Method and system for evaluating protective performance of multiplexing section

[0036] The present invention will be further described below in conjunction with the drawings.

[0037] The implementation of the present invention is to obtain static information and dynamic operation status information related to the MSP to be evaluated in the EMS (Element Management System, network element management system) and the network element equipment managed by the EMS, and proceed according to the established MSP evaluation system. Evaluate and analyze, and then show the results of the evaluation to users (but not limited to the form of reports). Since there is no need to traverse the network topology and the configured services, the task evaluation efficiency of the present invention is high, the evaluation system and evaluation method are automatic and reasonable, and the evaluation operation does not affect network services.

[0038] The method of the present invention includes: acquiring network resource data related to the MSP from the EMS that manages the MSP to be evaluated or from the network element devices that make up the MSP, and acquiring each network element from the network element devices that make up the MSP The operating status data of the equipment; according to the pre-configured evaluation algorithm, various performance indicators of the multiplexing section are calculated using the network resource data and operating status data obtained above. After the calculation is completed, the calculated performance index values ​​can also be displayed to the user. Network resource data includes multiplex section configuration data, such as protection relationships, protection groups, APS bytes, etc.; operating status data mainly includes the status data of the device during operation, such as switching status data, K1, K2 words in multiplex section protection Any one or any combination of the operating status data of the section, the alarm data reported in the switching test and the multiplex section protection switching event data.

[0039] Among them, the EMS can be connected to the EMS that manages the MSP through the EMS adapter to obtain network resource data related to the MSP from the EMS; Obtain the network resource data related to the above-mentioned MSP to be evaluated from the meta device.

[0040] In the above method, thresholds can also be preset for each performance index, and the calculated performance index values ​​are compared with the corresponding thresholds to determine whether each performance index in the MSP belongs to normal performance. index. The evaluation system can also save the reasons for the performance indicators that do not meet the corresponding threshold requirements. Therefore, when a certain performance indicator is judged to be abnormal, it can also generate performance indicators that do not meet the corresponding threshold requirements. The reason (or the link to the file where the reason is recorded) is displayed to the user, so that the user can quickly locate the cause of the fault and solve the abnormal situation in the network in time.

[0041] In addition, you can also set thresholds and weighted scores for each performance index; after calculating each performance index value, the calculated performance index value is calculated according to the size of the corresponding threshold value. Then, the total score obtained by accumulating the scores of all the calculated performance indicators (for example, in a hundred-point system) is displayed to the user. Among them, calculating the score according to the size relationship with the corresponding preset threshold means: judging the size of each performance index value and the corresponding preset threshold value, if it is determined that the performance index value is less than or equal to the corresponding preset threshold value, then The score of the performance index is equal to the corresponding preset weighted score, that is, the score of the performance index = the weighted score; otherwise, the score of the performance index is equal to the difference between 1 and the nth power of the performance index value and the corresponding forecast Suppose the product of weighted scores is 0≤n≤1, that is, performance index score=(1-performance index value n)×weighted score value.

[0042] In addition, before acquiring network resource data and operating status data, the above method further includes: after receiving a region division command from a user that includes the identification information of the network element equipment that constitutes the MSP, first determining the components that constitute the MSP Whether all network element devices have been divided into designated areas; if it is determined that all network element devices that make up the MSP have been divided into designated areas, then follow-up network resource data and operating status data acquisition and performance index values Otherwise, no subsequent calculation will be performed. When you want to evaluate at least two MSPs at the same time, after receiving the area division command from the user that contains the identification information of the network elements that make up each MSP to be evaluated, you need to determine the composition of the MSP for each MSP to be evaluated. Whether all the network element devices of the MSP have been divided into the same designated area; if so, the subsequent network resource data and operating status data acquisition of the MSP and the calculation of the performance index value are performed; otherwise, the subsequent calculation of the MSP is not performed.

[0043] In addition, you can also set weighted scores and thresholds for each performance index in each area; after calculating the performance index values ​​of all MSPs that have been divided into the same designated area, the MSP The performance index value of the MSP is calculated according to the size relationship of the threshold value corresponding to the performance index in the area to which the MSP belongs, and then the total score obtained by accumulating the scores of all the performance indicators of the MSP and the MSP The preset weighted scores and preset thresholds corresponding to various performance indicators in the area are displayed to the user.

[0044] The intelligent evaluation and analysis system for the protection ring of the multiplex section of the communication network provided by the present invention, such as figure 1 As shown, the data acquisition device 100 and the evaluation calculation device 200 are connected. It may also include an MSP operation and data reporting device 400, a data storage device 300, a comparison display device 500, and a total score calculation device 600. The evaluation computing device 200 may include an evaluation system and threshold setting module 201 and an evaluation execution and analysis module 202.

[0045] MSP operation and data reporting device 400: The module runs on the APS (Automatic Protection Switching, automatic protection switching) protocol, which can be used to report APS setting information, K1, K2 bytes, and multiplex section ring operating status, forced switching settings and Information such as AIS (Alarm Indication Signal). The device is optional, and it can also be implemented using the original equivalent functional units on each network element device.

[0046] Data collection device 100: used to obtain network resource data of the MSP to be evaluated and to obtain and collect operating state data of the network element devices that make up the MSP to be evaluated.

[0047] The acquisition of network resource data supports the acquisition of network resource data from the configuration data or backup data on the EMS. An evaluation operation can only target the data of one EMS, or when there are multiple MSPs to be evaluated, the data of multiple EMSs can be evaluated at one time. Therefore, the MSP resource collection module can obtain configuration data or configuration data on one or more EMSs. Back up data.

[0048] The acquisition and collection of operating status data refers to the direct access to the network element equipment managed by the EMS through the access network to form the MSP to be evaluated, and the operating status data required for the evaluation are obtained from each network element equipment.

[0049] Data storage device 300: can be used to store the network resource data collected by the data collection device 100 and required for evaluation and the operating status data of each network element equipment, as well as the performance index values ​​and all performance index values ​​obtained after evaluation and calculation The total score can be saved, but not limited to, engineering files or database files for data preservation or backup and restoration.

[0050] Evaluation performance index and threshold setting module 201: used to set the evaluation algorithm required to obtain each evaluation performance index, the threshold corresponding to each performance index and/or the weighted score and threshold.

[0051] Evaluation execution and analysis module 202: including network area settings, static multiplex section ring resource evaluation and analysis, dynamic multiplex section ring resource evaluation and analysis functions, used to use the data collected by the data acquisition device 100 according to the pre-configured evaluation algorithm Calculate various performance indicators of the MSP with network resource data and operating status data to obtain various performance indicators;

[0052] The purpose of dividing areas is to facilitate the evaluation and analysis of network data. For MSP evaluation, the network elements or nodes in multiple MSPs can be divided into different areas according to whether they are backbone layer, convergence layer, access layer, or custom area, and automatic MSP evaluation can be performed by establishing evaluation tasks. Thereby, it is possible to flexibly and conveniently evaluate one or more MSPs in the communication network, and different levels of MSPs across subnets.

[0053] Static multiplex section ring resource evaluation and analysis is the execution and analysis of the evaluation task of static network resources in EMS data, including the setting of APS bytes and the evaluation and calculation of the forced switching setting ratio.

[0054] Dynamic multiplex section ring resource evaluation and analysis is the execution and analysis of the evaluation task of the dynamic operating status of the MSP in the network equipment, including the evaluation of the dynamic operating APS bytes of the network element equipment, the abnormal ratio of the operating status of the switching status, etc.

[0055] The comparison and display device 500 is used to compare the performance index values ​​calculated by the above evaluation calculation device 200 with the corresponding preset threshold values, and then display the reasons for the performance index values ​​that do not meet the requirements of the corresponding threshold values. user. The calculated performance indicators can also be displayed to the user, and can be output and displayed in the form of files, such as WORD files, XML (Extensible Markup Language, Extensible Markup Language) files, etc. The file can be output in two dimensions: the evaluation item dimension and the network element equipment dimension. Each dimension is output in three levels: network level, problem statistics, and each performance index value, and can be output through the hyperlink corresponding to each performance index value Navigate to the abnormal question table and display the scoring template for this evaluation. Among them, the scoring template refers to the threshold value and weighted value set for each performance indicator in each area, because users can set different performance indicators for the backbone layer, aggregation layer, and access layer in different areas. Threshold value and weight value, so each area can have different scoring templates.

[0056] Total score calculation device 600: used to calculate the scores of each performance index value calculated by the evaluation execution and analysis module 202 according to the size of the corresponding threshold value, and then accumulate the scores of all the calculated performance indexes The total score obtained later will be displayed to the user. The method of calculating the total score is the same as the above description, and will not be repeated here. The total score can be rated and displayed according to color, star rating, or percentile system to visually give the evaluation result and display.

[0057] Such as figure 2 As shown, the method for evaluating MSP performance includes the following steps:

[0058] Step S200: MSP operation reports network resource data and operating status data to the EMS that manages it; the evaluation system collects MSP network resource data from the EMS or directly from the network element devices that make up the MSP to be evaluated, and from the above network element devices Collect operating status data in the process;

[0059] S201: Set various performance indicators of the MSP and corresponding thresholds, weighted scores, and thresholds corresponding to each performance indicator, and an evaluation algorithm for calculating the above performance indicators;

[0060] S202: Setting an evaluation algorithm for calculating the above-mentioned performance indicators;

[0061] S203: Calculate various performance index values ​​and the total score of all performance parameter values ​​according to the evaluation algorithm set in step S202 and the network resource data and operating state data collected in step S200;

[0062] S204: Store the calculated performance index values ​​and the total score value of all performance indexes;

[0063] S205: Output and display the calculated performance index values ​​and the total score value of all the performance indexes.

[0064] Hereinafter, an application example of the present invention is used to further illustrate the above method.

[0065] Such as image 3 As shown, the methods for evaluating multiplex section protection performance include:

[0066] Step S300: The MSP runs and reports the network resource data and operating status data protected by the multiplex section to the EMS that manages it; the evaluation system collects the multiplex from the EMS or directly from the network element devices that make up the MSP to be evaluated The network resource data of the segment protection is collected from the above-mentioned network element equipment.

[0067] S310: Set the network element devices that make up the MSP to be evaluated into the area respectively, that is, in the area setting, set the multiplex section ring node to be evaluated. You can set the MSP according to the backbone layer, convergence layer or access layer. To the corresponding area;

[0068] After setting the area, you can evaluate and calculate by area. If the calculation process of a certain performance indicator will affect the business and take too long (here mainly refers to the evaluation item of switching test), you need to prompt the user To confirm whether it needs to be executed. In the evaluation calculation, it is necessary to evaluate each MSP to be evaluated one by one. When collecting network resource data from both the EMS and each network element device, it is better to use the network resource data collected from the network element device in the evaluation to avoid the network resource data configured on the EMS and the network element device. The defect of inaccurate calculation results caused by inconsistent related data.

[0069] S320: Set various performance indicators and thresholds corresponding to each performance indicator and calculate the evaluation algorithm for each performance indicator mentioned above, and can also set thresholds and weighted scores for each performance indicator;

[0070] S330: Create a multiplex section loop evaluation task, that is, select the MSP and performance index items that need to be evaluated;

[0071] S340: Check the validity of the data to be evaluated;

[0072] The specific examples of the legality check of the data to be evaluated for multiplex section protection are as follows:

[0073] Before the evaluation, a legality check is needed to ensure that all the network elements of all MSPs in the evaluation area are in the evaluation area to prevent incomplete protection. If there is an incomplete MSP, the performance parameters of the MSP will not be calculated. At the same time, count the total number of complete MSPs in the area (for subsequent calculation of the ratio of abnormal multiplex section protection data to total multiplex section data. Since incomplete MSPs do not participate in the evaluation, they are not included in the total number). For incomplete MSP, it can be displayed to the user.

[0074] For the operating status data reported by the network element equipment, count the number of rings that have not been activated by the APS configuration. If it is determined that there is a network element device in a certain MSP that has not started the APS protocol, it is considered that the MSP has not started the APS protocol, and the specific network elements that have not started the APS protocol can be listed in the final output evaluation result.

[0075] In addition, the legality check also includes checking whether the MSP is in a non-switching state before this assessment can be made. If the MSP to be evaluated is not in the no-switching state, the evaluation will not be carried out, and the final output of the evaluation result will indicate that the evaluation has not been carried out because the network is in the switching state.

[0076] S350: Determine whether the data required for the evaluation is legal. For example, determine whether the collected network resource data or operating state data conflicts. If it is legal, proceed to step S360; if it is illegal, proceed to step S351 for execution;

[0077] S351: According to the judgment result of step S350, for illegal data, prompt that the data is illegal, and go to step S320 to prompt the user to reset the evaluation performance index, etc., and continue execution;

[0078] S360: Start to perform MSP network resource assessment and operation status assessment;

[0079] The following uses two specific methods for evaluating the performance indicators of MSP as examples to illustrate the method of calculating performance indicators.

[0080] 1. The calculation method of the performance index of the protection ratio of the abnormal operation of the K1 and K2 bytes in the MSP, including:

[0081] a. Query K1 and K2 across segments (that is, query K bytes one by one according to each span of MSP), and each node must query K1 and K2 in the east and west directions. Through the overhead read command, the query is configured with MSP K1 and K2 bytes of the optical port;

[0082] b. K1, K2 abnormal judgment rule: Check whether the expected value is equal to the received value of the actual query.

[0083] c. If a node is abnormal, record the abnormality. Query and compare the K1 and K2 bytes of all network element devices in the MSP, regardless of whether any abnormality of the network element is found in the middle (the abnormality of the network element can be judged by the network element being offline, disconnected, or failed to issue a command) ;

[0084] d. Use the protection ratio of abnormal operation of K1 and K2 bytes in the formula MSP=number of abnormal operation of MSP K1 and K2 bytes/total number of MSPs to obtain the value of this performance index.

[0085] 2. An example of the evaluation method for the protection ratio of MSP protection switching inserted into the MS-AIS test is as follows:

[0086] a. Count the number of current alarms in the entire network; insert MS_AIS alarms in the east-west direction of each network element across segments, wait for a delay detection time, such as 1 minute, and count the current alarms of the entire network again, and then calculate before inserting the alarm The absolute value of the difference between the current alarm quantity of the entire network after the test reaches a delay detection time. If the absolute value of the difference threshold defaults to 2, it is normal within the absolute value range of the difference threshold. In addition, it is necessary to determine the number of current multiplex section protection switching events of this network element. If an exception occurs, enter the exception handling process for processing;

[0087] b. Delete the inserted MS-AIS alarm, then reset the APS protocol of this node, compare the absolute value of the difference between the current alarm quantity of the entire network before the insertion of MS-AIS and after a delay detection time after reset, such as the absolute value of the difference threshold The default value is 0, and it is considered normal within the absolute value range of the difference threshold. If an exception occurs, enter the exception handling process for processing;

[0088] c. If the current MSP has been tested, proceed to the next MSP test; if all MSPs in the assessment area have been tested, then perform the evaluation result statistics and performance index calculations of this evaluation item to complete this evaluation.

[0089] The abnormality judgment rule is: any detection alarm difference is greater than the absolute value of the set difference threshold, or the number of multiplex section protection switching events is not equal to the expected value, it is considered abnormal.

[0090] The exception handling process includes:

[0091] a. If an abnormality occurs, the detection of the node fails. If it is abnormal, the MS-AIS alarm will be deleted, wait for a detection delay time, and then perform an alarm difference check again. If the difference is less than or equal to the absolute difference threshold Value and the number of multiplex section protection switching time is equal to the expected value, it means that the MSP has returned to normal. At this time, record the test results, end the evaluation of the MSP, and then continue the evaluation of the next MSP; otherwise, immediately stop the execution of the evaluation task. Prompt the user to troubleshoot.

[0092] b. If the command delivery fails during the detection process, it may mean that the node is out of control and other high-risk issues, immediately stop the evaluation task execution and prompt the user to troubleshoot.

[0093] Calculation method of performance index value:

[0094] MSP switch inserts the protection ratio of MS-AIS test abnormality = MSP inserts the number of MS-AIS alarm test switch abnormalities/total number of MSPs

[0095] S370: Determine whether the execution of the evaluation task is finished, if the execution is finished, go to step S380 for execution, if the execution is not finished, go to step S371, and prompt to re-evaluate;

[0096] S371: According to the judgment result of S370, if the execution of the MSP evaluation task is not finished, prompt the user to re-evaluate, and then go to step S360 to continue the evaluation;

[0097] S380: According to the evaluation execution results of steps S360 and S370, the total score is calculated and displayed according to all the performance index values ​​evaluated by the MSP;

[0098] The calculation method of the total score is as follows:

[0099] If the performance index value the corresponding preset threshold value, then the score value of the performance index = (1 -The performance index value ^ index) × weighted score, where the index is between 0 and 1, and the default can be 0.75, which can be set through the configuration file.

[0100] S390: File output of the evaluation result.

[0101] Due to the ever-expanding scale of communication networks, as well as restrictions on the manual evaluation of network resources and operating status of the multiplex section ring protection in the communications network, the security and reliability of the multiplex section ring protection, there is currently a need for The network inspection system and method can automatically, quickly and accurately collect the network resource data of the multiplex section ring through the above system and method, and establish the evaluation performance index system by determining the evaluation standard range, for example, the evaluation system for MSP includes : The number of loops for which MSP protection is forced or locked, the protection ratio of the APS protocol configuration is not activated, MSP protection K1, K2 (K1, K2 are SDH (Synchronous Digital Hierarchy, synchronous digital hierarchy) multiplex section overhead byte ) The proportion of abnormal operation, the proportion of test abnormalities by inserting MS-AIS (Multiplex Section-Alarm Indication Signal) in MSP protection switching. Through the setting and improvement of the evaluation system, as well as the setting of evaluation rules, evaluation thresholds and thresholds, the execution of evaluation tasks and the output and analysis of evaluation results are carried out based on the above evaluation rules, evaluation thresholds and predetermined evaluation performance indicators. The evaluation results can be output in different dimensions to be displayed to users comprehensively and intuitively. For example, according to the network dimension and network element dimension output, and give the evaluation result score, visually display it, it is convenient to find the network resource bottleneck, unreasonable configuration and network security risks, and conduct daily network maintenance health checks, and The network provides a basis for comprehensive system optimization or expansion.

[0102] The present invention is an intelligent assessment system and method for resource assessment and operating status of multiplex section ring protection in a communication network. Its innovation lies in the realization of data collection and data input automation, assessment and analysis automation for the network health assessment and analysis of multiple section protection. , The early warning scoring automation, the high intelligence of the assessment result output automation, make the network assessment and analysis completely intelligent, so that the daily operation and maintenance of the network becomes a reality, and provides a solid foundation for the health of the network and the intelligent development of operation and maintenance . In terms of innovation in the evaluation of multiplex section loops of communication networks, an evaluation system and model are established according to the network structure and application of multiplex section loop protection, and performance indicators are quantified and evaluated, including network openable business volume and multiplex section ring network openable services Measure two evaluation performance indicators to provide strong support for the sustainable development of network services. Through network evaluation optimization, a set of scoring system is established on the basis of the network evaluation system to comprehensively score different networks, so that different networks can be compared, and different periods of the same network can be compared. The management of scores facilitates the understanding of different networks, which can provide a basis for formulating network maintenance, optimization or expansion plans.

[0103] Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk, or an optical disk. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Correspondingly, each module/unit in the above-mentioned embodiment can be implemented in the form of hardware or software functional module. The present invention is not limited to the combination of any specific form of hardware and software.