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51. 发明授权

US07054926B1 Method and apparatus for managing network devices using a parsable string that conforms to a specified grammar 有权
标题翻译：使用符合指定语法的可解析字符串来管理网络设备的方法和装置
公开(公告)号：US07054926B1
公开(公告)日：2006-05-30
申请号：US10056309
申请日：2002-01-23
申请人： Vasmi M. Abidi , Hongchi Shih , Keith McCloghrie
发明人： Vasmi M. Abidi , Hongchi Shih , Keith McCloghrie
IPC分类号： G06F15/173
CPC分类号： H04L41/0213 , H04L67/125 , H04L69/06
摘要： A method and apparatus are disclosed for managing network devices using a parsable string that conforms to a specified grammar. The parsable string is used to represent locations of entities and is called an entity location specifier. The grammar may conform to Augmented Backus-Naur Form (ABNF). The entity location specifier comprises one or more location elements taken from a superset of location elements needed to specify the locations of entities for network device platforms. The superset of location elements can include both physical and logical entities. As a result, a network management application can retrieve a description of entities and elements contained in a network device using a single request, and can receive a single string value that is parsable to identify individual entities or elements in the device.
摘要翻译：公开了一种使用符合指定语法的可解析字符串来管理网络设备的方法和装置。可解析字符串用于表示实体的位置，称为实体位置说明符。语法可能符合增强的Backus-Naur表格（ABNF）。实体位置说明符包括从指定网络设备平台的实体位置所需的位置元素的超集中取出的一个或多个位置元素。位置元素的超集可以包括物理和逻辑实体。因此，网络管理应用程序可以使用单个请求检索包含在网络设备中的实体和元素的描述，并且可以接收可解析以识别设备中的各个实体或元件的单个字符串值。

52. 发明授权

US06996827B1 Method and system for setting expressions in network management notifications 有权
公开(公告)号：US06996827B1
公开(公告)日：2006-02-07
申请号：US10847949
申请日：2004-05-17
申请人： Keith McCloghrie , Ramanathan Kavasseri , Sandra Durham
发明人： Keith McCloghrie , Ramanathan Kavasseri , Sandra Durham
IPC分类号： G06F3/00 , G06F9/44 , G06F9/46 , G06F13/00
CPC分类号： H04L41/046 , G06F9/542 , H04L41/0213 , H04L41/06
摘要： A system for setting expressions at an agent including a processor configured to receive a SNMP message from a management station specifying objects for notifications supported by the agent and expressions based on the objects, set expressions for the notification, evaluate expressions when the notification containing the expression is generated, and send the notification to the management station.

53. 发明授权

US06885642B1 Method and apparatus for estimating delay and jitter between network routers coupled to background network 失效
标题翻译：用于估计耦合到背景网络的网络路由器之间的延迟和抖动的方法和装置
公开(公告)号：US06885642B1
公开(公告)日：2005-04-26
申请号：US09609302
申请日：2000-06-30
申请人： Bijendra N. Jain , Keith McCloghrie
发明人： Bijendra N. Jain , Keith McCloghrie
IPC分类号： H04L12/56
CPC分类号： H04L45/121
摘要： A delay measurement technique according to an embodiment according to the present invention is based on the precept, ascertained by the inventors, that a link between network nodes will often contribute to the delay encountered between several different pairs of network nodes. Such a technique identifies the path between each pair of nodes by a list of links that form the path. Paths that are orthogonal are treated as being necessary for describing the delays encountered between nodes, and, once the requisite set of orthogonal paths has been derived, all other paths can be described in terms of one or more of these orthogonal paths. Such a technique also lends itself to matrix representation of the paths, and the use of matrix manipulation techniques in deriving delay and jitter.
摘要翻译：根据本发明的实施例的延迟测量技术基于由发明人确定的规则，网络节点之间的链路通常将有助于在几个不同的网络节点对之间遇到的延迟。这种技术通过形成路径的链接列表来识别每对节点之间的路径。正交的路径被视为描述在节点之间遇到的延迟所必需的，并且一旦已经导出必需的正交路径集合，就可以用这些正交路径中的一个或多个来描述所有其他路径。这种技术也适用于路径的矩阵表示，以及使用矩阵操纵技术来推导延迟和抖动。

54. 发明申请

US20050060393A1 Method and apparatus for communicating COPS protocol policies to non-COPS-enabled network devices 有权
标题翻译：将COPS协议策略传送到不支持COPS的网络设备的方法和装置
公开(公告)号：US20050060393A1
公开(公告)日：2005-03-17
申请号：US10960162
申请日：2004-10-06
申请人： Itzhak Parnafes , Shai Mohaban , Keith McCloghrie
发明人： Itzhak Parnafes , Shai Mohaban , Keith McCloghrie
IPC分类号： G06F15/16 , G06F15/177 , H04L12/24 , H04L12/56
CPC分类号： H04L41/0893 , H04L41/0213
摘要： A method and apparatus for communicating a COPS protocol policy to a non-COPS-enabled network device is provided. A COPS proxy is connected between a policy server and a non-COPS-enabled network device. The policy server is configured to communicate COPS protocol policies to the COPS proxy, which is, in turn, configured to translate the COPS protocol policy into a policy that is in accordance with a policy protocol that the non-COPS-enabled network device can receive and correctly interpret (“non-COPS protocol”). The translation of the policy utilizes a mapping database that delineates predetermined relationships between COPS protocol policies and the non-COPS protocol policies. More specifically, the mapping database can include relationships between COPS protocol policy information base variables, network device roles and characteristics, and non-COPS protocol parameters and associated values. Further, the COPS proxy can be configured to detect and reconcile policy conflicts for one or more network devices.
摘要翻译：提供了一种用于将COPS协议策略传送到非COPS的网络设备的方法和装置。 COPS代理连接在策略服务器和启用非COPS的网络设备之间。策略服务器被配置为向COPS代理传送COPS协议策略，COPS代理又被配置为将COPS协议策略转换成符合非COPS使能的网络设备可以接收的策略协议的策略并正确解释（“非COPS协议”）。策略的翻译利用一个映射数据库，描绘COPS协议策略和非COPS协议策略之间的预定关系。更具体地说，映射数据库可以包括COPS协议策略信息基础变量，网络设备角色和特性之间的关系，以及非COPS协议参数和相关联的值。此外，可以配置COPS代理以检测和协调一个或多个网络设备的策略冲突。

55. 发明授权

US06678241B1 Fast convergence with topology switching 有权
标题翻译：与拓扑切换快速收敛
公开(公告)号：US06678241B1
公开(公告)日：2004-01-13
申请号：US09452344
申请日：1999-11-30
申请人： Silvano Gai , Keith McCloghrie , Merwyn B. Andrade
发明人： Silvano Gai , Keith McCloghrie , Merwyn B. Andrade
IPC分类号： G01R3108
CPC分类号： H04L12/462 , H04L12/4641 , H04L12/465 , H04L41/06 , H04L41/0663
摘要： A system for rapidly switching at least one virtual local area network (VLAN) from a first loop-free topology to a second loop-free topology in response to a failure within the first loop-free topology. Each VLAN has one “logical” VLAN which represents the network entities organized into the VLAN and a set of “physical” VLANs each having its own VLAN designation. For each physical VLAN, a different loop-free topology is defined, although only one physical VLAN is “active” at any given time. Messages associated with the logical VLAN are tagged with the designation of the currently active physical VLAN, and forwarded along its loop-free topology. Upon detecting a failure in the loop-free topology, the logical VLAN is rapidly switched to the loop-free topology defined by a second, back-up physical VLAN. Following the switch messages associated with the logical VLAN are tagged with the designation of this back-up VLAN and are forwarded along its loop-free topology.
摘要翻译：用于响应于第一无环路拓扑中的故障，将至少一个虚拟局域网（VLAN）从第一环无拓扑拓扑快速切换到第二无环路拓扑的系统。每个VLAN都有一个“逻辑”VLAN，它表示组织在VLAN中的网络实体和一组“物理”VLAN，每个VLAN都有自己的VLAN名称。对于每个物理VLAN，定义了不同的无环路拓扑，尽管在任何给定时间只有一个物理VLAN“活动”。与逻辑VLAN相关联的消息被标记为当前活动的物理VLAN的指定，并沿其无环路拓扑转发。检测到无环路拓扑故障时，逻辑VLAN将迅速切换到第二个备份物理VLAN所定义的无环路拓扑。跟随与逻辑VLAN相关联的交换机消息标记该备份VLAN的指定，并沿其无环路拓扑转发。

56. 发明授权

US06651096B1 Method and apparatus for organizing, storing and evaluating access control lists 有权
标题翻译：用于组织，存储和评估访问控制列表的方法和装置
公开(公告)号：US06651096B1
公开(公告)日：2003-11-18
申请号：US09295187
申请日：1999-04-20
申请人： Silvano Gai , Keith McCloghrie , Bhushan M. Kanekar
发明人： Silvano Gai , Keith McCloghrie , Bhushan M. Kanekar
IPC分类号： G06F15173
CPC分类号： H04L63/0263 , H04L63/101
摘要： The invention relates to a method and apparatus for efficiently organizing, storing and evaluating access control lists (ACLs) for use by an intermediate network device of a computer network. The intermediate network device includes an ACL converter which, in turn, includes a boolean transformation engine that is operatively coupled to a boolean manipulation engine. The boolean transformation engine is configured to access the ACLs in first format and to translate them into a first boolean representation, such as binary decision diagram (BDD) format. The boolean manipulation engine is configured to perform one or more operations on the ACLs specified for a given interface, including a merge operation, so as to generate a single, unified ACL for the given interface. In order to resolve possibly conflicting actions output by the multiple ACLs, the ACL converter may utilize one or more predefined conflict resolution tables during the merging process. The boolean transformation engine then translates the single, unified ACL into a second boolean representation, such as a sum of products (SOP) format, and stores the single, unified ACL in a preferred memory structure for subsequent evaluation by the intermediate device.
摘要翻译：本发明涉及一种有效地组织，存储和评估由计算机网络的中间网络设备使用的访问控制列表（ACL）的方法和装置。中间网络设备包括ACL转换器，ACL转换器又包括可操作地耦合到布尔操纵引擎的布尔变换引擎。布尔变换引擎被配置为以第一格式访问ACL并将其转换为第一布尔表示，例如二进制决策图（BDD）格式。布尔操作引擎被配置为对给定接口指定的ACL（包括合并操作）执行一个或多个操作，以便为给定接口生成单个统一的ACL。为了解决由多个ACL输出的可能的冲突动作，ACL转换器可以在合并过程期间利用一个或多个预定义的冲突解决表。然后，布尔变换引擎将单个统一的ACL转换为第二布尔表示，例如产品和（SOP）格式的总和，并将单个统一的ACL存储在优选的存储器结构中，以供中间设备进行后续评估。

57. 发明授权

US06535491B2 Method and apparatus for rapidly reconfiguring computer networks using a spanning tree algorithm 有权
标题翻译：使用生成树算法快速重新配置计算机网络的方法和装置
公开(公告)号：US06535491B2
公开(公告)日：2003-03-18
申请号：US09450891
申请日：1999-11-29
申请人： Silvano Gai , Keith McCloghrie , Dinesh G. Dutt
发明人： Silvano Gai , Keith McCloghrie , Dinesh G. Dutt
IPC分类号： H04L1228
CPC分类号： H04L45/48 , H04L12/462 , H04L41/083 , H04L45/02 , H04L45/28
摘要： A method that rapidly reconfigures a computer network having a plurality of devices executing the spanning tree algorithm. First, one or more devices are configured and arranged so that one port, providing connectivity to the root, is in the forwarding state and the remaining ports, providing connectivity to the root, are in the blocked state. Next, one or more of the blocked ports are designated as back-up ports. Upon detection of a failure at the active forwarding port, one of the back-up ports immediately transitions from blocked to forwarding, thereby becoming the new active port for the device. Following the transition to a new active port, dummy multicast messages are transmitted, each containing the source address of an entity directly coupled to the affected device or downstream thereof. By examining the dummy multicast messages, other devices in the network learn to use to the new forwarding port of the affected device. Rapid reconfiguration of the network is also provided upon detection of a new or repaired link or device representing a better path toward the root. The method is also compatible with networks supporting virtual local area network (VLAN) designations and allows load balancing among different VLANs.
摘要翻译：一种快速重新配置具有执行生成树算法的多个设备的计算机网络的方法。首先，配置和布置一个或多个设备，使得提供与根的连接的一个端口处于转发状态，并且提供与根的连接的其余端口处于阻塞状态。接下来，一个或多个阻塞端口被指定为备份端口。在主动转发端口检测到故障后，其中一个备份端口立即从阻塞转发到转发，从而成为设备的新的活动端口。在转换到新的活动端口之后，传输虚拟多播消息，每个消息包含直接耦合到受影响设备或其下游的实体的源地址。通过检查虚拟组播消息，网络中的其他设备学习使用受影响设备的新转发端口。在检测到新的或修复的链接或设备，表示朝向根的更好路径时，也提供网络的快速重新配置。该方法还与支持虚拟局域网（VLAN）的网络兼容，并允许不同VLAN之间的负载平衡。

58. 发明授权

US06388995B1 Method and apparatus for rapidly reconfiguring computers networks executing the spanning tree algorithm 有权
标题翻译：快速重新配置执行生成树算法的计算机网络的方法和装置
公开(公告)号：US06388995B1
公开(公告)日：2002-05-14
申请号：US09450066
申请日：1999-11-29
申请人： Silvano Gai , Keith McCloghrie , Dinesh G. Dutt
发明人： Silvano Gai , Keith McCloghrie , Dinesh G. Dutt
IPC分类号： G06F1516
CPC分类号： H04L45/48 , H04L12/462 , H04L41/083 , H04L45/02 , H04L45/28
摘要： A method that rapidly reconfigures a computer network having a plurality of devices executing the spanning tree algorithm. First, one or more devices are configured and arranged so that one port, providing connectivity to the root, is in the forwarding state and the remaining ports, providing connectivity to the root, are in the blocked state. Next, one or more of the blocked ports are designated as back-up ports. Upon detection of a failure at the active forwarding port, one of the back-up ports immediately transitions from blocked to forwarding, thereby becoming the new active port for the device. Following the transition to a new active port, dummy multicast messages are transmitted, each containing the source address of an entity directly coupled to the affected device or downstream thereof. By examining the dummy multicast messages, other devices in the network learn to use to the new forwarding port of the affected device. Rapid reconfiguration of the network is also provided upon detection of a new or repaired link or device representing a better path toward the root. The method is also compatible with networks supporting virtual local area network (VLAN) designations and allows load balancing among different VLANs.
摘要翻译：一种快速重新配置具有执行生成树算法的多个设备的计算机网络的方法。首先，配置和布置一个或多个设备，使得提供与根的连接的一个端口处于转发状态，并且提供与根的连接的其余端口处于阻塞状态。接下来，一个或多个阻塞端口被指定为备份端口。在主动转发端口检测到故障后，其中一个备份端口立即从阻塞转发到转发，从而成为设备的新的活动端口。在转换到新的活动端口之后，传输虚拟多播消息，每个消息包含直接耦合到受影响设备或其下游的实体的源地址。通过检查虚拟组播消息，网络中的其他设备学习使用受影响设备的新转发端口。在检测到新的或修复的链接或设备，表示朝向根的更好路径时，也提供网络的快速重新配置。该方法还与支持虚拟局域网（VLAN）的网络兼容，并允许不同VLAN之间的负载平衡。

59. 发明授权

US06286052B1 Method and apparatus for identifying network data traffic flows and for applying quality of service treatments to the flows 有权
标题翻译：用于识别网络数据业务流并用于向流量应用服务质量处理的方法和装置
公开(公告)号：US06286052B1
公开(公告)日：2001-09-04
申请号：US09206067
申请日：1998-12-04
申请人： Keith McCloghrie , Silvano Gai , Shai Mohaban
发明人： Keith McCloghrie , Silvano Gai , Shai Mohaban
IPC分类号： G06F1300
CPC分类号： H04L41/0893 , H04L41/5003 , H04L41/5045 , H04L41/5096 , H04L47/10 , H04L47/20 , H04L47/2408 , H04L47/2433 , H04L47/2441 , H04L47/2475 , H04L47/70 , H04L47/724 , H04L47/803 , H04L47/808
摘要： A system within a computer network identifies specific traffic flows originating from a given network entity and requests and applies appropriate policy rules or service treatments to the traffic flows. A network entity includes a flow declaration component that communicates with one or more application programs executing on the entity. The flow declaration component includes a message generator and an associated memory for storing one or more traffic flow data structures. For a given traffic flow, the application program issues one or more calls to the flow declaration component providing it with information identifying the traffic flows. The flow declaration component then opens a flow management session with a local policy enforcer that obtains policy rules or service treatments for the identified flow from a policy server and applies those rules or treatments to the specific traffic flows from the network entity.
摘要翻译：计算机网络内的系统识别源自给定网络实体的特定业务流，并向业务流请求并应用适当的策略规则或业务处理。网络实体包括与在该实体上执行的一个或多个应用程序进行通信的流声明组件。流声明组件包括用于存储一个或多个业务流数据结构的消息发生器和相关联的存储器。对于给定的流量，应用程序向流量声明组件发出一个或多个呼叫，为其提供标识流量的信息。流声明组件随后打开与本地策略执行器的流管理会话，该策略执行器从策略服务器获取所识别流的策略规则或服务处理，并将这些规则或处理应用于来自网络实体的特定业务流。

60. 发明授权

US6035105A Multiple VLAN architecture system 失效
标题翻译：多VLAN架构系统
公开(公告)号：US6035105A
公开(公告)日：2000-03-07
申请号：US582074
申请日：1996-01-02
申请人： Keith McCloghrie , Bernard R. James , Christopher Young , Norman W. Finn
发明人： Keith McCloghrie , Bernard R. James , Christopher Young , Norman W. Finn
IPC分类号： H04L12/46 , G06F13/40 , H04L12/28
CPC分类号： H04L12/4645 , H04L12/4666 , H04L12/4679
摘要： A system in which a single VLAN architecture spans multiple VLAN transport protocols and technologies, including a method and system in which multiple different VLANs may be combined in a single enterprise network. Each LAN-switch in the sytem identifies each frame with an identifier, and associates that identifier with particular VLAN identifiers for each type of VLAN technology. When a frame is bridged or routed from a first type of VLAN to a second type of VLAN, the first VLAN encapsulation is removed and the second VLAN encapsulation is added, with appropriate change in the VLAN identifier for the frame or packet. The identifier may also be implicit for the frame, such as when a particular set of sender's MAC addresses are identified with a particular VLAN. Individual VLANs, of whatever architecture, may be added, configured or reconfigured, modified, or deleted, using control tools associated with the multiple VLAN architecture system. Individual ports may be associated with particular VLANs, or may be designated "dynamic" so that frames or packets associated with those ports are associated with particular VLANs in response to source or destination addresses or other information.
摘要翻译：单个VLAN架构跨越多个VLAN传输协议和技术的系统，包括可以在单个企业网络中组合多个不同VLAN的方法和系统。系统中的每个LAN交换机用标识符标识每个帧，并将该标识符与每种类型的VLAN技术的特定VLAN标识相关联。当帧从第一种类型的VLAN桥接或路由到第二种类型的VLAN时，将删除第一个VLAN封装，并添加第二个VLAN封装，并适当更改帧或数据包的VLAN标识。该标识符对于该帧也可以是隐式的，诸如当用特定VLAN识别特定发送者的MAC地址集合时。可以使用与多VLAN架构系统相关联的控制工具，添加，配置或重新配置，修改或删除任何架构的各个VLAN。单个端口可以与特定VLAN相关联，或者可以被指定为“动态”，使得与这些端口相关联的帧或分组响应于源或目的地地址或其他信息与特定VLAN相关联。

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