公开(公告)号：US20060013141A1

公开(公告)日：2006-01-19

申请号：US11024519

申请日：2004-12-29

申请人： Ryoichi Mutoh ,  Tetsuya Nishi ,  Kiichi Sugitani

发明人： Ryoichi Mutoh ,  Tetsuya Nishi ,  Kiichi Sugitani

IPC分类号： G01R31/08 ,  H04L12/28

CPC分类号： H04L45/00 ,  H04L12/462 ,  H04L43/00 ,  H04L45/18 ,  H04L45/48

摘要： A loop frame detecting devise includes a frame receiving and transmitting unit and a loop detecting unit. The frame receiving and transmitting unit receives and transmits the Layer 2 frame. The loop detecting unit monitors contents of the frame that is received or to be transmitted by the frame receiving and transmitting unit, determines whether the frame is a loop frame that circulates in the Layer 2 network, detects the loop frame, and minimizes a loop failure.

摘要翻译： 环路帧检测装置包括帧接收和发送单元和环路检测单元。 帧接收发送单元接收并发送第2层帧。 环路检测单元监视由帧接收和发送单元接收或要发送的帧的内容，确定帧是否是在第2层网络中循环的循环帧，检测环路帧，并使环路故障最小化 。

公开(公告)号：US20050286430A1

公开(公告)日：2005-12-29

申请号：US11061695

申请日：2005-02-22

申请人： Yoshihiko Koga ,  Wataru Nakamura ,  Tetsuya Nishi ,  Ryoichi Mutoh ,  Hiroaki Yamamoto

发明人： Yoshihiko Koga ,  Wataru Nakamura ,  Tetsuya Nishi ,  Ryoichi Mutoh ,  Hiroaki Yamamoto

IPC分类号： H04L12/26 ,  H04L12/46 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L12/462 ,  H04L43/16 ,  H04L63/1408 ,  H04L69/22 ,  H04L69/324

摘要： An abnormal traffic eliminating apparatus eliminates an abnormal traffic that is generated in a network through which frames including a MAC header part, an IP header part and an IP datagram part are transmitted. The apparatus is provided with a write part for writing an FCS field of an MAC frame that is received by a plurality of ports to a search engine part, and a loop monitoring and detecting part counting a number of received MAC frames having identical FCS values and judging that the network is in a loop state if the number of received MAC frames having the identical FCS values and received within a predetermined time exceeds a preset threshold value.

摘要翻译： 异常流量消除装置消除在网络中产生的异常流量，通过该网络发送包括MAC报头部分，IP报头部分和IP数据报部分的帧。 该装置设置有写入部分，用于将由多个端口接收的MAC帧的FCS字段写入搜索引擎部分，以及对具有相同FCS值的接收的MAC帧的数量进行计数的环路监视和检测部分，以及 如果在预定时间内接收的具有相同FCS值的接收MAC帧的数量超过预设阈值，则判断网络处于环路状态。

公开(公告)号：US20060209859A1

公开(公告)日：2006-09-21

申请号：US11212284

申请日：2005-08-26

申请人： Ryoichi Mutoh ,  Kazuto Nishimura

发明人： Ryoichi Mutoh ,  Kazuto Nishimura

IPC分类号： H04L12/28

CPC分类号： H04L12/4637 ,  H04L12/462 ,  H04L41/12

摘要： In an inter-ring connection method and device interconnecting a plurality of RPR rings, an inter-ring connecting device (interconnecting station) determines whether or not an RPR frame received from one ring is a broadcast frame; and resets, when the RPR frame determined to be the broadcast frame is relayed to another ring, a ttl of the frame so that a predetermined point between the inter-ring connection device itself and another identical inter-ring connection device opposed within a ring to be relayed is a cleave point. Also, topology information of the one ring is transmitted to another ring; topology information of each ring is held in a topology database; and an RPR frame is relayed (unicasted) between the rings by referring to the topology database based on a destination address of the RPR frame.

公开(公告)号：US08432792B2

公开(公告)日：2013-04-30

申请号：US12618187

申请日：2009-11-13

申请人： Yasuki Fujii ,  Yuji Tochio ,  Shinya Kano ,  Ryoichi Mutoh

发明人： Yasuki Fujii ,  Yuji Tochio ,  Shinya Kano ,  Ryoichi Mutoh

IPC分类号： G08C15/00

CPC分类号： H04L12/437 ,  H04L47/72 ,  H04L47/781

摘要： A node apparatus in a ring network in which a protection path is provided that cycles around the ring network and transports a signal in a direction opposite to a signal transporting direction of the working path and in the event of a failure of the working path, a node apparatus adjacent to the failure loops back the signal flowing on the working path onto the protection path, the node apparatus comprising: allowable bandwidth storing unit which stores a maximum total bandwidth value, which represents the largest value among per-link total values of bandwidths that a plurality of working paths use on respective links connecting between the node apparatuses, as an allowable bandwidth for a shared path; and bandwidth control unit which controls the bandwidth of traffic flowing on the protection path, in accordance with the allowable bandwidth.

摘要翻译： 环形网络中的节点装置，其中提供保护路径，其围绕环形网络循环并且沿与工作路径的信号传送方向相反的方向传送信号，并且在工作路径发生故障的情况下， 所述节点装置包括：允许带宽存储单元，其存储最大总带宽值，其表示带宽的每链路总值中的最大值 多个工作路径用于在节点设备之间连接的相应链路上，作为用于共享路径的可允许带宽; 以及带宽控制单元，其根据允许带宽控制在保护路径上流动的流量的带宽。

公开(公告)号：US08712235B2

公开(公告)日：2014-04-29

申请号：US13371808

申请日：2012-02-13

申请人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

发明人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

IPC分类号： G02F1/00 ,  G02F2/00 ,  H04B17/00

CPC分类号： H04J3/14 ,  H04L12/437 ,  H04L45/22 ,  H04L45/28 ,  H04L69/40

摘要： A transmission apparatus includes a processor configured to recognize a number of working failures and a number of protection failures on a network for transmission of wavelength-multiplexed signal light, the number of working failures being the number of failures in signal light in wavelengths at a working entity and the number of protection failures being the number of failures in signal light in wavelengths at a protection entity, configured to perform path switching for each group of signal light in wavelengths that are different from each other and configured to select, when multiple failures occur, restoration processing, on a basis of the number of working failures and the number of protection failures.

摘要翻译： 发送装置包括：处理器，被配置为识别网络上的多个工作故障和多个保护故障，用于波分复用信号光的传输，工作故障的数量是在工作中波长的信号光中的故障次数 实体，并且保护失败的数量是保护实体的波长中的信号光中的故障数，被配置为对于彼此不同的波长的每组信号光执行路径切换，并且被配置为当多个故障发生时被选择 ，恢复处理，根据工作故障次数和保护失败次数。

公开(公告)号：US20100188970A1

公开(公告)日：2010-07-29

申请号：US12618187

申请日：2009-11-13

申请人： Yasuki FUJII ,  Yuji Tochio ,  Shinya Kano ,  Ryoichi Mutoh

发明人： Yasuki FUJII ,  Yuji Tochio ,  Shinya Kano ,  Ryoichi Mutoh

IPC分类号： G06F11/00

CPC分类号： H04L12/437 ,  H04L47/72 ,  H04L47/781

摘要： A node apparatus in a ring network in which a protection path is provided that cycles around the ring network and transports a signal in a direction opposite to a signal transporting direction of the working path and in the event of a failure of the working path, a node apparatus adjacent to the failure loops back the signal flowing on the working path onto the protection path, the node apparatus comprising: allowable bandwidth storing unit which stores a maximum total bandwidth value, which represents the largest value among per-link total values of bandwidths that a plurality of working paths use on respective links connecting between the node apparatuses, as an allowable bandwidth for a shared path; and bandwidth control unit which controls the bandwidth of traffic flowing on the protection path, in accordance with the allowable bandwidth.

摘要翻译： 环形网络中的节点装置，其中提供保护路径，其围绕环形网络循环并且沿与工作路径的信号传送方向相反的方向传送信号，并且在工作路径发生故障的情况下， 所述节点装置包括：允许带宽存储单元，其存储最大总带宽值，其表示带宽的每链路总值中的最大值 多个工作路径用于在节点设备之间连接的相应链路上，作为用于共享路径的可允许带宽; 以及带宽控制单元，其根据允许带宽控制在保护路径上流动的流量的带宽。

公开(公告)号：US09160562B2

公开(公告)日：2015-10-13

申请号：US13599955

申请日：2012-08-30

申请人： Ryoichi Mutoh

发明人： Ryoichi Mutoh

IPC分类号： H04L12/437 ,  H04L12/40

CPC分类号： H04L12/437 ,  H04L12/40032

摘要： At a node, a first receiver receives ring information from a first adjacent node. A second receiver receives ring information from a second adjacent node. A first transmitter transmits ring information obtained by adding first local ring information attached between the node and the second adjacent node to the ring information received by the first receiver, to the second adjacent node. A second transmitter transmits ring information obtained by adding second local ring information attached between the node and the first adjacent node to the ring information received by the second receiver, to the first adjacent node.

摘要翻译： 在节点处，第一接收机从第一相邻节点接收环信息。 第二接收机从第二相邻节点接收振铃信息。 第一发射机通过将附加在节点和第二相邻节点之间的第一本地环信息添加到由第一接收机接收的环信息中而获得的环信息发送到第二相邻节点。 第二发射机通过将附加在节点和第一相邻节点之间的第二本地环信息与由第二接收机接收的振铃信息相加而获得的振铃信息发送到第一相邻节点。

公开(公告)号：US20070165658A1

公开(公告)日：2007-07-19

申请号：US11431351

申请日：2006-05-10

申请人： Ryoichi Mutoh

发明人： Ryoichi Mutoh

IPC分类号： H04L12/28

CPC分类号： H04L12/4637 ,  H04L12/437

摘要： A transmission apparatus arranged on one packet ring connects the packet ring and the other packet ring by performing an acquiring step for acquiring connection information of the other packet ring and the own apparatus and a notifying step for notifying other transmission apparatuses arranged on the packet ring of redundant configuration information indicating a status of the interconnection between the packet ring and the other packet ring, based on the connection information.

摘要翻译： 布置在一个分组环上的传输设备通过执行获取另一个分组环和自己的设备的连接信息的获取步骤来连接分组环和另一个分组环，以及通知步骤，用于通知其他传输设备 基于连接信息指示分组环与另一个分组环之间的互连的状态的冗余配置信息。

公开(公告)号：US08861956B2

公开(公告)日：2014-10-14

申请号：US13533332

申请日：2012-06-26

申请人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

发明人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

IPC分类号： H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0295 ,  H04J14/0269 ,  H04J14/0283 ,  H04Q11/0005 ,  H04Q2011/0039

摘要： An apparatus switches paths in a wavelength-multiplexing network in which a first number of wavelengths each used for a path to transmit an optical signal are multiplexed into an optical fiber. The apparatus includes an entire switching unit and a second number of individual switching units where the second number is smaller than the first number. The entire switching unit is configured to perform a path-switching process for switching a path, simultaneously on all the first number of wavelengths when failures have occurred for all the first number of wavelengths. The second number of individual switching units are each configured to perform the path-switching process individually on one of a third number of wavelengths included in the first number of wavelengths when at least one failure has occurred for the third number of wavelengths where the third numbers is smaller than the first number.

摘要翻译： 一种装置切换波长复用网络中的路径，其中每个用于发送光信号的路径的第一数量的波长被复用到光纤中。 该装置包括整个开关单元和第二数量的单独开关单元，其中第二数量小于第一数量。 整个开关单元被配置为执行用于在所有第一数量的波长发生故障时同时对所有第一数量的波长切换路径的路径切换处理。 第二数量的各个开关单元被配置为当对于第三数量的波长发生至少一个故障时，分别在包括在第一波长数中的第三数量波长之一上执行路径切换处理，其中第三数量 小于第一个数字。

公开(公告)号：US20130028592A1

公开(公告)日：2013-01-31

申请号：US13533332

申请日：2012-06-26

申请人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

发明人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

IPC分类号： H04Q11/00 ,  H04J14/02

CPC分类号： H04J14/0295 ,  H04J14/0269 ,  H04J14/0283 ,  H04Q11/0005 ,  H04Q2011/0039

摘要： An apparatus switches paths in a wavelength-multiplexing network in which a first number of wavelengths each used for a path to transmit an optical signal are multiplexed into an optical fiber. The apparatus includes an entire switching unit and a second number of individual switching units where the second number is smaller than the first number. The entire switching unit is configured to perform a path-switching process for switching a path, simultaneously on all the first number of wavelengths when failures have occurred for all the first number of wavelengths. The second number of individual switching units are each configured to perform the path-switching process individually on one of a third number of wavelengths included in the first number of wavelengths when at least one failure has occurred for the third number of wavelengths where the third numbers is smaller than the first number.

摘要翻译： 一种装置切换波长复用网络中的路径，其中每个用于发送光信号的路径的第一数量的波长被复用到光纤中。 该装置包括整个开关单元和第二数量的单独开关单元，其中第二数量小于第一数量。 整个开关单元被配置为执行用于在所有第一数量的波长发生故障时同时对所有第一数量的波长切换路径的路径切换处理。 第二数量的各个开关单元被配置为当对于第三数量的波长发生至少一个故障时，分别在包括在第一波长数中的第三数量波长之一上执行路径切换处理，其中第三数量 小于第一个数字。