KR100975218B1 - Network management function testing apparatus and testing method - Google Patents

Abstract

The present invention discloses a test apparatus and test method for testing the network operation management function of the optical transmission device.

The test apparatus of the present invention generates a GDMO compiler that compiles GDMO to generate management information, an IDL compiler that compiles IDL to generate a management function library, and generates test data required for a function defined in the management information or management function library. A test data generator to transmit corresponding test data to the test target optical transmission device according to an interface provided by the test target device, to receive and output a response, and to receive and output an event report generated by the optical transmission device. An incident reporting processor is provided to selectively test whether each optical transmission device conforming to a different international standard normally performs the functions defined in that standard recommendation.

Description

Network management function testing apparatus and testing method

1 is an overall system configuration for the network operation management function test of the optical transmission device according to the present invention.

Figure 2 is a block diagram showing the configuration of the network operation management test apparatus 100 according to the present invention.

3 is a flowchart illustrating a method of testing an optical transmission device using a test device according to the present invention.

The present invention relates to a network operation management function test apparatus and method of the optical transmission device, and more particularly, to test whether the network operation management function provided by the standardized method in the optical transmission device to meet the requirements of network operators. It relates to a test apparatus and a method.

In general, a variety of manufacturers and manufacturers of communication devices and a variety of technologies applied to the devices have been used in combination. Accordingly, the International Organization for Standardization recommends that various types of standards be established for the unified management of a mixed network of protocols and applications, and that information is exchanged by predetermined appointments in heterogeneous distributed environments.

Accordingly, various network operation management systems have been used for smooth information exchange and supervisory control between an optical transmission device or an element management system (EMS) for managing the same and a network management system for managing an entire network.

As such a network operation management system, a TN (Telecommunication Management Network) method using a guideline for the Definition of Managed Objects (GDMO) defined by the International Telecommunications Union Telecommunication Standardization Sector (ITU-T), a protocol for exchanging them, and the like. The network operation management system, the common object request broker architecture (CORBA) technology defined by the Object Management Group (OMG) and the TeleManagement Forum (TMF), and the network operation management system using the network management information using the same are being used.

The network operation management function implemented on the optical transmission device or the device management system also varies according to the complexity of the network operation management function and modeling defined by the standardization organization, and the various requirements of each optical transmission device manufacturer and the network operators using the same.

For the network operator, it is hoped that the optical transmission device is equipped with a consistent network operation management function. When the new optical transmission device is introduced, various functions defined by the standardization organization are defined by the standardization organization using protocols and interfaces defined by the standardization organization during a short test period. You need to test whether or not you provide them.                         

To this end, a test apparatus for testing the network operation management function of the optical transmission apparatus by communicating the management information defined by the standardization body according to the standard defined by the standardization body is required. In addition, there is a need for a network operation management function test apparatus having flexibility to add management information and test a function according to the necessity.

Accordingly, an object of the present invention to solve the above-mentioned requirements is to make it easy to test the network operation management function of optical transmission devices providing different international standards with one test device.

In the network operation management function test apparatus of the present invention for achieving the above object in the network operation management function test apparatus for optical transmission devices for transmitting optical signals using the Q3 interface and OMG CORBA interface defined in ITU-T A GDMO compiler using the Q3 interface and compiling GDMO defined by the ITU-T to generate management information; An IDL compiler that uses the CORBA interface and compiles IDL defined in TMF to generate a management function library; Generate test data required for the function defined in the management information or the management function library, but change the batch test data and parameters for continuously testing functions that do not require parameter setting, and test one function at a time. A test data generator for generating data for a single function test; At least one tester for selecting an interface provided by a test target optical transmission device, transmitting test data corresponding to the selected interface among the test data to the test target optical transmission device, and receiving and outputting a response; And an event report processor for receiving and outputting an event report generated by the optical transmission device.

The network operation management function test method of the present invention is a network operation management test method for optical transmission devices that transmit optical signals using the Q3 interface defined by ITU-T and the CORBA interface of OMG, and the management information for using the Q3 interface. Generating a management function library for using the CORBA interface; A second step of creating test data required for the function defined in the management information and test data required for the function defined in the management function library; A third step of transmitting test data corresponding to the test target optical transmission device to the test target optical transmission device according to an interface type provided by the test target optical transmission device; And a fourth step of receiving and outputting a response to the test data from the test target optical transmission device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall system configuration for the network operation management function test of the optical transmission device according to the present invention.

The network operation management test apparatus 100 may be configured according to the standard defined by the standardization organization for the interface, optionally according to the interface types provided by the optical transmission apparatuses 300 or the device management systems (EMS) 210 and 220 managing them. The network operation management function of the optical transmission device is tested.

The Q3 agent 210 is connected to the Q3 interface defined by the ITU-T implemented in the network management management agents 310 or the device management system (EMS) managing the same in the optical transmission device operated according to the Q3 interface defined by the ITU-T. Therefore, it is an agent for network operation management function of optical transmission device.

The CORBA agent 220 manages the network operation management of the optical transmission device according to the CORBA interface defined in the OMG defined in the network management management agents 320 or the device management system managing the same in the optical transmission device operated according to the CORBA interface defined by OMG. Agent for function.

In the present invention, the manager for these agents 210 and 220 becomes the network operation management test apparatus 100.

The optical transmission apparatuses 300 are apparatuses having a network management management Q3 interface or a CORBA interface or communicating with an agent that acts on the same, and are multiplexed data, converted into optical signals, transmitted over a long distance, and demultiplexed received optical signals. . Here, the optical transmission apparatuses 300 are optical transmission apparatuses 310 for which the network operation management function is substituted by the Q3 agent 210, and optical transmission apparatuses 320 for which the network operation management function is substituted by the CORBA agent 210. ) And a Q3 agent or CORBA agent operating according to the Q3 or CORBA interface are divided into optical transmitters 330 and 340 existing inside the optical transmitter.

2 is a block diagram showing the configuration of the network operation management test apparatus 100 according to the present invention.

The GDMO compiler 110 compiles the GDMO for network operation management of the optical transmission device defined in ITU-T to configure management information. Such management information is stored in the management information DB 140.

The Interface Definition Language (IDL) compiler 120 uses the CORBA interface defined by OMG, and defines between the Element Management Layer (EML) and the Network Management Layer (NML) for network operation management of optical transmission devices defined by the Telemanagement Forum (TMF). Compiled IDL to create a management function library. This management function library is stored in the management function library DB (150).

The management information and management function libraries contain the contents required for the functions recommended by ITU-T and TMF, respectively, to test whether the optical transmission equipment meets these requirements using test data.

The test data generator 130 prepares test data for a network operation management function test for the Q3 and CORBA interfaces according to the function definition applied to the network operation management of the optical transmission device. These test data are divided into batch test data that can continuously test functions that do not require special parameter setting, and single function test data that can test one function at a time and change parameters as necessary. The test data is prepared by the tester by using the test data generator 130 for test items required for the network operation management function definition. The test data created by the test data builder 130 is stored in the test data DB 160.

The batch tester 170 selects an interface (Q3 or CORBA) corresponding to the optical transmission device to be tested, and provides an interface for the test items for batch testing among test data suitable for the selected interface one by one (210, 220). Or the optical transmission apparatuses 330 and 340 to receive the response. When the batch tester 170 receives the response, the batch tester 170 outputs the result to the screen or records the file in a file.                     

The single function tester 180 selects an interface (Q3 or CORBA) corresponding to the optical transmission device to be tested, and provides the interface with the single function test data corresponding to the selected interface according to the tester's command (210, 220) or It transmits to the optical transmission devices 330 and 340 and receives the response. Then, the single function tester 180 outputs the response to the screen or writes it to a file. For example, a specific part (eg, STM-1, SMT-4, STM-16 dependent signal processing unit) of the optical transmission device is designated and the state and information of the location are inquired according to a given condition.

The event report processor 190 receives events reported automatically from the optical transmitters 330 and 340 or the agents 210 and 220 managing the optical transmitters 330 and 340, and outputs them to a screen or stores them in a file. That is, the optical transmission apparatuses 300 should have a function of automatically reporting not only a problem or a state change inside the apparatus but also a state change and a problem outside the apparatus related to the optical transmission apparatus 300 to a predetermined network management system. Processor 190 receives these automatic reporting events.

Network operation management functions of the optical transmission apparatus that can be tested in the network operation management test apparatus described above include a failure management, performance management, and configuration management functions, the details of which are shown in Table 1 below.                     

TABLE 1

Major items

Details
Functional classification
Fault management function Providing all alarms currently occurring batch Alarm generation history single Alarm auto report function Incident report Status change automatic report function Incident report
Performance management function Performance threshold provision function batch Function to provide current performance value single Historical performance value provision function single Performance threshold setting function single Automatic Reporting Over Performance Thresholds Incident report
Configuration management function Function to provide unit configuration details mounted on optical transmission device batch Function to provide all managed objects existing in optical transmission device batch Function to provide specific management object existing in optical transmission device single Function of providing cross connection details existing in optical transmission device batch Cross connection setup function single Unit and pass switching function single Operation clock source provision function batch Operation clock source setting function single

3 is a flowchart illustrating a method of testing an optical transmission apparatus using a network operation management test apparatus according to the present invention.

First, it is determined what interface is provided by the optical transmission device 300 to be tested (step 311).

When the optical transmission apparatus 300 or the agent managing the same provides the Q3 interface, the GDMO compiler 110 compiles the information recommended by the GDMO and the manufacturers for network operation management of the optical transmission apparatus defined in ITU-T to obtain management information. It generates and stores in the management information DB 140 (step 312).

The ITU-T recommendation applied to the network operation management test apparatus 100 for network operation management of optical transmission devices is described in terms of M.3100, X.710, X.711, X. 721 has been applied and the recommendations of the G.774 series of synchronous optical transmitters have been applied. The Q.821 and Q.822 Recommendations, which define fault management and performance management functions, are applied. In addition, recommendations that optical transmission device manufacturers consider necessary, or their extended GDMO, can be added as needed.

The tester prepares test data required by a function definition (GDMO, MOCS: Managed Object Conformance Statement) for network operation management using the test data generator 130 and stores the test data in the test data DB 160 (step 313).

The test apparatus 100 loads the management information of the management information DB 140 (step 314), and loads the test data of the test data DB 160 (step 315) to provide the Q3 interface. Prepare for test 330).

The batch tester 170 performs a batch test on the optical transmission apparatuses 310 and 330 using the test data when there is test data for the batch test among the test data (step 316). For this batch test, the batch tester 170 obtains batch test data required for the function defined in the management information one by one from the test data DB 131 and transmits it to the Q3 agent 210 or the optical transmission device 330. And wait for the response.

At this time, transmission of test data and reception of response apply NMP (Network Management Protocol) 2 protocol stack based on ITU-T Recommendations G.784, Q.811, and Q.812. In addition, with the spread and spread of the Internet, ITU-T has expanded the use of Request For Comments (RFC) 1006 that can use TCP / IP in the lower layer of the OSI (Open System Interconnection) protocol stack. The device 100 also allows the user to select a protocol stack using the NMP2 protocol stack and RFC1006 as a lower layer.

When the batch tester 170 receives a response to the test data from the Q3 agent 210 or the optical transmission device 330, the batch tester 170 displays the result on the screen or stores the result in a file. Of course, it is obvious that both screen display and file storage can be performed.

The batch tester 170 repeatedly executes the batch test until the test for all the batch test data ends. The investigator checks the test results by viewing the information displayed on the screen or through a saved file after the batch test is over.

Next, when the single function tester 180 has a single function test data among the test data, the single function tester 180 inquires a state and an alarm of a specific part of the optical transmission apparatuses 310 and 330 according to a given condition using the test data. A functional test is performed (step 317).

For such a single function test, the single function tester 180 selectively adds a test data by selectively adding a name (identifier), a function to be tested, a test range, a test condition, etc., to distinguish a specific part of the optical transmission device. Correct it. After the modification of the test data is completed, the single function tester 180 transmits the test data to the optical transmission device 330 or the Q3 agent 210 and waits for a response. When the single function tester 180 receives the response, the single function tester 180 displays the result of the response on the screen or stores the result in a file. The investigator can repeat the test by checking the test results displayed on the screen and changing the test data as necessary. This single function test repeats this process for each single function test item as in the table of FIG. 3.

Next, the event report processor 190 tests the event report processing function of the optical transmission devices 310 and 330 (step 318).

When the investigator manipulates the optical transmission device 300 to generate an alarm or induces a state change, the optical transmission device is to report such an event automatically. The event report processor 190 receives the automatic reporting failure and the event and Display the results or save them to a file.

The tester repeats this process for each event report test item as shown in the table of FIG. 3 to test the overall event report function of the optical transmission device 300.

It is obvious that the sequence of batch tests, single function tests, and event report processing functions described above may be interchanged.

If the interface provided by the optical transmission device to be tested in step 311 is CORBA, the TMF recommendation and IDL provided by the optical transmission device manufacturer are compiled to generate a management function library, and then stored in the management function library DB 150 ( Step 319). In addition, the tester prepares test data (batch test data and single function test data) required for network operation management function definition for the CORBA interface using the test data generator 130 and stores the test data in the test data DB 131 ( Step 320).                     

Manufacturers of optical transmission devices can extend or further define IDL if they have the necessary features in addition to those recommended by the TMF. The added IDL file is compiled by the IDL compiler 120 and added to the management function library.

Next, the test apparatus 100 loads the management function library of the management function library DB 150 (step 321).

Hereinafter, the batch test, single function test, and event report processing function test for the CORBA agent 220 and the optical transmission device 340 that provide the CORBA interface after loading test data are performed in the same manner as in the case of the Q3 interface described above. Detailed description thereof will be omitted.

However, the protocol used is IIOP (Internet Inter-ORB Protocol) based on TCP / IP defined by OMG, and uses management function library instead of management information. The test data also uses the test data required for the function defined in the management function library.

The CORBA interface uses the TMF 513, TMF 608, and TMF 814 versions 2.0, the EML-NML interface defined by the Telemanagement Forum (TMF), to test network management functions.

As described above, the network operation management test apparatus of the present invention uses the network operation management function definition and function test data of the optical transmission apparatus according to the interface provided by the optical transmission apparatus and provides the network operation management provided by various optical transmission apparatus manufacturers in a short period of time. You can test whether a function operates normally in accordance with international standard recommendations.

Claims (8)

delete In the network operation management function test apparatus for optical transmission devices that transmit optical signals using the Q3 interface defined by ITU-T and the CORBA interface of OMG, A GDMO compiler using the Q3 interface and compiling GDMO defined in the ITU-T to generate management information; An IDL compiler that uses the CORBA interface and compiles IDL defined in TMF to generate a management function library; Generate test data required for the function defined in the management information or the management function library, but change the batch test data and parameters for continuously testing functions that do not require parameter setting, and test one function at a time. A test data generator for generating data for a single function test; At least one tester for selecting an interface provided by a test target optical transmission device, transmitting test data corresponding to the selected interface among the test data to the test target optical transmission device, and receiving and outputting a response; And Event report processor for receiving and outputting the event report generated by the optical transmission device Network management test device comprising a. The method of claim 2, The tester, A batch tester for transmitting all test items of the batch test data to a corresponding optical transmission device and receiving a response; And Single-function tester for transmitting to the optical transmission device according to the test command of the tester for each test item of the single-function test data and receive the response Network management test device comprising a. The method of claim 3, wherein The single function tester, And modifying the single function test data by selectively adding a name, a function to be tested, a test range, and a test condition for identifying a specific part of the optical transmission device to the single function test data, and transmitting the same to the optical transmission device. Network operation management test device. delete In the network operation management test method for optical transmission devices that transmit optical signals using Q3 interface defined by ITU-T and CORBA interface of OMG, Generating management information for using the Q3 interface and a management function library for using the CORBA interface; As test data required for the function defined in the management information and test data required for the function defined in the management function library, the batch test data and parameters for continuously testing functions that do not require parameter setting are changed at a time. Creating single function test data for testing one function; A test data transmission step of transmitting test data corresponding to the test target optical transmission device to the test target optical transmission device according to an interface type provided by the test target optical transmission device; And Receiving and outputting a response to the test data from the test target optical transmission device; Network management test method comprising a. The method of claim 6, The test data transmission step, All the test items included in the batch test data are sequentially transmitted, and the test items included in the single function test data are designated in the test range for each test item and transmitted according to a transfer command of the tester. Way. The method of claim 6, Receiving and outputting an incident report generated by the test target optical transmission device; Network management test method further comprising a.

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