KR20020000347A - State Management Method of Subscriber Board in ATM Switching System - Google Patents

Abstract

PURPOSE: A method for managing the status of subscriber boards in an ATM exchange is provided to prevent the loads of an OMP(Operation and Maintenance Processor) and an MCP(Master call and connection Control Processor) by setting one of the subscriber boards as a master subscriber board and commonly announcing information on the master subscriber board to the other subscriber boards. CONSTITUTION: An IMTF(Interface module status Management Test Function) block judges whether a subscriber board to appoint as a master subscriber board is a subscriber board that exists in the system(S11). In case that the subscriber board to appoint as a master subscriber board exists in the system, the IMTF block judges whether the subscriber board is in a normal state(S12). If it is confirmed that the subscriber board is normal, the IMTF block transmits a master subscriber board setup request signal to the subscriber board(S13). The IMTF block judges whether a setup acknowledge signal is received from the subscriber board(S14). If the setup acknowledge signal is received, the IMTF block modifies its internal information(S15). If the internal information of the IMTF block is modified, the IMTF transmits the location information of the master subscriber board to the other subscriber boards(S16).

Description

State Management Method of Subscriber Board in ATM Switching System

The present invention relates to a method of managing a subscriber board state in an ATM switch, and more particularly, to a method of managing a subscriber board state in an ATM switch which enables the state of a subscriber board to be managed by master subscriber board setting and notification.

In general, the state management of the subscriber board is performed by an operation management processor (OPM) and a master call and connection control processor (MCP), which are state management processors. These processors are equipped with an interface module status management and test function (IMTF) block, which is a subscriber board status management software block. The IMTF block periodically checks whether the subscriber board is operating normally through IPC (Inter Processor Communication) communication with the subscriber board. Check and test to keep the status of the subscriber board normal.

As shown in FIG. 1, the subscriber boards 11-1 to 11-8 are mounted on one shelf 20 in units of eight slots. Conventionally, when one subscriber board 11-1 has a failure such as a power-off or hernia, the remaining seven subscriber boards that operate normally are 11-2 to 11-8 subscriber boards that have failed. The information on (11-1) was transmitted to the IMTF block 10 through the IPCs 12-2 to 12-8, and in the IMTF block 10, all received through the IPCs 12-2 to 12-8. Processing of the information was performed.

The conventional subscriber board state management method has the following problems. That is, when one subscriber board 11-1 fails, all the remaining subscriber boards 11-2 to 11-8 transmit the same failure information through the IPCs 12-2 to 12-8. Since the IMTF block 10 performs the processing on the information received through the IPCs 12-2 to 12-8, there is a problem in that an unnecessary load is increased on the OMP and the MCP.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to set one of the subscriber boards as a master subscriber board and to inform the subscriber board of information about the master subscriber board, so that in the event of a failure, the remaining subscriber board is the master subscriber. It provides the board with information about the failed slot, and only the master subscriber board receiving the information transmits the information to the IMTF block through the IPC, and the IMTF block processes only the information received through the IPC from the master subscriber board. In order to prevent unnecessary loads on OMP and MCP.

1 is a block diagram showing a conventional subscriber board state management method

2 is a flowchart illustrating a method for setting a master subscriber board according to the present invention.

3 is a flowchart illustrating a method of notifying master subscriber board information according to the present invention;

Figure 4 is a block diagram showing a subscriber board state management method according to the present invention.

* Explanation of symbols for the main parts of the drawings

30: IMTF (Interface Module status Management and Test Function)

31-1: Failure Subscriber Board

31-8: Master Subscriber Board

32-8: IPC (Inter Processor Communication) by Master Subscriber Board

A feature of the present invention for solving the above object is the process of the subscriber board state management software block setting the master subscriber board among the subscriber board; Transmitting, by the subscriber board state management software block, a signal for notifying information about the master subscriber board to other subscriber boards other than the master subscriber board; Transmitting, by the other subscriber board, the failure information to a master subscriber board when a failure occurs in the subscriber board; Receiving, by the master subscriber board, information about a failure transmitted from another subscriber board and transmitting the failure information to a subscriber board state management software block by IPC; The subscriber board state management software block comprises processing the failure information received by the IPC from the master subscriber board, to provide a subscriber board state management method in an ATM switch.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention consists of a process of setting up a master subscriber board and a process of notifying information about the master subscriber board.

A process of configuring one of the subscriber boards as the master subscriber board will be described with reference to FIG. 2.

When the software block is activated, the IMTF block performs IPC with the subscriber board to transmit the master subscriber board setup request to the subscriber board where IPC is normally performed, and sets the master subscriber board by transmitting the master subscriber board setup response signal from the subscriber board. .

In detail, first, it is determined whether the subscriber board to be set as the master subscriber board is a subscriber board existing in the system (step S11). If it is determined that the subscriber board does not exist in the system, the process of step S11 is repeated for the other subscriber board.

If the subscriber board to be set as the master subscriber board is a subscriber board existing in the system, it is then determined whether the state of the subscriber board is normal (step S12). If it is determined that the status of the subscriber board to be set as the master subscriber board is abnormal, the process of step S11 is repeated for the other subscriber board.

When it is confirmed that the state of the subscriber board to be set as the master subscriber board is normal, the master subscriber board setting request signal is transmitted from the IMTF block to the subscriber board (step S13).

In response to the master subscriber board setup request signal, it is determined whether a setup response signal is transmitted to the IMTF block from the subscriber board that has received the signal (step 14). If it is determined that the configuration response signal is not received in the IMTF block, the process of step S11 is repeated for the other subscriber board.

When it is confirmed that the setting response signal from the subscriber board is received in the IMTF block, the internal information of the IMTF block is changed (step S15). The internal information to be changed is the location information of the master subscriber board including the slot number in which the subscriber board set as the master subscriber board is mounted by transmitting the configuration response signal to the IMTF block. If the internal information of the IMTF block is changed as described above, the master subscriber board setting process is terminated.

When the master subscriber board setting is completed and the internal information of the IMTF block is changed, the position information on which the master subscriber board is mounted is transmitted to the remaining subscriber boards so as to know the position of the master subscriber board (step S16). The master subscriber board notification process will be described in detail with reference to FIG. 3.

It is determined whether or not the master subscriber board is set before transmitting the positional information about the master subscriber board (step S21). If it is determined that the master subscriber board has not been set, the process from step S11 to step S15 is repeated to reset the master subscriber board (step S25), and the process of step S21 is repeated.

When it is confirmed that the master subscriber board has been set, it is determined whether or not the status of the remaining subscriber boards to which the master subscriber board information is known is normal (step S22).

When it is confirmed that the status of the subscriber board to be informed of the master subscriber board is normal, the IMTF block transmits a signal for notifying location information about the master subscriber board to each subscriber board whose status is confirmed to be normal (step S23). . However, for the subscriber board confirmed to be abnormal, the master subscriber board notification process is no longer applied.

When the subscriber board receives the master subscriber board information notification signal and confirms the position of the master subscriber board, each subscriber board transmits a master subscriber board setup response signal to the IMTF block, and when the IMTF block receives the setup response signal, (Step S24) The master subscriber board notification process ends.

4 illustrates a state management method of the subscriber board when both the setting and the notification process of the master subscriber board are completed.

If any one of the subscriber boards 31-1 has a failure such as power-off and hernia, the remaining subscriber boards 31-2 to 31-7, except for the failed subscriber board, master the failure information. The master subscriber board 31-8 receiving the fault information from the subscriber boards 31-2 to 31-7 and transmitting the collected information to the IMTF block 30 is transferred to the board 31-8. -8). OMP and MCP embedded in the IMTF block 30 receiving the failure information IPC transmission 32-8 from the master subscriber board 31-8 processes the received IPC 32-8.

As described above, one of the eight subscriber boards mounted on one shelf according to the present invention is set as the master subscriber board, and the location information about the corresponding master subscriber board is transmitted to the remaining subscriber boards, thereby causing failure of the subscriber board. The subscriber board does not transmit fault information directly to the IMTF block when it occurs, but once the fault information is transmitted to the master subscriber board and the master subscriber board transmits the information collected from the subscriber board to the IMTF block, It can reduce IPC and solve the problem of increased processor load caused by multiple IPC transmission and processing.

Claims (3)

The subscriber board state management software block setting one of the subscriber boards to the master subscriber board; Transmitting, by the subscriber board state management software block, a signal for notifying information about the master subscriber board to other subscriber boards other than the master subscriber board; Transmitting, by the other subscriber board, failure information to a master subscriber board when a failure occurs in the subscriber board; Receiving, by the master subscriber board, the failure information transmitted from another subscriber board, and transmitting IPC failure information to the subscriber board state management software block; And the subscriber board state management software block processes the failure information received from the master subscriber board by the IPC. The method of claim 1, The process of configuring the master subscriber board among the subscriber boards by the state management software block of the subscriber board includes transmitting a master subscriber board configuration request signal to the subscriber board to which the state management software block of the subscriber board is to be set as the master subscriber board. Wow; Transmitting, by the subscriber board receiving the master subscriber board configuration request signal, a configuration response signal to the subscriber board state management software block; And storing, by the subscriber board state management software block, information on the position (number) of the slot in which the subscriber board that transmitted the configuration response signal is mounted. Way. The method of claim 1, The process of the subscriber board state management software block transmitting a signal for notifying the other subscriber board of the information about the master subscriber board, the subscriber board state management software block to the other subscriber board mounting slot position of the master subscriber board (number Transmitting a signal announcing information; Receiving, by the subscriber board state management software block, a setup response signal transmitted from a subscriber board that receives a signal that announces mounting slot position (number) information of the master subscriber board. Subscriber board status management method.