KR100932624B1 - Data relay service method in case of relay server failure in communication network management system - Google Patents

Abstract

The present invention relates to a technology for enabling processes connected to a failed relay server in a communication network management system to automatically configure a bypass connection path to use a real-time data relay service through a relay server in which the process operates normally. will be.

A specific method for this is to connect to a relay server of another center corresponding to a bypass connection path when a failure of a relay server of a corresponding center is detected in an initial process of an application process in a communication network management system operating a relay server constructed for each of a plurality of centers. According to the connection request of the application process of the affiliated center, the relay server of the other center determines whether the number of currently connected applications process exceeds the maximum number of access allowed process, if not exceeded, the application of the affiliated center A second process of allowing access to the process; When a data relay command is received from an application process of the affiliated center allowed to access, the relay server of the other center checks the destination center of the data and transfers the data to the relay server of the destination center and the destination application process. Characterized by consisting of three processes.

Description

Method for relaying data in network management system under relay server fault environment}

1 is a block diagram of a conventional communication network management system.

2 is a detailed configuration diagram of a server host device of a conventional communication network management system.

3 is a configuration diagram of a communication network management system to which a data relay service method is applied in case of a relay server failure according to an embodiment of the present invention.

Figure 4 is a communication network configuration when a failure occurs in the relay server in the communication network management system according to an embodiment of the present invention.

5 to 7 are flowcharts for explaining a data relay service method when a relay server fails in a communication network management system according to an embodiment of the present invention.

The present invention relates to a data relay service method when a relay server fails in a communication network management system. More specifically, processes connected to a relay server that fails when a relay server fails in a communication network management system automatically configure a bypass connection path so that the process is performed. The present invention relates to a technology for enabling a real-time data relay service through a relay server in normal operation.

As shown in FIG. 1, in the communication network management system, a plurality of server host devices 100, 200, 300, 400, 500, and 600 are connected to each other through a dedicated network, thereby providing server host devices 100, 200, 300, and 400. , 500 and 600 interwork with each other to manage the state of the entire communication network.

The operation of each server host device will be described in more detail with reference to the detailed configuration of the server host device shown in FIG. 2.

As shown in FIG. 2, the server host apparatus 100 includes a failure reception GUI 111 provided in the reception seat PC performing a failure reception service, and a failure test GUI 112 provided in the test seat PC performing a failure test service. ), The troubleshooting GUI 113 provided in the hydraulic seat PC performing the troubleshooting service is connected. The server host apparatus 100 includes a plurality of reception server processes 130,..., A plurality of test server processes 140,..., A plurality of repair server processes 150, ..., and the processes. Is connected to the relay server 120 for relaying data between the processes is configured. In addition, the server host device 100 includes an environment file 160 in which IP information and PORT information of the relay server 120 are stored for connection with the relay server 120 when the processes are initially driven.

The detailed configuration of the server host device 100 will be described in more detail. The reception server process 130 transfers the failure report received from the failure reception GUI 111 to the test server process 140 through the relay server 120. Perform the function of passing.                         

The test server process 140 outputs the failure report received from the reception process 130 transmitted through the relay server 120 to the failure test GUI 112, and is currently performing a failure test through the relay server 120. This function outputs the information of the dedicated line to another test seat PC. And, the test server process 140, when a failure repair for a specific dedicated line is requested from the failure test GUI 112, a failure repair to the failure repair GUI to manage the dedicated line requested for troubleshooting through the relay server 120 In operation 30, the request data is delivered. 31 is a signal path when the troubleshooting request data is transmitted to a repair server process located in a server host device of another center, and 32 is a signal path when it is transmitted to a repair server process in a center.

The repair server process 150 performs a function of performing a repair on the corresponding dedicated line and transmitting the repair result data to the test server process which has delivered the repair request data when the repair request data is transmitted through the relay server 120. do. 40 is a signal path when a repair result message is transmitted from the repair server process of another center to the test server process 140, and 41 is a test server process 140 from the repair server process 150 in the center. Is a signal path when the repair result data is transmitted, and 33 is a signal path when the troubleshooting request data is transmitted from the test server process of another center to the repair server process 150.

As described above, the relay server 120 serves to relay various data for troubleshooting in real time. When a failure occurs in the relay server 120, the processes configured in the same center as the corresponding relay server 120 are There is a problem in that it is not possible to perform normal network operation maintenance work in real time until the failed relay server is recovered due to failure to access the data relay network.

In order to improve this, a system in which a server host device is duplicated has been proposed, but the redundancy system causes a gap in network operation maintenance work until the server administrator manually starts an alternate server device and establishes a relay server connection environment. There is a problem. In addition, redundancy of server host devices in all regions creates an economic burden of increasing system construction costs.

Therefore, in order to smoothly perform the maintenance operation of the communication network, even if a failure occurs in a specific relay server, a process connected to the failed relay server should be able to access the data relay network.

Accordingly, the present invention has been made to solve the above-described problems, and when a failure occurs in a specific relay server, the process connected to the relay server automatically sets an optimal bypass connection path in real time through the relay server of another center. The purpose is to make data relay service available.

In order to achieve the above object, in the communication network management system according to a preferred embodiment of the relay server failure data relay service method,

A first step of connecting to a relay server of another center corresponding to a bypass connection path when a failure of a relay server of a corresponding center is detected in an initial operation of an application process in a communication network management system operating a relay server constructed for each of a plurality of centers;

According to the connection request of the application process of the affiliated center, the relay server of the other center determines whether the number of currently connected application processes exceeds the maximum number of allowed access processes, and if not, allows the application process of the affiliated center to access. A second process of doing;

When a data relay command is received from an application process of the affiliated center permitted to access, the relay server of the other center checks the destination center of the data and transfers the data to the relay server of the destination center and the destination application process. This includes three steps.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail.

3 is a configuration diagram of a communication network system to which a method for configuring an automatic bypass connection path in case of a relay server failure according to an embodiment of the present invention is applied.

As shown in FIG. 3, the present invention provides a database in which a plurality of server host devices 1100, 1200, 1300, 1400, 1500, and 1600 are linked to each other through a structured query language (SQL) to retrieve information according to a bypass connection path. 1000 is provided.

The database 1000 includes a bypass route information table for storing information about the bypass route for the relay server, and a relay server information table for storing status information for all relay servers. Preferably, in the bypass route information table, a belonging ID field storing an ID for identifying a failed relay server, a bypass relay server ID field storing an ID of a bypass relay server providing a bypass connection path, and a bypass relay server. It consists of a bypass relay server information field for storing IP information and PORT information, and the relay server information table includes a belonging ID field for storing an ID for identifying a relay server and the number of processes stored in the number of processes connected to the relay server. Field and a priority field in which information on priority applied when providing a bypass access path is stored.

In the communication network system to which the automatic bypass connection path configuration method is applied in the case of a relay server failure according to an embodiment of the present invention, the relay servers 1140, 1240, 1340, and 1440 configured at each center are operators. Maintain interconnects in a full-mesh to allow access to processes run by and to relay data to other regional centers.

4 is a failure occurs in the relay server 1440 in any one area in the communication network system to which the present invention is applied, and processes 1411, 1421, and 1431 of the corresponding area connect to the bypass relay server 1340 for normal operation maintenance work. It is an exemplary system configuration to enable the.

Although the database 1000 is not illustrated in FIG. 4, as shown in FIG. 3, the database 1000 is connected to the server host devices 1100, 1200, 1300, and 1400 of each center through an SQL network. Processes configured in the server host devices 1100, 1200, 1300, and 1400 may access the database 1000 through SQL to handle the database 1000.

Each server host device 1100, 1200, 1300, or 1400 includes a DB connection environment file that processes can load, a listen port environment file of a relay server, a listen port environment file to allow access, and a connection between relay servers. Environment file is provided. DB alias name and SID (System Identifier) are stored in DB connection environment file, server ID, IP, PORT, center ID, etc. are stored in listen port environment file of relay server, and listen port environment file to be allowed to access. Process name, PORT, protocol, etc. are saved, and host name, IP, PORT, center ID, etc. are stored in the environment file for connection between relay servers.

Hereinafter, a data relay service method in case of a relay server failure in a communication network management system according to an embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS. 5 to 7.

FIG. 5 is a flowchart for explaining a relay server connection procedure performed in each application process when the application processes (reception server process, test server processor, repair server process) provided in each center are initially started.

The process that is initially started reads the DB connection environment information (DB alias name, SID, etc.) from the DB connection environment file of the server host device (S302), and relay server environment information (IP information, PORT) from the listen port environment file of the relay server. Information, etc.) are read (S302, S304), and a connection is attempted to the database 1000 (S306).

As a result of the connection attempt, if the connection to the database 1000 fails (No in S308), the connection to the database 1000 is terminated (S307), and if the connection of the database 1000 succeeds (Yes in S308). In connection with (1000) to check whether the current state of the connection to the relay server of the affiliated center (S310), and if the check result is confirmed that the application process is connected to the relay server (Yes in S310) and waits for a socket command If a predetermined command is input from the operator, the command is processed (S311). However, if the check result of step S301 is not confirmed that the process is connected to the belonging relay server (No in S310), an attempt is made to connect to the relay server of the belonging center using the connection environment information of the relay server read in step S304. (S312).

As a result of the connection attempt, if the connection to the relay server of the center is successful (Yes in S314), if the bypass connection path for the center is set in the database 1000, the setting of the bypass connection path is canceled. Proceed to S311 waits for a socket command.

However, as a result of the above connection attempt, if the connection to the relay server of the affiliated center fails (No in S314), the detour connection information is queried from the database 1000 to determine whether the bypass connection path to the affiliated center is set (S322). .

As a result of the determination, if the detour connection information for the affiliated center is not stored in the database 1000 (No in S322), a relay server having the smallest number of connected application processes among the relay servers of the other centers being operated is searched (S324), By setting a bypass connection path to the center belonging to the retrieved relay server and stores the bypass connection information in the database (1000). Here, when there are a plurality of relay servers having the smallest number of application processes connected as a result of the search in step S324, it is preferable to set the relay servers having the highest priority among the relay servers as a bypass connection path to the center.                     

Subsequently, the application process reads the connection environment information (IP information, PORT information, etc.) of the relay server (bypass relay server) set as the bypass connection path from the environment file, and attempts to connect to the bypass relay server (S328, S330). )

If the connection to the bypass relay server succeeds (Yes in S332), the process proceeds to step S311 described above, and waits for a socket command. If the connection to the bypass relay server does not succeed (No in S332), the application process The connection to the database 1000 is terminated (S307).

Unlike the operation of the application process configured in the center, the relay server configured in the center performs the data relay operation for the currently connected process by identifying the number of currently connected processes through the procedure as shown in FIG.

A detailed procedure for this will be described with reference to the flowchart shown in FIG. 6.

First, it is assumed that the relay server which is initially driven is the relay server 1340 of the center 3 shown in FIG.

The relay server 1340 reads DB environment connection information (DB alias name, SID, etc.) from the DB connection environment file provided in the server host device, and reads the server ID, IP, PORT, etc. from the listen port environment file of the relay server. The host name, IP, PORT, center ID, and the like are read from the environment file for connection between relay servers (S402, S404, S406).

Then, the relay server 1340 attempts to connect to the database 1000 using the DB connection environment information (S408), and if the connection to the database 1000 fails (No at S308) to the database 1000. If the connection is terminated (S411), and if the connection of the database 100 is successful (YES in S308), the process connection-related variables are initialized (S412).

Subsequently, an attempt is made to connect to the relay server of the other center by using the connection environment information of the relay servers of the other center read in step S406 (S414), thereby forming a data relay network between the relay servers that have been successfully connected. Thereafter, if the command input is detected while waiting for a command input from the relay server of another center or the application process of the affiliated center, it is determined whether the command is a socket connection request (S416).

As a result of the determination, if the command is not a socket connection request command (No in S416) and an interprocess data relay command (Yes in S417), the process proceeds to step S502 of FIG. 7 to be described later to perform a data relay procedure, and the data between application processes. If it is not a relay command (No in S417), the process proceeds to step S414 described above and retries the connection to the relay server of another center not connected. Here, the command includes information on the sender side (transmission center, process segment, process ID), instruction segment (connect instruction related to socket connection such as connection request, disconnection, and data relay instruction such as reception, test, repair request, repair completion), and reception. Since it is composed of side information (reception center, branch office, process division) and the like, it is possible to distinguish whether the instruction is a socket connection request instruction or a data relay instruction by the instruction division.

On the other hand, if it is determined in step S416 that the command input to the relay server 1340 is determined to be a socket connection request command (Yes in S416), the relay server 1340 accepts the socket connection request to connect the corresponding application process. If it is determined whether the maximum number of connection allowance process is exceeded (S418).                     

As a result of the determination, if it is determined that the maximum number of connection allowance processes is exceeded (Yes in S418), a message for exceeding the number of connection allowance processes is output to the corresponding process (S420), and the process proceeds to the above-described step S420 to relay to another center not connected. Retry the connection to the server.

If it is determined in step S418 that the maximum number of connection allowable processes is not exceeded (No in S416), it is determined whether the application process that requests socket connection is a bypass connection application process of another center (S422). If it is determined that the process is a bypass connection process of another center (Yes in S422), the access approval message is transmitted to the process while allowing access to the bypass connection process of the other center and storing the variable as the bypassed access process information. (S424), if it is determined that the process is not a bypass connection application process of another center (No in S424), the process permits access to the process of the affiliated center and stores a variable to maintain the normally connected process information. In step S426, the access approval message is transmitted.

Subsequently, the relay server 1340 updates and stores the currently connected process number information stored in the relay process information field stored in the database 1000 (S428), and proceeds to step S420 described above to a relay server of another center not connected. Retry the connection.

Next, the data relay procedure of the relay server will be described in detail with reference to the flowchart shown in FIG. 7.

As illustrated in FIG. 7, when the relay server 1340 transmits a data relay command between processes from a predetermined application process, In the sending side information included in the command, check the center and process classification of the process that sent the data (S502). If it is determined that the command is transmitted from another relay server (Yes in S504), the destination information to which the data is delivered is checked ( S506), if the destination center is the belonging center (Yes in S508), the process is searched for from the normal access process list and the data is transferred to the corresponding process. If the destination center is not the belonging center (No in S508), the detour is made. The process is searched for in the access process list and data is transmitted to the process (S512).

On the other hand, if it is determined in step S504 that the data relay command is not a command transmitted from another relay server (No in S504), it is determined whether the command is transmitted from an application process in a normally connected center (S514).

As a result of the determination, when it is determined that the command is transmitted from a process in a normally connected center (Yes in S514), the destination information to which the data is to be transmitted is confirmed from the data relay command (S516). Yes in step S516), the process proceeds to step S510 to search for the application process in the normal access process list and deliver the data to the application process. Check whether the server is connected (S518).

As a result of the check, if the relay server of the destination center is connected (Yes in S518), the data is transmitted to the relay server of the destination center (S519), and if the relay server of the destination center is not connected (No in S518). The database 1000 is searched to determine whether a detour connection path to the destination center is set (S520).

If the bypass connection path is set (Yes in S522), data is transmitted to the relay server of the bypass connection path (S524). If the bypass connection path is not set, exception processing is performed (S526). The exception is that the relay server failure of the center to receive the command has occurred and the bypass connection path has not been configured yet, or the operator of the branch to receive the command is not operating the GUI. It is desirable to guide.

On the other hand, if it is determined in step S514 that the command is not a command transmitted from an application process in a normally connected center (No in S514), the command is transmitted from the bypass connection process with reference to the bypass connection process list. It is determined whether the command (S530).

As a result of the determination in S530, if it is determined that the command is transmitted from the bypass connection process (Yes), it is determined whether the belonging center and the destination center of the bypass connection process are the same (S532), and the command is not transmitted from the bypass connection process. If NO is determined (No), the flow proceeds to step S526 described above.

If the determination center in step S532 indicates that the belonging center and the destination center of the bypass connection process are the same (Yes), the process proceeds to step S512 described above and transfers data to the bypass connection process, and the belonging center and the destination of the bypass connection process are transferred. If the centers are not the same (No), the process proceeds to step S516 described above and transfers the data to the relay server of the destination center.

In the above-described series of processes, the relay server provided in each center maintains the bypass connection path information and the bypass connection process information set for the failed relay server due to a failure in a specific relay server, and is generated during the operation of communication network maintenance. Intermediate data can be relayed accurately.

According to the present invention as described above, when a failure occurs in the relay server of one region in the communication network management system operating a plurality of relay servers, the relay server has failed by establishing an optimal bypass connection path to the relay server of another region automatically available. There is an effect that it is possible to perform normal network operation maintenance tasks without having to wait for the recovery.

In addition, the present invention has an effect that can improve the service quality because the stable service is possible in the event of a failure.

On the other hand, the present invention is not limited to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

Claims (7)

In the method of configuring automatic bypass connection path in case of a relay server failure applied to a communication network management system operating a relay server constructed for each of a plurality of centers, A first step of connecting to a relay server of another center corresponding to the bypass connection path when a failure of the relay server of the affiliated center is detected at the initial start of the application process; According to the connection request of the application process of the affiliated center, the relay server of the other center determines whether the number of currently connected application processes exceeds the maximum number of allowed access processes, and if not, allows the application process of the affiliated center to access. A second process of doing; When a data relay command is received from an application process of the affiliated center allowed to access, the relay server of the other center checks the destination center of the data and transfers the data to the relay server of the destination center and the destination application process. Data relay service method in the case of a relay server failure in a communication network management system comprising the three steps. The method of claim 1, Before the first course And preparing a first environment file in which connection environment information for the relay server of the affiliated center is stored, and a second environment file in which connection environment information for the relay server constructed for each of the plurality of centers is stored. Data relay service method in the event of a relay server failure in a communication network management system. The method of claim 2, The first process is A first step of the application process accessing a database in which the bypass connection path information of the centers and the information of the application process connected to the relay server are stored at initial startup; A second step of the application process attempting to access a relay server of a center using the first environment file; A third step of determining whether a bypass connection path has been set up from the database to the affiliated center if the relay server fails to connect; If a bypass connection path is set, connecting to a relay server corresponding to the bypass path; If the bypass connection path is not set, the fifth step of querying the number of application processes connected to the relay server of another center from the database is set as the bypass relay server and connected to the set bypass relay server. Data relay service method in case of relay server failure in a communication network management system. The method of claim 3, wherein In the fifth step The application processor In the communication network management system, a relay server failure data relay service method, characterized in that by querying the database to set the relay server with the least number of connected application processes among the relay server of the other center as the bypass relay server. delete The method of claim 3, wherein Between the second process and the third process And relaying, by the relay server of the other center, updating and storing the number of currently connected application processes stored in the database. The method of claim 3, wherein In the third process The relay server of the other center If the data is not connected to the relay server of the destination center, the communication network management system for searching the bypass connection path of the destination center in the database and transmits the data to the relay server corresponding to the bypass connection path. Data relay service method in case of relay server failure.

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