Patent application number | Description | Published |
20090190593 | PACKET ANALYSIS METHOD, PACKET ANALYSIS APPARATUS, RECORDING MEDIUM STORING PACKET ANALYSIS PROGRAM - A packet analysis apparatus analyzes content of communication obtained as a result of monitoring or capturing a packet passing through a network. The apparatus has a unit of acquiring source or destination address information from a network layer packet header. The apparatus has a unit of acquiring from the network layer packet header an identifier for which a value that increases monotonously with each sending for each source or destination address information is set. The apparatus has a unit of searching and acquiring an identifier corresponding to address information in a current packet from a storage part holding an identifier in a previous packet corresponding to source or destination address information. The apparatus has a unit of comparing the identifier in the previous packet acquired and the identifier in the current packet and determining that reordering occurs when the identifier in the current packet is smaller. | 07-30-2009 |
20090296597 | DETECTION PROGRAM, RELAY DEVICE, AND DETECTING METHOD - Only when a request formed of a plurality of request packets obtained by dividing the request is reconstructed, the request is transmitted to a survey target node that returns a response formed of a plurality of response packets obtained by dividing the response. When no response packet has been received at all from the survey target node, it is determined that any of the request packets has been discarded on a first route from a surveying node as a transmission source of the request to the survey target node. When one or more response packets have been received from the survey target node but the response cannot be reconstructed, it is determined that any of the response packets transmitted from the survey target node has been discarded on a second route from the survey target node to the surveying node as the transmission source of the request packets. | 12-03-2009 |
20090316597 | INFORMATION PROCESSING APPARATUS - 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. | 12-24-2009 |
20090316599 | INFORMATION PROCESSING APPARATUS - 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. | 12-24-2009 |
20100067549 | Information Acquisition Device and Method - 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. | 03-18-2010 |
20100103946 | PACKET CAPTURING DEVICE - A next sequence number, which is a sequence number that a next packet should have, is compared with the sequence number of a current packet, an identifier of a previous packet is compared with the identifier of the current packet, and a delay is judged to be a simple delay when the next sequence number matches the sequence number of the current packet and the identifier of the previous packet is followed by the identifier of the current packet. Or the delay is judged to be caused by a retransmission when the identifier of the previous packet is not followed by the identifier of the current packet. | 04-29-2010 |
20100118710 | NETWORK FAILURE DETECTING METHOD AND DEVICE - 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. | 05-13-2010 |
20100142395 | BAND MEASUREMENT METHOD AND STORAGE MEDIUM - 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. | 06-10-2010 |
20100185762 | ABNORMAL POINT LOCATING APPARATUS, METHOD, AND STORAGE MEDIUM - 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. | 07-22-2010 |
20100322081 | ABNORMALITY LOCATING METHOD AND APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM - An abnormality locating apparatus locates an abnormal location in a network. An abnormal location judging part judges a normality or abnormality of a link based on a normality or abnormality of an observation flow, by acquiring information of links through which each observation flow passes, from a network route information storage that stores passing route information of observation flows passing through the links. A diagnosis accuracy judging part judges that an accuracy of judging the normality or abnormality of a connecting link connected to a first node deteriorates, by acquiring links connected to each relay node as connecting links from a relay node connecting link information storage that stores connecting link information of each relay node, and judging that a relay node having all connecting links thereof that are abnormal is the first node having all observation flows passing therethrough that are abnormal. | 12-23-2010 |
20110058482 | MONITORING APPARATUS AND MONITORING METHOD - A monitoring apparatus for monitoring packet communication by a plurality of information processing apparatuses. The monitoring apparatus includes a receiving unit for receiving packets transmitted from the plurality of information processing apparatuses, a storage unit for storing a first identification value of a first packet and a first transmission source address of the first packet, and a processing unit for comparing a second identification value of a second packet with the first identification value of the first packet when a second transmission source address of the second packet matches the first transmission source address of the first packet to detect duplication of IP addresses when a difference between the first identification value and the second identification value exceeds a predetermined value. | 03-10-2011 |
20110075582 | DELAY TIME MEASUREMENT APPARATUS, STORAGE MEDIUM STORING DELAY TIME MEASUREMENT PROGRAM AND NETWORK SYSTEM - A CPU executes a process including determining a core node among plural relay nodes on a basis of route information, acquiring a first and a second packets flowing between a server and a terminal apparatus, the second packet being transmitted on a basis of the first packet, calculating a first delay time on a basis of the first and the second packets, the first delay time relating to packet transmission between the server and the terminal apparatus, transmitting a third packet to the core node, receiving a response to the third packet from the core node, calculating a second delay time on a basis of the third packet and the response, the second delay time being a delay time of the core node, and calculating a third delay time being a delay time of an end node on a basis of the first and the second delay times. | 03-31-2011 |
20110149805 | NETWORK GROUP DETERMINATION DEVICE AND METHOD, AND STORAGE MEDIUM OF STORING NETWORK GROUP DETERMINATION PROGRAM - A network group determination device includes an acquisition section, a comparison section and a determination section. The acquisition section acquires first communication information representing a state of communication between a first repeater on a network and a specific network group on the network, and second communication information representing a state of communication between a second repeater on the network and the network group. The comparison section makes a comparison of a difference between the first communication information and the second communication information to third communication information between the first repeater and the second repeater. The determination section makes, according to a result of the comparison by the comparison section, a determination of a position of the network group with respect to the first repeater and the second repeater. | 06-23-2011 |
20110228684 | COMPUTER PRODUCT, APPARATUS, AND METHOD FOR DEVICE TESTING - A non-transitory computer-readable recording medium storing therein a test program causing a computer to execute a process including acquiring a first packet and a second packet sent to a first device; transmitting, based on the acquired first packet, a third packet obtained by setting a destination of the first packet to a second device; and transmitting, based on the acquired second packet, a fourth packet obtained by setting a destination of the second packet to the second device, the fourth packet being transmitted upon elapse of a period from the transmission of the third packet and equal to a time interval between acquisition of the first packet and acquisition of the second packet. | 09-22-2011 |
20110307768 | ERROR DETECTION DEVICE, COMMUNICATION ERROR DETECTION SYSTEM, COMMUNICATION ERROR DETECTION METHOD - An error detection device includes a control unit configured to identify two links that connects a relay communication device to two communication devices as a link pair, identify, from pluralities of inspection devices under the respective two links, a number of inspection devices corresponding to the number N of links where communication errors simultaneously occur (N is an integer of 1 or more) plus 1, determine (N+1) number of inspection flows between the (N+1) number of inspection device pairs, and generate inspection coverage information that includes the determined inspection flows. The error detection device includes a storage unit that stores the inspection coverage information, and a communication unit that sends the inspection coverage information to one device of the inspection device pairs. | 12-15-2011 |
20120026905 | COMPUTER PRODUCT, TESTING APPARATUS, AND TESTING METHOD - A computer-readable medium stores a program causing a computer to execute acquiring a transmission interval for packets transmitted from a first-source to a first-destination; judging whether a given packet, among the packets whose destination has been changed to a second-destination are transmitted from a second-source, is a designated-packet requiring acknowledgment for the preceding packet; transmitting the given packet after acknowledgment is received, if acknowledgment is required; correcting an interval between the designated-packet and the subsequent packet, to be shorter than intervals for 2 packets transmitted from the first-source to the first-destination and corresponding to the designated-packet and the subsequent packet, if an interval between transmission of the preceding packet and transmission of the designated-packet exceeds intervals for 2 packets transmitted from the first-source to the first-destination and corresponding to the preceding packet and the designated-packet; and transmitting the subsequent packet from the second-source to the second-destination, at the corrected interval. | 02-02-2012 |
20120155496 | TESTING DEVICE, TESTING METHOD, AND COMPUTER READABLE STORAGE MEDIUM - 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. | 06-21-2012 |
20120158895 | TESTING APPARATUS, TESTING METHOD AND COMPUTER-READABLE STORAGE MEDIUM - A testing apparatus includes a storage to store a communication log including a communication time and a response confirmation number of packets, and a processing circuit to generate an additional packet having a communication time and a response confirmation number between two consecutive packets having an interval greater than or equal to a threshold value in the communication log. The interval may be an interval of the communication times of or, an interval of the response confirmation numbers of the two consecutive packets. The testing apparatus also includes an interface unit to send the packets stored in the storage and the additional packet to a destination at a time interval based on communication times thereof. | 06-21-2012 |
20120240225 | VERIFICATION APPARATUS AND VERIFICATION METHOD - A verification apparatus for verifying a verified apparatus corresponding to a first apparatus included in a plurality of information processing apparatuses includes a storage and a processor. The storage stores captured data acquired by capturing data transmitted and received among the plurality of information processing apparatuses. The processor receives first data transmitted from the verified apparatus. The first data is destined for a second apparatus included in the plurality of information processing apparatuses. The processor extracts, from the storage, second data transmitted from the second apparatus in response to third data transmitted from the first apparatus to the second apparatus. The third data corresponds to the first data. The processor transmits the extracted second data to the verified apparatus. | 09-20-2012 |
20130039189 | COMPUTER PRODUCT, TESTING APPARATUS, AND TESTING METHOD - 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. | 02-14-2013 |
20130179564 | COMPUTER-READABLE RECORDING MEDIUM, INFORMATION PROCESSING METHOD, AND INFORMATION PROCESSING APPARATUS - A computer-readable recording medium having stored therein a program for causing a computer to execute a digital signature process, wherein the digital signature process includes distributing packets to machines based on session durations according to a communication of the packets in a given duration, and performing verification tests based on the packets distributed to the machines by each of the machines. | 07-11-2013 |
20130246359 | COMPUTER PRODUCT, VERIFICATION SUPPORT METHOD, AND VERIFICATION SUPPORT APPARATUS - A computer-readable recording medium stores a program that causes a computer to execute a verification support process that includes acquiring a series of data transmitted and received between apparatuses; creating a plurality of data groups by dividing the series of acquired data; detecting among the created data groups, a data group that includes given data acting as an issuance request for identification information of a transmission source; adding the given data to the beginning of subsequent data groups that are among the created data groups and transmitted after the detected data group; and outputting the subsequent data groups to which the given data has been added. | 09-19-2013 |
20140189009 | COMPUTER-READABLE RECORDING MEDIUM AND INFORMATION PROCESSING APPARATUS - A computer is disclosed that performs a verification process. The computer analyzes quality characteristics of communication for each of predetermined quality analysis subjects from actual capture data. The computer generates send data based on the actual capture data and an exchanging message which is acquired when a reproduced operation is verified based on the actual capture data. The computer sends the send data to a verification subject apparatus at sending timing based on the quality characteristics. The computer receives response data from the verification subject apparatus. The computer verifies an operation of the verification subject apparatus. | 07-03-2014 |
20140297767 | INFORMATION PROCESSING APPARATUS AND VERIFICATION CONTROL METHOD - An information processing apparatus obtains a plurality of messages transmitted between a client and a server, each message including at least one of a plurality of parameters and a value of the parameter. The information processing apparatus detects a parameter having different values set in different messages among the obtained plurality of messages, from among the plurality of parameters. According to the detection result, the information processing apparatus determines a rewrite parameter whose value is rewritten when using the plurality of messages for verification of a server, among the plurality of parameters. | 10-02-2014 |
20140365446 | VERIFICATION SYSTEM, VERIFICATION METHOD, AND MEDIUM STORING VERIFICATION PROGRAM - A verification system include: a server that receives each of a first data group and second data group, and transmits a third data group and a fourth data group to respond to each of the first data group and second data group received; a database server that receives the third data group and transmits the second data group; and a verification device that performs operation verification of the server or database server, the verification device including a processor configured to transmit, to the database server, a partial data group in the third data group received by the database server, and transmit, to the server, the first data group corresponding to another data group in the third data group, thereby supplying the other data group to the database server and using the first data group, the partial data group, and the fourth data group, to perform the operation verification. | 12-11-2014 |
20150023371 | MISMATCH DETECTING METHOD, DETECTING DEVICE, AND RECORDING MEDIUM - A mismatch detecting method includes: specifying a configuration of test data in accordance with a condition in which a time when a first packet out of a plurality of packets included in the test data caused to make a round trip through a transmission path including a plurality of sections is transmitted in one section out of the plural sections in an inbound path and a time when a second packet out of the plural packets is transmitted in the one section in an outbound path overlap with each other; transmitting the test data to the transmission path in accordance with the configuration specified by the specifying; and determining a mismatch of a transmission system within the transmission path, based on a loss situation of the test data returning from the transmission path after the transmitting. | 01-22-2015 |