公开(公告)号：US09253042B2

公开(公告)日：2016-02-02

申请号：US14041102

申请日：2013-09-30

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Curtis Yu ,  Vishal Kumar Singh ,  Yueping Zhang ,  Guofei Jiang

IPC: G01R31/08 ,  H04L12/24 ,  H04L12/26

CPC classification number: H04L41/12 ,  H04L43/0876 ,  H04L43/10 ,  Y02D30/30

Abstract: A method implemented in a network apparatus used in a network is disclosed. The method includes sensing network topology and network utilization, receiving a request from an application, deciding path setup requirement using network state information obtained from the network topology and the network utilization, and translating the path setup requirement into a rule to be installed. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在网络中使用的网络装置中实现的方法。 该方法包括感知网络拓扑和网络利用率，从应用接收请求，使用从网络拓扑获得的网络状态信息和网络利用率确定路径设置要求，以及将路径设置要求转换为要安装的规则。 还公开了其它方法，装置和系统。

公开(公告)号：US09654372B2

公开(公告)日：2017-05-16

申请号：US14300843

申请日：2014-06-10

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Curtis Yu ,  Abhishek Sharma ,  Guofei Jiang ,  Qiang Xu

IPC: H04L12/26

CPC classification number: H04L43/106 ,  H04L43/0852

Abstract: In a software defined network having switches including first and last switches and intermediate switches, wherein a default routing path exists between the first and last switches, a system and method are provided for computing path latency. The method includes inserting a respective monitoring rule(s) in each switch, mandating for each switch, forwarding a received rule matching packet to a next switch, and further mandating for the first switch and the last switch, sending a PacketIn message to a controller. The method includes inserting, in each switch, a respective monitoring probe(s) matching the respective monitoring rule(s) in a same switch to initiate mandates specified by the respective monitoring rule(s) in the same switch responsive to an arrival of the packet thereat. The method includes time-stamping the PacketIn messages to generate PacketIn timestamps, aggregating the PacketIn timestamps, and estimating the path latency from an aggregation of PacketIn timestamps.

公开(公告)号：US20140098678A1

公开(公告)日：2014-04-10

申请号：US14041102

申请日：2013-09-30

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Curtis Yu ,  Vishal Kumar Singh ,  Yueping Zhang ,  Guofei Jiang

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L43/0876 ,  H04L43/10 ,  Y02D30/30

Abstract: A method implemented in a network apparatus used in a network is disclosed. The method includes sensing network topology and network utilization, receiving a request from an application, deciding path setup requirement using network state information obtained from the network topology and the network utilization, and translating the path setup requirement into a rule to be installed. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在网络中使用的网络装置中实现的方法。 该方法包括感知网络拓扑和网络利用率，从应用接收请求，使用从网络拓扑获得的网络状态信息和网络利用率确定路径设置要求，以及将路径设置要求转换为要安装的规则。 还公开了其它方法，装置和系统。

公开(公告)号：US09143452B2

公开(公告)日：2015-09-22

申请号：US13973254

申请日：2013-08-22

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Anupam Das ,  Yueping Zhang ,  Vishal Kumar Singh ,  Curtis Yu ,  Guofei Jiang

IPC: H04L12/28 ,  H04L12/56 ,  H04L12/801 ,  H04L12/715 ,  H04L12/751

CPC classification number: H04L47/12 ,  H04L45/02 ,  H04L45/64 ,  Y02D30/30

Abstract: A method implemented in a network apparatus used in a network is disclosed. The method comprises collecting information about network topology from a network controller, collecting information about data movement, deciding routing in the network according to the information about network topology and the information about data movement, and providing information about the routing to the network controller, wherein the network controller enforces the routing in the network. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在网络中使用的网络装置中实现的方法。 该方法包括从网络控制器收集关于网络拓扑的信息，收集关于数据移动的信息，根据关于网络拓扑的信息和关于数据移动的信息来确定网络中的路由，以及向网络控制器提供关于路由的信息，其中 网络控制器在网络中实施路由。 还公开了其它方法，装置和系统。

公开(公告)号：US20150071108A1

公开(公告)日：2015-03-12

申请号：US14300843

申请日：2014-06-10

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Curtis Yu ,  Abhishek Sharma ,  Guofei Jiang ,  Qiang Xu

IPC: H04L12/26

CPC classification number: H04L43/106 ,  H04L43/0852

Abstract: In a software defined network having switches including first and last switches and intermediate switches, wherein a default routing path exists between the first and last switches, a system and method are provided for computing path latency. The method includes inserting a respective monitoring rule(s) in each switch, mandating for each switch, forwarding a received rule matching packet to a next switch, and further mandating for the first switch and the last switch, sending a PacketIn message to a controller. The method includes inserting, in each switch, a respective monitoring probe(s) matching the respective monitoring rule(s) in a same switch to initiate mandates specified by the respective monitoring rule(s) in the same switch responsive to an arrival of the packet thereat. The method includes time-stamping the PacketIn messages to generate PacketIn timestamps, aggregating the PacketIn timestamps, and estimating the path latency from an aggregation of PacketIn timestamps.

Abstract translation: 在具有包括第一和最后交换机和中间交换机的交换机的软件定义网络中，其中在第一和最后交换机之间存在默认路由路径，提供用于计算路径等待时间的系统和方法。 该方法包括在每个交换机中插入相应的监控规则，强制每个交换机，将接收到的规则匹配分组转发到下一个交换机，以及进一步强制第一交换机和最后一个交换机，向控制器发送分组输入消息 。 该方法包括在每个交换机中插入与同一交换机中的相应监控规则相匹配的相应监视探测器，以启动响应于相应监视规则到达的相应监控规则指定的任务 包在那里 该方法包括对PacketIn消息进行时间戳，以生成PacketIn时间戳，聚合PacketIn时间戳，并从PacketIn时间戳的聚合估计路径等待时间。

公开(公告)号：US20140064066A1

公开(公告)日：2014-03-06

申请号：US13973254

申请日：2013-08-22

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Anupam Das ,  Yueping Zhang ,  Vishal Kumar Singh ,  Curtis Yu ,  Guofei Jiang

IPC: H04L12/801

CPC classification number: H04L47/12 ,  H04L45/02 ,  H04L45/64 ,  Y02D30/30

Abstract: A method implemented in a network apparatus used in a network is disclosed. The method comprises collecting information about network topology from a network controller, collecting information about data movement, deciding routing in the network according to the information about network topology and the information about data movement, and providing information about the routing to the network controller, wherein the network controller enforces the routing in the network. Other methods, apparatuses, and systems also are disclosed.

Abstract translation: 公开了一种在网络中使用的网络装置中实现的方法。 该方法包括从网络控制器收集关于网络拓扑的信息，收集关于数据移动的信息，根据关于网络拓扑的信息和关于数据移动的信息来确定网络中的路由，以及向网络控制器提供关于路由的信息，其中 网络控制器在网络中实施路由。 还公开了其它方法，装置和系统。