JP2000259520A - Network managing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a network managing device capable of monitoring a device to be managed without exceeding the allowable capacity of a communication means and without delaying or abandoning information to be transmitted when performing periodical collection from plural devices to be managed. SOLUTION: This device is provided with a communication means 1c for communicating with plural devices 2 to be managed, an information collection requesting means 1b for transmitting an information collection request to the plural devices to be managed in a fixed routine cycle, an information display means 1e for receiving and displaying the information collected result from the device to be managed through the communication means and a schedule managing means if for managing a schedule so that the generation interval of the transmission request to the device to be managed on the basis of the information collection request can be equal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a network management device for periodically collecting information with a plurality of managed devices.

[0002]

2. Description of the Related Art In network management, a management device provides communication means with a managed device, periodically collects information held by the managed device, and displays the collected information to an administrator. I have.

FIG. 11 is a block diagram showing a configuration of a conventional network management device. In FIG. 1, a management device 1 manages a plurality of managed devices 2.
a, information collection requesting means 1b, communication means 1c, information updating means 1d, and information displaying means 1e.

[0004] The information collection requesting means 1b transmits an information collection request to the communication means 1c in response to the notification from the input means 1a and the information updating means 1d. The information display means 1e displays the management information of the information updating means 1d on the man-machine interface.

The plurality of managed devices 2 are respectively
a and a resource management unit 2b. In addition, each communication unit 2a is connected to the communication unit 1c of the management device 1 via the monitoring path 3.

FIG. 12 is a diagram showing a transmission interval of a periodic information collection request from the management device 1 to the managed device 2.
In the figure, a periodic collection process 21 represents a process from transmission of an information collection request to a managed object A to a request reception, and a periodic collection process 22 represents a process from transmission of an information collection request to a managed object B to a request reception. I have.

In addition to communication between the management device 1 and the managed device 2 other than the periodic collection process, the managed device 2
There is an event notification for notifying the occurrence of a failure or the like, and a command for the administrator to actively operate the managed device 2. Since the command and the event notification contain more important information than the periodic collection processing, the effect when discarded is large.

[0008]

In the above-mentioned conventional network management apparatus, when the periodic collection processing is performed on a plurality of managed apparatuses, the period overlaps and temporarily exceeds the allowable capacity of the communication means. As a result, information to be transmitted is delayed or discarded.

In the communication between the management apparatus and the managed apparatus, when a command and an event notification are generated, when the periodic collection processing is continuously performed, the command is not transmitted as compared with the case where the periodic collection processing is not performed. Also, the processing of the event notification is postponed, and the display to the administrator is delayed. Further, if the regular collection interval is concentrated on a certain time, communication exceeding the allowable amount of the communication means is performed, so that there is a disadvantage that information collection is delayed or information is discarded.

[0010] The present invention has been made to solve such a conventional problem, and when periodic collection is performed for a plurality of managed devices, information to be transmitted must not exceed an allowable amount of communication means. It is an object of the present invention to provide a network management device that enables monitoring of a managed device without causing delay or discard.

[0011]

In a network management apparatus according to the present invention, a communication means for communicating with a plurality of managed apparatuses, and an information collection request for the plurality of managed apparatuses are transmitted at a constant periodic interval. Or information collection request means for transmitting at a different periodic cycle, information display means for receiving and displaying the information collection result from the managed device via the communication means, and transmission to the managed device by the information collection request A schedule management means for managing the request generation intervals so as to be equal.

According to the present invention, when periodic collection is performed for a plurality of managed devices, the allowable amount of the communication means is not exceeded.
In addition, a network management device capable of monitoring a managed device without causing delay or discarding of information to be transmitted can be obtained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, there is provided a communication means for communicating with a plurality of managed devices,
An information collection request unit for transmitting an information collection request to a plurality of managed devices at a predetermined regular cycle; an information display unit for receiving and displaying information collection results from the managed devices via a communication unit; Schedule management means for managing the transmission intervals of the transmission requests to the managed devices by the requests so as to be equal. When the transmission intervals of the information collection requests to a plurality of managed objects are constant, the schedule management means This has the effect of leveling the transmission intervals so that information collection requests for a plurality of managed objects do not overlap.

According to a second aspect of the present invention, there is provided a communication means for connecting to a plurality of managed devices and communicating with each of the managed devices having a certain bandwidth, and collecting information for the plurality of managed devices. An information collection request unit for transmitting requests at different regular intervals, an information display unit for receiving and displaying information collection results from the managed device via the communication unit, and a transmission request to the managed device based on the information collection request Schedule management means for managing the occurrence intervals of the information to be equal without exceeding the bandwidth of the communication means.If the transmission intervals of the information collection requests for a plurality of managed objects are different, the schedule management means Calculates the greatest common divisor of the periodic collection for the managed object, calculates the schedule with the greatest common divisor as a cycle, and equalizes the transmission interval to the communication means. It is having an effect.

According to a third aspect of the present invention, in the second aspect of the invention, the schedule management means has a function of allocating a schedule in order from an information collection request to a managed device having a short transmission period of the information collection request. To be prepared,
Irrespective of the size of the period of the periodic collection, there is an effect that the communication means is leveled without changing the period.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the schedule management means has a function of inputting a value of a transmission cycle of the information collection request in advance. If the period is not specified,
By making it possible to register only the period of the periodic collection that is easy to calculate the greatest common divisor, even if the period of the periodic collection process is changed, the calculation of the greatest common divisor becomes faster and the load on the schedule management means is reduced. Have.

According to a fifth aspect of the present invention, in the second aspect of the present invention, the schedule management means, if an information collection request for the next same managed object occurs during the periodic information collection processing, A function that does not execute the request due to duplication of information is provided.When performing periodic information collection transmission, the response to transmission takes longer than the period of the periodic collection process due to communication delay etc. In the case where there is, there is an effect that information collection transmission is not newly performed.

According to a sixth aspect of the present invention, in the second aspect of the present invention, when a new information collection request is newly registered, the schedule management means once immediately after the registration, regardless of the cycle. It has a function to shorten the response time to the information display unit immediately after the input by making an information collection request. By transmitting to the added managed device first, priority is given to the status collection of the added managed device. It has the effect of performing it.

According to a seventh aspect of the present invention, there is provided a communication means for connecting to a plurality of managed devices and communicating with each of the managed devices having a certain bandwidth, and a communication amount for the plurality of managed devices. Information requesting means for transmitting different information collection requests at different regular intervals, information display means for receiving and displaying information collection results from managed devices via communication means, and Schedule management means for managing the intervals between transmission requests to the device and the amount of communication to be collected so as not to exceed the bandwidth of the communication means. When the communication traffic is different, the communication traffic of the response is leveled.

In the invention according to claim 8, in the invention according to claim 7, the schedule management means expects that the communication amount of the information collection request expected to occur exceeds the allowable amount of the allocated communication means. In this case, the schedule period for each managed device of the information collection request is thinned out so that the communication amount of the communication means is equal to or less than the allowable amount of the management path. When the communication amount exceeds the allowable amount, the communication amount is reduced to the allowable amount by thinning the information collection interval, and the management of the managed device is performed without discarding the information collection request to be transmitted.

According to a ninth aspect of the present invention, in the invention according to the seventh aspect, the schedule management means collects information for the managed device when timeout occurs continuously in the managed device for the periodic information collection processing. Requests are made only to the minimum necessary, and management is performed so that the communication volume is reduced until a transition is made to a state where an information collection request can be made.The schedule management means recognizes that a timeout has occurred due to the occurrence of a periodic collection process However, the period until the timeout state is restored is changed to the minimum periodical collection processing, and the communication amount is reduced.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the schedule management means is provided with a minimum necessary information when the recovery of the managed device enables the periodic information collection processing. The management is performed so that the collection request is terminated and the information collection request to the managed device is restarted. When the recovery of the timeout has been collected, the schedule management unit performs a periodic collection process for the managed object and recovers the timeout. This has the effect of enabling later state collection.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a block diagram showing the configuration of a network management apparatus according to Embodiment 1 of the present invention. Components identical to those shown in FIG. I do. In FIG. 1, the management device 1 has an input unit 1a, an information collection request unit 1b, a communication unit 1c, an information update unit 1d, and an information display unit 1e. A schedule management unit 1f is provided between the updating unit 1d and the communication unit 1c.

Each of the plurality of managed devices 2 has a communication unit 2a and a resource management unit 2b.
Are the communication means 1 of the management device 1 by the monitoring path 3 respectively.
c.

The schedule management means 1f includes the communication means 1c.
Has the function of acquiring the period of the periodic collection process from the information collection requesting unit 1b for the communication unit 1b, calculating the transmission interval to the communication unit 1c, and transmitting to the communication unit 1c.

In this configuration, the management device 1 uses the schedule management unit 1f to level the request to the communication unit 1c with respect to the request registered by the input unit 1a and transmitted by the information collection request unit 1b, The information of the resource management unit 2b of the managed device 2 is collected.

The communication means 2a of the managed device 2
Is transmitted to the information display means 1 through the information update means 1d.
e. In this way, the transmission request is leveled by the schedule management unit 1f, so that the periodic status collection with the managed device 2 can be performed without delaying or discarding the transmission information in the communication unit 1c.

FIG. 2 is a diagram showing the transmission interval of the information collection request when the transmission interval to the managed object is constant. In the figure, a periodic collection process 21 indicates a process from transmission of an information collection request of the managed object A to a request reception, and a periodic collection process 23 indicates a process from transmission of an information collection request of the managed object B to reception of the request.

12 is different from FIG. 12 in that the schedule management unit 1f transmits the data so that the periodical collection process 23 of the managed object B does not overlap with the information collection process 21 of the managed object A. The point is that leveling is performed.

FIG. 3 is a diagram showing transmission intervals of information collection requests when periodic collections of different periods are performed for a plurality of managed devices 2. In the figure, a periodic collection process 21 shows a process from transmission of an information collection request of the managed object A to a request reception, a periodic collection process 23 shows a process from transmission of an information collection request of the managed object B to reception of the request, The periodic collection process 24 indicates a process from transmission of an information collection request of the managed object C to reception of the request.

In the example shown in FIG. 3, the transmission interval of the process 24 to the managed object C is half the cycle of the processes 21 and 23. The schedule management unit 1f calculates the greatest common divisor of the period of the periodic collection for each managed device 2, and calculates the schedule using the greatest common divisor as the period.

In the example shown in FIG. 3, there are two managed devices 2 having a period of 60 seconds and one managed device 2 having a period of 30 seconds. In this case, by performing the periodic collection as shown in FIG. 3, the transmission to the communication unit 1c can be leveled.

FIG. 4 shows a procedure for calculating a schedule. In the figure, a process 31 indicated by a circle
Is a periodic collection process (1/3 cycle) of the managed object,
The process 32 indicated by the mark is a periodic collection process (1/2
The period 33 and the process 33 indicated by □ are periodic collection processes (one period) of the management target.

In the example shown in FIG. 4, the periodic collection processing 31 with the shortest cycle is registered first, the periodic collection processing 32 with the shortest cycle is registered next, and the periodic collection processing 33 with the longest cycle is registered last. register. In the schedule management means 1f, the greatest common divisor of the period of the periodic collection for each managed device 2 is calculated, and the largest common divisor is set as a period, and the periodic collection for the managed device 2 having a smaller cycle is performed based on the greatest common divisor. Finally, periodic collection is assigned to the managed device 2 having a large cycle. Thereby, regardless of the size of the period of the periodic collection, the communication unit 1c can be leveled without changing the period.

If the period of the periodic collection is not specified, it may be time-consuming to calculate the greatest common divisor. By having the input means 1a capable of registering only the period of the periodic collection in which the greatest common divisor can be easily calculated, even if the period of the periodic collection process is changed, the calculation of the greatest common divisor becomes faster and the load on the schedule management means 1f is reduced. To make things possible.

FIG. 5 shows a procedure in a case where the response of the periodic collection processing is delayed and overlapped with the time of the next periodic collection processing. In the figure, a periodic collection process 21 shows a process from transmission of an information collection request of the managed object A to a request reception, a periodic collection process 23 shows a process from transmission of an information collection request of the managed object B to reception of the request, Periodic collection processing 24
Indicates a process from transmission of an information collection request to reception of a request of the managed object C, and a periodic collection process 29 indicates a periodic collection process in which the processing time for the managed object C is longer than the period of the periodic collection.

If a response to the transmission takes longer than the period of the periodic collection processing due to communication delay or the like during the periodical information collection and transmission, no new information collection and transmission is performed. Thus, when the communication is delayed, a large number of transmission requests are generated in the communication unit 1c, so that the other managed devices 2 that are not delayed are not affected.

FIG. 6 shows a change in the transmission interval when one managed device 2 is added from the transmission interval in FIG. In the figure, a periodic collection process 21 shows a process from transmission of an information collection request of the managed object A to a request reception, a periodic collection process 23 shows a process from transmission of an information collection request of the managed object B to reception of the request, The periodic collection process 25 indicates a process from transmission of an information collection request to the managed object D to reception of the request.

The periodic collection process 26 indicates a process from transmission of an information collection request to reception of a request for the information of the managed object A whose periodical collection process interval has been changed with the addition of the process 25.
The periodic collection process 27 indicates a process from the transmission of the information collection request to the reception of the information collection request of the managed object B whose periodical collection processing interval has been changed with the addition of the process 25, and the periodic collection process 28 indicates the information collection for the managed object D. This shows the processing from request transmission to request reception.

FIG. 6 shows an example in which a new information collection request is transmitted to the managed object D (process 25), and the periodic collection processing interval for other managed objects is changed accordingly. When the transmission interval is changed, the transmission to the added managed device 2 is performed first, so that the state collection of the added managed device 2 can be preferentially performed.

FIG. 7 is a diagram showing an information collection request transmission interval when the amount of communication collected differs. The figure shows a periodic collection process (cycle 60 seconds, processing time 30 seconds) 41 for a managed object and a periodic collection process (cycle 60 seconds, processing time 10 seconds) 42 for a managed object.

The schedule management means 1f can equalize the communication traffic of the response when the communication traffic of the response is different even if the information collection request is the same. The communication volume of the response is collected from the information collection request unit 1b before transmission, and scheduling is performed so that the communication interval becomes uniform according to the communication volume of the response. In the case of FIG. 7, communication leveling is performed by scheduling the periodical collection process 42 to be in the middle of the period when the periodical collection process 41 is not performed in consideration of the processing time.

FIG. 8 shows a communication means 1c according to the embodiment of the present invention.
Is a diagram showing the thinning process of the overlapped periodic collection in FIG.
Second, processing time 30 seconds) 43, periodic collection processing (period 30 seconds, processing time 30 seconds) 44 for the managed object, and periodic collection processing 45 to be thinned out.

In the case of FIG. 8, a new periodic collection process 44 occurs, so that it is necessary to thin out with the periodic collection process 43. In this case, the periodic collection processing 44 and the periodic collection processing 43 are alternately transmitted, and thinning is performed during that period.

When the communication amount of the information collection request that is expected to occur during the schedule calculation exceeds the allowable amount of the communication means 1c, the information collection interval is thinned to make the communication amount equal to or less than the allowable amount. It is possible to manage the managed device 2 without discarding the information collection request to be transmitted.

FIG. 9 shows a case where the periodical collection processing by the communication unit 1c according to the embodiment of the present invention is performed when the traffic of the periodical collection processing is reduced to the managed device 2 which has timed out. It shows a change in the interval.

In the figure, periodic collection processing (period 30 seconds, processing time 15 seconds) 46 and periodic collection processing (period 30 seconds, processing time 5 seconds) 47 for a managed object, periodic collection processing 47 Collection processing (cycle 3
0 seconds, processing time 15 seconds) 48, and a minimum periodic collection process (cycle 30 seconds, processing time 5 seconds) 49 for monitoring timeout recovery.

In the case shown in the figure, the schedule management means 1f recognizes that the time-out state has occurred due to the occurrence of the periodic collection processing 48, and the period until the timeout state is restored is changed to the minimum periodical collection processing 49. It is possible to reduce the amount of communication.

FIG. 10 shows a regular collection process performed by the communication unit 1c according to the embodiment of the present invention. 5 shows a change in the transmission interval in the case of (1).

In the figure, a periodic collection process (period 30 seconds, processing time 15 seconds) 46 and a periodic collection process (period 30 seconds, processing time 5 seconds) 47 for a managed object, and a minimum (A period of 30 seconds and a processing time of 5 seconds) 49. Periodic collection processing 50
Indicates periodic collection for the managed object that has collected the recovery of the timeout.

In the case shown in FIG. 10, the periodic management process 50 for the managed object that has collected the recovery of the timeout has been collected. Enables status collection.

[0053]

As described above, according to the present invention, the frequency of occurrence of the periodic collection is leveled, so that the influence on the event or command that occurs can be suppressed to a certain level. In addition, since the communication is not concentrated for a certain period of time, there is an advantageous effect that the communication amount does not exceed the allowable amount of the allocated communication means, and the delay of information collection and the discarding of information can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a network management device according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a transmission interval of an information collection request in a case where a transmission interval for a managed object in a communication unit is constant.

FIG. 3 is a diagram showing a transmission interval of an information collection request when a transmission interval for a managed object in a communication unit is different.

FIG. 4 is a diagram showing a procedure of schedule calculation.

FIG. 5 is a diagram illustrating a procedure in a case where a response of a periodic collection is delayed and overlapped with a time of a next periodic collection.

FIG. 6 is a diagram illustrating a transmission interval of an information collection request when a new managed object occurs in a communication unit.

FIG. 7 is a diagram showing a transmission interval of an information collection request when communication amounts collected from managed objects in communication means are different from each other;

FIG. 8 is a diagram illustrating a thinning-out process for overlapping periodic collection in a communication unit.

FIG. 9 is a diagram illustrating a change in a transmission interval when the communication amount of the periodic collection to the managed device for which the periodic collection in the communication unit has timed out is reduced.

FIG. 10 is a diagram illustrating a change in a transmission interval from a case where a timeout is recovered by regular collection in a communication unit and a communication amount of the regular collection to the managed device is reduced to a case where normal collection is performed.

FIG. 11 is a block diagram showing a configuration of a conventional network management device.

FIG. 12 is a diagram showing a transmission interval of an information collection request in a conventional communication unit.

[Explanation of symbols]

Reference Signs List 1 management device 1a input unit 1b information collection request unit 1c communication unit 1d information update unit 1e information display unit 1f schedule management unit 2 managed device 2a communication unit 2b resource management unit 3 monitoring path 21 periodic collection processing of managed object A ( (Period of 60 seconds) 23 Periodic collection process of managed object B (60 seconds period) 24 Periodic collection process of managed object C (30 seconds period) 25 New collection process of managed object D (60 seconds period) 26 Managed Periodic collection processing of target A (60-second cycle) 27 Periodic collection processing of managed object B (60-second cycle) 28 Periodic collection processing of managed object D (60-second cycle) 29 Period in which the processing time is longer than the period of the periodic collection Collection processing 31 Periodic collection processing of managed objects (１ ／ cycle) 32 Periodic collection processing of managed objects (１ ／ cycle) 33 Periodic collection processing of managed objects (1 cycle) 41 Periodic collection process for managed objects (cycle 60 seconds,
(Processing time 30 seconds) 42 Periodic collection processing for managed objects (cycle 60 seconds,
(Processing time 10 seconds) 43 Periodic collection processing for managed objects (period 30 seconds,
(Processing time 30 seconds) 44 Periodic collection processing for managed objects (period 30 seconds,
Processing time 30 seconds) 45 Periodic collection processing to be thinned 46 Periodic collection processing for managed objects (period 30 seconds,
(Processing time: 15 seconds) 47 Periodic collection processing for managed objects (period: 30 seconds,
Processing time 5 seconds) 48 Periodic collection processing for managed objects that have timed out (cycle 30 seconds, processing time 15 seconds) 49 Minimum periodic collection processing to monitor timeout recovery (cycle 30 seconds, processing time 5 seconds) 50) Periodic collection processing for managed objects that have collected that the timeout has been recovered

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Claims (10)

[Claims] A communication unit that communicates with a plurality of managed devices; an information collection request unit that transmits an information collection request to the plurality of managed devices at a predetermined regular cycle; Information display means for receiving and displaying the information collection result from the device via the communication means, schedule management means for managing the transmission intervals of the transmission requests to the managed device by the information collection request to be equal, A network management device comprising: 2. A communication means for connecting to a plurality of managed devices and communicating with each of the managed devices having a certain bandwidth, and transmitting information collection requests to the plurality of managed devices at different regular intervals. Information collection request means for transmitting at a regular cycle, information display means for receiving and displaying the information collection result from the managed device via the communication means, and transmitting a transmission request to the managed device by the information collection request. A network management device, comprising: schedule management means for managing the occurrence intervals so as to be equal without exceeding the bandwidth of the communication means. 3. The network management device according to claim 2, wherein the schedule management means has a function of allocating a schedule in order from the information collection request to the managed device having a short transmission cycle of the information collection request. 4. The network management apparatus according to claim 2, wherein the schedule management means has a function of inputting the value of the transmission cycle of the information collection request by limiting the value in advance. 5. The schedule management means has a function of not executing an information collection request for the next same management target during a periodical information collection process because the information is duplicated. 3. The network management device according to claim 2, wherein: 6. The schedule management means, when a new information collection request is newly registered, makes an information collection request once immediately after the registration, regardless of the cycle, thereby responding to the information display means immediately after the input. 3. The network management device according to claim 2, further comprising a function of reducing time. 7. A communication means for connecting to a plurality of managed devices and communicating with each of the managed devices having a certain bandwidth, and an information collection request having a different communication volume for the plurality of managed devices. Information collection request means for transmitting the information at different regular intervals, information display means for receiving and displaying the information collection result from the managed device via the communication means, and the managed device based on the information collection request. A network management device, comprising: a schedule management unit that manages the transmission intervals of transmission requests to the communication units and the amount of communication to be collected so as not to exceed the bandwidth of the communication unit. 8. The schedule management means, if it is anticipated that the communication amount of the information collection request that is expected to occur exceeds the allowable amount of the allocated communication means, schedules the information collection request for each managed device. 8. The network management apparatus according to claim 7, wherein a cycle is thinned out so that a communication amount in the communication unit is set to be equal to or less than an allowable amount of a management path. 9. The schedule management means, when timeouts continue in the managed device for the periodic information collection process, make only a minimum necessary information collection request to the managed device, and the schedule collection means can perform the information collection request. 8. The network management device according to claim 7, wherein the network management device manages the communication amount so as to reduce the traffic amount until the state transitions. 10. The schedule management means terminates a minimum required information collection request and resumes an information collection request for a managed device when the recovery of the managed device enables periodic information collection processing. 10. The network management apparatus according to claim 9, wherein the management is performed in such a manner.