KR100626664B1 - Policy-Based QoS Management Server Apparatus And QoS Management Method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a policy-based quality control server device and a quality control method using the same.

2. The technical problem to be solved by the invention

The present invention provides a policy-based quality management server device for remotely setting and retrieving a quality policy for a COPS-PR (Common Open Policy Service PRovisioning) -based network device and receiving and analyzing various types of information from a quality management client device. To provide a quality control method using it.

3. Summary of the Solution of the Invention

The present invention, in the policy-based quality management server device for managing the quality policy for the Common Open Policy Service PRovisioning (COPS-PR) -based network device, receiving the quality policy from the operator, the network based on the COPS-PR Interfacing means for conveying quality information about the device to the operator; It solves the problem of the quality policy delivered through the interfacing means with the previously stored quality policy and installs the converted policy by converting it into a PIB (Policy Information Base) form suitable for the characteristics of the COPS-PR-based network device. And a COPS-PR-based policy delivery means in the form of a modification or removal command, and receives and analyzes the results and accounting information on the quality policy from the COPS-PR-based policy delivery means, and analyzes the results. Policy management means for delivery to the; And deliver the quality policy received from the policy management means to the COPS-PR based network device, and receive the result and accounting information for the quality policy from the COPS-PR based network device to the policy management means. Including the COPS-PR based policy delivery means for.

4. Important uses of the invention

The present invention is used for Internet configuration management.

Quality Management Server, Quality Management Client Device, Policy Information Based (PIB), Quality Management

Description

Policy-based QoS Management Server Apparatus And QoS Management Method}             

1 is a block diagram of an embodiment of a policy-based quality management server device according to the present invention;

2 is a flowchart illustrating a process of delivering a message by a policy server graphical user interface (GUI) to a policy manager of a policy-based quality management server device according to the present invention.

3 is a flow diagram illustrating an embodiment of a process in which a policy management manager of a policy-based quality management server device receives a policy command from a policy server graphical user interface (GUI) and transmits a message to a policy client.

4 is a flowchart illustrating a process of processing a message sent by a policy client in a common open policy service facility (COPS-PR) server of a policy based quality management server device according to the present invention.

The present invention provides a policy-based quality management server device for managing a quality policy for a network device based on Common Open Policy Service PRovisioning (COPS-PR) and delivering a quality policy to a policy-based quality management client and using the same. It relates to a quality control method.

That is, the present invention is a technology belonging to the server field of the next generation Internet configuration management for the next generation Internet quality management.

The current Internet provides only best effort, but in the next generation Internet, providing a differential quality service with a difference in quality is emerging as an important problem.
In order to provide the differential quality service, various fields should be comprehensively considered, which can be broadly divided into the following four fields.

First, provide traffic engineering functions such as queue scheduling, traffic shaping, congestion control, etc. to network devices used on the Internet. Second, create, store, retrieve, or relate quality policies to remotely control and manage these functions. These policies should be provided with a quality policy management server function that can issue installation, modification, and removal commands to the network devices required. Third, convert the commands received from the quality policy server into the form appropriate for the specific network device environment. Quality policy management client function should be provided to be included in network device or proxy server to manage. Fourth, standardized protocol and information modeling technology should be provided to safely and reliably transfer quality policy between network device and policy server. .

The present invention corresponds to the second policy management server field of the art.

Looking at the related art as follows.

The first is to manually control the quality control function in the network equipment. This is the case when the dummy terminal is directly attached to the network equipment to perform the necessary quality configuration commands through the terminal. However, this method has a problem in that related configuration information cannot be read or stored.

The second method is to control quality configuration information through software designed for a specific network device. However, this method has a problem in that it is not possible to simultaneously control the quality configuration of heterogeneous network equipment.

The third approach is not to target only one particular network device, but to set multiple devices of the same type as policy wholesalers and quality policies for wholesalers. Although this method is more scalable than the second method, there is still a problem that quality configuration management of other types of network equipment is difficult.

The present invention has been proposed to solve the above problems, remotely set and retrieve the quality policy for COPS-PR (Common Open Policy Service PRovisioning) -based network equipment, and transmits various information from the quality management client device It is an object of the present invention to provide a policy-based quality management server device and a quality control method using the same.

The present invention for achieving the above object, in the policy-based quality management server device for managing the quality policy for the network device based on the Common Open Policy Service PRovisioning (COPS-PR), receiving a quality policy from the operator, Interfacing means for delivering quality information about a COPS-PR based network device to the operator; It solves the problem of the quality policy delivered through the interfacing means with the previously stored quality policy and installs the converted policy by converting it into a PIB (Policy Information Base) form suitable for the characteristics of the COPS-PR-based network device. And a COPS-PR-based policy delivery means in the form of a modification or removal command, and receives and analyzes the results and accounting information on the quality policy from the COPS-PR-based policy delivery means, and analyzes the results. Policy management means for delivery to the; And deliver the quality policy received from the policy management means to the COPS-PR based network device, and receive the result and accounting information for the quality policy from the COPS-PR based network device to the policy management means. It characterized in that it comprises a policy delivery means based on the COPS-PR.

On the other hand, the present invention is a quality management method applied to a policy-based quality management server device, the quality policy input step of receiving a quality policy (installation, modification, removal) for the COPS-PR-based network device from the operator; Resolves a conflict with the previously stored quality policy for the quality policy and converts the converted policy into a PIB (Policy Information Base) form suitable for the characteristics of the COPS-PR-based network device in the form of an installation, modification or removal command. Quality policy delivery step of delivering to the network device based on the COPS-PR; And a quality management step of receiving and analyzing the results and accounting information on the quality policy from the COPS-PR based network device.

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That is, the present invention is to provide a service (QoS) desired by the service and network users in routers or switches that are data communication devices operating on the next generation Internet. To this end, the quality desired by the user is expressed and stored as a policy information base (PIB), which is a form of an independent policy that does not depend on the characteristics of the network equipment for each application service, and checks whether there is a conflict with the stored policy. When a specific policy is set in a required network device, it is converted into a form suitable for the required property of the device.

In addition, it transmits the converted policy in the form of installation, modification or removal command, and manages the result of executing the command and supportable quality support function and accounting information received from a specific network device.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 4.

1 is a configuration diagram of an embodiment of a policy-based quality management server device according to the present invention, the relationship between its internal components and the policy server graphical user interface (GUI) and policy-based quality management client device (hereinafter simply referred to as "policy"). Client device ").

As shown in FIG. 1, a policy based quality management server device (hereinafter, simply referred to as a "policy server device") according to the present invention is a policy server user application programming interface (API) 111. ), Policy Management Manager 112, Policy Directory Manager 114, Policy Information Base (PIB) Manager 115, Common Open Policy Service PRovisioning (COPS-PR) Server (113) ), Policy directory server 116, and PIB database server 117.

The Policy Server User API 111 allows a network quality manager to create and store or install a policy for setting a specific quality through a Policy Server Graphical User Interface (GUI), or to modify or remove a previously stored quality policy. Provides a programming interface to be provided in order to call a function.

The policy management manager 112 stores the policy delivered through the policy server user API 111 or checks whether there is no conflict with a previously stored policy, and applies the quality of service policy expressed in accordance with the syntax of the policy directory server 116. It converts to the form of PIB which is common language of policy server and client device necessary for delivery to client device. In addition, it manages the state of the currently connected policy client device to perform a function of communicating with the appropriate policy client device when installing, modifying, or removing a policy.

The COPS-PR server 113 delivers the policy information converted by the policy management manager 112 in the form of a PIB to the policy client device, or delivers the result of performing the installation, modification, and removal of the policy command and accounting information from the policy client device. Perform the role of receiving. To this end, the COPS-PR server 113 establishes a constant connection with the COPS-PR client of the policy client device and sends control messages such as a keep-alive timer even when the policy information message is not delivered. Give and take

The policy directory manager 114 is configured to invoke a function of the policy directory user agent to call a function of the interface supported by the policy directory server 116 when the policy management manager 112 wants to store, retrieve, or find a policy received from the user. Play a role.

The policy PIB manager 115 calls the interface functions of the PIB database server 117 to allow the policy management manager 112 to convert and store the policies stored in the policy directory server 116 into PIBs or to modify or remove previously stored PIBs. It serves as a user agent of the PIB database server 117.

The policy directory server 116 performs a distributed repository function used to store, retrieve, modify, and remove user quality policies. It may not be physically on the same system as the Policy Server device, and may utilize a server of an existing directory service such as X.500 or Light-weight Directory Access Protocol (LDAP).

The policy PIB database 117 is a database server capable of storing, retrieving, modifying, and removing PIBized policies, and may not exist in the same system as the policy server device.

The flow of data to be processed at the Policy Server device is largely determined by the Policy Server GUI direction (see Figure 2 below), the Policy Server device from the Policy Client device (see Figure 3 below), and the Policy Client device. Each is divided into directions to the policy server device (see FIG. 4 below).

2 is a flowchart illustrating a process of delivering a message by a policy server graphical user interface (GUI) to a policy manager of a policy-based quality management server device according to the present invention.

First, when the policy management manager 112 receives a command message from the policy server GUI (221), it analyzes the type of the received message (222,230,236,239).

As a result of the analysis, if the type of the received command message is a storage message (222), it is checked whether the same policy is already stored before storing the policy in the policy directory server 116 (223). As a result of the check, the save command is finished (224) informing the Policy Server GUI that the same policy exists. If it is determined that the same policy does not exist, it is determined whether a conflict with the existing policy occurs (225).

As a result of the determination, if there is a conflict, the policy having the highest priority is selected and stored in the policy directory server 116 (226), and the policy server GUI is notified of the completion (227). When the installation timer expires (229) by checking the installation time of the stored policy, the installation command is performed according to the procedure of FIG. 3 below.

As a result of the determination, if there is no policy conflict, the policy is stored in the policy directory server 116 (228), and the installation timer expires by checking the installation time of the stored policy (229). Follow the installation instructions.

As a result of the analysis, if the type of the received command message is installation (230), the user is confirmed through the policy server GUI whether to store in the policy directory server 116 before installing the policy (231). As a result of the check, if the user wishes to save, the process proceeds to step 223 of determining whether the same policy exists. As a result of the check, if the user wants to install immediately without saving (231), it is checked whether there is the same policy among the desired policy and the stored policy (232).

As a result of the check, if there is the same policy, the user is notified through the Policy Server GUI and the Policy Server GUI is notified of the completion of installation (233). However, if there is no identical policy, it is checked if there is a conflicting policy (234).

As a result of the check, if there is a conflict, the policy having the highest priority is selected (235), and then the following FIG. 3 is followed. If there is no policy conflict, the installation command is performed according to the procedure of FIG. 3 below.

As a result of the analysis, if the received command message type is modification (236), the existing policy to be modified among the stored policies is found (237). After modifying the policy (238), the process proceeds to step (231) of confirming to the user through the policy server GUI whether to save the policy in the policy directory server 116 before installing the modified policy.

If the result of the analysis is that the received command message type is removal (239), the stored existing policy is found (240). Then, the removal command is performed in the following order of FIG. 3.

FIG. 3 is a flowchart illustrating a process in which a policy management manager of a policy-based quality management server device receives a policy command from a policy server graphical user interface (GUI) and transmits a message to a policy client.

First, if the message type is installation (351), it is converted to policy PIB information and stored in the PIB database server 117 (352), and then generates a COPS-PR installation DEC (DECISION) message including this information (353). . In this case, the generated message is transmitted to the policy client device on which the REQ (REQUEST) is turned (354). In this case, the REQ message is a message transmitted by the policy client device at boot time to receive a policy from the policy server device.

On the other hand, if the message type to be transmitted is removal (355), the PIB database server 117 finds the relevant PIB ID (356). In operation 357, a COPS-PR removal DEC message including this information is generated. At this time, the DEC message is a message used by the policy server device to transmit a policy to the policy client device. At this time, the generated COPS-PR removal DEC message is transmitted to the policy client device having the policy to be removed (358).

If the message type does not belong anywhere, an appropriate error message is sent to the Policy Server GUI (359).

4 is a flowchart illustrating a process of processing a message sent by a policy client in a COPS-PR server of a policy-based quality management server device according to the present invention.

First, when the COPS-PR server 113 receives a message from the policy client device (461), and if the received message type is REQ (462), the relevant configuration information of the sent policy client device is stored in the PIB database server 117. It is used as information for future policy data exchange (463).

On the other hand, if the message type is RPT (REPORT) (464), the detailed type of the RPT is checked.
If the check shows that the detail type is Commit (465), then it is checked if this RPT message is a response to installation or removal (466, 468). At this time, the RPT message is a message sent by the policy client device to the policy server device to inform the result of the DEC message. Commit indicates that the DEC message is successfully performed and No Commit fails.

If the result of the check is a response to the installation (466), it informs the Policy Server GUI that the installation was successful and logs internally (467). If the result of the check is a response to the removal (468), the related policy is removed from the PIB database server 117 (469) and the related policy stored in the policy directory server 116 is subsequently removed and notified to the Policy Server GUI (470). ).

As a result of the check, if the RPT message detail type is No-Commit (472), it is checked whether the RPT message is a response to the installation or removal (473, 477).

If the result of the check is a response to the installation (473), the policy server GUI is notified that the installation has failed, and logging is internally performed (474). If the check result is a response to the removal (477), it informs the Policy Server GUI of the removal failure and logs internally (478).
The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

As described above, the present invention can remotely set a quality policy on a router or a switch which is a data communication device operating on the next-generation Internet, store or retrieve a quality policy, and check whether there is a conflict with a previously stored quality policy. There is an excellent effect to solve the crash problem.

In addition, the present invention provides quality management in the next generation Internet by providing the functions that must be implemented in the quality policy server necessary for receiving and analyzing the results and accounting information from the quality policy client that the quality policy is properly set up. It is possible to provide quality control services with reliability, efficiency, and safety remotely, regardless of the type, so that the technical and economic effects of quality management of the next generation Internet, the effect of quick creation and modification of user service, and ultimately the satisfaction of service user satisfaction There is an excellent effect that can be expected.

Claims (5)

delete In the policy-based quality management server device for managing the quality policy for the Common Open Policy Service PRovisioning (COPS-PR) -based network device, An interfacing means for receiving a quality policy from an operator and delivering quality information on the COPS-PR based network device to the operator; It solves the problem of the quality policy delivered through the interfacing means with the previously stored quality policy and installs the converted policy by converting it into a PIB (Policy Information Base) form suitable for the characteristics of the COPS-PR-based network device. And a COPS-PR-based policy delivery means in the form of a modification or removal command, and receives and analyzes the results and accounting information on the quality policy from the COPS-PR-based policy delivery means, and analyzes the results. Policy management means for delivery to the; And Delivering the quality policy received from the policy management means to the COPS-PR based network device, and receiving the result and accounting information for the quality policy from the COPS-PR based network device to the policy management means. COPS-PR based policy delivery means for Policy-based quality management server device comprising a. delete In the quality control method applied to the policy-based quality management server device, A quality policy input step of receiving a quality policy (installation, modification, or removal) for a COPS-PR based network device from an operator; Resolves a conflict with the previously stored quality policy for the quality policy and converts the converted policy into a PIB (Policy Information Base) form suitable for the characteristics of the COPS-PR-based network device in the form of an installation, modification or removal command. Quality policy delivery step of delivering to the network device based on the COPS-PR; And Quality management step of receiving and analyzing the results and accounting information on the quality policy from the COPS-PR-based network device Quality control method comprising a. delete

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