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    • 3. 发明申请
    • MULTI-HOP ERROR RECOVERY
    • 多机故障恢复
    • WO2014077905A1
    • 2014-05-22
    • PCT/US2013/046693
    • 2013-06-20
    • INTEL CORPORATIONPERLMAN, Radia
    • PERLMAN, Radia
    • H04W40/12
    • H04L45/26H04L12/4633H04L45/38
    • Methods, apparatus and network architectures relating to the use of a Hop-by-Hop packet forwarding technique using "stepping stone" switches. The network architectures include use of stepping stone switches interspersed with non-stepping stone switches such as conventional network switches comprising network elements such switches, routers, repeaters, etc. The stepping stone switches are configured to route packets as multiplexed flows along tunneled sub-paths between stepping stone switches in a hop-by-hop manner with error recovery, as opposed to conventional routing under which packets are routed from a source to a destination using an arbitrary path or along a (generally) lengthy flow-based path. Accordingly, packets from a source endpoint are routed to a destination endpoint via multiple sub-paths connecting pairs of stepping stone switches, with each sub-path traversing one or more conventional switches and constituting a logical Hop in the Hop-by-Hop route.
    • 与使用“踏脚石”开关的Hop-by-Hop分组转发技术相关的方法,装置和网络架构。 网络架构包括使用散布着诸如交换机,路由器,中继器等网络元件的常规网络交换机的非踏步石开关的踏脚石交换机。踏脚石交换机被配置为沿着隧道化子路径传送分组作为复用流 在传统的路由下,使用任意路径或沿着(通常为漫长的基于流的路径)将数据包从源路由到目的地而不是以错误恢复的逐跳方式进行。 因此,来自源端点的分组经由连接成对的踏脚石交换机的多个子路径被路由到目的地端点,每个子路径遍历一个或多个常规交换机,并且在Hop-by-Hop路由中构成逻辑Hop。
    • 5. 发明申请
    • NETWORK ROUTING PROTOCOL POWER SAVING METHOD FOR NETWORK ELEMENTS
    • 网络元件的网络路由协议节能方法
    • WO2014003534A1
    • 2014-01-03
    • PCT/MY2012/000192
    • 2012-06-29
    • INTEL CORPORATIONCHEW, Yen HsiangPERLMAN, Radia
    • CHEW, Yen HsiangPERLMAN, Radia
    • H04L12/28H04L29/06
    • G06F1/3234H04L12/28H04L41/0833H04L41/12H04L45/125H04L45/48H04L69/14Y02D50/30
    • Methods and apparatus relating to network routing protocols to support power savings in network elements. A most utilized link path network topology for a computer network is discovered using a routing protocol such as a Spanning Tree, link-state, or distance vector routing protocol. In view of the most utilized link path network topology, links are identified as candidates for power management under which a power state of the link and associated network ports are managed to save power under applicable link conditions, such as low utilization. Link power-state change conditions are detected, and in response a corresponding change to the power state of a link is effected by changing the power-state of the network ports at the ends of the link. Power state changes include putting a link into a reduced power state, taking a link offline, and powering a link back up.
    • 与网络路由协议相关的方法和设备,以支持网元的节电。 使用诸如生成树,链路状态或距离矢量路由协议的路由协议来发现用于计算机网络的最有效的链路路径网络拓扑。 鉴于最广泛使用的链路路径网络拓扑,链路被识别为用于电力管理的候选,在该电源管理下,链路和相关联的网络端口的电力状态被管理以在诸如低利用率的适用链路条件下节省功率。 检测到链路功率状态改变状况,并且作为响应,通过改变链路端的网络端口的功率状态来实现对链路的功率状态的相应改变。 电源状态改变包括将链路置于降低功率状态,使链路脱机,并为链路供电。
    • 6. 发明申请
    • NETWORK CONGESTION MANAGEMENT BY PACKET CIRCULATION
    • 通过分组流程进行网络约束管理
    • WO2014092780A1
    • 2014-06-19
    • PCT/US2013/046691
    • 2013-06-20
    • INTEL CORPORATIONNAOURI, YgdalPERLMAN, Radia
    • NAOURI, YgdalPERLMAN, Radia
    • H04L12/861
    • H04L47/122H04L47/10H04L49/351H04L49/50
    • Methods, apparatus, and networks configured to manage network congestion using packet recirculation. The networks employ network elements (e.g., Rbridges in Layer 2 networks and switches/routers in Layer 3 networks) that are configured to support multi-path forwarding under which packets addressed to the same destination may be routed via multiple paths to the destination. In response to network congestion conditions, such as lack of availability of a non-congested port via which a shortest path to the destination may be accessed, a packet may be routed backward toward a source node or forwarded toward a destination along a non-shortest path. The network elements may employ loopback buffers for looping packets back toward a source via the same link the packet is received on.
    • 配置为使用分组再循环来管理网络拥塞的方法,装置和网络。 网络采用被配置为支持多径转发的网络元件(例如,第2层网络中的R桥和第3层网络中的交换机/路由器),在该路径转发下,寻址到相同目的地的分组可以经由多条路径被路由到目的地。 响应于网络拥塞状况,诸如可能访问到目的地的最短路径的非拥塞端口的可用性不足,分组可以朝向源节点反向路由,或者沿着非最短路径朝向目的地转发 路径。 网络元件可以采用环回缓冲器,用于经由分组被接收的相同链路将分组循环回源。
    • 9. 发明申请
    • PATH DIVERSITY IN A CONNECTION-ORIENTED NETWORK
    • 一个面向连接的网络中的路径多样性
    • WO2013074075A1
    • 2013-05-23
    • PCT/US2011/060648
    • 2011-11-14
    • INTEL CORPORATIONPERLMAN, RadiaHUGGAHALLI, Ramakrishna
    • PERLMAN, RadiaHUGGAHALLI, Ramakrishna
    • H04L12/28H04L29/06H04L12/56
    • H04L45/745H04L45/10H04L45/50
    • In one embodiment this disclosure provides a network device that includes an input port configured to link to a first device to receive a packet from the first device, wherein the received packet having a first label encoded therein, the value of the first label is specific to the link between the network device and the first device; the input port having an input port identifier, the input port identifier and the first label form an input tuple; a plurality of output ports configured to link to respective ones of a plurality of second devices, each output port having a respective output port identifier; a forwarding table that includes at least one input tuple and a corresponding set of output tuples; wherein each output tuple comprises an output port identifier and a second label, the value of the second label is specific to the link between the network device and a respective one of the second plurality of devices; and routing circuitry configured to compare the input tuple of the received packet with at least one input tuple of the forwarding table, identify the corresponding set of output tuples, and select one output tuple from among the set of corresponding output tuples; the routing circuitry is also configured to replace the first label of the received packet with the second label and send the packet to the output port specified by the output port identifier in the selected output tuple.
    • 在一个实施例中,本公开提供一种网络设备,其包括被配置为链接到第一设备以从第一设备接收分组的输入端口,其中所接收的分组具有在其中编码的第一标签,第一标签的值是特定于 网络设备和第一设备之间的链路; 所述输入端口具有输入端口标识符,所述输入端口标识符和所述第一标签形成输入元组; 多个输出端口被配置为链接到多个第二设备中的相应的一个,每个输出端口具有相应的输出端口标识符; 转发表,其包括至少一个输入元组和相应的一组输出元组; 其中每个输出元组包括输出端口标识符和第二标签,所述第二标签的值是所述网络设备与所述第二多个设备中的相应一个设备之间的链路特有的; 以及路由电路,被配置为将所接收的分组的输入元组与所述转发表的至少一个输入元组进行比较,识别相应的输出元组集合,并从所述一组相应的输出元组中选择一个输出元组; 路由电路还被配置为用第二标签替换接收到的分组的第一标签,并将分组发送到由选择的输出元组中的输出端口标识符指定的输出端口。