公开(公告)号：US07003692B1

公开(公告)日：2006-02-21

申请号：US10156563

申请日：2002-05-24

申请人： Donald Banks ,  Praveen Joshi ,  Seok Anthony Koh ,  Ajoy K. Thamattoor

发明人： Donald Banks ,  Praveen Joshi ,  Seok Anthony Koh ,  Ajoy K. Thamattoor

IPC分类号： G06F11/00

CPC分类号： G06F11/2097 ,  G06F11/2028 ,  G06F11/2038

摘要： A system and method for supporting a “hitless” switchover from an Active to a Standby processor utilizes several points of configuration synchronization. The startup and running configuration files are copied to the Standby processor and subsequent modifications to the Active configuration are synchronized to the Standby configuration.

摘要翻译： 用于支持从主动到待机处理器的“无中断”切换的系统和方法利用了多个配置同步点。 启动和运行的配置文件被复制到备用处理器，并且对Active配置的后续修改与备用配置同步。

公开(公告)号：US06658595B1

公开(公告)日：2003-12-02

申请号：US09422213

申请日：1999-10-19

申请人： Ajoy K. Thamattoor

发明人： Ajoy K. Thamattoor

IPC分类号： G06F1100

CPC分类号： G06F11/2038 ,  G06F11/0757 ,  G06F11/1471 ,  G06F11/2035

摘要： A system is provided for asymmetrically maintaining system operability that includes a first processing element and a second processing element coupled to the first processing element by a communication link. The first processing element is operable to perform at least one function. The second processing element is operable to perform at least one function of the first processing element in the event the first processing element fails, and further operable to expect and receive keepalive inquiries at an expected rate from the first processing element and to send responses in response to the inquiries to the first processing element. The second processing element is further operable to take remedial action after not receiving any inquiries within a first predetermined time period. In another embodiment of the present invention, the first processing element is operable to take remedial action after not receiving any response to any inquiries sent within a second predetermined time period, wherein the first predetermined time period is larger than the second predetermined time period. In other embodiments of the present invention, the first and second processing elements are routers.

摘要翻译： 提供一种用于不对称地维持系统可操作性的系统，其包括通过通信链路耦合到第一处理元件的第一处理元件和第二处理元件。 第一处理元件可操作以执行至少一个功能。 第二处理元件可操作以在第一处理元件发生故障的情况下执行第一处理元件的至少一个功能，并且还可操作以期望并以预期速率从第一处理元件接收保持性的查询，并响应于发送响应 查询到第一个处理元素。 第二处理元件还可操作以在第一预定时间段内没有接收到任何查询之后采取补救措施。 在本发明的另一个实施例中，第一处理元件可操作以在不接收对在第二预定时间段内发送的任何查询的任何响应之后采取补救措施，其中第一预定时间段大于第二预定时间段。 在本发明的其他实施例中，第一和第二处理元件是路由器。