公开(公告)号：US20130083797A9

公开(公告)日：2013-04-04

申请号：US12900435

申请日：2010-10-07

申请人： Janardhanan P. Narasimhan

发明人： Janardhanan P. Narasimhan

IPC分类号： H04L12/56

CPC分类号： H04L45/245 ,  H04L47/125 ,  H04L49/30 ,  H04L49/35 ,  H04L49/354 ,  Y02D50/30

摘要： A network switch suitable for receiving packets of information from and the packets of information to a communications network includes a plurality of physical ports, packet processing functionality and memory. The packet processing functionality operates on information stored in memory to determine the LAG, from among two or more LAGs, over which a packet received by the switch should be correctly forwarded. The switch memory stores a plurality of LAG tables, each one of which can include one or more entries comprising a physical port number and a packet parameter that are used by the packet processing functionality to determinately identify the correct LAG over which to forward a packet.

公开(公告)号：US20120314581A1

公开(公告)日：2012-12-13

申请号：US13157381

申请日：2011-06-10

申请人： MURALIKRISHNAN RAJAMANICKAM ,  Sampathkumar Rajamanickam

发明人： MURALIKRISHNAN RAJAMANICKAM ,  Sampathkumar Rajamanickam

IPC分类号： H04L12/24

CPC分类号： H04L41/0826 ,  H04L45/245 ,  H04L49/45 ,  Y02D50/30

摘要： A stacked switch includes two or more individual network switches connected to each other in a ring or daisy chain topology over stacking links, and at least one port on two or more of the individual switches comprising the stacked switch is a member of a LAG configured on the stacked switch. Each of the individual switches comprising the stacked switch include control plane and data plane functionality that operates to maintain switching tables and to process network data ingressing to the switch to determine how to forward the network data through the switch to an egress point. The control functionality included in each of the switches comprising the stacked switch also includes an enhanced ECMP functionality that operates to optimize the use of stacking link bandwidth on the stacking links connecting the two or more individual switches to each other.

摘要翻译： 堆叠式交换机包括两个或更多个在堆叠链路上以环形或菊花链方式彼此连接的单独网络交换机，并且包括堆叠交换机的两个或多个单独交换机中的至少一个端口是配置在 堆叠开关。 包括堆叠交换机的每个单独交换机包括控制平面和数据平面功能，其操作以维护交换表并处理网络数据进入交换机，以确定如何通过交换机将网络数据转发到出口点。 包括在包括堆叠交换机的每个交换机中的控制功能还包括增强的ECMP功能，其操作以优化在将两个或多个单独交换机彼此连接的堆叠链路上的堆叠链路带宽的使用。

公开(公告)号：US08026450B2

公开(公告)日：2011-09-27

申请号：US11978808

申请日：2007-10-30

申请人： Joel R. Goergen

发明人： Joel R. Goergen

IPC分类号： H05K1/00

CPC分类号： H05K3/4688 ,  H05K1/0218 ,  H05K1/024 ,  H05K1/0243 ,  H05K1/0271 ,  H05K1/116 ,  H05K3/382 ,  H05K3/429 ,  H05K3/4626 ,  H05K3/4641 ,  H05K2201/0209 ,  H05K2201/044 ,  H05K2201/0723 ,  H05K2201/09236 ,  H05K2201/093 ,  H05K2201/09309 ,  H05K2201/09318 ,  H05K2201/09327 ,  H05K2201/09354 ,  H05K2201/09381 ,  H05K2201/09454 ,  H05K2201/09636 ,  H05K2201/09663 ,  H05K2201/09718 ,  H05K2201/09781 ,  H05K2203/061 ,  Y10T29/49117 ,  Y10T29/49128 ,  Y10T29/49155 ,  Y10T29/49156 ,  Y10T29/49162 ,  Y10T29/49163 ,  Y10T29/49165

摘要： A circuit board comprises a center segment distributing power and low-speed signaling, and outer segments for high-speed signaling. The segments use dielectric materials with different dielectric constants, with the outer segments supporting higher-speed signal transmission.

摘要翻译： 电路板包括分配功率和低速信号的中心段，以及用于高速信令的外部段。 这些段使用具有不同介电常数的介电材料，外部段支持更高速度的信号传输。

公开(公告)号：US20110228779A1

公开(公告)日：2011-09-22

申请号：US12776562

申请日：2010-05-10

申请人： JOEL R. GOERGEN

发明人： JOEL R. GOERGEN

IPC分类号： H04L12/56

CPC分类号： H04L49/40 ,  H04L12/64 ,  H04W28/02 ,  H04W28/18 ,  H04W56/00 ,  H04W72/12

摘要： A packet network device such as a network switch includes a number of functional cards or chassis modules at least some of which are connected to both an electrical backplane and a wireless backplane. The electrical backplane provides data plane signal paths and the wireless backplane provides control plane signal paths.

摘要翻译： 诸如网络交换机的分组网络设备包括多个功能卡或机箱模块，其中至少一些连接到电背板和无线背板。 电背板提供数据平面信号路径，无线背板提供控制平面信号路径。

公开(公告)号：US07897880B1

公开(公告)日：2011-03-01

申请号：US11999796

申请日：2007-12-07

申请人： Joel R. Goergen ,  Greg Hunt ,  Peter Tomaszewski ,  Joseph Pankow ,  Michael Laudon

发明人： Joel R. Goergen ,  Greg Hunt ,  Peter Tomaszewski ,  Joseph Pankow ,  Michael Laudon

IPC分类号： H05K1/11

CPC分类号： H05K1/0237 ,  H05K1/0245 ,  H05K1/0251 ,  H05K1/116 ,  H05K1/165 ,  H05K3/429 ,  H05K2201/093 ,  H05K2201/09636 ,  H05K2201/0969 ,  H05K2201/09718

摘要： Plated through holes pass through clearances in a ground plane of a circuit board. A conductive collar/spoke arrangement is constructed on the ground plane adjacent the clearance, to provide an inductive component to the coupling between a plated through hole and the ground plane. The inductive component impedes the transfer of high-frequency noise between the through hole and the ground plane. Other embodiments are also described and claimed.

摘要翻译： 电镀通孔通过电路板接地平面内的间隙。 在靠近间隙的接地平面上构造导电套环/辐条装置，以向电镀通孔和接地平面之间的耦合提供电感元件。 感应元件阻碍了通孔与接地面之间高频噪声的传递。 还描述和要求保护其他实施例。

公开(公告)号：US20090045889A1

公开(公告)日：2009-02-19

申请号：US11891785

申请日：2007-08-13

申请人： Joel R. Goergen ,  Greg Hunt

发明人： Joel R. Goergen ,  Greg Hunt

IPC分类号： H03H7/01 ,  H01K3/00 ,  H05K1/11

CPC分类号： H05K3/429 ,  H05K1/0216 ,  H05K1/0237 ,  H05K3/0047 ,  H05K2201/044 ,  H05K2201/09236 ,  H05K2201/09845 ,  H05K2203/0207 ,  H05K2203/0242 ,  H05K2203/175 ,  Y10T29/49165

摘要： A high-speed router backplane is disclosed. The router backplane uses differential signal pairs on multiple signal layers, each sandwiched between a pair of digital ground layers. Thru-holes are used to connect the differential signal pairs to external components. To reduce routing complexity, at least some of the differential signal pairs route through a via pair, somewhere along their path, to a different signal layer. At least some of the thru-holes and vias are drilled to reduce an electrically conductive stub length portion of the hole. The drilled portion of a hole includes a transition from a first profile to a second profile to reduce radio frequency reflections from the end of the drilled hole.

摘要翻译： 公开了一种高速路由器背板。 路由器背板在多个信号层上使用差分信号对，每个信号对夹在一对数字接地层之间。 通孔用于将差分信号对连接到外部组件。 为了降低路由复杂度，差分信号对中的至少一些在其路径的某处沿着不同的信号层路由通路对。 钻出至少一些通孔和通孔以减少孔的导电短截线长度部分。 孔的钻孔部分包括从第一轮廓到第二轮廓的转变，以减少从钻孔的端部的射频反射。

公开(公告)号：US20110235545A1

公开(公告)日：2011-09-29

申请号：US12732653

申请日：2010-03-26

申请人： KRISHNAMURTHY SUBRAMANIAN ,  SHIVI FOTEDAR ,  JANARDHNAN NARASIMHAN

发明人： KRISHNAMURTHY SUBRAMANIAN ,  SHIVI FOTEDAR ,  JANARDHNAN NARASIMHAN

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/54 ,  H04L45/04 ,  H04L45/66

摘要： An autonomous system includes at least some packet network devices that are capable of operating in a virtual route aggregation environment and some packet network devices that are not capable of operating in a virtual route aggregation environment. The autonomous system includes at least one egress border router, at least one aggregation router and at least one intermediate router. The egress border router uses an interior border gateway protocol to distribute a label message to the other routers in the autonomous system, the label message including a next hop MAC address associated with either an external router or the egress border router. The egress border router and the intermediate router using information included in the label message to contrast layer 2 table entries and the aggregation router using information included in the label message to construct a layer 3 table entry. The aggregation router receives a packet with a virtual prefix that corresponds to a virtual prefix in a list of virtual prefixes stored by the aggregation router, and routes the packet over a virtual path corresponding to one of the virtual prefixes.

摘要翻译： 自治系统至少包括能够在虚拟路由聚合环境中操作的分组网络设备和不能在虚拟路由聚合环境中操作的一些分组网络设备。 自治系统包括至少一个出口边界路由器，至少一个聚合路由器和至少一个中间路由器。 出口边界路由器使用内部边界网关协议将标签消息分发到自治系统中的其他路由器，标签消息包括与外部路由器或出口边界路由器相关联的下一跳MAC地址。 出口边界路由器和中间路由器使用标签消息中包含的信息来对比第二层表项和聚合路由器，使用包含在标签消息中的信息构建一个第三层表项。 汇聚路由器接收到具有与聚合路由器存储的虚拟前缀列表中的虚拟前缀对应的虚拟前缀的分组，并通过与虚拟前缀之一相对应的虚拟路径进行路由。

公开(公告)号：US07864706B1

公开(公告)日：2011-01-04

申请号：US12080749

申请日：2008-04-04

申请人： Kalpesh Zinjuwadia ,  Arun Viswanathan

发明人： Kalpesh Zinjuwadia ,  Arun Viswanathan

IPC分类号： H04L12/28

CPC分类号： H04L45/04 ,  H04L45/02

摘要： A method is disclosed for preventing an unstable BGP Peer from repeatedly initializing unstable BGP connections. In one embodiment, BGP speakers are penalized for causing errors that result in BGP restarts. When a speaker accumulates enough penalty points, its peer notifies it that it has been dampened (prevented from establishing a BGP connection). A memory decay function allows the speaker to automatically attempt a new connection once a given amount of time has passed. The method allows at least two, and possibly more, BGP speakers to avoid network and processor costs from servicing unstable BGP peerings.

摘要翻译： 公开了一种防止不稳定BGP对等体重复初始化不稳定BGP连接的方法。 在一个实施例中，BGP扬声器受到惩罚，导致导致BGP重新启动的错误。 当扬声器累积足够的点数时，其对等体通知它已被阻止（阻止建立BGP连接）。 记忆衰减功能允许扬声器在一段时间过去后自动尝试新的连接。 该方法允许至少两个，也可能是更多的BGP扬声器，以避免服务不稳定的BGP对等体的网络和处理器成本。

公开(公告)号：US07760668B1

公开(公告)日：2010-07-20

申请号：US11480075

申请日：2006-06-30

申请人： Vishal Zinjuvadia

发明人： Vishal Zinjuvadia

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L12/462 ,  H04L41/0813 ,  H04L45/02 ,  H04L45/028 ,  H04L45/48

摘要： A dynamic multiple spanning tree protocol is described. In at least one embodiment, this protocol allows for the dynamic creation and destruction of mappings between traffic attributes and spanning tree instances with the spanning tree region. These mappings are determined based on the observation of events in the spanning tree, such as the appearance of a significant traffic stream, not mapped to any spanning tree instance, at an edge port of the region. Other embodiments are also described and claimed.

摘要翻译： 描述了一种动态多生成树协议。 在至少一个实施例中，该协议允许动态创建和销毁具有生成树区域的业务属性和生成树实例之间的映射。 这些映射是基于生成树中的事件的观察来确定的，例如在该区域的边缘端口处的未映射到任何生成树实例的重要流量流的出现。 还描述和要求保护其他实施例。

公开(公告)号：US07729296B1

公开(公告)日：2010-06-01

申请号：US11899893

申请日：2007-09-07

申请人： Jagjit Choudhary

发明人： Jagjit Choudhary

IPC分类号： H04L12/28 ,  G06F15/16

CPC分类号： H04L45/00 ,  H04L12/4625 ,  H04L45/48 ,  H04L49/25 ,  H04L49/351 ,  H04L49/65

摘要： A distributed spanning tree protocol is implemented on a modular packet switch. At least some port-specific spanning tree functionality, for instance a port receive state machine and/or a port transmit state machine, operates on a processor on a line port module. At least some bridge-specific spanning tree functionality operates on a processor on a management or control module. When the spanning tree is stable, the line port module processor handles routine spanning tree “hello” messages without having to involve the control module processor. This arrangement allows the switch to handle large and/or multiple spanning trees and large numbers of bridged ports without overloading the control module processor with routine spanning tree module communications.

摘要翻译： 分布式生成树协议在模块化分组交换机上实现。 至少一些端口特定的生成树功能，例如端口接收状态机和/或端口传输状态机，在线路端口模块上的处理器上操作。 至少一些桥接特定生成树功能在管理或控制模块上的处理器上运行。 当生成树稳定时，线路端口模块处理器处理例行生成树“hello”消息，而不必涉及控制模块处理器。 这种布置允许交换机处理大型和/或多个生成树和大量桥接端口，而不会使用例行生成树模块通信过载控制模块处理器。