JPH06252985A - Backup master station hot stand-by system - Google Patents

Abstract

PURPOSE:To further shorten switching time in the case that a switching request to a backup master station is executed to a existing master station, and also, to automatically make hot standby of the backup master station. CONSTITUTION:The system is provided with a super small sized earth station network 3 of a redundant constitution consisting of N sets of existing master stations and one set of backup master station, and a network management system 2 for managing the super small sized earth station network 3. Also, this system is provided with a monitor console 1 for providing a man-machine interface, and in the case that a constitution change of an existing master station 33 is executed, program classification registration used by the existing station 33 is updated, and also, common program classification registration is updated by extracting a common program between the existing master stations 33, are reloading of the program to the backup master stations is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a monitor console, a micro earth station (VSAT) network, and a network management system, and performs switching when a request for switching to a backup master station is made to an active master station. , Backup master station hot standby system that performs automatic hot standby.

[0002]

2. Description of the Related Art A network management system for managing a very small earth station (VSAT) network has a redundant configuration (N to 1) consisting of N active master stations and one backup master station. In this network management system, when a failure occurs in the active master station in the VSAT network and the continuous operation is impaired, switching control is performed to delegate the function to the substitute master station, so-called backup master station. ing.

In such a master station, a panel which is used by the master station and in which programs executed by the CPU are common to all master stations and a program executed by the CPU on the panel are the same between the master stations. Alternatively, different panels are arranged. When the operating master station is replaced by the backup master station, the program executed by the CPU on each panel of the operating master station in order to set the backup master station to the same state as the operating master station. It is necessary to load the same program into the RAM on each panel on the backup master station.

In this method, the programs used by all the active master stations and executed by the CPU on that panel register only the program information for the panel which is common to all the active master stations in the database. Then, since the network operator loads the program into the RAM of the specific panel of the backup master station, when the backup master station hot standby request is issued, the master station management unit loads the program to the backup master station. ing.

[0005]

However, the above-mentioned conventional example relates to a panel in which only the program types for panels common to all active master stations are registered in the database, and different programs can be executed. The program type is not registered at all. Therefore, the backup master station can be switched between the operating master station and the backup master station only by previously loading only the programs known to be used by all the master stations. In this case, it is necessary to load the program used in the panel capable of executing a different program on the operating master station into the RAM on the panel in the backup master station. Therefore, the time during which communication between VSAT network terminals is interrupted becomes long.

In addition, in order to perform hot standby for the backup master station, the network administrator must execute the hot standby request command from the monitor console. That is, it is difficult to make the backup master station an automatic hot standby.

As a proposal for improvement of this kind, JP-A-63-20
The "backup master station hot standby system" disclosed in Japanese Patent No. 0242 can be mentioned. This JP-A-6
According to Japanese Patent Laid-Open No. 3-200242, when the active operating system is down, the active system and the standby operating system communicate with each other, and the standby system switching process is prioritized prior to the operating system down process. . This makes it possible to quickly switch to the standby system and eliminate the risk of disturbance.

According to the proposal of Japanese Patent Laid-Open No. 63-200242, the standby system is quickly switched to, but the switching time is not sufficiently short. Therefore, there is room for improvement with respect to the desire to further shorten the switching time.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to further shorten the switching time when a request to switch to the backup master station is made to the active master station and to automatically perform backup master station automatic switching. It aims to provide a backup master station hot standby system that enables hot standby.

[0010]

In order to achieve this object, the backup master station hot standby system of the invention as defined in claim 1 has a redundant configuration consisting of N working master stations and one backup master station. It has a micro earth station network, a network management system section that manages this micro earth station network section, and a monitor console section that provides a man-machine interface,
Change the configuration of the active master station, update the program type registration used by this active master station, and extract the common program between active master stations to update the common program type registration,
It is configured to reload the program to the backup master station.

In the backup master station hot standby system of the invention described in claim 2, the monitor console section in the configuration of claim 1 has a message display section and a command input section, and a network management system is provided.
First to register the common program type executed by the active master station
Database, a second database for registering a common program type among all active master stations, and a first modification
And a configuration management unit that updates in the second database,
The micro earth station network is equipped with a master station management section that reloads the program to the backup master station based on the common program type registered in the second database in response to a request from the configuration management section. It is configured to have a plurality of master stations that configure a station and a backup master station.

According to the backup master station hot standby system of the invention described in claim 3, a central processing unit for executing a plurality of programs in the backup master station is provided in the micro earth station network in the configuration of claim 2,
The master station management unit is provided with a storage means for loading a program in the backup master station in advance based on the common program type on the database.

[0013]

With this configuration, the backup master station hot standby system of the present invention changes the configuration of the working master station,
The program type registration used by this active master station is updated. Further, the common program between the active master stations is extracted and the common program type registration is updated. After that, the program is reloaded to the backup master station, the switching time is shortened when a request to switch to the backup master station is made to the active master station, and the backup master station is automatically hot-standby. .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a backup master station hot standby system of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an embodiment of a backup master station hot standby system of the present invention. 1, a monitor console 1, a network management system 2 provided with a man-machine interface from the monitor console 1 to monitor and control a VSAT network, and a monitor console 1 are shown.
From the VSAT network 3 provided with a man-machine interface to the operator.

The monitor console 1 is provided with a message display section 11 for displaying operation and control messages, and a command input section 12 for inputting monitoring and control commands to the network management system 2.
The network management system 2 adds or deletes the configuration of the active master station, and re-extracts the configuration,
Based on the configuration management unit 21 that updates in the first and second databases and the common program type registered in the database 24 by a request from this configuration management unit 21,
A master station management unit 22 that reloads a program to the backup master station, a database 23 that registers the common program type executed by the active master station, and a database 24 that registers the common program type among all active master stations. Is equipped with. The VSAT network 3 is provided with a plurality of master stations 30 and the backup master station 3 is included in the plurality of master stations 30.
1 and the active master station 33. All master stations 30
As shown in the backup master station 31, it has a panel 32 having a CPU.

Next, the operation of this configuration will be described. In this configuration, the operator of the VSAT network 3 executes the sending of monitoring and control commands from the monitor console 1 to the network management system 2 in order to monitor and control the VSAT network 3. The network management system 2
In response to a request from the operator of the VSAT network 3, V
Various electronic messages are transmitted to the SAT network 3, and the responses are received. The result obtained in this way is notified from the network management system 2 to the monitor console 1 and displayed on the message display unit 11.

The processing operation will be described in detail below. FIG. 2 is a flowchart showing the detailed processing procedure. 1 and 2, the operator of the VSAT network 3 requests the network management system 2 to add or delete the active master station (33) in the VSAT network 3 through the command input unit 12.

This request is received and processed by the configuration management unit 21. That is, all panels (32) used by the master station 30 to be added to or deleted from the VSAT network 3.
The program type to be executed by the CPU (not shown) is registered in the database 24 or the registered content is deleted (step (described as S in the figure) 11). After that, a common program extraction process is performed for all panels (32) of all active master stations (33) (step 12). In other words, for all the active master stations (3) to the panel (32) which may execute different programs or may execute the same program.
3) Check whether the same program is used between the two. If the same program is used, this use is recognized as a common program and the program registered in the database 23 is updated (step 13).

When the common program type before processing and the common program type after processing differ due to the request for addition or deletion of the current master station (33) this time, the master station management unit 22 is notified of the difference. (Step 14). This notification is received and processed by the master station management unit 22. That is, V
The backup master station 31 in the SAT network 3 is caused to load the hot standby program to each panel 32 in the backup master station 31 based on the program type registered in the database 23 (step 15).

In this way, the common program among all active master stations (33) in the VSAT network is already loaded in the backup master station (31). Therefore, the number of programs to be loaded is reduced no matter which active master station (33) is requested to switch the master station when the master station is switched. In addition, the time when the number of programs to be loaded becomes the same and the backup master station is in the operating state, that is, the time required to load the program to the backup master station (31) is shortened. Further, the backup master station can be automatically set to hot standby without the intervention of the operator of the VSAT network 3.

[0021]

As described above, the backup master station hot standby system of the present invention changes the configuration of the working master station and updates the program type registration used by this working master station. Further, the common program between the active master stations is extracted, the common program type registration is updated, and the program is reloaded to the backup master station.

As a result, there is an effect that the time required for switching when the request to switch to the backup master station is issued to the active master station can be further shortened. In addition, the backup master station can be automatically hot-standby.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration in an embodiment of a backup master station hot standby system of the present invention.

FIG. 2 is a flowchart showing a detailed processing procedure in the operation of the embodiment.

[Explanation of symbols]

 1 Monitor Console 2 Network Management System 3 VSAT Network 11 Message Display Section 12 Command Input Section 21 Configuration Management Section 22 Master Station Management Section 23, 24 Database

Claims (3)

[Claims] 1. A micro-earth station network having a redundant configuration consisting of N active master stations and one backup master station, a network management system section for managing the micro-earth station network section, and a man-machine interface. It has a monitor console part to provide, changes the configuration of the active master station, updates the program type registration used by this active master station, and extracts the common program between the active master stations to register the common program type. Update
Backup master station hot standby method characterized by reloading the program to the backup master station. 2. The monitor console section has a message display section and a command input section, and has a first database for registering a common program type executed by the active master station in the network management system, and between all active master stations. A second database for registering the common program type in the above, and a configuration management unit for updating the first and second databases by re-extracting the configuration change by adding or deleting the configuration of the active master station. , A master station management section that reloads a program to a backup master station based on a common program type registered in the second database in response to a request from the configuration management section. 2. The backup master station hot according to claim 1, further comprising a plurality of master stations forming an active master station and a backup master station. Standby system. 3. The micro earth station network is provided with central processing means for executing a plurality of programs in the backup master station, and the master station management unit preliminarily stores the programs in the backup master station based on the common program type in the database. 3. The backup master station hot standby system according to claim 2, further comprising storage means for loading the backup master station.