公开(公告)号：US20130070762A1

公开(公告)日：2013-03-21

申请号：US13237806

申请日：2011-09-20

申请人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Daniel E. Talayco ,  Guido Appenzeller ,  R. Kyle Forster

发明人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Daniel E. Talayco ,  Guido Appenzeller ,  R. Kyle Forster

IPC分类号： H04L12/56

CPC分类号： H04L49/70 ,  H04L41/0893

摘要： A network may include network switches with network switch ports that may be coupled to end hosts. The network switches may be controlled by a controller such as a controller server. Virtual switches may be formed using the controller from groups of the network switch ports and the end hosts. Each virtual switch may include virtual interfaces associated with end hosts or network switches. Virtual links may be formed that define network connections between the virtual interfaces and end hosts or between two virtual interfaces. Virtual network policies such as selective packet forwarding, packet dropping, packet redirection, packet modification, or packet logging may be implemented at selected virtual interfaces to control traffic through the communications network. The controller may translate the virtual network policies into network switch forwarding paths that satisfy the virtual network policies.

摘要翻译： 网络可以包括具有可以耦合到终端主机的网络交换机端口的网络交换机。 网络交换机可以由诸如控制器服务器的控制器来控制。 可以使用来自网络交换机端口和终端主机的组的控制器来形成虚拟交换机。 每个虚拟交换机可以包括与终端主机或网络交换机相关联的虚拟接口。 可以形成虚拟链路，其定义虚拟接口和终端主机之间或两个虚拟接口之间的网络连接。 可以在所选择的虚拟接口处实现虚拟网络策略，例如选择性分组转发，丢包，分组重定向，分组修改或分组记录，以控制通过通信网络的业务。 控制器可将虚拟网络策略转换为满足虚拟网络策略的网络交换机转发路径。

公开(公告)号：US09185056B2

公开(公告)日：2015-11-10

申请号：US13237806

申请日：2011-09-20

申请人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Daniel E. Talayco ,  Guido Appenzeller ,  R. Kyle Forster

发明人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Daniel E. Talayco ,  Guido Appenzeller ,  R. Kyle Forster

IPC分类号： H04L12/28 ,  H04L12/931 ,  H04L12/24

CPC分类号： H04L49/70 ,  H04L41/0893

摘要： A network may include network switches with network switch ports that may be coupled to end hosts. The network switches may be controlled by a controller such as a controller server. Virtual switches may be formed using the controller from groups of the network switch ports and the end hosts. Each virtual switch may include virtual interfaces associated with end hosts or network switches. Virtual links may be formed that define network connections between the virtual interfaces and end hosts or between two virtual interfaces. Virtual network policies such as selective packet forwarding, packet dropping, packet redirection, packet modification, or packet logging may be implemented at selected virtual interfaces to control traffic through the communications network. The controller may translate the virtual network policies into network switch forwarding paths that satisfy the virtual network policies.

摘要翻译： 网络可以包括具有可以耦合到终端主机的网络交换机端口的网络交换机。 网络交换机可以由诸如控制器服务器的控制器来控制。 可以使用来自网络交换机端口和终端主机的组的控制器来形成虚拟交换机。 每个虚拟交换机可以包括与终端主机或网络交换机相关联的虚拟接口。 可以形成虚拟链路，其定义虚拟接口和终端主机之间或两个虚拟接口之间的网络连接。 可以在所选择的虚拟接口处实现虚拟网络策略，例如选择性分组转发，丢包，分组重定向，分组修改或分组记录，以控制通过通信网络的业务。 控制器可将虚拟网络策略转换为满足虚拟网络策略的网络交换机转发路径。

公开(公告)号：US10142160B1

公开(公告)日：2018-11-27

申请号：US13252966

申请日：2011-10-04

申请人： Robert Edward Adams ,  Daniel E. Talayco ,  Mandeep Singh Dhami ,  Shudong Zhou ,  Kanzhe Jiang ,  Guido Appenzeller

发明人： Robert Edward Adams ,  Daniel E. Talayco ,  Mandeep Singh Dhami ,  Shudong Zhou ,  Kanzhe Jiang ,  Guido Appenzeller

IPC分类号： H04L12/24

摘要： A controller may fulfill hardware address requests that are sent by source end hosts in a network to discover hardware addresses of destination end hosts. The controller may use network topology information to determine how to process the hardware address requests. The controller may retrieve a requested hardware address from a database of end hosts. If the controller is able to retrieve the hardware address of a destination end host from the database of end hosts, the controller may provide the source end host with a reply packet that contains the requested hardware address. If the controller is unable to retrieve the requested hardware address, the controller may form request packets to discover the address of the second end host and/or to discover a packet forwarding path between the source end host and the destination end host.

公开(公告)号：US08693344B1

公开(公告)日：2014-04-08

申请号：US13246611

申请日：2011-09-27

申请人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Robert W. Sherwood ,  Daniel E. Talayco ,  Shudong Zhou

发明人： Robert Edward Adams ,  Mandeep Singh Dhami ,  Robert W. Sherwood ,  Daniel E. Talayco ,  Shudong Zhou

IPC分类号： H04L12/26 ,  H04L12/28

CPC分类号： H04L49/65 ,  H04L41/0893

摘要： Network policies that control the flow of traffic through a network may be implemented using a controller server that controls a network of switches. Based on network packet attributes, the controller server may identify network policies that are associated with the network traffic. The controller server may identify dependencies between the network policies based on priorities that are associated with the network policies and overlap between the network policies. The controller server may provide the switches with packet forwarding rules based on the identified dependencies between the network policies, network switch attributes, and network switch capabilities. The packet forwarding rules may implement network policies for current network traffic and future network traffic.

摘要翻译： 控制通过网络流量的网络策略可以使用控制交换机网络的控制器服务器实现。 基于网络分组属性，控制器服务器可以识别与网络流量相关联的网络策略。 控制器服务器可以基于与网络策略相关联的优先级和网络策略之间的重叠来识别网络策略之间的依赖关系。 控制器服务器可以基于所确定的网络策略，网络交换机属性和网络交换机能力之间的相关性来为交换机提供分组转发规则。 分组转发规则可以实现当前网络流量和未来网络流量的网络策略。

公开(公告)号：US09264295B1

公开(公告)日：2016-02-16

申请号：US13411496

申请日：2012-03-02

申请人： Robert W. Sherwood ,  Robert Edward Adams ,  Daniel E. Talayco ,  Robert K. Vaterlaus ,  Omar Baldonado

发明人： Robert W. Sherwood ,  Robert Edward Adams ,  Daniel E. Talayco ,  Robert K. Vaterlaus ,  Omar Baldonado

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L12/24 ,  H04W28/02

CPC分类号： H04L41/00 ,  H04L12/185 ,  H04L41/0803 ,  H04L45/04 ,  H04L45/42 ,  H04L45/64 ,  H04L45/74 ,  H04L49/3009 ,  H04Q2213/00 ,  H04W28/02

摘要： A network of switches that forwards network packets between end hosts may be controlled by a controller. The controller may maintain information that identifies subsets of the end hosts that are associated with respective broadcast domains. The controller may configure the switches in the network to identify broadcast network packets and to forward the broadcast network packets to the controller. The controller may identify which broadcast domain is associated with a received broadcast network packet based on information such as source information retrieved from the broadcast network packet. The controller may identify switches that are coupled to the end hosts of a broadcast domain associated with the received broadcast network packet. The controller may forward the broadcast network packet to the identified switches through network control paths and may direct the identified switches to forward the broadcast network packet to end hosts of the associated broadcast domain.

摘要翻译： 在终端主机之间转发网络分组的交换机网络可以由控制器控制。 控制器可以维护标识与相应广播域相关联的终端主机的子集的信息。 控制器可以配置网络中的交换机，以识别广播网络分组，并将广播网络分组转发到控制器。 控制器可以基于诸如从广播网络分组检索的源信息的信息来识别哪个广播域与所接收的广播网络分组相关联。 控制器可以识别耦合到与所接收的广播网络分组相关联的广播域的终端主机的交换机。 控制器可以通过网络控制路径将广播网络分组转发到所识别的交换机，并且可以指示所识别的交换机将广播网络分组转发到相关广播域的终端主机。

公开(公告)号：US09036636B1

公开(公告)日：2015-05-19

申请号：US13367256

申请日：2012-02-06

申请人： Robert W. Sherwood ,  Robert Edward Adams ,  Daniel E. Talayco ,  Omar Baldonado ,  Robert K. Vaterlaus

发明人： Robert W. Sherwood ,  Robert Edward Adams ,  Daniel E. Talayco ,  Omar Baldonado ,  Robert K. Vaterlaus

IPC分类号： H04L12/403 ,  H04L12/715 ,  H04L12/46

CPC分类号： H04L45/04 ,  H04L12/4633

摘要： A network of switches that forwards network packets between end hosts may be controlled by a controller. The controller may maintain information that identifies subsets of the end hosts that are associated with respective broadcast domains. The controller may use network topology information to determine which of the switches are coupled in a forwarding tree formed from network paths between the end hosts of a broadcast domain. The controller may be used to configure the switches with an identifier that identifies which broadcast domain is associated with each subset of end hosts. The controller may configure switches of a given forwarding tree that are coupled to end hosts of an associated broadcast domain to modify broadcast network packets received from the end hosts with the identifier and to forward the modified broadcast network packets along the forwarding tree exclusively to end hosts of the associated broadcast domain.

摘要翻译： 在终端主机之间转发网络分组的交换机网络可以由控制器控制。 控制器可以维护标识与相应广播域相关联的终端主机的子集的信息。 控制器可以使用网络拓扑信息来确定哪个交换机在由广播域的终端主机之间的网络路径形成的转发树中耦合。 控制器可以用于配置具有标识哪个广播域与终端主机的每个子集相关联的标识符的交换机。 控制器可以配置给定转发树的交换机，该转发树被耦合到相关联的广播域的终端主机，以修改从终端主机接收到的标识符的广播网络分组，并将修改的广播网络分组沿转发树转发到终端主机 的相关广播域。