KR100772178B1 - Method for links configuration and state management using shared memory - Google Patents

Abstract

A link configuration and state management method using a shared memory is provided to improve performance of an overall system by generating a shared memory and a link information table, adding and deleting a link, and recovering a generated failure. When a system starts, a link information table and a shared memory are generated and initialized(S01). A file regarding link configuration information of the system is read(S02) and sets link configuration and state information is set in the link information table(S03). A configuration state control process enters a standby state(S04). When a link configuration addition/deletion request command is received from the system or an operator(S05), it is checked whether the command link configuration addition request command(S06). In case of the link configuration addition request command, a process for adding link configuration is performed(S07) and sets the added link configuration information in the link information table(S08). In case of the link configuration deletion request command, a process for deleting a link configuration is performed(S10). A processing result is reported to a management system or the operator(S09). When failure generation or recovery information with respect to a link is received from a management system(S11), it is checked whether the information is the failure generation information(S12). In case of the failure generation information, a failure processing is executed(S13) and failure generation information is set in the link information table(S14). The failure generation information and the processing result are reported to the management system(S15).

Description

Method for links configuration and state management using shared memory}

1 is a basic configuration diagram of a routing processor according to an embodiment of the present invention;

2 is a flowchart illustrating a link configuration and a state management method according to an embodiment of the present invention;

3 is a configuration diagram of a link information table according to an embodiment of the present invention;

4 is a flowchart illustrating a procedure of determining a link configuration and a state and processing a command with reference to a shared memory according to an embodiment of the present invention;

5 is a flowchart illustrating a configuration of a link and an operation procedure of a state search function according to an embodiment of the present invention.

The present invention relates to a link configuration and state management method. In particular, link configuration state management using a shared memory that can access and use link configuration and state information quickly and easily, such as each process accesses its internal memory. It is about a method.

In general, a passive optical network (PON) IP access router is equipped with commercial routing protocols and operates in a distributed structure with several processes such as configuration management, fault management, performance management, security management, and billing management for system operation management. These processes can be further refined or integrated as needed. In order to check the link configuration and status in a state in which the distributed processes are configured, conventionally, a check request message is sent to a specific process managing a link and a result message is received and confirmed, or a link is mounted by mounting a database. It has been used to check the status by sharing the status.

The former method of sending and receiving a link configuration status request message is a message communication between a specific process that manages link configuration and status and a process to be verified, and has a disadvantage in that reception of a message on a result of a confirmation may be delayed or lost. The method of sharing the link configuration and state by mounting the database has problems such as main memory waste and increased CPU load due to the database.

An object of the present invention for solving the above problems is to provide a link configuration and state management method using a shared memory that can quickly and easily access the link configuration and state information, such as data access in each process. have.

In order to achieve the object of the present invention as described above, the link configuration and state management method using the shared memory of the present invention is a link configuration and state management method using a shared memory in a system operating in a distributed structure with a plurality of processes. A first step of generating a shared memory allocated according to the link information table and the information of the link information table; A second step of storing information on a configuration and a state of a link in the link information table; A third step of updating the link information table according to the changed information when there is a configuration change of the link; And a fourth step of updating the link information table according to the changed information when there is a state change of the link.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

1 is a view showing a schematic configuration of a routing processor according to an embodiment of the present invention. Referring to FIG. 1, a configuration state control process 110 for controlling the configuration and state of a link, other processes 120-1 to 120-n, and a shared memory 100 are provided.

The configuration state control process 110 performs a function of managing the link configuration and state in the shared memory 100. That is, the shared memory 100 is generated and initialized, the link configuration information is stored in the shared memory 100, and the information on the link configuration change or the link state change is managed on the shared memory 100. At this time, the link information table may be generated to manage the configuration and state of the link. The link information table will be described in more detail below. The other processes 120-1 to 120-n may access the shared memory 100 to determine the link configuration and state and perform command processing at the time of command processing according to a system or operator's request using the present invention. It refers to the existing configuration management, failure management, performance management, security management, billing management process, and the like.

In a general case, although a unique reference area is allocated on a memory so that processes cannot access reference areas such as other processes, in this embodiment, the link configuration and state required by each process using the shared memory 100 are required. Make information accessible. By using this method, the general memory can be used to send and receive information on the link, or the database can be used to reduce the waste of time and resources to access the information through the database manager. The risk of error in information transmission can be lowered.

2 shows a flow in which the configuration state control process 110 according to an embodiment of the present invention performs a function of creating a shared memory and managing link configuration and state in the shared memory. Referring to FIG. 2, first, a link information table (ConfStsTable) and a shared memory 100 allocated according to the information of the link information table are generated and initialized at system startup (S01). Then, the file related to the link configuration information in the system is read (S02), and the link configuration and state information is set in the link information table (S03). The link information table will be described with reference to FIG. 3.

3 is a diagram illustrating a configuration of a link information table 300 according to an embodiment of the present invention. Referring to FIG. 3, the link information table 300 is a table for managing the configuration and state of a link. The link information table 300 includes a link number field 310, a mounting information field 320, and a link state information field 330. It is configured by.

'If_no' in the link number field 310 indicates a serial number for distinguishing links in the system. 'If_no' has an integer value (INTEGER) or a natural value.

'Eq_info' of the mounting information field 320 indicates a state (mounted: EQ) or a state not mounted (NOEQ) that is actually mounted in the system for service purposes in a router or the like. For example, the unmounted state indicates a case in which a connection is made to a link connecting terminal such as a device for a link but does not operate as a real link.

'Lk_sts' in the link status information field 330 indicates a failure state of a link. If a specific link is mounted (EQ), the link operates normally without failure (NORM) or a failure state of the link ( ABNORM). On the contrary, when a specific link is NOEQ, the failure status information of the link status information field 330 is meaningless.

Referring back to FIG. 2, after the generation of the link information table 300 (S03), the configuration state control process 110 enters the standby state (S04). When receiving the link configuration add / delete request command from the system or the operator of the present invention in the standby state (S05), it is checked whether or not the link configuration add request command (S06).

If the link configuration addition request command is performed, processing for link configuration addition is performed (S07), and link configuration information added to the link information table 300 is set (S08). The process of adding the link configuration means, for example, activating corresponding information of an interface driver so that the link can be used. In addition, the link configuration information is set in the link information table 300 by setting the 'eq_info' item in the information on the link to 'EQ'.

If the result of the check in step S06 is a link configuration deletion request command, a process for deleting a link configuration is performed (S10), and information about the corresponding link is deleted from the link information table 300 (S08). The process of deleting the link configuration means, for example, deactivating corresponding information of an interface driver so that the link cannot be used. In addition, deletion of link configuration information in the link information table 300 is performed by setting the 'eq_info' item in the information on the link to 'NOEQ'. Thereafter, the processing result according to the addition or deletion of the link configuration is reported to the management system or the operator of the present invention (S09), and then the process returns to the standby state of the step (S04).

When receiving the failure occurrence or recovery information on the link from the management system or the like in the standby state of the step (S04) (S11), it is checked whether the failure occurrence information (S12). If the result of the check in step S12 is failure occurrence information, failure occurrence processing is executed (S13), and the failure occurrence information is set in the link information table 300 (S14). The failure processing may be, for example, an indication of a corresponding failure link, a notification of a failure occurrence to a management system or an operator, or the like, and prohibiting access to the corresponding link. In addition, the failure occurrence information setting in the link information table 300 is performed by setting the 'lk_sts' item to 'ABNORM' among information on the corresponding link in which the failure occurs. Thereafter, the failure occurrence information and the processing result are reported to the management system or the like (S15), and the standby state of the step S04 is entered.

On the other hand, if the result of the check in the step S12 is the failure recovery information, a failure recovery process is executed (S15), and the failure recovery information is set in the link information table (S14). The failure recovery processing may be, for example, deleting an indication of a failed link, notifying the management system or the like of the failure recovery, allowing access to the corresponding link, or the like. In addition, the failure recovery information is set in the link information table 300 by setting the 'lk_sts' item to 'NORM' among information on the corresponding link in which the failure is restored. After that, the failure recovery and processing result is reported to the management system or the like (S15), and the standby state of the step S04 is entered.

4 is a diagram illustrating a flow of determining and configuring a link configuration and state with reference to a shared memory when the other processes 120-1 to 120-n perform command processing according to an embodiment of the present invention. . Referring to FIG. 4, first, according to the method for managing link configuration and state of the present invention, when the system is started, each of the other processes 120-1 to 120-n is generated by the configuration state control process 110. After opening one link information table 300 (S21) and connecting its process to the link information table (S22), it enters a waiting state for receiving a command processing request (S23).

When the command processing request for a specific link is received from the management system or the operator in the standby state (S24), the link configuration and state search function (GetConfSts) is called with the link number (if_no) entered in the command as a parameter. (S25), it is checked whether the result of the called function is 'OK' for the link (S26). If the result of the configuration and status search function of the link is 'OK', the command processing for the link is executed, and a message about the status of the link (OK) and the command processing result are transmitted to the management system or the operator. After outputting the message (S27), the process enters the standby state of step S23.

On the other hand, if the result of the link configuration and status search function in step S26 is not 'OK', a process set to be performed when the link is not normal is performed. After outputting a message NOK indicating that the configuration or state of the link is not normal and a processing result message according to the link state (S28), the system enters the standby state of step S23. The configuration of the link and the operation of the state search function will be described with reference to FIG. 5 below.

FIG. 5 is a flowchart illustrating a configuration of a link and an operation sequence of a status search function GetConfSts according to an embodiment of the present invention. The shared memory 100 is executed when other processes 120-1 to 120-n perform instruction processing. ) To determine link configuration and status. Referring to FIG. 5, when a configuration and status search function of the link is called with a specific link number (if-no) as a parameter, information of a link information table corresponding to the link number (if_no) is retrieved (S31). ).

After checking whether the link information (eq_info) of the link is implemented (EQ) (S32), and if the corresponding link configuration is implemented (EQ), it is checked whether the link status information (lk_sts) is normal (NORM) (S33). If the link state information is normal, 'OK' is output (S34). If the link state information is not normal, 'LK_ABNORM' is output (S36). On the other hand, if the link configuration information is not implemented in step S32, 'NOEQ' is output (S35).

So far I looked at the center of the preferred embodiment of the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

In the link configuration and state management method using the shared memory of the present invention as described above, a process for referencing the link information by generating the shared memory and the link information table, adding and deleting the link configuration, generating a failure, and recovering the link is performed. You can access and use that information quickly and easily, which can improve the performance of your entire system.

Claims (12)

In the link configuration and state management method using a shared memory in a system operating in a distributed structure of a plurality of processes, A first step of generating a shared memory allocated according to the link information table and the information of the link information table; A second step of storing information on a configuration and a state of a link in the link information table; A third step of updating the link information table according to the changed information when there is a configuration change of the link; And And a fourth step of updating the link information table according to the changed information when there is a link state change. The method of claim 1, wherein the link information table generated in the first step is A link configuration using a shared memory comprising a link number field indicating an index for each link, a mounting information field indicating whether a corresponding link is installed in the system, and a link status information field indicating a link status; State management method. The method of claim 2, wherein in the third step When the configuration change of the link is the addition of a new link configuration, the update of the link information table is performed. And a method of changing the information of the mounting information field among the information about the added link in the link information table to a value indicating a state in which the corresponding link is actually mounted. The method of claim 3, wherein the third step If the configuration change of the link is the addition of a new link configuration, the link configuration and state management method using a shared memory further comprising the step of activating the corresponding information of the interface driver to use the link. The method of claim 2, wherein in the third step When the configuration change of the link is deletion of a new link configuration, the update of the link information table is performed. Link configuration and state management method using a shared memory, characterized in that for changing the information of the mounting information field of the information on the deleted link in the link information table to a value indicating that the link is not actually mounted; . The method of claim 5, wherein the third step If the configuration change of the link is a deletion of a new link configuration, further comprising deactivating corresponding information of an interface driver so that the link cannot be used. The method of claim 2, wherein the fourth step If the state change of the link is a failure of a link configuration stored in the shared memory, performing the step of performing one or more of the indication of the failed link, the notification of the failure, and the prohibition of access to the link. Link configuration and state management method using a shared memory comprising a. 8. The method of claim 7, wherein the updating in the fourth step is And a link status information field of the link information table is changed to a value relating to a failure state. The method of claim 7, wherein the fourth step is If the state change of the link is recovery for the failure, the method further includes performing one or more operations of releasing the indication of the failed link, notifying of the failure recovery, and allowing access to the link. Link configuration and state management method using a shared memory, characterized in that. The method of claim 9, wherein the updating in the fourth step is And changing a value of a link state information field of the link information table to a value related to a normal operation state. The method of claim 1, And a fifth step of the process of retrieving information of the link information table by using a link configuration and state search function and outputting a corresponding search result. The method of claim 11, And a sixth step in which the process outputs a command processing result of a specific process with reference to the output information in the fifth step.

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