JP3443014B2 - Information communication system and network monitoring and control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention manages a plurality (n) of transmission devices (agents) forming a network by a plurality (m) of network monitoring control devices (managers), such as a ring network using an optical cable. The present invention relates to an information communication system suitable for application to the above, and more particularly to an information communication system and a network monitoring control device characterized by an exclusive control function when a plurality of network monitoring control devices operate a management object in each transmission device.

[0002]

2. Description of the Related Art In a network system in which a plurality (n) of transmission devices (hereinafter referred to as agents) that compose a ring network are managed by a plurality (m) of network monitoring control devices (hereinafter referred to as managers), The exclusive control function related to the manager's agent operation was realized as follows. That is, conventionally, each agent has a management table, and when a manager operates an agent, first, the value of the management table is acquired from the agent, and another manager is operating the agent. If it is not in operation, a request for rewriting the table is sent to the agent to be operated, and after waiting for the response, the agent is operated.

[0003]

As described above, according to the conventional technique, it is necessary to provide the management table on the agent side, and the processing for reading and setting the data in the management table according to the request from the manager side is performed. Since it is necessary, there were the following problems. That is, the manager may manage the agents of other vendors depending on the network configuration, and the management table and its read / write processing mechanism are not necessarily mounted on the agent side. Therefore, if it is not implemented on the agent side, there is a problem that exclusive control in a multiple manager environment is impossible. Further, even if the above-mentioned table and processing are installed on the agent side, there is a drawback that system resources such as memory are required.

The present invention has been made in view of the above circumstances.
In an information communication system in which a plurality of (n) agents that compose a network are managed by a plurality (m) of managers, whether or not an operation state management table for exclusive control on the agent side and its access control mechanism are installed or not It is an object of the present invention to provide an information communication system and a network monitoring control device that can realize a reliable and efficient exclusive control function only by the processing on the manager side without depending on the agent and without accessing the agent side. .

[0005]

According to the present invention, in an information communication system in which a plurality of (n) agents forming a network are managed by a plurality (m) of managers, all managers are controlled by the managers. Age
An operation state management table that holds the operation states of the managed objects that belong to the management object . The manager has a function of checking and updating the flag corresponding to the management object in the operation state management table when an operation request for the management object is generated in the manager or another manager. When the operation request occurs, if the operation flag of the request of each operation state management table is off, it is determined that the management object is not being operated, and the operation request is permitted.
If the operation flag of the request is already on, it is determined that the management object is already being operated, and the operation request is rejected.

With this configuration, when a manager needs to operate a management object managed by a certain agent in the network, an operation state management table for each management object is stored in the manager. Since it is held, it is not necessary to inquire the agent whether it is in operation. Also,
No matter which manager in the network needs to operate a managed object, refer to the operation status management table managed by the manager because the operation status management table is communicated between the managers and always synchronized. Thus, exclusive control can be realized.

With such an exclusive control function, the manager side without the access to the agent side does not depend on the implementation state of the operation state management table and the access control mechanism for exclusive control on the agent side. A reliable and efficient information communication system can be constructed only by processing.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a configuration example of a system according to the present invention. In this example, m
Agents (AG-1, AG-)
2, ... AG-m) 21-1, 21-2, ... 21-m are connected in a ring by a transmission line using, for example, an optical cable to construct a ring network. Further, in this case, the manager (MG-1, MG-) serving as a network monitoring / control device is provided for each of the agent (AG-1) 21-1 and the agent (AG-3) 21-3 in the network.
2) 11-1 and 11-2 are connected, and each manager (M
G-1, MG-2) 11-1, 11-2 are all agents (AG-1, AG-2, ... AG-) in the network.
m) 21-1, 21-2, ... 21-m shall be managed.
Therefore, In in the system of this embodiment, small
Unless the exclusive control of the manager's access right <br/> for each managed object is implemented, the managed objects (oj-1, oj-2, ... oj-n) under a certain agent in the network
22 may be operated by a plurality of managers at the same time, which may lead to an unexpected and unfavorable result of impairing normal system operation.

Therefore, in this embodiment, the operation state management table (ST-TBL) 12 that holds the operation states of the agents in the managers (MG-1, MG-2) 11-1, 11-2, respectively. To provide.

Each of the above managers (MG-1, MG-2)
The operation state management table (ST-
TBL) 12 is managed independently of each other, and writing of the table can be performed only by the manager who manages the table. Further, the operation state management table (ST-
The TBL) 12 can also be read by other managers via the manager managing the table.

FIG. 2 shows the above managers (MG-1, M).
G-2) It is a figure which shows one structural example of the operation state management table (ST-TBL) 12 which 11-1 and 11-2 manage. Here, each manager (MG-1, MG-2) 11-1,
11-2 manages m agents (AG-1,
AG-2, ... AG-m) 21-1, 21-2, ... 21-m exist, and each agent thereof manages n management objects (oj-1, oj-2, ... Oj-n) 22. According to this, m agents (AG-1, AG-2, ...
-M) An information block unique to each of 21-1, 21-2, ..., 21-m is provided, and a flag indicating whether or not the object is being operated in units of management objects in each of the information blocks. (MF), and a manager number register (MG NO.) Indicating which manager is operating during operation.

FIGS. 3 to 5 are diagrams showing the operation sequence of the above embodiment, of which FIG. 3 is a view showing the operation sequence of the embodiment in the normal state, and FIG. 4 is at the time of occurrence of a manager failure. FIG. 5 is a diagram showing an operation sequence of the embodiment, and FIG. 5 is a diagram showing an operation sequence of the embodiment when a failure occurs in the manager having the operation right.

In the configuration of FIG. 1 described above, only two managers existing on the system are shown, but in FIGS. 3 to 5, the case where there are three managers is taken as an example. Therefore, the manager (MG-1, MG-2) 1 will be described in the following explanation of the operation using FIG. 3 to FIG.
The operation will be described by adding the manager (MG-3) 11-3 to 1-1 and 11-2.

The operation of the first embodiment of the present invention will now be described with reference to the above figures. First, the operation of the embodiment in the normal state will be described with reference to FIG. As an initial state, all agents (AG-1, AG-2,
... AG-m) 21-1, 21-2, ... 21-m All managed objects (oj-1, oj-2, ... oj-n) 22 are not in the operating state. That is, each manager (MG-1, MG-
2, MG-3) 11-1, 11-2, 11-3 manages the operation state management table (ST-TBL) 12 and holds all the operation state flags (MF) are all off (for example, "0"). It has become. At this time, of course, the contents of the manager number register (MG NO.) Are all meaningless (Null state).

Here, for example, the manager (MG-1) 1
In 1-1, it is assumed that an event for operating the management objects (oj-1, oj-2, ... Oj-n) 22 implemented by the agent (AG-1) 21-1 has occurred.

At this time, the manager (MG-1) 11
-1 first refers to the operation state management table (ST-TBL) 12 managed by the manager, and confirms whether the management object to be operated from now is currently in use.

Here, the manager (MG-1) 11-1 which has judged that it is not in use, next
-1) Another manager (MG) that monitors and controls 21-1
-2, MG-3) 11-2, 11-3 is sent an operation permission request (see FIGS. 3 (a) and 3 (b)).

This manager (MG-2, MG-3) 1
The operation permission request sent to 1-2 and 11-3 includes data indicating an agent to be operated (referred to as an agent number) and data indicating a managed object (referred to as an object name).

Upon receipt of the operation permission request, the manager (MG-
2, MG-3) 11-2 and 11-3 use the agent (agent number) and the management object (object name) included in the operation permission request signal as keys to manage the operation state management table (ST). -TB
L) 12 is referred to, and it is confirmed whether or not the management object to be operated is currently being operated.

Manager (MG-2, MG-3) 11-
When it is determined that the requested managed object is not being operated, 2 and 11-3 indicate the requested managed object in the operation state management table (ST-TBL) 12 under the self-management target. A flag holding the operation state is set to ON (for example, 1), a manager number indicating which manager is operating the managed object is set, and an operation permission response is sent to the manager (MG-1) 11-1. Return (Fig. 3 (c), (d)
reference).

When the manager (M
G-1) 11-1 turns on (“1”) the flag holding the operation state of the managed object to be operated in the operation state management table (ST-TBL) 12 managed by the manager, and The manager number is written in the operation state management table (ST-TBL) 12.

In the sequence up to this point, the operation right of the requested management object is the manager (MG-1).
Until the manager 11-1 sends the operation completion notification, the manager has acquired the notification.

During this time, other managers (MG-2, MG
-3) Even if 11-2 and 11-3 attempt to operate the management object for which the operation right has been determined (the manager (MG-1) 11-1 has acquired the operation right)
The manager (MG-2, MG-3) 11-2, 11-3
Is an operation state management table (ST
-TBL) 12, it is found that the management object is in use, and the processing cannot be continued. Even if it is determined that the operation status management table (ST-TBL) 12 is not in use, the response from another manager to the operation permission request is “denial”, and the processing cannot be continued.

Manager (MG-1) 11 who has obtained the operation right
-1 operates the management object to be operated on the agent (AG-1) 21-1 (see FIG. 3).
(See (e) and (f)).

When the manager (MG-1) 11-1 finishes the operation, the manager (MG-1) 11-1 turns off the flag holding the operation state of the target management object in the operation state management table (ST-TBL) 12 managed by the manager. (“0”) and an operation end notification indicating that the operation of the management object is ended is displayed on each of the other managers (MG-).
2, MG-3) 11-2, 11-3 (Fig. 3
(See (g) and (h)).

This operation end notification includes data indicating the agent and the management object, as in the operation permission request described above. That is, here, the agent number indicating the agent that ends the operation and the object name indicating the management object are included.

The manager (MG-
2, MG-3) 11-2 and 11-3 use the agent (agent number) and the management object (object name) included in the operation end notification as keys to manage the operation state management table (ST- TBL)
The flag holding the operation state of the target managed object in 12 is set to off (“0”), and the operation end response is returned to the manager (MG-1) 11-1 (FIG. 3 (i), (See (j)).

The manager (MG-
1) 11-1 confirms that the content of the response is normal,
End the sequence. Next, in the first embodiment of the present invention, an example of system operation when a failure occurs in a manager in the network will be described with reference to FIG.

FIG. 4 is a diagram showing an operation sequence of the embodiment when a manager failure occurs. Here, in the manager (MG-1) 11-1, the agent (A
G-1) Manager (MG-3) 11 when an event for operating a management object implemented by 21-1 occurs
-3 illustrates a case where a failure occurs.

In the manager (MG-1) 11-1,
When an event for operating the management object implemented by the agent (AG-1) 21-1 occurs, the manager (MG-1) 11-1 firstly operates the operation state management table (ST-TBL) 12 managed by its own manager. After confirming the unoperated state of the management object to be operated by referring to the above, the agent (AG-1) that issued the operation request
21-1 monitor and control other managers (MG-2,
The MG-3) 11-2, 11-3 sends an operation permission request (see FIGS. 4A and 4B).

At this time, the manager (MG-1) 11-1
Monitors the operation permission response from each manager in response to the operation permission request, and accordingly, the timer for the operation permission response from the managers (MG-2, MG-3) 11-2, 11-3 is sent along with the transmission of the operation permission request. Is set.

The manager (MG-
2) 11-2 confirms that the management object is not being operated, and then sends an operation permission response to the manager (MG-1) 1
Although it is returned to 1-1, the manager (MG-3) 11-3 issues an operation permission response to the manager (MG-
1) Cannot return to 11-1 (Figs. 4 (c), (d))
reference).

At this time, from the viewpoint of exclusive control, originally, the manager (MG-1) 11-1 has all the managers (MG-2, MG-3) 11-2, 1 which sent the operation permission request.
If the operation permission response is not returned from 1-3, the agent (A
G-1) The operation right of 21-1 cannot be obtained, but in this embodiment, if the operation permission response is not returned by the time-out of the previously set timer, the operation permission response is returned. The manager who does not come is judged to be in a failure and temporarily removes the manager from the condition for acquiring the operation right so that the sequence can be continued. Here, the manager (MG-3) 11-3 to which no response is returned is temporarily excluded from the condition for acquiring the operation right, and the sequence is continued (FIG. 4 (e)-
(See (g)).

Next, when the manager (MG-3) 11-3 recovers from the failure, the manager (MG-3) 11-1 temporarily sets the manager (MG-3) as a judgment condition for acquiring the operation right. ) 11-3 must be incorporated, and also
The manager (MG-1) 11-1 is the agent (AG-
1) When the failure of the manager (MG-3) 11-3 is recovered before the operation for 21-1 is completed, the operation managed by the manager (MG-1, MG-2) 11-1, 11-2 A difference occurs between the state management table (ST-TBL) 12 and the operation state management table (ST-TBL) 12 managed by the manager (MG-3) 11-3.

Therefore, each manager sends a start notification indicating that the manager has started to each other at the time of starting, and if the manager of the notification source is excluded from the judgment condition, the manager is included in the judgment condition. To do.
Furthermore, the manager that has notified the activation notification is simultaneously operated by another manager (for example, an adjacent manager) by the operation state management table (ST-TBL).
12 is acquired. Here, when the manager (MG-3) 11-3 is started up due to failure recovery, a start-up notification indicating that the manager (MG-3) 11-3 has started up is sent to each of the other managers (MG-1, MG). −
2) Send to 11-1 and 11-2, and notify the manager (M
If G-3) 11-3 is excluded from the above judgment conditions, the manager (MG-3) 11-3 is included in the judgment conditions. Furthermore, the manager (MG
-3) 11-3 receives from another manager, for example, the adjacent manager (MG-2) 11-2, to the manager (MG
-2) Operation state management table (ST-
TBL) 12 is acquired. The subsequent sequence operation is similar to the above-described normal operation (see FIGS. 4 (h) to 4 (l)).

As described above, even if one manager in the network fails, each of the other managers can acquire the operation right of the management object, and the operation state management that has occurred during the failure occurs. The table differences can be quickly matched at the time of failure recovery.

Next, in the first embodiment of the present invention, an example of system operation when a failure occurs in the manager who has the operation right will be described with reference to FIG. FIG. 5 is a diagram showing an operation sequence of the embodiment when a failure occurs in the manager having the operation right. Here, a failure occurs in the manager (MG-1) 11-1 having the operation right, and then recovery is performed. This is shown as an example.

The manager (MG-1) 11-1 acquires the operation right in the same manner as in the above-described embodiment (see FIG. 5 (a)-
(F)), and when a failure occurs thereafter, at the time of start-up accompanying recovery from the failure, similarly to the above-described embodiment, start-up indicating that the manager (MG-1) 11-1 has started up. Notify each other manager (MG-2, MG
-3) Send to 11-2 and 11-3 (Figs. 5 (g) and 5 (h))
reference).

Here, software that implements the function of the manager generally cannot initialize the sequence that was being executed because the memory is initialized when the sequence is restored when a failure occurs.

Therefore, the managers (MG-2, MG-
3) 11-2 and 11-3 are managers (MG-1) 11-1
Is aware that he has the right to operate,
The manager (MG-1) 11-1 itself does not have the operation right and is in the initial state, which causes a contradiction in the network.

Therefore, in this embodiment, when a manager notifies another manager of the start-up at the time of start-up,
If the manager that received the startup notification includes the manager that sent the startup notification as an operation manager in the operation status management table, it is possible to avoid this by turning off the flag at that location. Become. Further, since the manager that has sent the activation notification subsequently acquires the operation state management table from another manager, the operation state management tables of the respective managers can be quickly matched.

That is, in the example of FIG. 5, the manager (MG-
2, MG-3) 11-2, 11-3 are managers (MG-
1) Upon receiving the activation notification from 11-1, each manager (M
Each of the G-2, MG-3) 11-2, 11-3 is an operation state management table (ST-TBL) 12 managed by the manager (MG-1) 11-1 that is the notification source of the activation notification.
It is checked whether or not it is included (set) in the operation manager inside, and if it is included (if set), the flag at that location is turned off (“0”). Further, the manager (MG-1) 11-1 which has sent the activation notification subsequently operates the operation state management table (ST-TBL) 1 managed by itself.
2 to another manager (for example, manager (MG-2) 1
1-2), each manager (MG-
1, MG-2, MG-3) 11-1, 11-2, and 11-3 have operation state management tables (ST-TBL) 12 that promptly match each other (see FIGS. 5 (i) and 5 (j)). ).

As described above with reference to the embodiments at the time of failure shown in FIGS. 4 and 5, even if any manager in the network fails, another manager can continue the processing. It is possible, and at the time of recovery from the failure, exclusive control that is not affected by the failure is possible, that is, all the operation state management tables existing in the network are quickly synchronized and matched.

As described above, according to the first embodiment of the present invention, the management table for exclusive control and the writing / reading processing to / from this table are all provided on the manager side, so that these are executed in the agent. It becomes possible to perform exclusive control processing between managers in an agent multi-vendor environment that does not depend on the implementation of.

Next, a second embodiment of the present invention will be described with reference to FIGS. Since the configuration of the entire system is the same as that of the above-described first embodiment, the description thereof is omitted here.

Also in the second embodiment, a manager is connected to each of a plurality of agents in the network, and each manager manages all the agents in the network. Therefore, exclusive control between the managers must be performed. , When a managed object under an agent in a network is operated by multiple managers at the same time, unexpected and inconvenient results may occur.

Also in this embodiment, each manager has its own operation management table, and each manager independently manages and writes (updates) the table.
Is allowed only by the manager who manages the table.

FIG. 6 shows a second embodiment of the present invention.
FIG. 3 is a diagram showing an example of the configuration of an operation management table managed by each manager, in which there are m agents managed by the manager, each agent has n managed objects, and each unit has a function operation unit (object unit). A flag (S1F, S2F,
, SnF), and a flag (E1F, E2) indicating which agent is operating when operating.
F, ..., EmF) can be written.

That is, here, the manager (MG-1,
MG-2, MG-3) 11-1, 11-2, 11-3 are respectively m agents (AG-1, AG-2, ... AG-).
m) 21-1, 21-2, ... 21-m are managed, and each agent (AG-1, AG-2, ... AG-m) 21-1, 21-
2, ... 21-m are n managed objects (oj-1,
The configuration of the operation state management table (ST-TBL) 12A in the case of the configuration having oj-2, ... Oj-n) 22 is shown, and S1F, S2F, ... E1 is a first management flag indicating whether each of the objects (oj-1, oj-2, ... Oj-n) 22 is in operation.
F, E2F, ..., EmF are second management flags indicating which agent is operating when operating.

7 to 9 are diagrams showing the operation sequence of the second embodiment, of which FIG. 7 is a diagram showing the operation sequence of the embodiment in the normal state, and FIG.
FIG. 9 is a diagram showing an operation sequence of the embodiment when an agent object operation conflicts, and FIG. 9 is a diagram showing an operation sequence of the embodiment when a manager having an operation right has a failure.

The operation of the second embodiment of the present invention will be described with reference to FIGS. 1 and 6 to 9 described above. First, the operation of the embodiment in the normal state will be described with reference to FIG.

In the initial state, all agents (AG-1, AG-2, ... AG-m) 21-1, 21-2,
… All 21-m managed objects (oj-1, oj-2,… oj-
n) 22 is not in the operating state. That is, each manager (MG-1, MG-2, MG-3) 11-1, 11-
Operation state management table (ST-T managed by 2, 11-3
(BL) The first management flag (S
, 1F, S2F, ..., SnF) and the second management flags (E1F, E2F, ..., EmF) are all off (reset state; for example, 0).

In the manager (MG-1) 11-1,
When an event for operating the management objects (oj-1, oj-2, ... Oj-n) 22 implemented by the agent (AG-1) 21-1 occurs, the manager (MG-1) 11-1 determines its own manager. Other managers (MG-2, MG-3) 11 that monitor and control the agent (AG-1) 21-1 in the same manner as
-2 and 11-3, in order to recognize whether or not the same operation is performed, the above managers (MG-2, MG-
3) Send an operation confirmation request to 11-2 and 11-3 (Fig. 7
(See (a) and (b)).

In the signal of the operation confirmation request, the above-mentioned first
As in the case of the embodiment, data indicating the agent to be operated and the management object is included. Each manager (MG-2, M that has received the operation confirmation request)
G-3) 11-2 and 11-3 are operation state management tables (ST-T) managed by the manager using the agents and management objects included in the operation confirmation request signal as keys.
BL) 12A, and confirms whether or not the requested management object, that is, the management object inquired is in operation.

Here, the managers (MG-2, MG-
3) 11-2 and 11-3, when confirming that the management object inquired is not in operation, send an operation confirmation response including data indicating that the management object inquired is not in operation to the manager ( MG-
1) Return to 11-1 (see FIGS. 7C and 7D).

The manager (MG-
1) 11-1 is a first management flag (SiF) (i = 1/2 /) indicating an operation state of a managed object to be operated in an operation state management table (ST-TBL) 12A managed by the manager. ... / n) and the second management flag (EjF) corresponding to the agent performing the operation.
(J = 1/2 /.../ m) are set to ON ("1") respectively, and the target agent (AG-j) 21-j is controlled (FIGS. 7E and 7F). reference). When the control is completed, the first management flag (SiF) and the second management flag (EjF) are turned off (“0”).

Further, the manager (MG-1) 11-1
When another manager (for example, MG-3) 11-3 issues an operation confirmation request by the same object designation as the above operation during the control according to the request from the first management flag (SiF). , And the second management flag (EjF) is turned on (“1”), and an operation confirmation response in which data indicating that the operation is in progress is set is sent to the manager (MG-3) 11-3. return.

Next, in the second embodiment of the present invention, an example of system operation when a certain manager in the network has already performed the same operation will be described with reference to FIG.

In the manager (MG-1) 11-1,
When an event for operating a management object implemented by the agent (AG-1) 21-1 occurs, the manager (MG-1) 11-1 determines that the agent (AG-1) 21
Other managers (MG-2, MG-
3) An operation confirmation request similar to the above is sent to 11-2 and 11-3 to confirm whether the same operation is performed (see FIGS. 8A and 8B).

The manager (MG-
2, MG-3) 11-2, 11-3 refer to the operation state management table (ST-TBL) 12A managed by the manager, using the agent and the management object included in the operation confirmation request signal as keys, Check if the managed object is in operation.

Here, the manager (MG-2,) 11 that has determined that the request management object is not being operated
-2 returns an operation confirmation response having data indicating that it is not in operation to the manager (MG-1) 11-1 (FIG. 8 (c)).
reference).

On the other hand, the manager (MG-3) 11-3 is
Since the manager (MG-1) 11-1 is operating the managed object that is about to be operated, the manager (MG-1) 11-1 sends an operation confirmation response having data indicating that the management object is being operated. (See FIG. 8D).

The manager (MG-
1) The 11-1 recognizes that the manager (MG-3) 11-3 has already operated the requested object, displays a message on the screen notifying the user that the operation cannot be performed, and displays the flag. The process is stopped without updating.

Next, in the second embodiment of the present invention, an example of system operation when a failure occurs in a manager (here, the manager (MG-3) 11-3) in the network is shown in FIG. Will be described with reference to.

In the manager (MG-1) 11-1,
When an event for operating a management object implemented by the agent (AG-1) 21-1 occurs, the manager (MG-1) 11-1 first determines the agent (AG-1).
21-1 other managers (MG-2, M) that monitor and control
G-3) Send an operation permission request to 11-2 and 11-3 (see FIGS. 9A and 9B).

Furthermore, the manager (MG-1) 11-1 sends the operation confirmation request to the manager (MG-2, M).
G-3) Set a timer to monitor the operation permission response from 11-2 and 11-3.

The manager (M
G-2) 11-2 confirms that the management object is not being operated, and then sends an operation permission response to the manager (MG-
1) Return to 11-1. Meanwhile, the manager (MG-3) 11
-3, the operation permission response cannot be returned to the manager (MG-1) 11-1 because a failure has occurred (FIG. 9).
(See (c) and (d)).

The manager (MG-1) 11-1 sends all the operation permission requests to all the managers (MG-2, MG).
-3) If the operation permission response is not returned from 11-2 and 11-3, the control operation of the agent (AG-1) 21-1 is not performed, but the operation confirmation response is returned before the timer set previously expires. If it does not come, the manager judges that there is a failure and continues processing on the display screen,
A message prompting the user to decide whether to cancel is displayed, and the process is switched according to the content of the decision.

If it is determined to continue, the flag is turned on ("0") and the manager (MG-1) 11-1
Control against. When the processing is completed, the flag is turned off (“0”) and the sequence is completed. If it is determined to stop, the flag is not turned on and the sequence is ended without controlling the agent.

While a message prompting the user to decide whether to continue or cancel the processing is displayed on the screen,
When the same operation confirmation request is received from another manager, the manager (MG-1) 11-1 returns an operation confirmation response having data indicating that the operation is not being performed, and the manager (MG-1) 11-1 Processing is canceled forcibly (Fig. 9)
(E) to (g)).

As described above, also in the second embodiment of the present invention, the operation management table for exclusive control between monitoring devices and the write / read processing to / from this table must all be on the manager side. As a result, exclusive control processing between managers in a multi-vendor environment of agents is possible regardless of whether these are implemented in the agent.

[0072]

As described in detail above, according to the present invention, in an information communication system in which a plurality of (n) agents that configure a network are managed by a plurality (m) of managers, exclusion on the agent side is performed. A reliable and efficient exclusive control function can be realized only by the processing on the manager side without access to the agent side, regardless of whether the operation state management table for control and its access control mechanism are implemented. An information communication system and a network monitoring control device can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of a system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an operation state management table according to the first embodiment of the present invention.

FIG. 3 is a diagram showing an operation sequence in a normal state for explaining the operation of the first embodiment.

FIG. 4 is a diagram showing an operation sequence when a manager failure occurs for explaining the operation of the first embodiment.

FIG. 5 is a diagram showing an operation sequence at the time of failure of the manager having the operation right for explaining the operation of the first embodiment.

FIG. 6 is a diagram showing a configuration of an operation management table according to the second embodiment of the present invention.

FIG. 7 is a diagram showing an operation sequence in a normal state for explaining the operation of the second embodiment.

FIG. 8 is a diagram showing an operation sequence during an object operation conflict of an agent for explaining the operation of the second embodiment.

FIG. 9 is a diagram showing an operation sequence when a failure occurs in a manager having an operation right for explaining the operation of the second embodiment.

[Explanation of symbols]

11-1, 11-2, 11-3 ... Manager (MG-1, MG
-2, MG-3) 12, 12A ... Operation state management table (ST-TB
L), 21-1, 21-2, ... 21-m ... Agent (AG-1,
AG-2, ... AG-m), 22 ... Management objects (oj-1, oj-2, ... Oj-n).

Continuation of the front page (56) Reference JP-A-5-344140 (JP, A) JP-A-10-150457 (JP, A) JP-A-8-293897 (JP, A) JP-A-57-183152 (JP , A) JP 58-34647 (JP, A) JP 61-24348 (JP, A) JP 53-11292 (JP, A) JP-B 7-58973 (JP, B2) JP 63-47036 (JP, B1) JP-B 56-35359 (JP, B1) JP-B 63-48477 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 12/437 H04L 12/24 H04L 12/26 H04L 29/14

Claims (10)

(57) [Claims] We claim: 1. have your transmission device, each constituting a network to an information communication system for managing a plurality of network management system, to the each network management system, the respective operation states of the management objects belonging to the transmission device The operation status management table to be held and the management objects belonging to any of the transmission devices
When an operation request is generated, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table provided in the own device, and it is determined that it is not in operation. When the operation target management object
An operation permission request processing means for registering the operating state of the object in the operation state management table provided in the own device, and issuing an operation permission request of the management object to another network monitoring control device, and another network monitoring control When an operation permission request is received from the device, the operation state management table provided in the device is referenced to determine whether or not the management object subject to the operation permission is in operation, and confirm that it is not in operation. When it is determined, the operating status of the managed object subject to the operation permission is registered in the operation state management table provided in the own apparatus, and the network monitoring control apparatus that issued the operation permission request permits the operation of the managed object . A network monitoring controller having an operation permission response processing means for notifying a response and having an operation state management table An information communication system and performs exclusive control for the operation of the transmission apparatus without accessing the transmission apparatus using the table. 2. A have your transmission device, each constituting a network to an information communication system for managing a plurality of network management system, to the each network management system, the respective operation states of the management objects belonging to the transmission device The operation status management table to be held and the management objects belonging to any of the transmission devices
When an operation request is generated, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table provided in the own device, and it is determined that it is not in operation. When this occurs, a means for issuing an operation permission request for the managed object to another network monitoring control device and the responses from all other network monitoring control devices to the operation permission request are monitored, and all other devices are monitored within a predetermined time. When there is a response from the network monitoring controller of
When a process for acquiring the operation right of the operation target managed object is performed and there is a network monitoring control device that does not respond within the predetermined time, the network monitoring control device that does not respond is temporarily changed from the transmission target of the operation permission request. Management target object according to the operation permission response from all the other network monitoring and control devices.
Means for executing processing for obtaining a preparative right, at startup, to all other network management system,
A means for issuing a startup notification to declare normal operation and acquiring an operation status management table from another network monitoring control device, and operating the network monitoring control device when a startup notification is received from another network monitoring control device. When a network monitoring control device that does not operate normally is present on the network, the network monitoring control device is temporarily disconnected from the network and operation is continued. When the separated network monitoring control device returns to a normal state, it acquires an operation state management table from another network monitoring control device and performs exclusive control for the operation of each transmission device using the table. Information and communication system. 3. A have your transmission device, each constituting a network to an information communication system for managing a plurality of network management system, to the each network management system, the respective operation states of the management objects belonging to the transmission device The operation status management table to be held and the management objects belonging to any of the transmission devices
When an operation request is generated, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table provided in the own device, and it is determined that it is not in operation. When the operation target management object
An operation permission request processing means for registering the operating state of the object in the operation state management table provided in the own device, and issuing an operation permission request of the management object to another network monitoring control device, and another network monitoring control When an operation permission request is received from the device, the operation state management table provided in the device is referenced to determine whether or not the management object subject to the operation permission is in operation, and confirm that it is not in operation. When it is determined, the operating status of the managed object subject to the operation permission is registered in the operation state management table provided in the own apparatus, and the network monitoring control apparatus that issued the operation permission request permits the operation of the managed object . An operation permission response processing means for notifying a response, and a network monitoring control device that does not respond to the operation permission request. When there is a network monitoring control device that does not respond, the operator displays a selection screen for instructing whether to continue or cancel the process, and processes according to the operator's instruction on the selection screen. An information communication system comprising: a means for executing. 4. The operation state management table has an information block corresponding to each transmission device, and in each of the information blocks, which management object of the corresponding transmission device is assigned to which network monitoring control device. claims, characterized in that have a holding portion which indicates whether the manipulated
Item 5. The information communication system according to any one of Items 1 to 3 . 5. The operation state management table has an information block corresponding to each transmission device, and each of the information blocks has a management flag indicating an operation state in units of managed objects of the transmission device. Characterized by
The information communication system according to any one of claims 1 to 3 . The method according to claim 6, wherein the operation status management table, each management object of a transmission apparatus, according to claim 1 to 3, characterized in that to have a management flag indicating the state of use of the transmission device
The information communication system according to any one . And characterized that you configure the ring network 7. said network management system and the same number or more of the plurality of transmission devices are connected in a ring by the optical cable
The information communication system according to any one of claims 1 to 3 . The transmission device constituting 8. A telecommunications system
An operation status management table that holds the operation status of each managed object to which it belongs and a management object that belongs to one of the transmission devices
When an operation request is made, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table, and it is determined that it is not in operation. registers the operation in state of the operation target managed object to the operation status management table, the information communication
When receiving means for sending the other device operation permission request for the managed objects through the system, an operation permission request from another device via the information communication system, the operation permission by referring to the operation status management table When it is determined whether or not the target managed object is in operation, and when it is determined that it is not in operation, the operating status of the managed object that is the operation permission target is registered in the operation status management table, and the operation A means for notifying the other device that has issued the permission request of the operation permission response of the management object , and performing exclusive control for the operation of each transmission device on the system without access to the transmission device. Network monitoring and control equipment. A transmission apparatus constituting a 9. Information Communication System
An operation status management table that holds the operation status of each managed object to which it belongs and a management object that belongs to one of the transmission devices
When an operation request is made, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table, and it is determined that it is not in operation. , The management object on the information communication system
And a means for transmitting an operation permission request, and monitoring a response from the other device to the operation permission request,
When a normal response is confirmed, the operation target management object
And executes a process of acquiring a preparative right, when another device is not responding present, temporarily excludes no the response other device from transmitting for the operation authorization request, in accordance with an operation authorization response from the remaining other devices A means for executing a process for acquiring an operation right of the operation target managed object , a means for transmitting a start notification indicating a normal start on the information communication system at the time of starting, and acquiring an operation state management table from another device. When receiving a start notification from another device via the information communication system , the device includes a means for incorporating the other device into a transmission target of an operation permission request, and is the same type as the own device that does not normally operate on the information communication system . A network monitoring control apparatus characterized in that, when an apparatus exists, the apparatus is temporarily disconnected from the information communication system to continue the operation. 10. A transmission device constituting an information communication system.
Operation status management table that holds the operation status of each managed object that belongs to the
When an operation request is made, it is determined whether or not the managed object that is the operation request target is in operation by referring to the operation state management table, and it is determined that it is not in operation. registers the operation in state of the operation target managed object to the operation status management table, the information communication
When receiving means for issuing a different device operation permission request for the managed objects through the system, an operation permission request from another device via the information communication system, the operation permission by referring to the operation status management table When it is determined whether or not the target managed object is in operation, and when it is determined that it is not in operation, the operating status of the managed object that is the operation permission target is registered in the operation state management table, and the operation A means for notifying the other device that has issued the permission request of the operation permission response of the management object , and the process is continued when there is no normal response to the operation permission request from any of the other devices of the same type as the own device. And a means for displaying a selection screen for allowing the operator to select whether or not to execute processing according to the operator's instruction on the selection screen. Network management system, characterized and.