利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.024 秒)

    Method and apparatus for managing the flow of data within a switching device
    4.
    再颁专利
    Method and apparatus for managing the flow of data within a switching device 有权
    用于管理交换设备内的数据流的方法和装置

    公开(公告)号：USRE40467E1

    公开(公告)日：2008-08-26

    申请号：US11347786

    申请日：2006-02-03

    申请人： Randy Ryals ,  Jeffrey Prince ,  H. Earl Ferguson ,  Mike K. Noll ,  Derek H. Pitcher

    发明人： Randy Ryals ,  Jeffrey Prince ,  H. Earl Ferguson ,  Mike K. Noll ,  Derek H. Pitcher

    IPC分类号： H04L12/00

    CPC分类号： H04L49/901 ,  H04L29/06 ,  H04L47/10 ,  H04L49/90 ,  H04L49/9063

    摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes a routing information for the destination addresses that the interface card is most likely to receive.

    摘要翻译： 提供一种用于管理切换装置内的数据流的方法和装置。 交换设备包括连接到公共背板的网络接口卡。 每个接口卡被配置为通过维持“挂起”队列来支持背板的最大传输速率来跟踪已经接收到但是尚未确定适当的路由目的地的数据。 开关装置包括维持中央卡/端口到地址表的开关控制器。 当接口卡接收到具有接口卡不知道的目的地地址的数据时，接口卡通过与背板分离的总线执行直接存储器访问，以直接从交换机控制器中的中央表读取路由数据。 每个接口卡在其本地存储器中构建并维护路由信息表，其中仅包括接口卡最可能接收的目的地地址的路由信息​​。

    Method and apparatus for managing the flow of data within a switching device
    5.
    发明授权
    Method and apparatus for managing the flow of data within a switching device 失效

    公开(公告)号：US06427185B1

    公开(公告)日：2002-07-30

    申请号：US08896485

    申请日：1997-07-17

    申请人： Randy Ryals ,  Jeffrey Prince ,  H. Earl Ferguson ,  Mike K. Noll ,  Derek H. Pitcher

    发明人： Randy Ryals ,  Jeffrey Prince ,  H. Earl Ferguson ,  Mike K. Noll ,  Derek H. Pitcher

    IPC分类号： G06F1208

    CPC分类号： H04L49/901 ,  H04L29/06 ,  H04L47/10 ,  H04L49/90 ,  H04L49/9063

    摘要： A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes routing information for the destination addresses that the interface card is most likely to receive.

    Automatic speed sensing in a token ring local area network
    7.
    发明授权
    Automatic speed sensing in a token ring local area network 失效
    令牌环局域网自动速度检测

    公开(公告)号：US6026096A

    公开(公告)日：2000-02-15

    申请号：US680568

    申请日：1996-07-12

    申请人： H. Earl Ferguson ,  Michael Noll ,  Randy Ryals

    发明人： H. Earl Ferguson ,  Michael Noll ,  Randy Ryals

    IPC分类号： H04L12/433 ,  H04L25/02 ,  H04J3/00

    CPC分类号： H04L25/0262 ,  H04L12/433

    摘要： A method and apparatus for a node being inserted into a token ring local area network to sense the data transmission speed of the token ring LAN and automatically setting the data transmission speed of the node to match the data transmission speed of the token ring LAN. The token ring LAN may operate at either 4 megabits per second or 16 megabits per second. The node recovers data transmitted on the token ring, and determines, based thereon, the speed of the data transmission and configures the speed at which the node transmits and receives data to/from the token ring network accordingly.

    摘要翻译： 一种用于将节点插入到令牌环局域网中以感测令牌环LAN的数据传输速度并自动设置节点的数据传输速度以匹配令牌环LAN的数据传输速度的方法和装置。 令牌环LAN可以以每秒4兆比特或16兆比特每秒的速率操作。 节点恢复在令牌环上发送的数据，并且基于此确定数据传输的速度，并且配置节点相应地向/从令牌环网络发送数据的速度。

    Method and apparatus for controlling data flow within a switching device
    8.
    发明授权
    Method and apparatus for controlling data flow within a switching device 失效
    用于控制切换装置内的数据流的方法和装置

    公开(公告)号：US5732080A

    公开(公告)日：1998-03-24

    申请号：US501483

    申请日：1995-07-12

    申请人： H. Earl Ferguson ,  Jeffrey Prince ,  Mike K. Noll ,  Randy Ryals ,  Derek H. Pitcher

    发明人： H. Earl Ferguson ,  Jeffrey Prince ,  Mike K. Noll ,  Randy Ryals ,  Derek H. Pitcher

    IPC分类号： H04L12/56 ,  H04Q11/04 ,  H04L12/28

    CPC分类号： H04L12/5601 ,  H04L49/104 ,  H04L49/256 ,  H04L49/309 ,  H04Q11/0478 ,  H04L49/351

    摘要： A method and apparatus for controlling data flow within a switching device are provided. The switching device includes a cell-switched backplane. Both packet switched and cell switched network interface cards may be coupled to the cell-switched backplane. A destination tag is created for each unique destination port and for each unique set of destination ports. The destination tags are used to index a master destination tag table. The entry of the master destination tag table that corresponds to a given destination tag includes a destination mask that indicates which ports are destination ports the given destination tag. Local tables are built and maintained within each network interface card based on the information contained in the master destination tag table. When a network interface receives data from an external device, the network interface determines the destination tag associated with the data. Once the destination tag is determined, it is used as an index to the locally stored tables to determine whether the data should be forwarded to any local ports, and whether the data should be sent over the cell-switched backplane to other network interfaces within the switching device. When a network interface receives data over the backplane, the network interface uses the destination tag as an index to a locally stored table to determine to which local ports the data should be sent. Tables also establish correlations between destination tags and control information for converting data between packets and cells.

    摘要翻译： 提供一种用于控制切换装置内的数据流的方法和装置。 交换设备包括小区交换背板。 分组交换和小区交换网络接口卡都可以耦合到小区交换背板。 为每个唯一目标端口和每个唯一的目标端口集创建一个目标标签。 目的地标签用于索引主目标标签表。 对应于给定目的地标签的主目的地标签表的条目包括目的掩码，其指示哪些端口是给定目的地标签的目的地端口。 根据主目标标签表中包含的信息，在每个网络接口卡内构建和维护本地表。 当网络接口从外部设备接收数据时，网络接口确定与数据相关联的目的地标签。 一旦确定了目的地标签，就将其用作本地存储表的索引，以确定数据是否应转发到任何本地端口，以及数据是否应通过小区交换背板发送到其中的网络接口 开关装置。 当网络接口通过背板接收数据时，网络接口使用目标标签作为本地存储表的索引，以确定应向哪些本地端口发送数据。 表格还建立了目标标签和控制信息之间的相关性，以便在数据包和单元之间转换数据。

    Method and apparatus for transmitting cells across an ATM switch bus
    9.
    发明授权
    Method and apparatus for transmitting cells across an ATM switch bus 失效
    用于通过ATM交换总线传送信元的方法和装置

    公开(公告)号：US5852606A

    公开(公告)日：1998-12-22

    申请号：US536137

    申请日：1995-09-29

    申请人： Jeff Prince ,  Mike Noll ,  Earl Ferguson ,  Bobby Johnson ,  Randy Ryals

    发明人： Jeff Prince ,  Mike Noll ,  Earl Ferguson ,  Bobby Johnson ,  Randy Ryals

    IPC分类号： H04L12/56 ,  H04Q11/04

    CPC分类号： H04Q11/0478 ,  H04L2012/561 ,  H04L2012/5614

    摘要： The switch fabric of the ATM switch, i.e., the ATM switch backplane bus, switches a cell based on routing information provided by the source LAN or ATM module to an output port on a destination LAN or ATM module of the switching hub. In the described system, the ATM switch is preconfigured to provide a fully connected topology between ports of all modules. In one embodiment, ATM cells transmitted across the ATM switch fabric between a source LAN or ATM module and a destination LAN module, e.g., Token Ring, FDDI or Ethernet, is accomplished by way of a routing tag prepended on the ATM cells. The routing tag provides both unicast and multicast group destination information such that the ATM cells are routed to the appropriate port on a given destination module without the need to establish a virtual circuit between the source module and the destination module using VPI/VCIs.

    摘要翻译： ATM交换机的交换结构，即ATM交换机背板总线，根据由源LAN或ATM模块提供的路由信息​​将小区切换到交换集线器的目的地LAN或ATM模块上的输出端口。 在所描述的系统中，ATM交换机被预配置为在所有模块的端口之间提供完全连接的拓扑。 在一个实施例中，通过在ATM信元上提供的路由标签来实现通过ATM交换结构在源LAN或ATM模块与目的地LAN模块（例如，令牌环，FDDI或以太网）之间传输的ATM信元。 路由标签提供单播和多播组目的地信息，使得ATM信元被路由到给定目的地模块上的适当端口，而不需要使用VPI / VCI在源模块和目的地模块之间建立虚拟电路。