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1. 发明公开

EP1202599A3 System and method for routing IP packets using an optical core 审中-公开
标题翻译：通过光学芯的装置的系统和方法Weglenken IP分组
公开(公告)号：EP1202599A3
公开(公告)日：2004-03-24
申请号：EP01309189.7
申请日：2001-10-30
申请人： Chiaro Networks Ltd.
发明人： Brewer, Tony M. , Blackmon, Harry C. , Dozier, Harold C , Elazar, Uri, , Kleiner, Jim , Liu, Bing , Mcdermott, Thomas C.III , Palmer, Gregory S. , Shaw, Keith W. , Shekel, Eyal , Visser, Lance Arnold , Wallach, Steven J. , Watson, Thomas Lee
IPC分类号： H04Q11/00
CPC分类号： H04L49/357 , H04L49/25 , H04L49/254 , H04L49/3027 , H04L49/3045 , H04L49/557 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0043 , H04Q2011/005 , H04Q2011/0058
摘要： An IP router with an optical core switches 40-byte packets at OC192 speed in 32 to 40 nanoseconds, with dynamic switch reconfiguration between consecutive packets. Optical switches have a 64 by 64 cross bar configuration. Embodiments are smoothly scalable from roughly ten interfaces up to 640 input/output ports. The system contains a central arbiter, which controls switch configurations, and incorporates redundancy throughout, including switches, arbiter, facility interface functionality, communication paths, control network, routing network, and master control processors. The preferred embodiment incorporates one-plus-one input protection. If there is a failure on any path, an alternate path reliably and seamlessly carries the traffic. All single point failures are confined to that part of the router system where they originate. One router need not communicate fault conditions to other routers to change their internal routing tables. Consequently, the network topology of a very large network remains static, since any errors in a router are confined within that router or between a pair of router systems having redundant interfaces. The method incorporates extensive internal error checking and correcting. The system is designed for no more than 50 milliseconds switchover time due to any single point failure. When a module fails, it can be hot-swapped with a new module without bringing down the system. High-speed optical interconnects, e.g. , between equipment racks, allow rack separations of up to 150 meters.

2. 发明公开

EP1365551A1 Highly-available OSPF routing protocol 审中-公开
标题翻译： HochverfügbaresOSPF Leitweglenkungsprotokoll
公开(公告)号：EP1365551A1
公开(公告)日：2003-11-26
申请号：EP03252645.1
申请日：2003-04-25
申请人： Chiaro Networks Ltd.
发明人： Folkes, Ronald Paul , Visser, Lance A. , Watson, Thomas Lee
IPC分类号： H04L12/56 , H04L29/14
CPC分类号： H04L45/28 , H04L45/02 , H04L45/586 , H04L45/60
摘要： In highly-available Open Shortest Path First (OSPF) routing in a network, the dynamic state of a backup OSPF instance 24 in a router is synchronized 222-225 with the dynamic state of an active OSPF instance 23 using explicit message transmission 224 from the active instance to the backup instance. After this, the dynamic state synchronization 225 of the backup OSPF instance 24 is maintained 226 using a combination of explicit message updates from the active OSPF instance together with a message flow-through mechanism. In the event of fail-over 301 of the active OSPF instance 23, then the router 20 recovers seamlessly without reconfiguring or interrupting traffic among peer routers in the network, by functionally substituting 301-310 the synchronized backup OSPF instance 24 for the active OSPF instance 23, such that the backup OSPF instance establishes 301-310 itself as the new active OSPF instance.
摘要翻译：在网络中的高度可用的开放最短路径优先（OSPF）路由中，路由器中的备份OSPF实例24的动态状态与活动OSPF实例23的动态状态同步222-225，使用来自活动实例到备份实例。此后，使用来自活动OSPF实例的显式消息更新与消息流通机制的组合来维护备份OSPF实例24的动态状态同步225。在故障切换301的活动OSPF实例23的情况下，路由器20无缝地恢复，而不会在网络中的对等路由器之间重新配置或中断流量，通过功能代替301-310同步备份OSPF实例24进行活动的OSPF实例如图23所示，备份OSPF实例自身建立了301-310作为新的活动OSPF实例。

3. 发明公开

EP1271861A3 System and method for router virtual networking 失效转让
标题翻译：路由器虚拟网络的系统和方法
公开(公告)号：EP1271861A3
公开(公告)日：2003-05-07
申请号：EP02254403.5
申请日：2002-06-24
申请人： Chiaro Networks Ltd.
发明人： Watson, Thomas Lee , Visser, Lance Arnold
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/586
摘要： A host router 10 is logically partitioned into virtual router domains 12, 14, 16 that manage independent processes 22, 23, 24, 25, 26 and routing application copies but share a common operating system 18, 20. Each v-net manages an independent set of sockets 32, 33, 34, 35 36 and host router interfaces 42, 43, 45, 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 46, 48, 50 used internally from the externally visible route tables and can avoid conflicts between internal and external IP addresses 13, 15, 17 that share the same identifier. For example a common FreeBSD operating system supports a dynamic routing protocol (DRP) application 23, 25. 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10在逻辑上被划分成管理独立进程22,23,24,25,26和路由应用拷贝但共享公共操作系统18,20的虚拟路由器域12,14,16。每个v-net管理独立进程套接字组32,33,34,35,36以及主机路由器接口42,43,45，每个接口一次仅与一个v-net相关联，但可重新分区期间可互换地重新分区的流量从接口移除。复制到每个v-net的全局变量的重复数组由宏引用访问。 v网络设施可以从外部可见路由表中分离内部使用的路由表46,48,50，并且可以避免共享相同标识符的内部和外部IP地址13,15,17之间的冲突。例如，普通的FreeBSD操作系统支持动态路由协议（DRP）应用程序23,25。每个v-net运行DRP软件的独立副本，并且在逻辑上是独立的。一个DRP副本中的故障不会对其他副本产生不利影响。

4. 发明授权

EP1271861B1 System and method for router virtual networking 失效转让
标题翻译：系统和方法，用于路由器虚拟网络操作
公开(公告)号：EP1271861B1
公开(公告)日：2005-09-14
申请号：EP02254403.5
申请日：2002-06-24
申请人： Chiaro Networks Ltd.
发明人： Watson, Thomas Lee , Visser, Lance Arnold
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/586

5. 发明公开

EP1271861A2 System and method for router virtual networking 失效转让
标题翻译：系统和方法路由器virtuelle Netzbetrieb
公开(公告)号：EP1271861A2
公开(公告)日：2003-01-02
申请号：EP02254403.5
申请日：2002-06-24
申请人： Chiaro Networks Ltd.
发明人： Watson, Thomas Lee , Visser, Lance Arnold
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/586
摘要： A host router 10 is logically partitioned into virtual router domains 12, 14, 16 that manage independent processes 22, 23, 24, 25, 26 and routing application copies but share a common operating system 18, 20. Each v-net manages an independent set of sockets 32, 33, 34, 35 36 and host router interfaces 42, 43, 45, 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 46, 48, 50 used internally from the externally visible route tables and can avoid conflicts between internal and external IP addresses 13, 15, 17 that share the same identifier. For example a common FreeBSD operating system supports a dynamic routing protocol (DRP) application 23, 25. 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10在逻辑上划分为虚拟路由器域12,14,16，其管理独立进程22,23,24,25,26并且路由应用副本，但是共享公共操作系统18,20。每个v-net管理独立一组套接字32,33,34,3536和主机路由器接口42,43,45，每次仅与一个v-net相关联，但在重新分区期间可以互换地重新分配的业务从接口移除。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46,48,50与外部可见的路由表分离，并且可以避免共享相同标识符的内部和外部IP地址13,15,17之间的冲突。例如，常见的FreeBSD操作系统支持动态路由协议（DRP）应用程序23,25。每个v-net运行DRP软件的独立副本，并且在逻辑上是独立的。一个DRP副本中的故障不会对其他副本产生不利影响。

6. 发明公开

EP1294145A3 System and method for router keep-alive control 审中-公开
标题翻译：系统和方法“保活”路由器的控制
公开(公告)号：EP1294145A3
公开(公告)日：2005-04-13
申请号：EP02256444.7
申请日：2002-09-17
申请人： Chiaro Networks Ltd.
发明人： Watson, Thomas Lee , Gillam, David A. , Visser, Lance Arnold
IPC分类号： H04L12/56
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 specified 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.

7. 发明公开

EP1294145A2 System and method for router keep-alive control 审中-公开
标题翻译：系统和Verfahren zur“keep-alive”Steuerung des路由器
公开(公告)号：EP1294145A2
公开(公告)日：2003-03-19
申请号：EP02256444.7
申请日：2002-09-17
申请人： Chiaro Networks Ltd.
发明人： Watson, Thomas Lee , Gillam, David A. , Visser, Lance Arnold
IPC分类号： H04L12/56
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 specified 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。保持活动控制提供在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套接字在超过超时间隔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。

8. 发明公开

EP1202599A2 System and method for routing IP packets using an optical core 审中-公开
标题翻译： System und Verfahren zum Weglenken IP Pakete mittels eines Optischen Kerns
公开(公告)号：EP1202599A2
公开(公告)日：2002-05-02
申请号：EP01309189.7
申请日：2001-10-30
申请人： Chiaro Networks Ltd.
发明人： Brewer, Tony M. , Blackmon, Harry C. , Dozier, Harold W. , Kleiner, Jim , McDermott, Thomas C.,III , Palmer, Gregory S. , Shaw, Keith W. , Wallach, Steven J. , Watson, Thomas Lee , Elazar, Uri , Liu, Bing , Shekel, Eyal , Visser, Lance Arnold
IPC分类号： H04Q11/00 , H04L12/56
CPC分类号： H04L49/357 , H04L49/25 , H04L49/254 , H04L49/3027 , H04L49/3045 , H04L49/557 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0043 , H04Q2011/005 , H04Q2011/0058
摘要： An IP router with an optical core switches 40-byte packets at OC192 speed in 32 to 40 nanoseconds, with dynamic switch reconfiguration between consecutive packets. Optical switches have a 64 by 64 cross bar configuration. Embodiments are smoothly scalable from roughly ten interfaces up to 640 input/output ports. The system contains a central arbiter, which controls switch configurations, and incorporates redundancy throughout, including switches, arbiter, facility interface functionality, communication paths, control network, routing network, and master control processors. The preferred embodiment incorporates one-plus-one input protection. If there is a failure on any path, an alternate path reliably and seamlessly carries the traffic. All single point failures are confined to that part of the router system where they originate. One router need not communicate fault conditions to other routers to change their internal routing tables. Consequently, the network topology of a very large network remains static, since any errors in a router are confined within that router or between a pair of router systems having redundant interfaces. The method incorporates extensive internal error checking and correcting. The system is designed for no more than 50 milliseconds switchover time due to any single point failure. When a module fails, it can be hot-swapped with a new module without bringing down the system. High-speed optical interconnects, e.g. , between equipment racks, allow rack separations of up to 150 meters.
摘要翻译：具有光纤核心的IP路由器以OC192速度在32至40纳秒内切换40字节数据包，并在连续数据包之间进行动态切换重新配置。光开关具有64×64横杆配置。实施例可以从大约十个接口到640个输入/输出端口平滑地扩展。该系统包含一个中央仲裁器，用于控制交换机配置，并整合冗余，包括交换机，仲裁器，设备接口功能，通信路径，控制网络，路由网络和主控制器。优选实施例包括一加一输入保护。如果任何路径出现故障，备用路径可靠，无缝地携带流量。所有单点故障仅限于路由器系统发起的部分。一个路由器不需要向其他路由器传送故障条件来更改其内部路由表。因此，非常大的网络的网络拓扑保持静态，因为路由器中的任何错误被限制在该路由器内或具有冗余接口的一对路由器系统之间。该方法包含广泛的内部错误检查和纠正。该系统由于任何单点故障而设计为不超过50毫秒的切换时间。当模块发生故障时，可以使用新的模块进行热插拔，而不会关闭系统。高速光学互连（例如设备机架之间）允许高达150米的机架分离。

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