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    A method and apparatus for restoring the unicast traffic
    22.
    发明专利
    A method and apparatus for restoring the unicast traffic 有权

    公开(公告)号：JP5369228B2

    公开(公告)日：2013-12-18

    申请号：JP2012180039

    申请日：2012-08-15

    Applicant: 華為技術有限公司Huawei Technologies Co.,Ltd.

    Inventor： ▲イン▼ ▲謝▼

    IPC: H04L12/42 ,  H04L12/427

    CPC classification number: H04L12/437

    Abstract: The present invention discloses a method and an apparatus for recovering unicast traffic during an Ethernet ring failover, relates to the field of communication technologies, and solves the problem of interruption of the unicast traffic caused by a link failure during the Ethernet ring failover and before completion of flushing of the MAC address table. In embodiments of the present invention, because a network switch sets the broadcast flags of the ports in the loop of the Ethernet ring to the set state before completion of flushing of the MAC address table, if the broadcast flag of the destination port corresponding to the destination address in a unicast packet received by the network switch is in the set state, the network switch broadcasts the unicast packet. Therefore, the network switch in the loop of the Ethernet ring can recover the interrupted unicast traffic without waiting for completion of flushing of the MAC address table, thereby implementing recovering the unicast traffic during an Ethernet ring failover.

    Update method and system of blocking port information
    23.
    发明专利
    Update method and system of blocking port information 有权

    公开(公告)号：JP5346125B2

    公开(公告)日：2013-11-20

    申请号：JP2012530108

    申请日：2010-04-14

    Applicant: ゼットティーイー コーポレーションZte Corporation

    Inventor： ウー，シャオヨン

    IPC: H04L12/437

    CPC classification number: H04L12/437 ,  H04L12/462

    Abstract: A method for updating blocked port information is provided by the present invention. The method includes that: when the Ring Protection Link (RPL) owner node in the Ethernet ring is in a pending state and after a wait to restore (WTR) timer expires, the RPL owner node in the Ethernet ring updates the flushing record information of the adjacent port of the RPL to: the information identifying the blocked port of the RPL owner node in the Ethernet ring . A system for updating blocked port information is also provided by the present invention. In the system, an updating unit is used by the RPL owner node in the Ethernet ring to update the flushing record information of the adjacent port of the RPL to: the information identifying the blocked port of the RPL owner node in the Ethernet ring. The blocked port information of the RPL owner node in the Ethernet can be updated in time by application of the method and system of the present invention, and therefore the problem that the RPL owner node re-flushes when the Ethernet ring switches back can be solved.

    Physical layer interface, system, and method
    24.
    发明专利
    Physical layer interface, system, and method 有权
    物理层界面，系统和方法

    公开(公告)号：JP2013229891A

    公开(公告)日：2013-11-07

    申请号：JP2013118780

    申请日：2013-06-05

    Applicant: Smsc Holdings Sarl ,  エスエムエスシイ・ホールディングス・エス エイ アール エル

    Inventor： DAVID J KNAPP

    IPC: H04B10/43 ,  H04L12/28 ,  H04L12/42

    CPC classification number: H04L12/437 ,  H04L12/43 ,  H04L45/28 ,  H04L2012/40273

    Abstract: PROBLEM TO BE SOLVED: To provide a fault tolerant network capable of supporting the existing applications serviced by MOST and CAN and the new applications of X-by-wire targeted by FlexRay.SOLUTION: A data communication system and an associated network node use single-channel bi-directional communication links between nodes to send frames of data. The network nodes can be connected together in a ring or daisy chain topology with data frames sent in alternating directions through the bi-directional links. Such networks initially configured in a physical ring topology can tolerate single point failures by automatically switching to a logical daisy chain topology.

    Abstract translation: 要解决的问题：提供能够支持MOST和CAN所服务的现有应用的容错网络以及FlexRay针对的X-by-Wire的新应用。解决方案：数据通信系统和相关网络节点使用单链路， 节点之间的通道双向通信链路发送数据帧。 网络节点可以通过双向链路以交替方向发送的数据帧以环形或菊花链拓扑连接在一起。 最初配置在物理环形拓扑中的这种网络可以通过自动切换到逻辑菊花链拓扑来容忍单点故障。

    Method and device for restoring unicast traffic
    26.
    发明专利
    Method and device for restoring unicast traffic 有权
    恢复间谍交通的方法和装置

    公开(公告)号：JP2013081157A

    公开(公告)日：2013-05-02

    申请号：JP2012180039

    申请日：2012-08-15

    Applicant: Huawei Technologies Co Ltd ,  華為技術有限公司Huawei Technologies Co.,Ltd.

    Inventor： XIE YING

    IPC: H04L12/42 ,  H04L12/427

    CPC classification number: H04L12/437

    Abstract: PROBLEM TO BE SOLVED: To reduce the problem of the disturbed sequence of a plurality of unicast packets successively transmitted in order, before the update of a MAC address table is completed in a ring failure avoidance system.SOLUTION: A network switch sets a broadcast flag of a port in the loop of an Ethernet ring to a set state before the completion of updating the MAC address table. When a broadcast flag of a destination port corresponding to the destination address of a unicast packet received by the network switch is in the set state, the network switch broadcasts the unicast packet. Accordingly, the network switch in the loop of the Ethernet ring can recover the interrupted unicast traffic without waiting for the completion of the MAC address table update. Thus, the unicast traffic can be recovered in the middle of the execution of the Ethernet ring failure avoidance system.

    Abstract translation: 要解决的问题：为了减少在环路故障回避系统中完成MAC地址表的更新之前依次顺序发送的多个单播分组的干扰序列的问题。 解决方案：网络交换机在完成更新MAC地址表之前，将以太网环路环路中的端口的广播标志设置为设置状态。 当与由网络交换机接收到的单播分组的目的地地址相对应的目的地端口的广播标志处于设置状态时，网络交换机广播单播分组。 因此，以太网环路环路中的网络交换机可以恢复中断的单播流量，而无需等待MAC地址表更新的完成。 因此，在以太网环路故障回避系统的执行过程中，可以恢复单播流量。 版权所有（C）2013，JPO＆INPIT

    Ring network and network relay equipment
    27.
    发明专利
    Ring network and network relay equipment 有权

    公开(公告)号：JP5169968B2

    公开(公告)日：2013-03-27

    申请号：JP2009101849

    申请日：2009-04-20

    Applicant: 日立電線株式会社

    Inventor： 斉 桑田 ,  康一郎 瀬戸

    IPC: H04L12/42

    CPC classification number: H04L12/437 ,  H04L69/40

    Abstract: A ring network with plural network relay devices connected in a ring shape includes first and second control ports to be transitioned into either a forwarding state that permits relaying information, or a blocking state that prohibits relaying information; and a ring protocol control unit for transmitting connection confirmation information indicative of communications being possible between the first and the second control port, from the first to the second control port, and from the second to the first control port at a predetermined time interval, or for, in the event that the first or the second control port does not receive the connection confirmation information from the second or the first control port, transmitting failure information indicative of communications being not possible between the first and the second control port, from the first to the second control port, or from the second to the first control port. The ring protocol control unit transitions the first control port into the blocking state when the first control port receives the failure information, or into the forwarding state when the first control port transmits the failure information. The ring protocol control unit transitions the second control port into the blocking state when the second control port receives the failure information, or into the forwarding state when the second control port transmits the failure information.

    Network device, network system, and computer program
    28.
    发明专利
    Network device, network system, and computer program 有权
    网络设备，网络系统和计算机程序

    公开(公告)号：JP2013051481A

    公开(公告)日：2013-03-14

    申请号：JP2011187124

    申请日：2011-08-30

    Applicant: Alaxala Networks Corp ,  アラクサラネットワークス株式会社

    Inventor： INO KENSUKE ,  YOSHINO HIROMASA ,  NOZAKI SHINJI

    IPC: H04L12/42

    CPC classification number: H04L43/50 ,  H04L12/437 ,  H04L43/0817

    Abstract: PROBLEM TO BE SOLVED: To enable continuous detection of failures in a ring network when exchanging a monitoring node.SOLUTION: In a ring network having an old monitoring node 100, the old monitoring node 100 is replaced with a new monitoring node 110. At this exchange, when it is detected that both ring ports become in a linkup state, the new monitoring node 110 instructs a relay node 200 to transfer a health check frame H102 transmitted from the ring port 102 of the old monitoring node 100 to the new monitoring node 110 side. As a result, the new monitoring node 110 monitors the ring network by receiving the health check frame H102.

    Abstract translation: 要解决的问题：在交换监控节点时，能够连续检测环网中的故障。 解决方案：在具有旧监视节点100的环网中，旧监视节点100被替换为新的监视节点110.在这种交换中，当检测到两个环形端口变为链路状态时，新的 监视节点110指示中继节点200将从旧监视节点100的环形端口102发送的运行状况检查帧H102传送到新的监视节点110侧。 结果，新的监视节点110通过接收健康检查帧H102来监视环网。 版权所有（C）2013，JPO＆INPIT

    Information processor, communication method, and program
    29.
    发明专利
    Information processor, communication method, and program 有权
    信息处理器，通信方法和程序

    公开(公告)号：JP2012243162A

    公开(公告)日：2012-12-10

    申请号：JP2011114111

    申请日：2011-05-20

    Applicant: Canon Inc ,  キヤノン株式会社

    Inventor： HARA YUJI ,  ISHIKAWA TAKASHI

    IPC: G06F15/173 ,  G06F13/38

    CPC classification number: H04L12/4637 ,  H04J3/085 ,  H04L1/0082 ,  H04L1/1854 ,  H04L12/40071 ,  H04L12/437 ,  H04L47/10

    Abstract: PROBLEM TO BE SOLVED: To solve the problem in which an information processor performing data delivery and processing using a ring-shaped bus has the risk that suspended packets are increased to cause dead lock.SOLUTION: An information processor includes a plurality of communication units connected to a bus like a ring. At least one of the plurality of communication units determines whether a processing unit which executes processing on received data is a processing unit which executes processing subsequent to processing of a processing unit corresponding to the communication unit or not, and detects whether processing on received data is suspended in processing units corresponding to the other communication units or not, in which if it is determined that the processing unit which executes processing on received data is a processing unit which executes processing subsequent to processing of the processing unit corresponding to the communication unit and it is detected that processing on the received data is suspended, a transmission interval is extended.

    Abstract translation: 要解决的问题：为了解决使用环形总线执行数据传送和处理的信息处理器具有增加暂停分组以致死锁的风险的问题。 解决方案：信息处理器包括连接到诸如环的总线的多个通信单元。 多个通信单元中的至少一个确定对接收到的数据执行处理的处理单元是否是在对与通信单元对应的处理单元进行处理之后执行处理的处理单元，并且检测对接收到的数据的处理是否为 暂停在与其他通信单元相对应的处理单元中，其中如果确定对接收到的数据执行处理的处理单元是在对应于通信单元的处理单元的处理之后执行处理的处理单元， 检测到对接收到的数据的处理被暂停，则发送间隔延长。 版权所有（C）2013，JPO＆INPIT

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