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1. 发明授权

US08559314B2 Implementing OSPF in split-architecture networks 有权
公开(公告)号：US08559314B2
公开(公告)日：2013-10-15
申请号：US13208251
申请日：2011-08-11
申请人： Kiran Yedavalli , Neda Beheshti-Zavareh , Ying Zhang
发明人： Kiran Yedavalli , Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04L1/00
CPC分类号： H04L45/12 , H04L45/025 , H04L45/026 , H04L45/64
摘要： A method is implemented in a network element that functions as one of a plurality of controllers for one of a plurality of areas of a split architecture network. The controller provides a control plane for the area of the split architecture network where the controller is remote from a plurality of switches providing a data plane for the area of split architecture network. The controller facilitates optimized routing across the plurality of areas of the split architecture network by providing limited intra-area link cost data to other controllers of other areas of the split architecture network and to traditional routers of a network including the split architecture network. The limited intra-area link cost data provides costs of each possible shortest path traversal of the area of the controller without providing all internal link cost data.

2. 发明申请

US20130039214A1 Implementing OSPF in Split-Architecture Networks 有权
标题翻译：在分布式架构网络中实现OSPF
公开(公告)号：US20130039214A1
公开(公告)日：2013-02-14
申请号：US13208251
申请日：2011-08-11
申请人： Kiran Yedavalli , Neda Beheshti-Zavareh , Ying Zhang
发明人： Kiran Yedavalli , Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04L12/28
CPC分类号： H04L45/12 , H04L45/025 , H04L45/026 , H04L45/64
摘要： A method is implemented in a network element that functions as one of a plurality of controllers for one of a plurality of areas of a split architecture network. The controller provides a control plane for the area of the split architecture network where the controller is remote from a plurality of switches providing a data plane for the area of split architecture network. The controller facilitates optimized routing across the plurality of areas of the split architecture network by providing limited intra-area link cost data to other controllers of other areas of the split architecture network and to traditional routers of a network including the split architecture network. The limited intra-area link cost data provides costs of each possible shortest path traversal of the area of the controller without providing all internal link cost data.
摘要翻译：一种在分离架构网络的多个区域中的一个区域的多个控制器之一中起作用的网络元件中实现一种方法。控制器为分离式架构网络的区域提供控制平面，其中控制器远离多个交换机，为分割架构网络的区域提供数据平面。控制器通过向分裂架构网络的其他区域的其他控制器和包括分离架构网络的网络的传统路由器提供有限的区域内链路成本数据来促进跨分离架构网络的多个区域的优化路由。有限的区域内链路成本数据提供控制器区域中每个可能的最短路径遍历的成本，而不提供所有内部链路成本数据。

3. 发明授权

US09013995B2 Congestion control in packet data networking 有权
公开(公告)号：US09013995B2
公开(公告)日：2015-04-21
申请号：US13464182
申请日：2012-05-04
申请人： Neda Beheshti-Zavareh , Ying Zhang
发明人： Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04L12/26 , H04L12/801 , H04L12/815 , H04L12/891
CPC分类号： H04L47/12 , H04L43/062 , H04L43/0882 , H04L47/115 , H04L47/22 , H04L47/41 , Y02D50/30
摘要： A network element controls congestion in a link of a packet data network. A congested link is identified and a throttle rate is determined for one or more of the traffic groups traversing the congested link. The central controller determines the throttle rates using a weight of the group and the current traffic rate of the group through the link. The throttle rates are sent to switches to throttle traffic for each affected group.

4. 发明申请

US20130028142A1 RESILIENCY-AWARE HYBRID DESIGN OF CONTROLLER-SWITCH CONNECTIVITY IN A SPLIT-ARCHITECTURE SYSTEM 有权
标题翻译：分体式结构系统中控制器 - 开关连接的可靠性混合设计
公开(公告)号：US20130028142A1
公开(公告)日：2013-01-31
申请号：US13347592
申请日：2012-01-10
申请人： Neda Beheshti-Zavareh , Ying Zhang
发明人： Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04L12/28
CPC分类号： H04L45/48 , H04L45/12 , H04L45/22 , H04L45/24 , H04L45/28
摘要： A method and apparatus for optimizing the resilience of a network using a combination of in-band and out-of-band signaling is disclosed. The metric used in the embodiment's algorithm to determine resilience is the maximum number of protected neighbors. Nodes closer to the controller are assigned a higher weight than those further from the controller because if their connection to the network is interrupted, all their downstream nodes will be affected and disconnected. Therefore, when determining a path to the controller, switches with alternate paths to the controller are preferred. Dedicated connections using out-of-band signaling are assigned to convert unprotected nodes to protected nodes thus improving the resilience of the network.
摘要翻译：公开了一种使用带内和带外信令的组合优化网络的弹性的方法和装置。用于确定弹性的实施例算法中使用的度量是受保护邻居的最大数量。更靠近控制器的节点的分配权重比控制器更多，因为如果它们与网络的连接中断，则所有下游节点都将受到影响和断开。因此，当确定到控制器的路径时，具有到控制器的备用路径的交换机是优选的。分配使用带外信令的专用连接将未受保护的节点转换为受保护节点，从而提高网络的弹性。

5. 发明授权

US09154410B2 Resiliency-aware hybrid design of controller-switch connectivity in a split-architecture system 有权
标题翻译：分离式架构系统中控制器 - 交换机连接的弹性敏感混合设计
公开(公告)号：US09154410B2
公开(公告)日：2015-10-06
申请号：US13347592
申请日：2012-01-10
申请人： Neda Beheshti-Zavareh , Ying Zhang
发明人： Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04L12/753 , H04L12/707 , H04L12/703 , H04L12/721
CPC分类号： H04L45/48 , H04L45/12 , H04L45/22 , H04L45/24 , H04L45/28
摘要： A method and apparatus for optimizing the resilience of a network using a combination of in-band and out-of-band signaling is disclosed. The metric used in the embodiment's algorithm to determine resilience is the maximum number of protected neighbors. Nodes closer to the controller are assigned a higher weight than those further from the controller because if their connection to the network is interrupted, all their downstream nodes will be affected and disconnected. Therefore, when determining a path to the controller, switches with alternate paths to the controller are preferred. Dedicated connections using out-of-band signaling are assigned to convert unprotected nodes to protected nodes thus improving the resilience of the network.
摘要翻译：公开了一种使用带内和带外信令的组合优化网络的弹性的方法和装置。用于确定弹性的实施例算法中使用的度量是受保护邻居的最大数量。更靠近控制器的节点的分配权重比控制器更多，因为如果它们与网络的连接中断，则所有下游节点都将受到影响和断开。因此，当确定到控制器的路径时，具有到控制器的备用路径的交换机是优选的。分配使用带外信令的专用连接将未受保护的节点转换为受保护节点，从而提高网络的弹性。

6. 发明授权

US08811212B2 Controller placement for fast failover in the split architecture 有权
标题翻译：控制器布局，用于在拆分架构中快速故障切换
公开(公告)号：US08811212B2
公开(公告)日：2014-08-19
申请号：US13402732
申请日：2012-02-22
申请人： Neda Beheshti-Zavareh , Ying Zhang , Joel Halpern
发明人： Neda Beheshti-Zavareh , Ying Zhang , Joel Halpern
IPC分类号： H04L1/00
CPC分类号： H04L41/0663 , H04L41/0836 , H04L41/12 , H04L41/145 , H04L41/22 , H04L45/12 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/64 , H04W16/18
摘要： A method implemented by a network topology design system, the network topology design system including a processing device. The method to determine placement of a controller within a network with a split architecture where control plane components of the split architecture network are executed by a controller and the control plane components are separate from data plane components of the split architecture network. The placement of the controller is selected to minimize disruption of the split architecture network caused by a link failure, a switch failure or a connectivity loss between the controller and the data plane components.
摘要翻译：一种由网络拓扑设计系统实现的方法，该网络拓扑设计系统包括一个处理设备。确定控制器在具有分割架构的网络中的布置的方法，其中分离架构网络的控制平面组件由控制器和控制平面组件执行，分离架构网络的数据平面组件分离。选择控制器的放置以最小化由于链路故障，交换机故障或控制器与数据平面组件之间的连接性损失引起的分裂架构网络的中断。

7. 发明申请

US20140355453A1 METHOD AND ARRANGEMENT FOR FAULT ANALYSIS IN A MULTI-LAYER NETWORK 审中-公开
标题翻译：多层网络中故障分析的方法和布置
公开(公告)号：US20140355453A1
公开(公告)日：2014-12-04
申请号：US14367735
申请日：2012-01-16
申请人： Ying Zhang , Neda Beheshti-Zavareh , Alisa Devlic , Catalin Meirosu
发明人： Ying Zhang , Neda Beheshti-Zavareh , Alisa Devlic , Catalin Meirosu
IPC分类号： H04L1/24
CPC分类号： B01D19/0404 , B01D19/04 , B01D19/0409 , H04L41/065
摘要： The invention relates to a method for fault analysis in a multi-layer network. The method includes receiving a first set of performance measurements occurring in response to the fault and representing at least a first and a second layer in a multi-layer communications network. A probable set of network elements affected by the fault are localized. The type of fault is inferred from one or more symptoms in the performance measurements. The root cause of the failure is determined from a combination of information on probable set of network elements and inferred type of fault.The invention also relates to a network management node for carrying out the method. The node includes a root cause analyzer to detect affected network elements and fault type upon network failure, wherein affected network elements are determined in a spatial localization unit and the fault type is determined in a fault type inference unit.
摘要翻译：本发明涉及一种多层网络故障分析方法。该方法包括接收响应于故障而出现的第一组性能测量，并且在多层通信网络中表示至少第一层和第二层。受故障影响的一组可能的网络元素是本地化的。故障类型是从性能测量中的一个或多个症状推断出来的。故障的根本原因是根据可能的网络组件和推断的故障类型的信息的组合来确定。本发明还涉及一种用于执行该方法的网络管理节点。节点包括根本原因分析器，用于在网络故障时检测受影响的网络元件和故障类型，其中受影响的网络单元在空间定位单元中确定，故障类型在故障类型推理单元中确定。

8. 发明授权

US08804490B2 Controller placement for fast failover in the split architecture 有权
公开(公告)号：US08804490B2
公开(公告)日：2014-08-12
申请号：US13236296
申请日：2011-09-19
申请人： Mallik Tatipamula , Neda Beheshti-Zavareh , Ying Zhang
发明人： Mallik Tatipamula , Neda Beheshti-Zavareh , Ying Zhang
IPC分类号： H04J1/16 , H04J3/14 , H04L1/00 , H04L12/16 , H04L12/24 , G01R31/08 , G06F11/00 , G08C15/00 , H04L12/56
CPC分类号： H04L45/02 , H04L41/12 , H04L45/12 , H04L45/22 , H04L45/28 , H04L45/48
摘要： A method implemented by a network topology design system, the network topology design system including a processing device. The method to determine placement of a controller within a network with a split architecture where control plane components of the split architecture network are executed by a controller and the control plane components are separate from data plane components of the split architecture network. The placement of the controller is selected to minimize disruption of the split architecture network caused by a link failure, a switch failure or a connectivity loss between the controller and the data plane components.

9. 发明授权

US08762501B2 Implementing a 3G packet core in a cloud computer with openflow data and control planes 有权
标题翻译：在具有开放流数据和控制平面的云计算机中实现3G数据包核心
公开(公告)号：US08762501B2
公开(公告)日：2014-06-24
申请号：US13220471
申请日：2011-08-29
申请人： James Kempf , Neda Beheshti-Zavareh , Ying Zhang , Tord K. Nilsson , Bengt E. Johansson , Sten Rune Pettersson , Harald Luning
发明人： James Kempf , Neda Beheshti-Zavareh , Ying Zhang , Tord K. Nilsson , Bengt E. Johansson , Sten Rune Pettersson , Harald Luning
IPC分类号： G06F15/177 , G06F15/173 , H04W40/00
CPC分类号： H04L47/781 , H04L12/4633 , H04L12/4666 , H04L47/825 , H04W76/12
摘要： A method for implementing a general packet radio service (GPRS) tunnel protocol (GTP) in a packet core (PC) of a third generation (3G) network having a split architecture where a control plane of the PC of the 3G network is in a cloud computing system, the cloud computing system including a controller, the controller to execute a plurality of control plane modules, the control plane to communicate with the data plane of the PC through a control plane protocol, the data plane implemented in a plurality of network elements of the 3G network by configuring switches implementing a data plane of the SGSN and GGSN and intermediate switches to establish a first and second GTP tunnel endpoint.
摘要翻译：一种用于在第三代（3G）网络的分组核心（PC）中实现通用分组无线电业务（GPRS）隧道协议（GTP）的方法，所述第三代（3G）网络具有分离架构，其中所述3G网络的PC的控制平面处于云计算系统，云计算系统包括控制器，控制器执行多个控制平面模块，控制平面通过控制平面协议与PC的数据平面通信，数据平面在多个网络中实现通过配置实现SGSN和GGSN的数据平面的交换机和中间交换机来建立第一和第二GTP隧道端点，来实现3G网络的元素。

10. 发明申请

US20130258847A1 Congestion Control and Resource Allocation in Split Architecture Networks 有权
标题翻译：分拆架构网络中的拥塞控制和资源分配
公开(公告)号：US20130258847A1
公开(公告)日：2013-10-03
申请号：US13438631
申请日：2012-04-03
申请人： Ying Zhang , Neda Beheshti-Zavareh
发明人： Ying Zhang , Neda Beheshti-Zavareh
IPC分类号： H04L12/24
CPC分类号： H04L47/22 , H04L41/5025 , H04L43/0835 , H04L43/0882 , H04L47/41 , H04L47/822 , Y02D50/30
摘要： A controller performs network-wide congestion control in a split architecture network. The controller receives flow statistics from switches for each entity that communicates via the network. The controller chooses a most congested link as a bottleneck link based on a packet loss rate that is derived from the flow statistics and estimated for each entity on each link of the network. The controller identifies a target path in the network that passes through the bottleneck link and carries the most traffic, and calculates a throttling probability for each sharing entity that shares the target path based on the capacity of the bottleneck link, capacity of the first link of the target path, bandwidth consumption and packet loss rate of each sharing entity. The controller then transmits the throttling probability of each sharing entity to the ingress switch of the target path to reduce the congestion on the bottleneck link.
摘要翻译：控制器在分离式架构网络中执行全网络拥塞控制。控制器从交换机接收通过网络进行通信的每个实体的流量统计信息。控制器基于从流量统计导出并针对网络的每个链路上的每个实体估计的分组丢失率，选择最拥挤的链路作为瓶颈链路。控制器识别网络中通过瓶颈链路并承载最多流量的目标路径，并且基于瓶颈链路的容量计算共享目标路径的每个共享实体的节流概率，第一链路的容量每个共享实体的目标路径，带宽消耗和丢包率。然后，控制器将每个共享实体的节流概率发送到目标路径的入口交换机，以减少瓶颈链路上的拥塞。

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