JPH11150540A - Integrated network management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the integrated network management system by which a plurality of local networks to be managed respectively by network management devices of different kinds are integrally managed efficiently. SOLUTION: Management information collection devices A8-C10 provided respectively to local networks A2-C4 extract network management information from protocol data units(PDU) of standard protocol used by network management devices (SNMP management devices A5-C7) in the local networks A2-C4, and store the information or inform an integral management device 11 of it. The integral management device 11 collects the management information obtained by the management information collection devices A8-C10 or receives notice from the management information collection devices A8-C10 and integrally manages the local networks A2-C4 independently of types of the network management devices (A5-C7).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for integrally managing a plurality of local networks which are individually managed by a network management apparatus using a common protocol. The present invention relates to an integrated network management system suitable for efficiently performing integrated management of local networks each having a network management device having a different information holding form.

[0002]

2. Description of the Related Art A conventional integrated network management system will be described with reference to the drawings. FIG. 8 is a block diagram showing a configuration example of a conventional integrated network management system. By using different types of network management devices A81 and B82 which are individually installed in the local network A83 and the local network B84,
The integrated management device 80 is connected to a plurality of local networks A8.
3 and B84 are integratedly managed.

[0003] The network management device A81 manages the local network A83 using a standard protocol. Similarly, the network management device B82 manages the local network B84 using the same standard protocol. However, a dedicated network management application program A81b is installed in the network management device A81, and management information collected from the local network A83 is stored in the database A81c. A dedicated network management application program B82b is mounted on the network management device B82, and management information collected from the local network B84 is stored in a database B
82c.

In such a configuration, in order for the integrated management device 80 to integrally manage the local networks A83 and B84, a function of providing the management information stored in the databases A81c and B82c to the integrated management device 80, a network management function, and the like. Programs A81a and B8 having a function of detecting events detected by the application programs A81b and B82b and notifying the integrated management device 80, for example.
2a is mounted on each of the network management devices A81 and B82, and the integrated management device 80 executes these adapter programs A via the management device interface unit 80b.
81a and B82a, and stores the management information or event in the management information database 80c. The integrated management application 80a uses the stored management information or directly uses the notified event to integrate. Need to be managed.

As described above, in the conventional integrated network management system, the network management device A81 and the network management device B82 hold the management information in a unique form. Therefore, adapter programs A81a and B82a for providing information to the integrated management device 80
Must be prepared separately for each type of network management devices A81 and B82.

Therefore, despite the standardization of the type of management information necessary for network management and the protocol to be transferred on the network, the management information of the local network managed by different types of network management devices A81 and B82. It is difficult to uniformly extract and manage multiple local networks.

Further, network management devices A81, B
If the specifications of the operating system 82 and the network management application programs A81b and B82b are changed, the management information held by the network management devices A81 and B82 is also used in the adapter programs A81a and B82a that provide the management information to the integrated management device 80. In some cases, it may be necessary to change specifications such as a function of accessing the management server and a function of transferring management information to the integrated management device 80.

[0008]

The problem to be solved is that, in the prior art, a function of accessing management information and a function of transferring management information to an integrated management device are prepared for each type of network management device. That is, the access function and the transfer function must be changed in accordance with the change in the specification of the network management device. An object of the present invention is to solve these problems of the prior art,
An object of the present invention is to provide an integrated network management system capable of efficiently performing integrated management of a plurality of local networks managed by different types of network management devices.

[0009]

In order to achieve the above object, an integrated network management system according to the present invention comprises management information collection devices A8 to C10 provided for each of the local networks A2 to C4 as shown in FIG. , A network management device (S) in each of the local networks A2 to C4.
Protocol data unit (PDU: Protocol Data Uni) of the standard protocol used by the NMP management devices A5 to C7)
From t), the management information of the network is extracted, stored and notified to the integrated management device 11, and the integrated management device 1
1, the management information collection devices A8 to C10 collect management information acquired and accumulated at the PDU level, or
In response to the notification from the management information collection devices A8 to C10, a plurality of local networks are integratedly managed. At this time, the management information collection devices A8 to C10
The management information is extracted from the PDU according to the collection condition and the operation condition of the management information designated by the integrated management device 11, provided to the integrated management device 11 according to a request from the integrated management device 11, and transmitted to each of the local networks A <b> 2 to C <b> 4. In this case, the integrated management apparatus 11 is directly notified of an event such as occurrence of a failure or a change in configuration information. In this way, the integrated management device 11 associates a plurality of local networks A2 to C4 individually managed by the network management devices (A5 to C7) using the standard protocol with the types of the network management devices (A5 to C7). It is possible to perform integrated management regardless of

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the configuration according to the present invention of the integrated network management system of the present invention. In this example, each network management device installed for each local network uses SNMP (Simple Network Management Protocol) as a standard protocol.
ocol).

In FIG. 1, 1 is an integrated network management system, 2 to 4 are local networks A to C, 5
7 are SNMP management devices A to C that manage the local networks A2 to C4, respectively, and 8 to 10 are management information collection devices that collect management information of the local networks A2 to C4 collected by the SNMP management devices A5 to C7. A ~
C and 11 are integrated management devices.

As described above, in the present embodiment, the management information collection devices A8 to C10 are provided together with the SNMP management devices A5 to C7 for each of the local networks A2 to C4. Then, each of the management information collection devices A8 to C10 is connected to the SNMP management device A in each of the local networks A2 to C4.
The network management information is extracted and stored from the protocol data unit (PDU) of the standard protocol used by 5 to C7, and is notified to the integrated management apparatus 11 through the interface shown in FIG. Integrated management device 11
Acquires management information from the management information collection devices A8 to C10, and integrally manages the local networks A2 to C4.

FIG. 2 is an explanatory diagram showing an example of an interface of the integrated network management system in FIG. In this example, the integrated management device 11 and the local network A2,
Further, it shows the relationship between a management information collection device A8 installed in the local network A2 and an SNMP management device A5 that manages the local network A2. That is, the SNMP management device A5 manages the local network A2 by SNMP, and the management information collection device A8 acquires management information exchanged between the SNMP management device A5 and the local network A2.

The integrated management device 11 acquires the management information collected by the management information collection device A8 by exchanging the information transfer request 21 and the information transfer response 22, and
The collection / operation condition instruction 23 and the collection / operation condition instruction response 24 allow the management information collection device A8 to collect management information required for managing the local network A2 and to accumulate or notify the collected data. The operating conditions are set in the management information collection device A8. Then, the information notified from the management information collection device A8 by the information notification 15 is accumulated in the integrated management device 11.

FIG. 3 is a block diagram showing a configuration example of the integrated management device in FIG. 1, and FIG. 4 is a block diagram showing a configuration example of the management information collecting device in FIG. First, in FIG. 3, reference numeral 11a denotes an integrated management application that performs integrated management of the plurality of local networks A2 to C4 shown in FIG. 1, 11b denotes management information collection conditions required by the integrated management application 11a, and FIG. A collection / operation condition instructing unit for instructing the devices A8 to C10, a communication interface unit 11c with the management information collecting devices A8 to C10 (described as a "management information collecting device interface unit" in the figure), and a reference numeral 11d in FIG. Access the management information collected by the management information collection devices A8 to C10 of the local networks A2 to C4, and accumulate the information in the integrated management device 11, or collect the management information collection devices A8 to C10
The information notified from the integrated management application 11a
The management information integrated management unit 11e is a management information integrated database that stores management information of the local networks A2 to C4 acquired by the management information integrated management unit 11d.

Next, in FIG. 4, reference numeral 8a denotes a communication P for collecting SNMP PDUs in the local network A2.
A DU acquisition unit, 8b is a communication interface unit for communicating with the integrated management device 11 (in the figure, described as “integrated management device interface unit”), and 8c is a collection condition indicated by the integrated management device 11 in FIG. A collection / operation condition management unit 8d held in a table, a PDU analysis unit 8d processes the SNMP PDU acquired by the communication PDU acquisition unit 8a based on the collection condition held in the collection / operation condition management unit 8c, and a PDU analysis unit 8e. The information matching the collection conditions in the analysis result of the analysis unit 8d is stored in the local network A as shown in the table of FIG.
The management information database 8f stores the management information of the local network A2 stored in the management information database 8e based on a request from the integrated management device 11 based on a request from the integrated management device 11. An information search processing unit provided to the integrated management device 11.

FIG. 5 is an explanatory diagram showing a specific example of a collection / operation condition management table held by the collection / operation condition management unit of the management information collection device in FIG. The collection / operation condition management table 50 includes the collection conditions 50d to 50i for extracting management information from the SNMP PDU and the management information collection device when management information that matches the collection conditions 50d to 50i is acquired. It has entries 50a to 50c that hold operation conditions 50j.

The collection conditions 50d to 50i correspond to the destination S
The IP address of the NMP management device A5 (described as “destination address” in the figure) and the PDU type (“PDUTyp” in the figure)
e)), and the contents of each field of the header constituting the SNMP PDU (“version”, “co” in the figure)
mm "), and a management object (Management Information Base: MI) stored in a management information variable section (Variable Binding List: VBL) in the PDU.
B) Object Identifier (OI)
D) and the value of this object identifier (OID). Some or all of these collection conditions 50d to 50i can be specified, and omitted conditions are ignored when extracting management information.

FIG. 6 is an explanatory diagram showing a specific example of a local network management information table stored in the management information database of the management information collection device in FIG. The management information tables 60 to 62 correspond to the SN in FIG.
It is created for each managed device of the MP management device A5. Reference numerals 60a to 60c in the figure denote entries holding pairs of indexes and values of management information in OID (object identifier) units of SNMP MIB. OID
(Object identifier) is set in the collection / operation condition management table 50 of FIG.

Next, the operation of the integrated network management system 1 of FIG. 1 composed of the management information collection devices A8 to C10 and the integrated management device 11 having such a configuration will be described. Note that the relationship among the integrated management device 11, the local networks A2 to C4, and the SNMP management devices A5 to C7 and the management information collection devices A8 to C10 installed therein is the same in all parts. A description will be given by taking only the SNMP management device A5 and the management information collection device A8 installed in the local network A2 shown in FIG. 2 as an example.

The integrated management device 11 having the configuration shown in FIG. 3 is a condition for the management information collection device A8 to collect management information required by the integrated management application 11a for managing a plurality of local networks as an MIB value ( FIG.
Are set in the management information collection device A8 from the collection / operation condition instructing unit 11b through the communication interface unit 11c.

This operation corresponds to the collection / operation condition instruction 2 shown in FIG.
3 and the collection / operation condition instruction response 24,
The instructed collection conditions and operation conditions are also notified to the management information integrated management unit 11d. The management information integrated management unit 11d manages the type of management information collected and accumulated by the management information collection device A8 based on the collection conditions and the operation conditions, and also manages the management information via the communication interface unit 11c. The management information of the local network A2 collected by the collection device A8 is periodically collected and stored in the management information integrated database 11e.

Further, the management information integrated management section 11d
Based on the information transfer request 21 and the information transfer response 22,
At the request of the integrated management application 11a, the management information collected by the management information collection device A8 can also be acquired. Further, the management information integrated management unit 11d transmits the information notified from the management information collection device A8 (the information notification 2 in FIG. 2).
5) is notified to the integrated management application 11a and stored in the management information integrated database 11e. The integrated management application 11a includes the management information integrated management unit 1
Using the management information collected or notified from the management information collection device A8 by 1d, a plurality of local networks are integratedly managed.

In the management information collection device A8 having the configuration shown in FIG. 4, the integrated management device 1 is transmitted through the communication interface 8b.
The collection / operation condition management unit 8c manages the collection condition and the operation condition specified from 1. In the PDU analysis unit 8d, the communication PDU acquired by the communication PDU acquisition unit 8a is transmitted.
Then, only SNMP PDUs are extracted, and management information is extracted and processing of the extracted management information is executed based on the collection conditions and operation conditions set in the collection / operation condition management table 50 of FIG.

The destination information of the IP header part of the obtained PDU is compared with the IP address 50d of the SNMP management apparatus A5 set in the collection / operation condition management table 50, and only the PDU directed to the SNMP management apparatus A5 is compared. Extract. Next, the collection conditions 50d to 50i set in the collection / operation condition management table 50 are compared with the components in the SNMP PDU. When the PDU includes a plurality of VBLs, the OID and the value are compared for each. As a result, the collection conditions 50d-50 of the entries 50a-50c set in the collection / operation condition management table 50
leaving only PDUs containing management information that exactly matches i,
Other PDUs are discarded.

The collection / operation condition management table 50
A PDU including management information that matches the collection conditions 50d to 50i of the entries 50a to 50c of this entry 50a
The processing for the management information is performed based on the operation conditions 50j designated to .about.50c. As described above, among the PDUs that are left in the management information collection device A8 in accordance with the collection conditions, the PDUs that need to be notified are determined from the IP header portion of the PDU, that is, the transmission source of the PDU, that is, the SNMP management device. The IP address of the device to be managed in A5 is extracted.

The PDU type from the managed device in the local network A2 is, for example, “GetResponse”.
In the case of "se", the source IP address and the contents of the VBL extracted above are notified to the integrated management apparatus 11, and in the case of "TRAP", the source IP address and the contents of the VBL are notified. "Enterprise", "agent-add
r "," generic-trap "," specific-trap "," time-s
The information of each field of “TRAP PDU” of “tamp” is notified to the integrated management device 11 of FIG.

The integrated management device 11 receives this notification,
It monitors events of the local network A2 managed by the NMP management device A5 and changes in management information. PDUs that do not require notification processing are discarded. Among the PDUs that have been matched with the collection conditions and are left in the management information collection device A8 and have undergone notification-related processing, PDUs containing management information that requires storage processing are sent from the IP header part of the PDU.
The source of this PDU, that is, the IP address of the managed device of the SNMP management device A5 is extracted.

In the management information database 8e, for each extracted source IP, that is, for each managed device of the SNMP management device A5, the management information tables 60 to 6 in FIG.
Hold 2. When the management information tables 60 to 62 related to the managed device corresponding to the extracted IP address already exist, each entry 60a to 60
60c and the VID in the SNMP PDU
The OID of the BL is compared, and a pair of an index and a value is stored in the matched entry.

At this time, if a combination of the index and the value already exists in this entry, the index and the value are overwritten. If not, a new combination of the index and the value is stored in the entry. Add. Also,
The index and value combinations stored in the management information tables 60 to 62 and the management information tables 60 to 62 relating to the managed devices are automatically deleted when none of them is updated for a certain period of time.

By the storage processing of the management information, the management information database 8e of the management information collection device A8 stores
The latest management information of the managed device of the NMP management device A5 can be held. On the other hand, when the management information table regarding the managed device corresponding to the extracted IP address does not exist in the management information tables 60 to 62, a new management information table regarding the managed device is generated. The management information in the PDU is stored in an entry of the generated table where the OID matches. By this management information table generation processing, the management information collection device A8
Can automatically find all managed devices managed by the SNMP management device A5.

Information search processing unit 8 of management information collection device A8
f searches for the management information of the SNMP management device A5 accumulated by the above operation in response to a request from the integrated management device 11 of FIG. 2, and collects the management information collected by the integrated management device 11 via the communication interface unit 8b. provide. The search key is a managed device, an OID, an OID and an index, and a combination thereof.
The OID, index, and value of the MIB are provided to the integrated management apparatus 11. Also, the management information database 8e
It is also possible to acquire the management information of all the devices to be managed, which is held by the device.

In the integrated management device 11 shown in FIG. 3, the information stored in the SNMP management devices A5 to C7 installed in the local networks A2 to C4 is managed by the management information integrated management unit 11d acquiring the above management information. The integrated management is performed by periodically collecting the information in the information integrated database 11e. The collection / operation condition management table 5 shown in FIG.
Operation condition 50j described in 0 entries 50a to 50c
If both notification and accumulation are specified in the process of, both processes are performed.

The operation of the management information collecting device 8 in the above processing will be described with reference to FIG. FIG. 7 is a flowchart illustrating an operation example of the management information collection device in FIG. 1 according to the present invention. This example shows the operation of the management information collection device A8 having the configuration shown in FIG.
In the case where management information is extracted from the communication PDU acquired from the local network A2 based on the contents of the collection and operation conditions held by the collection and operation condition management unit 8c, and processing such as accumulation and notification is performed. It is a flow.

That is, the management information collection device A8 shown in FIG.
First, the communication PDU is obtained by the communication PDU obtaining unit 8a (step 701). Then, the PDU analyzer 8d
Thereby, only the SNMP PDU is extracted from the communication PDU acquired by the communication PDU acquiring unit 8a (step 70).
2). Note that PDUs other than SNMP are discarded (step 707). For SNMP PDUs,
Based on the collection conditions and operation conditions set in the operation condition management table 50 (step 703), management information is extracted and processing of the extracted management information is executed as follows. .

First, the destination information of the IP header portion of the obtained PDU is compared with the IP address 50d of the SNMP management device A5 set in the collection / operation condition management table 50, and only the PDU directed to the SNMP management device A5 is compared. Is extracted. Next, the collection conditions 50d to 50i set in the collection / operation condition management table 50 are compared with the components in the SNMP PDU.

When the PDU includes a plurality of VBLs, the OID and the value are compared for each VBL. As a result, the 5 set in the collection / operation condition management table 50
0a to 50c, leaving only PDUs containing management information that completely match the collection conditions 50d to 50i, and leaving other PDUs
Is discarded (step 707).

As a result of the comparison with the collection condition in step 703, the collection / operation condition management table 5
0 entries 50a to 50c collection conditions 50d to 50i
Is processed based on the operation condition 50j specified in this entry. That is, it is determined whether or not notification processing of each PDU left in the management information collection device A8 in accordance with the collection condition is necessary (step 704).

If notification processing is necessary, the IP address of the transmission source of this PDU (device to be managed by the SNMP management device A5) is extracted from the IP header portion of the PDU, and the transmission source IP address and the contents of the VBL are extracted. , TRAP PDU
Is notified to the integrated management apparatus 11 (step 705). The integrated management device 11 monitors the event of the local network A2 managed by the SNMP management device A5 and a change in the management information based on the notification.

Next, the data is left in the management information collection device A8 in accordance with the collection conditions in step 703 described above,
It is determined whether or not the accumulation process of each PDU after the process related to the notification of 04 is necessary (step 706). PDUs that do not require storage processing are discarded (step 707).
For PDUs containing management information that requires storage,
From the IP header part of the DU, the source of this PDU (SNM)
The IP address of the managed device of the P management device A5) is extracted, and the management information tables 60 to 62 are stored in the management information database 8e for each extracted source IP.
At this time, it is determined whether or not the management information tables 60 to 62 related to the managed device corresponding to the extracted IP address already exist (step 708).

If present, the OID held in each entry 60a-60c in the table and the SNMP PD
The OID of the VBL in U is compared, and a pair of an index and a value is stored in the matched entry (step 71).
0). At this time, if a combination of the index and the value already exists in this entry, the index and the value are overwritten. Otherwise, the combination of the index and the value is newly written in the entry. to add.

If there is no management information table for the managed device, a new management information table for the managed device is generated (step 709).
The management information in the PDU is stored in an entry of the generated table where the OID matches (step 710). By generating the management information table in this way, the management information collection device A8 can automatically discover all the devices to be managed managed by the SNMP management device A5.

As described above with reference to FIGS. 1 to 7, in the integrated network management system of this embodiment, a network management device (SNMP) using a standard protocol is used.
The management information collection devices A8 to C10 installed on the plurality of local networks A2 to C4 managed by the management devices A5 to C7) are network management devices (A5 to C7).
The management information necessary for managing the network is extracted, stored, and notified from the PDU of the management communication for 7), and the integrated management apparatus 11 uses the information.

Thus, for each different type of network management device (A5 to C7) installed in each of the local networks A2 to C4, the management information stored in the network management device (A5 to C7) is changed. It is possible to integrally manage a plurality of local networks A2 to C4 that have already been managed by the network management devices (A5 to C7) without individually preparing the access function of the network management device 11 and the function of transferring management information to the integrated management device 11. Will be possible. The present invention is not limited to the embodiment described with reference to FIGS. 1 to 7, and can be variously modified without departing from the gist thereof.

[0045]

According to the present invention, for each type of network management device, a function of accessing management information held inside the network management device and a function of transferring management information to the integrated management device are prepared. Eliminates the need to be affected by changes in the specifications of network management devices already installed in the local network, and efficiently performs unified management of integrated management devices for multiple local networks that already have network management devices Is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a configuration according to the present invention of an integrated network management system of the present invention.

FIG. 2 is an explanatory diagram showing an example of an interface of the integrated network management system in FIG. 1;

FIG. 3 is a block diagram illustrating a configuration example of an integrated management device in FIG. 1;

FIG. 4 is a block diagram illustrating a configuration example of a management information collection device in FIG. 1;

FIG. 5 is an explanatory diagram showing a specific example of a collection / operation condition management table held by a collection / operation condition management unit of the management information collection device in FIG. 4;

FIG. 6 is an explanatory diagram showing a specific example of a local network management information table stored in a management information database of the management information collection device in FIG. 4;

FIG. 7 is a flowchart showing an operation example of the management information collection device in FIG. 1 according to the present invention;

FIG. 8 is a block diagram showing a configuration example of a conventional integrated network management system.

[Explanation of symbols]

1: Integrated network management system, 2 to 4: Local networks A to C, 5 to 7: SNMP management devices A to
C, 8 to 10: management information collection devices A to C, 8a: communication P
DU acquisition unit, 8b: communication interface unit, 8c: collection / operation condition management unit, 8d: PDU analysis unit, 8e: management information database, 8f: information search processing unit, 11: integrated management device, 11a: integrated management application, 11b:
Collection / operation condition instructing unit, 11c: communication interface unit, 11d: management information integrated management unit, 11e: management information integrated database, 21: upper dirty spot itch feeding, 22: non-transfer response, 23: collection / operation condition instruction , 24: collection / operation condition instruction response, 25: information notification, 50: collection / operation condition management table, 50a to 50c: entry, 50d to
50i: collection condition, 50j: operation condition, 60 to 62: management information table, 60a to 60c: entry, 80: integrated management device, 80a: integrated management application, 80
b: management device interface unit, 80c: management information database, 81, 82: network management devices A, B,
81a, 82a: Adapter programs A, B, 81b,
82b: Network management application programs A, B, 8
1c, 82c: Databases A, B, 83, 84: Local networks A, B.

Claims (3)

[Claims] An integrated network management system for integrating and managing a plurality of local networks each having a network management device using a standard protocol, wherein the integrated network management system is provided separately for each of the plurality of local networks and has the same local A plurality of management information collection devices that collect data (management information) addressed to the network management device in the network, and each of the plurality of management information collection devices collects data by communication with the plurality of management information collection devices. An integrated management device that acquires the management information and integrally manages the plurality of local networks. 2. The integrated network management system according to claim 1, wherein the management information collection device communicates with the integrated management device, and the communication device is instructed by the integrated management device via the communication device. Condition receiving means for receiving a collection condition of the management information and an operation condition when the management information matching the collection condition is collected, a data obtaining means for obtaining data destined for the network management device, and the data obtaining means The data (management information) corresponding to the collection condition and the device (management target device) that transmitted the data are determined from the data acquired in step 2, and the management information for each management target device is set as the operation condition. An integrated network management system, comprising: a data providing unit that provides the integrated management device with the integrated management device via the communication unit. 3. The integrated network management system according to claim 1, wherein said integrated management device communicates with said management information collection device, and said communication device communicates with said management information collection device via said communication means. Instructing means for instructing the management information collecting apparatus on a collection condition of the management information and an operation condition when extracting the management information matching the collection condition, and Storage means for acquiring and storing the management information collected by the management information collection device via the communication means; and management means for integrally managing the plurality of local networks based on the management information stored in the storage means. An integrated network management system, comprising: