JP5312124B2 - Network management method and system, and network management system program - Google Patents

Description

  The present invention uses a simple network management protocol (hereinafter referred to as SNMP) to enable handling of real values when acquiring SNMP agent device information from an SNMP manager device of a monitoring server. The present invention relates to a management method and system, and a network management system program.

  Conventionally, when acquiring information on a monitoring target server or an SNMP agent device provided in a system device from an SNMP manager device provided in a monitoring server connected via a network using SNMP, an SNMP request is sent from the SNMP manager device to the SNMP agent device. And the information held or acquired by the SNMP agent device is returned as a response, and the SNMP manager device acquires and stores the information. The SNMP agent device holds data relating to its own state in the form of a database, and its tree structure data is called MIB (Managment Information Base), all nodes are uniquely numbered, and a numeric string of each node. The unique identifier consisting of is called an OID (Object Identifier).

  As a well-known technique related to such information acquisition using SNMP, for example, a management information transmitting apparatus and device management that can process each management information in one communication by handling a plurality of management information at once. Network management system and method, network management device, method, and program capable of efficiently performing operation information analysis of apparatus and device management system (see Patent Document 1), business system using a plurality of managed devices And a recording medium (see Patent Document 2), a device management system, a management server, and a computer-readable recording medium that can grasp all of a plurality of abnormal phenomena occurring in a managed device by a browser of a client device (see Patent Document 3) SNMP is the management protocol, and non-SNMP management targets have the same knowledge as SNMP management targets. NETWORK MANAGEMENT DEVICE AND METHOD PROVIDING DISPLAY METHOD (see Patent Document 4), NETWORK MANAGEMENT METHOD AND NETWORK MANAGEMENT SYSTEM capable of diagnosing and displaying whether the number of connected terminals is appropriate as the network status from the value of the acquired network management information (See Patent Document 5).

  In addition, a network management information collection method for reducing the collection amount and the collection time of MIBs transferred between the network management device and the managed node, a network management device used for the method, and a managed node (see Patent Document 6), A network management system comprising a manager device and an agent device that performs network management using SNMP and its management method (see Patent Document 7), a sub-manager with a simple configuration, and a large scale based on SNMP of the IAB management standard Hierarchical network management system that hierarchically manages communication networks (see Patent Document 8), when a managed device is newly installed in the system, it does not go through another device and is used as a management terminal Implement definition file for extended MIB of newly installed managed device In addition, an in-system centralized management system that can manage the device status of managed devices (see Patent Document 9), enables setting confirmation between a management station defined by SNMP and a managed node, Examples thereof include a network management method and a network management system that operate reliably (see Patent Document 10), an SNMP agent device that flexibly controls access to an MIB (see Patent Document 11), and the like.

JP 2003-150466 A JP 2003-99340 A JP 2000-347976 A Japanese Patent Laid-Open No. 10-4407 JP 2000-22714 A JP 2000-66978 A JP 2000-134203 A JP 2002-140240 A JP 2006-140671 A JP 2003-177777 A JP 2007-188298 A

  The information acquisition technology using SNMP disclosed in each of the above patent documents is, for example, as described in Patent Document 1, the data that can be acquired is a character string and an integer value. Although only integer values are acceptable if only value data is handled, among the information that can be obtained from the SNMP agent device, if it is intended for real value information that is more convenient to express including a decimal point such as temperature, There is a problem that it cannot be handled.

  The present invention has been made to solve such problems, and its technical problem (objective) is to effectively collect real-valued performance information that can be acquired from the SNMP agent device by the SNMP manager device through SNMP. A network management method and system, and a network management system program.

To solve the above SL technical problems, first means of the present invention, a network management method for acquiring system information from the SNMP agent device using SNMP from SNMP manager apparatus connected via a network to each other, the SNMP manager An SNMP request packet created by acquiring an MIB ID and an IP address for MIB collection from an MIB collection / reduction information definition database provided in the own device having an SNMP request for acquiring a specific MIB from the device to the SNMP agent device SNMP request step performed by transmitting the command, and a command that becomes the system information from the MIB acquisition / conversion information definition database provided in the own device , using the MIB ID acquired by the SNMP agent device that received the SNMP request as a key And strange To real values obtained as the response value of the specific MIB that acquires a value indicating the response value by the execution of the command, SNMP response obtained by integer multiplied by a multiple of 10 which is predefined indicates the conversion values Response to the SNMP manager as an SNMP response packet , and the SNMP manager apparatus that has received the SNMP response packet acquires the MIB ID included in the SNMP response packet and corresponds to the MIB ID and characterized in that it has a response value conversion step of recording is converted into a real value of the SNMP response I divided by a multiple of predefined 10 acquired from the MIB collection / reduction information for defining the database as a reducing information To do.

The second means of the present invention includes an SNMP manager device and the SNMP agent apparatus connected via a network to each other, in a network management system to obtain system information from the SNMP agent device from the SNMP manager device using SNMP The SNMP manager device acquires the MIB ID and IP address for MIB collection from the MIB collection / reduction information definition database provided in the device itself for an SNMP request for acquiring a specific MIB to the SNMP agent device. has a row cormorants SNMP request function by sending an SNMP request packet created, the SNMP agent apparatus, the key ID of the MIB acquired in response to receiving the SNMP request, MIB acquired / conversion information device itself comprising Definition To real values obtained as the response value of the specific MIB showing a response value by the execution of the command to get the commands and conversion value serving as the system information from the database, a multiple of 10 predefined indicates the conversion values the multiplied have MIB response function to reply to the SNMP manager device an SNMP response obtained by integer as SNMP response packet, wherein the SNMP manager device receives the SNMP reply packet then, included in the SNMP reply packet and acquires the ID of the MIB is converted into a real I the MIB collection / 10 dividing the value of the SNMP response in multiples of a previously defined obtained from the definition database for reducing information as reducing information corresponding to the ID of the MIB It has a response value conversion function for recording. In this network management system, it is preferable that the SNMP manager device is provided in a monitoring server and the SNMP agent device is provided in a monitoring target server or system device.

Furthermore , the third means of the present invention is applied to a network management system including a monitoring server and a monitoring target server or system equipment connected to each other via a network, and the monitoring target is monitored using SNMP from the monitoring server. A network management system program for acquiring system information from a server or the system device, wherein the device includes an SNMP request for acquiring a specific MIB from the monitoring server to the monitoring target server or the system device. A procedure of an SNMP request step performed by transmitting an SNMP request packet created by acquiring an MIB ID and an IP address for MIB collection from the MIB collection / reduction information definition database, and the monitored server that has received the SNMP request or the MI of the system equipment is acquired Acquiring the ID as a key, as the response value of a particular MIB showing the response value to obtain the command and conversion value serving as the system information from the definition database for MIB acquired / conversion information device itself equipped by the execution of the command An SNMP response step of returning an SNMP response obtained by multiplying the real value obtained by multiplying a predefined multiple of 10 indicating the conversion value to an integer as an SNMP response packet to the monitoring server, and the SNMP response packet The received monitoring server acquires the MIB ID included in the SNMP response packet, and obtains the return information corresponding to the MIB ID from the MIB collection / reduction information definition database as a multiple of 10 defined in advance. response value conversion step of recording is converted into a real you assign a value of the SNMP response And forward, for, with the Motasa to the monitoring server, and a program for SNMP manager to perform the steps of the procedure and the response value conversion step of the SNMP request step, is Motasa to the monitored server or the system equipment And an SNMP agent program for executing the procedure of the MIB response step.

  According to the present invention, real-valued performance information that can be acquired from an SNMP agent device (monitoring target server or system device) can be effectively collected and recorded by the SNMP manager device (monitoring server) via SNMP. As a result, even if the information that can be acquired from the SNMP agent device includes real-value information that is more convenient to express including the decimal point such as temperature, it can be easily handled.

It is the figure which showed schematic structure of the network management system which concerns on Example 1 of this invention. FIG. 2 is a functional block diagram showing detailed configurations of a monitoring server and a monitoring target server provided in the network management system shown in FIG. 1. FIG. 3 is a flowchart showing MIB collection / reduction operation processing in an SNMP manager device provided in the monitoring server shown in FIG. 2. FIG. 3 is a flowchart showing MIB acquisition / conversion operation processing in an SNMP agent device provided in the monitoring target server shown in FIG. FIG. 3 illustrates the file configuration of the MIB collection / reduction information definition file DB provided in the SNMP manager device of the monitoring server shown in FIG. 2, where (a) relates to item descriptions and (b) relates to data examples. . FIG. 3 illustrates the file configuration of the MIB acquisition / conversion information definition file DB provided in the SNMP agent device of the monitoring target server shown in FIG. 2, where (a) relates to item descriptions, and (b) relates to data examples. is there. FIG. 3 illustrates a file configuration of a collection result file DB provided in the SNMP manager device of the monitoring server illustrated in FIG. 2, where (a) relates to an item description, and (b) relates to a data example.

  Hereinafter, a network management method and system and a network management system program of the present invention will be described in detail with reference to the drawings.

First, a technical outline of the network management method of the present invention will be briefly described. In the network management method of the present invention, when acquiring system information from an SNMP agent device using SNMP from SNMP manager devices connected to each other via a network, an SNMP for acquiring a specific MIB from the SNMP manager device to the SNMP agent device. An SNMP request step for transmitting an SNMP request packet created by acquiring an MIB ID and IP address for MIB collection from the MIB collection / reduction information definition database provided in the own device, and an SNMP having received the SNMP request A response of a specific MIB indicating a response value obtained by executing a command by acquiring a command and conversion value as system information from the MIB acquisition / conversion information definition database provided in the own device using the MIB ID acquired by the agent device as a key value To real values acquired by the MIB response step of returning to the SNMP manager SNMP response obtained by integer multiplied by a multiple of predefined 10 shows the conversion value as an SNMP reply packet, receiving the SNMP response packet SNMP manager device dividing the value of SNMP responses at multiples of 10 predefined obtained from the definition database for MIB collection / reduction information as a reducing information to obtain the ID of the MIB corresponding to the ID of the MIB included in the SNMP reply packet And a response value conversion step for converting the result into a real number and recording it.

  According to this method, real-valued performance information that can be acquired from the SNMP agent device can be effectively collected and recorded by the SNMP manager device via SNMP. Thereby, even if the information that can be acquired from the SNMP agent device includes real-valued information that is more convenient to express including the decimal point such as temperature, it can be easily handled.

  FIG. 1 is a diagram showing a schematic configuration of a network management system according to the first embodiment of the present invention. This network management system is configured by connecting a monitoring server 10 for collecting system information using SNMP and a monitoring target server 20 to be collected through a network 30.

  FIG. 2 is a functional block diagram showing detailed configurations of the monitoring server 10 and the monitoring target server 20 provided in the network management system. Incidentally, the monitoring server 10 and the monitoring target server 20 here are provided with a CPU, a main memory, a storage device such as an HDD, a display device, and an input / output device such as a keyboard mouse, as is well known. It is composed.

  The monitoring server 10 includes an SNMP manager device 110 that collects system information from the monitoring target server 20 using SNMP.

  The SNMP manager apparatus 110 transmits an SNMP request packet 131 as a process of performing SNMP communication with an MIB collection / reduction information definition file DB (database) 113 that accumulates file data defining return information for the MIB to be collected. The SNMP processing unit 112 that receives the SNMP response packet 132, the collection result file DB (database) 114 that accumulates the file data of the collection result, and the MIB collection / reduction information definition file DB (database) 113 An SNMP request packet 131 is issued to the SNMP agent device 120 on the monitored server device 20 via the SNMP processing unit 112 based on the return information, and is received by the SNMP processing unit 112 from the SNMP agent device 120. And a MIB collection / reduction processing unit 111 that performs a process of converting the response value (integer value) of the SNMP response packet 132 into a real value and accumulating and recording it in the collection result file DB (database) 114. .

  The MIB collection / reduction processing unit 111 acquires the IP address to be collected and the type of system information to be collected from the MIB collection / reduction information definition file DB (database) 113, and issues an SNMP-Get request. Process.

  The monitoring target server 20 receives the SNMP request packet 131 from the SNMP manager device 110 by collecting the OS command unit 124 that issues the OS command and the OS command, collects system information, and returns an SNMP response packet 132. An SNMP agent device 120.

  The SNMP agent device 120 includes a MIB acquisition / conversion information definition file DB (database) 123 that stores file data defining conversion information for the MIB to be acquired, and transmission of an SNMP response packet 132 as a process of performing SNMP communication. The SNMP processing unit 122 that receives the SNMP request packet 131, and the system information is acquired from the MIB acquisition / conversion information definition file DB (database) 123 when the SNMP processing unit 122 receives the SNMP request packet 131 by executing an OS command. In addition, an MIB acquisition / conversion processing unit 121 that performs processing for converting the acquired real value into an integer value and responding (replying) to the SNMP manager device 110 via the SNMP processing unit 122 as an SNMP response packet 132; It is equipped with It is.

  The operation of the SNMP manager device 110 (MIB acquisition / conversion processing unit 121) here has been described as being performed by executing an OS command issued from the OS command unit 124, but a similar operation is obtained. Other methods may be applied if possible.

  In short, in this network management system, the sequence (procedure) in the operation process is that the SNMP manager device 110 makes an SNMP request (by the SNMP request packet 131) for acquiring a specific MIB to the SNMP agent device 120, and the SNMP agent. Based on the system information collected in response to the reception of the SNMP request by the device 120, an SNMP response (for example, obtained by multiplying a real value acquired as a response value of a specific MIB by multiplying by a predetermined multiple of 10, for example) (With SNMP response packet 132) to SNMP manager device 110. Further, after this, the SNMP manager apparatus 110 has a function of dividing a response value of a specific MIB by a predetermined multiple of 10, for example, in response to reception of the SNMP response, converting it to a real number, and recording it.

  FIG. 3 is a flowchart showing MIB collection / reduction operation processing in the SNMP manager device 110 provided in the monitoring server 10.

(1) In the MIB collection / reduction operation process, the MIB collection / reduction processing unit 111 acquires a MIB ID (OID) to be collected as information necessary for collection from the MIB collection / reduction information definition file DB 113, and then continues. Get the IP address to be collected. The information to be acquired includes the collection destination IP address, the MIB ID among the item names in the item description of the file configuration of the MIB collection / reduction information definition file DB 113 shown in FIG. 5A [Of course, in FIG. The case of any of the data examples shown can be exemplified] (steps S1, S2).

(2) Also, the MIB collection / reduction processing unit 111 creates an SNMP request packet 131 from the acquired MIB ID (OID) and IP address, and the SNMP request packet 131 created via the SNMP processing unit 112 is monitored. It transmits to the SNMP agent device 120 on 20 (steps S3 and S4).

(3) Furthermore, the MIB collection / reduction processing unit 111 determines whether or not there is a response from the SNMP agent device 120 on the monitoring target server 20 via the SNMP processing unit 112. If there is no response, the MIB collection / reduction processing unit 111 performs processing for a certain period of time. After performing the WAIT that waits for the response, the process returns and waits for a response, but if there is a response, the SNMP response packet 132 is received (steps S5, S6, and S7).

(4) Therefore, the MIB collection / reduction processing unit 111 acquires the MIB ID (OID) and the integer (response) value from the SNMP response packet 132, and information for reducing the acquired (response) value to a real number. Is acquired from the MIB collection / reduction information definition file DB 113 using the MIB ID (OID) acquired from the response packet 132 as a key. The information to be acquired is the return value of the item names in the item description of the file structure of the MIB collection / reduction information definition file DB 113 shown in FIG. 5A [Of course, the data example shown in FIG. The case of either one can be exemplified] (steps S8 and S9).

(5) Subsequently, the MIB collection / reduction processing unit 111 converts the (response) value of the integer value acquired from the response packet 132 to a multiple of 10 that is the reduction value acquired from the MIB collection / reduction information definition file DB 113 (10 By dividing by ^ n), the realized value is written in the collection result file DB 114. The information to be written is an item described in the item description of the collection result file DB 114 in FIG. 7A [Of course, it can be exemplified as any of the data examples shown in FIG. 7B] (steps) S10, S11).

  FIG. 4 is a flowchart showing MIB acquisition / conversion operation processing in the SNMP agent device 120 provided in the monitoring target server 20.

(1) In the MIB acquisition / conversion operation process, the MIB acquisition / conversion processing unit 121 receives system information from the SNMP manager device 110 (specifically, the SNMP processing unit 112) on the monitoring server 10 via the SNMP processing unit 122. Whether or not an acquisition request has been received is determined by determining whether or not there is an acquisition request. If there is no acquisition request as a result of the determination, the process proceeds to a WAIT process that waits for a certain period of time. Returning and waiting for an acquisition request, if there is an acquisition request, an SNMP request packet 131 is received (steps S21, S22, S23).

(2) Next, after acquiring the MIB ID (OID) for acquisition from the SNMP request packet 131, the MIB acquisition / conversion processing unit 121 checks whether the acquired MIB ID (OID) is a processing target (step S24). , S25).

(3) Specifically, in this check, the MIB ID (OID) acquired from the SNMP request packet 131 is the item name in the item description of the file structure of the MIB acquisition / conversion information definition file DB123 in FIG. It is determined whether or not there is something that matches the value of MIB ID (OID) [of course, it can be exemplified by any of the data examples shown in FIG. 6B] Or not (step S26).

(4) If there is no match as a result of this determination (step S26), an error value is set in the SNMP response packet 132 as being out of target, and then the SNMP manager device 110 on the monitoring server 10 via the SNMP processing unit 122. An SNMP response packet 132 indicating that fact is transmitted to the SNMP processing unit 112 (specifically, the SNMP processing unit 112), and the operation ends (steps S27 and S36).

(5) On the other hand, if there is a match as a result of the determination (step S26), a command to be executed from the MIB acquisition / conversion information definition file DB 123 using the MIB ID (OID) acquired from the SNMP request packet 131 as a key. Conversion, which is information for converting the response value of the command from the MIB acquisition / conversion information definition file DB 123 into an integer using the MIB ID (OID) acquired from the SNMP request packet 131 as a key. Get the value. This conversion value is the conversion value of the item names in the item description of the file structure of the MIB acquisition / conversion information definition file DB 123 in FIG. 6A [Of course, any of the data examples shown in FIG. Can be exemplified] (steps S28 and S29).

(6) Thereafter, after executing the OS command as the command information to be executed acquired from the OS command unit 124, it is determined whether or not the command execution is successful based on the return value of the command or the like (steps S30 and S31). ).

(7) If execution is unsuccessful as a result of this determination (step S31), an error value is set in the SNMP response packet 132, and then the SNMP manager device 110 on the monitoring server 10 (specifically, via the SNMP processing unit 122) Then, an SNMP response packet 132 indicating the fact is transmitted to the SNMP processing unit 112), and the operation is terminated (steps S32 and S36).

(8) On the other hand, if the execution is successful as a result of the determination (step S31), the response value of the command is acquired, and then the response value (real value) of the command is obtained from the MIB acquisition / conversion information definition file DB123. The value used for the obtained conversion (10 ^ n which is a multiple of 10 as the conversion value) is multiplied to make an integer (steps S33 and S34).

(9) Finally, a value converted to an integer (value converted to an integer) is set in the SNMP response packet 132, and then the SNMP manager device 110 on the monitoring server 10 (specifically, via the SNMP processing unit 122) Transmits an SNMP response packet 132 indicating that to the SNMP processing unit 112), and ends the operation (steps S35 and S36).

  The network management system according to the first embodiment described above (shown in FIG. 1) has been described as a simple configuration in which one monitoring server 10 and one monitoring target server 20 are connected via the network 30. The monitored server 20 may be replaced with a system device, and a plurality of these devices may be installed.

  In addition, the operation processing of the SNMP manager device 110 included in the monitoring server 10 and the SNMP agent device 120 included in the monitoring target server 20 in the network management system according to the first embodiment described above is a program having information on the above-described operation processing. Can be read and executed.

  More specifically, the network management system program for acquiring system information from the monitoring target server 20 or system device using SNMP from the monitoring server 10 is the monitoring target server 20 or system device. An SNMP request step for making an SNMP request for acquiring a specific MIB, and a real value acquired as a response value of the specific MIB based on the system information collected by the monitored server 20 or system device that has received the SNMP request On the other hand, an MIB response step for returning an SNMP response obtained by multiplying a predetermined multiple of 10 to an integer to the monitoring server 10 and a specific MIB in a multiple of 10 defined by the monitoring server that has received the SNMP response. A response value conversion step that divides the response value, converts it to a real number, and records it. It assumes Rukoto.

  Based on this premise, the SNMP server program is executed by causing the monitoring server 10 to have the SNMP server program for executing the SNMP request step and the response value conversion step, and the MIB response step is executed. The monitoring target server 20 or system device may be held and executed.

DESCRIPTION OF SYMBOLS 10 Monitoring server 20 Monitoring object server 30 Network 110 SNMP manager apparatus 111 MIB collection / reduction processing part 112, 122 SNMP processing part 113 MIB collection / reduction information definition file DB (first database)
114 Collection result file DB (third database)
120 SNMP Agent Device 121 MIB Acquisition / Conversion Processing Unit 123 MIB Acquisition / Conversion Information Definition File DB (Second Database)
124 OS command part 131 SNMP request packet 132 SNMP response packet

Claims (4)

In a network management method for acquiring system information from an SNMP agent device using SNMP from SNMP manager devices connected to each other via a network, the SNMP manager device automatically sends an SNMP request for acquiring a specific MIB from the SNMP agent device to the SNMP agent device. An SNMP request step for transmitting an SNMP request packet created by acquiring an MIB ID and an IP address for MIB collection from an MIB collection / reduction information definition database provided in the apparatus, and the SNMP agent that has received the SNMP request as a key ID of the MIB which device has acquired, before showing a response value by the execution of the command to get the commands and conversion value serving as the system information from the definition database for MIB acquired / conversion information device itself comprising To real values obtained as the response value of a particular MIB, and MIB response step of returning to the SNMP manager SNMP response obtained by integer multiplied by a multiple of predefined 10 shows the converted value as the SNMP reply packet the SNMP response packet the SNMP manager device receiving is acquired from the definition database for MIB collection / reduction information as a reducing information to obtain the ID of the MIB included in the SNMP reply packet corresponding to the ID of the MIB network management method characterized by a multiple of predefined 10 having a response value conversion step of recording is converted into a real I assign a value of the SNMP response. In a network management system that includes an SNMP manager device and an SNMP agent device that are connected to each other via a network, and that uses SNMP to obtain system information from the SNMP agent device, the SNMP manager device includes the SNMP agent device. It intends line by sending an SNMP request packet created by acquiring the ID and IP address of the MIB for MIB collected from the definition database for MIB collection / reduction information to SNMP requests comprises the own apparatus to obtain a specific MIB to has a SNMP request function, the SNMP agent apparatus, said a key ID of the MIB acquired in response to receiving the SNMP request, the system definition database for MIB acquired / conversion information device itself comprising To real values obtained as the response value of the specific MIB which acquires the command and conversion value as a broadcast indicating the response value by the execution of the command, the integer multiplied by the multiple of the predefined 10 shows the conversion values turned into an SNMP response obtained has the MIB response function to reply to the SNMP manager device as SNMP response packet, the SNMP manager device receives the SNMP reply packet Then, the ID of the MIB included in the SNMP reply packet acquires and response value to be recorded is converted into a real I divided the value of the multiple of 10 predefined obtained from the definition database for MIB collection / reduction information SNMP response as a reduction information corresponding to the ID of the MIB A network management system characterized by having a conversion function .   3. The network management system according to claim 2, wherein the SNMP manager device is provided in a monitoring server, and the SNMP agent device is provided in a monitoring target server or system device. Applied to a network management system including a monitoring server and a monitoring target server or system device connected to each other via a network, and acquires system information from the monitoring target server or the system device using SNMP from the monitoring server A network management system program for collecting MIBs from a MIB collection / reduction information definition database in which the device has an SNMP request for acquiring a specific MIB from the monitoring server to the monitoring target server or the system device ID of the MIB and procedures SNMP request step that acquires the ID and IP address of the MIB performed by sending an SNMP request packet created, the monitored server or to the system equipment has received the SNMP request acquired use as the key, the self-device To real values obtained as the response value of the specific MIB from definition database for MIB acquired / conversion information to obtain the command and conversion value serving as the system information indicating the response value by the execution of the command with, the conversion value and procedures MIB response step of returning to the monitoring server as SNMP reply packet SNMP response obtained by integer multiplied by 10 fold of previously defined show and the monitoring server receiving the SNMP response packet the SNMP response acquires the ID of the MIB included in the packet I assign a value of said at multiple SNMP response to the MIB collection / reduction information for definition 10 database previously defined obtained from the reduction information corresponding to the ID of the MIB the procedure of the response value conversion step of recording is converted into real numbers, the, the monitoring service With the Motasa the server, the program SNMP manager to perform the steps of the procedure and the response value conversion step of the SNMP request step, together with the Motasa to the monitored server or the system equipment, the MIB response step A program for an SNMP agent for executing the above procedure .

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