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    • 45. 发明授权
    • Method and system for intelligently forwarding multicast packets
    • 智能转发组播报文的方法和系统
    • US09112715B2
    • 2015-08-18
    • US12765765
    • 2010-04-22
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • H04L12/18
    • H04L12/1886
    • A routing system utilizes a layer 2 switch interconnecting several routers to intelligently forward multicast packets throughout an interne exchange carrying multicast content. The layer 2 switch performs protocol snooping to extract a lookup key that is based on network layer protocol information. The lookup key is uniquely formulated to support either shared or explicit source distribution trees. The lookup key is used to query a forwarding memory that returns an outgoing port index. The outgoing port index points to one or more outgoing ports that are eligible to receive the multicast packet. The outgoing ports are also connected to the neighboring device(s) that are designated to receive the multicast packet. The routing system also supports real time maintenance and updating of the forwarding memory based on the periodic exchange of control messages. The routing system is configured to support PIM routers operating in PIM SM or PIM SSM modes. However, the routing system can also support other multicast protocols and/or standards.
    • 路由系统利用互连多个路由器的层2交换机在携带多播内容的内部交换机中智能地转发多播分组。 第二层交换机执行协议侦听,提取基于网络层协议信息的查找密钥。 查找密钥是独一无二的,用于支持共享或明确的源分发树。 查询键用于查询返回出站端口索引的转发内存。 出站端口索引指向一个或多个有资格接收组播数据包的输出端口。 输出端口也连接到被指定为接收多播分组的相邻设备。 路由系统还支持基于控制消息的周期性交换的转发存储器的实时维护和更新。 路由系统配置为支持以PIM SM或PIM SSM模式运行的PIM路由器。 然而,路由系统还可以支持其他多播协议和/或标准。
    • 49. 发明申请
    • MANAGING A CLUSTER OF SWITCHES USING MULTIPLE CONTROLLERS
    • 使用多个控制器管理一个开关组
    • US20130188514A1
    • 2013-07-25
    • US13557105
    • 2012-07-24
    • Nitin Jain
    • Nitin Jain
    • H04L12/24
    • H04L41/042H04L12/18H04L41/12H04L61/103
    • One embodiment of the present invention provides a computing system. The computing system includes a discovery module, a high-availability management module, and a controlling module. The discovery module determines local switch-specific information associated with a switch based on a discovery response packet. The high-availability management module determines remote switch-specific information about the same switch with respect to a remote computing system. The controlling module determines whether the computing system is to manage the switch based on a metric derived from the local and remote switch-specific information.
    • 本发明的一个实施例提供一种计算系统。 计算系统包括发现模块,高可用性管理模块和控制模块。 发现模块基于发现响应分组来确定与交换机相关联的本地交换机特定信息。 高可用性管理模块相对于远程计算系统确定关于相同交换机的远程交换机特定信息。 控制模块基于从本地和远程交换机特定信息导出的度量来确定计算系统是否要管理交换机。
    • 50. 发明申请
    • PRIORITY AWARE MAC FLOW CONTROL
    • 优先级MAC流量控制
    • US20120147747A1
    • 2012-06-14
    • US13161439
    • 2011-06-15
    • Nitin JainRajkumar Jalan
    • Nitin JainRajkumar Jalan
    • H04L12/24H04L12/26
    • H04L47/10G06F15/17368H04L12/2852H04L47/2433
    • Solutions are provided that allow a network device to apply flow control on the MAC layer while taking into account the priority of the frame of traffic. This may be accomplished by generating a frame indicating that traffic flow should be paused, while utilizing a new opcode value, or alternatively by utilizing a new type/length value (possibly combined with a new opcode value). A receiving device may then examine the fields of the frame to determine whether it should use priority-based pausing, and then examine other fields to determine which priority-levels to pause and for how long. This allows for improved efficiency in flow control on the MAC layer.
    • 提供的解决方案允许网络设备在考虑到流量帧的优先级的情况下对MAC层应用流量控制。 这可以通过生成指示业务流应该被暂停,同时利用新的操作码值,或者通过利用新的类型/长度值(可能与新的操作码值组合)来实现。 然后,接收设备可以检查帧的字段以确定它是否应该使用基于优先级的暂停,然后检查其他字段以确定要暂停的优先级等级以及多长时间。 这样可以提高MAC层的流量控制效率。