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    • 14. 发明授权
    • Priority aware MAC flow control
    • 优先级感知MAC流量控制
    • US07990857B2
    • 2011-08-02
    • US12615142
    • 2009-11-09
    • Nitin JainRajkumar Jalan
    • Nitin JainRajkumar Jalan
    • H04L12/28H04L12/56G06F15/16
    • 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。
    • 16. 发明申请
    • METHOD AND SYSTEM FOR INTELLIGENTLY FORWARDING MULTICAST PACKETS
    • 用于智能转发多媒体分组的方法和系统
    • US20110064078A1
    • 2011-03-17
    • US12908758
    • 2010-10-20
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • Nitin JainLee ChenEarl FergusonMin Zhu
    • H04L12/56
    • H04L12/1886
    • A routing system utilizes a layer 2 switch interconnecting several routers to intelligently forward multicast packets throughout an internet 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交换机来在承载多播内容的互联网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。
    • 17. 发明申请
    • METHOD AND SYSTEM FOR INTELLIGENTLY FORWARDING MULTICAST PACKETS
    • 用于智能转发多媒体分组的方法和系统
    • US20100238927A1
    • 2010-09-23
    • US12765765
    • 2010-04-22
    • Nitin JAINLee ChenEarl FergusonMin Zhu
    • Nitin JAINLee ChenEarl FergusonMin Zhu
    • H04L12/56
    • 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。
    • 19. 发明授权
    • System and method for source IP anti-spoofing security
    • 源IP防欺骗安全的系统和方法
    • US07516487B1
    • 2009-04-07
    • US10850505
    • 2004-05-20
    • Ronald W. SzetoNitin JainRavindran SureshPhilip Kwan
    • Ronald W. SzetoNitin JainRavindran SureshPhilip Kwan
    • G06F7/04
    • H04L63/0263H04L63/101H04L63/1441H04L2463/146
    • A system and method that provides for using source IP addresses and MAC addresses in a network to provide security against attempts by users of the network to use false source IP addresses in data packets. The system and method provide for analyzing MAC addresses and source IP addresses at the datalink (layer 2) level, and to use the information derived from such analysis to block access through a port where a host device is using a false, or spoofed, source IP address in transmitted data packets. Further, the system and method provide for validating initially learned source IP addresses, and for determining whether the number of unsuccessful attempts to validate new source IP addresses exceeds a threshold level, and where the number does exceed the threshold number the system and method can provide for operation in a possible attack mode.
    • 提供在网络中使用源IP地址和MAC地址的系统和方法来提供安全性以防止网络用户在数据分组中使用虚拟源IP地址的尝试。 该系统和方法提供用于分析数据链路(层2)级别的MAC地址和源IP地址,并且使用从这种分析导出的信息阻止通过主机设备正在使用虚假或欺骗源的端口的访问 传输数据包中的IP地址。 此外,系统和方法提供用于验证初始学习的源IP地址,并且用于确定验证新的源IP地址的不成功尝试的次数是否超过阈值水平,并且其中该数量超过阈值数目,系统和方法可以提供 用于在可能的攻击模式下操作。
    • 20. 发明授权
    • Apparatus, system, and method for measuring power delivered to a load
    • 用于测量输送到负载的功率的装置,系统和方法
    • US07392021B2
    • 2008-06-24
    • US11196371
    • 2005-08-03
    • Nitin JainRajanishAngelos Alexanian
    • Nitin JainRajanishAngelos Alexanian
    • H03C1/62H04B1/04G01R19/00H03G3/00
    • H03F3/189H03G3/3042H04B2001/0416
    • Apparatus, system, and method including a circuit including an element having an electrical impedance, an input node to receive a signal, and an output node to couple to a load; a sensing circuit coupled to the input node and the output node to sense a differential voltage between the input and output nodes and to sense a detected voltage at the input node; and a multiplier circuit to receive the differential voltage and to receive the detected voltage. The multiplier circuit provides an output voltage proportional to the instantaneous power delivered to the load based on the differential voltage, the detected voltage, and the impedance of the element. A system may further include a radio frequency (RF) power amplifier (PA). A method may further include controlling a gain of the RF PA to maintain the power delivered to the load at a predetermined level based on the output voltage of the multiplier circuit.
    • 装置,系统和方法包括包括具有电阻抗的元件的电路,用于接收信号的输入节点和耦合到负载的输出节点; 感测电路,其耦合到所述输入节点和所述输出节点,以感测所述输入和输出节点之间的差分电压并且感测所述输入节点处的检测到的电压; 以及用于接收差分电压并接收检测到的电压的乘法器电路。 乘法器电路提供与基于差分电压,检测电压和元件的阻抗而传递给负载的瞬时功率成比例的输出电压。 系统还可以包括射频(RF)功率放大器(PA)。 方法还可以包括控制RF PA的增益,以基于乘法器电路的输出电压将输送到负载的功率保持在预定电平。