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1. 发明授权

US07633889B2 Carrier network of virtual network system and communication node of carrier network 有权
标题翻译：虚拟网络系统的运营商网络和运营商网络的通信节点
公开(公告)号：US07633889B2
公开(公告)日：2009-12-15
申请号：US11060717
申请日：2005-02-17
申请人： Atsuko Higashitaniguchi , Hiroshi Kinoshita , Satsuki Norimatsu , Masami Doukai
发明人： Atsuko Higashitaniguchi , Hiroshi Kinoshita , Satsuki Norimatsu , Masami Doukai
IPC分类号： H04L12/28 , H04L12/56 , G06F15/173 , G06F15/177 , G06F15/16
CPC分类号： H04L45/00 , H04L12/4666 , H04L45/18
摘要： The present invention provides a carrier network in which a spanning tree with no loops can be constructed even in a dual homing configuration, and a communication method for a control frame. By allocating an identical virtual network identifier to a plurality of user networks connected to the carrier network, a single virtual network is constituted. An ingress communication node connected to a first user network of the plurality of user networks attaches a tag including the virtual network identifier to a control frame transmitted from the first user network, and transmits the control frame attached with the tag to a transmission destination determined on the basis of the virtual network identifier. An egress communication node connected to a second user network of the plurality of user networks receives the control frame attached with the tag, which is to be transmitted to the second user network, removes the tag from the control frame attached with the tag, and transmits the control frame to the second user network.
摘要翻译：本发明提供一种运营商网络，其中即使在双归属配置中也可以构建不具有循环的生成树，以及用于控制帧的通信方法。通过向连接到运营商网络的多个用户网络分配相同的虚拟网络标识符，构成单个虚拟网络。连接到所述多个用户网络中的第一用户网络的入口通信节点将包括所述虚拟网络标识符的标签附加到从所述第一用户网络发送的控制帧，并将附加有所述标签的控制帧发送到确定的发送目的地虚拟网络标识符的基础。连接到多个用户网络中的第二用户网络的出口通信节点接收附加有要发送到第二用户网络的标签的控制帧，从附加有标签的控制帧中移除标签，并发送控制帧到第二用户网络。

2. 发明申请

US20050163102A1 Carrier network of virtual network system and communication node of carrier network 有权
标题翻译：虚拟网络系统的运营商网络和运营商网络的通信节点
公开(公告)号：US20050163102A1
公开(公告)日：2005-07-28
申请号：US11060717
申请日：2005-02-17
申请人： Atsuko Higashitaniguchi , Hiroshi Kinoshita , Satsuki Norimatsu , Masami Doukai
发明人： Atsuko Higashitaniguchi , Hiroshi Kinoshita , Satsuki Norimatsu , Masami Doukai
IPC分类号： H04L12/44 , H04L12/46 , H04L12/70 , H04L12/28
CPC分类号： H04L45/00 , H04L12/4666 , H04L45/18
摘要： The present invention provides a carrier network in which a spanning tree with no loops can be constructed even in a dual homing configuration, and a communication method for a control frame. By allocating an identical virtual network identifier to a plurality of user networks connected to the carrier network, a single virtual network is constituted. An ingress communication node connected to a first user network of the plurality of user networks attaches a tag including the virtual network identifier to a control frame transmitted from the first user network, and transmits the control frame attached with the tag to a transmission destination determined on the basis of the virtual network identifier. An egress communication node connected to a second user network of the plurality of user networks receives the control frame attached with the tag, which is to be transmitted to the second user network, removes the tag from the control frame attached with the tag, and transmits the control frame to the second user network.
摘要翻译：本发明提供一种运营商网络，其中即使在双归属配置中也可以构建不具有循环的生成树，以及用于控制帧的通信方法。通过向连接到运营商网络的多个用户网络分配相同的虚拟网络标识符，构成单个虚拟网络。连接到所述多个用户网络中的第一用户网络的入口通信节点将包括所述虚拟网络标识符的标签附加到从所述第一用户网络发送的控制帧，并将附加有所述标签的控制帧发送到确定的发送目的地虚拟网络标识符的基础。连接到多个用户网络中的第二用户网络的出口通信节点接收附加有要发送到第二用户网络的标签的控制帧，从附加有标签的控制帧中移除标签，并发送控制帧到第二用户网络。

3. 发明申请

US20060182036A1 Fault detection device 有权
标题翻译：故障检测装置
公开(公告)号：US20060182036A1
公开(公告)日：2006-08-17
申请号：US11155658
申请日：2005-06-20
申请人： Yasushi Sasagawa , Kenichi Kawarai , Masami Doukai , Kou Takatori
发明人： Yasushi Sasagawa , Kenichi Kawarai , Masami Doukai , Kou Takatori
IPC分类号： H04L12/26 , G06F11/00 , H04J3/14 , G01R31/08 , G08C15/00 , H04J1/16 , H04L1/00
CPC分类号： H04L41/06 , H04L1/24 , H04L43/10
摘要： A fault detection device capable of detecting network faults by itself with high accuracy in multi-vendor environments, without the need to interoperate with an associated device according to an identical protocol. A monitoring control packet transmitter generates a fault monitoring control packet and transmits the generated packet to the associated device with which the fault detection device need not interoperate to detect faults according to the same protocol. A transmit packet counter keeps count of the transmitted fault monitoring control packet. A receive packet counter receives a control packet transmitted from the associated device, and keeps count of the received control packet. A fault detector monitors the count of transmitted packets and the count of received packets and, if at least one of the counts remains unchanged for a fixed period of time, judges that a fault has occurred and sends a fault notification to outside.
摘要翻译：一种故障检测装置，能够在多供应商环境中以高精度本身检测网络故障，而不需要根据相同协议与相关设备进行互操作。监控控制分组发送机生成故障监控控制分组，并将生成的分组发送到故障检测设备不需要互操作的相关设备，以根据相同的协议检测故障。发送分组计数器保持传输的故障监视控制分组的计数。接收分组计数器接收从相关设备发送的控制分组，并且保持所接收的控制分组的计数。故障检测器监控发送的数据包的计数和接收的数据包的计数，如果至少一个计数在一段固定的时间内保持不变，则判断发生了故障，并向外部发送故障通知。

4. 发明授权

US07590048B2 Restoration and protection method and an apparatus thereof 有权
标题翻译：恢复和保护方法及其装置
公开(公告)号：US07590048B2
公开(公告)日：2009-09-15
申请号：US10690228
申请日：2003-10-17
申请人： Masami Doukai
发明人： Masami Doukai
IPC分类号： G01R31/08
CPC分类号： H04L45/28 , H04L45/00 , H04L45/22 , H04L45/50
摘要： A label switching router (LSR) is disclosed in which a control label switched path (LSP) is set up on a route of LSRs, in the reverse direction of traffic, for restoration and protection. Link failure, node failure, etc., are signaled on the control LSP. Further, a process is carried out in units of LSPs (Bypass Tunnels), each of which bundles LSPs having the same switching point destination of traffic. A label is assigned to every Bypass Tunnel.
摘要翻译：公开了一种标签交换路由器（LSR），其中在路由反向交换路径上建立控制标签交换路径（LSP），用于恢复和保护。链路故障，节点故障等在控制LSP上发出信号。此外，以LSP（旁路隧道）为单位进行处理，其中每个LSP捆绑具有相同交换点的目的地的LSP。每个旁路隧道都会分配一个标签。

5. 发明授权

US08199639B2 Path protection method and layer-2 switch 有权
标题翻译：路径保护方法和二层交换机
公开(公告)号：US08199639B2
公开(公告)日：2012-06-12
申请号：US11337609
申请日：2006-01-24
申请人： Masami Doukai , Ko Takatori , Kenichi Kawarai
发明人： Masami Doukai , Ko Takatori , Kenichi Kawarai
IPC分类号： H04J3/14
CPC分类号： H04L12/4645 , H04L12/462 , H04L43/0811 , H04L45/22 , H04L45/28 , H04L45/48 , H04L49/354 , H04L49/552
摘要： A method of providing path protection includes setting a working path and a protection path by identifying, as a single path, a set of a control-purpose virtual network identifier and at least one virtual network identifier that are assigned to one or more users at a section defined as a point-to-point connection in a virtual network, and switching between the working path and the protection path.
摘要翻译：提供路径保护的方法包括：通过将一组控制目的虚拟网络标识符和至少一个虚拟网络标识符识别为一个或多个用户，作为单个路径来设置工作路径和保护路径部分定义为虚拟网络中的点对点连接，并在工作路径和保护路径之间切换。

6. 发明申请

US20070086333A1 Path protection method and layer-2 switch 有权
标题翻译：路径保护方法和二层交换机
公开(公告)号：US20070086333A1
公开(公告)日：2007-04-19
申请号：US11337609
申请日：2006-01-24
申请人： Masami Doukai , Ko Takatori , Kenichi Kawarai
发明人： Masami Doukai , Ko Takatori , Kenichi Kawarai
IPC分类号： H04J3/14
CPC分类号： H04L12/4645 , H04L12/462 , H04L43/0811 , H04L45/22 , H04L45/28 , H04L45/48 , H04L49/354 , H04L49/552
摘要： A method of providing path protection includes setting a working path and a protection path by identifying, as a single path, a set of a control-purpose virtual network identifier and at least one virtual network identifier that are assigned to one or more users at a section defined as a point-to-point connection in a virtual network, and switching between the working path and the protection path.
摘要翻译：提供路径保护的方法包括：通过将一组控制目的虚拟网络标识符和至少一个虚拟网络标识符识别为一个或多个用户，作为单个路径来设置工作路径和保护路径部分定义为虚拟网络中的点对点连接，并在工作路径和保护路径之间切换。

7. 发明授权

US07957267B2 Fault detection device 有权
标题翻译：故障检测装置
公开(公告)号：US07957267B2
公开(公告)日：2011-06-07
申请号：US11155658
申请日：2005-06-20
申请人： Yasushi Sasagawa , Kenichi Kawarai , Masami Doukai , Kou Takatori
发明人： Yasushi Sasagawa , Kenichi Kawarai , Masami Doukai , Kou Takatori
IPC分类号： H04J1/16
CPC分类号： H04L41/06 , H04L1/24 , H04L43/10
摘要： A fault detection device capable of detecting network faults by itself with high accuracy in multi-vendor environments, without the need to interoperate with an associated device according to an identical protocol. A monitoring control packet transmitter generates a fault monitoring control packet and transmits the generated packet to the associated device with which the fault detection device need not interoperate to detect faults according to the same protocol. A transmit packet counter keeps count of the transmitted fault monitoring control packet. A receive packet counter receives a control packet transmitted from the associated device, and keeps count of the received control packet. A fault detector monitors the count of transmitted packets and the count of received packets and, if at least one of the counts remains unchanged for a fixed period of time, judges that a fault has occurred and sends a fault notification to outside.
摘要翻译：一种故障检测装置，能够在多供应商环境中以高精度本身检测网络故障，而不需要根据相同协议与相关设备进行互操作。监控控制分组发送机生成故障监控控制分组，并将生成的分组发送到故障检测设备不需要互操作的相关设备，以根据相同的协议检测故障。发送分组计数器保持传输的故障监视控制分组的计数。接收分组计数器接收从相关设备发送的控制分组，并且保持所接收的控制分组的计数。故障检测器监控发送的数据包的计数和接收的数据包的计数，如果至少一个计数在一段固定的时间内保持不变，则判断发生了故障，并向外部发送故障通知。

8. 发明授权

US07860031B2 Apparatus and method for processing control packet in spanning tree protocol 有权
标题翻译：在生成树协议中处理控制包的装置和方法
公开(公告)号：US07860031B2
公开(公告)日：2010-12-28
申请号：US10813792
申请日：2004-03-30
申请人： Yasushi Sasagawa , Masami Doukai , Kou Takatori
发明人： Yasushi Sasagawa , Masami Doukai , Kou Takatori
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L45/18 , H04L45/563
摘要： When a control packet is transmitted/received among devices that support a spanning tree protocol (STP), a receiving side device temporarily stores a received control packet in a buffer. When the transmission of a control packet from a transmitting side device is stopped, the control packet stored in the buffer is transferred to a STP processing unit in a specific cycle. Alternatively, the transmitting side device autonomously transmits a control packet for a specific period at specific intervals from when the STP processing unit stops its operation until it restarts the operation according to an instruction to start an automatic transmission.
摘要翻译：当在支持生成树协议（STP）的设备之间发送/接收控制分组时，接收侧设备临时将接收到的控制分组存储在缓冲器中。当发送侧装置发送控制分组时，存储在缓冲器中的控制分组以特定的周期被传送到STP处理部。或者，发送侧装置在从STP处理单元停止运行直到根据启动自动发送的指示重新启动操作的特定时间间隔自主地发送控制分组。

9. 发明授权

US07120357B2 WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal 失效
标题翻译： WDM设备，客户端设备，网络，系统和方法，用于将WDM的波长分配给客户端信号
公开(公告)号：US07120357B2
公开(公告)日：2006-10-10
申请号：US10261580
申请日：2002-10-02
申请人： Masami Doukai
发明人： Masami Doukai
IPC分类号： H04B10/08 , H04B10/24 , H04B10/20 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0227 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0279
摘要： A WDM (Wavelength Divisional Multiplex) device is provided in which a client signal having a band that is greater than a band of a wavelength used for wavelength-division multiplexing is allocated a plurality of wavelengths and is transmitted as a wavelength-division multiplexed signal. The WDM device includes a used-band detecting part for detecting a used-band that is used by the client signal supplied from a client device. The used-band is detected from a path layer of the client signal using set-up information contained in the path layer of the client signal. The WDM device also includes a mapping part for mapping the detected used-band onto wavelengths used for wavelength-division multiplexing.
摘要翻译：提供了一种WDM（波分复用）装置，其中具有大于波分复用的波长带的客户端信号被分配多个波长并作为波分复用信号发送。 WDM设备包括用于检测由客户端设备提供的客户端信号使用的使用频带的使用频带检测部分。使用客户端信号的路径层中包含的设置信息，从客户端信号的路径层检测使用频带。 WDM设备还包括用于将检测到的使用频带映射到用于波分复用的波长上的映射部分。

10. 发明申请

US20060203735A1 Bridge apparatus and control packet processing apparatus in a spanning tree protocol network 审中-公开
标题翻译：桥接设备和控制分组处理设备在生成树协议网络中
公开(公告)号：US20060203735A1
公开(公告)日：2006-09-14
申请号：US11168366
申请日：2005-06-29
申请人： Kou Takatori , Yasushi Sasagawa , Masami Doukai
发明人： Kou Takatori , Yasushi Sasagawa , Masami Doukai
IPC分类号： H04L12/28 , G01R31/08 , G08C15/00 , H04L12/26 , G06F11/00 , H04J3/14 , H04J1/16 , H04L1/00 , H04L12/56
CPC分类号： H04L12/462 , H04L45/28
摘要： A bridge apparatus, which enables communications to continue even if a fault or a disability of operation occurs, causing the spanning tree protocol to become inoperable and, furthermore, provides a network capable of keeping track of status changes thereof, are provided by a bridge apparatus constituting a network connected with other bridge apparatus, comprising an STP protocol processing unit for carrying out a spanning tree protocol; a port for transmitting and receiving a bridge protocol data unit with the other bridge apparatus; a fault detection unit for detecting a fault of the spanning tree protocol by monitoring the STP protocol processing unit; and a for-fault time BPDU transmission unit for transmitting a for-fault time bridge protocol data unit to the other bridge apparatus by way of the port if the fault detection unit detects a fault, or a disability of operation, of the spanning tree protocol.
摘要翻译：一种桥接装置，即使发生故障或操作障碍，也能够使通信继续，导致生成树协议变得不可操作，并且还提供能够跟踪其状态改变的网络，由桥接设备提供构成与其他桥接装置连接的网络，包括用于执行生成树协议的STP协议处理单元; 用于与另一个桥接设备一起发送和接收桥接协议数据单元的端口; 故障检测单元，用于通过监视STP协议处理单元来检测生成树协议的故障; 以及用于故障检测单元检测生成树协议的故障或操作的无效的故障时间BPDU传输单元，用于通过端口将故障时桥接协议数据单元发送到另一桥接设备。

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