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。

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。

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。

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。

公开(公告)号：US06684258B1

公开(公告)日：2004-01-27

申请号：US09547759

申请日：2000-04-12

申请人： Vincent Gavin ,  Una Quinlan ,  Denise De Paor ,  Tadhg Creedon ,  Nicholas M Stapleton

发明人： Vincent Gavin ,  Una Quinlan ,  Denise De Paor ,  Tadhg Creedon ,  Nicholas M Stapleton

IPC分类号： G06F1516

CPC分类号： H04L12/433

摘要： A stackable network unit which can form a ring with other units has a master mode in which it can place packets on the ring, so that they can be ultimately forwarded from other units, and a repeat mode in which it can make a request for transfer of mastership of the ring, inserting bits in a header of an arbitration packet. If a master unit has completed the transmission of a packet and, preferably, after the required inter-packet gap has elapsed, it has not yet received an arbitration header to permit the making of an arbitration decision it can transmit a subsequent packet. The header information of this packet indicates to the other units that this subsequent packet is part of a burst of packets and the other units should not set requests in the header of this packet because this packet would not be used for arbitration. The master unit indicates the nature of the subsequent packet by setting a sequence number in the header of the packet to distinguish it and following packets in a burst from the ‘first’ packet which is the one used to pick up requests from the units that may need to become the master unit.

摘要翻译： 可以与其他单元形成环的可堆叠网络单元具有主模式，其中它可以在环上放置分组，使得它们可以最终从其他单元转发，并且可以在其中进行转移请求的重复模式 在该仲裁包的头部插入位。 如果主单元已经完成了分组的传输，并且优选地，在所需的分组间间隔已经过去之后，它还没有接收到仲裁报头以允许作出可以发送后续分组的仲裁决定。 该分组的报头信息向其他单元指示该后续分组是分组的突发的一部分，并且其他单元不应该在该分组的报头中设置请求，因为该分组不会用于仲裁。 主单元通过在分组报头中设置序列号来指示后续分组的性质，以便从“第一”分组中突发出来的分组中跟随分组，该分组是用于从可能的单元接收请求的分组 需要成为主机。

公开(公告)号：US06486450B1

公开(公告)日：2002-11-26

申请号：US09662114

申请日：2000-09-14

申请人： Una Quinlan ,  Vincent Gavin ,  Tadhg Creedon

发明人： Una Quinlan ,  Vincent Gavin ,  Tadhg Creedon

IPC分类号： H05B102

CPC分类号： G01R31/2877

摘要： An application specific integrated circuit includes a multiplicity of operative circuit blocks. Disposed in at least one of the blocks is a multiplicity of selectively operative heater modules for providing localised heating within the block. The heater modules may comprise cyclic redundancy code generators each coupled to respond to a system clock, and each heater module may include a system clock divider providing a multiplicity of differently divided clock signals and means for selecting a clock signal for use by the module. The invention is useful in design variable testing to produce variation with temperature of the frequency of an intermittent timing error.

摘要翻译： 专用集成电路包括多个操作电路块。 设置在至少一个块中的是多个选择性操作的加热器模块，用于在块内提供局部加热。 加热器模块可以包括循环冗余码发生器，每个循环冗余码发生器各自耦合以响应于系统时钟，并且每个加热器模块可以包括提供多个不同分割时钟信号的系统时钟分频器和用于选择模块使用的时钟信号的装置。 本发明在设计变量测试中可用于产生随间歇定时误差频率的温度变化。

公开(公告)号：US07257739B2

公开(公告)日：2007-08-14

申请号：US09924955

申请日：2001-08-08

申请人： Una Quinlan

发明人： Una Quinlan

IPC分类号： G06F11/00

CPC分类号： H04L41/069 ,  H04L41/0672 ,  H04L43/0811

摘要： A method of diagnosing, in a network comprising two devices (A), (B) connectable by a link (20), which link may be a physical link such as a cable or may be a wireless link, the type of failure of the connection between the devices (referred to as “link failure”, although the failure may only be a partial failure such as lack of synchronization and may lie not in the link itself but in the one or both devices or the protocol used), said method comprising connecting the two devices together (for example, by physically connecting them or switching on the link between them), at least one (B) of the devices including a plurality of registers (23), each register being adapted to store data about one or more types of said failure, running an auto-negotiation sequence, detecting said failure and passing signals relating to that failure to the relevant register(s), interrogating the or each register, and determining the type of said failure.Examples of link failure are: loss of light; bit/word alignment failure; loss of synchronization during auto-negotiation; auto-negotiation protocol hang during base page exchange; auto-negotiation protocol hang during next page exchange; auto-negotiation protocol (repeated) restart due to link partner initiating a “break link”. There may be included software for controlling the method which includes routines which are able to analyze the information from the registers (23), and to pass signals to a visual display unit (26) to display thereon a message which in accordance with the type of failure determined by the method includes a suggested course of action to overcome the failure.

摘要翻译： 一种在包括由链路（20）可连接的两个设备（A），（B））的网络中诊断的方法，所述链路可以是诸如电缆的物理链路或可以是无线链路，所述故障的类型 设备之间的连接（称为“链路故障”，尽管故障可能仅仅是部分故障，例如缺乏同步，并且可能不在于链路本身，而是在一个或两个设备或所使用的协议中），所述方法 包括将两个设备连接在一起（例如，通过物理连接它们或切换它们之间的链路），至少一个设备（B）包括多个寄存器（23），每个寄存器适于存储关于一个 或更多类型的所述故障，运行自动协商序列，检测所述故障并将与该故障相关的信号传递到相关寄存器，询问该寄存器或每个寄存器，以及确定所述故障的类型。 链路故障的例子有：光的损失; 位/字对齐失败; 自动协商失去同步; 自动协商协议在基页交换期间挂起; 下一页交换时自动协商协议挂起; 由于链路伙伴启动“断开连接”，自动协商协议（重复）重启。 可以包括用于控制方法的软件，其包括能够分析来自寄存器（23）的信息的例程，并将信号传递到视觉显示单元（26），以在其上显示根据 该方法确定的失败包括建议的克服失败行为的过程。