KR101075544B1 - Method and system for managing communication qualty of virtual private network - Google Patents

Abstract

The present invention relates to a system and method for VPN communication quality management.

A system for communication quality management in a VPN network according to an embodiment of the present invention includes a communication quality management device, a policy management device and a violation determination device. The communication quality management device receives the quality generation data in the form of raw data collected periodically from the VPN network, receives the SLA policy, generates statistical information of the communication quality information for each SLA policy type, and It compares SLA indexes of customers by SLA policy type and monitors them in advance, and analyzes statistical information and monitoring results of communication quality information by SLA policy type to determine whether there is a violation by policy type. The policy management device manages the SLA policy and delivers the SLA policy to the communication quality management device. The violation determination device detects the date of the last execution of the violation for each policy type and detects the violation management item to be applied to the SLA policy according to the result of comparing with the current date. According to the result of comparing the statistical information and the customer's SLA indicator, the details of the violation determination by SLA policy type are stored in the violation determination table.

SLA management system, communication quality management device, violation determination device, policy management device, SLA policy, VPN network

Description

SYSTEM AND METHOD FOR MANUFACTURING QUALITY COMMUNICATION QUALITY {METHOD AND SYSTEM FOR MANAGING COMMUNICATION QUALTY OF VIRTUAL PRIVATE Network

The present invention relates to a system and method for managing VPN communication quality, and more particularly, to a system and method for managing communication quality in a VPN network by reflecting an SLA policy in real time.

With the development of communication services, virtual private network (VPN) services that use public networks as private networks are spreading. This VPN service utilizes premium IP network (MPLS / QoS / security) and general IP network to build the information technology (IT) environment of the company, and provides security, voice, It is a total IT solution service that provides management. In order to meet the needs of customers using such services, it is necessary to establish VPN communication quality management to provide differential high quality services.

For this purpose, the VPN service provider provides a defined SLA quality management service through agreement with the customer. Here, SLA (Service Level Agreement) is an agreement regarding the service level defined by agreement with the VPN service provider and the customer, and means the minimum service level agreed in advance. SLA quality control in the VPN network can be defined as compliance with network transmission performance while the customer uses the service, and an indicator for SLA quality management can be defined as packet delay and packet loss. At this time, the packet delay is defined as the packet delay service level of the service line, and the packet loss is defined as the packet loss rate service level of the service line.

In providing such a VPN service to a customer, a VPN service provider has a problem of costly and time-consuming for efficient indicator selection or quality information according to SLA policy application. That is, as the function of the system is changed according to the change of the SLA policy, it takes much time to construct the management data, and this problem occurs in the process of processing a large amount of communication quality related data according to the changed SLA policy.

Therefore, a technology for providing a VPN service by reflecting various SLA policies in real time is required.

The technical problem to be achieved by the present invention relates to a system and method for managing communication quality in a VPN network by reflecting the SLA policy in real time.

In the method for communication quality management in a VPN network according to an aspect of the present invention for achieving the above object,

Collecting quality generation data in the form of raw data periodically from the VPN network, requesting parameters for each SLA policy type for managing the communication quality, and generating statistical information of communication quality information for each SLA policy type And comparing the statistical information of the communication quality information with the SLA index of the customer for each SLA policy type and monitoring in advance, and analyzing the statistical information of the communication quality information and the monitoring result for each SLA policy type and violating the policy type. Determining whether this has occurred.

In addition, in a system for communication quality management in a VPN network according to another aspect of the present invention,

Receive quality generation data in the form of raw data collected periodically from the VPN network, receive SLA policy, generate statistical information of the communication quality information for each SLA policy type, statistical information of the communication quality information and the Comparing and monitoring the SLA index of the customer by SLA policy type, the communication quality management device for determining whether a violation by policy type occurred by analyzing the statistical information and the monitoring result of the communication quality information for each SLA policy type, and the A policy management device for managing an SLA policy and delivering the SLA policy to the communication quality management device.

According to an embodiment of the present invention, it is possible to efficiently manage communication quality in a VPN network by reflecting and analyzing various SLA policies input by a VPN service provider in real time and providing analysis results for each SLA policy type. .

In addition, according to the embodiment of the present invention, the SLA policy can be easily added / modified / deleted according to the input of the service provider and the detailed information of the SLA policy can be controlled, thereby securing the competitiveness of communication quality.

In addition, according to an embodiment of the present invention, the service quality management and network operation management by analyzing the communication quality policy direction and appropriate quality indicators in the VPN network using the monitoring function and communication quality information for each SLA policy type, It can provide more differentiated high quality VPN service.

In addition, according to an embodiment of the present invention, by dynamically generating a table to store quality generation data in the form of raw data collected from a VPN network, it is possible to improve the performance load and search speed of the database.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a diagram schematically showing an interworking relationship between systems for managing communication quality in a VPN network by reflecting an SLA policy in real time according to an embodiment of the present invention. 2 is a schematic diagram of an SLA management system for reflecting an SLA policy in real time according to an embodiment of the present invention.

As shown in FIG. 1, the SLA management system 100 according to an embodiment of the present invention interworks with the subscription management system 200, the failure management system 300, and the performance management system 400 in real time. Reflect and manage the communication quality in the VPN network 600. That is, the SLA management system 100 receives the customer's opening information, failure information and communication quality information collected from the subscription management system 200, the failure management system 300 and the performance management system 400, respectively, VPN network Monitor and analyze the quality level to ensure communication quality at 600. In addition, the SLA management system 100 performs a violation determination and compensation processing according to the result of monitoring the quality level to manage the quality level of the SLA index of the customer contracted with the customer to improve the communication quality in the VPN network 600. Manage. The SLA index of the customer according to an embodiment of the present invention is a quality factor that is a standard of service quality assurance in the SLA contract with the customer, and is generally classified into an opening quality, a failure quality, and a communication quality index.

The VPN network 600 may be configured as a service network such as the Internet and an intranet connecting the main office 610 and the branch office 620, such as a public network as a private network.

Specifically, referring to FIG. 2, the SLA management system 100 includes an opening processing apparatus 110, a failure handling apparatus 120, a policy management apparatus 130, a monitoring apparatus 140, an interface apparatus 150, and statistics. The management device 160, the violation determination device 170 and the communication quality management device 180.

The opening processing apparatus 110 receives the opening information (for example, line information) of the subscriber from the subscription management system 200, and establishes the SLA subscriber line information using the received line information. The opening processing apparatus 110 manages the subscriber opening quality so that the service opening date concluded with the SLA subscriber can be observed.

The failure handling apparatus 120 receives the failure information from the failure management system 300 and manages the failure quality so that recovery can be performed within a contracted time when a failure of the subscriber occurs using the transmitted failure information.

The policy management apparatus 130 manages the SLA policy regarding the SLA index, the collection management item, the quality assurance level of the customer, the violation determination criteria, and the like, and stores the SLA policy in the SLA policy table.

The monitoring device 140 manages the quality level for the SLA indicator contracted with the customer. In addition, the monitoring device 140 notifies the service provider of the history of the management result of the quality level for the SLA index in real time.

The interface device 150 provides the customer with easy and convenient quality level information and contract information in the VPN network 600 collected by the SLA management system 100 through a web interface. In addition, the interface device 150 stores data by interworking with the policy management device 130 the contents of the "new", "change" and "delete" for the SLA new policy or the existing SLA policy input by the service provider. Change / Delete

The statistical management device 160 periodically processes the customer's opening information, failure information, and communication quality information collected from the subscription management system 200, the failure management system 300, and the performance management system 400. Provide quality level data by month / region / customer.

The violation determination apparatus 170 receives the result of determining whether the statistical information of the communication quality information violates the SLA index of the customer from the communication quality management apparatus 180 and stores the result in the violation determination table, and stores the violation determination based on the violation determination table. To perform. At this time, the violation determination table stores information such as the date of last violation determination and violation management items. The violation management item according to the embodiment of the present invention stores and stores a violation determination for SLA policy types classified into five categories. For example, when the SLA policy type according to the violation management item is A, the violation determination apparatus 170 performs a violation determination function for a line that violates the SLA index in communication quality information calculated for one day during the collection period. In the same way, the violation determination apparatus 170 is a collection period 1 day to the current date when the SLA policy type according to the violation management item is B, for a month if the SLA policy type is C, if the SLA policy type is D Violation judgment function is performed on the line that violated SLA index by a predetermined number of times (2-3 times) based on the communication quality information calculated every hour on the basis of daily, and newly defined violation management item when SLA policy type is E In accordance with the violation determination function.

The communication quality management apparatus 180 includes a raw data processor 181 and an hourly statistical data processor 182. The raw data processing unit 181 receives and manages quality generation data in the form of raw data collected from the VPN network 600 periodically in the performance management system 400, and generates and delivers a table. The generated quality generation data. Here, the quality generation data are performance information and traffic information collected from the VPN network 600, for example, packet loss of the customer line, measurement values for packet delay, line information, bandwidth information, collection time, presence or absence of circuit failure, utilization rate. Etc. are included. In addition, the hourly statistical data processing unit 182 generates communication quality information using the quality generation data. That is, the communication quality management device 180 receives the quality generation data transmitted in the form of raw data from the performance management system 400. In addition, the hourly statistical data processing unit 182 periodically generates communication quality information by using the quality generation data delivered in the form of raw data, and calculates an average value of the communication quality information according to the SLA policy type every hour. Statistical information of the communication quality information is calculated.

Referring back to FIG. 1, the subscription management system 200 manages subscriber information and line information using the VPN network 600, and transmits subscriber line information to the SLA management system 100 when an event occurs.

The failure management system 300 manages failure information generated in the VPN network 600, for example, network automatic detection failure information and reported failure information. In addition, the failure management system 300 transmits the failure information generated in the SLA management system 100.

The performance management system 400 periodically collects and manages communication quality information of the VPN network 600. In addition, the performance management system 400 periodically provides communication quality information collected by the VPN network 600 at the request of the SLA management system 100.

3 is a flowchart illustrating a method of managing quality generation data in a communication quality management apparatus of an SLA management system according to an embodiment of the present invention.

As shown in FIG. 3, the communication quality management apparatus 180 of the SLA management system 100 according to an embodiment of the present invention generates the quality delivered from the performance management system 400 in the form of raw data. Receive data (S300). The communication quality management apparatus 180 determines whether a table name of quality generation data according to a collection time is stored in a database (not shown) (S310).

If there is a table according to the collection time, the communication quality management device 180 stores the quality generation data delivered in the form of raw data (Raw Data) in the table (S320). On the other hand, if there is no table according to the collection time, the communication quality management device 180 notifies the service provider of the presence of abnormality in real time and generates a table to store the quality generation data. In this case, the table name may be generated as, for example, table name_indicator_year month (S330). The communication quality management apparatus 180 determines whether a message for ending collection of quality generation data has been transmitted from the outside (S340).

When the message for ending the collection of the quality generation data is delivered, the communication quality management device 180 ends the generation of communication quality information. If the message for ending the collection of the quality generation data is not delivered, the communication quality management device 180 approaches the performance management system 400 and collects the quality generation data to perform step S300.

4 is a diagram illustrating a procedure for statistically processing communication quality information for each SLA policy in a communication quality management apparatus of an SLA management system according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the communication quality management apparatus 180 of the SLA management system 100 according to an exemplary embodiment of the present invention has statistics of communication quality information every hour for each SLA policy type set in the policy management apparatus 130. Time monitoring is performed to calculate information (S400). In addition, the communication quality management apparatus 180 dynamically generates a table every month to store quality generation data in a part of processing statistical information of communication quality information. The communication quality management apparatus 180 checks whether the "table name_indicator_year month date table" of the month of the current year exists at 12:00 am on the first day of every month (S401). If the table does not exist, the communication quality management device 180 generates a table of the month by the name "table name_indicator_year, month" (S402). That is, the communication quality management apparatus 180 dynamically separates and stores the data based on the month of the current year according to the collection time of the quality generation data collected from the performance management system 400. This is in order to reduce the performance load of the database (not shown) and to speed up the response speed when the data is generated in the case of the quality generation data, and the data inquiries in other components of the SLA management system 100.

When the table exists, the communication quality management device 180 receives the policy information for each policy type to calculate statistical information of the communication quality information every hour according to the SLA policy type to the policy management device 130 (S403). Here, the parameter information for each policy type includes a policy type, a line number, a collection time, a brand name, a circuit failure status, utilization rate, and bandwidth information. Then, the communication quality management device 180 calculates statistical information of the communication quality information periodically for each SLA policy type based on the quality generation data (S404). Here, the statistical information of the communication quality information may include a policy type, a line number, a collection time, a product name, a bandwidth, and an average value data. Communication quality management device 180 according to an embodiment of the present invention is the communication quality information when an exceptional situation occurs, such as a line failure or traffic utilization is not within the set range at the time when the quality generation data is collected When calculating statistical information, the relevant quality generation data can be excluded.

The communication quality management device 180 requests the SLA indicator of the customer applied for each SLA policy type to the policy management device 130 (S405). Then, the communication quality management device 180 compares the statistical information of the communication quality information and the customer's SLA index and monitors in advance whether the pre-alarm or violation alarm occurred for each SLA policy type (S406).

If the monitoring result of the pre-alarm or violation alarm, the communication quality management device 180 accumulates the pre-alarm or violation alarm history for each SLA policy type (S407). In addition, the communication quality management device 180 compares the statistical information of the communication quality information and the calculated statistical data with the SLA index information by region, customer, period, and line for each SLA policy type to determine whether a pre-alarm or violation alarm has occurred. Also analyze and store the result of the prior monitoring (S408). On the other hand, when the preliminary warning or violation warning does not occur as a result of the monitoring, the communication quality management device 180 analyzes and stores statistical data without accumulating the monitoring progress for each SLA policy type.

If the policy violation occurs, the communication quality management apparatus 180 transmits the result of analyzing statistical information of the communication quality information on the violation line to the service provider through the interface apparatus 150 (S409). In addition, the communication quality management apparatus 180 determines whether the termination message has been transmitted to the outside of generating statistical information of the communication quality information (S410).

When the message for ending the generation of the communication quality information and the statistical information of the communication quality information is transmitted, the communication quality management device 180 ends the generation of the statistical information of the communication quality information. If the end message of the generation of the communication quality information and the statistical information of the communication quality information has not been delivered, the communication quality management device 180 periodically monitors to calculate the communication quality information and performs step S400.

As such, the SLA management system 100 according to the embodiment of the present invention communicates communication quality information by region, customer, period, and circuit by SLA policy type for the entire line in which the quality generation data is collected before performing the violation determination. By analyzing and providing the statistical information of the it is possible to more efficiently manage the communication quality in the VPN network 600.

5 is a flowchart illustrating a method of managing an SLA policy in a policy management apparatus of an SLA management system according to an embodiment of the present invention.

As shown in FIG. 5, the policy management apparatus 130 of the SLA management system 100 according to an embodiment of the present invention is subject to policy violations for statistical information of communication quality information generated for each SLA policy type by a service provider. After the review and analysis is completed, the SLA policy input message such as "new", "change" and "delete" for the new SLA policy or the existing SLA policy is received from the service provider through the interface device 150 ( S500). In this case, the SLA policy input message may include a message type field, a policy management device message type name field, a quality generation data table field, a quality generation data information field, a violation determination management item table field, and a violation policy management item data field. The policy management apparatus 130 determines whether the SLA policy input message is new or changed (S510).

If the SLA policy input message is new or changed, the policy management apparatus 130 determines whether the field item of the SLA policy table is valid (S520). If the SLA policy table is valid, the policy management apparatus 130 automatically changes and reflects newly inputted or changed field information included in the SLA policy input message and stores it in the SLA policy table (S530). In addition, the policy management apparatus 130 may be set and changed according to a policy in which statistical information processing function and violation determination function of communication quality information are changed every hour using the quality generation data for the detailed information included in the SLA policy input message. Map automatically (S540). Here, it can be classified into collection management items and violation management items of the SLA policy input message, and collection management items are used to process statistical information of communication quality information periodically for each SLA policy type, and violation management items are processed for violation determination process. Is used. At this time, the collection management items can be set by line number, time, bandwidth, product coverage, line failure presence and usage rate, and the violation management items are period range (hour, year, month, day), SLA indicator and hourly indicator. The number of violations may be set. In addition, the number of violations of the SLA indicator and the hourly indicator may be classified into a threshold value for generating a preliminary warning and an SLA indicator value for generating a violation alarm.

Meanwhile, when the SLA policy input message is new or not changed, the policy management device 130 determines whether the SLA policy input message is deleted (S550). If the SLA policy input message is a deletion, the policy management device 130 deletes the content stored in the SLA policy table (S560). If the SLA policy input message is not deleted, the policy management device 130 re-requests the SLA policy input message to the service provider through the interface device 150.

6 is a flowchart showing a violation determination process for each SLA policy type in the violation determination apparatus of the SLA management system according to an embodiment of the present invention.

As shown in FIG. 6, the violation determination apparatus 170 of the SLA management system 100 according to the embodiment of the present invention detects the date when the violation determination was last performed in the violation determination table (S600). Violation determination device 170 compares the violation determination execution date and the current date (S610).

In the case of the violation determination based on calculating the data one day earlier than the current date, if the violation determination execution date is later than the current date, the violation determination apparatus 170 ends the process (S620).

On the other hand, if the violation determination execution date is earlier than the current date, the violation determination apparatus 170 detects a violation management item to be applied to the SLA policy in the violation determination table (S620). Then, the violation determination apparatus 170 reads statistical information of the communication quality information collected periodically until the date of the violation determination from a database (not shown) (S630). The violation determination apparatus 170 determines whether the statistical information of the communication quality information violates the SLA index of the customer in the range of the violation management item (S640). If the statistical information of the communication quality information violates the SLA index of the customer, the violation determination apparatus 170 stores the details of the violation determination for each SLA policy type in the violation determination table (S650). The violation determination apparatus 170 analyzes the details of the violation determination for each SLA policy type and provides a direction of applying the SLA policy to the service provider (S660). The SLA policy application direction provided to the service provider according to an embodiment of the present invention may include a daily maximum and minimum violation value, the number of violation lines, the average value of the violation lines, the average value of the entire line, the compensation amount, and the customer's name.

As such, the SLA management system 100 according to an embodiment of the present invention is to change the SLA policy unlike the prior art that was processed according to the SLA policy after stopping all processes to change the relevant function whenever the SLA policy is changed. By real-time processing automatically and providing analysis results for each SLA policy type, it is possible to provide differentiated high-quality VPN service to customers more efficiently.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a diagram schematically illustrating an interworking relationship between systems for managing communication quality in a VPN network by reflecting an SLA policy in real time according to an embodiment of the present invention.

2 is a schematic diagram of an SLA management system for reflecting an SLA policy in real time according to an embodiment of the present invention.

3 is a flowchart illustrating a method of managing quality generation data in a communication quality management apparatus of an SLA management system according to an embodiment of the present invention.

4 is a diagram illustrating a procedure of statistically processing communication quality information for each SLA policy in a communication quality management apparatus of an SLA management system according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating a method of managing an SLA policy in a policy management apparatus of an SLA management system according to an embodiment of the present invention.

6 is a flowchart showing a violation determination process for each SLA policy type in the violation determination apparatus of the SLA management system according to an embodiment of the present invention.

Claims (10)

In the method for communication quality management in a virtual private network (VPN) network, Managing a plurality of SLA policies in response to a new creation of a service level agreement (SLA) policy, a change or deletion of an SLA policy, Collecting quality generation data in the form of raw data periodically from the VPN network; Requesting a parameter for each of the plurality of SLA policies for each SLA policy type to manage the communication quality, Generating statistical information of communication quality information for each SLA policy type based on the quality generation data and the parameter; Comparing the statistical information for each SLA policy type with the SLA index of the customer for each SLA policy type and monitoring in advance; and Analyzing the statistical information and the monitoring result for each SLA policy type to determine whether a violation has occurred for each SLA policy type Communication quality management method comprising a. The method of claim 1, The pre-monitoring step, Determining whether a pre-alarm or a violation alarm has occurred for each SLA policy type; And accumulating and storing the pre-alarm or the violation alarm according to the SLA policy type when the pre-alarm or the violation alarm has occurred. The method of claim 1, Determining whether the violation for each policy type has occurred, And transmitting the result of analyzing statistical information of the communication quality information on the violation line where the violation by the policy type occurs to the service provider when the violation by the policy type occurs. The method of claim 1, Determining whether the violation for each policy type has occurred, Detecting an execution date of the violation determination last performed for the violation of each policy type; Comparing the date of the violation determination with the current date; Detecting a violation management item to be applied to the SLA policy, if the violation determination execution date is earlier than the current date; and And storing the details of the violation determination for each SLA policy type in a violation determination table according to a result of comparing the statistical information of the communication quality information and the SLA index of the customer in the range of the violation management items. Way. The method of claim 1, Generating statistical information of the communication quality information, Receiving the SLA policy input message from a service provider, When the SLA policy input message is new or changed, determining whether a field item of a table storing the SLA policy is valid; Automatically storing the newly entered or changed items included in the SLA policy input message in the SLA policy table, and Communication quality management method comprising the step of automatically mapping to meet the policy that the statistical information processing and violation determination function of the communication quality information every hour using the hourly quality generation data for the detailed information included in the SLA policy input message . In the system for communication quality management in a virtual private network (VPN) network, A policy management device for managing a plurality of SLA policies in response to a request for a new creation of a service level agreement (SLA) policy, a change or deletion of an SLA policy, and Receive quality generation data in the form of raw data collected periodically from the VPN network, generate statistical information of the communication quality information for each of the SLA policy type for the plurality of SLA policies to manage the communication quality, the SLA Communication by comparing the statistical information of each policy type and the SLA index of the customer by the SLA policy type and monitoring in advance, and analyzing the statistical information and the monitoring result for each SLA policy type to determine whether a violation has occurred for each SLA policy type. Quality control device Communication quality management system comprising a. delete The method of claim 6, Detects the date of violation determination performed last when the violation of each policy type was performed, and detects a violation management item to be applied to the SLA policy according to a result of comparing with the current date. And a violation determination device for storing the details of the violation determination for each SLA policy type in a violation determination table according to a result of comparing statistical information with the SLA index of the customer. The method of claim 6, The policy management device, When the SLA policy input message is new or changed, it is determined whether a field item of a table storing the SLA policy is valid. Newly entered or changed items included in the SLA policy input message are automatically stored in the SLA policy table. Communication quality management system, characterized in that the automatic mapping of the statistical information processing and violation determination function of the communication quality information hourly to match the policy using the hourly quality generation data for the detailed information included in the SLA policy input message . The method according to any one of claims 6, 8 and 9, An opening processing apparatus configured to receive opening information of a customer using the VPN network, establish line information of the subscriber, and manage opening information of a service concluded with the subscriber; Receiving the failure information for each subscriber, a failure processing device for managing the failure quality using the failure information, A monitoring device for notifying a service provider of communication quality information about the SLA index for each customer concluded with the subscriber, and And a statistics management device for periodically statistically processing the opening information, the failure information, and the communication quality information of the subscriber.

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