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1. 发明授权

US08238230B2 Detection of active nodes, safe node removal conditions, and cross-cabling conditions for maintenance operations within a multi-chassis routing matrix 有权
标题翻译：检测活动节点，安全节点删除条件以及多机架路由矩阵中维护操作的交叉布线条件
公开(公告)号：US08238230B2
公开(公告)日：2012-08-07
申请号：US12699565
申请日：2010-02-03
申请人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
发明人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
IPC分类号： H04L12/26
CPC分类号： H04L43/00
摘要： A system includes a first device connected to a second device The first device includes a second node connected to a first node and the second device via a link, and includes a backup second node connected to the first node and the second device via another link. The first node is configured to receive, via the link or the other link, a group of packets (i.e., “packets”), from the second device; display a first notification that the second node can be removed when the packets are received via only the other link; display a second notification indicating that the backup second node can be removed when the packets are received via only the link; and display a third notification indicating that neither the second node nor the backup second node can be removed when the packets are not received via only the link and via only the other link.
摘要翻译：系统包括连接到第二设备的第一设备。第一设备包括经由链路连接到第一节点和第二设备的第二节点，并且包括通过另一链路连接到第一节点和第二设备的备份第二节点。第一节点被配置为经由链路或其他链路从第二设备接收一组分组（即，“分组”）; 当仅通过其他链路接收分组时，显示可以去除第二节点的第一通知; 显示指示当仅通过链路接收分组时可以去除备用第二节点的第二通知; 并且显示第三通知，指示当仅通过链路仅通过其他链路仅接收分组时，不能去除第二节点和备用第二节点。

2. 发明授权

US08498200B2 Detection of active nodes, safe node removal conditions, and cross-cabling conditions for maintenance operations within a multi-chassis routing matrix 有权
标题翻译：检测活动节点，安全节点删除条件以及多机架路由矩阵中维护操作的交叉布线条件
公开(公告)号：US08498200B2
公开(公告)日：2013-07-30
申请号：US13466770
申请日：2012-05-08
申请人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
发明人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
IPC分类号： H04L12/26
CPC分类号： H04L43/00
摘要： A system includes a first device connected to a second device The first device includes a second node connected to a first node and the second device via a link, and includes a backup second node connected to the first node and the second device via another link. The first node is configured to receive, via the link or the other link, a group of packets (i.e., “packets”), from the second device; display a first notification that the second node can be removed when the packets are received via only the other link; display a second notification indicating that the backup second node can be removed when the packets are received via only the link; and display a third notification indicating that neither the second node nor the backup second node can be removed when the packets are not received via only the link and via only the other link.
摘要翻译：系统包括连接到第二设备的第一设备。第一设备包括经由链路连接到第一节点和第二设备的第二节点，并且包括通过另一链路连接到第一节点和第二设备的备份第二节点。第一节点被配置为经由链路或其他链路从第二设备接收一组分组（即，“分组”）; 当仅通过其他链路接收分组时，显示可以去除第二节点的第一通知; 显示指示当仅通过链路接收分组时可以去除备用第二节点的第二通知; 并且显示第三通知，指示当仅通过链路仅通过其他链路仅接收分组时，不能去除第二节点和备用第二节点。

3. 发明申请

US20110188387A1 DETECTION OF ACTIVE NODES, SAFE NODE REMOVAL CONDITIONS, AND CROSS-CABLING CONDITIONS FOR MAINTENANCE OPERATIONS WITHIN A MULTI-CHASSIS ROUTING MATRIX 有权
标题翻译：主动节点的检测，安全的节点移除条件以及多路由路由矩阵中的维护操作的交叉条件
公开(公告)号：US20110188387A1
公开(公告)日：2011-08-04
申请号：US12699565
申请日：2010-02-03
申请人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
发明人： Kaushik Das , Rajagopalan Sivaramakrishnan , Sameer Seth , Sriram Raghunathan
IPC分类号： H04L12/26
CPC分类号： H04L43/00
摘要： A system includes a first device connected to a second device The first device includes a second node connected to a first node and the second device via a link, and includes a backup second node connected to the first node and the second device via another link. The first node is configured to receive, via the link or the other link, a group of packets (i.e., “packets”), from the second device; display a first notification that the second node can be removed when the packets are received via only the other link; display a second notification indicating that the backup second node can be removed when the packets are received via only the link; and display a third notification indicating that neither the second node nor the backup second node can be removed when the packets are not received via only the link and via only the other link.
摘要翻译：系统包括连接到第二设备的第一设备。第一设备包括经由链路连接到第一节点和第二设备的第二节点，并且包括通过另一链路连接到第一节点和第二设备的备份第二节点。第一节点被配置为经由链路或其他链路从第二设备接收一组分组（即，“分组”）; 当仅通过其他链路接收分组时，显示可以去除第二节点的第一通知; 显示指示当仅通过链路接收分组时可以去除备用第二节点的第二通知; 并且显示第三通知，指示当仅通过链路仅通过其他链路仅接收分组时，不能去除第二节点和备用第二节点。

4. 发明申请

US20110013508A1 NON-STOP FORWARDING IN A MULTI-CHASSIS ROUTER 有权
标题翻译：在多重路由器路由器中不停止转发
公开(公告)号：US20110013508A1
公开(公告)日：2011-01-20
申请号：US12889209
申请日：2010-09-23
申请人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
发明人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
IPC分类号： H04L12/26
CPC分类号： H04L45/00 , H04L45/58 , H04L45/60
摘要： State information is synchronized between a plurality of routing engines in a multi-chassis router according to a synchronization gradient. An example multi-chassis router is described that includes a primary routing engine and a standby routing engine in each chassis. According to the synchronization gradient, the primary routing engine of a control node updates state information on the standby routing engine of the control node prior to updating the primary routing engines of the other chassis. The primary routing engines of the other chassis update state information in respective standby routing engines prior to updating state information in consumers. If a primary routing engine fails, the corresponding standby routing engine assumes control of the primary routing engine's duties. Upon assuming control, a standby routing engine resumes updating state information without having to resend state information or interrupt packet forwarding.
摘要翻译：根据同步梯度，状态信息在多机架路由器中的多个路由引擎之间同步。描述了一种示例性多机架路由器，其包括每个机架中的主路由引擎和备用路由引擎。根据同步梯度，控制节点的主路由引擎在更新另一机箱的主路由引擎之前更新控制节点的备用路由引擎上的状态信息。另一个机箱的主要路由引擎在更新消费者中的状态信息之前，在相应的备用路由引擎中更新状态信息。如果主路由引擎发生故障，则相应的备用路由引擎将控制主路由引擎的任务。在进行控制时，备用路由引擎恢复更新状态信息，而不必重新发送状态信息或中断分组转发。

5. 发明授权

US08483048B2 Non-stop forwarding in a multi-chassis router 有权
标题翻译：在多机箱路由器中不间断转发
公开(公告)号：US08483048B2
公开(公告)日：2013-07-09
申请号：US12889209
申请日：2010-09-23
申请人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
发明人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
IPC分类号： G06F11/00
CPC分类号： H04L45/00 , H04L45/58 , H04L45/60
摘要： State information is synchronized between a plurality of routing engines in a multi-chassis router according to a synchronization gradient. An example multi-chassis router is described that includes a primary routing engine and a standby routing engine in each chassis. According to the synchronization gradient, the primary routing engine of a control node updates state information on the standby routing engine of the control node prior to updating the primary routing engines of the other chassis. The primary routing engines of the other chassis update state information in respective standby routing engines prior to updating state information in consumers. If a primary routing engine fails, the corresponding standby routing engine assumes control of the primary routing engine's duties. Upon assuming control, a standby routing engine resumes updating state information without having to resend state information or interrupt packet forwarding.
摘要翻译：根据同步梯度，状态信息在多机架路由器中的多个路由引擎之间同步。描述了一种示例性多机架路由器，其包括每个机架中的主路由引擎和备用路由引擎。根据同步梯度，控制节点的主路由引擎在更新另一机箱的主路由引擎之前更新控制节点的备用路由引擎上的状态信息。另一个机箱的主要路由引擎在更新消费者中的状态信息之前，在相应的备用路由引擎中更新状态信息。如果主路由引擎发生故障，则相应的备用路由引擎将控制主路由引擎的任务。在进行控制时，备用路由引擎恢复更新状态信息，而不必重新发送状态信息或中断分组转发。

6. 发明授权

US07804769B1 Non-stop forwarding in a multi-chassis router 有权
标题翻译：在多机箱路由器中不间断转发
公开(公告)号：US07804769B1
公开(公告)日：2010-09-28
申请号：US11292204
申请日：2005-12-01
申请人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
发明人： Raj Tuplur , Bharani Chadalavada , Manoj Apte , Rajagopalan Sivaramakrishnan , Sriram Raghunathan , Umesh Krishnaswamy
IPC分类号： G06F11/00 , G06F15/173
CPC分类号： H04L45/00 , H04L45/58 , H04L45/60
摘要： State information is synchronized between a plurality of routing engines in a multi-chassis router according to a synchronization gradient. An example multi-chassis router is described that includes a primary routing engine and a standby routing engine in each chassis. According to the synchronization gradient, the primary routing engine of a control node updates state information on the standby routing engine of the control node prior to updating the primary routing engines of the other chassis. The primary routing engines of the other chassis update state information in respective standby routing engines prior to updating state information in consumers. If a primary routing engine fails, the corresponding standby routing engine assumes control of the primary routing engine's duties. Upon assuming control, a standby routing engine resumes updating state information without having to resend state information or interrupt packet forwarding.
摘要翻译：根据同步梯度，状态信息在多机架路由器中的多个路由引擎之间同步。描述了一种示例性多机架路由器，其包括每个机架中的主路由引擎和备用路由引擎。根据同步梯度，控制节点的主路由引擎在更新另一机箱的主路由引擎之前更新控制节点的备用路由引擎上的状态信息。另一个机箱的主要路由引擎在更新消费者中的状态信息之前，在相应的备用路由引擎中更新状态信息。如果主路由引擎发生故障，则相应的备用路由引擎将控制主路由引擎的任务。在进行控制时，备用路由引擎恢复更新状态信息，而不必重新发送状态信息或中断分组转发。

7. 发明授权

US08799511B1 Synchronizing state information between control units 有权
标题翻译：同步控制单元之间的状态信息
公开(公告)号：US08799511B1
公开(公告)日：2014-08-05
申请号：US12814198
申请日：2010-06-11
申请人： Raghunath Balakrishna , Shine-chu Wang , Umesh Krishnaswamy , Bharani Chadalavada , Sandeep Kumar , Raj Tuplur , Rajagopalan Sivaramakrishnan
发明人： Raghunath Balakrishna , Shine-chu Wang , Umesh Krishnaswamy , Bharani Chadalavada , Sandeep Kumar , Raj Tuplur , Rajagopalan Sivaramakrishnan
IPC分类号： G06F15/173
CPC分类号： G06F11/2097 , G06F11/2038 , H04L12/66
摘要： Techniques are described for synchronizing state information between a plurality of control units. A router, for example, is described that includes a primary control unit and a standby control unit. The primary control unit maintains router resources to ensure operation of the router. To ensure operation, the primary control unit receives state information from the router resources and maintains the state information for consumers, i.e. router resources that require or “consume” state information. Prior to updating the consumers with the state information, the primary control unit synchronizes the state information with the standby control unit. In the event the primary control unit fails, the standby control unit assumes control of the router resources. Upon assuming control, the standby control unit resumes updating the consumers with state information without having to “relearn” state information, e.g., by way of power cycling the router resources to a known state.
摘要翻译：描述了用于使多个控制单元之间的状态信息同步的技术。描述了路由器，其包括主控制单元和备用控制单元。主控单元维护路由器资源，确保路由器的运行。为了确保操作，主控制单元从路由器资源接收状态信息并维护消费者的状态信息，即需要或“消耗”状态信息的路由器资源。在使用状态信息更新消费者之前，主控制单元将状态信息与待机控制单元同步。在主控单元发生故障的情况下，备用控制单元承担路由器资源的控制。在进行控制时，备用控制单元通过状态信息恢复消费者的更新，而不必例如通过将路由器资源的功率循环到已知状态来“重新学习”状态信息。

8. 发明授权

US09253123B1 Methods and apparatus for load balancing VLAN traffic 有权
标题翻译：负载平衡VLAN流量的方法和装置
公开(公告)号：US09253123B1
公开(公告)日：2016-02-02
申请号：US13627622
申请日：2012-09-26
申请人： Pranay Podge , James Murphy , Abhijit Choudhury , Raghavendra Mallya , Sandeep Bajaj , Bharani Chadalavada , Rajagopalan Sivaramakrishnan
发明人： Pranay Podge , James Murphy , Abhijit Choudhury , Raghavendra Mallya , Sandeep Bajaj , Bharani Chadalavada , Rajagopalan Sivaramakrishnan
IPC分类号： H04L12/26 , H04L12/939 , H04L12/931 , H04L12/721
CPC分类号： H04L47/125 , H04L12/4641 , H04L12/5691 , H04L45/02 , H04L45/66 , H04L49/354 , H04L49/552
摘要： In some embodiments, an apparatus includes a first core device configured to be disposed within a network. The network has a set of access nodes and a second core device. The first core device is configured to receive a signal designating the first core device as a master device for a virtual group identifier such that the second core device is designated as a back-up device for that virtual group identifier.
摘要翻译：在一些实施例中，装置包括配置成布置在网络内的第一核心设备。该网络具有一组接入节点和第二核心设备。第一核心设备被配置为接收指定第一核心设备作为虚拟组标识符的主设备的信号，使得第二核心设备被指定为该虚拟组标识符的备份设备。

9. 发明授权

US07739403B1 Synchronizing state information between control units 有权
标题翻译：同步控制单元之间的状态信息
公开(公告)号：US07739403B1
公开(公告)日：2010-06-15
申请号：US10678280
申请日：2003-10-03
申请人： Raghunath Balakrishna , Shine-chu Wang , Umesh Krishnaswamy , Bharani Chadalavada , Sandeep Kumar , Raj Tuplur , Rajagopalan Sivaramakrishnan
发明人： Raghunath Balakrishna , Shine-chu Wang , Umesh Krishnaswamy , Bharani Chadalavada , Sandeep Kumar , Raj Tuplur , Rajagopalan Sivaramakrishnan
IPC分类号： G06F15/173 , G06F11/00
CPC分类号： G06F11/2097 , G06F11/2038 , H04L12/66
摘要： Techniques are described for synchronizing state information between a plurality of control units. A router, for example, is described that includes a primary control unit and a standby control unit. The primary control unit maintains router resources to ensure operation of the router. To ensure operation, the primary control unit receives state information from the router resources and maintains the state information for consumers, i.e. router resources that require or “consume” state information. Prior to updating the consumers with the state information, the primary control unit synchronizes the state information with the standby control unit. In the event the primary control unit fails, the standby control unit assumes control of the router resources. Upon assuming control, the standby control unit resumes updating the consumers with state information without having to “relearn” state information, e.g., by way of power cycling the router resources to a known state.
摘要翻译：描述了用于使多个控制单元之间的状态信息同步的技术。描述了路由器，其包括主控制单元和备用控制单元。主控单元维护路由器资源，确保路由器的运行。为了确保操作，主控制单元从路由器资源接收状态信息并维护消费者的状态信息，即需要或“消耗”状态信息的路由器资源。在使用状态信息更新消费者之前，主控制单元将状态信息与待机控制单元同步。在主控单元发生故障的情况下，备用控制单元承担路由器资源的控制。在进行控制时，备用控制单元通过状态信息恢复消费者的更新，而不必例如通过将路由器资源的功率循环到已知状态来“重新学习”状态信息。

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