Bi-lateral bandwidth negotiation upon detection of a short-term traffic pattern change
    1.
    发明授权
    Bi-lateral bandwidth negotiation upon detection of a short-term traffic pattern change 失效
    检测到短期流量模式变化时的双向带宽协商

    公开(公告)号:US07535912B2

    公开(公告)日:2009-05-19

    申请号:US10963647

    申请日:2004-10-14

    IPC分类号: H04L12/28

    摘要: The present invention relates to a switching unit with a low-latency flow control. Queuing parameters of ingress queues, wherein the incoming traffic is backlogged, are measured to detect a short term traffic increase. An additional bandwidth is then negotiated to accommodate this unexpected additional amount of traffic, provided that the corresponding input and output termination modules still dispose of available bandwidth, and disregarding temporarily fairness. This additional bandwidth allows this unexpected additional amount of traffic to be drained from the ingress queue as soon as possible, without waiting for the next system bandwidth fair re-distribution, thereby improving the traffic latency through the switching unit.

    摘要翻译: 本发明涉及具有低等待时间流量控制的切换单元。 测量进入流量被积压的入口队列的排队参数,以检测短期流量增加。 然后协商额外的带宽以适应这种意想不到的额外的流量,只要相应的输入和输出终端模块仍然处理可用带宽,并忽略暂时的公平性。 这种额外的带宽允许尽可能快地从入口队列中排除这种意想不到的额外的流量,而不用等待下一个系统带宽公平的重新分配,从而通过交换单元改善流量等待时间。

    Scalable and QoS aware flow control
    2.
    发明授权
    Scalable and QoS aware flow control 有权
    可扩展和QoS感知流量控制

    公开(公告)号:US07522624B2

    公开(公告)日:2009-04-21

    申请号:US10965844

    申请日:2004-10-18

    IPC分类号: H04L12/28

    摘要: The present invention relates to a switching unit with a scalable and QoS aware flow control. The actual schedule rate of an egress queue, wherein the outgoing traffic belonging to a particular class of service is backlogged, is measured and compared to its expected schedule rate. If the egress queue is scheduled below expectation, then the bandwidth of every virtual ingress-to-egress pipe connecting an ingress queue, wherein the incoming traffic belonging to the same class of service is backlogged before transmission through the switch core fabric, to that egress queue is increased, thereby feeding that egress queue with more data units.

    摘要翻译: 本发明涉及具有可扩展和QoS感知流量控制的切换单元。 测量排出队列的实际调度速率,其中属于特定服务等级的输出业务被重新填充,并与其预期调度速率进行比较。 如果出口队列调度低于期望值,则连接入口队列的每个虚拟入口到出口管道的带宽,其中属于相同等级的服务的入站流量在通过交换机核心架构传输之前被积压到该出口 队列增加,从而为更多的数据单元提供出口队列。

    Flow and congestion control in a switching network
    4.
    发明授权
    Flow and congestion control in a switching network 有权
    交换网络中的流量和拥塞控制

    公开(公告)号:US07173901B2

    公开(公告)日:2007-02-06

    申请号:US10152283

    申请日:2002-05-22

    IPC分类号: H04J1/16

    CPC分类号: H04L47/12 H04L47/10 H04L49/10

    摘要: System for obtaining an efficient and scaleable flow control in a large packet switched network including ingress termination boards (B1″) linked to egress termination boards (B4″) by means of virtual ingress to egress flow control links through a switch core.The flow control transmission link between a port of an ingress termination board and a port of an egress termination board comprises at least two virtual ingress to egress flow controlled traffic pipes (VIEP″a, VIEP″b), one pipe handling all the traffic between the two ports which is going towards communication channels for which no congestion is detected at the level of the egress termination board, the other pipe handling all the traffic going towards communication channels for which congestion is detected.

    摘要翻译: 用于在大分组交换网络中获得有效和可扩展的流量控制的系统,包括通过虚拟入口链接到出口终端板(B 4“)的入口终端板(B 1”),以通过交换机核心流出流量控制链路 。 入口终端板的端口和出口终端板的端口之间的流控制传输链路包括至少两个虚拟入口到出口流控流量管道(VIEP'a,VIEP“b),一个管道处理所有 在出口终端板的级别上不发生拥塞的通信信道的两个端口之间的业务,另一个管理器处理到检测到拥塞的通信信道的所有业务。

    Switch and a switching method
    5.
    发明授权
    Switch and a switching method 有权
    切换和切换方式

    公开(公告)号:US07768914B2

    公开(公告)日:2010-08-03

    申请号:US12031208

    申请日:2008-02-14

    IPC分类号: G01R31/08

    摘要: A switch at a transmission end of a system including a number of memory devices defining queues for receiving traffic to be switched, each queue having an associated predetermined priority classification, and a processor for controlling the transmission of traffic from the queues. The processor transmits traffic from the higher priority queues before traffic from lower priority queues. The processor monitors the queues to determine whether traffic has arrived at a queue having a higher priority classification than the queue from which traffic is currently being transmitted. The processor suspends the current transmission after transmission of the current minimum transmittable element if traffic has arrived at a higher priority queue, transmits traffic from the higher priority queue, and then resumes the suspended transmission. At a receiving end, a switch that includes a processor separates the interleaved traffic into output queues for reassembly of individual traffic streams from the data stream.

    摘要翻译: 在系统的发送端处的交换机,包括定义用于接收要切换的业务的队列的多个存储器设备,每个队列具有相关联的预定优先级分类,以及用于控制来自队列的业务传输的处理器。 处理器在来自较低优先级队列的流量之前从较高优先级队列传送流量。 处理器监视队列以确定流量是否已经到达具有比当前正在传输流量的队列更高的优先级分类的队列。 如果业务已经到达较高优先级队列,则传输当前最小可发送元素之后,处理器暂停当前传输,从较高优先级队列传输业务,然后恢复暂停传输。 在接收端,包括处理器的交换机将交织的业务分离成输出队列,以从数据流重新组合各个业务流。

    System comprising an aggregation sub-system and tributary sub-systems
    6.
    发明申请
    System comprising an aggregation sub-system and tributary sub-systems 审中-公开
    系统包括聚合子系统和支流子系统

    公开(公告)号:US20060251002A1

    公开(公告)日:2006-11-09

    申请号:US11415140

    申请日:2006-05-02

    IPC分类号: H04J3/08 H04B7/14

    摘要: Systems (1) comprising aggregation sub-systems (14,15) and tributary sub-systems (11-13) comprising direct aggregation interfaces (31-33,41-43) for exchanging traffic with the aggregation sub-systems (14,15) get increased flexibilities by providing at least one tributary sub-system (12) with an indirect aggregation interface (35) for exchanging traffic with an other indirect aggregation interface (44) of an other tributary sub-system (11) in the system (1). Traffic can be exchanged not just between a direct aggregation interface (31-33,41-43) of tributary sub-systems (11-13) and aggregation sub-systems (14,15) but also between indirect aggregation interfaces (34-36,44-46) of tributary sub-systems (11-13). By providing at least one tributary sub-system (12) with a further indirect aggregation interface (45) for exchanging traffic with a yet other indirect aggregation interface (36) of a yet other tributary sub-system (13) in the system (1), the tributary sub-system (12) can exchange traffic with two other tributary sub-systems (11,13). The tributary sub-systems (11-13) are tributary line terminations and the aggregation sub-systems (14,15) are aggregation network terminations.

    摘要翻译: 包括聚合子系统(14,15)和支路子系统(11-13)的系统(1),其包括用于与聚合子系统交换业务的直接聚合接口(31-33,41-43)(14,15 通过向至少一个支路子系统(12)提供间接汇聚接口(35)来获得增加的灵活性,用于与系统中的另一支路子系统(11)的另一个间接汇聚接口(44)交换流量( 1)。 流量可以不仅在支路子系统(11-13)和聚合子系统(14,15)的直接聚合接口(31-33,41-43)之间交换,而且可以在间接聚合接口之间交换(34-36) ,44 - 46)支流子系统(11 - 13)。 通过向至少一个支路子系统(12)提供另外的间接聚合接口(45),用于与系统(1)中的另一个辅助子系统(13)的另一个间接聚合接口(36)交换业务 ),支流子系统(12)可以与另外两个支路子系统(11,13)交换流量。 支流子系统(11-13)是支线终端,聚合子系统(14,15)是聚合网络终端。

    Network element comprising a switch fabric
    9.
    发明授权
    Network element comprising a switch fabric 失效
    网络元件包括交换结构

    公开(公告)号:US07515586B2

    公开(公告)日:2009-04-07

    申请号:US11156528

    申请日:2005-06-21

    IPC分类号: H04L12/28 H04L12/56

    摘要: Switch fabrics (10) comprise first stages (11) for receiving multicast input signals (A-C) and second stages (12) for in response to the input signals generating output signals. The switch fabrics (10) are coupled to detectors (31) for detecting parameters indicating conditions of the second stages (12) per output signal and for generating detection results per output signal, and are coupled to controllers (21) for, in response to the detection results, controlling the second stages (12) per output signal. Such switch fabrics (10) handle output congestion in a more individual way. In case of one part of the second stage (12) being congested, the copying of the multicast input signals (A-C) into output signals and their internal transmission no longer need to be ceased. Only one of the output signals corresponding with the congested part of the second stage (12) cannot be delivered. Further detectors (32) detect further input signals (A-C) comprising segments of the same protocol data unit as the input signals (A-C).

    摘要翻译: 交换结构(10)包括用于响应于产生输出信号的输入信号而接收组播输入信号(A-C)和第二级(12)的第一级(11)。 交换结构(10)耦合到检测器(31),用于检测指示每个输出信号的第二级(12)的条件的参数,并且用于产生每个输出信号的检测结果,并且耦合到控制器(21),以响应于 检测结果,控制每个输出信号的第二级(12)。 这种交换结构(10)以更独立的方式处理输出拥塞。 在第二级(12)的一部分拥塞的情况下,多播输入信号(A-C)复制成输出信号及其内部传输不再需要停止。 仅与第二级(12)的拥挤部分对应的输出信号之一不能被传送。 进一步的检测器(32)检测包括与输入信号(A-C)相同的协议数据单元的段的另外的输入信号(A-C)。

    Switch and a switching method
    10.
    发明授权
    Switch and a switching method 有权
    切换和切换方式

    公开(公告)号:US07352695B2

    公开(公告)日:2008-04-01

    申请号:US09778764

    申请日:2001-02-08

    摘要: A switch at a transmission end of a system including a number of memory devices defining queues for receiving traffic to be switched, each queue having an associated predetermined priority classification, and a processor for controlling the transmission of traffic from the queues. The processor transmits traffic from the higher priority queues before traffic from lower priority queues. The processor monitors the queues to determine whether traffic has arrived at a queue having a higher priority classification than the queue from which traffic is currently being transmitted. The processor suspends the current transmission after transmission of the current minimum transmittable element if traffic has arrived at a higher priority queue, transmits traffic from the higher priority queue, and then resumes the suspended transmission. At a receiving end, a switch that includes a processor separates the interleaved traffic into output queues for reassembly of individual traffic streams from the data stream.

    摘要翻译: 在系统的发送端处的交换机,包括定义用于接收要切换的业务的队列的多个存储器设备,每个队列具有相关联的预定优先级分类,以及用于控制来自队列的业务传输的处理器。 处理器在来自较低优先级队列的流量之前从较高优先级队列传送流量。 处理器监视队列以确定流量是否已经到达具有比当前正在传输流量的队列更高的优先级分类的队列。 如果业务已经到达较高优先级队列,则传输当前最小可发送元素之后,处理器暂停当前传输,从较高优先级队列传输业务,然后恢复暂停传输。 在接收端,包括处理器的交换机将交织的业务分离成输出队列,以从数据流重新组合各个业务流。