公开(公告)号：US08554904B2

公开(公告)日：2013-10-08

申请号：US12689963

申请日：2010-01-19

申请人： Takeshi Yasuie ,  Yuji Nomura ,  Taichi Sugiyama

发明人： Takeshi Yasuie ,  Yuji Nomura ,  Taichi Sugiyama

IPC分类号： G06F15/173

CPC分类号： H04L41/0677 ,  H04L41/046

摘要： An abnormal point locating method includes: a link primary abnormality judgment procedure that acquires information on a link through which each observation flow passes, locates a link through which an observation flow observed at an observation point passes, and judges whether the located link is normal or abnormal based on the observation flow; and a link secondary abnormality judgment procedure that judges a probability of abnormality based on a result of the link primary abnormality judgment procedure by using a connection relationship as seen from each observation point.

摘要翻译： 异常点定位方法包括：获取每个观察流通过的链路的信息的链路原始异常判断过程，定位观察点观察到的观察流通过的链路，并判断所述链路是否正常， 基于观察流量异常; 以及通过使用从各观察点观察的连接关系，基于链接原始异常判断过程的结果来判断异常的可能性的链接二次异常判断程序。

公开(公告)号：US20130039189A1

公开(公告)日：2013-02-14

申请号：US13532873

申请日：2012-06-26

申请人： Taichi SUGIYAMA ,  Takeshi YASUIE ,  Yuji NOMURA

发明人： Taichi SUGIYAMA ,  Takeshi YASUIE ,  Yuji NOMURA

IPC分类号： H04L12/26

CPC分类号： H04L61/2061 ,  H04L43/50 ,  H04L61/2557

摘要： A computer-readable medium stores a testing program that causes a computer having a storage device storing netmask lengths and address block utilization information associated with address blocks, to execute a process that includes acquiring first packets transmitted to a first apparatus, first addresses being regarded as transmission sources; referring to the storage device and acquiring a count of address blocks to which the first addresses belong and a netmask length; calculating based on the acquired address block count and netmask length, the netmask length less a bit count according to the number of the first addresses; referring to the storage device and selecting from among unused address blocks, an address block having a netmask length less than or equal to the calculated netmask length; and transmitting to a second apparatus, second packets obtained by setting the transmission sources of the first packets to second addresses in the selected address block.

摘要翻译： 计算机可读介质存储使具有存储设备的存储设备的计算机存储与地址块相关的网络掩码长度和地址块利用信息的测试程序来执行包括获取发送到第一设备的第一分组的处理，第一地址被视为 传输源 参考存储设备并获取第一地址所属的地址块的计数和网络掩码长度; 基于获取的地址块计数和网络掩码长度计算，根据第一个地址的数量，网络掩码长度减去一个比特数; 参考存储设备并从未使用的地址块中选择具有小于或等于所计算的网络掩码长度的网络掩码长度的地址块; 以及向所述第二装置发送通过将所述第一分组的发送源设置为所选地址块中的第二地址而获得的第二分组。

公开(公告)号：US08355330B2

公开(公告)日：2013-01-15

申请号：US12632022

申请日：2009-12-07

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/26

CPC分类号： H04L43/0888 ,  H04L43/0864 ,  H04L43/10

摘要： A band measurement method for measuring a band available for communication with a target device connected via a network includes: transmitting a first request having a first data size and requesting a response having a fixed size to the target device via the network; determining a first time between the transmitting of the first request and the receipt of the response upon receipt of the response; transmitting a second request having a second data size and requesting a response having the fixed size to the target device via the network; determining a second time between transmitting of the second request and the receipt of the response upon receipt of the response; and calculating a first communication band available for transmitting data to the target device by dividing the difference between the first and second data sizes by the difference between the first and second times.

摘要翻译： 一种用于测量可用于经由网络连接的目标设备进行通信的频带的频带测量方法，包括：经由网络向目标设备发送具有第一数据大小并且请求具有固定大小的响应的第一请求; 确定在接收到所述响应之后所述第一请求的发送和所述响应的接收之间的第一时间; 通过网络发送具有第二数据大小的第二请求并向目标设备请求具有固定大小的响应; 在接收到所述响应之后确定所述第二请求的发送和所述响应的接收之间的第二时间; 以及通过将所述第一和第二数据大小之间的差除以所述第一和第二次之间的差来计算可用于向所述目标设备发送数据的第一通信频带。

公开(公告)号：US08243606B2

公开(公告)日：2012-08-14

申请号：US12625722

申请日：2009-11-25

申请人： Yuji Nomura ,  Takeshi Yasuie

发明人： Yuji Nomura ,  Takeshi Yasuie

IPC分类号： H04L1/00

CPC分类号： H04L12/2854 ,  H04L29/12339 ,  H04L43/00 ,  H04L43/0829 ,  H04L61/2503 ,  H04L69/40

摘要： A device includes a storage unit that stores in a predetermined unit an identifier acquired from a packet transmitted from a transmitting device in association with a source address. The transmitting device receives from each terminal device connected communicatable via a network a packet including a source address, an identifier generated by adding a numerical value every time a packet is sent by the terminal device, and a session ID, and converts and transmits the source address. The transmitting device and the terminal device are connected to the device via a different network. The device also includes a determining unit that determines whether the identifier stored has monotonically increased; and a detector that detects a source indicated by a certain source address to be the transmitting device, if the determining unit determines that the identifier for the certain source address has not monotonically increased.

摘要翻译： 一种设备包括存储单元，其以预定单元存储从与源地址相关联的从发送设备发送的分组获取的标识符。 发送装置从各个终端装置接收通过网络通信的包含源地址的分组，通过在终端装置每次发送分组时增加数值而生成的标识符和会话ID，并将该源 地址。 发送设备和终端设备经由不同的网络连接到设备。 该设备还包括确定单元，其确定所存储的标识符是否单调增加; 以及如果所述确定单元确定所述特定源地址的标识符没有单调增加，则检测由某个源地址指示的源作为所述发送设备的检测器。

公开(公告)号：US20120155496A1

公开(公告)日：2012-06-21

申请号：US13230916

申请日：2011-09-13

申请人： Takeshi Yasuie ,  Yuji Nomura ,  Taichi Sugiyama

发明人： Takeshi Yasuie ,  Yuji Nomura ,  Taichi Sugiyama

IPC分类号： H04J3/06 ,  H04L12/26

CPC分类号： H04L43/50

摘要： A test information obtaining unit captures an actual transaction from a pre-operation server and stores it in a pre-operation packet storing unit. A time synchronization control section synchronizes the time of a post-operation server with a time of the acquisition times of the captured packets. After performing this time synchronization, a test implementation section performs a test by sequentially transmitting the packets to the post-operation server, thus making responses of the pre-operation server and the post-operation server the same.

摘要翻译： 测试信息获取单元从预操作服务器捕获实际交易并将其存储在预操作分组存储单元中。 时间同步控制部分将后处理服务器的时间与捕获的分组的获取时间的时间同步。 在执行该时间同步之后，测试实现部分通过将分组顺序地发送到后操作服务器来执行测试，从而使得操作前服务器和后操作服务器的响应相同。

公开(公告)号：US20100118710A1

公开(公告)日：2010-05-13

申请号：US12607214

申请日：2009-10-28

申请人： Jun Ogawa ,  Takeshi Yasuie ,  Makoto Kubota

发明人： Jun Ogawa ,  Takeshi Yasuie ,  Makoto Kubota

IPC分类号： H04L12/26

CPC分类号： H04L41/0677 ,  H04L41/12

摘要： A network failure detecting method for detecting a failure of a network including a number of transferring devices by tracing data flow rates of the transferring devices based on physical topologies of the transferring devices for the network, composing a group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, as one virtual transferring device; and replacing physical topologies of the group of the transferring devices adjacent to one another, data flow rates of which have failed to be obtained, with a physical topology of the composed virtual transferring device.

摘要翻译： 一种网络故障检测方法，用于通过基于所述网络的传送设备的物理拓扑来跟踪传送设备的数据流速来检测包括多个传送设备的网络的故障，构成彼此相邻的一组传送设备 作为一个虚拟传送设备，其数据流速未能获得; 并且通过组合的虚拟传送设备的物理拓扑来替换彼此相邻的传输设备的组的物理拓扑，其数据流速不能获得。

公开(公告)号：US20090316597A1

公开(公告)日：2009-12-24

申请号：US12550905

申请日：2009-08-31

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/26

CPC分类号： H04L45/02

摘要： An information processing apparatus performs a communication in a communication network using packets. The communication network includes a relaying device having a function of acquiring traffic information of a packet that the relaying device relays. The information processing apparatus includes a transmission unit configured to transmit a packet to a specific node as a communication target; and a node position determining unit configured to determine a position of the specific node by acquiring the traffic information from the relaying device by which the packet is relayed in the communication network, analyzing the traffic information, and monitoring a flow of the packet with respect to the specific node.

公开(公告)号：US07607049B2

公开(公告)日：2009-10-20

申请号：US11413154

申请日：2006-04-28

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： G06F11/00

CPC分类号： H04L12/66

摘要： A L2 loop failure location generated in any one of a plurality of search target apparatuses disposed in network is detected in a short time. A network failure location detecting apparatus executes the steps of broadcasting packets with a plurality of different source MAC addresses; acquiring statistical information that is information of a learning port of the plurality of different source MAC addresses learned by each of the plurality of search target apparatuses; finding whether the number of the learning ports of the plurality of different source MAC addresses is one or two from the acquired statistical information; and determining that the L2 loop failure location is the search target apparatus including two learning ports of the plurality of different source MAC addresses.

摘要翻译： 在短时间内检测在网络中设置的多个搜索对象装置中的任一个中生成的L2环路故障位置。 网络故障位置检测装置执行广播具有多个不同源MAC地址的分组的步骤; 获取作为所述多个搜索对象装置中的每一个所学习的所述多个不同源MAC地址的学习端口的信息的统计信息; 从获取的统计信息中确定多个不同源MAC地址的学习端口的数量是否为一个或两个; 以及确定所述L2环路故障位置是包括所述多个不同源MAC地址的两个学习端口的所述搜索目标设备。

公开(公告)号：US07385930B2

公开(公告)日：2008-06-10

申请号：US10974523

申请日：2004-10-27

申请人： Takeshi Yasuie ,  Yuji Nomura ,  Satoshi Nojima

发明人： Takeshi Yasuie ,  Yuji Nomura ,  Satoshi Nojima

IPC分类号： H04L12/26

CPC分类号： H04L47/10 ,  H04L47/13 ,  H04L47/22 ,  H04L2001/0097

摘要： In a relay device or the like in which a speed changes from a high speed to a low speed, a packet residence (packet transfer wait) occurs when a packet string in which packet intervals are shortened arrives. When a packet discard occurs before passing through the relay device or the like, a packet interval having been lengthened by the packet discard is shortened by the relay device or the like for transferring packets. When a packet discard occurs after passing through the relay device or the like, a packet interval having been lengthened by the packet discard remains unshortened for transferring packets. Therefore, by observing at terminals the packet discard and the packet interval on the occasion of the packet discard, whether the packet discard has occurred in the high speed section or the low speed section is specified.

摘要翻译： 在速度从高速变化到低速的中继装置等中，当分组间隔被缩短的分组串到达时，发生分组驻留（分组传送等待）。 当在通过中继装置等之前发生分组丢弃时，由分组丢弃延长的分组间隔由传送分组的中继装置等缩短。 当在通过中继装置等之后发生分组丢弃时，已经被分组丢弃延长的分组间隔保持不被用于传送分组。 因此，通过在终端观察分组丢弃和分组丢弃时的分组间隔，是否指定了在高速部分或低速部分中发生了分组丢弃。

公开(公告)号：US20060280133A1

公开(公告)日：2006-12-14

申请号：US11257748

申请日：2005-10-25

申请人： Yuji Nomura ,  Takeshi Yasuie

发明人： Yuji Nomura ,  Takeshi Yasuie

IPC分类号： H04L5/14

CPC分类号： H04L1/243 ,  H04L12/40136

摘要： A full duplex/half duplex mismatch is detected by a full duplex/half duplex mismatch detecting apparatus connected through a network to a host. The loss rate of the transmission of a check messages is compared according to a sequential transmission pattern and the loss rate of the transmission of the check message according to divided transmission patterns by the full duplex/half duplex mismatch detecting apparatus, and if the loss rate of the transmission of the check messages according to the sequential transmission pattern is the larger, a full duplex/half duplex mismatch is determined to be present on the network path.