KR100258082B1 - A model for core maintenance function in atm switching system - Google Patents

Abstract

PURPOSE: A method for constructing modularized model of a basic reservation function is provided to increase a reliability, and to decrease an error by offering a modularized reservation module. CONSTITUTION: On the occasion of mounting or detaching of a resource, form management function(201) updates a form information of a memory or a database, and reports the existance of changing the form information to a testing/monitoring function(203). The testing/monitoring function(203) requires a testing or information of a hardware resource(202) having a firmware, and decides the existance of a disorder of the hardware resource(202) according to a result of requiring. A disorder report function(204) processes a result about the disorder and a recovery of the disorder by reporting the disorder and a recovery of the disorder to the testing/monitoring function(203). A disorder state library(205) stores change information of a disorder state. A service function(206) transmits a trial, a success, a failure of a service process to a reservation function through a quality statistics library(207). A quality monitoring function(208) requires a testing or a monitoring of the testing/monitoring function(203) according to a failure rate by reading a sharing service statistics information of the quality statistics library(207).

Description

How to construct a modular model of the basic maintenance function of ATM exchange

The present invention relates to a method for constructing a basic maintenance function modular model of an ATM (Asynchronous Transfer Mode) exchange, and in particular, in a distributed exchange system in which a plurality of resources such as an ATM exchange system perform services through a complex configuration on an organic connection with each other. Consistency and modularity of maintenance functions that manage the shape, failure, and condition of resources to maintain the convenience of function configuration and operational uniformity, provide reliable status management, and errors caused by each software defect that is in charge of maintenance functions. The present invention relates to a method for constructing a maintenance function modular model of an ATM exchange system to reduce the number of ATMs.

In the past, the maintenance function of exchanges was made under different concepts and configurations without a consistent model of the existence of the corresponding resource for each resource. Therefore, when the maintenance function software for each resource was configured, when the error occurred in the maintenance function, the task of finding the detected part was dependent on the software author. In addition, the preservation function configured for each resource is configured in different forms for similar functions, and thus provides the operator with the status of each resource, thus providing difficulty in determining the type of confusion and errors in operation. This problem places more strain on the maintenance of the exchange as the system becomes larger and more hardware is added. The larger and more complex the system, the less complex and inconsistent the maintenance function, the less reliability and convenience.

An object of the present invention is to provide a consistent and modularized maintenance function for managing the shape, failure, and status of each resource in a distributed exchange system in which a plurality of resources, such as an ATM switching system, operate a complex configuration on an organic connection with each other. By providing a method of constructing a maintenance function modular model of an ATM exchange system to provide convenient status management and reduce errors caused by defects of each software in charge of maintenance functions by maintaining convenience of function configuration and operational uniformity. have.

Means for achieving the object of the present invention is a configuration management step that reflects the presence or absence of the implementation of the resource in the configuration information in the database or memory when the event is mounted or unmounted, and the failure and recovery of resources A test / monitoring step of determining whether the resource has failed or is normal by requesting a test or requesting information from a hardware resource in which firmware is embedded. In case of failure or recovery of the hardware resources, a failure reporting step of directly receiving a result and processing a failure report, and a service function of a resource occupying a part of the exchange function to occupy the resource, It conveys information about attempts, successes, and failures, and maintenance functions use it. Quality monitoring that generates quality statistics library that monitors quality and periodically reads shared service statistics of the quality statistics library and considers the failure rate. Step, generating a fault state library for storing the change information of the state and delivering the information to a function requesting the change information, and a service step for occupying the corresponding resource based on the information delivered by the fault state library. Is done.

1 is a system configuration diagram of an ATM switch for explaining an embodiment of the present invention.

2 is a configuration diagram of a maintenance function of an ATM switch;

3 is a flow chart of a maintenance function configuration management model of an ATM switch;

4 is a flow chart of the maintenance function test / monitoring model of an ATM switch.

5 is a flowchart of a maintenance function failure report model of an ATM switch.

6 is a flowchart of the maintenance function quality statistics library model of the ATM switch.

7 is a flowchart of a maintenance function quality monitoring model of an ATM switch.

8 is a flowchart of a maintenance function failure state library model of an ATM switch.

Explanation of symbols on the main parts of the drawing

101: ACS 102,103: ALS

104: ISNM 105: OMP

106107: Software 108: Hard Disk

109: flow storage device 110: fault detector

111: network mover 112: operating system

113,113a: ASNM 118,118a: call control processor

119,119a: software 120,120a: software

1 is a block diagram of an ATM switching system for explaining an embodiment of the present invention.

As shown in FIG. 1, an ATM switching system includes one or more distributed ATM Switching Subsystem (ALS) 102 (103) and an Central Switching Subsystem (ACS). 101 is configured.

The subscriber switching subsystem (ALS) 102, 103 each includes a local switching module, Access Switching Network Module (ASNM) 113, 113a, and a call control processor for user call processing and maintenance. (CCCP: Call and Connection Control Processor) (118) (118a) is implemented to handle functions including call services, subscriber interface module (SIM) 115 (115a) for subscriber matching, TIM for relay call matching (Trunk Interface Module) 117 (117a).

The operation of the ATM switching system configured as described above is as follows.

First, the ALS 102, 103 operates as a concentrator having an aggregation ratio of n: m, where n is the number of user-side links 116, 116a, and m is the number of switch-side links 114, 114a. ACS 101 performs the interconnection function between subscriber ALS 102 and 103 to act as a distribution device for large capacity systems.

The call request of the subscriber enters into the subsystem via the subscriber link 122, 122a connected to the SIM 115, 115a, and the relay call is recognized by the subsystem via the trunk line link 121. Software (sw) 119 (119a) for controlling a recognized call is mounted in a Call Control Processor (CCCP) 118 (118a) to perform call control and assign switch ports to control the internal path of call exchange. Software (sw) 120, 120a is also mounted and operated on CCCP 118, 118a.

ACS 101 is in charge of the connection between the ALS 102, 103 and operation maintenance function, ACS 101 is in charge of the connection between the ALS (102), 103 Interconnect Switch Network Module (ISNM) (104) 104a is mounted. The ACS 101 has an OMP (Operation and Maintenance Processor) 105 processor for the entire system's operation maintenance, and charges the main function, and not only the system level maintenance, test, measurement and statistics functions, but also various functions with the operator. Perform I / O control function.

The OMP 105 is equipped with software 106 for controlling connection of the ISNM 104 and software 107 for collecting information for charging to execute main functions related to the service. A hard disk 108 in which information on billing, system data and software are stored, and a flow storage device 109 for carrying various data out of the system are mounted in the ACS 101. Status information and operation information of the exchange are output in text or graphic form. A workstation that provides an interface with the user and serves to visualize the information is connected to the exchange to the operating system 112, and the connection protocol uses Ethernet. The ACS 101 is equipped with a network synchronizer 111 for synchronizing the entire system with the switching network, and the ACS 101 and the ALS 102, 103 are externally mounted to detect a failure of hardware. The fault detector 110 is mounted.

2 is a block diagram of a maintenance function of an ATM switch in which the present invention operates.

In the system configuration of FIG. 1, a model of the same maintenance function configuration is applied to all resources related to the exchange service. It applies to matching, switches, processors, connection links, software, network synchronizers, fault detectors, hard disks, and floating storage devices.If the resources have a hierarchical configuration, they are further subdivided to provide the same integrity for each resource. The construction model is applied.

In FIG. 2, the maintenance function includes a configuration management 201, a test / monitoring 203, a failure report 204, a failure status library 205, a quality statistics library 207, and a quality monitoring 208. It provides maintenance of resources to the operator who operates the service function and system to be wanted.

The maintenance function starts with the configuration management function 201 which reflects the presence or absence of the implementation of the resource in the configuration information on the database or the memory when an event in which the resource is mounted or unmounted occurs. The shape management function 201 notifies the test / monitoring function 203 of the change of the shape immediately after the occurrence of the event. The test / monitoring function 203 is a function for judging a failure and recovery of a resource. The test / monitoring function 203 is a function of requesting a test to a hardware resource 202 in which firmware is built, or requesting information and receiving a result. It can be determined whether the resource has failed or is normal.

In addition, there is a failure report function 204 that directly receives and processes the result when a failure or failure recovery occurs in a hardware resource to process the failure report. Processing of the failure report 204 ends with notifying the test / monitoring 203 function of the event to perform the test. The abnormality of resources through the test / monitoring function 203 is managed as shared data using the failure state library 205.

The failure state library 205 is responsible for storing the change information of the state and transferring the information to the function requesting the change information. There is a service function 206 that enforces the occupancy of the corresponding resource based on the information delivered by such a failure state library. The service function 206 communicates information about attempts, successes, and failures of the progress of the service to the maintenance function through the quality statistics library 207. The quality monitoring function 208 periodically reads the shared service statistics information of the quality statistics library 207 and requests the test / monitoring function 203 to test or monitor when the failure rate is higher than a certain rate in consideration of the failure rate.

3 is a flowchart illustrating an ATM switch maintenance function configuration management model of the present invention.

Configuration management by resource performs infinite repetition with system startup.

The event of adding a resource occurs at initialization and when additional commands are entered by the operator. When receiving a message for adding a shape (S301), the justification for adding a shape is examined (S302). Justification is made by investigating whether the resource is already implemented and by examining whether it is in the correct location on the system. If the validity of the shape addition is examined, the shape information in the database and the memory is changed (S303). After the shape information is changed, a test / monitoring function is requested to the test / monitoring function in order to determine whether the corresponding resource operates normally (S304). After requesting the test / monitoring or after being unjustified in the legitimacy review, a message responding to the result of the shape addition is transmitted to the place where the shape addition is requested (S305).

The event that a resource is deleted is caused by a command to delete the shape of the resource by the operator. When receiving a message about the shape deletion (S306), the validity of the shape deletion is examined (S307). The justification of the configuration deletion checks whether there is a service on the resource, checks whether the resource is available for service, and checks whether there is a resource that proceeds with the resource. If the validity is reviewed and the deletion is justified, the shape information of the database and the memory is changed (S308). After it is determined that the shape information has been changed or the shape deletion is invalid, a message in response to the result of the shape deletion is transmitted to the function requesting the deletion (S309).

Figure 4 illustrates a flow chart of the ATM switch integrity function test / monitoring model of the present invention.

The test / monitoring function is configured for each resource to execute the test / monitoring when the configuration is added, when an operator command is input, and when various faults are detected. The test / monitoring function starts with the start-up and repeats the test / monitoring cycle by setting the initial value in the operating system by referring to the database (S401) to allow the periodic test / monitoring to be executed indefinitely. The test / monitor function performs a test / monitoring request message, executes a test / monitoring, receives a test / monitoring time message at a registered interval from the operating system, performs a test / monitoring process, and receives a test / monitoring cycle change message. After resetting the operating system, test / monitoring is performed to execute the function.

When receiving a message requesting a test / monitoring (S402), it is checked whether the corresponding resource is a resource registered in the shape (S403), and if it is an unmounted resource, a response message for the test request is transmitted to the requesting function (S408). In the case of the implemented resource, the test / monitoring signal message requesting the test is transmitted to the corresponding resource (S404). If there is no response from the resource (S405), the failure state library is called with the result that the resource is not available and the cause of the test / monitoring process (S407). If a response to the test / monitoring is input from the resource (S405) (S406), the fault status library is called with the result and the cause of the test / monitoring (S407), and the function requesting the test / monitoring is responded to. The message is transmitted (S408).

When the cycle from the operating system receives the test / monitoring time message (S409), the test / monitoring request message is delivered to itself (S410) to proceed with the test / monitoring (S402).

When the change request message of the test / monitoring period is received through the operation command (S411), the test / monitoring period is reset to the operating system (S412), and the test / monitoring request message is transmitted to itself (S413) so that the test can be performed. And transmits to the function that requested the change that the test / monitoring cycle change is completed (S414).

5 illustrates a flowchart of an ATM switch maintenance function failure report model.

The fault reporting function is configured for each resource and runs indefinitely with the system starting up. The details of the failure are abnormalities of various functions including power, hernia, and receive information on the presence or absence of a report from a separate device 110 that examines the failure of each resource or resource.

If the resource is a failure or receives a message that the failure is recovered (S501) and transmits a message to check the normal operation of the resource to reflect the status to the test / monitoring function (S502).

Figure 6 illustrates an ATM exchange preservation function quality statistics library model flow chart.

The quality statistics library, which is organized by each resource, occupies a resource so that the service function 206 of the resource, which is a part of the exchange function, conveys information on attempts, successes, and failures of the service occupation, and the maintenance function stores the information. It is a library for monitoring quality by using.

The library consists of initialization (S601), statistics reading (S602), service attempt (S603), service success (S604), and service failure (S605). At initialization, the cumulative value of attempts, successes, and failures is set to 0 (S606). In the case where the statistical information is required by the maintenance function, the statistical reading is transferred to a function that requires a cumulative number of attempts, successes, and failures (S607). If the service function is notified of the attempt to seize the attempt accumulation value is increased by one (S608), if the notification of the occupancy success is increased by one (S609), if the notification of the occupancy failure is not increased by one (S610).

7 shows a flow diagram of an ATM switch maintenance function quality monitoring model.

The quality monitoring function configured for each resource is a function that checks whether a failure occurs when the reference failure rate is higher than the set reference failure rate by using the cumulative quality statistics according to the cycle set indefinitely.

The measurement cycle and the reference failure rate are initialized along with the startup to register the measurement cycle in the operating system (S701). In order to initialize the basic information on the quality, the quality statistics library is called to read the accumulated attempts, successes, and failures (S702). Since the number of attempts read is the number of previous attempts, the cumulative number of failures is the number of previous failures, and the number of successes and failures is subtracted from the number of attempts, the success and failure of the occupancy are not yet hidden. Calculate (S703).

After the initialization process, iteratively repeats and measures quality. When the measurement period change message generated by the operation input command is received (S704), the measurement period is re-registered and set in the operation system (S705). Upon receiving the change message of the reference failure rate generated by the operation input command (S706), the reference failure rate is reset (S707). When the measurement time signal message is received according to the period registered in the operating system (S708), the quality statistics library is called to read the current attempt, success, and failure cumulative values (S709).

In order to calculate the statistics of the interval, the number of attempts is subtracted from the number of attempts, the difference of attempts is added, the number of attempts of the interval is calculated, and the number of failures of the interval is calculated by subtracting the previous number of failures from the cumulative failure value (S710). The number of attempts read is the number of previous attempts, the cumulative number of failures is the number of previous failures, and the number of successes and the number of failures is subtracted from the number of attempts as an attempt difference (S711). The failure rate is calculated using the interval attempts and the interval failures ( S711) When the calculated failure rate is equal to or greater than the reference failure rate (S713), it is determined whether or not there is an abnormal operation of the resource, and transmits a message to the test / monitoring function of the resource to reflect the state (S714).

8 illustrates a flow diagram of an ATM switch maintenance function failure state library model.

The failure status library, which is configured for each resource, is called from the test / monitoring function to change the information and is called from the service function in order to provide the function that executes the service with the status of resource availability and whether there is a failure. Informational library.

In the initialization (S801), which is classified as a function of providing a part and a state called from the initialization and test / monitoring to a service function, and is performed at startup (S801), the service state of a resource is initialized to be serviceable (INS) and recovery of various failures (off) (S802).

When called from the test / monitoring function (S803), if the test / monitoring result is successful (S804), the service state is made available (INS) (S805), and if there is an alarm generated, the alarm is released (S806). If the test / monitoring result is unsuccessful, the state generates an alarm to an out of service state (OOS) (S807) (S808). If the call of the library is through the test / monitoring by the failure report (S809), when a failure occurs (S810), the failure state is generated (S811) and a failure message is output (S812). When the failure is recovered, the failure state is restored (S813) and a failure recovery message is output (S814).

When a library is called by executing a test / monitoring by quality monitoring (S815), when a failure occurs (S816), a failure state is generated (S817) and a failure message is output (S818). When the failure is recovered, the failure state is set as recovery (S819) and a failure recovery message is output (S820). When it is called to retrieve information on the failure state of the resource (S821), the service state and the occurrence recovery information of the failure are provided (S822).

The present invention has the effect of simply establishing a model of the maintenance function of the ATM exchanger and efficiently establishing the maintenance function by applying the same model to all the resources constituting the exchanger.

In addition, by configuring the maintenance function as a module classified into six types for each resource, it is possible to have a maintenance function system that can flexibly adapt to the physical configuration change of the ATM switching system.

In addition, when the maintenance function is configured for each resource, even if an error occurs due to abnormal operation of the maintenance function itself, the same model is shared so that the error can be easily verified, so the maintenance function of the ATM exchanger can be easily verified. This can increase the reliability of the software itself.

Claims (7)

A configuration management step of reflecting the presence or absence of the implementation of the resource in the configuration information on the database or the memory when an event in which the resource is mounted or unmounted occurs; It is a function to judge the failure and recovery of resources, and it is necessary to determine whether the resource is out of order or normal by requesting a test on the hardware resource in which firmware is built or requesting information and receiving the result. A test / monitoring step; A failure reporting step of directly receiving a result and processing a failure report when a failure or failure recovery occurs in the hardware resource; The service function of the resource, which occupies a part of the exchange function by occupying the resource, conveys information on attempts, successes, and failures of the service occupancy, and the maintenance function uses the information to create a quality statistics library that monitors the quality. Steps; A quality monitoring step of periodically reading the shared service statistics information of the quality statistics library and requesting a test or monitoring step in the test / monitoring step when the failure rate is higher than a predetermined rate in consideration of the failure rate; A fault state library generation step of storing the state change information and transferring the information to a function requesting the change information; Method for constructing a basic maintenance function modular model of the ATM switch, characterized in that consisting of a service step of performing the occupancy for the resource based on the information delivered by the failure state library. The method of claim 1, The configuration management step includes a first step of examining the validity of adding a shape when receiving a message about adding a shape; A second step of changing the shape information in the database and the memory, if the validity of the shape addition is examined, and requesting a test / monitoring function to the test / monitoring function to determine whether the corresponding resource operates normally after the shape information is changed; A third step of sending a message to the place where the shape addition is requested, in response to the result of the shape addition after requesting the test / monitoring of the second step or after being judged unjust in the legitimacy review in the first step; Receiving a message about the shape deletion, a fourth step of examining validity of the shape deletion; If the deletion is justified and the deletion is justified, after changing the shape information in the database and the memory, or after changing the shape information or determining that the shape deletion is invalid as a result of the examination in the fourth step, the shape is deleted for the function requesting the deletion. A method of constructing a basic maintenance function modular model of an ATM exchange, comprising a fifth process of transmitting a message responsive to a result of the request. The method of claim 1, The test / monitoring phase starts with the start-up and sets the initial value to the operating system by referring to the database for the test / monitoring cycle and then checks whether the resource is registered in the configuration when receiving a message requesting test / monitoring. A first process of doing; A second step of transmitting a response message to the requested function if the review result of the first step is an unmounted resource; In the case of the resource implemented as a result of the review in the first step, a test / monitoring signal message requesting a test is transmitted to the resource, and if there is no response from the resource, the result is that the resource is unavailable and the test / monitoring is performed. A third process of calling the fault state library with the identified cause; A fourth step of, when the response to the test / monitoring is input from the resource, calling the fault state library together with the result and the cause of the test / monitoring, and sending a response message to the function that requested the test / monitoring; A fifth process of conducting a test / monitoring process by transmitting a test / monitoring request message to itself when the test / monitoring time message is received from the operating system in a cycle; When receiving the change request message of the test / monitoring cycle through the operation command, the test / monitoring cycle is reset to the operating system, the test / monitoring request message is transmitted to the user so that the test can be progressed, and the test / monitoring cycle change is completed. A method for constructing a modular maintenance module for an ATM exchange, comprising: a fifth process of transmitting a change request to a requested function. The method of claim 1, In the failure reporting step, when a resource is failed or a message has been recovered, the basic switching function modular model of the ATM switch, which transmits a message to the test / monitoring function to check the normal operation of the resource and reflect the status. How to configure. The method of claim 1, The quality statistics library generation step includes a first step of setting a cumulative number of attempts, successes, and failures to 0 when initializing the quality statistics library in the quality monitoring step; Reading the statistics when the information is required by the maintenance function comprises: a second process of transferring the cumulative number of attempts, successes, and failures to the function; A third step of increasing the cumulative number of attempts by notifying the attempted occupation in the service function; A fourth step of increasing the cumulative success value by one when notifying the success of occupancy; A method of constructing a basic maintenance function modular model of an ATM switch, comprising: a fifth process of notifying an occupancy failure by one; The method of claim 1, The quality monitoring phase registers the measurement cycle with the operating system by initializing the measurement cycle and the reference failure rate with startup, and calls the quality statistics library to read the accumulated attempts, successes and failures to initialize the basic information about the quality, and attempts to read them. Since the number of attempts as previous attempts, the cumulative number of failures as previous failures, and the number of successes and failures subtracted from the attempts, the success or failure of the occupancy is not yet masked, so the attempt difference is calculated to reflect the calculation of the interval. A first process; A second step of re-registering and setting the measurement period in the operation system when receiving the measurement period change message generated by the operation input command; A third step of resetting the reference failure rate upon receiving a change message of the reference failure rate generated by the operation input command; When the measurement time signal message is received according to the period registered in the operating system, the quality statistics library is called to read the current attempt, success, and failure cumulative values, and the previous attempt count is subtracted from the attempt count to calculate the interval statistics. A fourth step of calculating the number of attempts of the interval by summing and subtracting the previous number of failures from the cumulative failure value; The number of attempts read is the number of previous attempts, the cumulative number of failures is the number of previous failures, the number of successes and the number of failures is subtracted from the number of attempts, and the failure rate is calculated using the interval attempts and the interval failures. And a fifth process of transmitting a message to a test / monitoring function of the resource to determine whether or not there is an abnormal operation of the resource when the failure rate is equal to or greater than the reference failure rate. The method of claim 1, Fault library generation step is classified into function that provides part and state called in initialization and test / monitoring to service function. Initialization at startup initializes service status of resource as serviceable (INS) and checks for various failures. A first process of initializing to recovery (off); When called from the test / monitoring function, the service status is made available if the test / monitoring result is successful, the alarm is cleared if there is an alarm generated, and if the test / monitoring result is unsuccessful, the status is triggered. Making a second process; A third process of generating a fault condition and outputting a fault message if a fault occurs if the call of the library is through a test / monitoring by a fault report; A fourth step of recovering a failure state and outputting a failure recovery message when the failure is restored; A fifth step of performing a test / monitoring by quality monitoring and generating a failure state when a failure occurs when the library is called, and outputting a failure message; A sixth step of recovering a failure state and outputting a failure recovery message when the failure is restored; 7. The method of constructing a basic maintenance function modular model of an ATM switch, comprising: a seventh process of providing a service state and recovery information of a failure when called to retrieve information on a failure state of a resource.

Images