JP5393418B2 - Network management system, monitoring server and display server - Google Patents

Description

  The present invention relates to a network management system capable of monitoring an entire large-scale network.

  A conventional network management apparatus connects to a network device to be managed by SNMP (Simple Network Management Protocol), and acquires the state of the network device using SNMP TRAP or GET. As described above, Patent Document 1 discloses a technique in which one network management apparatus grasps and manages the states of a plurality of network devices.

  On the other hand, in a large-scale network, it is difficult to obtain the status of all target network devices with a single network management device. As a technique that can solve such a difficult situation, for example, in Patent Document 2 below, the items that the network management device transmits to the network management device using TRAP to the network device are limited. A technique for managing a large-scale network with limited items is disclosed.

JP 2007-241518 A JP 2003-152720 A

  However, according to the above-described conventional technique, there is a problem that the scale of the target network is limited because the load on the network management apparatus increases as the scale of the network increases.

  Further, the conventional method for restricting the TRAP items has a problem in that it is difficult to sufficiently grasp the state of the network because the monitoring items are limited.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a network management system capable of sufficiently grasping the state of the network regardless of the scale of the network.

  In order to solve the above-described problems and achieve the object, the present invention makes it possible to share and monitor the monitoring target devices in the network, and obtain a plurality of pieces of status information of the monitoring target devices in charge as monitoring results. Status information of the monitoring target devices that are in charge of each of the monitoring servers and the plurality of monitoring servers, and the past status information recorded in the local server is updated to the latest status information by parallel processing. An integrated server for controlling the monitored devices in the network based on the status information of the network, and receiving the status information of the monitored devices in charge of each from the plurality of monitoring servers, and performing control for displaying the status information And a display server to perform.

  According to the present invention, there is an effect that the state of the network can be sufficiently grasped regardless of the scale of the network.

FIG. 1 is a diagram illustrating a physical configuration of a network management system. FIG. 2 is a diagram illustrating a logical configuration of the network management system according to the first embodiment. FIG. 3 is a diagram illustrating a logical configuration of the network management system according to the second embodiment. FIG. 4 is a diagram illustrating a logical configuration of the network management system according to the third embodiment. FIG. 5 is a diagram illustrating a logical configuration of the network management system according to the fourth embodiment.

  Embodiments of a network management system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a physical configuration diagram showing a configuration example of a network management system according to the present embodiment. In FIG. 1, a display server 1 is a server having a function of displaying the state of the entire network. The integrated server 2 is a server that holds state information of the entire network. The monitoring server 3 is a server that collects status information of the monitoring target device 4. One display server 1 and one integrated server 2 are installed in the network management system, respectively, and display status information of the entire network and hold status information of the entire network. A plurality of monitoring servers 3 exist in the system, share and monitor the monitoring target devices 4, and collect state information. Each server and the monitoring target device 4 are connected via the HUB 5.

  Next, the configuration of each server will be described. FIG. 2 is a logical configuration diagram showing the network management system of the present embodiment. The display server 1 includes a state display control unit 11, an SNMP (Simple Network Management Protocol) manager unit 12, and an RDA (Remote Database Access) client unit 13. The state display control unit 11 is a control unit that displays state information of the entire network. The SNMP manager unit 12 receives a change in state from the monitoring server 3 as TRAP by SNMP, and informs the state display control unit 11 of the update timing of the screen. The RDA client unit 13 searches the database of the integrated server 2 using RDA according to the request of the state display control unit 11.

  The integrated server 2 includes a control management control unit 21, a DBMS (Database Management System) unit 22, an RDA server unit 23, and an SNMP manager unit 24. Based on the database search result, the control management control unit 21 changes parameters of the monitoring target device 4 and requests acquisition of status information. The DBMS unit 22 is a database for storing status information of monitoring target devices necessary for grasping the entire system. The RDA server unit 23 searches the database in response to updates from the display server 1 and the monitoring server 3 by RDA. The SNMP manager unit 24 receives the request from the control management control unit 21 and operates the monitoring target device 4 via the monitoring server 3 by SNMP.

  The monitoring server 3 includes a management control unit 31, an SNMP manager unit 32, an SNMP agent unit 33, and an RDA client unit 34. The management control unit 31 coordinates information collection and setting from the monitoring target device 4 with the display server 1 and the integrated server 2. The SNMP manager unit 32 performs SNMP GET and SET for the monitored device 4 in accordance with the request of the management control unit 31 and receives TRAP from the monitored device 4. The SNMP agent unit 33 transmits an SNMP TRAP to the display server 1 according to an instruction from the management control unit 31, and accepts SNMP SET and GET requests from the integrated server 2. The RDA client unit 34 updates the database of the integrated server 2 by RDA.

  The monitoring target device 4 includes a device control unit 41, an SNMP MIB unit 42, and an SNMP agent unit 43. The device control unit 41 is software that controls the network. The change in the state of the network or device can be referred to from the outside by updating the SNMP MIB unit 42. The operation parameter is determined by referring to the SNMP MIB unit 42. The SNMP MIB unit 42 is a database for holding device operation parameters and states. The SNMP agent unit 43 receives the SNMP GET and SET from the management server 3, accesses the SNMP MIB unit 42, and transmits TRAP to the management server 3 regarding changes in the registered MIB.

  Next, the monitoring operation in the network management system will be described. First, a case where a TRAP is transmitted from the monitoring target device 4 will be described. In the monitored device 4, when the device control unit 41 detects a change in the state of the network or a failure of the device itself, the SNMP MIB unit 42 is updated (corresponding to 101 in FIG. 2; hereinafter, as in FIG. 2: 101). ). When this update is a TRAP notification target, the update (change) of the SNMP MIB unit 42 is transmitted to the SNMP agent unit 43 (FIG. 2: 102), and the SNMP agent unit 43 transmits TRAP to the monitoring server 3 ( Figure 2: 103).

  The SNMP manager unit 32 of the monitoring server 3 receives TRAP (FIG. 2: 103) and notifies the management control unit 31 of this (FIG. 2: 104). When the management control unit 31 determines that the information is insufficient only by the TRAP (FIG. 2: 103), the management control unit 31 makes an information acquisition request to the SNMP manager unit 32 (FIG. 2: 105). The SNMP manager unit 32 transmits an SNMP GET to the monitoring target device 4 in response to the information acquisition request (FIG. 2: 106). In response to this, the SNMP agent unit 43 accesses the SNMP MIB unit 42 (FIG. 2: 107), and transmits the status information acquired as a result of the access to the monitoring server 3 (FIG. 2: 108). The SNMP manager unit 32 notifies the management control unit 31 of the acquired state information (FIG. 2: 109).

  The management control unit 31 makes an update request (UPDATE) to the RDA client unit 34 based on the acquired status information (FIG. 2: 110), and the RDA client unit 34 sends a database to the integrated server 2. Update request (UPDATE) is transmitted (FIG. 2: 111). In the integrated server 2, the RDA server unit 23 receives this and updates the DBMS unit 22 (FIG. 2: 112). At this time, the update of the database is not confirmed on the DBMS unit 22, and the management control unit 31 of the monitoring server 3 confirms the update by confirming the update (COMMIT) in the same manner as the update request. In this case, similarly to UPDATE, the management control unit 31 confirms the update (COMMIT) to the RDA client unit 34 (FIG. 2: 113), and the RDA client unit 34 sends the database to the integrated server 2. Update confirmation (COMMIT) is transmitted (FIG. 2: 114). In the integrated server 2, the RDA server unit 23 receives this and confirms the update to the DBMS unit 22 (FIG. 2: 115).

  Next, the management control unit 31 notifies the SNMP agent unit 33 of the change (FIG. 2: 116), and the SNMP agent unit 33 notifies the display server 1 as SNMP TRAP (FIG. 2: 117). . When the status display control unit 11 of the display server 1 receives the notification from the SNMP manager unit 12 (FIG. 2: 118) and determines that the information for display change is insufficient, the status display control unit 11 The search is requested (FIG. 2: 119). The RDA client unit 13 makes a search request (SELECT) using RDA to the integrated server 2 (FIG. 2: 120). In the integrated server 2, the RDA server unit 23 searches the DBMS unit 22 (FIG. 2: 121), and transmits information for display change to the display server 1 as a search result (FIG. 2: 122). The RDA client unit 13 transmits the information acquired from the integrated server 2 to the state display control unit 11 (FIG. 2: 123), and the state display control unit 11 acquires the information acquired from the monitoring server 3 and the integrated server 2. Update the display based on.

  Next, a case where a SET is transmitted from the integrated server 2 will be described as a monitoring operation in the network management system. When the integrated management control unit 21 of the integrated server 2 changes the setting of the monitoring target device 4 in accordance with the search of the DBMS unit 22 (FIG. 2: 201), the integrated management control unit 21 sends the SNMP manager unit 24 A change request is made (FIG. 2: 202). The SNMP manager unit 24 transmits the change information as an SNMP SET to the SNMP agent unit 33 of the management server 3 that manages the monitored device 4 (FIG. 2: 203). In the monitoring server 3, the SNMP agent unit 33 transmits an SNMP SET to the monitored device 4 via the management control unit 31 and the SNMP manager unit 32 (FIG. 2: 204, 205) (FIG. 2: 206). In the monitored device 4, the SNMP agent unit 43 updates the SNMP MIB unit 42 by this SET (FIG. 2: 206) (FIG. 2: 207). Further, the device control unit 41 detects this update (FIG. 2: 208).

  Next, a case where a GET is transmitted from the integrated server 2 will be described as a monitoring operation in the network management system. When the integrated management control unit 21 of the integrated server 2 acquires the status information of the monitoring target device 4 at an arbitrary timing, similarly to the monitoring server 3 via the SNMP manager unit 24 (FIG. 2: 301). An SNMP GET is transmitted (FIG. 2: 302). In the monitoring server 3, the SNMP agent unit 33 requests the management control unit 31 to acquire state information (FIG. 2: 303). Similarly to the description of TRAP, the management control unit 31 similarly performs GET on the monitoring target device 4 (FIG. 2: 105, 106, 107), and obtains status information as a result (FIG. 2: 108). 109). The management control unit 31 transmits the acquired state information to the integrated server 2 via the SNMP agent unit 33 (FIG. 2: 304) (FIG. 2: 305, 306).

  As described above, there are a plurality of monitoring servers 3 in the network management system, and each monitoring server 3 monitors a plurality of devices 4 to be monitored. Regarding the status information of the monitoring target device 4 acquired by the monitoring server 3, the information as the entire system is recorded by the integrated server 2, and the display server 1 displays the system status. Even if the number of devices to be monitored increases, the number of monitoring servers 3 can be easily increased as a system. Moreover, since each server shares the function at the time of monitoring a system, a load can be reduced in each server.

  As described above, in the present embodiment, in the network management system, the monitoring target device is divided and managed by a plurality of monitoring servers, and the integrated server stores state information via this monitoring server, so that the entire system Is displayed on the display server. Thereby, even if it is a case where the monitoring object apparatus increases as a system, the state of the whole system can be grasped | ascertained without limiting a monitoring item.

  In addition, SNMP that is widely used in network devices is assumed between the monitoring target device and the monitoring server. However, RDA is used between the monitoring server and the integrated server, and the status information is recorded by RDA. Thereby, even if the number of monitoring servers increases, throughput can be ensured by the multiple processing of DBMS.

Embodiment 2. FIG.
In the first embodiment, the database update is determined for each TRAP. In the present embodiment, a method for improving the processing efficiency when a plurality of TRAPs occur will be described. A different part from Embodiment 1 is demonstrated.

  FIG. 3 is a logical configuration diagram showing the network management system of the present embodiment. The difference from the first embodiment is that the monitoring server 3a including the management control unit 31a is configured instead of the monitoring server 3. In addition, only the part of the process required for description is described, and the other parts are the same as those in the first embodiment (FIG. 2).

  Subsequently, the monitoring operation of the present embodiment will be described. In the monitoring target device 4, when the device control unit 41 detects a network state change or the like, the SNMP MIB unit 42 is updated (FIG. 3: 101a). If this update is a TRAP notification target, this change is made. Is transmitted to the SNMP agent unit 43 (FIG. 3: 102a), and the SNMP agent unit 43 transmits TRAP to the monitoring server 3 (FIG. 3: 103a). Furthermore, in the monitoring target device 4, the device control unit 41 detects a change in the network state and updates the SNMP MIB unit 42 (FIG. 3: 101b, 101c), and this change is transmitted to the SNMP agent unit 43 (FIG. 3). : 102b, 102c), the SNMP agent unit 43 transmits TRAP to the monitoring server 3 (FIG. 3: 103b, 103c).

  The management control unit 31a of the monitoring server 3 does not determine the update for each series of TRAPs (FIG. 3: 103a, 103b, 103c) received by the SNMP manager unit 32, but instead updates the database. For each update (FIG. 3: 110a, 110b, 110c), a confirmation request is made only once (FIG. 3: 113). The timing for this determination may be just before the management control unit 31a transmits a change notification (FIG. 3: 116) to the display server 1. Since the state display control unit 11 of the display server 1 is intended to show the change to the operator, it is not necessary to update the screen at every timing even if TRAP (FIG. 3: 117) is repeated. . Therefore, the timing for confirming the update follows this granularity. Alternatively, a minimum time interval for confirming the update may be defined, and the update may be confirmed at this timing.

  As described above, in this embodiment, the confirmation request is made only once for a plurality of update requests by adjusting the update confirmation timing. Thereby, even when TRAP frequently occurs from the monitoring target device, it is possible to reduce the load on the integrated server and the display server.

Embodiment 3 FIG.
In the first embodiment, the database is updated every time the state information is acquired from the monitoring target device. However, in the present embodiment, the update is performed only when there is a difference from the state stored in the management control unit. A portion different from the first embodiment will be described.

  FIG. 4 is a logical configuration diagram showing the network management system of the present embodiment. The difference from the first embodiment is that the monitoring server 3b including the management control unit 31b is configured instead of the monitoring server 3. In addition, only the part of the process required for description is described, and the other parts are the same as those in the first embodiment (FIG. 2).

  Subsequently, the monitoring operation of the present embodiment will be described. For example, in the management control unit 31b, when the state information is acquired from the monitoring target device 4 by GET (FIG. 4: 105 to 109), the management control unit 31b stores the value of the acquired state information. It is confirmed whether there is a change in value (FIG. 4: 401). If there is no change (FIG. 4: 401: No), the procedure is terminated without updating. When there is a change (FIG. 4: 401: Yes), the value stored in itself is updated (FIG. 4: 402). Thereafter, the management control unit 31b makes an update request (UPDATE) and an update confirmation (COMMIT) to the integrated server 2 (FIG. 4: 110 to 115).

  As described above, the management control unit 31b does not update the value when the value of the acquired state information is the same as the value stored in the management control unit 31b. Assuming that the value is the same as the existing value, an update request to the integrated server 2 is not performed. Also in the integrated server 2, it is not necessary to update with the same value contents, so the load can be reduced.

  As described above, in the present embodiment, the management control unit performs the update process only when there is a difference from the value of the state information stored. Thereby, the load of the integrated server can be reduced.

Embodiment 4 FIG.
In the first embodiment, the database of the integrated server is updated for all the status information acquired from the monitored devices. However, in this embodiment, the database is updated only for items managed by the integrated server. . A portion different from the first embodiment will be described.

  FIG. 5 is a logical configuration diagram showing the network management system of the present embodiment. The difference from the first embodiment is that the monitoring server 3c including the management control unit 31c is configured instead of the monitoring server 3. In addition, only the part of the process required for description is described, and the other parts are the same as those in the first embodiment (FIG. 2).

  Subsequently, the monitoring operation of the present embodiment will be described. For example, in the management control unit 31c, when information is acquired from the monitoring target device 4 by TRAP or GET (FIG. 5: 101 to 109), the management control unit 31c manages the acquired status information item in the integrated server 2. It is confirmed whether or not the item is in progress (FIG. 5: 501). If it is not a management item (FIG. 5: 501: No), the process is terminated without updating. In the case of a management item (FIG. 5: 501: Yes), the management control unit 31c makes an update request (UPDATE) and an update confirmation (COMMIT) to the integrated server 2 (FIG. 5: 110 to 115).

  In this way, the management control unit 31c does not update and does not perform update processing on the integrated server 2 when the acquired item of the status information is other than the management item managed by the integrated server 2. Even in the integrated server 2, it is not necessary to perform reception processing for items that are not managed, so that the load can be reduced.

  As described above, in the present embodiment, the management control unit performs update processing only on items necessary for updating the database of the integrated server among the information acquired from the monitoring target devices. Thereby, the load of the integrated server can be reduced.

  As described above, the network management system according to the present invention is useful for network management using SNMP, and is particularly suitable for large-scale network management.

DESCRIPTION OF SYMBOLS 1 Display server 2 Integrated server 3, 3a, 3b, 3c Monitoring server 4 Monitoring object apparatus 5 HUB
DESCRIPTION OF SYMBOLS 11 Status display control part 12 SNMP manager part 13 RDA client part 21 Control management control part 22 DBMS part 23 RDA server part 24 SNMP manager part 31, 31a, 31b, 31c Management control part 32 SNMP manager part 33 SNMP agent part 34 RDA client Unit 41 Device control unit 42 SNMP MIB unit 43 SNMP agent unit

Claims (17)

A plurality of monitoring servers that share monitoring target devices in the network and enable monitoring as a monitoring result, and obtain status information of the monitoring target devices that are in charge of each;
Based on the latest status information, the status information of the monitored devices that are in charge of each of the plurality of monitoring servers is received from the plurality of monitoring servers, and the past status information recorded in the server is updated to the latest status information by parallel processing An integrated server that controls monitored devices in the network,
A display server that receives status information of the monitoring target devices that each is in charge of from the plurality of monitoring servers, and performs control for displaying the status information;
Equipped with a,
When the display server determines that there is insufficient information for changing the display of the status information received from the monitoring server, the display server sends a search request to the integrated server to obtain search result information from the integrated server. Receiving and updating the display based on the information received from the monitoring server and the integration server,
A network management system characterized by that. The monitoring server is
Management control means for performing control for transmitting and receiving the status information of the monitored device in charge;
Receives status information sent from the monitoring target device in charge by SNMP (Simple Network Management Protocol), and requests status information from the monitoring target device in charge of SNMP based on the control of the management control means. Monitoring SNMP manager means for receiving the status information sent by SNMP as a response;
Monitoring SNMP agent means for transmitting status information to the display server by SNMP based on the control of the management control means, and for transmitting status information to the integrated server by SNMP in response to a request from the integrated server;
Monitoring RDA client means for transmitting status information to the integrated server by RDA (Remote Database Access) based on the control of the management control means;
The network management system according to claim 1, further comprising: The integrated server is
DBMS (Database Management System) means for recording status information received from the monitoring server;
The RDA receives status information of the monitored devices that are in charge from each monitoring server by RDA, updates the past status information recorded in the DBMS means to the latest status information by parallel processing, and further from the display server Integrated RDA server means for searching the DBMS means in response to the search request and returning status information obtained as a search result;
Control management control means for controlling the monitoring target device in the system based on the status information recorded in the DBMS means and the status information obtained by requesting the monitoring server;
Based on the control of the control management control means, an SNMP manager means for requesting status information from the monitoring server by SNMP and receiving status information sent by SNMP as a response;
The network management system according to claim 2, further comprising: The display server is
Status display control means for performing control for displaying status information received from the monitoring server and the integrated server;
Display SNMP manager means for receiving status information from the monitoring server via SNMP;
Based on the control of the status display control means, a display RDA client means for requesting a search to the integrated server by RDA and receiving status information sent by RDA as a response thereto;
The network management system according to claim 3, further comprising: The monitoring server is
When transmitting status information from the monitoring RDA client means to the integrated server,
The management control means sends the status information to the monitoring RDA client means by an update request, and then sends a confirmation request to confirm the status information to be updated,
The monitoring RDA client means transmits the update request and the confirmation request received from the management control means to the integrated server;
The network management system according to claim 2, 3, or 4. The management control means transmits a confirmation request once every time an update request is transmitted a predetermined number of times when performing control to transmit a plurality of status information.
The network management system according to claim 5. The management control means transmits a confirmation request once for a plurality of update requests transmitted within a predetermined period when performing control to transmit a plurality of status information.
The network management system according to claim 5. The management control means makes an update request for an item that has been changed in comparison with the previously acquired state information among the acquired state information.
The network management system according to claim 5, 6 or 7. The management control unit makes an update request for items recorded in the DBMS unit of the integrated server among the acquired status information.
The network management system according to any one of claims 5 to 8, wherein A network management system that consists of multiple monitoring servers that can monitor and monitor the devices in the network and obtain status information of the devices to be monitored, and the integrated server and display server. The monitoring server in
Management control means for performing control for transmitting and receiving the status information of the monitoring target device;
Receives status information sent from the monitoring target device in charge by SNMP (Simple Network Management Protocol), and requests status information from the monitoring target device in charge of SNMP based on the control of the management control means. Monitoring SNMP manager means for receiving the status information sent by SNMP as a response;
Monitoring SNMP agent means for transmitting status information to the display server by SNMP based on the control of the management control means, and for transmitting status information to the integrated server by SNMP in response to a request from the integrated server;
Monitoring RDA client means for transmitting status information to the integrated server by RDA (Remote Database Access) based on the control of the management control means;
A monitoring server comprising: When transmitting status information from the monitoring RDA client means to the integrated server,
The management control means sends the status information to the monitoring RDA client means by an update request, and then sends a confirmation request to confirm the status information to be updated,
The monitoring RDA client means transmits the update request and the confirmation request received from the management control means to the integrated server;
The monitoring server according to claim 10. The management control means transmits a confirmation request once every time an update request is transmitted a predetermined number of times when performing control to transmit a plurality of status information.
The monitoring server according to claim 11. The management control means transmits a confirmation request once for a plurality of update requests transmitted within a predetermined period when performing control to transmit a plurality of status information.
The monitoring server according to claim 11. The management control means makes an update request for an item that has been changed in comparison with the previously acquired state information among the acquired state information.
The monitoring server according to claim 11, 12 or 13. The management control unit makes an update request for items recorded in the DBMS unit of the integrated server among the acquired status information.
The monitoring server according to any one of claims 11 to 14, characterized in that:   In a network management system comprising a plurality of monitoring servers, an integrated server, and a display server that receives status information of devices to be monitored from each of the plurality of monitoring servers and performs control for displaying the status information The display server,
  When it is determined that information for display change is insufficient for the status information received from the monitoring server, a search request is made to the integrated server to receive search result information from the integrated server, and the monitoring Updating the display based on information received from the server and the integrated server;
  A display server characterized by that.   Status display control means for performing control for displaying status information received from the monitoring server and the integrated server;
  Display SNMP manager means for receiving status information from the monitoring server via SNMP;
  Based on the control of the status display control means, a display RDA client means for requesting a search to the integrated server by RDA and receiving status information sent by RDA as a response thereto;
  The display server according to claim 16, further comprising:

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