WO2017206685A1

WO2017206685A1 - Method and apparatus for updating health database of optical time domain reflectometer

Info

Publication number: WO2017206685A1
Application number: PCT/CN2017/083867
Authority: WO
Inventors: 王冰玉
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-02
Filing date: 2017-05-11
Publication date: 2017-12-07
Also published as: CN107465451A

Abstract

The present application provides a method and apparatus for updating a health database of an optical time domain reflectometer, applicable to a passive optical network connected to the optical time domain reflectometer. The method comprises: controlling, when device configuration information of the optical time domain reflectometer and/or resource configuration information of an optical network unit in the passive optical network changes, the optical time domain reflectometer to test the passive optical network, and updating a health database of the optical time domain reflectometer according to the test result. The solution of the present invention can automatically trigger updating of the health database when the device configuration information of the optical time domain reflectometer and the resource configuration information of the optical network unit change, and thus avoid the problem of resource waste caused by not updating the health database in real time and enabling unnecessary health database test.

Description

Method and device for updating health library of optical time domain reflectometer

Technical field

The present application relates to the field of optical fiber technologies, for example, to a health library update method and apparatus for an optical time domain reflectometer.

Background technique

In recent years, with the increasing number of broadband value-added services, users are increasingly demanding bandwidth. The optical fiber subscriber access network (FTTx) broadband access scheme uses passive optical network (xPON) technology, which has the characteristics of high bandwidth, anti-interference, easy expansion, and long access distance, and is widely used. However, the service guarantee problem of the FTTx broadband access system that followed has become increasingly prominent. Among them, the monitoring and fault location of massive fiber has become a difficult point. Because optical time domain reflectometry (OTDR) technology has the ability to accurately locate fiber fault points, it has been favored by operators.

The OTDR fault point precise positioning process may include: when the optical distribution network (ODN) fiber link is healthy, start the OTDR test, save the curve and event list as the OTDR health reference data; when the ODN fiber link is faulty When the OTDR test is started again, the fault test result is compared with the health library to find the difference point, so as to obtain the exact location of the fault point. It can be seen that the health library plays a role of comparison benchmark in fault location. Therefore, if the health library is inaccurate, it will directly affect the accuracy of fault location.

In addition, the traditional OTDR health database update method is manually updated or periodically updated. Manual update is not able to know in real time when manual update is involved due to human factors. Therefore, the regular update is generally used as a supplement to start the timer every other period. Time automatically updates all health libraries. However, this timing update method will cause the health library that has not changed to be updated, thus adding a lot of unnecessary operation overhead.

Summary of the invention

In order to overcome the above problems in the related art, embodiments of the present disclosure provide a health pool update method and apparatus for an optical time domain reflectometer, device configuration information of an optical time domain reflectometer, and resource configuration information of an optical network unit. Automatically trigger the update of the health library when changes occur, avoiding the inability to The new health library and the launch of unnecessary health library tests create a waste of resources.

In order to solve the above technical problem, the present disclosure adopts the following technical solutions:

According to an aspect of an embodiment of the present disclosure, a health library update method for an optical time domain reflectometer is provided for a passive optical network connected to an optical time domain reflectometer, the method comprising:

Controlling the optical time domain reflectometer to test the passive optical network when device configuration information of the optical time domain reflectometer and/or resource configuration information of the optical network unit in the passive optical network changes And updating the health library of the optical time domain reflectometer according to the test result.

In the above solution, the method further includes: periodically acquiring device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network;

Updating the health library of the optical time domain reflectometer according to the test result includes: receiving a test result file reported by the optical time domain reflectometer, and updating the health library of the optical time domain reflectometer according to the test result file.

Wherein, in the above solution, performing the testing and receiving the test result file include:

Obtaining alarm information of all ports of the optical line terminal connected to the optical time domain reflectometer when the device configuration information acquired in the current period is inconsistent with the device configuration information acquired in the previous period;

When no alarm occurs on all the ports, the optical time domain reflectometer is controlled to test the optical wiring network under all the ports according to a preset sequence, and receives the corresponding report reported by the optical time domain reflectometer. Test result files for each of the ports described.

When the resource configuration information acquired in the current period is inconsistent with the resource configuration information acquired in the previous period, the alarm information of the port to be tested of the optical line terminal is obtained, where the optical network unit corresponding to the port to be tested is in the current period. The resource configuration information is inconsistent with the resource configuration information of the previous week;

Controlling, by the optical time domain reflectometer, the optical wiring network under the port to be tested, and receiving the report that the optical time domain reflectometer reports corresponding to the to-be-tested port Test the test result file of the port.

In the above solution, the updating the health repository of the optical time domain reflectometer according to the test result file includes:

Parsing the test result file, obtaining event and curve data, and overwriting the optical time domain reflectometer Corresponding data in the health library.

According to another aspect of the embodiments of the present disclosure, there is also provided a health library updating apparatus for an optical time domain reflectometer, which is applied to a passive optical network connected with an optical time domain reflectometer, comprising:

a health library test module configured to control the optical time domain reflectometer pair when device configuration information of the optical time domain reflectometer and/or resource configuration information of the optical network unit in the passive optical network are changed The passive optical network is tested;

The health library update module is configured to update the health library of the optical time domain reflectometer according to the test result of the health library test module.

In the above solution, the device further includes an information acquiring module, configured to periodically acquire device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network;

The health library test module is further configured to receive a test result file reported by the optical time domain reflectometer;

The health library update module is configured to update the health repository of the optical time domain reflectometer according to the test result file.

Wherein, in the above solution, the health library test module includes:

The first obtaining unit is configured to acquire, when the device configuration information acquired in the current period is different from the device configuration information acquired in the previous period, the alarm information of all ports of the optical line terminal connected to the optical time domain reflectometer;

a first testing unit configured to control the optical time domain reflectometer to test the optical wiring network under all the ports in a preset order when no alarm occurs on all of the ports, and receive the A test result file corresponding to each of the ports reported by the optical time domain reflectometer.

Wherein, in the above solution, the health library test module includes:

The second obtaining unit is configured to: when the resource configuration information acquired in the current period is inconsistent with the resource configuration information acquired in the previous period, obtain the alarm information of the port to be tested of the optical line terminal, where the port corresponding to the to-be-tested port is The resource configuration information of the optical network unit in the current period is inconsistent with the resource configuration information in the previous week;

a second test unit, configured to: when the alarm to be tested does not generate an alarm, control the optical time domain reflectometer to test the optical wiring network under the port to be tested, and receive the optical time domain reflection The test result file corresponding to the port to be tested reported by the meter.

Wherein, in the above solution, the health library update module may be configured to:

The test result file is parsed, event and curve data are obtained, and corresponding data in the health library of the optical time domain reflectometer is covered.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium storing computer executable instructions arranged to perform the above method.

An embodiment of the present disclosure further provides an electronic device, including:

At least one processor;

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.

The beneficial effects of the embodiments of the present disclosure are:

The health library updating method of the optical time domain reflectometer of the embodiment of the present disclosure, by periodically acquiring device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network, thereby configuring information and / When the resource configuration information changes, the passive optical network is tested by the optical time domain reflectometer, and the health library of the optical time domain reflectometer is updated according to the test result file obtained during the test. Therefore, the embodiments of the present disclosure can automatically trigger the update of the health library when the device configuration information of the optical time domain reflectometer and the resource configuration information of the optical network unit change, thereby avoiding the inability to update the health library in real time and starting an unnecessary health library test. The problem of wasting resources.

BRIEF abstract

1 is a flow chart showing a method of updating a health library of an optical time domain reflectometer according to a first embodiment of the present disclosure;

2 is a topological structural view showing a passive optical network applied in the first embodiment of the present disclosure;

3 is a flow chart showing an embodiment of a health library update method of an optical time domain reflectometer according to a first embodiment of the present disclosure;

4 is a block diagram showing the structure of a health library updating apparatus of an optical time domain reflectometer according to a second embodiment of the present disclosure;

5 is a block diagram showing the structure of a health library updating apparatus for an optical time domain reflectometer according to a second embodiment of the present disclosure;

FIG. 6 is a block diagram showing the structure of an electronic device according to an embodiment of the present disclosure.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

First embodiment

According to an aspect of an embodiment of the present disclosure, a health library update method for an optical time domain reflectometer is provided. As shown in FIG. 1, the method includes:

Step 101: Periodically acquire device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network.

Embodiments of the present disclosure are applied to a passive optical network to which an optical time domain reflectometer is connected. The topology connection structure of the passive optical network is as shown in FIG. 2. Wherein, in the passive optical network, each passive optical network (PON) port of the optical line terminal (OLT) corresponds to a test port connected to the optical time domain reflectometer (OTDR) device, and the optical distribution is connected under the OTDR device. In the line network (ODN), the OTDR device is topologically located in the middle of the PON device and the ODN. Among them, the ODN has optical physical devices such as a splitter, an optical network unit (ONU), and a connector.

The control and operation and maintenance of the above-mentioned passive optical network are performed by the gateway device, and a health library of the OTDR is set in the gateway device, and the health library is used as a comparison reference in fault location. In the actual engineering operation and maintenance of the above passive optical network, the OTDR health database is not stable. The health database needs to be updated in the following two scenarios: On the one hand, when the ODN optical network changes normally, such as disassembling the ONU. Or, due to maintenance, the fiber is replaced and the length of the fiber is changed. The OTDR health library needs to be updated in real time. On the other hand, when the OTDR device itself changes, such as replacing the device software version or replacing the optical module. Etc. At this time, there will be some changes in the performance of the replaced OTDR device, so that the health library built on the original OTDR device is no longer applicable, and thus the OTDR health library needs to be updated.

Therefore, the embodiment of the present disclosure determines whether the update of the OTDR health database needs to be performed by periodically acquiring the device configuration information of the OTDR and the resource configuration information of the ONU. The device configuration information of the OTDR includes the software version number of the OTDR and the application registration code (SN) serial number. The resource configuration information of the ONU includes ONU ranging, ONU ID, ONU authentication value, and physical address (MAC).

Step 102: When the device configuration information and/or the resource configuration information changes, control the optical time domain reflectometer to test the passive optical network, and receive the report by the optical time domain reflectometer. Test result file.

Step 102 can be divided into the following two cases:

Case 1:

When the device configuration information is changed, the optical time domain reflectometer is controlled to test the passive optical network, and the test result file reported by the optical time domain reflectometer is received, including:

That is, the embodiment of the present disclosure acquires the device configuration information of the OTDR according to the preset period, and compares the device configuration information of the OTDR acquired in the current period with the device configuration information of the OTDR obtained in the previous period. During the current period, the device configuration information of the OTDR has changed. In this case, the health database of the OTDR needs to be updated. For example, if the software version number or SN serial number of the OTDR is changed, the OTDR device itself has changed, such as replacing the software version of the device or replacing the optical module. The health library built on the original OTDR device is no longer used. Applicable, so in this case, the ODN fiber network under all PON ports connected to the OTDR needs to be tested.

The OLT of the OLT is required to obtain an OLT connected to the OTDR after the device configuration information of the OTDR is changed. Alarm information for all PON ports and at all PONs When no alarm occurs on the port, the ODN optical network connected to all PON ports is tested by the OTDR to generate a test result file corresponding to each PON port.

In addition, the preset sequence of testing the ODN fiber network under all PON ports of the OLT may be performed according to the sequence number of each PON port, or the priority of each PON port may be preset, and the priority order is used as a test sequence.

Case 2:

When the resource configuration information is changed, the optical time domain reflectometer is controlled to test the passive optical network, and the test result file reported by the optical time domain reflectometer is received, including:

That is, the embodiment of the present disclosure acquires the resource configuration information of the ONU according to the preset period, and compares the ONU resource configuration information acquired in the current period with the ONU resource configuration information acquired in the previous period. If not, the current period is indicated. If the resource configuration information of the ONU changes, the OTDR health database needs to be updated at this time. For example, if the ONU information of a PON port is changed, such as adding or subtracting an ONU, or the ONU ranging, ID, authentication value, and MAC address are different, the optical fiber may be replaced due to disassembly and assembly of the ONU. If the length of the fiber is changed and the ODN fiber network changes, the OTDR health library needs to be updated.

When performing an OTDR test on the ODN fiber network under the PON port where the OUN resource configuration information changes, it is necessary to determine whether the PON port generates an alarm message. When no alarm is generated, the ODN fiber under the PON port is passed through the OTDR. The network performs testing to obtain a test result file corresponding to the PON port.

Step 103: Update the health library of the optical time domain reflectometer according to the test result file.

Step 103 can include:

In the passive optical network topology diagram shown in Figure 2, there are optical physical devices such as Splitter, ONU, and connector on the ODN. When the OTDR tests the ODN optical network under a certain PON port of the OLT, it controls the OTDR. Suitable test parameters (light wavelength, pulse width, test distance, refractive index, test duration, etc.) perform the test procedure. The OTDR can emit test light pulses to the fiber under the PON port. The test light pulse will be scattered and reflected by the Splitter and ONU bends or other similar devices, and some of the scattering and reflection will be returned to the OTDR, returning. The useful information is measured by the OTDR detector and identified as an event to generate a test result file.

After parsing the test result file, it will get the event list and performance indicator parameters of each event, such as event type, location, insertion loss, return loss, and reflection peak. In addition, after obtaining the analysis result of the test result file, the original data in the corresponding position in the OTDR health library has no effect, so the obtained event and curve data can directly cover the corresponding data in the OTDR health library to save storage. space.

It can be seen from the above that the implementation process of the health database update method of the time domain reflectometer of the embodiment of the present disclosure can be as shown in FIG. 3. which is:

Step 301: Obtain OTDR device configuration information periodically.

Step 302: Periodically obtain resource configuration information of ONUs under all PON ports of the OLT.

Step 303: Compare the OTDR device configuration information acquired in the current period with the device configuration information acquired in the previous period.

In step 304, it is determined whether the configuration information of the OTDR device acquired in the current period is consistent with the device configuration information obtained in the previous cycle. If yes, step 309 is performed. If not, step 305 is performed;

Step 305: Obtain alarm information of all PON ports of the OLT connected to the OTDR.

Step 306, it is determined that all the PON ports do not generate an alarm, if no alarm is generated, step 307 is performed; if an alarm is generated, step 316 is performed;

Step 307: Test an ODN optical network under all PON ports.

Step 308, generating a test result file corresponding to all PON ports, and then performing step 315;

Step 309: Compare the ONU resource configuration information acquired in the current period with the resource configuration information acquired in the previous period;

Step 310: Determine the ONU resource configuration information acquired in the current period and the resources acquired in the previous period. Whether the configuration information is consistent, if yes, go to step 316, if not, go to step 311;

Step 311: Obtain alarm information of a PON port whose ONU resource configuration information changes.

Step 312: Determine whether an alarm is generated on the PON port whose ONU resource configuration information has changed. If no alarm is generated, go to step 313. If an alarm is generated, go to step 316.

Step 313: Test the ODN optical network under the PON port where the ONU resource configuration information changes.

Step 314, generating a test result file corresponding to the PON port, and then performing step 315;

Step 315: Update the OTDR health database according to the test result file.

Step 316, the process ends.

In summary, the embodiment of the present disclosure can effectively update the health database in real time when the state of the ODN link or the OTDR device changes, by acquiring the ONU resource configuration information and the device configuration information of the OTDR, thereby avoiding the inability to update the health database in real time. The problem of waste of resources caused by starting unnecessary health library testing, and then changing the network service guarantee from manual to on-site processing to intelligent, remote processing, ensures the accurate consistency of the health library, so that when the fiber failure occurs, the fault point can be Accurate positioning, greatly improving the efficiency of troubleshooting, improving the efficiency of network service guarantee, reducing the probability of network failures, shortening the troubleshooting and recovery time, and saving a lot of manpower and material resources for network operation and maintenance.

Second embodiment

According to another aspect of the embodiments of the present disclosure, there is also provided a health library updating device for an optical time domain reflectometer, which is applied to a passive optical network connected with an optical time domain reflectometer, as shown in FIG. 4, the device 400 include:

The information acquiring module 401 is configured to periodically acquire device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network;

The health library testing module 402 is configured to control the optical time domain reflectometer to test the passive optical network when the device configuration information and/or the resource configuration information changes, and receive the light The test result file reported by the time domain reflectometer;

The health library update module 403 is configured to update the health repository of the optical time domain reflectometer according to the test result file.

As shown in FIG. 5, the health library test module 402 can include:

The first obtaining unit 4021 is configured to acquire, when the device configuration information acquired in the current period is different from the device configuration information acquired in the previous period, the alarm information of all ports of the optical line terminal connected to the optical time domain reflectometer;

The first testing unit 4022 is configured to, when a failure occurs in all the ports, control the optical time domain reflectometer to test the optical wiring network under all the ports according to a preset sequence, and receive the A test result file corresponding to each of the ports reported by the optical time domain reflectometer.

As shown in FIG. 5, the health library test module 402 can include:

The second obtaining unit 4023 is configured to: when the resource configuration information acquired in the current period is inconsistent with the resource configuration information acquired in the previous period, obtain the alarm information of the port to be tested of the optical line terminal, where the port is to be tested. The resource configuration information of the optical network unit in the current period is inconsistent with the resource configuration information of the previous week;

The second testing unit 4024 is configured to: when the alarm to be tested does not generate an alarm, control the optical time domain reflectometer to test the optical wiring network under the port to be tested, and receive the optical time domain The test result file reported by the reflectometer corresponding to the port to be tested.

The health database update module 403 can be configured to:

The health library updating device of the optical time domain reflectometer of the embodiment of the present disclosure periodically acquires device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network through the information acquiring module 401, thereby triggering health The library test module 402 tests the passive optical network through the optical time domain reflectometer when the device configuration information and/or the resource configuration information changes, and triggers the health database update module 403 to obtain the test result file obtained during the test process. Update the health library of the optical time domain reflectometer. Therefore, the health library updating device of the optical time domain reflectometer of the embodiment of the present disclosure can automatically trigger the update of the health library when the device configuration information of the optical time domain reflectometer and the resource configuration information of the optical network unit change, thereby avoiding real-time failure. Updating health libraries and launching unnecessary health library tests creates a waste of resources.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.

The embodiment of the present disclosure further provides a schematic structural diagram of an electronic device. Referring to Figure 6, the electronic device include:

At least one processor 60, which is exemplified by a processor 60 in FIG. 6; and a memory 61, may further include a communication interface 62 and a bus 63. The processor 60, the communication interface 62, and the memory 61 can complete communication with each other through the bus 63. Communication interface 62 can be used for information transfer. Processor 60 may invoke logic instructions in memory 61 to perform the methods of the above-described embodiments.

Furthermore, the logic instructions in the memory 61 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.

The memory 61 is used as a computer readable storage medium for storing software programs, computer executable programs, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 60 executes the function application and the data processing by executing the software programs, the instructions, and the modules stored in the memory 61, that is, the health library update method in the foregoing method embodiments.

The memory 61 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 61 may include a high speed random access memory, and may also include a nonvolatile memory.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. A medium that can store program code, or a transitory storage medium.

The above is an embodiment of the present disclosure, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the embodiments of the present disclosure. Retouching is also within the scope of this disclosure.

Industrial applicability

The health library updating method and device for the optical time domain reflectometer provided by the present application can automatically trigger the update of the health library when the device configuration information of the optical time domain reflectometer and the resource configuration information of the optical network unit change, thereby avoiding the inability to update in real time. The health library and the launch of unnecessary health library tests cause waste of resources.

Claims

A health library updating method for an optical time domain reflectometer is applied to a passive optical network connected with an optical time domain reflectometer; the method comprises:

Controlling the optical time domain reflectometer to test the passive optical network when device configuration information of the optical time domain reflectometer and/or resource configuration information of the optical network unit in the passive optical network changes And updating the health library of the optical time domain reflectometer according to the test result.
The method of claim 1 wherein

The method further includes: periodically acquiring device configuration information of the optical time domain reflectometer and resource configuration information of an optical network unit in the passive optical network;

Updating the health library of the optical time domain reflectometer according to the test result includes: receiving a test result file reported by the optical time domain reflectometer, and updating the health library of the optical time domain reflectometer according to the test result file.
The method of claim 2, wherein performing the testing and receiving the test result file comprises:

Obtaining alarm information of all ports of the optical line terminal connected to the optical time domain reflectometer when the device configuration information acquired in the current period is inconsistent with the device configuration information acquired in the previous period;

When no alarm occurs on all the ports, the optical time domain reflectometer is controlled to test the optical wiring network under all the ports according to a preset sequence, and receives the corresponding report reported by the optical time domain reflectometer. Test result files for each of the ports described.
The method of claim 2, wherein performing the testing and receiving the test result file comprises:

When the resource configuration information acquired in the current period is inconsistent with the resource configuration information acquired in the previous period, the alarm information of the port to be tested of the optical line terminal is obtained, where the light corresponding to the port to be tested is The resource configuration information of the network unit in the current period is inconsistent with the resource configuration information in the previous period;

Controlling, by the optical time domain reflectometer, the optical wiring network under the port to be tested, and receiving the report that the optical time domain reflectometer reports corresponding to the to-be-tested port Test the test result file of the port.
The method according to any one of claims 2 to 4, wherein the updating the health library of the optical time domain reflectometer according to the test result file comprises:

The test result file is parsed, event and curve data are obtained, and corresponding data in the health library of the optical time domain reflectometer is covered.
A health library updating device for an optical time domain reflectometer is applied to a passive optical network connected with an optical time domain reflectometer; the device comprises:

a health library test module configured to control the optical time domain reflectometer pair when device configuration information of the optical time domain reflectometer and/or resource configuration information of the optical network unit in the passive optical network are changed The passive optical network is tested;

The health library update module is configured to update the health library of the optical time domain reflectometer according to the test result of the health library test module.
The apparatus according to claim 6, wherein

The device further includes an information acquiring module configured to periodically acquire device configuration information of the optical time domain reflectometer and resource configuration information of the optical network unit in the passive optical network;

The health library test module is further configured to receive a test result file reported by the optical time domain reflectometer;

The health library update module is configured to update the health repository of the optical time domain reflectometer according to the test result file.
The apparatus of claim 7, wherein the health library test module comprises:

The first obtaining unit is configured to acquire, when the device configuration information acquired in the current period is different from the device configuration information acquired in the previous period, the alarm information of all ports of the optical line terminal connected to the optical time domain reflectometer;

a first testing unit configured to control the optical time domain reflectometer to test the optical wiring network under all the ports in a preset order when no alarm occurs on all of the ports, and receive the A test result file corresponding to each of the ports reported by the optical time domain reflectometer.
The apparatus of claim 7, wherein the health library test module comprises:

The second obtaining unit is configured to: when the resource configuration information acquired in the current period is inconsistent with the resource configuration information acquired in the previous period, obtain the alarm information of the port to be tested of the optical line terminal, where the port corresponding to the to-be-tested port is The resource configuration information of the optical network unit in the current period is inconsistent with the resource configuration information in the previous week;

a second test unit, configured to: when the alarm to be tested does not generate an alarm, control the optical time domain reflectometer to test the optical wiring network under the port to be tested, and receive the optical time domain reflection The test result file corresponding to the port to be tested reported by the meter.
The apparatus of any one of claims 7 to 9, wherein the health library update module is configured to:

The test result file is parsed, event and curve data are obtained, and corresponding data in the health library of the optical time domain reflectometer is covered.
A non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-5.