仅分配给一个虚拟路由器。 在分配给客户端和服务器的一对虚拟路由器之间使用逻辑切换设备，来自服务器的数据包转发信息被导入到客户端，客户端创建，分配和维护导入信息的数据结构， 客户端接口。 然后，将此导入的转发信息集成到单个转发表中，该转发表用于在客户端识别传入的数据包，并通过交换结构在单个传输中通过单个数据包转发决定通过服务器接口正确转发。 在物理路由器中，客户端虚拟路由器可以与多个服务器进行通信，并可以同时作为多个客户端的服务器。
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