公开(公告)号：US10291464B1

公开(公告)日：2019-05-14

申请号：US15429300

申请日：2017-02-10

Applicant: Juniper Networks, Inc.

Inventor： David Ward ,  Mu Lin ,  Sriram Raghunathan ,  Zi Zhou

IPC: H04L12/24 ,  H04L12/741 ,  H04L29/08 ,  H04L12/707 ,  H04L12/713

Abstract: Techniques are described for separating control plane functions in a network device using virtual machines. The techniques include initializing multiple virtual machine instances in a control unit of a standalone router, and running different control processes for the router in each of the virtual machines. For example, in a root system domain (RSD)-protected system domain (PSD) system, a control unit of the standalone router may support a RSD virtual machine (VM) and one or more PSD VMs configured to form logical devices and execute logically separate control processes without requiring physically separate, hardware-independent routing engines to form the PSDs. Each of the RSD VM and PSD VMs includes a separate kernel, an operating system, and control processes for the logical device. When a software failure occurs in the PSD VM, the PSD VM may perform a software failover without affecting the operation of the RSD VM.

公开(公告)号：US09444768B1

公开(公告)日：2016-09-13

申请号：US13750926

申请日：2013-01-25

Applicant: Juniper Networks, Inc.

Inventor： Sriram Raghunathan ,  Yong Luo ,  Wai Leung Chan ,  Surinder Singh ,  Abbas Sakarwala ,  Harmeet Sahni ,  Jian Cui

IPC: H04L12/931 ,  H04L12/741 ,  H04L12/28 ,  H04L12/773 ,  H04L12/721 ,  H04L12/933 ,  H04L12/947

CPC classification number: H04L49/40 ,  H04L12/2896 ,  H04L45/44 ,  H04L45/58 ,  H04L45/60 ,  H04L45/66 ,  H04L45/68 ,  H04L45/745 ,  H04L49/15 ,  H04L49/25 ,  H04L49/70

Abstract: A multi-router system is described in which hardware and software components of one or more standalone routers can be partitioned into multiple logical routers. The multiple logical routers are isolated from each other in terms of routing and forwarding functions yet allow network interfaces to be shared between the logical routers. Moreover, different logical routers can share network interfaces without impacting the ability of any of the logical routers to be independently scaled to meet the bandwidth demands of the customers serviced by the logical router.

公开(公告)号：US09571388B1

公开(公告)日：2017-02-14

申请号：US14614123

申请日：2015-02-04

Applicant: Juniper Networks, Inc.

Inventor： David Ward ,  Mu Lin ,  Sriram Raghunathan ,  Zi Zhou

IPC: H04L12/713 ,  H04L12/24 ,  H04L12/707

CPC classification number: H04L45/586 ,  G06F11/1438 ,  G06F11/1484 ,  H04L41/0668 ,  H04L45/22

Abstract: Techniques are described for separating control plane functions in a network device using virtual machines. The techniques include initializing multiple virtual machine instances in a control unit of a standalone router, and running different control processes for the router in each of the virtual machines. For example, in a root system domain (RSD)-protected system domain (PSD) system, a control unit of the standalone router may support a RSD virtual machine (VM) and one or more PSD VMs configured to form logical devices and execute logically separate control processes without requiring physically separate, hardware-independent routing engines to form the PSDs. Each of the RSD VM and PSD VMs includes a separate kernel, an operating system, and control processes for the logical device. When a software failure occurs in the PSD VM, the PSD VM may perform a software failover without affecting the operation of the RSD VM.

Abstract translation: 描述了使用虚拟机分离网络设备中的控制平面功能的技术。 这些技术包括在独立路由器的控制单元中初始化多个虚拟机实例，并为每个虚拟机中的路由器运行不同的控制过程。 例如，在根系统域（RSD）保护系统域（PSD）系统中，独立路由器的控制单元可以支持RSD虚拟机（VM）和一个或多个配置成形成逻辑设备并在逻辑上执行的PSD VM 单独的控制过程，而不需要物理上独立的，与硬件无关的路由引擎来形成PSD。 每个RSD VM和PSD VM都包含一个单独的内核，一个操作系统和该逻辑设备的控制进程。 当PSD VM发生软件故障时，PSD VM可能会执行软件故障转移，而不影响RSD VM的操作。

公开(公告)号：US08953439B1

公开(公告)日：2015-02-10

申请号：US13732114

申请日：2012-12-31

Applicant: Juniper Networks, Inc.

Inventor： Mu Lin ,  Sriram Raghunathan ,  David Ward ,  Zi Zhou

IPC: H04J3/14 ,  H04L12/24

CPC classification number: H04L45/586 ,  G06F11/1438 ,  G06F11/1484 ,  H04L41/0668 ,  H04L45/22

Abstract: Techniques are described for separating control plane functions in a network device using virtual machines. The techniques include initializing multiple virtual machine instances in a control unit of a standalone router, and running different control processes for the router in each of the virtual machines. For example, in a root system domain (RSD)-protected system domain (PSD) system, a control unit of the standalone router may support a RSD virtual machine (VM) and one or more PSD VMs configured to form logical devices and execute logically separate control processes without requiring physically separate, hardware-independent routing engines to form the PSDs. Each of the RSD VM and PSD VMs includes a separate kernel, an operating system, and control processes for the logical device. When a software failure occurs in the PSD VM, the PSD VM may perform a software failover without affecting the operation of the RSD VM.

Abstract translation: 描述了使用虚拟机分离网络设备中的控制平面功能的技术。 这些技术包括在独立路由器的控制单元中初始化多个虚拟机实例，并为每个虚拟机中的路由器运行不同的控制过程。 例如，在根系统域（RSD）保护系统域（PSD）系统中，独立路由器的控制单元可以支持RSD虚拟机（VM）和一个或多个配置成形成逻辑设备并在逻辑上执行的PSD VM 单独的控制过程，而不需要物理上独立的，与硬件无关的路由引擎来形成PSD。 每个RSD VM和PSD VM都包含一个单独的内核，一个操作系统和该逻辑设备的控制进程。 当PSD VM发生软件故障时，PSD VM可能会执行软件故障转移，而不影响RSD VM的操作。