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11. 发明授权

US07894462B2 Boundary routers providing redistribution and related backbone networks, computer program products, and methods 有权
标题翻译：提供再分配和相关骨干网络的边界路由器，计算机程序产品和方法
公开(公告)号：US07894462B2
公开(公告)日：2011-02-22
申请号：US12344855
申请日：2008-12-29
申请人： James Uttaro , Maria Napierala , Jeewan Ramsaroop , Richard Todd Harding , Hui Tong
发明人： James Uttaro , Maria Napierala , Jeewan Ramsaroop , Richard Todd Harding , Hui Tong
IPC分类号： H04L12/56
CPC分类号： H04L45/02 , H04L45/00 , H04L45/028 , H04L45/04
摘要： A backbone network may include first and second border routers and a route reflector. The first border router may provide data connectivity between the backbone network and a first regional network. The first border router may be configured to receive a notification of a change in status of an edge router of the first regional network, and the notification may be received according to a first routing protocol. The first border router may be further configured to redistribute the notification of the change in status of the edge router from the first routing protocol to a second routing protocol with the first and second routing protocols being different. The second border router may provide data connectivity between the backbone network and a second regional network. The route reflector may be coupled between the first and second border routers, and the route reflector may be configured to transfer the redistributed notification from the first border router to the second border router. Related routers, methods, and computer program products are also discussed.
摘要翻译：骨干网络可以包括第一和第二边界路由器和路由反射器。第一边界路由器可以在骨干网和第一区域网之间提供数据连接。第一边界路由器可以被配置为接收第一区域网络的边缘路由器的状态改变的通知，并且可以根据第一路由协议接收该通知。第一边界路由器可以被进一步配置为将边缘路由器的状态的改变的通知从第一路由协议重新分配到具有不同的第一和第二路由协议的第二路由协议。第二边界路由器可以在骨干网和第二区域网之间提供数据连接。路由反射器可以耦合在第一和第二边界路由器之间，并且路由反射器可以被配置为将重新分发的通知从第一边界路由器传送到第二边界路由器。还讨论了相关的路由器，方法和计算机程序产品。

12. 发明申请

US20100061381A1 Method to reduce IGP routing information 有权
标题翻译：减少IGP路由信息的方法
公开(公告)号：US20100061381A1
公开(公告)日：2010-03-11
申请号：US12283334
申请日：2008-09-11
申请人： Mark Sundt , James Uttaro
发明人： Mark Sundt , James Uttaro
IPC分类号： H04L12/56
CPC分类号： H04L45/24 , H04L45/04 , H04L45/122 , H04L45/50
摘要： A system and method for routing traffic from an ingress provider edge router to an egress provider edge router that eliminates the need to share state information between the ingress provider edge router and a plurality of core routers in a core network. The ingress provider edge router and egress provider edge router are each coupled to at least two core routers among the plurality of core routers in the core network, the ingress provider edge router learning routes with a next hop equal to an IP address of the egress provider edge router through an internal border gateway protocol (iBGP). The ingress provider edge router balances traffic flows on uplinks between the ingress provider edge router and the at least two core routers coupled to the ingress provider edge router without knowledge of network topology in the core network.
摘要翻译：用于将来自入口提供商边缘路由器的流量路由到出口提供商边缘路由器的系统和方法，其消除了在入口提供商边缘路由器和核心网络中的多个核心路由器之间共享状态信息的需要。入口提供商边缘路由器和出口提供商边缘路由器各自耦合到核心网络中的多个核心路由器中的至少两个核心路由器，入口提供商边缘路由器学习路由，下一跳等于出口提供商的IP地址边缘路由器通过内部边界网关协议（iBGP）。入口提供商边缘路由器在入口提供商边缘路由器和耦合到入口提供商边缘路由器的至少两个核心路由器之间的上行链路上平衡流量流，而不了解核心网络中的网络拓扑。

13. 发明申请

US20100061227A1 Method to reduce routing convergence at the edge 有权
标题翻译：减少边缘路由收敛的方法
公开(公告)号：US20100061227A1
公开(公告)日：2010-03-11
申请号：US12286478
申请日：2008-09-30
申请人： Mark Sundt , James Uttaro
发明人： Mark Sundt , James Uttaro
IPC分类号： G06F11/00
CPC分类号： H04L45/22 , H04L45/00 , H04L45/04 , H04L45/28 , H04L45/50
摘要： In a network comprising a provider edge router coupled to each of a mated pair of core routers in a core network, a system and methodology for rerouting upstream traffic destined for the provider edge router in the event of a link failure between one of the core routers and the provider edge router. By detecting a link failure between a first of the mated pair of core routers and the provider edge router, and directing the upstream traffic destined for the provider edge router to a second of the mated pair of core routers, internal gateway protocol (IGP) reconvergence events are not triggered.
摘要翻译：在包括耦合到核心网络中核心路由器的配对对中的每一个的提供商边缘路由器的网络中，在核心路由器之一之间的链路故障的情况下重新路由去往提供商边缘路由器的上行流量的系统和方法和提供商边缘路由器。通过检测核心路由器中的第一对核心路由器与提供商边缘路由器之间的第一个链路故障，并将指定给提供商边缘路由器的上行流量引导到配对核心路由器对中的第二个，内部网关协议（IGP）再聚合事件不被触发。

14. 发明授权

US07583617B2 Method for building virtual private networks using routers 有权
标题翻译：使用路由器构建虚拟专用网的方法
公开(公告)号：US07583617B2
公开(公告)日：2009-09-01
申请号：US11135820
申请日：2005-05-24
申请人： Eric Rosenberg , James Uttaro
发明人： Eric Rosenberg , James Uttaro
IPC分类号： H04L12/28 , H04L12/56 , H04J1/16 , G06F15/173 , G06F15/16
CPC分类号： H04L45/00 , H04L12/4641 , H04L41/145
摘要： A method for forming a communications network using routers. The first step is analyzing a router location to determine if the router location is VPN resource constrained or interface-constrained. The VPN resource constrained router network comprises at least at least two groups of routers and the same number of customer groups. The next step is connecting the first group of customers and routers, and the second group of customers and routers, using a round robin connectivity methodology and saving information in each router's database. The interface-constrained router network, comprises no more routers than the value [Q*], wherein [Q*] represents the number of routers that can be used by a group of customers so that VPN resources will not be exhausted faster than interface resources for the group of routers, then connecting customers to the group of routers using a round robin connectivity methodology and saving information in each router's database.
摘要翻译：一种使用路由器形成通信网络的方法。第一步是分析路由器位置以确定路由器位置是否受VPN资源约束或接口约束。 VPN资源受限路由器网络至少包括两组路由器和相同数量的客户群。下一步是使用循环连接方法连接第一组客户和路由器以及第二组客户和路由器，并在每个路由器的数据库中保存信息。接口受限制的路由器网络不包含比[Q *]值多的路由器，其中[Q *]表示一组客户可以使用的路由器的数量，以便VPN资源不会比接口资源耗尽对于路由器组，然后使用循环连接方法将客户连接到路由器组，并在每个路由器的数据库中保存信息。

15. 发明申请

US20090164835A1 Method and system for survival of data plane through a total control plane failure 失效
标题翻译：数据平面通过总控制平面故障生存的方法和系统
公开(公告)号：US20090164835A1
公开(公告)日：2009-06-25
申请号：US12002873
申请日：2007-12-19
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： G06F11/14 , G06F11/07
CPC分类号： H04L41/0668 , H04L43/0811 , H04L45/02 , H04L45/04 , H04L45/28
摘要： A system and method for retaining routes in a control plane learned by an inter-domain routing protocol in the event of a connectivity failure between routers. Routers are classified as either route reflectors or originators. A determination is made whether the connectivity failure occurred between a route reflector and an originator, two originators, or two route reflectors. A determination is then made whether to propagate a withdrawal of learned routes based on whether the connectivity failure occurred between a route reflector and an originator, two originators, or two route reflectors. A withdrawal of learned routes is propagated to neighboring routers if the connectivity failure occurred between two originators, or between a route reflector and an originator that is inaccessible via an intra-domain routing protocol. No withdrawal of learned routes is propagated if the connectivity failure occurred between two route reflectors, or between a route reflector and an originator that is accessible via an intra-domain routing protocol.
摘要翻译：在路由器之间发生连接故障的情况下，保留由域间路由协议学习的控制平面中的路由的系统和方法。路由器被归类为路由反射器或发起者。确定路由反射器和发起者，两个发起者或两个路由反射器之间是否发生连接故障。然后，基于路由反射器和发起者，两个发起者或两个路由反射器之间是否发生连接故障，确定是否传播学习路由的撤销。如果连接失败发生在两个发起者之间，或路由反射器与通过域内路由协议无法访问的发起者之间，则将学习路由的撤销传播到相邻路由器。如果在两个路由反射器之间发生连接故障，或路由反射器和可通过域内路由协议访问的发起者之间，则不会传播学习路由的撤销。

16. 发明授权

US07257119B2 MPLS virtual private network using dual network cores 失效
标题翻译： MPLS虚拟专网使用双网络核心
公开(公告)号：US07257119B2
公开(公告)日：2007-08-14
申请号：US10328060
申请日：2002-12-23
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： H04L12/28
CPC分类号： H04L45/50 , H04L45/00 , H04L45/22
摘要： A multi-protocol label switching system using multiple cores. In establishing a virtual private network in a MPLS system, more than one core is available. Paths are established over each core separately and weights are assigned to the two routes. Thus, the route which is preferred by manually configuring in advance will be chosen.
摘要翻译：一种使用多核的多协议标签交换系统。在MPLS系统中建立虚拟专用网络时，有多个核心可用。分别在每个核心上建立路径，并将权重分配给两条路线。因此，将选择通过预先手动配置而优选的路线。

17. 发明申请

US20060083215A1 Method and apparatus for providing a scalable route reflector topology for networks 审中-公开
标题翻译：为网络提供可扩展路由反射器拓扑的方法和装置
公开(公告)号：US20060083215A1
公开(公告)日：2006-04-20
申请号：US10968299
申请日：2004-10-19
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： H04L12/28
CPC分类号： H04L12/4645 , H04L45/02
摘要： Method and apparatus for implementing a route reflector topology that comprises a plurality of sets of route reflectors. Each set of route reflectors establishes a peering relationship with all PEs (Provider Edges), e.g., Provider Edge Routers in the network. In one embodiment, each PER designates one set of route reflectors to propagate said PE's private routes, e.g., VPNv4 routes, to other PEs in the network. This designated set of route reflectors is responsible for both advertising locally originated routes from this PE to all other PEs and advertisement of routes from other PEs to this PE. Using this unique route reflector topology, new sets of route reflectors and PEs can be easily added into the network seamlessly.
摘要翻译：用于实现包括多组路由反射器的路由反射器拓扑的方法和装置。每组路由反射器与所有PE（提供商边缘）建立对等关系，例如网络中的提供商边缘路由器。在一个实施例中，每个PER指定一组路由反射器，以将所述PE的私有路由（例如，VPNv4路由）传播到网络中的其他PE。这个指定的路由反射器集合负责从本PE到所有其他PE的本地发起的路由，以及从其他PE到该PE的路由的广告。使用这种独特的路由反射器拓扑，可以无缝地将新的路由反射器和PE集合轻松添加到网络中。

18. 发明授权

US08611357B2 MPLS virtual private network using multiple network cores 有权
标题翻译： MPLS虚拟专用网使用多个网络核心
公开(公告)号：US08611357B2
公开(公告)日：2013-12-17
申请号：US13569933
申请日：2012-08-08
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： H04L12/28
CPC分类号： H04L45/50 , H04L45/00 , H04L45/22
摘要： Examples of multi-protocol label switching networking using multiple network cores are disclosed. Example methods disclosed herein to route data in a multi-protocol label switching network include providing an incoming data packet in parallel to a plurality of network cores of the multi-protocol label switching network to cause a respective plurality of alternative paths in the plurality of network cores to be determined for routing the incoming data packet, each alternative path being associated with a respective network core, each network core including a respective plurality of routers, obtaining a plurality of weights associated with the plurality of alternative paths, and selecting, based on the plurality of weights, a first alternative path in a first network core to route the incoming data packet in the multi-protocol label switching network, the first alternative path being selected from among the respective plurality of alternative paths in the plurality of network cores.
摘要翻译：公开了使用多个网络核心的多协议标签交换组网的示例。本文公开的在多协议标签交换网络中路由数据的方法包括：提供与多协议标签交换网络的多个网络核心并行的输入数据分组，以在多个网络中引起相应的多个替代路径确定用于路由输入数据分组的核心，每个备选路径与相应的网络核心相关联，每个网络核心包括相应的多个路由器，获得与多个替代路径相关联的多个权重，并且基于多个权重，第一网络核心中的第一替代路径，用于路由多协议标签交换网络中的输入数据分组，第一替代路径是从多个网络核心中的相应多个备选路径中选择的。

19. 发明授权

US08542612B1 Method and apparatus for providing a wide area network infrastructure 有权
标题翻译：用于提供广域网基础设施的方法和装置
公开(公告)号：US08542612B1
公开(公告)日：2013-09-24
申请号：US11319956
申请日：2005-12-28
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： H04J1/16 , H04L12/28
CPC分类号： H04L29/06183 , H04L12/2856 , H04L12/462 , H04L45/02
摘要： A method and apparatus for providing a wide area network infrastructure for providing services on IP networks such as Voice over Internet Protocol (VoIP) and Service over Internet Protocol (SoIP) networks are disclosed. For example, an enterprise customer may subscribe to a service for obtaining a reliable wide area network infrastructure for communicating among two or more customer locations. The network service provider creates a virtual private network in the public domain and another virtual private network in the private domain to interconnect the customer locations. It then connects each customer edge router to two provider edge routers one in each domain and/or instances of provider edge functionality in each domain. Routes are then advertised via two control planes to both virtual private networks.
摘要翻译：公开了一种用于提供广域网基础设施的方法和装置，用于在诸如因特网协议语音（VoIP）和因特网协议（SoIP）网络之类的IP网络上提供服务。例如，企业客户可以订阅服务以获得用于在两个或多个客户位置之间通信的可靠的广域网基础设施。网络服务提供商在公共领域创建虚拟专用网络，并在私有域中创建另一个虚拟专用网络，以便互连客户位置。然后它将每个客户边缘路由器连接到每个域中的每个域和/或每个域中的提供商边缘功能的实例之间的两个提供商边缘路由器。然后，路由通过两个控制平面发布到两个虚拟专用网络。

20. 发明授权

US08396988B2 Method and system for survival of data plane through a total control plane failure 失效
标题翻译：数据平面通过总控制平面故障生存的方法和系统
公开(公告)号：US08396988B2
公开(公告)日：2013-03-12
申请号：US12002873
申请日：2007-12-19
申请人： James Uttaro
发明人： James Uttaro
IPC分类号： G06F11/14
CPC分类号： H04L41/0668 , H04L43/0811 , H04L45/02 , H04L45/04 , H04L45/28
摘要： A system and method for retaining routes in a control plane learned by an inter-domain routing protocol in the event of a connectivity failure between routers. Routers are classified as either route reflectors or originators. A connectivity failure between two routers is determined. A determination is then made whether to propagate a withdrawal of learned routes based on whether the connectivity failure occurred between a route reflector and an originator, two originators, or two route reflectors. A withdrawal of learned routes is propagated to neighboring routers if the connectivity failure occurred between two originators, or between a route reflector and an originator that is inaccessible via an intra-domain routing protocol. No withdrawal of learned routes is propagated if the connectivity failure occurred between two route reflectors, or between a route reflector and an originator that is accessible via an intra-domain routing protocol.
摘要翻译：在路由器之间发生连接故障的情况下，保留由域间路由协议学习的控制平面中的路由的系统和方法。路由器被归类为路由反射器或发起者。确定两个路由器之间的连接故障。然后，基于路由反射器和发起者，两个发起者或两个路由反射器之间是否发生连接故障，确定是否传播学习路由的撤销。如果连接失败发生在两个发起者之间，或路由反射器与通过域内路由协议无法访问的发起者之间，则将学习路由的撤销传播到相邻路由器。如果在两个路由反射器之间发生连接故障，或路由反射器和可通过域内路由协议访问的发起者之间，则不会传播学习路由的撤销。

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