JP6203062B2 - Communication network monitoring apparatus, communication network monitoring method, and computer program - Google Patents

Description

  The present invention relates to a communication network monitoring apparatus, a communication network monitoring method, and a computer program.

  In recent years, it has become possible to execute various applications on terminals such as smartphones, so the communication service quality (throughput, packet error rate, delay time, etc.) of the communication network provided by the carrier is operated on the terminal. It is becoming important to secure in application units. In addition, when a communication service quality deteriorates in its communication network, the communication carrier needs to identify the occurrence location and take measures as necessary.

  For example, techniques described in Non-Patent Documents 1 and 2 are known as conventional techniques for monitoring communication service quality at the application level. In the prior art described in Non-Patent Documents 1 and 2, a packet flowing on a communication network is captured, and data included in the captured packet is analyzed.

  FIG. 7 is a diagram showing a configuration example of a communication network for explaining a conventional communication network monitoring technique. In FIG. 7, the communication network of the carrier is composed of various communication devices (firewall F, router R, switches SW1, SW2, base stations BS1, BS2, BS3, terminals MS1, MS2, MS3, etc.). . Each terminal MS1, MS2, MS3 can access a server Sa or the like connected to the Internet 40 via the communication network. The packet capture device 20 is provided at all locations of connections (links) between the communication devices in the communication network. Then, by analyzing the data included in the packet captured by each packet capture device 20, it is determined which link has deteriorated the communication service quality.

JP 2009-065277 A

NetScout, “nGeniusONE Platform”, Internet <URL: http://www.netscout.com/products/enterprise/nGeniusONE/Pages/default.aspx> Colasoft, “Capsa”, Internet <URL: http://www.colasoft.com/capsa/>

  However, in the above-described conventional communication network monitoring technology, since the packet capture device is provided in all the places where it is desired to monitor the deterioration of the communication service quality, the cost for installation and maintenance becomes a problem. In addition, in order to aggregate and analyze the enormous amount of data acquired by the packet capture device at each point in the communication network, a broadband network and a high-performance analyzer for transmitting each data to the analyzer are required. .

  The present invention has been made in consideration of such circumstances, and when monitoring the communication service quality of a communication network, the communication network monitoring apparatus and the communication network monitoring can reduce costs by reducing the number of packet capture devices. It is an object to provide a method and a computer program.

(1) The communication network monitoring device according to the present invention is network configuration information indicating a connection relationship between communication devices of the entire communication network, based on configuration information indicating a connection between communication devices constituting a communication network to be monitored. A configuration information grasping unit for creating a traffic information grasping unit for creating analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network; A connection between the mobile terminal and a communication device constituting the monitored communication network based on terminal position information indicating a connection position of a mobile terminal connected to the mobile communication network included in the monitored communication network and terminal position information detector to create a network terminal location information indicating the relationship, Serial network configuration information based on said network terminal location information and the analysis traffic information, statistical communications service quality value for each type of connections per and communication service information between said communication apparatus, based on the statistical results, the And a data analysis unit that determines deterioration of communication service quality for each connection between communication devices.

( 2 ) The communication network monitoring apparatus according to the present invention is characterized in that, in the communication network monitoring apparatus of (1 ), the type of the communication service information is a type of an application that generates the traffic.

( 3 ) The communication network monitoring apparatus according to the present invention is the communication network monitoring apparatus according to (1) or (2) , wherein the type of the communication service information is classified by an address of a server apparatus that transmits or receives the traffic. It is characterized by being.

(4) In order to solve the above-described problem, a communication network monitoring apparatus according to an aspect of the present invention is based on configuration information indicating connection between communication apparatuses configuring a communication network to be monitored. A configuration information grasping unit that creates network configuration information indicating a connection relationship between the communication devices, and analysis information of traffic flowing through the traffic aggregation point based on the traffic information measured at the traffic aggregation point in the communication network. Based on the network configuration information and the analysis traffic information, and statistics of communication service quality values for each connection between the communication devices and for each type of communication service information, Based on the statistical results, the communication service quality is degraded for each connection between the communication devices. Comprising a data analyzer for constant, wherein the type of communication service information, wherein the a-address of the server device for transmitting or receiving traffic.
(5) A communication network monitoring apparatus according to the present invention is the communication network monitoring apparatus according to any one of (1) to (4), wherein the type of the communication service information is a communication protocol used for the traffic. It is a type.

(6) A communication network monitoring method according to the present invention is a communication network monitoring method of a communication network monitoring apparatus including a configuration information grasping unit, a traffic information grasping unit, a terminal location information grasping unit, and a data analyzing unit, A configuration information grasping step in which an information grasping unit creates network configuration information indicating a connection relationship between communication devices of the entire communication network based on configuration information indicating a connection between communication devices constituting a monitoring target communication network; The traffic information grasping section creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on the traffic information measured at the traffic aggregation point in the communication network; and The terminal location information grasping unit is connected to the monitored communication network. Network terminal position information indicating a connection relationship between the mobile terminal and a communication device constituting the monitored communication network based on terminal position information indicating a connection position of the mobile terminal connected to the mobile communication network. The terminal location information grasping step to be created, and the data analysis unit, for each connection between the communication devices and for each type of communication service information, based on the network configuration information , the network terminal location information, and the analysis traffic information A data analysis step of statistically measuring a communication service quality value and determining deterioration of the communication service quality for each connection between the communication devices based on the statistical result.
(7) A communication network monitoring method according to the present invention is a communication network monitoring method of a communication network monitoring apparatus including a configuration information grasping unit, a traffic information grasping unit, and a data analysis unit, and the configuration information grasping unit monitors A configuration information grasping step for creating network configuration information indicating a connection relationship between communication devices of the entire communication network based on configuration information indicating a connection between communication devices constituting the target communication network, and the traffic information grasping unit A traffic information grasping step for creating analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network, and the data analysis unit, Based on the network configuration information and the analysis traffic information The communication service quality value is statistically determined for each connection between the communication apparatuses and for each type of communication service information, and the deterioration of the communication service quality is determined for each connection between the communication apparatuses based on the statistical result. And a data analysis step, wherein the type of the communication service information is for each address of a server device that transmits or receives the traffic.

( 8 ) A computer program according to the present invention provides a computer with a network configuration indicating a connection relationship between communication devices of the entire communication network, based on configuration information indicating a connection between communication devices constituting a monitored communication network. Configuration information grasping step for creating information, and traffic information grasping step for creating analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network And, based on terminal position information indicating a connection position of a mobile terminal connected to the mobile communication network included in the monitored communication network, between the communication device constituting the monitored communication network and the mobile terminal Create network terminal location information indicating connection A terminal position information acquisition step of, the network configuration information based on said network terminal location information and the analysis traffic information, statistical communications service quality value for each type of and communication service information for each connection between the communication device And a data analysis step for determining a deterioration in communication service quality for each connection between the communication devices based on the statistical result.
(9) A computer program according to the present invention provides a computer with a network configuration indicating a connection relationship between communication devices of the entire communication network based on configuration information indicating a connection between communication devices constituting a monitored communication network. Configuration information grasping step for creating information, and traffic information grasping step for creating analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network And, based on the network configuration information and the analysis traffic information, statistics a communication service quality value for each connection between the communication devices and for each type of communication service information, and based on the statistical result, between the communication devices Determining degradation of communication service quality for each connection And over data analysis step, is executed, the type of communication service information, the a-address of the server device that performs transmission or reception of traffic, characterized in that it is a computer program.

  According to the present invention, when monitoring the communication service quality of a communication network, it is possible to reduce costs by reducing the number of packet capture devices.

It is a block diagram which shows the structure of the communication network monitoring apparatus 1 which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the communication network 100 of the monitoring object which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the network configuration information which concerns on one Embodiment of this invention, and network terminal location information. It is a figure which shows the structural example of the analysis traffic information which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the correlation data of the terminal and link which concern on one Embodiment of this invention. It is a figure which shows the structural example of the statistical result of the communication service quality value which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the communication network for demonstrating the conventional communication network monitoring technique.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a communication network monitoring apparatus 1 according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration example of the monitoring target communication network 100 according to the present embodiment. The monitoring target communication network 100 shown in FIG. 2 (hereinafter referred to as the monitoring target network 100) will be described below as a specific example. Note that the configuration example of FIG. 2 is simplified from the actual configuration for convenience of explanation, but can be similarly applied to the actual configuration.

  In FIG. 2, a monitoring target network 100 is a communication network provided by a communication carrier and includes a mobile communication network. The monitoring target network 100 includes various communication devices (firewall F, router R, switch SW1, base stations BS1, BS2, BS3, terminals MS1, MS2, MS3, MS4, MS5, etc.). Each terminal MS1, MS2, MS3, MS4, MS5 can access servers Sa, Sb, Sc, Sd, etc. connected to the Internet 40 via the monitored network 100. The packet capture device 20 is provided at a traffic aggregation point 30 in the monitoring target network 100. The packet capture device 20 captures a packet flowing through the traffic aggregation point 30 and transmits data included in the captured packet to the communication network monitoring device 1. In the example of FIG. 2, the traffic aggregation point 30 is on a link where traffic exchanged between the monitored network 100 and the Internet 40 is aggregated.

  In FIG. 1, the communication network monitoring device 1 includes a configuration information grasping unit 2, a terminal location information grasping unit 3, a traffic information grasping unit 4, and a data analyzing unit 5.

  The configuration information grasping unit 2 receives configuration information from a configuration information management database (configuration information management DB) 11. The configuration information indicates a connection between communication devices that configure the monitoring target network 100. In the example of FIG. 2, the communication device that is the target of the configuration information includes the firewall F, the router R, the switch SW1, and the base stations BS1, BS2, and BS3. Although not shown in FIG. 2, a stationary terminal such as a stationary personal computer is also a target of configuration information. In this embodiment, mobile terminals (terminals MS1, MS2, MS3, MS4, and MS5) connected to the mobile communication network in the monitoring target network 100 are not targeted for configuration information.

  The configuration information grasping unit 2 creates network configuration information indicating a connection relationship between communication devices of the entire monitoring target network 100 based on the configuration information. The network configuration information is output to the data analysis unit 5.

  Terminal position information is input to the terminal position information grasping unit 3 from a terminal position information management database (terminal position information management DB) 12. The terminal position information indicates a connection position of a mobile terminal connected to the mobile communication network in the monitoring target network 100.

  The terminal location information grasping unit 3 is a network terminal that indicates a connection relationship between a communication device configuring the monitoring target network 100 and a mobile terminal connected to the mobile communication network in the monitoring target network 100 based on the terminal location information. Create location information. The network terminal position information is output to the data analysis unit 5.

  Data included in packets captured at the traffic aggregation point 30 is input to the traffic information grasping unit 4 from the packet capture device 20 provided at the traffic aggregation point 30. Data input from the packet capture device 20 is traffic information measured at the traffic aggregation point 30. The traffic information grasping unit 4 receives traffic information such as a communication log in the router R and the switch SW1 and communication management data by SNMP (simple network management protocol) from the communication management device 21 in the monitored network 100. The

  Based on the input traffic information, the traffic information grasping unit 4 creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point 30.

  The data analysis unit 5 receives network configuration information from the configuration information grasping unit 2, network terminal position information from the terminal location information grasping unit 3, and analysis traffic information from the traffic information grasping unit 4. Based on the network configuration information, the network terminal location information, and the analysis traffic information, the data analysis unit 5 statistically calculates the communication service quality value for each link between communication devices constituting the monitored network 100 and for each type of communication service information. Based on the statistical result, deterioration of communication service quality is determined for each link between the communication devices. The data analysis unit 5 outputs service quality deterioration information based on the determination result. The service quality deterioration information indicates a deterioration state of communication service quality in each link in the monitoring target network 100. The operator of the monitoring target network 100 can know which link has deteriorated the communication service quality based on the service quality deterioration information.

  Hereinafter, the operation of the communication network monitoring apparatus 1 according to the present embodiment will be described with a specific example.

  FIG. 3 is a diagram showing a configuration example of network configuration information and network terminal location information according to the present embodiment. The example of FIG. 3 corresponds to the monitoring target network 100 shown in FIG. FIG. 3 shows links between the communication devices that constitute the monitoring target network 100. In FIG. 3, the information of the links A, B, C, D, E from the firewall F to the base stations BS1, BS2, BS3 is network configuration information. Information of the links F, G, H, I, and J from the base stations BS1, BS2, and BS3 to the terminals MS1, MS2, MS3, MS4, and MS5 is network terminal position information.

  The configuration information grasping unit 2 creates the network configuration information shown in FIG. 3 based on the configuration information received from the configuration information management DB 11. The terminal location information grasping unit 3 creates the network terminal location information shown in FIG. 3 based on the terminal location information received from the terminal location information management DB 12. From these network configuration information and network terminal location information, the links between the communication devices constituting the monitoring target network 100 can be grasped.

  FIG. 4 is a diagram illustrating a configuration example of analysis traffic information according to the present embodiment. The example of FIG. 4 corresponds to the monitoring target network 100 shown in FIG. FIG. 4 shows analysis information of traffic flowing through the traffic aggregation point 30. In FIG. 4, each item (No. A to K) includes servers Sa, Sb, Sc, Sd and terminals MS1, MS2, MS3, MS4, and MS5 specified by IP (Internet Protocol) addresses and port numbers, respectively. The type of communication protocol used for traffic, the type of application that generates traffic, and communication service quality values (throughput, packet error rate, delay time) are shown.

  The traffic information grasping unit 4 creates the analysis traffic information shown in FIG. 4 based on the traffic information input from the packet capture device 20 provided at the traffic aggregation point 30. At this time, if there is information that can be used for analysis of traffic flowing through the traffic aggregation point 30 in the traffic information input from the communication management device 21, the traffic information grasping unit 4 displays the usable information. Used to create analysis traffic information. For example, according to the communication management data by SNMP, traffic analysis at the IP communication level is possible. Further, according to the data included in the packet captured by the packet capture device 20, traffic analysis at the application level is possible.

  FIG. 5 is a diagram illustrating a configuration example of association data of terminals and links according to the present embodiment. Based on the network configuration information and network terminal location information shown in FIG. 3, the data analysis unit 5 creates association data of terminals and links shown in FIG. FIG. 5 shows associations between the links A to J and the terminals MS1, MS2, MS3, MS4, and MS5.

  Specifically, the traffic flowing on the link A is any one of the terminals MS1, MS2, MS3, MS4, and MS5. The traffic flowing on the link B is any one of the terminals MS1, MS2, and MS3. The traffic flowing on the link C is the traffic of either the terminal MS4 or MS5. The traffic flowing on the link D is the traffic of the terminal MS1. The traffic flowing on the link E is one of the terminals MS2 and MS3. The traffic flowing on the link F is the traffic of the terminal MS1. The traffic flowing on the link G is the traffic of the terminal MS2. The traffic flowing on the link H is the traffic of the terminal MS3. The traffic flowing on the link I is the traffic of the terminal MS4. The traffic flowing in the link J is the traffic of the terminal MS5.

  FIG. 6 is a diagram illustrating a configuration example of a statistical result of the communication service quality value according to the present embodiment. The data analysis unit 5 statistics the communication service quality value for each link and for each type of communication service information based on the analysis traffic information shown in FIG. 4 and the terminal-link association data shown in FIG. . Here, the reason for statistically calculating the communication service quality value for each type of communication service information is that it can be considered that the communication service quality values are equivalent in the same communication service indicated by the communication service information. Thereby, the deterioration determination of the communication service quality value based on the time change of the statistical value of the communication service quality value is performed.

  In the statistical result of FIG. 6, links A, B, C, and E are used as the aggregation target links. Also, as the type of communication service information, the type of application that generates traffic, the type of communication protocol used for traffic, and the address of the server that performs transmission or reception of traffic are used. Throughput and delay time are used as communication service quality values. The average is used as a statistical method of communication service quality values.

  The data analysis unit 5 periodically calculates the statistical result of the communication service quality value shown in FIG. And the data analysis part 5 determines deterioration of communication service quality for every link based on the time change of the statistical result of the communication service quality value. An example of this communication service quality degradation determination method is shown below.

(Example 1 of Communication Service Quality Degradation Determination Method) When the average value of communication service quality values with a certain link is equal to or higher than a predetermined value or lower than a predetermined value, it is determined that the communication service quality of the link is deteriorated. For example, when the average throughput value of the link A becomes a predetermined value or less, it is determined that the communication service quality of the link A is deteriorated. Further, for example, when the average delay time value of the link B becomes a predetermined value or more, it is determined that the communication service quality of the link B is deteriorated.

(Example 2 of Communication Service Quality Degradation Determination Method) When the fluctuation range of the average value of the communication service quality value of a certain link is equal to or greater than a predetermined value, the variance of the communication service quality value of the link is calculated. Then, when the fluctuation range is equal to or greater than a predetermined multiple of the variance, it is determined that the communication service quality of the link is deteriorated.

(Example 3 of Communication Service Quality Degradation Determination Method) The network abnormality detection technique described in Patent Document 1 is used. In this network abnormality detection technology, a distribution of statistical values of communication service quality values (for example, throughput) for each terminal is created, and network abnormalities (with communication service quality deterioration) are determined based on fluctuations in the statistical value range.

  The data analysis unit 5 outputs service quality deterioration information indicating the deterioration state of the communication service quality in each link based on the determination result of the communication service quality deterioration for each link.

  According to the present embodiment, when monitoring the communication service quality of the monitored network 100, the packet capture device 20 may be provided at least at the traffic aggregation point 30 in the monitored network 100. Therefore, the cost can be reduced.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  For example, in the above-described embodiment, the monitoring target network includes a mobile communication network. However, when the monitoring target network does not include a mobile communication network, the terminal location information grasping unit 3 is not necessary.

  In the above-described embodiment, the average value is used as the statistical value of the communication service quality value. However, other statistical values (for example, standard deviation) may be used.

  Further, a computer program for realizing the functions of the communication network monitoring device 1 described above is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. Also good. Here, the “computer system” may include an OS and hardware such as peripheral devices.

  “Computer-readable recording medium” refers to a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a DVD (Digital Versatile Disk), and a built-in computer system. A storage device such as a hard disk.

Further, the “computer-readable recording medium” means a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Communication network monitoring apparatus, 2 ... Configuration information grasping part, 3 ... Terminal position information grasping part, 4 ... Traffic information grasping part, 5 ... Data analysis part, 11 ... Configuration information management DB, 12 ... Terminal position information management DB, 20 ... packet capture device, 21 ... communication management device

Claims (9)

A configuration information grasping unit that creates network configuration information indicating a connection relationship between communication devices of the entire communication network, based on configuration information indicating a connection between communication devices constituting a monitoring target communication network;
A traffic information grasping unit that creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network;
Based on terminal location information indicating a connection location of a mobile terminal connected to a mobile communication network included in the monitored communication network, a connection relationship between the communication device and the mobile terminal constituting the monitored communication network A terminal location information grasping unit that creates network terminal location information indicating
Based on the network configuration information , the network terminal location information, and the analysis traffic information, a communication service quality value is statistically determined for each connection between the communication devices and for each type of communication service information. A data analysis unit that determines deterioration of communication service quality for each connection between communication devices;
A communication network monitoring device comprising: The type of communication service information, communication network monitoring apparatus according to claim 1, which is a type of the application generating the traffic. The communication network monitoring apparatus according to claim 1 or 2 , wherein the type of the communication service information is for each address of a server apparatus that transmits or receives the traffic. A configuration information grasping unit that creates network configuration information indicating a connection relationship between communication devices of the entire communication network, based on configuration information indicating a connection between communication devices constituting a monitoring target communication network;
A traffic information grasping unit that creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network;
Based on the network configuration information and the analysis traffic information, a communication service quality value is statistically determined for each connection between the communication devices and for each type of communication service information, and based on the statistical result, for each connection between the communication devices. In addition, a data analysis unit for determining deterioration of communication service quality,
Equipped with a,
The type of the communication service information is classified according to the address of a server device that transmits or receives the traffic .   The communication network monitoring apparatus according to claim 1, wherein the type of the communication service information is a type of a communication protocol used for the traffic. A communication network monitoring method of a communication network monitoring device comprising a configuration information grasping unit, a traffic information grasping unit, a terminal location information grasping unit, and a data analyzing unit,
The configuration information grasping unit creates the network configuration information indicating the connection relation between the communication devices of the entire communication network based on the configuration information indicating the connection between the communication devices constituting the monitored communication network. Steps,
The traffic information grasping unit creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network; and
The terminal location information grasping unit, based on terminal location information indicating a connection location of a mobile terminal connected to a mobile communication network included in the monitored communication network, a communication device configuring the monitored communication network and the communication device A terminal location information grasping step for creating network terminal location information indicating a connection relationship with a mobile terminal;
The data analysis unit statistics a communication service quality value for each connection between the communication devices and for each type of communication service information based on the network configuration information , the network terminal location information, and the analysis traffic information, A data analysis step for determining deterioration of communication service quality for each connection between the communication devices based on statistical results;
A communication network monitoring method comprising: A communication network monitoring method of a communication network monitoring device comprising a configuration information grasping unit, a traffic information grasping unit, and a data analyzing unit,
The configuration information grasping unit creates the network configuration information indicating the connection relation between the communication devices of the entire communication network based on the configuration information indicating the connection between the communication devices constituting the monitored communication network. Steps,
The traffic information grasping unit creates analysis traffic information indicating analysis information of traffic flowing through the traffic aggregation point based on traffic information measured at the traffic aggregation point in the communication network; and
Based on the network configuration information and the analysis traffic information, the data analysis unit statistics a communication service quality value for each connection between the communication devices and for each type of communication service information, and based on the statistical result, A data analysis step for determining deterioration of communication service quality for each connection between the communication devices;
Only including,
The type of the communication service information is classified according to the address of a server device that transmits or receives the traffic . On the computer,
A configuration information grasping step for creating network configuration information indicating a connection relationship between communication devices of the entire communication network based on configuration information indicating a connection between communication devices constituting a monitoring target communication network;
Based on the traffic information measured at the traffic aggregation point in the communication network, a traffic information grasping step for creating analysis traffic information indicating the analysis information of the traffic flowing through the traffic aggregation point;
Based on terminal location information indicating a connection location of a mobile terminal connected to a mobile communication network included in the monitored communication network, a connection relationship between the communication device and the mobile terminal constituting the monitored communication network A terminal location information grasping step for creating network terminal location information indicating
Based on the network configuration information , the network terminal location information and the analysis traffic information, statistic the communication service quality value for each connection between the communication devices and for each type of communication service information, based on the statistical result, A data analysis step for determining deterioration of communication service quality for each connection between the communication devices;
To the execution, the computer program. On the computer,
A configuration information grasping step for creating network configuration information indicating a connection relationship between communication devices of the entire communication network based on configuration information indicating a connection between communication devices constituting a monitoring target communication network;
Based on the traffic information measured at the traffic aggregation point in the communication network, a traffic information grasping step for creating analysis traffic information indicating the analysis information of the traffic flowing through the traffic aggregation point;
Based on the network configuration information and the analysis traffic information, a communication service quality value is statistics for each connection between the communication devices and for each type of communication service information, and the connection between the communication devices is based on the statistical result. A data analysis step for determining degradation of communication service quality for each,
Was executed,
Type of the communication service information is simply an address by der of the server device that performs transmission or reception of the traffic, the computer program.

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