公开(公告)号：US09596159B2

公开(公告)日：2017-03-14

申请号：US14788398

申请日：2015-06-30

Applicant: Juniper Networks, Inc.

Inventor： Tirthankar Ghose ,  Harshad Bhaskar Nakil ,  ND Ramesh

IPC: H04L12/26 ,  H04L12/931 ,  H04L12/24 ,  H04L12/713 ,  H04L12/937 ,  H04L29/06

CPC classification number: H04L43/0852 ,  H04L41/12 ,  H04L43/028 ,  H04L43/106 ,  H04L45/586 ,  H04L49/254 ,  H04L49/356 ,  H04L49/70 ,  H04L69/22

Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.

Abstract translation: 描述了用于确定物理网络中的延迟的技术，其包括数据包在其上行进的多个网络设备。 虚拟网络控制器从网络中的多个网络设备接收多个消息，每个消息包括包含唯一标识原始分组的原始分组的不变部分的散列的分组签名， 接收相应消息的多个网络设备，以及指示从其接收相应消息的网络设备处理原始分组的时间的时间戳。 虚拟网络控制器基于对具有公共分组签名的所识别的消息的内容的分析来确定网络中的物理网络路径的等待时间。

公开(公告)号：US20150304194A1

公开(公告)日：2015-10-22

申请号：US14788398

申请日：2015-06-30

Applicant: Juniper Networks, Inc.

Inventor： Tirthankar Ghose ,  Harshad Bhaskar Nakil ,  ND Ramesh

IPC: H04L12/26 ,  H04L29/06 ,  H04L12/713 ,  H04L12/931 ,  H04L12/937

CPC classification number: H04L43/0852 ,  H04L41/12 ,  H04L43/028 ,  H04L43/106 ,  H04L45/586 ,  H04L49/254 ,  H04L49/356 ,  H04L49/70 ,  H04L69/22

Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.

Abstract translation: 描述了用于确定物理网络中的延迟的技术，其包括数据包在其上行进的多个网络设备。 虚拟网络控制器从网络中的多个网络设备接收多个消息，每个消息包括包含唯一标识原始分组的原始分组的不变部分的散列的分组签名， 接收相应消息的多个网络设备，以及指示从其接收相应消息的网络设备处理原始分组的时间的时间戳。 虚拟网络控制器基于对具有公共分组签名的所识别的消息的内容的分析来确定网络中的物理网络路径的等待时间。

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。