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1. 发明授权

US07899930B1 Integration of an operative standalone router into a multi-chassis router 有权
标题翻译：将操作的独立路由器集成到多机架路由器中
公开(公告)号：US07899930B1
公开(公告)日：2011-03-01
申请号：US12028455
申请日：2008-02-08
申请人： Steve W. Turner , Sriram Raghunathan , Jeffrey M. DiNapoli , Umesh Krishnaswamy , Anurag P. Gupta
发明人： Steve W. Turner , Sriram Raghunathan , Jeffrey M. DiNapoli , Umesh Krishnaswamy , Anurag P. Gupta
IPC分类号： G06F15/173 , H04L12/28
CPC分类号： H04L49/45 , H04L49/10 , H04L49/65
摘要： A standalone router is integrated into a multi-chassis router. Integrating the standalone router into a multi-chassis router requires replacing switch cards in the standalone router with multi-chassis switch cards. The multi-chassis switch cards forward packets to a central switch card chassis for routing within the multi-chassis router. By incrementally replacing standalone switch cards with multi-chassis switch cards in the standalone router, packet forwarding performance is maintained during the integration.
摘要翻译：独立路由器集成到多机架路由器中。将独立路由器集成到多机架路由器中需要使用多机箱交换机卡替换独立路由器中的交换机卡。多机箱交换机将数据包转发到中央交换机卡机箱，以便在多机架路由器内进行路由。通过在独立路由器中逐渐更换多机箱交换机卡的独立交换机卡，在集成过程中保持数据包转发性能。

2. 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。

3. 发明授权

US07552262B1 Integration of an operative standalone router into a multi-chassis router 有权
标题翻译：将操作的独立路由器集成到多机架路由器中
公开(公告)号：US07552262B1
公开(公告)日：2009-06-23
申请号：US11217017
申请日：2005-08-31
申请人： Steve W. Turner , Sriram Raghunathan , Jeffrey M. DiNapoli , Umesh Krishnaswamy , Anurag P. Gupta
发明人： Steve W. Turner , Sriram Raghunathan , Jeffrey M. DiNapoli , Umesh Krishnaswamy , Anurag P. Gupta
IPC分类号： G06F15/173 , H05K7/10
CPC分类号： H04L49/45 , H04L49/10 , H04L49/65
摘要： A standalone router is integrated into a multi-chassis router. Integrating the standalone router into a multi-chassis router requires replacing switch cards in the standalone router with multi-chassis switch cards. The multi-chassis switch cards forward packets to a central switch card chassis for routing within the multi-chassis router. By incrementally replacing standalone switch cards with multi-chassis switch cards in the standalone router, packet forwarding performance is maintained during the integration.
摘要翻译：独立路由器集成到多机架路由器中。将独立路由器集成到多机架路由器中需要使用多机箱交换机卡替换独立路由器中的交换机卡。多机箱交换机将数据包转发到中央交换机卡机箱，以便在多机架路由器内进行路由。通过在独立路由器中逐渐更换多机箱交换机卡的独立交换机卡，在集成过程中保持数据包转发性能。

4. 发明申请

US20090037601A1 System and Method for Updating State Information in a Router 审中-公开
标题翻译：更新路由器状态信息的系统和方法
公开(公告)号：US20090037601A1
公开(公告)日：2009-02-05
申请号：US11833696
申请日：2007-08-03
申请人： Amit Jain , Steven Lin , Sriram Raghunathan , Sandeep Jain
发明人： Amit Jain , Steven Lin , Sriram Raghunathan , Sandeep Jain
IPC分类号： G06F15/173
CPC分类号： H04L12/66
摘要： Systems and methods consistent with the present invention enable routing table updates are performed by optimally utilizing the resources of a node without exceeding the resources of the node. Using feedback on the amount of resources available to the nodes, such as in terms of available memory, the node may make new connections before breaking old one where those updates will not exceed available resources. This is referred to as make-before-break. When not enough resources are available, the node will break old connections before making new ones. This is referred to as break-before-make. Unlike the strict make-before-break and break-before-make models, this “loose” make-before-break method considers the amount of available resources in view of the resources required to perform the routing table updates without a node failure. Routes may also be tagged to prioritize the addition of more important routes and the deletion of less significant routes. Methods and systems consistent with the present invention, therefore, provide a routing table update method with which routing table updates are achieved without crashing and at the same time minimizing black hole intervals.
摘要翻译：与本发明一致的系统和方法能够通过在不超过节点资源的情况下优化利用节点的资源来执行路由表更新。使用关于可用于节点的资源量的反馈，例如在可用内存方面，节点可以在破坏旧的连接之前进行新的连接，其中这些更新将不超过可用资源。这被称为前休假。当没有足够的资源可用时，节点将在创建新连接之前破坏旧连接。这被称为break-before-make。与严格的make-before-break和break-before-make模型不同，这种“松散”的make-before-break方法考虑到执行路由表更新而没有节点失败所需的资源的可用资源量。路由也可以被标记为优先考虑添加更重要的路由并删除较不重要的路由。因此，与本发明一致的方法和系统提供路由表更新方法，通过该路由表更新方法实现路由表更新，而不会崩溃，同时最小化黑洞间隔。

5. 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。

6. 发明授权

US07606241B1 Extending standalone router syntax to multi-chassis routers 有权
标题翻译：将独立路由器语法扩展到多机箱路由器
公开(公告)号：US07606241B1
公开(公告)日：2009-10-20
申请号：US11202982
申请日：2005-08-12
申请人： Sriram Raghunathan , Wing Eng , Karthikeyan Ramasamy
发明人： Sriram Raghunathan , Wing Eng , Karthikeyan Ramasamy
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L41/0803 , H04L41/0879 , H04L45/60
摘要： A multi-chassis router allows an administrator to deliver commands from a single interface. Additionally, the multi-chassis router presents a software image consistent with that of a standalone router and uses commands and configurations consistent with those used by a standalone router. The multi-chassis router automatically distributes, processes and responds to administrator commands a single unit, minimizing time required to administer the multi-chassis router. In effect, an administrator does not need to account for the multiple chassis configuration, and an administrator familiar with the control and commands for a standalone router can use that knowledge to effectively control the operation of the multi-chassis router.
摘要翻译：多机架式路由器允许管理员从单个接口传递命令。另外，多机箱路由器提供与独立路由器一致的软件映像，并使用与独立路由器所使用的一致的命令和配置。多机架路由器自动分配，处理和响应管理员命令一个单元，最大限度地减少管理多机架路由器所需的时间。实际上，管理员不需要考虑多机箱配置，熟悉独立路由器的控制和命令的管理员可以使用该知识来有效地控制多机架路由器的操作。

7. 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。

8. 发明授权

US08369345B1 Multi-router system having shared network interfaces 有权
标题翻译：具有共享网络接口的多路由器系统
公开(公告)号：US08369345B1
公开(公告)日：2013-02-05
申请号：US12618536
申请日：2009-11-13
申请人： Sriram Raghunathan , Yong Luo , Wai Leung Chan , Surinder Singh , Abbas Sakarwala , Harmeet Sahni , Jian Cui
发明人： Sriram Raghunathan , Yong Luo , Wai Leung Chan , Surinder Singh , Abbas Sakarwala , Harmeet Sahni , Jian Cui
IPC分类号： H04L12/28
CPC分类号： H04L49/40 , H04L12/2896 , H04L45/44 , H04L45/58 , H04L45/60 , H04L45/66 , H04L45/68 , H04L45/745 , H04L49/15 , H04L49/25 , H04L49/70
摘要： 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.
摘要翻译：描述了一种多路由器系统，其中一个或多个独立路由器的硬件和软件组件可以被划分成多个逻辑路由器。多个逻辑路由器在路由和转发功能方面彼此隔离，但允许在逻辑路由器之间共享网络接口。此外，不同的逻辑路由器可以共享网络接口，而不影响任何逻辑路由器独立地缩放以满足由逻辑路由器服务的客户的带宽需求的能力。

9. 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。

10. 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。

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