JP3446652B2 - Hierarchical network management system - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a hierarchical network.
In particular, the present invention relates to a hierarchical network management system that notifies a higher-level manager, which cannot directly detect a network failure occurring in a lower-level network, of the network failure via the higher-level network.

[0002]

2. Description of the Related Art Hitherto, a hierarchical network management system of this type has been constructed to manage and control a plurality of agents connected to a communication network. Here, the configuration of the conventional hierarchical network management system is shown in FIG. In the figure, the trap information that stores the state of the network failure is transmitted from the lower manager to the upper manager according to the flow of the arrow.
Therefore, not only the upper manager can manage the entire system, but also the lower manager can reduce the load on the upper manager itself by decentrally managing the agents.

Further, the number of upper managers is not limited to one, and there is a configuration in which a plurality of upper managers are installed as shown in FIG. By installing multiple upper managers,
Even when an arbitrary upper manager goes down due to a failure, another upper manager can continue to manage the network. Then, a process called an automatic action for activating an arbitrary process is executed on the upper manager in synchronization with the reception of the trap.

As a similar hierarchical network management system, the one disclosed in Japanese Patent Application Laid-Open No. 7-168771 is known. However, since the invention disclosed in this publication is configured to grasp the line failure or the like occurring in the network of the same level, the case where the line failure or the like occurs in the lower level network is taken into consideration. Absent.

[0005]

In the above-mentioned conventional hierarchical network management system, when communication cannot be established between one upper manager and one lower manager in the system configuration, the trap information is waited for after the network is restored. Since it is retransmitted, there is a problem in that the timing at which each upper manager receives the trap information is significantly different. For example, when an automatic action is executed based on the trap information reception timing, there is a problem in operation because a large deviation occurs in the activation timing of the automatic action processing.

The present invention has been made in view of the above problems. Even if a lower manager and one upper manager cannot communicate with each other, the trap information is received without a significant timing difference between the upper managers. By implementing this method, it is possible to provide a hierarchical network management system that can process automatic actions triggered at the timing of trap reception without any problems.
The purpose is to serve .

[0007]

In order to achieve the above object, the invention according to claim 1 has at least two or more upper managers connected to each other by a predetermined upper network, and each upper manager and a predetermined manager. A network failure that occurs in any lower level network in a hierarchical network composed of at least one lower level manager connected to the lower level network and an agent connected to the lower level manager via a predetermined data transfer path. In the hierarchical network management system, the lower manager is a trap processing unit,
Add trap ID to trap information from agent
The trap information with this ID added.
Notify the above manager via the lower network
Then, the upper manager receives the trap information.
Then, from the trap synchronization processing unit via the upper network
The trap reception confirmation processing unit of another upper manager.
And make a trap reception confirmation request, and
The ID for which a reception confirmation request has been made has been added from
When you receive an unreceived reply about trap information,
From the lap synchronization processing unit via the upper network,
Add the above ID to the trap processing section of another higher level manager
It is configured to transmit the trap information that is generated .

In the invention according to claim 1 configured as described above, the hierarchical network management system has at least two or more upper managers mutually connected by a predetermined upper network, and each upper manager and a predetermined manager. And at least one lower manager connected by the lower network and an agent connected to the lower manager by a predetermined data transfer path, and manages a network failure that occurs in any lower network.

Here, the agent detects a network failure and notifies the lower manager to which it is connected. Then, the middle manager on the side where the network failure does not occur in the lower network notifies the upper manager of the network failure via the lower network. Upon receiving this notification, the upper manager notifies the upper manager on the side where the network failure has occurred of the network failure via the upper network by the network failure notifying means.

That is, even if the lower manager and one of the upper managers cannot communicate with each other, by notifying the upper manager of the trap information relating to the incommunicable situation via the upper network, the timings of the respective upper managers are significantly increased. It is possible to realize a method of receiving trap information without shifting. As a result, it becomes possible to process the automatic action activated at the timing of trap reception without any problem.

[0011]

[0012]

[0013]

Further, in the present invention, when the lower manager notifies the upper manager of a network failure, the lower manager adds the time stamp of the trap information, the event ID, the IP address, etc. to the trap information ,
Check the identity of the trap information with this added ID
There is.

Furthermore, the invention according to claim 2, the upper manager is configured so as to store in the sequential trap storage unit notified of the added network failure a predetermined ID. With the above configuration, the upper manager sequentially stores the network failure notifications to which the predetermined IDs have been added.

Furthermore, according invention in claim 3, said upper manager receives notification of network failure, search the notification of network failures are sequentially stored, whether the corresponding network failure has been obtained Is configured to determine.

With the above-mentioned configuration, when the upper manager receives the notification of the network failure, it searches the sequentially stored notifications of the network failure and determines whether or not the corresponding network failure can be acquired. As a result, the upper manager can recognize whether or not a network failure has occurred in the lower network to which it is connected.

[0018]

[0019]

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a hierarchical network management system according to an embodiment of the present invention. In the figure, the hierarchical network management system is roughly composed of a higher-level manager 2 connected to the higher-level network 1, a lower-level network 3 connected to the higher-level manager 2, and a higher-level manager 4 connected to the higher-level network 1. It is composed of a lower network 5 connected to the upper manager 4 and an agent 8.

The upper manager 2 has a trap processing unit 22, a trap storage unit 24, a trap period processing unit 26, and a trap reception confirmation processing unit 28 as an internal configuration. Similarly, the upper manager 4 has an internal structure. The configuration includes a trap processing unit 42, a trap storage unit 44, a trap cycle processing unit 46, and a trap reception confirmation processing unit 48. Further, the lower manager 6 includes a trap processing unit 62 and a trap storage unit 64 as an internal configuration.

In the hierarchical network management system having such a configuration, the agent 8 sends trap information to the lower manager 6 when a network failure occurs. This trap information stores a trap, that is, a message regarding the name of the agent that has caused the network failure and the content of the failure. Here, the trap processing units 22, 42, 62 and the trap storage units 24, 44, 64 execute reception and transmission of trap information and storage of data. Then, the trap information transmitted from the agent 8 is received by the trap processing unit 62 of the lower manager 6, stored in the trap storage unit 64, and then sent to the upper managers 2 and 4 by the lower network 3,
5 is used to transmit.

The contents of the trap information received by the trap processing units 22 and 42 of the respective upper managers 2 and 4 are stored in the trap storage units 24 and 44. The trap synchronization processing unit 2 is based on the timing at which the trap processing units 22 and 42 of the upper managers 2 and 4 receive the trap information.
6, 46 confirms whether the trap information is received by the trap reception confirmation processing units 48, 28 of the other upper managers 4, 2 respectively. Therefore, the trap synchronization processing units 26 and 46 constitute the network failure notification means according to the present invention.

Here, consider a case where a communication failure occurs in the lower network 3 which connects the upper manager 2 and the lower manager 6. In such a case, when the trap information is transmitted from the lower manager 6, the upper manager 2 cannot receive the trap information. On the other hand, the upper manager 4 can receive the trap information.

Therefore, the upper manager 4 confirms the reception of the trap information from the trap synchronization processing unit 46 to the trap reception confirmation processing unit 28 by using the upper network 1 at the timing of receiving the trap information. Since the upper manager 2 has not received the trap information, the reply to the confirmation of the trap information reception is “not received”.
Therefore, the trap synchronization processing unit 46 sends the trap information to the trap processing unit 22 by using the higher level network 1.

Next, the operation of the present embodiment having the above-mentioned configuration will be described with reference to the drawings described later. FIG. 2 is a flowchart showing the processing contents of the trap information communication processing in the lower manager 6. Further, FIG. 3 is a flowchart showing the processing contents of the trap information confirmation processing executed by the trap synchronization processing unit 46 of the upper manager 4.
FIG. 4 is a flowchart showing the processing contents of the trap information search processing executed by the trap reception confirmation processing unit 28 of the upper manager 2.

In FIG. 2, the lower manager 6 confirms the trap information appropriately sent from the agent 8 (step S100). When the input of the trap information is confirmed, the trap information is received from the corresponding agent 8 (step S105). Next, in the trap information, the trap processing unit 62 uses a trap ID (formed from the time stamp of the trap information / event ID / IP address, etc.) to be used when confirming reception of the trap information between the upper managers. It is created and added to the trap information (step S110). Then, the trap information added with this trap ID is stored in the trap storage unit 64.
(Step S115), the trap information is transmitted to the upper managers 2 and 4 via the lower networks 3 and 5 (step S120).

Next, the contents of the trap information confirmation process executed by the upper manager 4 to which the trap information is transmitted from the lower manager 6 will be described. In FIG. 3, the trap processing unit 42 of the upper manager 4 determines whether the trap information is transmitted from the lower manager 6 (step S200). If it is determined that the trap information is input, the corresponding trap information is received (step S205). Then, this trap information is stored in the trap storage unit 44 (step S210). Next, the trap reception confirmation processing unit 28 of the upper manager 2 confirms the reception of the trap information via the upper network 1 (step S220).

The upper manager 2 having received the reception confirmation executes the trap information search process shown in FIG. In FIG. 4, the trap reception confirmation processing unit 28 normally waits for a reception confirmation request from another upper manager 4 (step S300). When a trap information reception confirmation request is received from the trap synchronization processing unit 46 (step S
305), the trap reception confirmation processing unit 28 acquires the trap information, extracts the trap ID from this trap information, and uses this trap ID as a key to match the trap information stored in the trap storage unit 24 with the history. The trap ID to be searched is searched (step S310).

If trap information having a trap ID that matches the trap ID of the trap information acquired from the upper manager 4 exists in the trap storage section 24 (step S315), the trap synchronization processing section 46 indicates "received". (Step S320), and if the trap information does not exist, “not received” is sent to the trap synchronization processing unit 46.
(Step S325).

Returning to FIG. 3, the trap synchronization processing unit 46 confirms the reply from the trap reception confirmation processing unit 28 (step S225) and the upper manager 2 must receive the corresponding trap information. For example, the trap information is transmitted from the trap synchronization processing unit 46 to the trap processing unit 22 using the host network 1 (step S230).

As described above, even when the upper manager 2 and the lower manager 6 cannot communicate with the lower network 3 and the upper manager 2 cannot receive the trap information, the upper manager 4 sends trap information to the upper manager 2. Is received, and if it is determined that it has not been received, the trap information can be sent using the higher level network 1, so trap information reception between the higher level managers 2 and 4 is possible. The timing deviation can be minimized.

[0033]

As described above, according to the present invention, even if the lower manager and one of the upper managers cannot communicate with each other, the trap information is received without a significant timing difference between the upper managers. By realizing it, it is possible to provide a hierarchical network management system capable of processing an automatic action activated at the timing of trap reception without any problem. Further, the upper manager can grasp the network failure that occurred in each lower network in substantially real time. Further, it becomes possible to grasp the details of the network failure in more detail. Furthermore, by history of network failure, it is possible to determine whether or not the network failure has already been notified, and at which lower level network the failure has occurred. become.

[0034]

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a hierarchical network management system according to the present invention.

FIG. 2 is a flowchart showing processing contents of trap information communication processing executed by a lower manager 6.

FIG. 3 is a flowchart showing the processing contents of trap information confirmation processing executed by a higher-level manager 4.

FIG. 4 is a flowchart showing the processing contents of trap information search processing executed by the upper manager 6.

FIG. 5 is a conceptual diagram of a hierarchical network system.

FIG. 6 is a conceptual diagram of a hierarchical network system.

[Explanation of symbols]

1 Upper network 2 Upper manager 3 Lower network 4 Upper manager 5 Lower network 6 lower managers 8 agents 22 Trap processing section 24 Trap storage 26 Trap synchronization processing unit 28 Trap reception confirmation processing unit 42 Trap processing section 44 trap storage 46 Trap synchronization processing unit 48 Trap reception confirmation processing unit 62 Trap processing unit 64 trap memory

Claims (3)

(57) [Claims] 1. At least two or more and mutually predetermined
Managers connected by the higher network of
And each upper manager and predetermined lower network
At least one or more subordinate managers connected
A computer that connects to a lower manager through a fixed data transfer path
Optional in a hierarchical network composed of
Manage network failures in lower level networks
A hierarchical network management system forThe lower manager is a trap processing unit, and
If you add the trap ID to the trap information from the
In addition, the trap information to which this ID is added
Notify the above manager via the network, The above manager isReceive the above trap information
Via the upper network from the trap synchronization processing unit
The trap reception confirmation processing unit of another upper manager.
And make a trap reception confirmation request, and
The ID for which a reception confirmation request has been made has been added from
When you receive an unreceived reply about trap information,
From the lap synchronization processing unit via the upper network,
Add the above ID to the trap processing section of another higher level manager
Sent trap informationHierarchical type characterized by
Network management system. 2. The hierarchical network management system according to claim 1 , wherein the upper manager sequentially stores a network failure notification to which a predetermined ID is added in a trap storage unit. Network management system. 3. The hierarchical network management system according to claim 2 , wherein, when the higher level manager receives the notification of the network failure, it sequentially searches the notifications of the network failure stored in the trap storage unit , A hierarchical network management system characterized by determining whether or not a corresponding network failure has been acquired.