公开(公告)号：US06628608B1

公开(公告)日：2003-09-30

申请号：US09277518

申请日：1999-03-26

申请人： Onchuen Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao

发明人： Onchuen Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao

IPC分类号： G01R3108

CPC分类号： H04L49/351 ,  H04L49/1523 ,  H04L49/25 ,  H04L49/30 ,  H04L49/55 ,  H04L49/90 ,  H04L49/9063 ,  H04L49/9084

摘要： A method of managing a network switch. The method having the first step of detecting a status of a set of physical ports on an interface card in the network switch. Then, determining if the status is in a first state that indicates that all physical ports in the interface card are inaccessible. If the status is in the first state, then accepting all traffic for the set of physical ports. Also disclosed is an apparatus for performing the method.

摘要翻译： 一种管理网络交换机的方法。 该方法具有检测网络交换机中的接口卡上的一组物理端口的状态的第一步骤。 然后，确定状态是否处于表示接口卡中的所有物理端口不可访问的第一状态。 如果状态处于第一状态，则接受该物理端口的所有流量。 还公开了一种用于执行该方法的装置。

公开(公告)号：US06625121B1

公开(公告)日：2003-09-23

申请号：US09301519

申请日：1999-04-28

申请人： Onchuen Lau ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao

发明人： Onchuen Lau ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao

IPC分类号： H04J116

CPC分类号： H04L12/5601 ,  H04L47/10 ,  H04L47/12 ,  H04L47/15 ,  H04L49/203 ,  H04L49/90 ,  H04L2012/5681 ,  H04L2012/5682

摘要： An apparatus and method for reducing congestion in a network switching node. A congestion mask that indicates which of a plurality of destination ports in a network switching node are congested is generated and combined with a destination port field included in a packet in a multicast queue of the switching node to mask destination port designations in the destination port field that are indicated by the congestion mask to be congested if a drop eligibility field within the packet indicates that destination port designations are permitted to be masked. The packet is dequeued from the multicast queue to be forwarded to destination ports in the network switching node indicated by destination port designations in the destination port field not masked by the combination of the congestion mask with the destination port field.

摘要翻译： 一种用于减少网络交换节点拥塞的装置和方法。 生成表示网络交换节点中的多个目的地端口中的哪一个拥塞的拥塞掩码，并与包含在交换节点的多播队列中的分组中的目的地端口字段组合，以掩盖目的地端口字段中的目的地端口名称 如果分组内的丢弃资格字段指示允许目的地端口指定被屏蔽，则由拥塞掩码指示为拥塞。 数据包从组播队列出发，转发到目的端口字段指示的网络交换节点中的目的端口，目的端口字段未被阻塞掩码与目的端口字段的组合掩蔽。

公开(公告)号：US06898211B1

公开(公告)日：2005-05-24

申请号：US09334693

申请日：1999-06-16

申请人： Onchuen D. Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao ,  Neil King

发明人： Onchuen D. Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmohan Samrao ,  Neil King

IPC分类号： H04J3/06

CPC分类号： H04J3/0697

摘要： A synchronization state for a local clock generating circuit of a first of a number of components of a distributed system is maintained according to a number of local clock cycles recorded between successive occurrences of a global synchronization signal provided to the components within the distributed system. The local clock generating circuit may enters the synchronization state only after observing a predetermined number of occurrences of successive local clock cycles between instances of the global synchronization signal. The local clock generating circuit continues to provide local control signals for the first of the components at time instants corresponding to the number of local clock cycles even after an instance of the global synchronization signal is observed at a time instant corresponding to one local clock cycle more or less than the number of local clock cycles. However, the local clock generating circuit enters an alarm state when the global synchronization signal is observed at time instants corresponding to more than one local clock cycle more or less than the number of local clock cycles.

摘要翻译： 根据在分布式系统中提供给组件的全局同步信号的连续出现之间记录的本地时钟周期的数量来保持分布式系统的多个组件中的第一个组件的本地时钟发生电路的同步状态。 本地时钟发生电路只有在观察到全局同步信号的实例之间的连续本地时钟周期的预定次数的出现之后，才能进入同步状态。 本地时钟发生电路继续在对应于本地时钟周期的数量的时刻在第一个分量提供本地控制信号，即使在对应于一个本地时钟周期的时间点观察到全局同步信号的一个实例之后 或小于本地时钟周期的数量。 然而，当在多于或多于本地时钟周期的多于一个本地时钟周期的时刻观察全局同步信号时，本地时钟发生电路进入报警状态。

公开(公告)号：US06578092B1

公开(公告)日：2003-06-10

申请号：US09295680

申请日：1999-04-21

申请人： O. Daryn Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmobau Samrao ,  Neil King

发明人： O. Daryn Lau ,  Frank Chui ,  Gene Chui ,  Gary Kipnis ,  Gurmobau Samrao ,  Neil King

IPC分类号： G06F1300

CPC分类号： H04L25/14 ,  H04L7/005

摘要： A communication interface is described to align at a destination data transmitted through different channels before that data is read out. The communication interface includes a receiver circuit that has a plurality of buffers. Each buffer is coupled to a corresponding channel to receive data therethrough. The communication interface also includes a control circuit, coupled to the plurality of buffers, to enable reading of data from the plurality of buffers when each of the plurality of buffers has received at least one unit of data.

摘要翻译： 描述通信接口以在读出该数据之前通过不同信道发送的目的地数据进行对齐。 通信接口包括具有多个缓冲器的接收器电路。 每个缓冲器耦合到相应的通道以接收数据。 通信接口还包括耦合到多个缓冲器的控制电路，以便当多个缓冲器中的每一个已经接收到至少一个数据单元时，能够从多个缓冲器读取数据。

公开(公告)号：US06747971B1

公开(公告)日：2004-06-08

申请号：US09295429

申请日：1999-04-20

申请人： David A. Hughes ,  Daryn Lau ,  Dan Klausmeier ,  Eugene Wang ,  Madhav Marathe ,  Frank Chui ,  Gene K. Chui ,  Gary Kipnis ,  Gurmohan S. Samrao ,  Lionel A. King

发明人： David A. Hughes ,  Daryn Lau ,  Dan Klausmeier ,  Eugene Wang ,  Madhav Marathe ,  Frank Chui ,  Gene K. Chui ,  Gary Kipnis ,  Gurmohan S. Samrao ,  Lionel A. King

IPC分类号： H04L1256

CPC分类号： H04L12/5601 ,  H04L49/153 ,  H04L49/203 ,  H04L49/255 ,  H04L49/3081 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04Q11/0478

摘要： An apparatus is described comprising an ingress port and a plurality of switch planes where each of the switch planes has a dedicated scheduler and each of the switch planes are communicatively coupled to the ingress port. The switch planes may further have at least one input control port and at least one output control port where each of the input control ports are coupled to each of the output control ports in a crossbar arrangement. The communicative coupling may further comprise one of the input control ports coupled to the ingress port. Furthermore, the ingress port may have at least one unicast queue which is dedicated to a specific egress port. The ingress port may also have a multicast queue. The dedicated scheduler may further comprise a pointer to determine priority between multicast and unicast traffic, a pointer to determine priority between contending input control ports having multicast traffic and/or a pointer for each of the output control ports to determine priority between contending input control ports having unicast traffic. The apparatus may also further comprise a plurality of ingress ports where each of the ingress ports are communicatively coupled to one of each of the input control ports.

摘要翻译： 描述了一种装置，其包括入口端口和多个开关平面，其中每个开关平面具有专用调度器，并且每个开关平面通信地耦合到入口端口。 开关平面还可以具有至少一个输入控制端口和至少一个输出控制端口，其中每个输入控制端口以交叉布置方式耦合到每个输出控制端口。 交流耦合还可以包括耦合到入口端口的输入控制端口之一。 此外，入口端口可以具有专用于特定出口端口的至少一个单播队列。 入口端口也可以具有多播队列。 专用调度器还可以包括用于确定多播和单播业务之间的优先级的指针，用于确定具有多播业务的竞争输入控制端口和/或每个输出控制端口的指针之间的优先级的指针，以确定竞争输入控制端口 具有单播流量。 该设备还可以包括多个入口端口，其中每个入口端口通信地耦合到每个输入控制端口中的一个。