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1. 发明授权

US07957289B2 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：US07957289B2
公开(公告)日：2011-06-07
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： G01R31/08 , H04L12/28
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。

2. 发明申请

US20100166001A1 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：US20100166001A1
公开(公告)日：2010-07-01
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。

3. 发明授权

US08174967B2 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：US08174967B2
公开(公告)日：2012-05-08
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。

4. 发明申请

US20110149979A1 COMMUNICATION NETWORKS THAT PROVIDE A COMMON TRANSPORT DOMAIN FOR USE BY MULTIPLE SERVICE DOMAINS AND METHODS AND COMPUTER PROGRAM PRODUCTS FOR USING THE SAME 失效
标题翻译：通过多种服务领域和方法使用的共同运输域的通信网络和使用该方法的计算机程序产品
公开(公告)号：US20110149979A1
公开(公告)日：2011-06-23
申请号：US12640943
申请日：2009-12-17
申请人： James Uttaro , Richard Todd Harding
发明人： James Uttaro , Richard Todd Harding
IPC分类号： H04L12/56
CPC分类号： H04L45/12 , H04L12/66 , H04L45/04 , H04L45/50 , H04L45/72 , H04L2012/5618
摘要： A method of operating a communication network comprises receiving loopback addresses from a plurality of edge networks at a provider router of a core backbone network, the edge networks and the core backbone network being logically distinct from each other, advertising the loopback addresses to a transport route reflector element, propagating the advertisement of the loopback addresses to other provider routers of the core backbone network using a protocol for communicating between autonomous systems, and using the transport route reflector element to advertise at least one of the loopback addresses to a service route reflector element in one of the plurality of edge networks.
摘要翻译：一种操作通信网络的方法包括从核心骨干网络的提供商路由器处接收来自多个边缘网络的环回地址，边缘网络和核心骨干网络在逻辑上彼此不同，将环回地址广播到传输路由反射器元件，使用用于在自主系统之间通信的协议将所述环回地址的广告传播到所述核心骨干网络的其他提供商路由器，并且使用所述传输路由反射器元件将至少一个所述环回地址通告给服务路由反射器元件在多个边缘网络中的一个中。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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