公开(公告)号：US20150281120A1

公开(公告)日：2015-10-01

申请号：US14309736

申请日：2014-06-19

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu

IPC: H04L12/927 ,  H04L12/801

CPC classification number: H04L47/805 ,  H04L47/10 ,  H04L47/30 ,  H04L47/52

Abstract: A high-performance, scalable and drop-free data center switch fabric and infrastructure is described. The data center switch fabric may leverage low cost, off-the-shelf packet-based switching components (e.g., IP over Ethernet (IPoE)) and overlay forwarding technologies rather than proprietary switch fabric. In one example, host network accelerators (HNAs) are positioned between servers (e.g., virtual machines or dedicated servers) of the data center and an IPoE core network that provides point-to-point connectivity between the servers. The HNAs are hardware devices that embed virtual routers on one or more integrated circuits, where the virtual router are configured to extend the one or more virtual networks to the virtual machines and to seamlessly transport packets over the switch fabric using an overlay network. In other words, the HNAs provide hardware-based, seamless access interfaces to overlay technologies used for communicating packet flows through the core switching network of the data center.

Abstract translation: 描述了高性能，可扩展和无丢包的数据中心交换结构和基础架构。 数据中心交换结构可以利用低成本，现成的基于分组的交换组件（例如，IP over Ethernet（IPoE））和覆盖转发技术而不是专有交换结构。 在一个示例中，主机网络加速器（HNA）位于数据中心的服务器（例如，虚拟机或专用服务器）之间，以及提供服务器之间的点对点连接的IPoE核心网络。 HNA是将虚拟路由器嵌入到一个或多个集成电路上的硬件设备，其中虚拟路由器被配置为将一个或多个虚拟网络扩展到虚拟机，并且使用覆盖网络通过交换结构无缝地传输分组。 换句话说，HNA提供基于硬件的无缝接入接口，用于通过数据中心的核心交换网络传送分组流的覆盖技术。

公开(公告)号：US09100323B1

公开(公告)日：2015-08-04

申请号：US14101019

申请日：2013-12-09

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu ,  Jean-Marc Frailong ,  Sarin Thomas ,  Srihari Vegesna ,  David J. Ofelt ,  Chang-Hong Wu

IPC: H04L12/28 ,  H04L12/761 ,  H04L12/931 ,  H04L12/861

CPC classification number: H04L45/16 ,  H04L12/1863 ,  H04L49/201 ,  H04L49/90 ,  H04L67/1095

Abstract: In general, the invention is directed to techniques for reducing deadlocks that may arise when performing fabric replication. For example, as described herein, a network device includes packet replicators that each comprises a plurality of resource partitions. A replication data structure for a packet received by the network device includes packet replicator nodes that are arranged hierarchically to occupy one or more levels of the replication data structure. Each of the resource partitions in each of the plurality of packet replicators is associated with a different level of the replication data structure. The packet replicators replicate the packet according to the replication data structure, and each of the packet replicators handles the packet using the one of the resource partitions of the packet replicator that is associated with the level of the replication data structure occupied by the node that corresponds to that particular packet replicator.

Abstract translation: 通常，本发明涉及用于减少执行织物复制时可能出现的死锁的技术。 例如，如本文所述，网络设备包括每个包括多个资源分区的分组复制器。 由网络设备接收的分组的复制数据结构包括分层布置以占据复制数据结构的一个或多个级别的分组复制者节点。 多个分组复制器中的每一个中的每个资源分区与复制数据结构的不同级别相关联。 数据包复制器根据复制数据结构复制数据包，并且每个数据包复制器使用与复制数据结构所占用的复制数据结构的级别相关联的数据包复制器的资源分区之一处理数据包 到该特定数据包复制器。

公开(公告)号：US20130230322A1

公开(公告)日：2013-09-05

申请号：US13865938

申请日：2013-04-18

Applicant: JUNIPER NETWORKS, INC.

Inventor： Pradeep Sindhu

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04J14/0241 ,  H04J14/0257 ,  H04J14/0267 ,  H04J14/028 ,  H04L45/62 ,  H04L49/101 ,  H04L49/102 ,  H04L49/25 ,  H04L49/40 ,  H04Q11/0005 ,  H04Q2011/0039 ,  H04Q2011/0052

Abstract: A multi-chassis network device includes a plurality of nodes that operate as a single device within the network and a switch fabric that forwards data plane packets between the plurality of nodes. The switch fabric includes a set of multiplexed optical interconnects coupling the nodes. For example, a multi-chassis router includes a plurality of routing nodes that operate as a single router within a network and a switch fabric that forwards packets between the plurality of routing nodes. The switch fabric includes at least one multiplexed optical interconnect coupling the routing nodes. The nodes of the multi-chassis router may direct portions of the optical signal over the multiplexed optical interconnect to different each other using wave-division multiplexing.

Abstract translation: 多机箱网络设备包括作为网络内的单个设备操作的多个节点以及在多个节点之间转发数据平面分组的交换结构。 交换结构包括耦合节点的一组复用光互连。 例如，多机架路由器包括多个路由节点，其在网络内作为单个路由器运行，并且交换结构在多个路由节点之间转发分组。 交换结构包括耦合路由节点的至少一个复用光互连。 多机架式路由器的节点可以使用波分复用将多路复用光互连上的光信号的部分引导到彼此不同。

公开(公告)号：US09985911B2

公开(公告)日：2018-05-29

申请号：US14621892

申请日：2015-02-13

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu ,  Gunes Aybay ,  Jean-Marc Frailong ,  Anjan Venkatramani ,  Quaizar Vohra

IPC: H04L12/935 ,  H04L12/24 ,  H04L12/947 ,  H04L12/931 ,  H04L29/06

CPC classification number: H04L49/30 ,  H04L41/0806 ,  H04L41/0846 ,  H04L49/257 ,  H04L49/35 ,  H04L49/356 ,  H04L63/101

Abstract: In one embodiment, edge devices can be configured to be coupled to a multi-stage switch fabric and peripheral processing devices. The edge devices and the multi-stage switch fabric can collectively define a single logical entity. A first edge device from the edge devices can be configured to be coupled to a first peripheral processing device from the peripheral processing devices. The second edge device from the edge devices can be configured to be coupled to a second peripheral processing device from the peripheral processing devices. The first edge device can be configured such that virtual resources including a first virtual resource can be defined at the first peripheral processing device. A network management module coupled to the edge devices and configured to provision the virtual resources such that the first virtual resource can be migrated from the first peripheral processing device to the second peripheral processing device.

公开(公告)号：US09350661B2

公开(公告)日：2016-05-24

申请号：US14231350

申请日：2014-03-31

Applicant: Juniper Networks, Inc.

Inventor： James M. Murphy ,  Abhijit K. Choudhury ,  Pradeep Sindhu ,  Ina Minei ,  Jayabharat Boddu

IPC: H04L12/801 ,  H04L12/28 ,  H04L12/24 ,  H04L12/717 ,  H04L12/723

CPC classification number: H04L47/12 ,  H04L12/28 ,  H04L41/0654 ,  H04L41/12 ,  H04L43/10 ,  H04L45/42 ,  H04L45/50

Abstract: An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.

Abstract translation: 描述了一种接入网络，其中集中式控制器通过聚合和接入基础设施向位于接近用户设备的接入节点提供从服务提供商网络的面向核心边缘的无缝端到端服务。 控制器操作以提供用于配置服务提供商的网络的聚合节点（AG）的中央配置点，以便提供传输服务以在网络的相对边界上的接入节点（AX）和边缘路由器之间传输业务。

公开(公告)号：US20160094398A1

公开(公告)日：2016-03-31

申请号：US14500793

申请日：2014-09-29

Applicant: Juniper Networks, Inc.

Inventor： Abhijit Kumar Choudhury ,  James Michael Murphy ,  Jayabharat Boddu ,  Pradeep Sindhu

IPC: H04L12/24 ,  H04L12/717

CPC classification number: H04L45/42 ,  H04L45/02 ,  H04L45/28 ,  H04W40/04 ,  H04W40/24 ,  H04W84/18

Abstract: A mesh network of wired and/or wireless nodes is described in which a centralized controller provides seamless end-to-end service from the edge of the mesh network to mesh nodes located proximate to subscriber devices. The controller operates to provide a central configuration point for configuring forwarding planes of the mesh nodes of the mesh network, so as to set up transport data channels to transport traffic from the edge nodes via the mesh nodes to the subscriber devices.

Abstract translation: 描述了有线和/或无线节点的网状网络，其中集中控制器提供从网状网络的边缘到位于邻近用户设备的网状节点的无缝端到端服务。 控制器操作以提供用于配置网状网络的网状节点的转发平面的中央配置点，以便建立传输数据信道以将来自边缘节点的业务经由网格节点传送到订户设备。

公开(公告)号：US20150278148A1

公开(公告)日：2015-10-01

申请号：US14309714

申请日：2014-06-19

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu

IPC: G06F13/40 ,  G06F13/42

CPC classification number: G06F13/4081 ,  G06F13/385 ,  G06F13/4221 ,  H04L12/4633 ,  H04L12/4641 ,  H04L47/6215 ,  H04L49/70

Abstract: A high-performance, scalable and drop-free data center switch fabric and infrastructure is described. The data center switch fabric may leverage low cost, off-the-shelf packet-based switching components (e.g., IP over Ethernet (IPoE)) and overlay forwarding technologies rather than proprietary switch fabric. In one example, host network accelerators (HNAs) are positioned between servers (e.g., virtual machines or dedicated servers) of the data center and an IPoE core network that provides point-to-point connectivity between the servers. The HNAs are hardware devices that embed virtual routers on one or more integrated circuits, where the virtual router are configured to extend the one or more virtual networks to the virtual machines and to seamlessly transport packets over the switch fabric using an overlay network. In other words, the HNAs provide hardware-based, seamless access interfaces to overlay technologies used for communicating packet flows through the core switching network of the data center.

Abstract translation: 描述了高性能，可扩展和无丢包的数据中心交换结构和基础架构。 数据中心交换结构可以利用低成本，现成的基于分组的交换组件（例如，IP over Ethernet（IPoE））和覆盖转发技术而不是专有交换结构。 在一个示例中，主机网络加速器（HNA）位于数据中心的服务器（例如，虚拟机或专用服务器）之间，以及提供服务器之间的点对点连接的IPoE核心网络。 HNA是将虚拟路由器嵌入到一个或多个集成电路上的硬件设备，其中虚拟路由器被配置为将一个或多个虚拟网络扩展到虚拟机，并且使用覆盖网络通过交换结构无缝地传输分组。 换句话说，HNA提供基于硬件的无缝接入接口，用于通过数据中心的核心交换网络传送分组流的覆盖技术。

公开(公告)号：US09077466B2

公开(公告)日：2015-07-07

申请号：US13692425

申请日：2012-12-03

Applicant: Juniper Networks, Inc.

Inventor： Sarin Thomas ,  Srihari Vegesna ,  Pradeep Sindhu ,  Chi-Chung Kenny Chen ,  Jean-Marc Frailong ,  David J. Ofelt ,  Philip A. Thomas ,  Chang-Hong Wu

IPC: H04L12/28 ,  H04J3/00 ,  H04L12/947 ,  H04L12/937

CPC classification number: H04J3/00 ,  H04L49/251 ,  H04L49/254

Abstract: In one embodiment, a method can include receiving at an egress schedule module a request to schedule transmission of a group of cells from an ingress queue through a switch fabric of a multi-stage switch. The ingress queue can be associated with an ingress stage of the multi-stage switch. The egress schedule module can be associated with an egress stage of the multi-stage switch. The method can also include determining, in response to the request, that an egress port at the egress stage of the multi-stage switch is available to transmit the group of cells from the multi-stage switch.

Abstract translation: 在一个实施例中，一种方法可以包括在出口调度模块处接收通过多级交换机的交换结构调度来自进入队列的小区的传输的请求。 入站队列可以与多级交换机的进入级相关联。 出口调度模块可以与多级交换机的出口级相关联。 该方法还可以包括响应于该请求确定多级交换机的出口级的出口端口可用于从多级交换机发送小区组。

公开(公告)号：US20150172196A1

公开(公告)日：2015-06-18

申请号：US14628726

申请日：2015-02-23

Applicant: Juniper Networks, Inc.

Inventor： Avanindra Godbole ,  Pradeep Sindhu ,  Jean-Marc Frailong

IPC: H04L12/835

CPC classification number: H04L47/30 ,  H04L47/10 ,  H04L47/11 ,  H04L47/26 ,  H04L47/263 ,  H04L47/266 ,  H04L47/50 ,  H04L47/60 ,  H04L49/505 ,  H04L49/90

Abstract: In one embodiment, a method includes sending a first flow control signal to a first stage of transmit queues when a receive queue is in a congestion state. The method also includes sending a second flow control signal to a second stage of transmit queues different from the first stage of transmit queues when the receive queue is in the congestion state.

Abstract translation: 在一个实施例中，一种方法包括当接收队列处于拥塞状态时，向发射队列的第一级发送第一流控制信号。 该方法还包括当接收队列处于拥塞状态时，将第二流控制信号发送到与发送队列的第一级不同的发送队列的第二级。

公开(公告)号：US08798468B1

公开(公告)日：2014-08-05

申请号：US14091998

申请日：2013-11-27

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu

IPC: H04J14/00

CPC classification number: H04J14/0226 ,  H04B10/503 ,  H04J14/0221 ,  H04Q11/0071 ,  H04Q2011/0083

Abstract: A laser system includes an array of lasers that emit light at a number of different, fixed wavelengths. A group of optical transport systems connect to the laser system. Each of the optical transport systems is configured to modulate data signals onto the light from the laser system to create optical signals and transmit the optical signals on one or more optical fibers.

Abstract translation: 激光系统包括发射多个不同固定波长的光的激光阵列。 一组光传输系统连接到激光系统。 每个光传输系统被配置为将数据信号调制到来自激光系统的光上以产生光信号并且在一个或多个光纤上传输光信号。