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1. 发明授权

US06853617B2 System and method for TCP connection protection switching 有权
标题翻译： TCP连接保护切换的系统和方法
公开(公告)号：US06853617B2
公开(公告)日：2005-02-08
申请号：US09852223
申请日：2001-05-09
申请人： Thomas L. Watson , David D. Baukus , Ronald Paul Folkes , Lance Arnold Visser
发明人： Thomas L. Watson , David D. Baukus , Ronald Paul Folkes , Lance Arnold Visser
IPC分类号： G06F11/20 , H04L12/56 , H04L29/06 , G01R31/08
CPC分类号： H04L45/00 , G06F11/1675 , G06F11/2033 , G06F11/2038 , G06F11/2097 , H04L45/586 , H04L49/552 , H04L69/16 , H04L69/162 , H04L69/163
摘要： If an active router Master Control Processor (MCP) fails, a backup MCP switches over without interrupting peer network router connections, because all previously established connection parameters are replicated on both MCPs. Once the MCP programs line cards, the packet forwarding modules and embedded system function without further involvement of the MCP until the next programming update. Messages flow through the backup MCP and then through the active MCP, which outputs messages through the backup MCP. Thus the backup MCP captures state changes before and after the active MCP. Both MCPs maintain replicated queues in which they store replicated messages awaiting processing or retransmission. If acknowledgment of receiving a transmitted message is received from a destination peer router, that message is deleted from both MCPs. If acknowledgment is not received within a predetermined interval, the stored message is retransmitted. Message splicing prevents lost and partially transmitted messages during and after switchovers.
摘要翻译：如果主控路由器主控制器（MCP）发生故障，则备用MCP将切换而不会中断对等网络路由器连接，因为所有先前建立的连接参数都在两个MCP上复制。一旦MCP程序线路卡，分组转发模块和嵌入式系统功能，直到下一次编程更新才能进一步参与MCP。消息流经备份MCP，然后通过主动MCP，通过备份MCP输出消息。因此，备用MCP捕获活动MCP之前和之后的状态更改。两个MCP都维护其中存储复制的消息的复制队列，等待处理或重传。如果从目的地对等体路由器接收到接收到发送的消息的确认，则该消息从两个MCP中被删除。如果在预定间隔内未接收到确认，则重传所存储的消息。消息拼接防止在切换期间和之后丢失和部分传输的消息。

2. 发明授权

US08977753B1 System and method for router keep-alive control 有权
标题翻译：路由器保持控制的系统和方法
公开(公告)号：US08977753B1
公开(公告)日：2015-03-10
申请号：US12945128
申请日：2010-11-12
申请人： Thomas Lee Watson , David A. Gillam , Lance Arnold Visser
发明人： Thomas Lee Watson , David A. Gillam , Lance Arnold Visser
IPC分类号： G06F15/173 , G06F15/177 , G06F15/16
CPC分类号： H04L69/16 , H04L69/162
摘要： The real-time aspects of keep-alive generation are removed from the dynamic routing protocol (DRP) application and are embedded within a Unix-based operating system, which is programmed by DRP. A keep-alive control provides the ability to create a keep-alive message and a timeout interval on a TCP socket. Each socket can have an independent keep-alive message and timeout interval. A keep-alive message is sent whenever the TCP socket sends no normal user output for a duration exceeding the timeout interval. A timeout interval is normally specific in seconds and a keep-alive message is user definable and must not exceed a predetermined length in bytes. System calls are used to set the timeout interval and keep-alive message independently. Both a timeout and a keep-alive message must be set before the timeout becomes active.
摘要翻译：从动态路由协议（DRP）应用程序中删除了保持生成生成的实时方面，并且嵌入在由DRP编程的基于Unix的操作系统中。保持活动控件提供在TCP套接字上创建保持活动消息和超时间隔的功能。每个套接字可以具有独立的保持活动消息和超时间隔。只要TCP套接字在超时超时的时间内发送普通用户输出，就会发送一个保持活动消息。超时间隔通常以秒为单位，并且保持活动消息是用户可定义的，并且不得超过预定长度（以字节为单位）。系统调用用于独立设置超时间隔和保持活动消息。在超时激活之前，必须设置超时和保持活动消息。

3. 发明申请

US20090067423A1 System and Method for Service Assurance in IP Networks 有权
标题翻译： IP网络中服务保障的系统与方法
公开(公告)号：US20090067423A1
公开(公告)日：2009-03-12
申请号：US12209909
申请日：2008-09-12
申请人： Lance Arnold Visser
发明人： Lance Arnold Visser
IPC分类号： H04L12/56
CPC分类号： H04L47/10 , H04L47/122 , H04L2012/5636 , Y10S379/90
摘要： A system and method for providing service assurance in a data network is provided. Resource control points are positioned throughout a data network, such as an IP data network. The resource control points obtain network topology information and correlates that information with information associated with a particular service session. The resource control points utilize the correlated information to generate quality service records and to provide status information regarding the network topology and particular sessions. The resource control points may further retrieve link and utilization information to control sessions during periods of congestion.
摘要翻译：提供了一种用于在数据网络中提供服务保证的系统和方法。资源控制点位于诸如IP数据网络的数据网络中。资源控制点获取网络拓扑信息，并将该信息与与特定服务会话相关联的信息相关联。资源控制点利用相关信息生成优质服务记录，并提供有关网络拓扑和特定会话的状态信息。资源控制点可以进一步检索链路和利用信息以在拥塞期间控制会话。

4. 发明授权

US07483433B2 System and method for router data distribution 有权
标题翻译：路由器数据分发的系统和方法
公开(公告)号：US07483433B2
公开(公告)日：2009-01-27
申请号：US09954362
申请日：2001-09-17
申请人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
发明人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
IPC分类号： H04L12/28
CPC分类号： H04L47/15 , H04L1/1614 , H04L12/1868 , H04L45/02 , H04L45/021 , H04L45/42 , H04L47/12 , H04L47/22
摘要： Employing an asymmetric protocol, multiple sources reliably broadcast dynamically changing routing tables incrementally across multiple consumers from a single distributor. Each of multiple sources sends current tables to the distributor using a snapshot mechanism. Messages are buffered, segmented, paced by timers, and broadcast to the consumers repetitively at the distributor. Negative acknowledgments from the consumer request missing messages from the distributor after receipt of a keepalive message from the distributor. The distributor marks the missing messages and retransmits replacements from a history buffer only after firing of a resend timer. A unique Session ID included in all messages originating from each particular source facilitates reliable table distribution from multiple sources to multiple consumers via a single distributor.
摘要翻译：采用非对称协议，多个源可以从单个分发者可靠地广泛地跨多个消费者广播动态变化的路由表。每个多个源使用快照机制将当前表发送给分发者。消息被缓冲，分段，由定时器起搏，并在分销商处重复地向消费者广播。来自消费者的否定确认从收到来自经销商的保持性消息的消息中请求丢失来自经销商的消息。分配器标记丢失的消息，并且仅在触发重新发送定时器之后从历史缓冲区重新发送替换。来自每个特定源的所有消息中包含的唯一会话ID便于通过单个分发者将多个源到多个消费者的可靠表格分发。

5. 发明授权

US08780716B2 System and method for service assurance in IP networks 有权
标题翻译： IP网络中服务保证的系统和方法
公开(公告)号：US08780716B2
公开(公告)日：2014-07-15
申请号：US12209909
申请日：2008-09-12
申请人： Lance Arnold Visser
发明人： Lance Arnold Visser
IPC分类号： H04J1/16 , H04L12/56 , H04L12/70
CPC分类号： H04L47/10 , H04L47/122 , H04L2012/5636 , Y10S379/90
摘要： A system and method for providing service assurance in a data network is provided. Resource control points are positioned throughout a data network, such as an IP data network. The resource control points obtain network topology information and correlates that information with information associated with a particular service session. The resource control points utilize the correlated information to generate quality service records and to provide status information regarding the network topology and particular sessions. The resource control points may further retrieve link and utilization information to control sessions during periods of congestion.
摘要翻译：提供了一种用于在数据网络中提供服务保证的系统和方法。资源控制点位于诸如IP数据网络的数据网络中。资源控制点获取网络拓扑信息，并将该信息与与特定服务会话相关联的信息相关联。资源控制点利用相关信息生成优质服务记录，并提供有关网络拓扑和特定会话的状态信息。资源控制点可以进一步检索链路和利用信息以在拥塞期间控制会话。

6. 发明申请

US20090092135A1 SYSTEM AND METHOD FOR ROUTER DATA DISTRIBUTION 有权
标题翻译：路由器数据分发的系统和方法
公开(公告)号：US20090092135A1
公开(公告)日：2009-04-09
申请号：US12333029
申请日：2008-12-11
申请人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
发明人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
IPC分类号： H04L12/56
CPC分类号： H04L47/15 , H04L1/1614 , H04L12/1868 , H04L45/02 , H04L45/021 , H04L45/42 , H04L47/12 , H04L47/22
摘要： Employing an asymmetric protocol, multiple sources reliably broadcast dynamically changing routing tables incrementally across multiple consumers from a single distributor. Each of multiple sources send current tables to the distributor using a snapshot mechanism. Message are buffered, segmented, paced by timers, and broadcast to the consumers repetitively at the distributor. Negative acknowledgments from the consumer request missing messages from the distributor after receipt of a keepalive message from the distributor. The distributor marks the missing messages and retransmits replacements from a history buffer only after firing of a resend timer. A unique Session ID included in all messages originating from each particular source facilitates reliable table distribution from multiple sources to multiple consumers via a single distributor.
摘要翻译：采用非对称协议，多个源可以从单个分发者可靠地广泛地跨多个消费者广播动态变化的路由表。每个多个源使用快照机制将当前表发送给分发者。消息被缓冲，分段，由定时器起搏，并在分销商处重复地向消费者广播。来自消费者的否定确认从收到来自经销商的保持性信息后，向经销商请求丢失消息。分配器标记丢失的消息，并且仅在触发重新发送定时器之后从历史缓冲区重新发送替换。来自每个特定源的所有消息中包含的唯一会话ID便于通过单个分发者将多个源到多个消费者的可靠表格分发。

7. 发明授权

US08750166B2 Route topology discovery in data networks 有权
标题翻译：数据网络中的路由拓扑发现
公开(公告)号：US08750166B2
公开(公告)日：2014-06-10
申请号：US13242985
申请日：2011-09-23
申请人： Lance Arnold Visser
发明人： Lance Arnold Visser
IPC分类号： H04L12/28
CPC分类号： H04L41/12 , H04L45/02
摘要： A system and method for performing topology discovery in a data network is provided. Network elements utilizing a distance-vector protocol, such as EIGRP, advertises routes and metric information. A resource control point or other element analyzes the advertised routes and metrics and determines the nexthop, thereby providing a topology map of the network.
摘要翻译：提供了一种用于在数据网络中执行拓扑发现的系统和方法。使用距离矢量协议（如EIGRP）的网络元素通告路由和度量信息。资源控制点或其他元素分析通告的路由和度量，并确定下一跳，从而提供网络的拓扑图。

8. 发明授权

US08335219B2 System and method for router data distribution 有权
标题翻译：路由器数据分发的系统和方法
公开(公告)号：US08335219B2
公开(公告)日：2012-12-18
申请号：US12333029
申请日：2008-12-11
申请人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
发明人： Steve M. Simmons , Jim Kleiner , Qiang Li , Bing Liu , Lance Arnold Visser
IPC分类号： H04L12/28 , G06F15/173
CPC分类号： H04L47/15 , H04L1/1614 , H04L12/1868 , H04L45/02 , H04L45/021 , H04L45/42 , H04L47/12 , H04L47/22
摘要： Employing an asymmetric protocol, multiple sources reliably broadcast dynamically changing routing tables incrementally across multiple consumers from a single distributor. Each of multiple sources send current tables to the distributor using a snapshot mechanism. Message are buffered, segmented, paced by timers, and broadcast to the consumers repetitively at the distributor. Negative acknowledgments from the consumer request missing messages from the distributor after receipt of a keepalive message from the distributor. The distributor marks the missing messages and retransmits replacements from a history buffer only after firing of a resend timer. A unique Session ID included in all messages originating from each particular source facilitates reliable table distribution from multiple sources to multiple consumers via a single distributor.
摘要翻译：采用非对称协议，多个源可以从单个分发者可靠地广泛地跨多个消费者广播动态变化的路由表。每个多个源使用快照机制将当前表发送给分发者。消息被缓冲，分段，由定时器起搏，并在分销商处重复地向消费者广播。来自消费者的否定确认从收到来自经销商的保持性信息后，向经销商请求丢失消息。分配器标记丢失的消息，并且仅在触发重新发送定时器之后从历史缓冲区重新发送替换。来自每个特定源的所有消息中包含的唯一会话ID便于通过单个分发者将多个源到多个消费者的可靠表格分发。

9. 发明申请

US20100208738A1 SYSTEM AND METHOD FOR ROUTER VIRTUAL NETWORKING 有权
标题翻译：路由器虚拟网络的系统和方法
公开(公告)号：US20100208738A1
公开(公告)日：2010-08-19
申请号：US12767210
申请日：2010-04-26
申请人： Thomas Lee Watson , Lance Arnold Visser
发明人： Thomas Lee Watson , Lance Arnold Visser
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/586
摘要： A host router is logically partitioned into virtual router domains that manage independent processes and routing application copies but share a common operating system. Each v-net manages an independent set of sockets and host router interfaces, each associated with only one v-net at one time, but interchangeably repartitionable Traffic is removed from an interface during repartitioning. Duplicate arrays of global variables copied to each v-net are accessed by macro references. A v-net facility can separate route tables used internally from the externally visible route tables and can avoid conflicts between internal and external IP addresses that share the same identifier. For example a common FreeBSD operating system supports a dynamic routing protocol (DRP) application. Each v-net runs an independent copy of the DRP software and is logically independent. A failure in one DRP copy does not adversely affect other copies.
摘要翻译：主机路由器在逻辑上分为虚拟路由器域，管理独立进程和路由应用程序副本，但共享一个常见的操作系统。每个v-net管理一组独立的套接字和主机路由器接口，每个接口一次只与一个v-net相关联，但可重新分配的业务在重新分区期间从接口中移除。复制到每个v-net的全局变量的重复数组由宏引用访问。 v-net设施可以将内部使用的路由表与外部可见的路由表分开，并且可以避免共享相同标识符的内部和外部IP地址之间的冲突。例如，一个常见的FreeBSD操作系统支持动态路由协议（DRP）应用程序。每个v-net运行DRP软件的独立副本，在逻辑上是独立的。一个DRP副本中的故障不会对其他副本产生不利影响。

10. 发明申请

US20090185506A1 System and Method for Router Virtual Networking 有权
标题翻译：路由器虚拟网络的系统与方法
公开(公告)号：US20090185506A1
公开(公告)日：2009-07-23
申请号：US12210957
申请日：2008-09-15
申请人： Thomas Lee Watson , Lance Arnold Visser
发明人： Thomas Lee Watson , Lance Arnold Visser
IPC分类号： H04L12/28 , G06F15/177
CPC分类号： H04L45/00 , H04L45/586
摘要： A host router is logically partitioned into virtual router domains that manage independent processes and routing application copies but share a common operating system. Each v-net manages an independent set of sockets and host router interfaces, each associated with only one v-net at one time, but interchangeably repartitionable Traffic is removed from an interface during repartitioning. Duplicate arrays of global variables copied to each v-net are accessed by macro references. A v-net facility can separate route tables used internally from the externally visible route tables and can avoid conflicts between internal and external IP addresses that share the same identifier. For example a common FreeBSD operating system supports a dynamic routing protocol (DRP) application. Each v-net runs an independent copy of the DRP software and is logically independent. A failure in one DRP copy does not adversely affect other copies.
摘要翻译：主机路由器在逻辑上分为虚拟路由器域，管理独立进程和路由应用程序副本，但共享一个常见的操作系统。每个v-net管理一组独立的套接字和主机路由器接口，每个接口一次只与一个v-net相关联，但可重新分配的业务在重新分区期间从接口中移除。复制到每个v-net的全局变量的重复数组由宏引用访问。 v-net设施可以将内部使用的路由表与外部可见的路由表分开，并且可以避免共享相同标识符的内部和外部IP地址之间的冲突。例如，一个常见的FreeBSD操作系统支持动态路由协议（DRP）应用程序。每个v-net运行DRP软件的独立副本，在逻辑上是独立的。一个DRP副本中的故障不会对其他副本产生不利影响。

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