专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08799419B1 Configuration update on virtual control plane 有权
标题翻译：虚拟控制平面上的配置更新
公开(公告)号：US08799419B1
公开(公告)日：2014-08-05
申请号：US12857207
申请日：2010-08-16
申请人： Mu Lin , Yanfang Zhang , Hui Qu , Zi Zhou
发明人： Mu Lin , Yanfang Zhang , Hui Qu , Zi Zhou
IPC分类号： G06F15/177
CPC分类号： H04L45/586 , G06F8/656 , G06F9/45558 , G06F2009/45562 , G06F2009/4557
摘要： The control plane of a network device comprises a plurality of software processes that manage routing control operations of the device. Through a hypervisor in the control plane, a managing virtual machine controls access to a first virtual machine running a first software system to control a routing communication session between the network device and other network devices. In response to an in-service software upgrade request, the managing virtual machine initializes a second virtual machine. On the second virtual machine, the second software system is loaded. State data maintained by the managing virtual machine can be transferred to the second virtual machine, and the second virtual machine takes control of the routing communication session. During the transfer of control from the first virtual machine to the second virtual machine, techniques of “non-stop forwarding” and “graceful restart” can be implemented to minimize the effect the switchover has on the network.
摘要翻译：网络设备的控制平面包括管理设备的路由控制操作的多个软件过程。通过控制平面中的管理程序，管理虚拟机控制对运行第一软件系统的第一虚拟机的访问，以控制网络设备和其他网络设备之间的路由通信会话。响应于在线软件升级请求，管理虚拟机初始化第二个虚拟机。在第二个虚拟机上，第二个软件系统被加载。可以将由管理虚拟机维护的状态数据传送到第二虚拟机，并且第二虚拟机接管路由通信会话的控制。在将控制从第一虚拟机传送到第二虚拟机时，可以实现“不间断转发”和“平滑重启”的技术，以最小化切换对网络的影响。

2. 发明授权

US08806266B1 High availability using full memory replication between virtual machine instances on a network device 有权
标题翻译：在网络设备上的虚拟机实例之间使用完全内存复制的高可用性
公开(公告)号：US08806266B1
公开(公告)日：2014-08-12
申请号：US13247571
申请日：2011-09-28
申请人： Hui Qu , Mu Lin , Shine-Chu Wang , Heng-Hui Debbie Chu , Leyi Zhang , Zi Zhou , Joel Obstfeld
发明人： Hui Qu , Mu Lin , Shine-Chu Wang , Heng-Hui Debbie Chu , Leyi Zhang , Zi Zhou , Joel Obstfeld
IPC分类号： G06F11/00
CPC分类号： G06F11/1484 , G06F11/1438
摘要： Techniques are described for providing high availability for a network device, e.g., a router, using full memory replication between a primary virtual machine (VM) and a standby VM running on the network device. In one example, the techniques provide hot-standby high availability for a router by initializing a primary VM and a standby VM on the router at the same time. In another example, the techniques provide high availability for the router by initializing a standby VM on the router upon detecting a failure of the primary VM. In both examples, the primary VM controls the routing functionality and periodically stores a full memory state. Upon a failure of the primary VM, a hypervisor may perform a full memory replication between the primary VM and the standby VM. The standby VM may then take control of the routing functionality at the last stored state of the memory.
摘要翻译：描述了用于为网络设备（例如路由器）提供高可用性的技术，其使用在主虚拟机（VM）和在网络设备上运行的备用虚拟机之间的完全存储器复制。在一个示例中，这些技术通过在路由器上同时初始化主VM和备用虚拟机来为路由器提供热备用高可用性。在另一个示例中，这些技术通过在检测到主VM的故障时在路由器上初始化备用虚拟机来为路由器提供高可用性。在这两个示例中，主虚拟机控制路由功能并定期存储完整的内存状态。在主虚拟机发生故障时，管理程序可能会在主虚拟机和备用虚拟机之间执行完整的内存复制。然后，备用VM可以在存储器的最后存储状态下控制路由功能。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式