公开(公告)号：US09369359B2

公开(公告)日：2016-06-14

申请号：US14344367

申请日：2012-09-10

申请人： Masaki Umayabashi ,  Akira Sakurai ,  Zhenlong Cui

发明人： Masaki Umayabashi ,  Akira Sakurai ,  Zhenlong Cui

IPC分类号： H04L1/00 ,  H04L12/26

CPC分类号： H04L43/0811 ,  H04L43/0852

摘要： A transmission source node transmits diagnostic frames where a TTL value is set to the number of hops that is counted until an intermediate node. A relay node decrements the TTL value of the received diagnostic frames, counts the number of diagnostic frames where the decremented TTL value is 0, and recognizes continuity between the transmission source node and the relay node based on the number of transmitted diagnostic frames transmitted from the transmission source node and the number of diagnostic frames where the decremented TTL value is 0.

摘要翻译： 传输源节点发送诊断帧，其中TTL值被设置为直到中间节点计数的跳数。 中继节点递减接收到的诊断帧的TTL值，对减少的TTL值为0的诊断帧数进行计数，并根据从发送源节点和中继节点发送的诊断帧的数量来识别发送源节点与中继节点之间的连续性 传输源节点和递减TTL值为0的诊断帧数。

公开(公告)号：US20120219003A1

公开(公告)日：2012-08-30

申请号：US13505546

申请日：2010-11-02

申请人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

发明人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

IPC分类号： H04L12/56

CPC分类号： H04L12/26 ,  H04L43/00 ,  H04L43/0817 ,  H04L45/50 ,  H04L47/286 ,  H04L49/30 ,  H04L49/555

摘要： [Issues] To provide a node (transfer device) which can process an OAM frame within an output line card.[Solution Method]A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.

摘要翻译： [问题]提供可以处理输出线卡内的OAM帧的节点（传送装置）。 [解决方案]根据本发明的节点在MPLS（多协议标签交换）网络中使用，并且节点包括输入单元，其接收包括TTL（生存时间）的OAM（操作管理和维护）帧， 在节点外部，以及将OAM帧发送到节点外部的输出单元，其中，输入单元将TTL设置为特定值，并且在接收到OAM帧的终止目的地的情况下将接收到的OAM帧发送到输出单元 从外部指示是节点，并且所接收的OAM帧将被发送到输出单元，并且输出单元终止从输入单元发送的OAM帧。

公开(公告)号：US08897308B2

公开(公告)日：2014-11-25

申请号：US13505546

申请日：2010-11-02

申请人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

发明人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

IPC分类号： H04L12/26 ,  H04L12/723

CPC分类号： H04L12/26 ,  H04L43/00 ,  H04L43/0817 ,  H04L45/50 ,  H04L47/286 ,  H04L49/30 ,  H04L49/555

摘要： A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.

摘要翻译： 根据本发明的节点用于MPLS（多协议标签交换）网络中，并且节点包括输入单元，其从节点外部接收包括TTL（生存时间）的OAM（操作管理和维护）帧 以及将OAM帧发送到节点外部的输出单元，其中，所述输入单元将所述TTL设置为特定值，并且在从外部指示的OAM帧指示的终止目的地为所述输出单元的情况下将所接收的OAM帧发送到所述输出单元 节点和接收的OAM帧将被发送到输出单元，并且输出单元终止从输入单元发送的OAM帧。

公开(公告)号：US20140341044A1

公开(公告)日：2014-11-20

申请号：US14344367

申请日：2012-09-10

申请人： Masaki Umayabashi ,  Akira Sakurai ,  Zhenlong Cui

发明人： Masaki Umayabashi ,  Akira Sakurai ,  Zhenlong Cui

IPC分类号： H04L12/26

CPC分类号： H04L43/0811 ,  H04L43/0852

摘要： A transmission source node transmits diagnostic frames where a TTL value is set to the number of hops that is counted until an intermediate node. A relay node decrements the TTL value of the received diagnostic frames, counts the number of diagnostic frames where the decremented TTL value is 0, and recognizes continuity between the transmission source node and the relay node based on the number of transmitted diagnostic frames transmitted from the transmission source node and the number of diagnostic frames where the decremented TTL value is 0.

摘要翻译： 传输源节点发送诊断帧，其中TTL值被设置为直到中间节点计数的跳数。 中继节点递减接收到的诊断帧的TTL值，对减少的TTL值为0的诊断帧数进行计数，并根据从发送源节点和中继节点发送的诊断帧的数量来识别发送源节点与中继节点之间的连续性 传输源节点和递减TTL值为0的诊断帧数。

公开(公告)号：US08711686B2

公开(公告)日：2014-04-29

申请号：US13219804

申请日：2011-08-29

申请人： Kazuo Takagi ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

发明人： Kazuo Takagi ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

IPC分类号： H04L12/26 ,  H04L12/56 ,  H04L1/22 ,  H04J14/02

CPC分类号： H04L45/28 ,  H04J14/0294 ,  H04J14/0295 ,  H04L1/22 ,  H04L41/0659 ,  H04L41/0663 ,  H04L45/22

摘要： Between a first pair of termination nodes, a first current-use packet transmission path and at least one first spare packet transmission path are defined. Between a second pair of termination nodes, a second current-use packet transmission path and at least one second spare packet transmission path are defined. When no network fault occurs, packets are transmitted between the pairs of nodes in a 1:1 transfer mode in which the pairs transfer packets via both current-use packet transmission paths only. When a network fault occurs in the first current-use packet transmission path, both transmissions are switched from a 1:1 transfer mode to a 1+1 transfer mode, in which the first pair of nodes transfer packets by using the first current-use packet transmission path and the first spare packet transmission path, and the second pair transfer packets by using the second current-use packet transmission path and the second spare packet transmission path.

摘要翻译： 在第一对终端节点之间，定义第一当前使用分组传输路径和至少一个第一备用分组传输路径。 在第二对终端节点之间，定义第二当前使用分组传输路径和至少一个第二备用分组传输路径。 当没有发生网络故障时，分组以1：1传输模式在两对节点之间传输，其中对只通过当前使用的分组传输路径传输分组。 当在第一当前使用分组传输路径中出现网络故障时，两个传输从1：1传输模式切换到1 + 1传输模式，其中第一对节点通过使用第一当前使用 分组传输路径和第一备用分组传输路径，并且第二对传输分组通过使用第二当前使用分组传输路径和第二备用分组传输路径。

公开(公告)号：US20120051214A1

公开(公告)日：2012-03-01

申请号：US13219804

申请日：2011-08-29

申请人： KAZUO TAKAGI ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

发明人： KAZUO TAKAGI ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

IPC分类号： G06F11/00

CPC分类号： H04L45/28 ,  H04J14/0294 ,  H04J14/0295 ,  H04L1/22 ,  H04L41/0659 ,  H04L41/0663 ,  H04L45/22

摘要： A packet transmission system includes a plurality of nodes connected by a packet transmission path. A current-use packet transmission path is used as the packet transmission path when a fault does not occur, and a spare packet transmission path is used as the packet transmission path when the fault has occurred. Each of the plurality of nodes includes: a transfer mode switching section configured to switch a transfer mode when transferring a received packet to a destination node to a 1:1 transfer mode or a 1+1 transfer mode, wherein the packet is transferred by the current-use packet transmission path in the 1:1 transfer mode, but the spare packet transmission path is not used, and the packet is transferred by the current-use packet transmission path and the spare packet transmission path in the 1+1 transfer mode; a path controller configured to instruct the transfer mode switching section to switch the transfer mode; a packet transferring section configured to transfer the received packet in the 1:1 transfer mode when the fault does not occur in the packet transmission network; and a reception path selecting section configured to select one of the packets received from the current-use packet transmission path and the spare packet transmission path in the 1+1 transfer mode.

摘要翻译： 分组传输系统包括通过分组传输路径连接的多个节点。 当发生故障时，使用当前使用的分组传输路径作为分组传输路径，并且在发生故障时使用备用分组传输路径作为分组传输路径。 多个节点中的每一个包括：传送模式切换部，被配置为当将接收到的分组传送到目的地节点时转换为1：1传输模式或1 + 1传输模式，其中分组由 当前使用的分组传输路径为1：1传输模式，但是备用分组传输路径不被使用，分组由当前使用的分组传输路径和备用分组传输路径以1 + 1传输模式传输 ; 路径控制器，被配置为指示传送模式切换部切换传送模式; 分组传送部，被配置为当所述分组传输网络中不发生故障时以1：1传输模式传送所接收的分组; 以及接收路径选择部，被配置为在1 + 1传送模式中选择从当前使用分组传输路径接收的分组和备用分组传输路径。

公开(公告)号：US08737401B2

公开(公告)日：2014-05-27

申请号：US13351417

申请日：2012-01-17

申请人： Zhenlong Cui ,  Kazuo Takagi ,  Akira Sakurai

发明人： Zhenlong Cui ,  Kazuo Takagi ,  Akira Sakurai

IPC分类号： H04L12/28

CPC分类号： H04L45/50

摘要： A communication apparatus comprises: a memory unit which correlates a label assigned to a packet and an address of a source of the packet, and memorizes them as an entry; a receiving unit which receives a packet from a network; a learning unit which judges whether or not there exists an entry corresponding to the received packet in the memory unit, and in case there exists no entry corresponding to the received packet in the memory unit, stores a label assigned to the received packet and an address of a source of the received packet in the memory unit; and a processing unit which, in case there exists an entry corresponding to the received packet in the memory unit, assigns an address corresponding to the received packet to the received packet.

摘要翻译： 通信装置包括：存储单元，其将分配给分组的标签与分组的源的地址相关联，并将其存储为条目; 从网络接收分组的接收单元; 判断在存储单元中是否存在与接收到的分组相对应的条目的学习单元，以及在存储单元中不存在与接收到的分组相对应的条目的情况下，存储分配给接收分组的标签和地址 在所述存储器单元中接收到的分组的源; 以及处理单元，在存在与存储单元中的接收到的分组相对应的条目的情况下，将与所接收的分组相对应的地址分配给所接收的分组。

公开(公告)号：US20120189011A1

公开(公告)日：2012-07-26

申请号：US13351417

申请日：2012-01-17

申请人： ZHENLONG CUI ,  Kazuo Takagi ,  Akira Sakurai

发明人： ZHENLONG CUI ,  Kazuo Takagi ,  Akira Sakurai

IPC分类号： H04L12/56

CPC分类号： H04L45/50

摘要： A communication apparatus comprises: a memory unit which correlates a label assigned to a packet and an address of a source of the packet, and memorizes them as an entry; a receiving unit which receives a packet from a network; a learning unit which judges whether or not there exists an entry corresponding to the received packet in the memory unit, and in case there exists no entry corresponding to the received packet in the memory unit, stores a label assigned to the received packet and an address of a source of the received packet in the memory unit; and a processing unit which, in case there exists an entry corresponding to the received packet in the memory unit, assigns an address corresponding to the received packet to the received packet.

摘要翻译： 通信装置包括：存储单元，其将分配给分组的标签与分组的源的地址相关联，并将其存储为条目; 从网络接收分组的接收单元; 判断在存储单元中是否存在与接收到的分组相对应的条目的学习单元，以及在存储单元中不存在与接收到的分组相对应的条目的情况下，存储分配给接收分组的标签和地址 在所述存储器单元中接收到的分组的源; 以及处理单元，在存在与存储单元中的接收到的分组相对应的条目的情况下，将与所接收的分组相对应的地址分配给所接收的分组。

公开(公告)号：US20140347979A1

公开(公告)日：2014-11-27

申请号：US14344651

申请日：2012-06-05

申请人： Hiroshi Tanaka ,  Masaki Umayabashi ,  Akira Sakurai

发明人： Hiroshi Tanaka ,  Masaki Umayabashi ,  Akira Sakurai

IPC分类号： H04L12/24

CPC分类号： H04L41/0654 ,  H04L41/0686 ,  H04L41/069 ,  H04L45/22 ,  H04L45/28 ,  H04L45/62 ,  H04L69/40

摘要： An AIS management table 14 is storing entries having, as fields, an input port connected to a section, a section endpoint serving as an input destination, a path over which an AIS frame is to be output, and an output port connected to a section. When a failure is detected in a section, an AIS processing unit 19 searches an AIS management table 14 using, as a key, an input port or section endpoint involved in the location of the failure, inserts retrieved path information into an AIS frame for failure detection, and determines that a retrieved output port is the output destination of the AIS frame. A frame transfer unit 12 receives the AIS frame and information about the output port from the AIS processing unit 19 and transmits the AIS frame from the output port to an adjacent section.

摘要翻译： AIS管理表14存储具有连接到一部分的输入端口，用作输入目的地的部分端点，要输出AIS帧的路径的字段和连接到部分的输出端口的条目 。 当在一个部分中检测到故障时，AIS处理单元19使用涉及故障位置的输入端口或部分端点作为密钥来搜索AIS管理表14，将检索到的路径信息插入到AIS帧中以用于故障 检测并确定所检索的输出端口是AIS帧的输出目的地。 帧传送单元12从AIS处理单元19接收AIS帧和关于输出端口的信息，并将AIS帧从输出端口发送到相邻区段。

公开(公告)号：US20140146686A1

公开(公告)日：2014-05-29

申请号：US14129075

申请日：2012-06-12

申请人： Akira Sakurai ,  Hiroshi Tanaka ,  Masaki Umayabashi

发明人： Akira Sakurai ,  Hiroshi Tanaka ,  Masaki Umayabashi

IPC分类号： H04L12/26

CPC分类号： H04L43/0829 ,  H04L43/0835 ,  H04L43/0841 ,  H04L43/0852 ,  H04L43/106

摘要： In a transmission system capable of measuring packet loss ratio between arbitrary devices upon a transmission path without increasing bandwidth of an OAM frame band, a plurality of transmission devices which have been disposed upon a transmission path are provided with a frame analysis unit which receives data frames so as to analyze the type of the data frames, a count processing unit which stores the number of received frames included in the data frames into storage module provided beforehand, an output line end portion which outputs the data frames, and an OAM processing unit which calculates the packet loss ratio in the transmission path using the number of received frames. The frame analysis unit has a function which, if the data frames are OAM frames, copies the data frames and the OAM processing unit has a function which calculates the packet loss ratio using the copied OAM frames.

摘要翻译： 在能够测量传输路径上的任意设备之间的分组丢失率而不增加OAM帧频带宽的传输系统中，设置在传输路径上的多个传输设备设置有帧分析单元，其接收数据帧 为了分析数据帧的类型，将数据帧中包含的接收帧的数量存储在预先提供的存储模块中的计数处理单元，输出数据帧的输出线路端部分和OAM处理单元， 使用接收帧的数量来计算传输路径中的丢包率。 帧分析单元具有这样的功能：如果数据帧是OAM帧，则复制数据帧，并且OAM处理单元具有使用复制的OAM帧来计算分组丢失率的功能。