公开(公告)号：US20150244617A1

公开(公告)日：2015-08-27

申请号：US14406107

申请日：2013-06-05

Applicant: Juniper Networks, Inc.

Inventor： Harshad Bhaskar Nakil ,  Ankur Singla ,  Rajashekar Reddy ,  Tirthankar Ghose ,  ND Ramesh ,  Pedro Marques ,  Hampapur Ajay ,  Ashish Ranjan

IPC: H04L12/721 ,  H04L12/26 ,  G06F9/455 ,  H04L12/931

CPC classification number: G06F9/45558 ,  G06F9/455 ,  G06F11/07 ,  G06F2009/45595 ,  H04L41/0631 ,  H04L41/0856 ,  H04L41/0893 ,  H04L43/0852 ,  H04L43/10 ,  H04L49/70 ,  H04L61/103 ,  H04L69/40

Abstract: In general, techniques are described for configuring and managing virtual networks. For example, a distributed virtual network controller is described that configures and manages an overlay network within a physical network formed by plurality of switches. A plurality of servers are interconnected by the switch fabric, each of the servers comprising an operating environment executing one or more virtual machines in communication via the overlay networks. The servers comprises a set of virtual switches that extends the overlay network as a virtual network to the operating environment of the virtual machines. The controller may instruct the servers and the virtual switches to perform various operations, such as determining a physical network path taken by packets of a network packet flow, determining latency through the network, re-routing traffic in the virtual network due to network events, replicating traffic for multicasting, providing multi-tenant services to support multiple virtual networks, monitoring and logging traffic characteristics within the virtual networks and other operations.

Abstract translation: 一般来说，描述了配置和管理虚拟网络的技术。 例如，描述了分布式虚拟网络控制器，其配置和管理由多个交换机形成的物理网络内的覆盖网络。 多个服务器通过交换结构互连，每个服务器包括经由覆盖网络进行通信的一个或多个虚拟机的操作环境。 这些服务器包括一组虚拟交换机，其将作为虚拟网络的覆盖网络扩展到虚拟机的操作环境。 控制器可以指示服务器和虚拟交换机执行各种操作，例如确定网络分组流的分组采取的物理网络路径，通过网络确定等待时间，由于网络事件重新路由虚拟网络中的业务， 复制多播流量，提供多租户服务以支持多个虚拟网络，监控和记录虚拟网络内的流量特性和其他操作。

公开(公告)号：US20130329605A1

公开(公告)日：2013-12-12

申请号：US13843365

申请日：2013-03-15

Applicant: JUNIPER NETWORKS, INC.

Inventor： Harshad Bhaskar Nakil ,  Pedro R. Marques ,  Hampapur Ajay ,  Ashish Ranjan ,  Ankur Singla

IPC: H04L12/56

CPC classification number: H04L41/0668 ,  H04L41/0659 ,  H04L41/12 ,  H04L45/02 ,  H04L45/28 ,  H04L49/70 ,  H04L67/32

Abstract: Techniques are described to provide multicast service within a virtual network using a virtual network controller and endpoint replication without requiring multicast support in the underlying network. The virtual network controller is configured to create a multicast tree for endpoint devices of a multicast group in the virtual network at a centralized location instead of in a distributed fashion. The virtual network controller communicates the multicast tree to one or more of the endpoint devices of the multicast group to instruct the endpoint devices to replicate and forward multicast packets to other endpoint devices according to the multicast tree. The replication and forwarding of multicast packets is performed by virtual switches executed on the endpoint devices in the virtual network. No replication is performed within the underlying network. The techniques enable multicast service within a virtual network without requiring multicast support in the underlying network.

Abstract translation: 描述技术来使用虚拟网络控制器和端点复制在虚拟网络内提供多播服务，而不需要在底层网络中进行组播支持。 虚拟网络控制器被配置为在集中位置而不是以分布式方式为虚拟网络中的多播组的端点设备创建多播树。 虚拟网络控制器将多播树通信给组播组的一个或多个端点设备，以指示端点设备根据多播树复制和转发组播数据包到其他端点设备。 组播数据包的复制和转发由在虚拟网络中的端点设备上执行的虚拟交换机执行。 底层网络中不执行复制。 这些技术使得虚拟网络内的多播服务能够在底层网络中不需要组播支持。

公开(公告)号：US10083026B1

公开(公告)日：2018-09-25

申请号：US15087286

申请日：2016-03-31

Applicant: Juniper Networks, Inc.

Inventor： Suresh Kumar Vinapamula Venkata ,  Ashish Ranjan ,  Hampapur Ajay ,  Sachin Bansal

IPC: G06F9/44 ,  G06F8/656 ,  G06F8/65 ,  H04L29/08 ,  H04L12/713 ,  H04L12/24

CPC classification number: G06F8/656 ,  G06F8/65 ,  G06F9/45533 ,  H04L41/082 ,  H04L45/586 ,  H04L45/64 ,  H04L67/148 ,  H04L67/34

Abstract: Techniques are disclosed describing an In-Service Software Upgrade for a Software Defined Networking (SDN) controller of a cloud data center. A cloud data center includes a first SDN controller configured to perform session management of a plurality of session instances, an orchestration engine communicatively coupled to the first SDN controller via a northbound application program interface (API); and a plurality of compute nodes configured to perform compute functions for the plurality of session instances. In response to receiving a request to perform an in-service software upgrade (ISSU) of the first SDN controller, the orchestration engine spawns a second, upgraded SDN controller on the cloud data center. An ISSU process initializes the second SDN controller and transfers session management for the plurality of session instances from the first SDN controller to the second SDN controller. Finally, the ISSU process removes the first SDN controller from the cloud data center.

公开(公告)号：US09374270B2

公开(公告)日：2016-06-21

申请号：US13843365

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： Harshad Bhaskar Nakil ,  Pedro R. Marques ,  Hampapur Ajay ,  Ashish Ranjan ,  Ankur Singla

IPC: H04L12/28 ,  H04L12/24 ,  H04L12/931 ,  H04L12/751 ,  H04L29/08 ,  H04L12/703

CPC classification number: H04L41/0668 ,  H04L41/0659 ,  H04L41/12 ,  H04L45/02 ,  H04L45/28 ,  H04L49/70 ,  H04L67/32

Abstract: Techniques are described to provide multicast service within a virtual network using a virtual network controller and endpoint replication without requiring multicast support in the underlying network. The virtual network controller is configured to create a multicast tree for endpoint devices of a multicast group in the virtual network at a centralized location instead of in a distributed fashion. The virtual network controller communicates the multicast tree to one or more of the endpoint devices of the multicast group to instruct the endpoint devices to replicate and forward multicast packets to other endpoint devices according to the multicast tree. The replication and forwarding of multicast packets is performed by virtual switches executed on the endpoint devices in the virtual network. No replication is performed within the underlying network. The techniques enable multicast service within a virtual network without requiring multicast support in the underlying network.

Abstract translation: 描述技术来使用虚拟网络控制器和端点复制在虚拟网络内提供多播服务，而不需要在底层网络中进行组播支持。 虚拟网络控制器被配置为在集中位置而不是以分布式方式为虚拟网络中的多播组的端点设备创建多播树。 虚拟网络控制器将多播树通信给组播组的一个或多个端点设备，以指示端点设备根据多播树复制和转发组播数据包到其他端点设备。 组播数据包的复制和转发由在虚拟网络中的端点设备上执行的虚拟交换机执行。 底层网络中不执行复制。 这些技术使得虚拟网络内的多播服务能够在底层网络中不需要组播支持。

公开(公告)号：US08953441B2

公开(公告)日：2015-02-10

申请号：US13840902

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： Harshad Bhaskar Nakil ,  Pedro R. Marques ,  Hampapur Ajay ,  Ashish Ranjan ,  Ankur Singla

IPC: H04L12/26 ,  H04L12/24 ,  H04L12/751 ,  H04L29/08

CPC classification number: H04L41/0668 ,  H04L41/0659 ,  H04L41/12 ,  H04L45/02 ,  H04L45/28 ,  H04L49/70 ,  H04L67/32

Abstract: In one example, a network device includes a virtual network agent, and a network interface to send network packets to the virtual network controller using a default route for a physical network prior to establishing a communication session between a virtual network controller and the virtual network agent, wherein, after establishing the communication session between the virtual network controller device and the virtual network agent, the virtual network agent receives from the virtual network controller a command to install a new route at the network device, wherein the new route specifies encapsulation information to use for encapsulating network packets for sending the network packets to the virtual network controller over an overlay network, and wherein, responsive to detecting a failed link in the physical network, the virtual network agent sends packets to the virtual network controller on an alternate route in the overlay network.

Abstract translation: 在一个示例中，网络设备包括虚拟网络代理和网络接口，用于在虚拟网络控制器和虚拟网络代理之间建立通信会话之前，使用物理网络的默认路由向虚拟网络控制器发送网络分组 其中，在虚拟网络控制器设备和虚拟网络代理建立通信会话之后，虚拟网络代理从虚拟网络控制器接收在网络设备上安装新路由的命令，其中新路由指定封装信息 用于封装网络分组以通过覆盖网络将网络分组发送到虚拟网络控制器，并且其中响应于检测物理网络中的故障链路，虚拟网络代理在备用路由上向虚拟网络控制器发送分组 覆盖网络。

公开(公告)号：US20130332577A1

公开(公告)日：2013-12-12

申请号：US13835017

申请日：2013-03-15

Applicant: JUNIPER NETWORKS, INC.

Inventor： Harshad Bhaskar Nakil ,  Pedro R. Marques ,  Hampapur Ajay ,  Ashish Ranjan ,  Ankur Singla

IPC: H04L29/08

CPC classification number: H04L41/0668 ,  H04L41/0659 ,  H04L41/12 ,  H04L45/02 ,  H04L45/28 ,  H04L49/70 ,  H04L67/32

Abstract: In general, techniques are described for facilitating multi-tenancy of a server accessed by virtual networks of a data center. A device included within a data center comprising one or more processors may perform the techniques. The processors may be configured to execute a virtual switch that supports a number of virtual networks executing within the data center. The virtual switch may be configured to receive a request regarding data associated with an identifier that is unique within one of the virtual networks that originated the request. The virtual switch may then translate the identifier included within the request to generate a globally unique identifier that is unique within the plurality of virtual networks, update the request to replace the identifier included within the request with the globally unique identifier, and transmit the updated request to a server of the data center.

Abstract translation: 通常，描述了用于促进由数据中心的虚拟网络访问的服务器的多租户的技术。 包括在包括一个或多个处理器的数据中心内的设备可以执行该技术。 处理器可以被配置为执行支持在数据中心内执行的多个虚拟网络的虚拟交换机。 虚拟交换机可以被配置为接收关于与发起请求的虚拟网络之一内的唯一的标识符相关联的数据的请求。 虚拟交换机然后可以转换包括在请求内的标识符，以生成在多个虚拟网络中是唯一的全局唯一标识符，更新请求以用全局唯一标识符替换请求中包含的标识符，并且发送更新的请求 到数据中心的服务器。