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1. 发明授权

US09722861B2 Fault-resilient broadcast, multicast, and unicast services 有权
公开(公告)号：US09722861B2
公开(公告)日：2017-08-01
申请号：US14143120
申请日：2013-12-30
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： H04L12/28 , H04L12/24
CPC分类号： H04L41/0659 , H04L41/0663 , H04L41/0668 , H04L41/12
摘要： In general, various capabilities related to fault-resilient services within communication networks are presented. The services may include broadcast services, multicast services, unicast services, or the like, as well as various combinations thereof. A capability for providing local protection to unicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for providing local protection to multicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees includes partitioning a graph into a pair of partitions based on a link coloring mechanism and constructing the pair of redundant trees based on the pair of partitions.

2. 发明授权

US09350641B2 IP fast reroute scheme offering full protection 有权
标题翻译： IP快速重路由方案提供全面保护
公开(公告)号：US09350641B2
公开(公告)日：2016-05-24
申请号：US13436098
申请日：2012-03-30
申请人： Yigal Bejerano , Spyridon Antonakopoulos , Pramod V. Koppol
发明人： Yigal Bejerano , Spyridon Antonakopoulos , Pramod V. Koppol
IPC分类号： H04L12/26 , H04L12/733 , H04L12/751 , H04L12/705 , H04L12/707 , H04L12/703 , H04L12/753
CPC分类号： H04L45/122 , H04L45/02 , H04L45/18 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/48
摘要： An IP fast reroute scheme offering full protection is disclosed for reducing the number of address lookups associated with a message packet. The IP fast reroute scheme offering full protection includes a router configured to forward the arriving packet to a next-hop neighbor node according to one of a first pointer and a second pointer associated to a destination node in a forwarding information table stored in a forwarding information memory storage; the first pointer is directed to a first next-hop neighbor node which is on the shortest path from the network node to the destination node; and the second pointer is directed to a second next-hop neighbor node different from the first next-hop neighbor node, the second next-hop neighbor node on a candidate cycle containing both the network node and the destination node having the greatest overlap with a sink tree rooted at the destination node. The IP fast reroute scheme offering full protection is particularly useful for providing full protection against single link and node failures with a simple method requiring no packet modifications.
摘要翻译：公开了提供完全保护的IP快速重路由方案，用于减少与消息分组相关联的地址查找的数量。提供完全保护的IP快速重路由方案包括：路由器，被配置为根据存储在转发信息中的转发信息表中的根据与目的地节点相关联的第一指针和第二指针之一将到达的分组转发到下一跳邻居节点内存存储; 第一指针被定向到从网络节点到目的地节点的最短路径上的第一下一跳邻居节点; 并且第二指针被引导到不同于第一下一跳邻居节点的第二下一跳邻居节点，在候选周期上的第二下一跳邻居节点包含网络节点和与a的最大重叠的目的地节点宿树根植于目的地节点。提供完全保护的IP快速重路由方案对于通过简单的方法不需要任何数据包修改来提供对单链路和节点故障的全面保护特别有用。

3. 发明授权

US08243585B2 Method and apparatus for fault-resilient multicast using multiple sources 有权
标题翻译：使用多个源的故障弹性组播的方法和装置
公开(公告)号：US08243585B2
公开(公告)日：2012-08-14
申请号：US12546762
申请日：2009-08-25
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： G01R31/08
CPC分类号： H04L45/22 , H04L12/1877 , H04L45/16 , H04L45/28
摘要： A capability is provided for supporting fault-resilient multicast using multiple sources. A method for supporting fault-resilient propagation of multicast traffic using Redundant Multicast Trees (RMTs) includes identifying each potential Shared Risk Link Group (SRLG) conflict associated with a pair of RMTs providing node-disjoint paths to a plurality of destination nodes, identifying each potential SRLG conflict that is an actual SRLG conflict, and, for each actual SRLG conflict, determining a detour path for protecting the links of the actual SRLG conflict. The pair of RMTs includes a first RMT from a first multicast source node to each of the destination nodes and a second RMT from a second multicast source node to each of the destination nodes. Each potential SRLG conflict includes a plurality of links. A potential SRLG conflict is determined to be an actual SRLG conflict if first and second paths for one of the destination nodes over the respective first and second RMTs each traverse at least one link of the potential SRLG conflict.
摘要翻译：提供了一种支持使用多个源的故障回复组播的能力。用于支持使用冗余多播树（RMT）的组播流量的故障恢复传播的方法包括识别与向多个目的地节点提供节点不相交路径的一对RMT相关联的每个潜在共享风险链路组（SRLG）冲突，识别每个潜在的SRLG冲突是实际的SRLG冲突，并且对于每个实际的SRLG冲突，确定用于保护实际SRLG冲突的链接的迂回路径。所述一对RMT包括从第一组播源节点到每个目的节点的第一RMT以及从第二组播源节点到每个目的节点的第二RMT。每个潜在的SRLG冲突包括多个链接。如果相应的第一和第二RMT之间的目的地节点之一的第一和第二路径遍历潜在的SRLG冲突的至少一个链路，则潜在的SRLG冲突被确定为实际的SRLG冲突。

4. 发明申请

US20110051726A1 METHOD AND APPARATUS FOR FAULT-RESILIENT MULTICAST USING MULTIPLE SOURCES 有权
标题翻译：使用多个源的故障复原多项式的方法和装置
公开(公告)号：US20110051726A1
公开(公告)日：2011-03-03
申请号：US12546762
申请日：2009-08-25
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： H04L12/56
CPC分类号： H04L45/22 , H04L12/1877 , H04L45/16 , H04L45/28
摘要： A capability is provided for supporting fault-resilient multicast using multiple sources. A method for supporting fault-resilient propagation of multicast traffic using Redundant Multicast Trees (RMTs) includes identifying each potential Shared Risk Link Group (SRLG) conflict associated with a pair of RMTs providing node-disjoint paths to a plurality of destination nodes, identifying each potential SRLG conflict that is an actual SRLG conflict, and, for each actual SRLG conflict, determining a detour path for protecting the links of the actual SRLG conflict. The pair of RMTs includes a first RMT from a first multicast source node to each of the destination nodes and a second RMT from a second multicast source node to each of the destination nodes. Each potential SRLG conflict includes a plurality of links. A potential SRLG conflict is determined to be an actual SRLG conflict if first and second paths for one of the destination nodes over the respective first and second RMTs each traverse at least one link of the potential SRLG conflict.
摘要翻译：提供了一种支持使用多个源的故障回复组播的能力。用于支持使用冗余多播树（RMT）的组播流量的故障恢复传播的方法包括识别与向多个目的地节点提供节点不相交路径的一对RMT相关联的每个潜在共享风险链路组（SRLG）冲突，识别每个潜在的SRLG冲突是实际的SRLG冲突，并且对于每个实际的SRLG冲突，确定用于保护实际SRLG冲突的链接的迂回路径。所述一对RMT包括从第一组播源节点到每个目的节点的第一RMT以及从第二组播源节点到每个目的节点的第二RMT。每个潜在的SRLG冲突包括多个链接。如果相应的第一和第二RMT之间的目的地节点之一的第一和第二路径遍历潜在的SRLG冲突的至少一个链路，则潜在的SRLG冲突被确定为实际的SRLG冲突。

5. 发明申请

US20150009807A1 FAULT-RESILIENT BROADCAST, MULTICAST, AND UNICAST SERVICES 有权
标题翻译：故障恢复广播，多媒体和UNICAST服务
公开(公告)号：US20150009807A1
公开(公告)日：2015-01-08
申请号：US14143120
申请日：2013-12-30
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： H04L12/24
CPC分类号： H04L41/0659 , H04L41/0663 , H04L41/0668 , H04L41/12
摘要： In general, various capabilities related to fault-resilient services within communication networks are presented. The services may include broadcast services, multicast services, unicast services, or the like, as well as various combinations thereof. A capability for providing local protection to unicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for providing local protection to multicast traffic at a node associated with a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees is presented herein. A capability for constructing a pair of redundant trees includes partitioning a graph into a pair of partitions based on a link coloring mechanism and constructing the pair of redundant trees based on the pair of partitions.
摘要翻译：通常，提出了与通信网络内的故障恢复服务相关的各种功能。服务可以包括广播服务，组播服务，单播服务等，以及其各种组合。本文提供了在与一对冗余树相关联的节点处为单播业务提供本地保护的能力。本文提供了在与一对冗余树相关联的节点处向多播业务提供本地保护的能力。本文介绍了构建一对冗余树的能力。构建一对冗余树的能力包括基于链路着色机制将图划分成一对分区，并且基于一对分区构建一对冗余树。

6. 发明授权

US08509232B2 Method and apparatus for fault-resilient multicast and unicast in transport networks 有权
标题翻译：传输网中故障弹性组播和单播的方法和装置
公开(公告)号：US08509232B2
公开(公告)日：2013-08-13
申请号：US12426453
申请日：2009-04-20
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L12/1877 , H04L45/1287 , H04L45/16 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/48 , H04L45/66
摘要： A capability is provided for supporting fault-resilient propagation of traffic in networks using redundant multicast trees (RMTs). Fault-resilient propagation of traffic from a first node to a second node is supported using one or both of a pair of RMTs rooted at the first node and a pair of RMTs rooted at the second node. The pair of RMTs rooted at the first node includes a pair of node-disjoint paths from the first node to the second node. The pair of RMTs rooted at the second node includes a pair of node-disjoint paths from the second node to the first node. The first node propagates multicast traffic toward the second node using at least one of the RMTs in the pair of RMTs rooted at the first node. The first node propagates unicast traffic toward the second node using at least one of: at least one of the RMTs in the pair of RMTs rooted at the first node, or at least one of the RMTs in the pair of RMTs rooted at the second node.
摘要翻译：提供了一种能力，用于支持使用冗余组播树（RMT）的网络中业务的故障恢复传播。使用根据第一节点的一对RMT中的一个或两个，以及以第二节点为根的一对RMT，来支持业务从第一节点到第二节点的故障恢复传播。根据第一节点的一对RMT包括从第一节点到第二节点的一对节点不相交路径。植根于第二节点的一对RMT包括从第二节点到第一节点的一对节点不相交路径。第一节点使用根据第一节点的RMT对中的至少一个RMT向第二节点传播多播业务。所述第一节点使用以下至少之一传播单播业务：第一节点中的至少一个RMT中的至少一个，或者基于第二节点的RMT对中的RMT中的至少一个RMT 。

7. 发明申请

US20130107698A1 IP FAST REROUTE SCHEME OFFERING FULL PROTECTION 有权
标题翻译： IP快速REROUTE方案提供全面保护
公开(公告)号：US20130107698A1
公开(公告)日：2013-05-02
申请号：US13436098
申请日：2012-03-30
申请人： Yigal BEJERANO , Spyridon Antonakopoulos , Pramod V. Koppol
发明人： Yigal BEJERANO , Spyridon Antonakopoulos , Pramod V. Koppol
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L45/122 , H04L45/02 , H04L45/18 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/48
摘要： An IP fast reroute scheme offering full protection is disclosed for reducing the number of address lookups associated with a message packet. The IP fast reroute scheme offering full protection includes a router configured to forward the arriving packet to a next-hop neighbor node according to one of a first pointer and a second pointer associated to a destination node in a forwarding information table stored in a forwarding information memory storage; the first pointer is directed to a first next-hop neighbor node which is on the shortest path from the network node to the destination node; and the second pointer is directed to a second next-hop neighbor node different from the first next-hop neighbor node, the second next-hop neighbor node on a candidate cycle containing both the network node and the destination node having the greatest overlap with a sink tree rooted at the destination node. The IP fast reroute scheme offering full protection is particularly useful for providing full protection against single link and node failures with a simple method requiring no packet modifications.
摘要翻译：公开了提供完全保护的IP快速重路由方案，用于减少与消息分组相关联的地址查找的数量。提供完全保护的IP快速重路由方案包括：路由器，被配置为根据存储在转发信息中的转发信息表中的根据与目的地节点相关联的第一指针和第二指针之一将到达的分组转发到下一跳邻居节点内存存储; 第一指针被定向到从网络节点到目的地节点的最短路径上的第一下一跳邻居节点; 并且第二指针被引导到不同于第一下一跳邻居节点的第二下一跳邻居节点，在候选周期上的第二下一跳邻居节点包含网络节点和与a的最大重叠的目的地节点宿树根植于目的地节点。提供完全保护的IP快速重路由方案对于通过简单的方法不需要任何数据包修改来提供对单链路和节点故障的全面保护特别有用。

8. 发明申请

US20100265945A1 METHOD AND APPARATUS FOR FAULT-RESILIENT MULTICAST AND UNICAST IN TRANSPORT NETWORKS 有权
标题翻译：交通运输网络中故障复原和异常的方法与装置
公开(公告)号：US20100265945A1
公开(公告)日：2010-10-21
申请号：US12426453
申请日：2009-04-20
申请人： Yigal Bejerano , Pramod V. Koppol
发明人： Yigal Bejerano , Pramod V. Koppol
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L45/00 , H04L12/1877 , H04L45/1287 , H04L45/16 , H04L45/22 , H04L45/24 , H04L45/28 , H04L45/48 , H04L45/66
摘要： A capability is provided for supporting fault-resilient propagation of traffic in networks using redundant multicast trees (RMTs). Fault-resilient propagation of traffic from a first node to a second node is supported using one or both of a pair of RMTs rooted at the first node and a pair of RMTs rooted at the second node. The pair of RMTs rooted at the first node includes a pair of node-disjoint paths from the first node to the second node. The pair of RMTs rooted at the second node includes a pair of node-disjoint paths from the second node to the first node. The first node propagates multicast traffic toward the second node using at least one of the RMTs in the pair of RMTs rooted at the first node. The first node propagates unicast traffic toward the second node using at least one of: at least one of the RMTs in the pair of RMTs rooted at the first node, or at least one of the RMTs in the pair of RMTs rooted at the second node.
摘要翻译：提供了一种能力，用于支持使用冗余组播树（RMT）的网络中业务的故障恢复传播。使用根据第一节点的一对RMT中的一个或两个，以及以第二节点为根的一对RMT，来支持业务从第一节点到第二节点的故障恢复传播。根据第一节点的一对RMT包括从第一节点到第二节点的一对节点不相交路径。植根于第二节点的一对RMT包括从第二节点到第一节点的一对节点不相交路径。第一节点使用根据第一节点的RMT对中的至少一个RMT向第二节点传播多播业务。所述第一节点使用以下至少之一传播单播业务：第一节点中的至少一个RMT中的至少一个，或者基于第二节点的RMT对中的RMT中的至少一个RMT 。

9. 发明申请

US20130305344A1 ENTERPRISE NETWORK SERVICES OVER DISTRIBUTED CLOUDS 审中-公开
标题翻译：分布式云端的企业网络服务
公开(公告)号：US20130305344A1
公开(公告)日：2013-11-14
申请号：US13471062
申请日：2012-05-14
申请人： Mansoor Alicherry , Pramod V. Koppol
发明人： Mansoor Alicherry , Pramod V. Koppol
IPC分类号： G06F21/00 , G06F15/16
CPC分类号： H04L63/0272 , H04L63/0227
摘要： Various exemplary embodiments relate to a method and related network node including one or more of the following: determining that a new virtual gateway location should be created; selecting a data center of a plurality of data centers to host the new virtual gateway location; and establishing a virtual gateway at the selected data center, wherein the virtual gateway is configured to provide at least one device with connectivity to a Virtual Private Network (VPN) and connectivity to the Internet.
摘要翻译：各种示例性实施例涉及包括以下中的一个或多个的方法和相关网络节点：确定应当创建新的虚拟网关位置; 选择多个数据中心的数据中心来托管新的虚拟网关位置; 以及在所选择的数据中心处建立虚拟网关，其中所述虚拟网关被配置为向至少一个设备提供与虚拟专用网（VPN）的连接以及到因特网的连接。

10. 发明授权

US07280534B2 Managed IP routing services for L2 overlay IP virtual private network (VPN) services 有权
标题翻译：用于L2覆盖IP虚拟专用网（VPN）服务的管理IP路由服务
公开(公告)号：US07280534B2
公开(公告)日：2007-10-09
申请号：US10717151
申请日：2003-11-19
申请人： Pramod V. Koppol
发明人： Pramod V. Koppol
IPC分类号： H04L12/66 , H04L12/28
CPC分类号： H04L63/0272 , H04L12/4641 , H04L29/12009 , H04L29/12018 , H04L61/10 , H04Q2213/13353 , H04Q2213/13384 , H04Q2213/13389 , H04Q2213/13399
摘要： A method and apparatus for providing IP-VPN services for customers and service providers utilizing layer-2 point-to-point connectivity. The method and apparatus include exchanging unique loop-back addresses of customer edges (CE) between the CEs via a respective data virtual circuit therebetween, and sending IP addresses of customer networks associated with each CE to an associated IP service controller (IPSC). The associated IPSC broadcasts the IP addresses of the associated customer networks to other IPSCs, and each CE sends to an associated IPSC, a list of received loop-back addresses. Each IPSC then sends to an associated CE, customer network addresses received from other IPSCs, and each CE populates a local routing table with information mapping the customer networks with a data virtual circuit.
摘要翻译：一种用于为客户和服务提供商利用第二层点对点连接提供IP-VPN服务的方法和装置。该方法和装置包括经由CE之间的相应数据虚拟电路交换CE之间的客户边缘（CE）的唯一环回地址，并将与每个CE相关联的客户网络的IP地址发送到相关联的IP服务控制器（IPSC）。相关联的IPSC将相关联的客户网络的IP地址广播到其他IPSC，并且每个CE向相关联的IPSC发送接收到的环回地址的列表。然后，每个IPSC向相关联的CE发送从其他IPSC接收的客户网络地址，并且每个CE填充本地路由表，其中使用与数据虚拟电路映射客户网络的信息。

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