公开(公告)号：US20140269254A1

公开(公告)日：2014-09-18

申请号：US13834111

申请日：2013-03-15

申请人： CISCO TECHNOLOGY, INC.

发明人： Gopakumar Choorakkot Edakkunni ,  Dezhong Cai ,  Saikat Ray

IPC分类号： H04L12/24

CPC分类号： H04L41/082 ,  G06F8/65 ,  G06F9/461 ,  G06F11/1438 ,  G06F11/2028 ,  G06F11/2033 ,  H04L41/0654 ,  H04L45/02 ,  H04L45/021 ,  H04L45/22 ,  H04L45/28 ,  H04L45/563 ,  H04L45/58 ,  H04L45/586 ,  H04L67/34 ,  H04L69/40

摘要： Embodiments herein generally provide techniques for upgrading a virtual router (VR) comprising first and second physical routers used to route data between network devices. Before upgrade the first physical router, one or more ports of the router are disabled which causes data paths previously flowing through the first router to flow through the second router. After performing the upgrade, the first router is rebooted and uses a unique router ID to discover the network topology of an external network coupled to the VR. Once the network topology is identified, the first router activates a routing application (e.g., a BGP routing application) which enables the router to process control plane traffic received from the second router. Once routing information is gathered, the first router is able to assume the responsibility of forwarding data packets in the network, thereby freeing the second router to be upgraded.

摘要翻译： 本文的实施方案通常提供用于升级包括用于在网络设备之间路由数据的第一和第二物理路由器的虚拟路由器（VR）的技术。 在升级第一个物理路由器之前，路由器的一个或多个端口被禁用，这导致先前流经第一路由器的数据路径流过第二路由器。 执行升级后，第一个路由器重新启动，并使用唯一的路由器ID来发现耦合到VR的外部网络的网络拓扑。 一旦网络拓扑被识别，第一路由器激活路由应用（例如，BGP路由应用），其使路由器能够处理从第二路由器接收到的控制平面业务。 一旦收到路由信息，第一台路由器就可以承担转发网络中数据包的责任，从而释放第二台路由器进行升级。

公开(公告)号：US09338055B2

公开(公告)日：2016-05-10

申请号：US13834111

申请日：2013-03-15

申请人： Cisco Technology, Inc.

发明人： Gopakumar Choorakkot Edakkunni ,  Dezhong Cai ,  Saikat Ray

IPC分类号： H04L12/24 ,  H04L12/713 ,  G06F9/445 ,  G06F11/14 ,  H04L12/775 ,  G06F9/46 ,  H04L12/755 ,  H04L12/703 ,  G06F11/20 ,  H04L29/08 ,  H04L12/751 ,  H04L29/14

CPC分类号： H04L41/082 ,  G06F8/65 ,  G06F9/461 ,  G06F11/1438 ,  G06F11/2028 ,  G06F11/2033 ,  H04L41/0654 ,  H04L45/02 ,  H04L45/021 ,  H04L45/22 ,  H04L45/28 ,  H04L45/563 ,  H04L45/58 ,  H04L45/586 ,  H04L67/34 ,  H04L69/40

摘要： Embodiments herein generally provide techniques for upgrading a virtual router (VR) comprising first and second physical routers used to route data between network devices. Before upgrade the first physical router, one or more ports of the router are disabled which causes data paths previously flowing through the first router to flow through the second router. After performing the upgrade, the first router is rebooted and uses a unique router ID to discover the network topology of an external network coupled to the VR. Once the network topology is identified, the first router activates a routing application (e.g., a BGP routing application) which enables the router to process control plane traffic received from the second router. Once routing information is gathered, the first router is able to assume the responsibility of forwarding data packets in the network, thereby freeing the second router to be upgraded.

摘要翻译： 本文的实施方案通常提供用于升级包括用于在网络设备之间路由数据的第一和第二物理路由器的虚拟路由器（VR）的技术。 在升级第一个物理路由器之前，路由器的一个或多个端口被禁用，这导致先前流经第一路由器的数据路径流过第二路由器。 执行升级后，第一个路由器重新启动，并使用唯一的路由器ID来发现耦合到VR的外部网络的网络拓扑。 一旦网络拓扑被识别，第一路由器激活路由应用（例如，BGP路由应用），其使路由器能够处理从第二路由器接收到的控制平面业务。 一旦收到路由信息，第一台路由器就可以承担转发网络中数据包的责任，从而释放第二台路由器进行升级。