JP4579843B2 - Communication device - Google Patents

Description

  The present invention relates to a communication apparatus that transmits and receives data using a plurality of communication routes and controls communication by configuring either an active standby configuration or a dual-system active configuration.

  2. Description of the Related Art In recent years, in a communication apparatus that transmits and receives data using a plurality of communication routes, communication of a current communication configuration that performs communication between a communication route that waits without transmitting and receiving data and a communication route that transmits and receives data among the plurality of communication routes 2. Description of the Related Art A device and a communication device of a current system configuration that performs communication by transmitting and receiving data from all communication routes among a plurality of communication routes are used. And the technique which changes the structure of the communication route in a communication apparatus to a working standby structure or a both-system working structure is implemented.

  For example, in Patent Document 1, normally, the communication route is set to the active standby configuration, and when the capacity of the memory provided in the communication device exceeds a predetermined threshold, the communication route is moved to the both-system active configuration. An invention is disclosed in which, when the memory capacity falls below a predetermined threshold value after that, a transition is made from the two-system active configuration to the active standby configuration.

JP 2002-64590 A

  By the way, as described below, the above-described conventional techniques have problems in that communication operation and maintenance cannot be achieved and communication efficiency cannot be improved.

  That is, in the conventional technology, when the memory capacity in the communication device exceeds a predetermined threshold, the communication route is shifted from the active standby configuration to the two-system active configuration. Even if the amount exceeds the specified threshold but the communication device at the connection destination has a margin, the network as a whole is not congested, and there is a margin in the amount of traffic, the active configuration from the active system is used for both systems There was a problem that the operation and maintenance of communication could not be achieved.

  Further, in the conventional technology, when the capacity of the memory in the communication device falls below a predetermined threshold value, the communication route is shifted from the two-system active configuration to the active standby configuration. Even though the capacity is below the specified threshold, there is no room for the communication device at the connection destination, and the network as a whole is congested. There was a problem that the communication route was changed to the configuration, and the communication efficiency could not be improved.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and an object thereof is to improve the operation and maintenance of communication and the efficiency of communication.

In order to solve the above-described problems and achieve the object, the present invention provides a communication apparatus that transmits and receives data using a plurality of communication routes and controls communication by configuring either the active standby configuration or the dual-system active configuration And determining means for determining a communication state in the communication route, and depending on the communication state determined by the determining means, the communication route is changed to the active standby configuration or the dual-system active configuration. Communication route control means for controlling.

Also, in the present invention according to the above invention, the determination unit may determine the communication state according to any one or a combination of a line load in the communication route, a response time from a facing communication device, and a buffer capacity of the communication device. It is characterized by determining.

Further, the present invention is the above invention, wherein the communication route control means controls the communication route to transition from the active standby configuration to the two-system active configuration, or the communication route is changed to the both When the system is controlled so as to transition from the active system configuration to the active standby configuration, the system further comprises control information transmission means for transmitting synchronization control information for synchronization to the opposing communication device.

Further, in the present invention, in the above invention, when the communication route is controlled so that the communication route is changed from the active standby configuration to the dual-system active configuration, the forward route and the return route of the data are determined. A communication path identical means for making the communication paths identical is further provided.

Moreover, the present invention is characterized in that, in the above-mentioned invention, the control information transmitting means transmits the control information to the opposing communication device and also transmits the control information to a terminal device.

According to the present invention, the communication state in the communication route is determined, and the communication route is controlled to transition to the active standby configuration or the two-system active configuration according to the determined communication status. If the memory capacity of the network exceeds the specified threshold, but there is a margin in the communication device at the connection destination, the network as a whole is not congested, and there is a margin in the amount of communication, both systems can be switched from the active standby configuration. As a result of not making the transition to the active configuration, for example, the memory capacity in the communication device does not exceed a predetermined threshold, but there is no room in the communication device of the connection destination, the communication is congested as a whole network, When there is no allowance for the communication amount, the communication route is shifted from the active standby configuration to the two-system active configuration, so that communication operation maintenance and communication efficiency can be achieved.

Further, according to the present invention, the communication state is determined by any one or combination of the line load in the communication route, the response time from the opposite communication device, and the buffer capacity of the communication device. Can be grasped.

Further, according to the present invention, when the communication route is controlled to transition from the active standby configuration to the dual active configuration, or the communication route is transitioned from the dual active configuration to the active standby configuration. When controlled, synchronization control information for synchronization is transmitted to the opposing communication device, and as a result of synchronizing with the opposing communication device, efficient communication can be performed.

Further, according to the present invention, when the communication route is controlled so as to change from the active standby configuration to the dual-system active configuration, the communication path of the forward path and the return path in the data is made the same, so that a failure occurs. Therefore, failure analysis becomes easy and efficient communication can be performed.

Further, according to the present invention, the control information is transmitted to the opposite communication device and the control information is also transmitted to the terminal device, so that more efficient communication can be performed as a result of synchronization with the terminal device. Become.

  Embodiments of a communication apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

  In the following embodiments, the outline and features of the communication apparatus according to the first embodiment, the configuration of the communication apparatus, and the flow of processing will be described in order, and finally the effects of the first embodiment will be described.

[Outline and Features of Communication Device According to Embodiment 1]
First, the outline and features of the communication apparatus according to the first embodiment will be described with reference to FIG. FIG. 1 is a diagram for explaining the outline and features of the communication apparatus according to the first embodiment.

  In the communication apparatus 10 according to the first embodiment, data is transmitted / received using a plurality of communication routes (line A, line B), and a working standby configuration (that is, a communication route that waits without transmitting / receiving data among the plurality of communication routes) Communicating with either a communication route that transmits / receives data) or an active configuration for both systems (that is, a configuration that transmits and receives data from all communication routes among a plurality of communication routes) The outline is to control. The communication apparatus 10 is mainly characterized in that communication operation and maintenance and communication efficiency are improved.

  This main feature will be specifically described. As shown in FIG. 1, the communication device 10 according to the first embodiment includes information on a communication route to be controlled (control information table), a threshold value for determining a communication state ( A threshold information table) and a control target DB 14b for storing session information (session table) of data output from the line B. And this communication apparatus 10 employs a working standby configuration, and outputs data only from line A and does not output data from line B (see (1) in FIG. 1). Then, the communication device 10 measures the communication state of the line A (for example, line load, ICMP response time) at regular intervals (see (2) in FIG. 1). As a result of the measurement, when it is determined that the communication state of the line A is congested (for example, the measured ICMP response time is slower than the ICMP response time threshold stored in the threshold information table) (see FIG. 1 (see (3) in FIG. 1), the communication device 10 makes a transition from the active standby configuration to the dual-system active configuration and newly starts using the line B (see FIG. 1 (4)).

  Subsequently, the communication device 10 writes the data output from the line B in the session table, makes the communication path of the forward path and the return path the same route (see (5) in FIG. 1), and Thereafter, a synchronization packet indicating that processing is performed using the line A and the line B is transmitted (see (6) in FIG. 1). Thereafter, the communication device 10 outputs data from either the line A or the line B using the session table (see (7) in FIG. 1). Specifically, the communication device 10 outputs data stored in the session table from the line B, and outputs data not stored in the session table from the line A.

  As described above, the communication device 10 does not depend on the capacity of the memory in the communication device 10, for example, and there is a margin in the communication device 20 facing, so that the entire network is not congested. If there is a surplus in the traffic (for example, the measured ICMP response time is earlier than the ICMP response time threshold stored in the threshold information table), the result of not making a transition from the active standby configuration to the two-system active configuration In addition, for example, when there is no margin in the facing communication device 20 and communication is congested as a whole network, and there is no margin in the amount of communication (for example, the measured ICMP response time is stored in the threshold information table). As a result of the transition of the communication route from the active standby configuration to the active configuration of both systems, the communication operation maintenance and communication efficiency are improved. It is possible to achieve.

  The communication device 10 shown in FIG. 1 includes a plurality of lines (for example, a line A and a line B as shown in FIG. 2). ) And a redundant configuration having one line for each of a plurality of communication apparatuses (for example, line A for a 1-system communication apparatus and line B for a 2-system communication apparatus).

[Configuration of communication device]
Next, the configuration of the communication apparatus 10 shown in FIG. 1 will be described with reference to FIG. FIG. 4 is a block diagram illustrating the configuration of the communication apparatus 10 according to the first embodiment. As shown in the figure, the communication device 10 includes a communication device control IF 11, a client server control IF 12, a control unit 13, and a storage unit 14, and is connected to the opposing communication device 20 and client / server 30. The processing of each of these units will be described below.

  Among these, the communication device control IF 11 is means for controlling communication related to various types of information exchanged with the facing communication device 20. Specifically, the communication device control IF 11 transmits and receives data, and transmits a synchronization packet to the opposite communication device 20.

  The client server control IF 12 is means for controlling communication related to various information exchanged with the connected client / server 30. Specifically, the client server control IF 12 transmits / receives data to / from the client / server 30.

  The storage unit 14 is a storage unit that stores data and programs necessary for various processes performed by the control unit 13, and particularly includes a CONFIG information database 14a and a control target DB 14b that are closely related to the present invention.

  Among these, CONFIG information DB14a is a means to memorize | store CONFIG information, and specifically memorize | stores the information regarding the redundant structure of the communication route extracted by the control object extraction part 13a.

  The control target DB 14b is a control information table that stores information related to a communication route to be controlled, a threshold information table that stores a threshold for determining a communication state, an ICMP monitoring table that stores an ICMP monitoring target, and an output from the line B. Means for storing a session table for storing session information of data to be processed. Specifically, the control target DB 14b stores a control information table and a threshold information table ICMP monitoring table created by the control target extraction unit 13a. Further, the control target DB 14b stores the session information written by the communication path identifying unit 13d.

  The control unit 13 has a program defining various processing procedures and an internal memory for storing necessary data, and performs various processing using these, and is particularly closely related to the present invention. As a control target extraction unit 13a, a communication state determination unit 13b, a communication route control unit 13c, a communication path identification unit 13d, a synchronization packet transmission unit 13e, and a data output unit 13f. The communication state determination unit 13b corresponds to the “determination unit” recited in the claims, and the communication route control unit 13c corresponds to the “communication route control unit” recited in the claims.

  Among these, the control target extraction unit 13a is a processing unit that extracts information related to the redundant configuration of the communication route. Specifically, the control target extraction unit 13a reads the CONFIG information DB 14a, extracts information on the redundant configuration of the communication route, and stores information on the communication route to be controlled based on the extracted information. A control information table to be stored, a threshold information table to store a threshold for determining a communication state, and an ICMP monitoring table to store an ICMP monitoring target, and store them in the control target DB.

  The communication state determination unit 13b is a processing unit that determines the communication state. Specifically, the communication state determination unit 13b reads the control target DB 14b at regular intervals and measures the communication state. In other words, for example, the communication device 10 acquires a communication route to be controlled from the control information table stored in the control target DB 14b, and determines the line load, ICMP response time, and buffer capacity of the communication route to be controlled. taking measurement. Then, the communication state determination unit 13b analyzes the communication state using the measured communication state.

  Subsequently, after measuring the communication state, the communication state determination unit 13b reads the control target DB 14b to acquire the threshold information table, and stores the threshold stored in the acquired threshold information table and the measured communication state (line Load, ICMP response time, buffer capacity) is used to determine whether the communication route is congested.

  The communication route control unit 13c is a processing unit that controls a communication route. Specifically, after the communication state determination unit 13b determines that the communication route is congested, the communication route control unit 13c reads the control information DB 14b and reads “device configuration” and “line state from the control information table. To determine the device configuration and the line status. That is, for example, the communication route control unit 13c determines whether the device configuration is a single configuration or a redundant configuration, and whether the line status is active standby or dual-system active. Then, when the device configuration is a redundant configuration and the line state is the active standby configuration, the communication route control unit 13c starts using the line B in order to shift to the both-system active configuration.

  The communication path identifying unit 13d is a processing unit that unifies the forward path and the return path of the communication path. Specifically, after the use of the line B is started by the communication route control unit 13c, the communication path identifying unit 13d reads the control target DB 14b and acquires session information for making the communication path the same route from the session information table. To do. Then, it is determined whether the acquired session information is a new session or a continuous session.

  The synchronization packet transmission unit 13e is a processing unit that transmits a synchronization packet. Specifically, as illustrated in FIG. 6, the synchronization packet transmission unit 13 e reads the control information DB 14 b, determines the device configuration from the control information table, and when the device configuration is single, the opposite communication A synchronization packet is transmitted to the device 20. In addition, when the device configuration is redundant, the synchronization packet transmission unit 13e transmits a synchronization packet to the communication device 20 facing the second-system communication device.

  The data output unit 13f is a processing unit that transmits data. Specifically, the data output unit 13f reads the control target DB 14b, and acquires the session information from the session information table. Then, the data output unit 13f determines the device configuration. When the device configuration is single, the data output unit 13f determines the line on which data is output based on the acquired session information, and the data is output from the line A or the line B. The data is output to the facing communication device 20. On the other hand, if the device configuration is redundant, the output device data output unit 13f determines whether the device to be output is a 1-system communication device or a 2-system communication device based on the acquired session information. When the output device is a 1-system communication device, data is output as it is from the line A, and when the output device is a 2-system communication device, the 1-system communication device is 2 Redirect to the local communication device.

[Processing by communication device]
Next, processing performed by the communication apparatus 10 according to the first embodiment will be described with reference to FIGS. 7 to 15 are flowcharts illustrating processing operations of the communication device 10 according to the first embodiment.

  First, as illustrated in FIG. 7, the control target extraction unit 13a of the communication device 10 reads the CONFIG information DB 14a, extracts information related to the redundant configuration of the communication route (steps S101 and S102), and the extracted information Based on the above, a control information table for storing information on a communication route to be controlled, a threshold information table for storing a threshold for determining a communication state, and an ICMP monitoring table for storing an ICMP monitoring target are created. The created table is stored in the control target DB (step S103).

  Subsequently, as illustrated in FIG. 8, the communication state determination unit 13b reads the control target DB 14b at regular intervals (step S201) and measures the communication state (step S202). In other words, for example, the communication device 10 acquires a communication route to be controlled from the control information table stored in the control target DB 14b, and determines the line load, ICMP response time, and buffer capacity of the communication route to be controlled. taking measurement. Then, the communication state determination unit 13b analyzes the communication state using the measured communication state (step S203).

  Next, processing for analyzing the communication state will be described in detail with reference to FIG. After measuring the communication state, the communication state determination unit 13b reads the control target DB 14b to acquire the threshold information table (step S301), and the threshold stored in the acquired threshold information table and the measured communication state ( It is determined whether the communication route is congested using the line load, ICMP response time, and buffer capacity (step S302). If it is not determined that the data output unit 13f is congested, the data output unit 13f performs a data transmission management control process described later (step S303). On the other hand, if it is determined that the communication route control unit 13c is congested, the communication route control unit 13c performs configuration transition management control processing (step S304).

  The configuration transition management control process will be described in detail with reference to FIG. After the communication state determination unit 13b determines that the communication route is congested (step S302), the communication route control unit 13c reads the control target DB 14b (step S401), and reads “apparatus configuration” from the control information table. “Line status” is acquired, and the device configuration and line status are determined (steps S402 and S403). That is, for example, the communication route control unit 13c determines whether the device configuration is a single configuration or a redundant configuration, and whether the line status is active standby or dual-system active. If the device configuration is single or the device configuration is redundant and the line state is active for both systems, the communication path identifying unit 13d configures the outbound and inbound communication paths as the same route (step S407). On the other hand, when the device configuration is a redundant configuration and the line status is the active standby configuration, the communication route control unit 13c starts using the line B to shift to the both-system active configuration (step S404). ). Thereafter, the communication path identifying unit 13d makes the outbound path and the inbound path communication paths the same route (step S405). Then, the synchronization packet transmitter 13e transmits a synchronization packet to the communication device 20 in order to synchronize with the opposing communication device 20 (step S406).

  The process for making the communication paths identical will be described in detail with reference to FIG. After the use of the line B is started by the communication route control unit 13c, the communication path identifying unit 13d reads the control target DB 14b and acquires session information for making the communication path the same route from the session information table (step S501). . Then, it is determined whether the acquired session information is a new session or a continuation session (step S502). If the acquired session information is a continuation session, the synchronization packet transmission unit 13e synchronizes with the opposing communication device 20, A synchronization packet is transmitted to the communication device 20 (step S406). On the other hand, in the case of a new session, the synchronous packet transmission unit 13e determines whether the communication direction is output (LAN to WAN) or input (WAN to LAN).

  Then, when the communication direction is output, the communication path identifying unit 13d writes the data to the line B target in the session information table of the control target DB 14b (step S504). On the other hand, when the communication direction is input, the communication path identifying unit 13d determines whether the input data is input from the line A or the line B. When the communication path identifying unit 13d is input from the line B, the communication path identifying unit 13d writes the input data to the session table of the control target DB 14b as being the target of the line B (step S504). Further, when input from the line A, the synchronization packet transmission unit 13e transmits a synchronization packet to the communication device 20 in order to synchronize with the communication device 20 that is opposed to the synchronization packet transmission unit 13e (step S406).

  Next, the process of synchronizing with the facing communication device 20 will be described in detail with reference to FIG. First, the synchronization packet transmission unit 13e reads the control target DB 14b (step S601), determines the device configuration from the control information table (step S602), and if the device configuration is single, the synchronization packet transmission unit 13e In response to this, a synchronization packet is transmitted (step S603). If the device configuration is redundant, a synchronization packet is transmitted to the communication device 20 facing the second-system communication device (step S604). Then, after transmitting the synchronization packet (steps S603 and S604), the synchronization packet transmission unit 13e performs data transmission management control.

  The data transmission management control process will be described in detail with reference to FIG. First, the data output unit 13f reads the control target DB 14b (step S701) and acquires session information from the session information table. Then, the data output unit 13f determines the device configuration (step S702). When the device configuration is single, the data output unit 13f determines a line through which data is output based on the acquired session information (step S703). Data is output from the line A or the line B to the facing communication device 20 (steps S705 and S706). On the other hand, if the device configuration is redundant, the output device data output unit 13f determines whether the device to be output is a 1-system communication device or a 2-system communication device based on the acquired session information. If the output device is a 1-system communication device, the data is directly output from the line A (step S706). If the output device is a 2-system communication device, the 1-system communication device is output. The communication device redirects to the second system communication device (step S707).

[Effect of Example 1]
As described above, the communication state in the communication route is determined, and the communication route is controlled to transition to the active standby configuration or the dual-system active configuration in accordance with the determined communication status. If the capacity of the internal memory exceeds the predetermined threshold, but there is a margin in the facing communication device 20 and the network as a whole is not congested and there is a margin in the amount of communication, both the active standby configuration As a result of not making the transition to the active system configuration, for example, the capacity of the memory in the communication device 10 does not exceed a predetermined threshold, but the opposing communication device 20 has no room and communication is congested as a whole network. If the communication volume is not sufficient, the communication route can be changed from the active standby configuration to the dual-system active configuration, so that communication operation maintenance and communication efficiency can be achieved.

  Further, according to the first embodiment, the communication state is determined based on any one or combination of the line load on the communication route, the response time from the opposite communication device, and the buffer capacity of the communication device, so that more detailed communication is possible. It is possible to grasp the state.

  Further, according to the first embodiment, when the communication route is controlled to transition from the active standby configuration to the dual active configuration, or the communication route is changed from the dual active configuration to the active standby configuration. When controlled, the synchronization control information for synchronization is transmitted to the opposing communication device 20, and as a result of synchronizing with the opposing communication device 20, efficient communication can be performed.

  In addition, according to the first embodiment, when the communication route is controlled so as to change from the active standby configuration to the two-system active configuration, a failure occurs because the communication path of the forward path and the return path in the data is the same. In such a case, failure analysis becomes easy and efficient communication can be performed.

Although the embodiments of the present invention have been described so far, the present invention may be implemented in various different forms other than the embodiments described above. Therefore, another embodiment included in the present invention will be described below as a second embodiment.

(1) Client Server In the first embodiment, when the structure of the communication device 10 is a redundant configuration, a case where the first communication device redirects to the second communication device based on the session data is described. However, the present invention is not limited to this, and may be transmitted to the second-system communication device based on the client / server 30 session data.

  Specifically, as shown in FIG. 16, the client / server 30 stores the session information for the clasaba that stores the session information. Then, as shown in FIG. 14, after detecting that the communication route is congested, the communication device 10 reads the communication state control target DB 14b (step S801) and acquires session information from the session information table. Then, the communication device 10 transmits a synchronization packet for the client / server 30 to synchronize (step S802).

  Subsequently, the processing of the client / server 30 will be described with reference to FIG. Whether the client / server 30 starts (or continues) the switching of the configuration of the communication apparatus 10 from the active standby configuration to the dual-system active configuration after receiving the above-described synchronous packet (Yes in step S901). Alternatively, it is determined whether or not the content is to end the switching to the two-system working configuration (step S902). If it is the content to end the switching, the session information is deleted (step S906).

  In addition, when the content to be switched is started, the client / server 30 reads the class server session table (step S903), and determines whether the communication packet to be transmitted is a target to be transmitted to the second-system communication device. However, if it is not the target, the communication packet is sent to the 1-system communication device as usual. On the other hand, if the client / server 30 is a switching target, the client / server 30 changes the gateway to a 2-system communication device, newly writes that switching is in the session table (step S907), and sends the communication packet to the 2-system communication apparatus. The data is sent to the communication device (step S908).

  As described above, the control information is transmitted to the opposing communication device 20 and the control information is also transmitted to the client / server 30, so that more efficient communication can be performed as a result of synchronization with the terminal device. .

(2) System Configuration The components of the illustrated devices are functionally conceptual and need not be physically configured as illustrated. In other words, the specific form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured. For example, the control target extraction unit 13a and the communication state determination unit 13b may be integrated. Further, all or a part of each processing function performed in each device may be realized by a CPU and a program that is analyzed and executed by the CPU, or may be realized as hardware by wired logic.

  In addition, among the processes described in this embodiment, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed. All or a part can be automatically performed by a known method. In addition, the processing procedure, control procedure, specific name, and information including various data and parameters shown in the above-described document and drawings can be arbitrarily changed unless otherwise specified.

(3) Program The communication control method described in the present embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation as shown in FIG. This program can be distributed via a network such as the Internet. The program can also be executed by being recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, and a DVD and being read from the recording medium by the computer.

(Appendix 1) A communication device that transmits and receives data using a plurality of communication routes and controls communication by configuring either the active standby configuration or the dual-system active configuration,
Determining means for determining a communication state in the communication route;
Communication route control means for controlling the communication route to transition to the active standby configuration or the two-system active configuration according to the communication state determined by the determining means;
A communication apparatus comprising:

(Additional remark 2) The said determination means determines the said communication state by any one or combination of the line load in the said communication route, the response time from the opposing communication apparatus, and the buffer capacity of a communication apparatus, It is characterized by the above-mentioned. The communication apparatus according to supplementary note 1, wherein:

(Supplementary Note 3) When the communication route is controlled by the communication route control means to transition from the active standby configuration to the dual active configuration, or the communication route from the dual active configuration to the active standby The communication according to appendix 1 or 2, further comprising control information transmission means for transmitting synchronization control information for synchronization to an opposing communication device when controlled to transition to a configuration apparatus.

(Supplementary Note 4) When the communication route is controlled by the communication route control means so that the communication route is changed from the active standby configuration to the dual-system active configuration, communication in which the forward and backward communication paths in the data are the same The communication apparatus according to any one of appendices 1 to 3, further comprising path identical means.

(Supplementary note 5) In any one of Supplementary notes 1 to 4, wherein the control information transmitting unit transmits the control information to the opposing communication device and also transmits the control information to a terminal device. The communication device described.

(Appendix 6) A communication control method for transmitting and receiving data using a plurality of communication routes and controlling communication by configuring either the active standby configuration or the dual-system active configuration,
A determination step of determining a communication state in the communication route;
A communication route control step for controlling the communication route to transition to the active standby configuration or the two-system active configuration according to the communication state determined by the determining step;
The communication control method characterized by including.

(Appendix 7) A communication control program for causing a computer to execute a communication control method for transmitting and receiving data using a plurality of communication routes and controlling communication by configuring either the active standby configuration or the dual-system active configuration,
A determination procedure for determining a communication state in the communication route;
A communication route control procedure for controlling the communication route to transition to the active standby configuration or the two-system active configuration according to the communication state determined by the determination procedure;
A communication control program for causing a computer to execute.

  As described above, the communication device according to the present invention transmits and receives data using a plurality of communication routes, and is useful for controlling communication by configuring either the active standby configuration or the dual-system active configuration, Suitable for communication operation maintenance and communication efficiency.

1 is a diagram for explaining an overview and characteristics of a communication device according to Embodiment 1. FIG. 1 is a diagram for explaining a configuration example of a communication apparatus according to Embodiment 1. FIG. 1 is a diagram for explaining a configuration example of a communication apparatus according to Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of a communication device according to a first embodiment. It is a figure for demonstrating the table which control object DB memorize | stores. It is a figure for demonstrating a synchronous packet format. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. 3 is a flowchart illustrating a processing operation of the communication apparatus according to the first embodiment. It is a figure for demonstrating the session table for clients / servers. It is a figure which shows the program which performs a communication apparatus.

Explanation of symbols

10 Communication Device 11 Communication Device Control IF
12 Client / server control IF
DESCRIPTION OF SYMBOLS 13 Control part 13a Control object extraction part 13b Communication state determination part 13c Communication route control part 13d Communication path identification part 13e Synchronization packet transmission part 13f Data output part 14 Storage part 14a CONFIG information DB
14b Control object DB

Claims (4)

Data is transmitted / received using multiple communication routes, and communication is performed using a communication route that waits without transmitting / receiving data and a communication route that transmits / receives data , or communication is performed by transmitting / receiving data from all communication routes. a configuration to a communication device for controlling communication one of both systems working configuration for performing,
A determination means for determining a communication state by any one or a combination of a line load in the communication route and a response time from a facing communication device ;
Communication route control means for controlling the communication route to transition to the active standby configuration or the two-system active configuration according to the communication state determined by the determining means;
A communication apparatus comprising: When the communication route control means controls the communication route to transition from the active standby configuration to the dual active configuration, or the communication route transitions from the dual active configuration to the active standby configuration If it is controlled to the communication apparatus according to claim 1, further comprising a control information transmitting means for transmitting to the communication apparatus of the counterpart synchronization control information for synchronization. When the communication route control means controls the communication route to be changed from the active standby configuration to the two-system active configuration, communication path identical means for making the forward and backward communication paths in the data identical The communication device according to claim 2 , further comprising: Said control information transmission means transmits the synchronization control information to the communication device to the opposite, to the terminal device for transmitting and receiving data via the communication device to the opposite with its own device, the active standby configuration or the two The communication apparatus according to claim 3 , wherein the synchronization control information including information related to transition to the active system configuration is transmitted.

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