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    • 2. 发明授权
    • Method and apparatus for building and managing policies
    • 建立和管理政策的方法和设备
    • US08667556B2
    • 2014-03-04
    • US12123219
    • 2008-05-19
    • David ChangPrashant GandhiAbhijit PatraVijay Sagar
    • David ChangPrashant GandhiAbhijit PatraVijay Sagar
    • H04L29/06
    • H04L63/0263H04L63/20
    • Techniques for building and managing network policies for accessing resources of a datacenter are described herein. In one embodiment, events are captured within a network element pertaining to certain activities of accessing certain resources of a datacenter, wherein the network element operates as an application service gateway to the datacenter. A new rule/policy is provisioned based on attributes extracted from the captured events, where the attributes includes at least one of user attribute, environment attribute, and a resource attribute. A simulation is performed on the new rule/policy under a real time network traffic condition, generating a simulation result. The new rule/policy is committed if the simulation result satisfies a predetermined condition, wherein the new rule/policy is enforced within the network element to determine whether a particular client is eligible to access a particular resource of the datacenter. Other methods and apparatuses are also described.
    • 本文描述了用于构建和管理用于访问数据中心的资源的网络策略的技术。 在一个实施例中,事件被捕获在与访问数据中心的某些资源的某些活动有关的网络元件内,其中网络元件作为到数据中心的应用服务网关操作。 基于从捕获的事件提取的属性来设置新的规则/策略,其中属性包括用户属性,环境属性和资源属性中的至少一个。 在实时网络流量条件下对新规则/策略进行仿真,生成仿真结果。 如果模拟结果满足预定条件,则新规则/策略被提交,其中新的规则/策略在网络元素内被强制以确定特定客户端是否有资格访问数据中心的特定资源。 还描述了其它方法和装置。
    • 3. 发明申请
    • Network Accessibility to any Network Attached Device During Reboot and Power Loss
    • 重新启动和断电期间任何网络连接设备的网络可访问性
    • US20130326059A1
    • 2013-12-05
    • US13962388
    • 2013-08-08
    • Douglas A. GourlayPrashant GandhiMark McKeeOmar G. Abuabara
    • Douglas A. GourlayPrashant GandhiMark McKeeOmar G. Abuabara
    • H04L12/26
    • H04L43/04H04L12/10
    • A data communication network (DCN) having a plurality of network devices coupled to the DCN with at least one of the network devices having a “boot once” connectivity manager processor (CMP). The CMP receives its power over the DCN rather than from the power applied to the network devices. The CMP can execute special operating system code and maintain network connectivity even if the network device itself is powered off, is being booted or is otherwise non-functional. The CMP is also coupled to the network device's memory so that it may respond to out-of-band polling requests for device status information from network management tools. With CMP, network administrators can monitor the boot process of network devices, determine that a network device is non-functional due to power loss and can maintain an accurate inventory status of spare network devices that are stored un-powered in a spares closet.
    • 具有耦合到DCN的多个网络设备的数据通信网络(DCN),其中至少一个网络设备具有“启动一次”连接管理器处理器(CMP)。 CMP通过DCN而不是从施加到网络设备的电源接收电力。 即使网络设备本身断电,正在引导或以其他方式不起作用,CMP也可以执行特殊的操作系统代码并维护网络连接。 CMP还耦合到网络设备的存储器,使得其可以响应来自网络管理工具的设备状态信息的带外轮询请求。 通过CMP,网络管理员可以监控网络设备的引导过程,确定网络设备由于电源损耗而无法正常工作,并且可以保持存储在备用壁橱中未供电的备用网络设备的准确库存状态。
    • 9. 发明授权
    • Method and apparatus for applying quality of service to multicast streams transmitted in a cable network
    • 用于将有效网络中传输的多播流应用服务质量的方法和装置
    • US07408877B2
    • 2008-08-05
    • US11327006
    • 2006-01-06
    • Kartik S. ChandranPrashant Gandhi
    • Kartik S. ChandranPrashant Gandhi
    • H04L12/26
    • H04L12/18
    • A method and apparatus for providing quality of service parameters for transmissions of multicast streams on a cable network is provided. A cable network headend connects an external network to a hybrid fiber coax or cable network. The cable network headend maintains a table of cable modems with entries associating each cable modem with one or more quality of service parameters. Virtual cable modem entries are created for multicast streams when indications of quality of service for multicast streams are received by the cable network headend. Multicast packets arriving at the cable network headend are processed using the stored quality of service parameters for the corresponding multicast stream. The multicast packets may then be transmitted, queued, or dropped depending on the specified parameters and traffic shaping or policing algorithms.
    • 提供了一种用于提供有线网络上的多播流传输的服务质量参数的方法和装置。 有线网络前端将外部网络连接到混合光纤同轴电缆或有线网络。 有线网络前端维护电缆调制解调器表,其中条目将每个电缆调制解调器与一个或多个服务质量参数相关联。 当有线网络头端接收到组播流的服务质量的指示时,为多播流创建虚拟电缆调制解调器条目。 使用所存储的相应组播流的服务质量参数来处理到达有线网络头端的多播包。 然后可以根据指定的参数和流量整形或管理算法来传输,排队或丢弃多播分组。
    • 10. 发明授权
    • Methods and devices for flexible bandwidth allocation
    • 用于灵活带宽分配的方法和设备
    • US07327682B2
    • 2008-02-05
    • US10607711
    • 2003-06-27
    • Prashant GandhiRobert KlessigCedric Druce
    • Prashant GandhiRobert KlessigCedric Druce
    • G06F11/00H04L12/28
    • H04L47/10H04L47/20H04L47/215
    • Method and devices are provided for allocating network resources in a flexible manner. In some implementations, a customer's unused resources for a particular type of service are assigned to another type of service. In other implementations, a first customer's unused resources are assigned to a second customer, e.g., in exchange for a relatively lower service charge to the first customer. The unused bandwidth may be assigned on a hierarchical or a non-hierarchical basis. In preferred embodiments, resources are allocated using a token bucket methodology. Preferably, high-priority resources are not compromised by the allocation scheme. The discipline or manner in which resources or bandwidth are shared may be specified in a static fashion or information regarding the state of congestion in the network maybe used to generate a dynamic (time varying) specification.
    • 提供了以灵活的方式分配网络资源的方法和设备。 在一些实现中,用于特定类型的服务的客户未使用的资源被分配给另一类型的服务。 在其他实现中,第一客户未使用的资源被分配给第二客户,例如,以交换对第一客户的相对较低的服务费用。 未使用的带宽可以分层或非层次分配。 在优选实施例中,使用令牌桶方法分配资源。 优选地,高优先级资源不受分配方案的影响。 可以以静态方式指定资源或带宽共享的纪律或方式,或者可以使用关于网络中的拥塞状态的信息来生成动态(时变)规范。