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    High speed parallel bit error rate tester
    1.
    发明授权
    High speed parallel bit error rate tester 失效
    高速并行位错误率测试仪

    公开(公告)号：US06438717B1

    公开(公告)日：2002-08-20

    申请号：US09436350

    申请日：1999-11-09

    申请人： Joseph N Butler ,  Mark A Hughes ,  Neil O Fanning ,  Eugene O'Neill ,  Una Quinlan

    发明人： Joseph N Butler ,  Mark A Hughes ,  Neil O Fanning ,  Eugene O'Neill ,  Una Quinlan

    IPC分类号： G06F1100

    CPC分类号： H04L1/20 ,  H04L1/0001 ,  H04L25/14

    摘要： A high speed link between chips and comprising a multiplicity of synchronous serial data channels includes an onboard detector for detecting an error rate for each channel. The transmitter and the receiver chips are configured in response to the detector to select the channel having the lowest error rate as the control channel and optionally to render at least the channel with the highest error rate inactive.

    摘要翻译： 芯片之间的高速链路包括多个同步串行数据信道，包括用于检测每个信道的错误率的板上检测器。 响应于检测器配置发射机和接收机芯片，以选择具有最低误码率的信道作为控制信道，并且可选地使至少具有最高错误率的信道无效。

    Framing codes for high-speed parallel data buses
    2.
    发明授权
    Framing codes for high-speed parallel data buses 失效
    高速并行数据总线的成帧代码

    公开(公告)号：US06275880B1

    公开(公告)日：2001-08-14

    申请号：US09253537

    申请日：1999-02-22

    申请人： Una Quinlan ,  Con Cremin ,  Eugene O'Neill ,  J. Noel Butler ,  Mark A. Hughes ,  Neil O. Fanning

    发明人： Una Quinlan ,  Con Cremin ,  Eugene O'Neill ,  J. Noel Butler ,  Mark A. Hughes ,  Neil O. Fanning

    IPC分类号： G06F1300

    CPC分类号： H04L1/0063 ,  H04L1/0072 ,  Y10S707/99942 ,  Y10S707/99943 ,  Y10S707/99944

    摘要： A plurality of serial data streams are transmitted on a corresponding plurality of lines at a common frequency in equal groups of symbols. A framing signal composed of groups of symbols corresponding in number to groups of data symbols is transmitted on an additional control line. Each group of symbols in the framing signal includes a majority of symbols capable of representing a first plurality of code words and a second plurality, substantially less than the first plurality, of valid code words, and a minority of symbols which constitute parity check symbols. Each of the valid code words consists of a first sub-group of similar symbols and a second plurality of similar symbols. For some of the valid code words the symbols in the first sub-group are similar to the symbols in the second sub-group. For other valid code words the symbols in the first sub-group are different from the symbols in the second sub-group. The valid code words correspond to groups which represent (a) start of a data packet or block; (b) data/(c) a gap between groups of data; and (d) an idle state. The sequence of groups in the framing signal is monitored by means of a state machine.

    摘要翻译： 多个串行数据流以相等的符号组以公共频率在对应的多条线上发送。 在附加控制线上发送由多个数据符号组对应的符号组构成的成帧信号。 成帧信号中的每组符号包括能够表示第一多个码字的多数符号，以及基本上小于第一多个有效码字的第二多个符号，以及构成奇偶校验符号的少数符号。 每个有效代码字由相似符号的第一子组和第二多个相似符号组成。 对于一些有效的代码字，第一子组中的符号与第二子组中的符号相似。 对于其他有效的代码字，第一子组中的符号与第二子组中的符号不​​同。 有效码字对应于表示（a）数据包或块的开始的组; （b）数据/（c）数据组之间的差距; 和（d）空闲状态。 通过状态机监视成帧信号中的组的序列。

    Integrated data table in a network
    6.
    发明授权
    Integrated data table in a network 有权
    网络中集成数据表

    公开(公告)号：US06661787B1

    公开(公告)日：2003-12-09

    申请号：US09286470

    申请日：1999-04-06

    申请人： Anne G. O'Connell ,  Eugene O'Neill ,  Una Quinlan

    发明人： Anne G. O'Connell ,  Eugene O'Neill ,  Una Quinlan

    IPC分类号： H04L1256

    CPC分类号： H04L45/742 ,  H04L12/4625 ,  H04L12/4641

    摘要： A method of operating a network device in a communication system for the transmission of data packets which include network addresses identifying sources and destinations of data, the network device being capable of both bridging and routing decisions and including a forwarding database by means of which a packet including network address data can be forwarded to at least one port and thereby to at least one network path identified by a network address, and packets can be forwarded to at least one port in response to a media access control address. The method comprises establishing a data table which contains entries comprising a network address of an end station to which a packet is destined, a respective media access control address and an identification of at least one port to which the packet will be directed within the device. The table is accessed in response to network addresses and media access control addresses, whereby the same table can be used for both routing and bridging decisions.

    摘要翻译： 一种在用于传输数据分组的通信系统中操作网络设备的方法，所述数据分组包括识别数据的源和目的地的网络地址，所述网络设备能够进行桥接和路由决策，并且包括转发数据库，​​通过该转发数据库， 包括网络地址数据可以转发到至少一个端口，从而被转发到由网络地址标识的至少一个网络路径，并且可以响应于媒体访问控制地址将数据包转发到至少一个端口。 该方法包括建立数据表，该数据表包含包含分组所去往的终端站的网络地址的条目，相应的媒体访问控制地址以及分组将在该设备内被引导到的至少一个端口的标识。 响应于网络地址和媒体访问控制地址访问该表，由此同一表可以用于路由和桥接决定。

    Credit-based scheme for high performance communication between devices in a packet-based communication system
    7.
    发明授权
    Credit-based scheme for high performance communication between devices in a packet-based communication system 失效
    基于信息的方案，用于基于分组的通信系统中的设备之间的高性能通信

    公开(公告)号：US06442162B1

    公开(公告)日：2002-08-27

    申请号：US09253538

    申请日：1999-02-22

    申请人： Eugene O'Neill ,  Una Quinlan ,  Anne G. O'Connell

    发明人： Eugene O'Neill ,  Una Quinlan ,  Anne G. O'Connell

    IPC分类号： H04L1228

    CPC分类号： H04L47/10 ,  H04L47/26 ,  H04L47/30 ,  H04L49/3018 ,  H04L49/351 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9078

    摘要： A network switch comprises a first device which includes a store for data packets, a second device which includes a plurality of ports from which the packets may be transmitted, a plurality of temporary stores each associated with one of the ports, a data bus connecting the first device to the second device, a unit for maintaining a count of units of storage space in respect of each of the ports, a unit for incrementing the respective count on transmission of data from one of the stores, and a unit for decrementing the count in response to dispatch of data from the temporary store in the first device to the second device.

    摘要翻译： 网络交换机包括第一设备，其包括用于数据分组的存储器，第二设备，其包括可以从其发送分组的多个端口，与端口中的一个相关联的多个临时存储器，连接 第一设备到第二设备，用于维护关于每个端口的存储空间单元数量的单元，用于递增来自一个存储器的数据传输的相应计数的单元，以及用于递减计数的单元 响应于将数据从第一设备中的临时存储器分派到第二设备。

    Cascade system for network units
    8.
    发明授权
    Cascade system for network units 有权
    级联系统为网络单元

    公开(公告)号：US08879444B2

    公开(公告)日：2014-11-04

    申请号：US13526251

    申请日：2012-06-18

    申请人： Bryan J Donoghue ,  Quang T Tran ,  Eugene O'Neill ,  David J Law ,  Paul J Moran ,  Edele O'Malley ,  Jerome Nolan ,  Kam Choi ,  Maurice A Goodfellow

    发明人： Bryan J Donoghue ,  Quang T Tran ,  Eugene O'Neill ,  David J Law ,  Paul J Moran ,  Edele O'Malley ,  Jerome Nolan ,  Kam Choi ,  Maurice A Goodfellow

    IPC分类号： H04B7/00 ,  H04L12/433

    CPC分类号： H04L12/433

    摘要： In one embodiment, a method is described for detecting an operational failure between the network unit and an adjacent network unit in the stack; controlling the switching engine to redirect packets which would otherwise be sent from a particular port to the adjacent network unit to be forwarded from another port to be sent to a different network unit in the stack; and entering the switching engine into a bypass mode in response to control data indicating an operational failure between at least two other network units in the stack to cause packets to be forwarded without being re-directed by the switching engine.

    摘要翻译： 在一个实施例中，描述了一种用于检测网络单元和堆叠中的相邻网络单元之间的操作故障的方法; 控制交换引擎将否则将从特定端口发送到相邻网络单元的分组，以从要发送到堆栈中的不同网络单元的另一端口转发; 以及响应于指示所述堆叠中的至少两个其他网络单元之间的操作故障的控制数据，将所述交换引擎进入旁路模式，以使转发引擎不重新引导分组。

    Network units for use in and organisation of cascade systems
    9.
    发明授权
    Network units for use in and organisation of cascade systems 有权
    用于级联系统的网络单元和组织

    公开(公告)号：US07522589B2

    公开(公告)日：2009-04-21

    申请号：US10337299

    申请日：2003-01-07

    申请人： Eugene O'Neill ,  Kam Choi ,  Edele O'Malley ,  Maurice A Goodfellow

    发明人： Eugene O'Neill ,  Kam Choi ,  Edele O'Malley ,  Maurice A Goodfellow

    IPC分类号： H04L12/28

    CPC分类号： H04L45/02 ,  H04L45/26 ,  H04L45/742 ,  H04L49/201 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/351

    摘要： A multi-port network unit for use in a cascade system of network units sends from a cascade port a packet including a special header having a source port ID, a destination port ID and a ‘destination port known’ field. The port IDs identify both a unit and a port within a unit. A routing database is set up, optionally by a discovery protocol, in terms of ports and either destination units (within the cascade) or source units (within the cascade). The database includes a mesh table, indicating from which cascade port a packet with a known destination port ID should be forwarded, without needing a fresh look-up. The database also includes a multicast exclusion table which allows ingress of packets with source unit IDs matched to an ingress port. The scheme allows a general mesh type of cascade while dynamically preventing closed loops.

    摘要翻译： 用于网络级联系统的多端口网络单元从级联端口发送包括具有源端口ID，目的端口ID和“目的端口已知”字段的特殊报头的分组。 端口ID标识单元中的单元和端口。 根据端口和目标单元（级联）或源单元（级联内），路由数据库可选地由发现协议来设置。 数据库包括网格表，指示哪个级联端口具有应该转发具有已知目的地端口ID的分组，而不需要新的查找。 该数据库还包括一个组播排除表，允许进入与进入端口匹配的源单元ID的数据包。 该方案允许一般网格类型的级联，同时动态地防止闭环。

    Cascade control system for network units
    10.
    发明授权
    Cascade control system for network units 有权
    网络单元级联控制系统

    公开(公告)号：US07167441B2

    公开(公告)日：2007-01-23

    申请号：US10067965

    申请日：2002-02-08

    申请人： Bryan J Donoghue ,  Eugene O'Neill ,  Edele O'Malley ,  Paul J Moran ,  Kam Choi ,  Jerome Nolan

    发明人： Bryan J Donoghue ,  Eugene O'Neill ,  Edele O'Malley ,  Paul J Moran ,  Kam Choi ,  Jerome Nolan

    IPC分类号： H04L12/28 ,  H04L12/56 ,  H04J3/00

    CPC分类号： H04L12/433

    摘要： Cascade control logic for use in a switch or other network unit that can be used in a cascaded stack can maintain normally a point-to-point half-duplex connection for control data with each of the next preceding and next succeeding units in the cascade. Each cascade logic device is organised so that for one direction, conveniently called the up direction, a device is a master and in the other direction the device is a slave in respect of the control path. A control device will generate master control frames in the up direction and deliver slave control frames in the down direction. The control device is organised so that in the absence of reception of valid control frames on a control link control data which would otherwise be sent out on that link is looped back within the control device. In this manner the control device can maintain under normal circumstances two virtual control channels which can ‘self-heal’ notwithstanding the failure or powering-down of a unit in the cascade.Status information represented by the control frames can be used to control a switching engine to provide self healing of the data path in the cascade.

    摘要翻译： 用于在级联堆叠中使用的交换机或其他网络单元中的级联控制逻辑可以正常地维护级联中的下一个前一个和后续单元中的每一个的控制数据的点对点半双工连接。 每个级联逻辑器件被组织成使得对于一个方向，方便地称为向上方向，器件是主器件，并且在另一方向上，器件是关于控制路径的从器件。 控制装置将沿向上方向产生主控制帧，并向下传送从控制帧。 控制装置被组织成使得在没有接收到控制链路上的有效控制帧的情况下，否则将在该链路上发送的控制数据环回到控制装置内。 以这种方式，控制装置可以在正常情况下维持两个虚拟控制通道，即使在级联中的单元发生故障或断电，它们也可“自愈”。 由控制帧表示的状态信息可用于控制切换引擎以提供级联中的数据路径的自愈。