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公开(公告)号：US07606177B1
公开(公告)日：2009-10-20
申请号：US10657499
申请日：2003-09-08
申请人： Umesh Mahajan , Ramana Mellacheruvu , Praveen Jain
发明人： Umesh Mahajan , Ramana Mellacheruvu , Praveen Jain
IPC分类号： H04L12/56
CPC分类号： H04L45/48 , H04L12/462 , H04L45/02 , H04L45/18
摘要： A method and apparatus facilitates and enhances the operation of the spanning tree protocol in bridged computer networks. An intermediate network device in accordance with the present invention includes an enhanced spanning tree engine that is configured to perform certain novel functions. First, the enhanced spanning tree engine is configured to identify and block ports at which messages are looped-back to the transmitting port, thereby avoiding the creation of network loops. In second aspect, the enhanced spanning tree engine rapidly transitions certain ports to a forwarding state to prevent associated applications from timing out and shutting down. Rather than moving the ports through blocking, listening and learning states before reaching the forwarding state, selected ports may be transitioned directly to the forwarding state.
摘要翻译： 一种方法和装置促进并增强了桥接计算机网络中的生成树协议的操作。 根据本发明的中间网络设备包括被配置为执行某些新颖功能的增强型生成树引擎。 首先，增强生成树引擎被配置为识别和阻止消息循环回发送端口的端口，从而避免网络环路的创建。 在第二方面，增强生成树引擎将某些端口快速转换到转发状态，以防止相关联的应用程序超时和关闭。 不是在达到转发状态之前通过阻塞，监听和学习状态移动端口，而是可以将所选择的端口直接转换到转发状态。
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32.发明授权公开(公告)号：US07586956B1
公开(公告)日：2009-09-08
申请号：US10982672
申请日：2004-11-05
IPC分类号： H04J3/12
CPC分类号： H04L67/26 , H04L41/0609 , H04L51/066 , H04L51/12 , H04L51/14
摘要： According to the present invention, methods and apparatus are provided for intelligently processing of event notification or callhome messages at a network switch. Alert groups are provided to allow select notification of entities based on the relevance or priority of an event. Destination profiles can be custom configured. A range of message formats are available for compatibility with services such as pager services, email, or XML-based automated parsing applications.
摘要翻译： 根据本发明，提供了用于在网络交换机处智能处理事件通知或呼叫信息的方法和装置。 提供警报组以允许基于事件的相关性或优先级的实体的选择通知。 目标配置文件可以自定义配置。 一系列消息格式可用于与诸如寻呼机服务，电子邮件或基于XML的自动解析应用程序之类的服务兼容。
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公开(公告)号：US07412557B2
公开(公告)日：2008-08-12
申请号：US11434471
申请日：2006-05-15
申请人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
发明人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
IPC分类号： G06F13/00
摘要： A network device is configured in a manner to prevent connectivity loops such as one way connectivity loops. A user configures a port of the network device to have an associated state. The state indicates that the port is for communication up the spanning tree towards a root network device, or down the spanning tree away from the root network device. The spanning tree protocol is then executed and determines a role for the port. The role determined by the spanning tree protocol is compared to the user selected state, and if there is an inconsistency, for example one that would indicate a one way connectivity loop, the port is blocked.
摘要翻译： 网络设备被配置为防止连接环路，例如单向连接环路。 用户将网络设备的端口配置为具有关联状态。 状态表示该端口用于向生成树向根网络设备进行通信，或者将该生成树从根网络设备远离。 然后执行生成树协议并确定端口的角色。 将生成树协议确定的角色与用户选择的状态进行比较，如果存在不一致，例如指示单向连接环路的端口，则该端口被阻止。
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公开(公告)号：US07061858B1
公开(公告)日：2006-06-13
申请号：US09714246
申请日：2000-11-16
申请人： Marco Di Benedetto , Mrinal Baruah , Chengelpet Veeravalli Ramesh , Alagu Annaamalai , Ramana Mellacheruvu , Sridhar K. Aswathnarayan , Hei Tao Fung , Umesh Mahajan
发明人： Marco Di Benedetto , Mrinal Baruah , Chengelpet Veeravalli Ramesh , Alagu Annaamalai , Ramana Mellacheruvu , Sridhar K. Aswathnarayan , Hei Tao Fung , Umesh Mahajan
IPC分类号： G01R31/08
CPC分类号： H04L45/00 , H04L41/00 , H04L45/48 , H04L45/586
摘要： A method and apparatus allows for continued operation of one or more applications running at a network device with reduced delay despite crashes or failures at that device. The network device includes two or more supervisor cards for running the applications and a plurality of line cards. According to the invention, one supervisor card is designated the active supervisor card and one supervisor card is designated the standby supervisor card. As changes in state and other operating conditions take place on the active supervisor events are generating for passing at least some of this information to the standby supervisor where it is stored. Following a crash or failure of the active supervisor card, the standby becomes the newly active supervisor card. The standby supervisor performs a consistency check with the line cards and resets those that fail the check. The standby supervisor also determines which data records and state information stored at the standby supervisor are valid, and begins running the applications loaded onto the device. Those data records and state information determined by the standby supervisor to be valid are utilized by the applications in continuing their operation, while invalid data records and state information are discarded.
摘要翻译： 一种方法和装置允许在网络设备上运行的一个或多个应用继续运行，尽管在该设备上发生故障或故障，但延迟延迟。 网络设备包括用于运行应用的两个或更多个管理卡和多个线卡。 根据本发明，一个管理卡被指定为主动管理卡，一个管理卡被指定为备用主管卡。 由于状态和其他操作条件的改变发生在活动主管上，所产生的事件将至少部分信息传送到备用主管，在该主管处存储。 在活动主管卡出现故障或故障后，备用电源将成为新建的主管卡。 备用主管使用线路卡进行一致性检查，并重新设置检查失败的那些。 备用主管还确定在备用主管上存储的哪些数据记录和状态信息有效，并开始运行加载到设备上的应用程序。 被备用主管确定为有效的那些数据记录和状态信息被应用程序用于继续操作，而无效数据记录和状态信息被丢弃。
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公开(公告)号：US06937576B1
公开(公告)日：2005-08-30
申请号：US09690619
申请日：2000-10-17
CPC分类号： H04L12/4641 , H04L12/462 , H04L12/4691 , H04L12/4695 , H04L45/02 , H04L45/48
摘要： A multiple instance spanning tree protocol (MI-STP) creates a plurality of active topologies (i.e., loop-free paths) within a computer network. These active topologies may be established through the exchange and processing of multiple instance spanning tree bridge protocol data unit messages (MI-STP BPDUs) by the intermediate network devices within the network. The active topologies are preferably created independently of any virtual local area network (VLAN) designations defined within the network. Once the active topologies are defined, each VLAN designation is then mapped to a single active topology, although multiple VLAN designations are preferably mapped to the same active topology to provide load balancing.
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公开(公告)号：US20120278458A1
公开(公告)日：2012-11-01
申请号：US13543671
申请日：2012-07-06
IPC分类号： G06F15/177
CPC分类号： H04L41/0654 , G06F11/1482 , G06F2201/815 , H04L69/32 , H04L69/40
摘要： In one embodiment, an indication of a fault condition is received relating to a first service running on a physical device in a computer network. The first service is associated with a first virtual device context defined on the physical device. Then, the first service is disabled without affecting operation of a second service on the physical device. The second service is associated with a second virtual device context defined on the physical device. In another embodiment, a first virtual device context is created on a physical device in a computer network. Then, a second virtual device context is created on the physical device. The first virtual device context may then be managed independently of the second virtual device context such that resources assigned to a virtual device context are managed without affecting management of another virtual device context.
摘要翻译： 在一个实施例中，接收与在计算机网络中的物理设备上运行的第一服务有关的故障状况的指示。 第一服务与在物理设备上定义的第一虚拟设备上下文相关联。 然后，第一服务被禁用，而不影响物理设备上的第二服务的操作。 第二服务与在物理设备上定义的第二虚拟设备上下文相关联。 在另一个实施例中，在计算机网络中的物理设备上创建第一虚拟设备上下文。 然后，在物理设备上创建第二虚拟设备上下文。 然后可以独立于第二虚拟设备上下文管理第一虚拟设备上下文，使得分配给虚拟设备上下文的资源被管理，而不影响另一虚拟设备上下文的管理。
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37.发明申请Apparatus, Methods and Articles of Manufacture for Computerized Transaction Execution and Processing 审中-公开电脑交易执行和处理的设备，方法和制造公开(公告)号：US20110270731A1
公开(公告)日：2011-11-03
申请号：US12972190
申请日：2010-12-17
申请人： Umesh Mahajan , Engin Tekkoc
发明人： Umesh Mahajan , Engin Tekkoc
IPC分类号： G06Q40/00
CPC分类号： G06Q40/04 , G06F3/0484 , G06Q30/0601
摘要： Apparatus, methods and articles of manufacture for n-tier transaction execution and processing are shown. The first layer comprises a presentation layer in the form of a user interface for entering instrument orders, modifying orders, and monitoring orders, instruments and markets. The second layer comprises an intermediate component layer for information transfer, and the third layer comprises an information source layer for feeding information to and accepting information from the first two layers.
摘要翻译： 显示了n层交易执行和处理的装置，方法和制造。 第一层包括用于输入仪器订单，修改订单以及监控订单，工具和市场的用户界面形式的表示层。 第二层包括用于信息传送的中间组件层，第三层包括用于向前两层提供信息并接收信息的信息源层。
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公开(公告)号：US07599284B1
公开(公告)日：2009-10-06
申请号：US11130286
申请日：2005-05-16
IPC分类号： G01R31/08 , H04L12/28 , G06F15/177
CPC分类号： H04L45/00 , H04L41/00 , H04L45/48 , H04L45/586
摘要： A method and apparatus for continuing the operation of a spanning tree protocol at a network device despite crashes or failures at that device is disclosed. The network device includes a plurality of line cards having ports for receiving and forwarding messages and a plurality of supervisor cards for processing at least some of those messages. Upon start-up, one of the supervisor cards is designated the active supervisor, while all other supervisor cards are designated standby supervisors. The active supervisor runs the spanning tree protocol (STP). The active supervisor informs the standby supervisors of the states of ports set by the STP. When a crash or failure occurs at the active supervisor, one of the standby supervisors is immediately designated to be the new active supervisor, and the new active supervisor uses the states of ports set by the original STP.
摘要翻译： 一种用于在网络设备上继续执行生成树协议的方法和装置，尽管公开了该设备上的故障或故障。 网络设备包括具有用于接收和转发消息的端口的多个线路卡和用于处理这些消息中的至少一些的多个管理卡。 启动时，其中一个主管卡被指定为主管，而所有其他主管卡都被指定为备用主管。 活动主管运行生成树协议（STP）。 主动主管向备用主管通知STP设置的端口状态。 当主动管理员发生故障或故障时，其中一个备用主管立即被指定为新的主动管理员，新的主管主管使用原始STP设置的端口状态。
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公开(公告)号：US20060206656A1
公开(公告)日：2006-09-14
申请号：US11434471
申请日：2006-05-15
申请人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
发明人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
IPC分类号： G06F13/00
摘要： A network device is configured in a manner to prevent connectivity loops such as one way connectivity loops. A user configures a port of the network device to have an associated state. The state indicates that the port is for communication up the spanning tree towards a root network device, or down the spanning tree away from the root network device. The spanning tree protocol is then executed and determines a role for the port. The role determined by the spanning tree protocol is compared to the user selected state, and if there is an inconsistency, for example one that would indicate a one way connectivity loop, the port is blocked.
摘要翻译： 网络设备被配置为防止连接环路，例如单向连接环路。 用户将网络设备的端口配置为具有关联状态。 状态表示该端口用于向生成树向根网络设备进行通信，或者将该生成树从根网络设备远离。 然后执行生成树协议并确定端口的角色。 将生成树协议确定的角色与用户选择的状态进行比较，如果存在不一致，例如指示单向连接环路的端口，则该端口被阻止。
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公开(公告)号：US20050259597A1
公开(公告)日：2005-11-24
申请号：US11185057
申请日：2005-07-20
CPC分类号： H04L12/4641 , H04L12/462 , H04L12/4691 , H04L12/4695 , H04L45/02 , H04L45/48
摘要： A multiple instance spanning tree protocol (MI-STP) creates a plurality of active topologies (i.e., loop-free paths) within a computer network. These active topologies may be established through the exchange and processing of multiple instance spanning tree bridge protocol data unit messages (MI-STP BPDUs) by the intermediate network devices within the network. The active topologies are preferably created independently of any virtual local area network (VLAN) designations defined within the network. Once the active topologies are defined, each VLAN designation is then mapped to a single active topology, although multiple VLAN designations are preferably mapped to the same active topology to provide load balancing.
摘要翻译： 多实例生成树协议（MI-STP）在计算机网络内创建多个活动拓扑（即，无环路径）。 这些活动拓扑可以通过网络中的中间网络设备交换和处理多个实例生成树桥协议数据单元消息（MI-STP BPDU）来建立。 活动拓扑优选地独立于在网络内定义的任何虚拟局域网（VLAN）指定而创建。 一旦定义了活动拓扑，则每个VLAN标识然后映射到单个活动拓扑，尽管多个VLAN名称最好映射到相同的活动拓扑以提供负载平衡。
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