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51. 发明授权

US06704278B1 Stateful failover of service managers 有权
标题翻译：服务管理员的状态故障切换
公开(公告)号：US06704278B1
公开(公告)日：2004-03-09
申请号：US09347123
申请日：1999-07-02
申请人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Bruce F. Wong
发明人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Bruce F. Wong
IPC分类号： H04L1226
CPC分类号： H04L29/12009 , H04L29/12783 , H04L45/00 , H04L45/566 , H04L45/586 , H04L61/35 , H04L69/40
摘要： A system and method are disclosed for providing a fault tolerant network service. A packet is received that corresponds to a flow from a forwarding agent at a primary service manager and instructions are determined at the primary service manager for handling packets corresponding to the flow. The instructions are sent to the forwarding agent and the instructions are stored at the primary service manager. A replication packet is sent to a backup service manager. The replication packet includes the instructions for handling packets corresponding to the flow.
摘要翻译：公开了一种用于提供容错网络服务的系统和方法。接收对应于来自主服务管理器的转发代理的流的分组，并且在主服务管理器处确定用于处理与流相对应的分组的指令。指令被发送到转发代理，指令存储在主服务管理器中。将复制数据包发送到备份服务管理器。复制分组包括用于处理与流相对应的分组的指令。

52. 发明授权

US06628654B1 Dispatching packets from a forwarding agent using tag switching 有权
标题翻译：使用标签交换从转发代理调度数据包
公开(公告)号：US06628654B1
公开(公告)日：2003-09-30
申请号：US09346634
申请日：1999-07-01
申请人： Mark Albert , Ravishankar Chandrasekaran , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
发明人： Mark Albert , Ravishankar Chandrasekaran , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
IPC分类号： H04L1228
CPC分类号： H04L29/12009 , H04L12/4633 , H04L29/06 , H04L29/12783 , H04L45/00 , H04L45/50 , H04L61/35 , H04L63/0218 , H04L63/0254 , H04L67/02 , H04L67/025 , H04L67/1002 , H04L69/329
摘要： A system and method are disclosed for providing a network service. The method includes storing at a forwarding agent a tag table. The tag table includes a list of tags and each tag specifies an interface and a destination. An instruction is received from a service manager specifying an overriding packet destination. The overriding packet destination is a destination that corresponds to a specific destination in a specific one of the tags. A packet is dispatched from the forwarding agent to the overriding packet destination using the specific one of the tags in response to the instruction from the service manager.
摘要翻译：公开了一种用于提供网络服务的系统和方法。该方法包括在转发代理处存储标签表。标签表包括标签列表，每个标签指定一个接口和一个目的地。从服务管理器接收到指定重写包目的地的指令。重写分组目的地是对应于特定一个标签中的特定目的地的目的地。响应于来自服务管理器的指令，使用特定的一个标签将分组从转发代理分派到重写分组目的地。

53. 发明授权

US06606316B1 Gathering network statistics in a distributed network service environment 有权
标题翻译：在分布式网络服务环境中收集网络统计信息
公开(公告)号：US06606316B1
公开(公告)日：2003-08-12
申请号：US09347428
申请日：1999-07-02
申请人： Mark Albert , Jacob Mark McGuire , Louis F. Menditto , Chris O'Rourke , Tzu-Ming Tsang
发明人： Mark Albert , Jacob Mark McGuire , Louis F. Menditto , Chris O'Rourke , Tzu-Ming Tsang
IPC分类号： H04L1228
CPC分类号： H04L47/32 , H04L41/046 , H04L43/06 , H04L43/062 , H04L47/10 , H04L47/31
摘要： A system and method are described for gathering statistics about packets. The method includes determining at a service manager statistics that are to be gathered for a flow and sending instructions to a forwarding agent from the service manager detailing how to gather statistics for the flow. The forwarding agent is implemented on a network device and the forwarding agent is operative to receive statistics gathering instructions for a flow from the service manager. A report is received at the service manager of statistics gathered at the forwarding agent according to the instructions sent by the service manager.
摘要翻译：描述了收集关于数据包的统计信息的系统和方法。该方法包括在服务管理器处确定要为流收集的统计信息，以及从服务管理器向转发代理发送指令，详细说明如何收集流的统计信息。转发代理在网络设备上实现，并且转发代理可操作以接收来自服务管理器的流的统计信息收集指令。根据服务经理发出的指示，在转发代理收集的统计信息中收到报告。

54. 发明申请

US20100274890A1 METHODS AND APPARATUS TO GET FEEDBACK INFORMATION IN VIRTUAL ENVIRONMENT FOR SERVER LOAD BALANCING 有权
标题翻译：在服务器负载平衡的虚拟环境中获得反馈信息的方法和设备
公开(公告)号：US20100274890A1
公开(公告)日：2010-10-28
申请号：US12431546
申请日：2009-04-28
申请人： Alpesh S. Patel , Chris O'Rourke , Udayakumar Srinivasan , Mark Albert
发明人： Alpesh S. Patel , Chris O'Rourke , Udayakumar Srinivasan , Mark Albert
IPC分类号： G06F9/455 , G06F15/173
CPC分类号： G06F9/4862 , G06F9/5083 , H04L43/08 , H04L47/125
摘要： Methods and apparatus for providing availability information of a virtual machine to a load balancer are disclosed. The availability information of the virtual machine may be normalized information from performance metrics of the virtual machine and performance metrics of the physical machine on which the virtual machine operates. The normalized availability of a virtual machine is provided by a feedback agent executing on the virtual machine. Alternatively, the normalized availability of a virtual machine is provided by a feedback agent executing on a hypervisor executing multiple virtual machines on a common set of physical computing hardware.
摘要翻译：公开了一种用于向负载平衡器提供虚拟机的可用性信息的方法和装置。虚拟机的可用性信息可以是虚拟机的性能度量和虚拟机在其上运行的物理机的性能指标的规范化信息。虚拟机的归一化可用性由在虚拟机上执行的反馈代理提供。或者，虚拟机的归一化可用性由在一组公共物理计算硬件上执行多个虚拟机的管理程序执行的反馈代理提供。

55. 发明申请

US20090193146A1 Utilizing Virtual Server Weight for Loadbalancing 审中-公开
标题翻译：利用虚拟服务器权重进行负载平衡
公开(公告)号：US20090193146A1
公开(公告)日：2009-07-30
申请号：US12019119
申请日：2008-01-24
申请人： Mark Albert , Chris O'Rourke , Senthil Kumar Pandian
发明人： Mark Albert , Chris O'Rourke , Senthil Kumar Pandian
IPC分类号： G06F15/173
CPC分类号： G06F9/5083
摘要： In one embodiment, a method includes receiving current weight data from one or more hosts associated with a virtual server and configuring a maximum weight of the virtual server. The method includes communicating the sum of the current weight data from all of the hosts to a global loadbalancer and communicating the maximum weight of the virtual server to the global loadbalancer.
摘要翻译：在一个实施例中，一种方法包括从与虚拟服务器相关联的一个或多个主机接收当前权重数据，并配置虚拟服务器的最大权重。该方法包括将来自所有主机的当前权重数据的和传送到全局负载均衡器，并将虚拟服务器的最大权重传送给全局负载均衡器。

56. 发明授权

US06891839B2 Distributing packets among multiple tiers of network appliances 有权
标题翻译：在多层网络设备之间分发数据包
公开(公告)号：US06891839B2
公开(公告)日：2005-05-10
申请号：US09771232
申请日：2001-01-26
申请人： Mark Albert , Robert Batz , Richard Gray , Jacob Mark McGuire , Louis Menditto , Chris O'Rourke , Pranav Tiwari , Tzu-Ming Tsang
发明人： Mark Albert , Robert Batz , Richard Gray , Jacob Mark McGuire , Louis Menditto , Chris O'Rourke , Pranav Tiwari , Tzu-Ming Tsang
IPC分类号： H04L12/46 , H04L12/56 , H04L29/06 , H04L29/08 , H04L29/12
CPC分类号： H04L29/12009 , H04L12/4633 , H04L29/06 , H04L29/12783 , H04L45/00 , H04L45/50 , H04L61/35 , H04L63/0218 , H04L63/0254 , H04L67/02 , H04L67/025 , H04L67/1002 , H04L69/329
摘要： A network is disclosed that includes a first tier of forwarding agents connected to a first tier of network devices. A second tier of forwarding agents is connected to a second tier of network devices. A service manager is configured to receive a packet from one of the forwarding agents; determine the tier of the forwarding agent; and send an instruction to the forwarding agent directing the forwarding agent to forward the packet to a network device connected to the tier of forwarding agents that includes the forwarding agent.
摘要翻译：公开了一种网络，其包括连接到第一层网络设备的第一层转发代理。第二层转发代理连接到第二层网络设备。服务管理器被配置为从其中一个转发代理接收分组; 确定转发代理的层次; 并向转发代理发送指令，指示转发代理将分组转发到连接到包括转发代理的转发代理层的网络设备。

57. 发明授权

US06742045B1 Handling packet fragments in a distributed network service environment 有权
标题翻译：在分布式网络服务环境中处理数据包片段
公开(公告)号：US06742045B1
公开(公告)日：2004-05-25
申请号：US09347122
申请日：1999-07-02
申请人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
发明人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
IPC分类号： G06F15173
CPC分类号： H04L67/2814 , H04L67/10 , H04L67/2819 , H04L69/16 , H04L69/166 , H04L69/329
摘要： A system and method for providing a network service is described. A fragment criteria is sent from a service manager to a forwarding agent that instructs the forwarding agent how to determine whether a received packet fragment at the forwarding agent matches the fragment criteria. A matching packet fragment is received from the forwarding agent at the fragment service manager. The fragment is assembled into a packet at the fragment service manager and in the event that the fragment completes the packet, a flow identifier specifying a flow is determined from the completed packet and completed packet is sent to a service manager that handles the flow specified in the flow identifier.
摘要翻译：描述了一种用于提供网络服务的系统和方法。片段标准从服务管理器发送到转发代理，指示转发代理如何确定转发代理上的接收到的分组片段是否与片段标准匹配。在片段服务管理器处从转发代理接收匹配的分组片段。该片段在分段服务管理器上组装成分组，并且在片段完成分组的情况下，从完成的分组确定指定流的流标识符，并且完成的分组被发送到服务管理器，该服务管理器处理流标识符。

58. 发明授权

US06687222B1 Backup service managers for providing reliable network services in a distributed environment 有权
标题翻译：备份服务管理器，用于在分布式环境中提供可靠的网络服务
公开(公告)号：US06687222B1
公开(公告)日：2004-02-03
申请号：US09347125
申请日：1999-07-02
申请人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang , Bruce F. Wong
发明人： Mark Albert , Richard A. Howes , James A. Jordan , Edward A. Kersey , William M. LeBlanc , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang , Bruce F. Wong
IPC分类号： H04L1228
CPC分类号： H04L29/06 , H04L47/10 , H04L47/125 , H04L67/1002 , H04L67/2814 , H04L69/329 , H04L69/40
摘要： A system and method are disclosed for providing a network service. A first criteria specifying a first set of flows from a first service manager is received at a forwarding agent. The first criteria specifies an expiration time interval. The first criteria is stored on the forwarding agent. A second criteria is received that specifies a second set of flows from a second service manager at the forwarding agent. The second set of flows includes flows that are in the first set of flows and the second criteria is designated as a lower priority criteria. The second criteria is stored on the forwarding agent. The first criteria is deleted from the forwarding agent upon the expiration of the expiration time interval. A packet is received that belongs to a flow that is included in the first set and the second set. It is determined that the packet matches the second set ant the packet is forwarded to the second service manager.
摘要翻译：公开了一种用于提供网络服务的系统和方法。在转发代理处接收从第一服务管理器指定第一组流的第一标准。第一个条件指定一个到期时间间隔。第一个条件存储在转发代理上。接收到第二标准，其指定来自第二服务管理器在转发代理处的第二组流。第二组流包括在第一组流中的流，并且第二标准被指定为较低优先级标准。第二个条件存储在转发代理上。在到期时间间隔到期时，第一个条件从转发代理中删除。接收到属于第一组和第二组中包含的流的分组。确定该分组与分组转发到第二服务管理器的第二组蚂蚁匹配。

59. 发明授权

US06606315B1 Synchronizing service instructions among forwarding agents using a service manager 有权
标题翻译：使用服务管理器同步转发代理之间的服务指令
公开(公告)号：US06606315B1
公开(公告)日：2003-08-12
申请号：US09347048
申请日：1999-07-02
申请人： Mark Albert , Richard A. Howes , James A. Jordan , Edward C. Kersey , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
发明人： Mark Albert , Richard A. Howes , James A. Jordan , Edward C. Kersey , Louis F. Menditto , Chris O'Rourke , Pranav Kumar Tiwari , Tzu-Ming Tsang
IPC分类号： H04L1266
CPC分类号： H04L45/22 , H04L45/00 , H04L45/38 , H04L49/25 , H04L49/602
摘要： A method of obtaining instructions for routing a packet is described that includes receiving a packet having a packet flow identifier that includes a packet source IP address, a packet destination IP address, a packet source port, and a packet destination port and checking whether the packet flow identifier matches a stored instruction. If the packet flow identifier does not match a stored instruction, whether the packet flow identifier matches a stored criteria is checked and if the packet matches a stored criteria, the packet is forwarded to a service manager.
摘要翻译：描述了一种获取用于路由分组的指令的方法，包括接收具有分组流标识符的分组，分组流标识符包括分组源IP地址，分组目的地IP地址，分组源端口和分组目的地端口，并检查分组流标识符与存储的指令匹配。如果分组流标识符与存储的指令不匹配，则检查分组流标识符是否匹配存储的标准，并且如果分组与存储的标准匹配，则分组被转发到服务管理器。

60. 发明授权

US09049015B2 Allowing TCP ACK to pass a gateway while queuing data for parsing 有权
标题翻译：允许TCP ACK在排队数据进行解析时通过网关
公开(公告)号：US09049015B2
公开(公告)日：2015-06-02
申请号：US11854299
申请日：2007-09-12
申请人： Humberto Tavares , Chris O'Rourke , Robert Batz , Franklin Jones
发明人： Humberto Tavares , Chris O'Rourke , Robert Batz , Franklin Jones
IPC分类号： H04L12/56 , H04L12/26 , H04L12/24 , H04L12/66 , H04L1/16 , H04L12/801 , H04L1/00
CPC分类号： H04L1/1607 , H04L47/10 , H04L2001/0092
摘要： In one embodiment, a method for providing an ACK packet while queuing data is provided. One or more packets in a series of packets may be received from a client at a gateway. The gateway determines that a packet in the series of packets has not been received. The one or more packets are then queued. The queued packets may have included an ACK for one or more previously sent packets. Thus, if the gateway had forwarded the one or more packets that are queued, then the ACK would have been received by the server. However, the one or more packets are queued and thus the ACK included in the packets is not sent with the queued packets. Even though the plurality of packets are queued, an acknowledgement packet is generated and then sent for the previously sent packets. The acknowledgement packet acknowledges to the server that the one or more previously sent packets were received by the client. The server may then continue transmitting packets to the client and knows it does not need to retransmit the one or more previously sent packets.
摘要翻译：在一个实施例中，提供了一种在排队数据期间提供ACK分组的方法。一系列分组中的一个或多个分组可以从网关的客户端接收。网关确定未收到一系列数据包中的数据包。然后将一个或多个数据包排队。排队的分组可以包括用于一个或多个先前发送的分组的ACK。因此，如果网关转发了排队的一个或多个数据包，则该服务器将接收该ACK。然而，一个或多个分组被排队，因此包中的ACK不与排队的分组一起发送。即使多个分组被排队，生成确认分组，然后发送给先前发送的分组。确认分组向服务器确认客户端接收到一个或多个先前发送的分组。然后，服务器可以继续向客户端发送分组，并且知道它不需要重传一个或多个先前发送的分组。

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