JP3204302B2 - Network element management system and database updating method therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DB updating method, and more particularly to a DB updating method in a dual monitoring and control system for changing and setting the setting conditions of a NE (Network Element) used in an exchange or the like of a network system. Method and DB update system.

[0002]

2. Description of the Related Art As a DB (Data Base) updating method in a conventional dual monitoring and control system, an HMI (Human M
A method of simultaneously writing (updating) the DB of the agent to be duplicated from a manager as an achin interface) is adopted.

In this case, when the manager instructs to change the setting of the NE (network element) of the network line, for example, according to the DB of the duplicated agent, for example, the data speed of the line is 64 kbps and the number of lines is 128 kbps. , 192 kbps, the line frame format, the CRC check, and the error correction method. Therefore, when managing and processing communication and management conditions of a public line or a PBX (private branch exchange) line,
It is important to unify the DB , and for this reason, the network is redundantly configured including the NEs in a network redundant monitoring and control system.

Here, as a first conventional example, Japanese Patent Laid-Open Publication No.
A data equalization method and a computer system related to a dual monitoring and control system disclosed in Japanese Patent Publication No. 179543 will be described. This publication discloses that a plurality of calculation processing devices for processing a database are provided, at least one of the calculation processing devices is used as a normal system to execute a collection and storage process of history data, and another calculation processing device is set as a standby system. In the data equalization method for keeping the contents of the database of each processing device in the computer system to be executed equivalent, in the case of the processing device that has started up from standby or offline to the standby system, the system information of the standby system is changed from the normal processing device to the standby system. with requests the transfer to the transfer request history data, the history data transfer request when the conventional system the central processing unit sets the historical data transfer request transfers the system information, and collection storage of historical data has been completed Etc. characterized by sending history data from the database when is set The method has been shown.

Further, in the above-mentioned computer system, each of the processing units includes processing means for processing and managing history data, monitoring and controlling the state of the system, and setting means for setting a history data transfer request. A featured computer system is shown.

[0006] According to the data equalization method and the computer system, transfer history and discontinuity of the history data in the standby system do not occur, and the processing of the history data in the normal system is normally performed.

As a second conventional example, Japanese Patent Application Laid-Open No.
No. 48628 discloses an intelligent network system. This publication relates to a redundant service management system used for a redundant service management system (SMS) of an intelligent network system (IN) and a synchronous management method of a network database. The purpose of this publication is to synchronize and update each database,
It is an object of the present invention to provide an intelligent network system capable of minimizing service interruption of a service management system and improving service continuity.

[0008]

However, in the first and second conventional examples described above, the main purpose is to match the master DB and the database to be backed up.
B is updated with new data first, and then the backup DB is updated. For NEs involved in changing the setting conditions and quality of the data flow flowing through the network, for example, the DB is updated. Although the duplication is common, it has the following problems structurally and is not a reference.

Further, in the conventional DB updating method in the dual monitoring and control system, even in the active system (the regular system, the act side), the DB updating is performed in real time.
(A) NE (Network Elem) in active system agent
(b) When the real-time update of the DB by the control to (ent) and the frequent occurrence of alarms overlap, the processing of both the monitoring and control is affected, and the processing speed is degraded. (b) From the HMI to both the active / standby agent By simultaneous writing, H
Useless processing in MI occurs. (C) When an abnormal response is received from the NE during NE control, processing for restoring the written DB in the active / standby agent occurs.
(D) There is a problem in that halfway writing of the DB occurs due to a communication error between the manager and the agent during control execution, and the active DB may become abnormal.

The object of the present invention is to solve the above-mentioned various problems caused by real-time updating of the active DB in the DB updating method of the conventional dual monitoring control system. Here, of the problems of the conventional method, the focus is particularly on improving the reliability of the DB, and the purpose is protection at the time of updating the DB.

[0011]

According to the present invention, a DB updating method in a dual monitoring and control system according to the present invention manages a network composed of NEs as a DB, and a manager as an HMI and a dual agent (DB duplex). Conversion)
The monitoring control interface with the NE is configured as follows. In the system implemented by the active agent, (a) when there is an operation involving DB update, the manager first updates the DB to the standby agent. And (b) the standby agent sends the standby agent's own D to the active agent.
B: the function of notifying that B has been updated, the active agent turning on the DB update flag, (c) the function of the standby agent instructing the active agent to issue a control command to the NE, (d) A) a function in which the active agent issues a control command to the NE;
The active agent receives the response from E and notifies the standby agent of the response. (F) The standby agent receiving the response notification from the NE determines whether the response is normal / abnormal and sends the response to the manager that is the HMI. It has a function of notifying and instructing the active agent to update the DB, and (g) the active agent has a function of turning off the DB update flag in response to a DB update instruction from the standby agent.

An alarm from the NE is received by the active agent and has a function of notifying the manager of the alarm.
For the target alarm in which the DB update from the standby agent to the active agent described above is not reflected, the alarm is transferred to the standby agent only when the DB update flag is ON in the active agent.

[0013] The standby agent determines whether the alarm is to be registered, notifies the result to the active agent, and determines whether or not history collection and notification to the HMI are performed.

Further, the present invention provides the agent / DB 2
Although the basic configuration is based on a redundant configuration, when a single configuration is caused by a single system failure (only the active system agent is present), the active system agent plays the role of the standby system agent described above, so that the monitoring control is continued. Has functions.

[Operation] The DB update method in the dual monitoring and control system according to the present invention is as follows. (A) When an operation involving DB update is performed according to the specific items of the present invention, first the manager sends the DB to the standby agent. (B) standby agent notifies the active agent that its DB has been updated, and the active agent turns on the DB update flag; (c) standby agent Instructs the active agent to issue a control command to the NE,
(D) a function in which the active agent issues a control command to the NE, (e) a function in which the active agent receives a response from the NE and notifies the standby agent.
(F) The standby agent that has received the response notification from the NE determines whether the response is normal / abnormal, notifies the manager that is an HMI, and issues a DB update instruction to the active agent, and (g) the active agent. Turns off the DB update flag according to the DB update instruction from the standby agent
And provides various effects by protecting the active DB real-time update by operation.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows an example of a system configuration according to the present invention, which includes a manager 1 which is an HMI for controlling the system operation in accordance with an operation of an operator, and DB4-1 and DB4-1, which have a dual working / standby configuration. Agents 3-1 and 2-3 for writing and reading to DBs 4-1 and NE interfaces 5-1 and 5-2
And NEs 7-1 and 2 to be controlled. Here, the NE (network element) superimposes, for example, 128 kbps, by superimposing a line data rate of 64 kbps in accordance with the duplicated agents DB4-1 and DB4-1.
Or set / change to 192 kbps, set / change line frame format, set CRC check, set error correction method
It is provided for changes, etc., and performs redundant monitoring control.

FIGS. 2 and 3 describe the normal operation and the standby agent failure operation in the above configuration.

The operations in FIGS. 2 and 3 and FIGS. 4 and 5 will be described in detail in the description of the operations.

Next, the operation of the embodiment of the present invention will be described in detail with reference to the drawings. First, the normal state will be described with reference to FIGS.

First, in operation 8 for the manager 1, the manager 1 sends a control command to the standby agent 3-2 via the communication path 2 via the path 9.

The standby agent 3-2, which has received the control command from the manager 1, writes the DB to its own DB 4-2 via the path 10 and also uses the active agent 3-3 via the communication path 2. Then, a control command and a DB update notification are transmitted to the device 1.

The active agent 3-1 sets the DB update flag to ON, issues a control command 12 to the NE 7 via the communication path 6, and the NE 7
A response is notified to the standby agent 3-2 via the communication line 13 .

The standby agent 3-2 notifies the manager 1 of the received control response via the path 14. The manager 1 displays the result on a display (not shown).

The standby agent 3-2 instructs the active agent 3-1 to update the DB via the path 15. The active agent 3-1 updates the DB 4-1 and turns off the DB update flag. I do.

When an alarm occurs, an alarm is notified from the NE 7 to the active agent 3-1 via the path 16. The active agent 3-1 gives a name or the like by DB search, and sends the path to the manager 1 via the path 17. Notify via. The manager 1 displays the received alarm on a display (not shown).

It is assumed that D in the active agent 3-1 is
When an alarm is received while the B update flag is ON, an inquiry is made to the standby agent 3-2 that may be performing DB update only when there is no target of the alarm, a history is collected, and the manager 1 is notified. Determine the notification.

Alarms that have received an untargeted alarm while the DB update flag is OFF are discarded. More specifically, referring to FIG. 4, first, the manager 1 receives an operation from the operator (31),
The manager 1 transmits the standby agent 3-2 to the DB 4-2.
A write control command is sent to (32).

Next, the standby agent 3-2 is connected to the DB4
-2 is executed (33), and after the writing is completed, a control command is generated and the active agent 3-
1 is notified of a control command (34). Next, the active agent 3-1 notifies the control command to the NE 7 (35).

Next, the NE 7 generates a control response command and notifies the active agent 3-1 via the communication path 6 (36). The active agent 3-1 transmits the control response command to the communication path 2 through the communication path 2. It notifies the standby system agent 3-2 via (37). The standby agent 3-2 receives the control response command and makes the DB4-2 of the active agent 3-1 identical to the DB4-1 of the active agent 3-1.
Generates a DB update instruction, and sends D to the active agent 3-1.
B The update instruction is notified (40), and the active agent 3-
1 executes updating of the DB 4-1 (41). The standby agent 3-2 notifies the manager 1 of a control response command, and the manager 1 sends the control response command to the standby agent 3-2.
DB 4-2 and active agent 3-1 DB 4-1
Is displayed on the display.

Next, an abnormal time due to a standby agent failure will be described with particular reference to FIG. Manager 1
Has detected the failure of the standby agent 3-2, the operation 8 for the manager 1
Manager 1 is active agent 3 via communication path 2
-1 is transmitted via the path 9.

The active agent 3-1 which has received the control command from the manager 1 writes the DB into its own DB 4-1 via the path 10 and sends the control command to the NE 7 via the communication path 6. It is issued via the route 11 and receives a response from the NE 7 via the route 12.

The active agent 3-1 notifies the received control response to the manager 1 via the path 13. The manager 1 displays the result on the display.

When an alarm occurs, an alarm is notified from the NE 7 to the active agent 3-1 via the path 14. The active agent 3-1 gives a name or the like by DB search, and transmits the path 15 to the manager 1. Notify via The manager 1 displays the received alarm.

The operation when the standby agent 3-2 has a failure will be described in detail with reference to FIG. First, the operator issues an operation 8 to the manager 1 (51). The manager 1 sends the control command directly to the active agent 3-1 without passing through the failed standby agent 3-2 (52). The active agent 3-1 writes data according to the control command to the DB 4-1 (53), and after the writing is completed, notifies the NE 7 of the control command (54). The NE 7 generates a control response command, and the NE 7 generates a control response command. To the active agent 3-1 (55). Active agent 3
-1 notifies the control response command to the manager 1 which has issued the control command (56). The manager 1 receives the control response command and displays the fact on the display (57).

[0035]

By adopting the DB update method in the dual monitoring control system of the present invention, (a) in the active agent, the DB is updated only when the standby agent surely updates the DB. It suffices to update, and as in the current system, there is no need to uselessly restore the original status due to control failure after the update. (B) In the active agent, priority is given to alarm processing even when alarms occur frequently during control execution. (C) If a communication error occurs between the manager and the agent during the execution of the control from the manager as the HMI to the agent, the active DB may become abnormal in the current method. But
This method has an effect that the active DB is not affected at all.

[Brief description of the drawings]

FIG. 1 is an example of a system configuration according to the present invention.

FIG. 2 is an operation example (normal operation) at the time of executing an operation according to the present invention.

FIG. 3 is an operation example (at the time of a single system failure) at the time of executing an operation in the present invention.

FIG. 4 is an operation flow example (normal operation) at the time of operation execution in the present invention.

FIG. 5 is an example of an operation flow (at the time of a single system failure) when executing an operation according to the present invention.

[Explanation of symbols]

1 Manager (HMI) 2 Communication path between manager and agent 3-1 Active agent 3-2 Standby agent 4-1 Active DB 4-2 Standby DB 5-1 Active NE interface 5-2 Standby NE interface 6 Communication path between agent and NE 7-1, 7-2 NE 8 Operation for manager (HMI) 9 Control from manager to standby agent 10 DB writing in standby agent 11 From standby agent to active agent 12 Control command notification from active system agent to NE 13 Control command response from NE 14 Response from standby system agent to manager 15 Standby system agent DB update instruction to active system agent 16 NE to active system agent Alarm notification to agent 17 Alarm notification from active agent to manager (HMI) 32, 52 Control execution 33, 53 DB generation 34, 35, 54 Control command 36, 37, 38, 55, 56 Control response 40 DB update instruction 41 DB generation 39,57 Result display

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 12/00 G06F 11/20 G06F 13/00 H04L 12/24

Claims (6)

(57) [Claims] 1. An active system connected to a network element to be managed and having an active database, a standby system connected to the active system and having a standby database, and connected to the active system and the standby system Human
A method of updating a database in a network element management system comprising: a human interface, wherein the human-human interface transmits a control command to the standby system when an update operation is performed on the human-human interface. And when the standby system receives the control command from the human-man interface, updating the standby system database and transmitting the control command to the active system; and Transmitting the control command to the network element when receiving the control command from a standby system; and transmitting the control response to the standby system when the working system receives a control response from the network element. Step And when the standby system receives the control response from the active system, transmitting a database update instruction to the active system, and when the active system receives the database update instruction from the standby system, Updating the working database; and a database updating method. 2. The database update method according to claim 1, wherein the active system receives the control command from the standby system and then transmits the control command to the network element. Turning the update flag off after the working system updates the working system database. The database updating method according to claim 1, further comprising the steps of: 3. The database updating method according to claim 1, wherein the standby system transmits the control response to the human-man interface when receiving the control response from the active system. Displaying the result when the human-man interface receives the control response from the standby system. The database updating method, further comprising the steps of: 4. An active system connected to a network element to be managed and having an active system database, a standby system connected to the active system and having a standby system database, and connected to the active system and the standby system Human
A network interface management system comprising: a human interface, wherein the human interface includes means for transmitting a control command to the standby system when an update operation is performed on the human interface. Means for, when the standby system receives the control command from the human-man interface, updating the standby system database and transmitting the control command to an active system, wherein the active system includes the standby system. Means for transmitting the control command to the network element when receiving the control command from the network element, means for transmitting the control response to the standby system when the working system receives a control response from the network element. Wherein the standby system is the working system Means for transmitting a database update instruction to the active system when the control response is received from the system, and means for updating the active database when the active system receives the database update instruction from the standby system. A network element management system, comprising: 5. The network element management system according to claim 4, wherein the active system updates the control command after receiving the control command from the standby system and before transmitting the control command to the network element. A network element management system comprising: means for turning on a flag; and means for turning off the update flag after the working system updates the working system database. 6. The network element management system according to claim 4, wherein the standby system transmits the control response to the human-man interface when the standby system receives the control response from the active system. A network element management system, comprising: means for displaying a result when the human-man interface receives the control response from the standby system.