KR19980050434A - Data Recovery Method in Communication Management Network Agent System for Exchange - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Data Recovery Method in Communication Management Network Agent System for Exchange

2. The technical problem to be solved by the invention

Dynamically and automatically collect and generate data from ATM exchanges for data recovery of TMS Agents, and automatically log state changes that occur at ATM exchanges during restart To provide a data recovery method to be applied.

3. Summary of Solution to Invention

In the present invention, when the agent system receives the recovery data collected from the operation maintenance processor (OMP) by requesting the recovery data from the operation maintenance processor of the exchange, it stores the file and then requests the log data from the operation maintenance processor to maintain the operation. When receiving log data collected from the maintenance processor, the log data is decoded and executed so that the agent system operates stably and accurately by reflecting the state change occurring in the exchange during the restart period to the agent system.

4. Important uses of the invention

Used for communication management network agent system for exchange.

Description

Data Recovery Method in Communication Management Network Agent System for Exchange

The present invention relates to a data recovery method for recovering data required in case a restart occurs while an agent, a management agent, performs a function in a communication management network (TMN) system.

Telecommunication Management Network (TMN) functions based on the Common Management Information Protocol (CMIP) standardized by the International Organization for Standardization (ITU-T) and the Asynchronous Forum (ATM Forum) are being implemented worldwide. In Korea, it is implemented in MSS (Metropolitan Switching System) exchange. Agent's data recovery in MSS chooses to get data by polling related applications in Agent.

In this conventional method, since the data recovery of the agent depends on the function of the related application, it takes a long time to recover the data, increases the load of the related application, and manages the communication due to the problem of the related application. Data recovery of the network agent may be impossible, and if the state of the ATM exchange is changed during the data recovery process of the agent, there is a problem in that it cannot be reflected to the TMN agent.

As there is a communication management network agent in a system separate from the asynchronous delivery mode switch, the communication management network agent system may restart.In this case, the agent should be restored to the data just before restarting, and during the restart, the agent must be restored. All state changes that occur at If this state is not restored, normal and stable network element management is impossible.

In order to solve the above problems, the present invention is to dynamically and automatically collect and generate data from an asynchronous transfer mode (ATM) exchange for data recovery of a TMN agent and to perform an asynchronous transfer mode during restart. It is an object of the present invention to provide a data recovery method that automatically logs and applies state changes occurring in an ATM) exchange.

1 is a diagram illustrating a connection between an asynchronous delivery mode (ATM) exchange and an agent system to which the present invention is applied;

2 is a block diagram illustrating a message flow between an agent system and an asynchronous transfer mode (ATM) exchange to which the present invention is applied;

3 is a flowchart illustrating a data recovery operation procedure in an agent system according to the present invention;

4 is a flow diagram illustrating a procedure of operation of logging and collecting recovery data in an operational maintenance processor (OMP) of an asynchronous delivery mode switch in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

201: Agent System 204: ACS

205: Operational Maintenance Processor

In order to achieve the above object, the present invention provides a data recovery method applied to a communication management network agent system for an exchange, the operation maintenance processor (OMP) of the recovery data necessary for the agent system for data recovery of the agent system (OMP) The first step required); A second step of collecting the requested recovery data from a database management system (DBMS) in the operation maintenance processor (OMP) that has received the recovery data from the agent system; A third step of requesting log data required by the operation maintenance processor after storing the data in a file in the agent system receiving the recovery data from the operation maintenance processor; A fourth step of collecting, by the operation maintenance processor, log data requested from the agent system, and transmitting the log data to the agent system; And a fifth step in which the agent system, having received log data from the operation maintenance processor, decrypts log data, executes a command, and reflects the log data to the agent.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a diagram illustrating a connection between an asynchronous delivery mode (ATM) exchange and an agent system to which the present invention is applied.

The asynchronous delivery mode switch consists of two subsystems, an ATM Central Switching Subsystem (ACS) 101 and an ATM Local Switching Subsystem (ALS) 102, and an Agent System 110.

The ACS 101 performs a function of operating, maintaining, and managing a system, and maintaining various traffic information, statistics, and billing information, and includes an operation and maintenance processor (OMP) 103. have.

The ALS 102 is a processor that performs access processing of a general subscriber. The ALS 102 performs access control according to a subscriber service request together with a subscriber matching circuit, and performs a traffic control function such as access admission control and congestion control. . The ALS 102 provides data for asynchronous delivery mode exchange components managed by a communication management network agent. The ALS 102 is installed in multiple numbers depending on the subscriber and includes a Call Connection Control Processor (CCCP) 104.

The Central Switch Network Module (CSNM) 105 is responsible for the switches for each Access Switch Network Module (ASNM) 106, and the ASNM 106 is responsible for the subscriber switches in the ALS 102. Operational Maintenance Processor (OMP) 103 is connected to one port of CSNM 105 and CCCP 104 to one port of ASNM 106 via an Inter Module Interface (IMI) link, respectively, to send and receive messages. The communication between the CCCP 104 is made of a three-stage structure of ASNM-CSNM-ASNM, and the communication between the operation maintenance processor 103 and the CCCP 104 is made of a two-stage structure of the CSNM-ASNM.

The operation maintenance processor 103 includes, as part of the present invention, a database matching function (DBIF), which is a block that collects initial data required for the agent system from the asynchronous delivery mode exchange and logs a state change occurring in the asynchronous delivery mode exchange. Interface Function (107) exists, and initial data is obtained from a Local Data Base (LDB) by calling a Database Base Management System (DBMS) 108.

The database matching function (DBIF) 107 can also obtain data existing in processors other than the operation maintenance processor 103 by using the distributed database management system 108. The database management system 108 has a distributed structure for managing data distributed among multiple processors, and resides in main memory for real time processing.

The database matching function (DBIF) 107 is assigned to an HANDF (HMIF) 109 block present in the operation maintenance processor 103 to log the status arising from the asynchronous delivery mode exchange during communications agent network data recovery. It requests data for logging and saves it to disk. When the initialization of the agent system is completed, the log existing on the disk is sent to reflect the state of the asynchronous transfer mode switch.

In the agent system 110, there is an agent 111 which requests the agent data recovery of the present invention, performs an initialization function and a recovery function, and communicates with the operation maintenance processor 103 (Sparc Real-time). Operating System 112). The log for recovering the agent system 110 collected by the operation maintenance processor 103 is stored and applied to the disk 113 existing in the agent system 110 as a file.

2 is a block diagram illustrating a message flow between an agent system and an asynchronous transfer mode (ATM) exchange to which the present invention is applied.

Agent main process 202 present in agent system 201 calls a Network Element Interface Function (NEIF) block 203 to recover the necessary data. The network element matching function (NEIF) 203 is a database matching function (DBIF :) of the operation maintenance processor 205 existing in the ACS 204 of the asynchronous delivery mode exchange for data required for the communication management network agent system 201. Data Base Interface Function (206) block requests data transmission of the communication management network agent system 201.

Database matching function (DBIF) 206 requests logging data by signaling to HANDF 213 to begin logging the state change of the asynchronous delivery mode exchange. The HANDF 213 then sends all data about state changes that occur in the asynchronous delivery mode exchange to the database matching function (DBIF) 206, which in turn maintains the data. Stored in disk 214 of processor 205. This data is an instruction that the agent system 201 can execute after completing the initial data recovery.

At the same time, the database matching function (DBIF) 206 obtains the data requested from the network element matching function (NEIF) 203 by calling the database management system (DBMS) 207 and is present in the agent system 201. To the network element matching function (NEIF) 203. The network element matching function (NEIF) 203 opens a file for storing data of the relation and stores the received data on the disk 208. The data to be transmitted is made up to the maximum size of the data transmitted during the asynchronous delivery mode exchange with the agent system 201.

When all data necessary for the communication management network agent is transmitted, the agent main process 202 calls the configuration management process 209 to perform the initialization operation of the agent system 201 and to create an associated management object instance. The agent main process 202 calls Network Element Matching Function (NEIF) 203 after this process to request a log of state changes that occurred in the asynchronous delivery mode switch while the agent creates the initialization and management object instances. Network element matching function (NEIF) 203 logs to database matching function (DBIF) 206 present in operational maintenance processor 205 to obtain log data present on disk 214 of the asynchronous delivery mode switch. Require transfer.

The database matching function (DBIF) 203 reads the logs existing on the disk 214 one by one, and serves as an interface for performing a network management function during an asynchronous transfer mode exchange with the agent system 201 (CAS). for Agent and ATM Switching System) (210). The CASS 210 receives the log in the connector module (CM) 212 to perform the first decryption and performs detailed decryption in the interface module (IFM) 211 to manage the communication network agent. Convert to a command. The matching module (IFM) 211 sends the converted communication management network agent command to the related management object instance generated by the agent main process 202 to perform it.

The database matching function (DBIF) 206 notifies the network element matching function (NEIF) 203 of the log transfer completion when all log transfers existing on the disk 214 are completed. The network element matching function (NEIF) 203 sends a log transmission completion to the agent main process 202, which completes data recovery of the communication management network agent system.

3 is a flowchart illustrating a data recovery operation procedure in an agent system according to the present invention.

When the execution of the agent main process is started in the agent system (300), data recovery is requested by the network element matching function (NEIF) in order to recover data to be used in the communication management network agent system (301). The network element matching function (NEIF) sends a signal to a database matching function (DBIF) block existing in an operation maintenance processor (OMP) of an asynchronous delivery mode switch and requests data for recovery of the communication management network agent (302). . Set a time out for the time to wait to receive a message from the operational maintenance processor (OMP) (303) and transition to the wait state (304).

When data is received from the DBMP block of the Operational Maintenance Processor (OMP) (305), the set time out is released and stored in the data file created in advance. OMP's database matching facility (DBIF) continues to send data needed for agent recovery, and the agent system stores this data in files. When data transfer is completed, data generation for agent recovery is completed (306). After that, the agent main process executes configuration management using the generated data, creates a management object instance, and prepares for management of the asynchronous delivery mode switch. When all the management object instances are created, it sends a signal to the network element matching function (NEIF) to request to apply the state change log generated by the asynchronous delivery mode switch during the preparation of the communication management network agent (307). The network element matching function (NEIF) requests log transmission to the database matching function (DBIF) of the operation maintenance processor (OMP) in order to apply a log for a state change (308). Then, a time out for receiving log data is set (309) and the state transitions to the waiting state (310).

On the other hand, if a timeout occurs while waiting for recovery data from the database matching function (DBIF) (318), the error message is output (319), and abnormal completion is reported to the agent main process (320). .

The Operational Maintenance Processor (OMP) 's Database Matching Function (DBIF) reads the log from disk and sends it to the CM, the Exchange Connection Module of CASS. When the CM receives the log (312), it classifies whether it is related to the communication management network agent, receives the log (315), and transmits the log to the IFM for command decryption. The received log is stored on the agent system's disk in case of loss. The IFM decodes the command to distinguish whether it is a command to be executed by the network management agent, and deletes the command if it is not needed. If the command is to be executed, it is converted to a communication management network command and transmitted to the related management object instance of the agent (316). The associated management object instance of the agent reflects the state change that occurred at the exchange by executing the transmitted communication management network command (317). Then, the state transitions to the standby state 310 to receive the next log from the database matching function DBIF of the operation maintenance processor OMP.

On the other hand, upon receiving the log reception end from the database matching function DBIF of the operation maintenance processor OMP (311), the log application completion is reported to the agent main process and terminated (314).

On the other hand, if a time out occurs in the log data reception waiting state (313), the error content is output (319), and the abnormal completion is reported to the agent main process (320), and then terminated.

4 is a flowchart illustrating a recovery data logging and collection operation procedure of a database matching function (DBIF) in an operation maintenance processor (OMP) of an asynchronous delivery mode switch according to the present invention.

The database matching function (DBIF) waits to start performing when the operation maintenance processor (OMP) starts operation (401) and receives a data collection request from the network element matching function (NEIF) of the agent system (402). In order to collect the required data, the database management system (DBMS) is called to retrieve the required data. When retrieval of the data is completed, the data is composed of a message (403) and transmitted to the network element matching function (NEIF) (404). Then, it transitions to the standby state 401 to receive the next request from the network element matching function (NEIF).

When a log data transmission for the communication management network agent data recovery is requested from the network element matching function (NEIF) of the agent system (405), the log file existing on the disk is opened (406) and the logs are sequentially searched (407). Check whether the log data is the end (408), if not the end, construct a log message (409) and send it to the CM of the CASS of the agent system to reflect the change in the state of the exchange (410), and transition to the log search (407) Repeat this process until there are no more log data in the file. On the other hand, when the log data is retrieved from the file, the file is closed (411) and a signal is sent to the HANDF requesting that the log data transmission of the asynchronous transfer mode switch is stopped (412). Finally, the network element matching function (NEIF) indicates that there is no more log data (413) and terminates.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above can obtain the following effects.

First, since data is dynamically obtained from an asynchronous mode switch, it is possible to maintain the same data as an asynchronous mode switch.

Second, by collecting the data of the asynchronous transfer mode exchange by the agent itself and reflecting the log data, it is possible to reflect the state of the asynchronous transfer mode exchange during restart, and to achieve the stability and accuracy of network management.

Third, since data and log data are collected from the asynchronous delivery mode exchange by its own function, it is easy to collect additional data.

Fourth, since data and log data are easily collected by its own functions, it is easy to expand and add functions of a communication management network agent without relying on other applications.

Claims (6)

CLAIMS 1. A data recovery method applied to a communication management network agent system for a switch, comprising: a first step of requesting an OMP of the recovery data necessary for the agent system for data recovery of the agent system; A second step of collecting the requested recovery data from a database management system (DBMS) in the operation maintenance processor (OMP) that has received the recovery data from the agent system; A third step of requesting log data required by the operation maintenance processor after storing the data in a file in the agent system receiving the recovery data from the operation maintenance processor; A fourth step of collecting, by the operation maintenance processor, log data requested from the agent system, and transmitting the log data to the agent system; And a fifth step in the agent system that has received log data from the operation maintenance processor, decodes log data, executes a command, and reflects the command to the agent. 2. The method of claim 1, wherein the first step comprises: requesting data recovery with a network element matching function (NEIF) to recover data to be used for the agent system when execution of an agent main process begins; The network element matching function (NEIF) sends a message to a database matching function (DBIF) existing in the operation maintenance processor (OMP) to request data for recovery of a communication management network agent; And transitioning to a first waiting state after setting a time out for a time waiting to receive a message from the operational maintenance processor (OMP). 3. The method of claim 2, wherein the second step comprises: receiving a data collection request from a network element matching function (NEIF) of the agent system in a second waiting state in which the database matching function of the operation maintenance processor waits for a request message; Doing; Calling the database management system (DBMS) to retrieve the required data to collect the required data; And when the retrieval of the data is completed, converting the data into a message and transmitting the data to the network element matching function of the agent system, and then transitioning to the second standby state. 4. The method of claim 3, wherein the third step comprises: releasing a time out set when receiving data from a database matching function DBIF of the operation maintenance processor OMP in the first standby state; Storing data in a pre-produced data file to complete data generation; Requesting to apply a state change log generated at the exchange during a management object instance generation period when data generation is completed; A network element matching function (NEIF) of the agent system is a time for receiving log data after requesting log data to a database matching function (DBIF) of the operation maintenance processor (OMP) to apply a log for a state change. Setting a time out and transitioning to a third standby state; And outputting an error content and reporting abnormal completion to an agent main process when a time out occurs in the first standby state. The method as claimed in claim 4, wherein the fourth step further comprises: when the log data transmission is requested in the second standby state, opens a log file existing on the disk, sequentially searches for logs, and then determines whether the log data is over. step; Repeating the log search process after constructing a log message and transmitting it to the agent system if it is not the end of the log data as a result of the determination of the log data end determination step; And as a result of the log data end determination step, request to close the file and stop the log data transmission when the log data has been retrieved from the file and transmit the log data termination message to the network element matching function (NEIF) of the agent system. And recovering the data. 6. The method of claim 5, wherein in the fifth step, when the log is received from a database matching function (DBIF) of the operation maintenance processor (OMP) in the third standby state, the log is classified as being related to a communication management network agent. Receives the data, stores it in the disk of the agent system, decodes the command to classify the execution command of the communication management network agent, converts the command into a communication management network command, and executes it on the management object instance of the agent system to generate the state at the exchange. Transitioning to the third standby state after reflecting the change; Reporting completion of log application to the agent main process upon receiving a log reception end message from a database matching function (DBIF) of the operation maintenance processor (OMP) in the third waiting state; And reporting an abnormal completion to the agent main process after outputting an error content when a time out occurs in the third waiting state.