WO2023157076A1

WO2023157076A1 - Control apparatus, control method, and control program

Info

Publication number: WO2023157076A1
Application number: PCT/JP2022/005944
Authority: WO
Inventors: 勇樹武井; 諭士中務; 雅人西口
Original assignee: 日本電信電話株式会社
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2023-08-24

Abstract

A controller (10) acquires a candidate for the content of countermeasure control for a communication event, transmits the acquired candidate for the content of countermeasure control to a maintenance person's terminal (20a), and receives from the maintenance person's terminal (20a) an instruction of the contents of countermeasure control to be executed from the candidate of the contents of countermeasure control. The controller (10) determines a scenario corresponding to the received contents of countermeasure control, and performs settings for a communication device on the basis of the determined scenario.

Description

Control device, control method and control program

The present invention relates to a control device, control method and control program.

Conventionally, resources such as the bandwidth of communication devices that make up a network, the number of filters that can be set, and the number of sessions that can be established are centrally managed, and communication devices that accommodate users are appropriately selected according to the available resources of each communication device. A system is known that allows users to be accommodated flexibly while maintaining constant user communication quality through selection. In such a system, functional units are divided for each processing unit, and each functional unit autonomously acquires DB information and executes each loading process.

In addition, in such a system, for example, by dividing the functional parts, creating a scenario for the accommodation position determination part, and creating a template for inputting the configuration, it is possible to secure the easiness of modification accompanying the addition of new services and equipment renewal, etc., and the external system cooperation part This makes it possible to collect additional resource information and execute a communication device control scenario by an external system (see Non-Patent Document 1, for example).

However, the conventional technology has the problem that it may not be possible to improve the quality of the network due to the inability to appropriately implement the countermeasure control content that should be implemented. For example, a large-scale network such as a telecommunications carrier network accommodates user communications with different requirements, and since the requirements of the network differ for each user and application, under network conditions such as failures and congestion, The contents of the coping control are different.

For this reason, with conventional technology, it was sometimes impossible to determine what action to take in response to an event that occurred. In addition, for example, when implementing more advanced network control by cooperating with a programmable switch that cannot be controlled by a commercially available router controller, it is necessary to configure settings across multiple network devices. In some cases, it was not possible to select a setting scenario for multiple devices considering the setting status and execution order of network devices.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a control device, a control method, and a control program capable of appropriately performing countermeasure control contents to be implemented and improving network quality. do.

In order to solve the above-described problems and achieve the object, the control device of the present invention includes an acquisition unit that acquires a candidate for content of coping control for a communication event; A reception unit that transmits a candidate to a terminal, receives from the terminal an instruction of the content of the countermeasure control to be executed from the candidate of the content of the countermeasure control, and determines a scenario corresponding to the content of the countermeasure control that is received by the reception unit. and a setting unit configured to set the communication device based on the scenario determined by the determining unit.

　According to the present invention, it is possible to appropriately perform the countermeasure control contents to be implemented and improve the quality of the network.

FIG. 1 is a block diagram illustrating the configuration of the controller of this embodiment. FIG. 2 is a diagram showing an overview of the process of recommending a countermeasure control pattern by the controller. FIG. 3 is a diagram showing an overview of coping control processing by the controller. FIG. 4 is a diagram showing an overview of coping control processing by the controller. FIG. 5 is a diagram showing an overview of coping control processing by the controller. FIG. 6 is a flow chart showing an example of a processing procedure by the controller. FIG. 7 is a diagram for explaining conventional problems. FIG. 8 is a diagram for explaining conventional problems. FIG. 9 is a diagram for explaining the effects of the controller of this embodiment. FIG. 10 is a diagram showing a computer that executes a program.

Embodiments of the control device, control method, and control program according to the present application will be described in detail below based on the drawings. Moreover, the present invention is not limited to the embodiments described below.

[Configuration of controller]
FIG. 1 is a block diagram illustrating the configuration of the controller of this embodiment. As illustrated in FIG. 1, a communication system including a control controller (control device) 10 of the present embodiment includes a control controller 10, a host system 20 including a terminal 20a of a maintenance person of the communication system, a detection/analysis system 30, a PE (Provider Edge) It has a router 40 , a programmable switch 50 , a router controller 60 and a programmable switch controller 70 . Moreover, the configuration shown in FIG. 1 is merely an example, and the specific configuration and the number of each device are not particularly limited. In addition, regarding the form of the network shown in FIG. 1, each device may communicate via any communication network such as the Internet, LAN, or VPN (Virtual Private Network) regardless of whether it is wired or wireless.

In the communication system of the present embodiment, by registering as a scenario which communication device to put settings into in accordance with the countermeasure control pattern to be implemented, the control controller 10 can control each communication device (each PE router, programmable switches, etc.) are automatically generated and executed.

In addition, the controller 10 presents to the terminal 20a of the maintenance person of the host system 20, patterns of coping control candidates to be implemented in the form of recommendations. It is assumed that the coping control pattern is calculated based on a plurality of different policies in the detection/analysis system 30 or the like and given to the control controller 10 .

In addition, the controller 10 holds not only the setting contents but also the type of device to be set and the order of setting as the scenario to be held. In addition, the controller 10 has a function of holding the logical accommodation of each device, checking the setting status of the device when the accommodation position is determined, and excluding the set content of the selected scenario.

The control controller (control device) 10 of the present embodiment includes a host system correspondence unit (accepting unit) 11, a control content management unit (acquisition unit) 12, an analysis result DB 12a, an external system cooperation unit 13, a resource collection unit 14, and resource management. It has an accommodation position determination DB 14a, a resource management/accommodation position determination unit (determination unit) 15, a configuration input request management DB 15a, a function unit controller 16, and device setting units (setting units) 17a to 17c. Note that the device setting units 17a to 17c will be referred to as the device setting unit 17 when they are described without distinction.

The host system correspondence unit 11 communicates with the host system 20 wirelessly or by wire. For example, the host system corresponding unit 11 transmits the candidate for the content of the coping control acquired by the control content management unit 12 to the maintenance person's terminal 20a, and instructs the content of the coping control to be executed from the candidate for the content of the coping control. is received from the terminal 20a.

The control content management unit 12 acquires candidates for the content of coping controls for communication events. For example, when the content of the communication event is received from the maintenance person's terminal 20a, the control content management unit 12 requests the detection/analysis system 30, which is an external system, to calculate the coping control for the content of the communication event, and performs coping control. Content candidates are acquired from the detection/analysis system 30 . It should be noted that the control content management unit 12 may calculate the countermeasure control by itself without requesting the detection/analysis system 30 to derive the candidate for the content of the countermeasure control.

The control content management unit 12 communicates with the detection/analysis system 30 via the external system cooperation unit 13. The external system cooperation unit 13 communicates with the detection/analysis system 30 wirelessly or by wire.

The resource collection unit 14 periodically collects information on the resources of each communication device and stores it in the resource management/accommodation position determination DB 14a. For example, the resource collection unit 14 collects, as information about resources, the CPU and memory usage of each PE router 40 and programmable switch 50 as communication devices.

The resource management/accommodation position determination unit 15 determines a scenario corresponding to the details of the coping control received by the host system correspondence unit 11. For example, the resource management/accommodation position determination unit 15 determines a scenario corresponding to the content of the countermeasure control received by the host system correspondence unit 11, in which the setting content, the type of device to be set, and the order of setting are defined in advance. do. Then, the resource management/accommodation position determining unit 15 stores the setting contents and the accommodation position included in the scenario in the configuration input request management DB 15a.

In addition, for example, the resource management/accommodation position determination unit 15 determines which communication device is to be set among the communication devices corresponding to the device type to be set specified in the determined scenario. Decide according to the resource situation. Further, for example, if there is already set content among the setting content defined in the determined scenario, the resource management/accommodation position determining unit 15 excludes the setting content from the scenario.

The function unit controller 16 selects the device setting unit 17 that executes the setting from among the plurality of device setting units 17a to 17c, and instructs the selected device setting unit 17 to execute the setting. The device setting unit 17 sets the communication device based on the scenario determined by the resource management/accommodation position determination unit 15 .

For example, the device setting unit 17 reads the setting contents and accommodation position stored in the configuration input request management DB 15a, selects a command template, and uses the selected command template to generate a command list based on the setting contents and accommodation position. do.

Here, using FIG. 2, an overview of the process of recommending a countermeasure control pattern by the controller will be described. FIG. 2 is a diagram showing an overview of the process of recommending a countermeasure control pattern by the controller. As shown in FIG. 2, the maintenance person's terminal 20a receives a NW failure report from the user A's terminal 80, and notifies the control content management unit 12 of the controller 10 of an analysis implementation request. Note that a user ID and an algorithm name may be specified in the analysis execution request.

The control content management unit 12 notifies the detection/analysis system 30 via the external system cooperation unit 13 of the calculation request for the countermeasure control. The detection/analysis system 30 calculates a plurality of countermeasure controls using a plurality of different optimization algorithms, and returns a countermeasure control pattern including the plurality of countermeasure controls to the control content management unit 12 via the external system cooperation unit 13. .

The control content management unit 12 registers the received response control pattern in the analysis result DB 12a. Then, the control content management unit 12 refers to the data stored in the analysis result DB 12a, and requests the higher-level system support unit 11 to recommend the pattern of the coping control candidate to be implemented. Then, the host system support unit 11 notifies the maintenance person's terminal 20a of the recommendation of the pattern of the countermeasure control candidate to be implemented. When the terminal 20a receives the recommendation of the pattern of the countermeasure control candidate to be executed, the terminal 20a displays the candidate countermeasure control pattern to be executed, thereby allowing the maintenance person to consider which pattern of the countermeasure control to execute.

Next, the countermeasure control processing by the controller 10 after the maintenance personnel selects which countermeasure control pattern to execute will be described with reference to FIGS. 3 to 5. FIG. As exemplified in FIG. 3, when the maintenance person selects which countermeasure control pattern to execute, the terminal 20a sends an execution request for the selected countermeasure control (control #1 in the example of FIG. 3) to the host system. The control content management unit 12 is notified via the corresponding unit 11 . Then, the control content management unit 12 refers to the analysis result DB, confirms the control content, and requests the resource management/accommodation position determination unit 15 to execute control.

The resource management/accommodation position determination unit 15 selects a scenario corresponding to the content of control. For example, in the example of FIG. 3, the resource management/accommodation position determination unit 15 classifies the handling control content of the control #1 as "priority control (APL unit)". Select a scenario for priority control. It should be noted that the scenario is assumed to be set in advance for each classification of the content of countermeasure control, and setting content, setting device, and setting order are defined.

The resource management/accommodation position determination unit 15 refers to the resource management/accommodation position determination DB 14a, and checks the accommodation information, setting presence/absence information, and the resource status of the setting destination device. Here, for example, the resource management/accommodation position determination unit 15 may determine a communication device to be set according to the resource status. In addition, the resource management/accommodation position determining unit 15 determines whether or not there is content that has already been set in the scenario according to the accommodation information and setting information, and if there is content that has already been set in the scenario, it excludes it from the scenario. . Then, the resource management/accommodation position determination unit 15 writes the contents of accommodation, the accommodation position, and the like into the configuration input request management DB 15a according to the scenario.

Subsequently, as exemplified in FIG. 4, the device setting unit 17 reads the setting contents and storage position stored in the configuration input request management DB 15a, selects a command template, and uses the selected command template to generate the setting contents. and generate a command list based on containment location. Then, the device setting unit 17 executes setting to the communication device based on the command list.

Here, using the example of FIG. 5, a setting example for giving priority control to only specific applications in an MPLS (Multi-Protocol Label Switching) VPN (Virtual Private Network) network will be described. As a priority control only for specific applications, the

PE routers

40a and 40b transfer to the

programmable switches

50a and 50b by static/PBR (Policy Base Routing) or the like in granularity such as users to be treated preferentially. After identification by the

programmable switches

50a and 50b, the

PE routers

40a and 40b perform identifiable ID conversion (eg, VLAN-ID), and determine the destination by the

PE routers

40a and 40b.

When implementing this control, the settings for each communication device are as follows. Note that the setting contents and order of setting are examples, and are not limited to these. For example, as exemplified in FIG. 5, the controller 10 creates a priority control VPN for the

PE routers

40a and 40b on the starting and terminating sides. Then, the controller 10 performs application identification setting and control setting for the

programmable switches

50a and 50b. The controller 10 then sets the

PE routers

40a and 40b to pull in to the programmable switches.

By making settings in this way, as a priority control only for specific applications, static/PBR (Policy Base Routing) etc. to the

programmable switches

50a and 50b at the granularity of users who want to be treated preferentially at the

PE routers

40a and 40b It is possible to realize the transfer with

[Processing procedure of the controller]
Next, an example of a processing procedure of processing executed by the controller 10 will be described with reference to FIG. FIG. 6 is a flow chart showing an example of a processing procedure by the controller.

As illustrated in FIG. 6, the control content management unit 12 of the controller 10 receives a request for confirmation of recommended content (analysis execution request) from the maintenance person from the terminal 20a via the host system correspondence unit 11 (step S101). ). Then, the control content management unit 12 receives the countermeasure control pattern from the detection/analysis system 30 and registers it in the analysis result DB 12a (step S102).

The control content management unit 12 of the controller 10 presents a recommendation to the maintenance person by notifying the maintenance person's terminal 20a of the candidates for the coping control pattern via the host system correspondence unit 11 (step S103). Then, the control content management unit 12 determines whether or not to implement coping control (step S104). That is, the control content management unit 12 determines whether or not a request for execution of the recommended coping control has been received from the maintenance person's terminal 20a. As a result, when the control content management unit 12 determines not to perform coping control (No at step S104), the process ends. For example, if the control content management unit 12 does not receive the execution request for the recommended countermeasure control from the maintenance person's terminal 20a within a predetermined time, it determines that the countermeasure control is not to be performed.

Also, when the control content management unit 12 determines to implement coping control (Yes at step S104), it refers to each DB such as the analysis result DB and confirms the control content and the setting destination device (step S105). Here, for example, the resource management/accommodation position determination unit 15 classifies the handling control contents of the control #1 as “priority control (by APL)”, so priority control by application is performed as a scenario corresponding to this. Choose a scenario to play.

Then, the resource management/accommodation position determining unit 15 determines whether there is a set scenario (step S106). As a result, if there is a set scenario (Yes at step S106), the resource management/accommodation position determining unit 15 excludes the set scenario (step S107), and proceeds to step S108.

Also, if there is no set scenario (No at step S106), the resource management/accommodation position determination unit 15 registers the content of accommodation, the accommodation position, etc. in the configuration input request management DB 15a (step S108). Then, the device setting unit 17 reads the setting contents and the accommodation position, executes the setting to each communication device (step S109), and when the setting is completed (step S110), the processing ends.

[Effects of Embodiment]
As described above, the controller 10 according to the embodiment acquires candidates for the contents of the handling control for the communication event, transmits the acquired candidates for the contents of the handling control to the maintenance person's terminal 20a, and determines the contents of the handling control. An instruction of the contents of coping control to be executed from the candidates is received from the maintenance person's terminal 20a. Then, the controller 10 determines a scenario corresponding to the contents of the received countermeasure control, and makes settings for the communication device based on the determined scenario. For this reason, the control controller 10 can appropriately carry out the content of coping control to be executed and improve the quality of the network.

In other words, in the control controller 10, it is possible to arbitrarily select coping control to be executed at the discretion of the maintenance person. Further, in the control controller 10, automating the input of countermeasure control settings not only improves the work efficiency of maintenance personnel, but also shortens the time until implementation, thereby improving the quality of the network. .

Here, conventional problems will be described using FIGS. 7 and 8. FIG. 7 and 8 are diagrams for explaining conventional problems. As shown in FIG. 7, conventionally, large-scale networks such as carrier NW accommodate user communications with different requirements, and network conditions such as failure and congestion are different for each user application. The contents of the countermeasure control to be implemented are different in each case. In the prior art, it was not possible to determine what kind of countermeasures should be taken against the occurring event.

In addition, as shown in FIG. 8, when performing more advanced network control by cooperating with a programmable switch that cannot be controlled by a commercially available router controller, it is necessary to set across multiple network devices. In the prior art, it was not possible to select a setting scenario for multiple devices in consideration of the setting status and execution order of each network device.

Due to the diversification of applications that run on networks, expectations for application-aware networking are increasing. In order to solve such a problem, as illustrated in FIG. 9, the maintainer controls packets of specific users/applications according to network conditions such as failures and congestion, thereby achieving higher quality.・We would like to provide network services that provide high added value.

Therefore, as exemplified in FIG. 9, when a report of NW failure or the like arrives from the user to the maintenance person's terminal 20a, the control controller 10 requests the detection/analysis system 30 to calculate countermeasure control (( 1) see). Then, the detection/analysis system 30 collects NW information and the like, analyzes the cause, and specifies countermeasure control (see (2) in FIG. 9). For example, the detection and analysis system 30 derives a plurality of coping controls by a plurality of different optimization algorithms and notifies the control controller 10 of them. Then, the controller 10 presents a plurality of candidate countermeasures to the terminal 20a of the maintenance person, and allows the maintenance person to select the countermeasure control to be executed. Then, the maintenance person's terminal 20a accepts a selection of coping control to be executed from among the presented multiple coping control candidates, and requests the control controller 10 to make a coping request.

Then, the controller 10 executes coping control according to a scenario set in advance corresponding to the coping control, in which the setting content, the device type to be set, and the order of setting are specified. As a result, the controller 10 can take care of users affected by NW failure or the like. With such a configuration, the control controller 10 can arbitrarily select coping control to be executed at the discretion of the maintenance person. In addition, the control controller 10 can improve the efficiency of maintenance personnel's work by automating the input of countermeasure control settings, and can also improve the quality of the network by shortening the time until implementation. .

[System configuration, etc.]
Each constituent element of each illustrated apparatus according to the above embodiment is functionally conceptual, and does not necessarily need to be physically configured as illustrated. In other words, the specific forms of distribution and integration of each device are not limited to those shown in the figure, and all or part of them can be functionally or physically distributed and integrated in arbitrary units according to various loads and usage conditions. Can be integrated and configured. Further, each processing function performed by each device may be implemented in whole or in part by a CPU and a program analyzed and executed by the CPU, or implemented as hardware based on wired logic.

Further, among the processes described in the above embodiments, all or part of the processes described as being automatically performed can be manually performed, or the processes described as being performed manually can be performed manually. All or part of this can also be done automatically by known methods. In addition, information including processing procedures, control procedures, specific names, and various data and parameters shown in the above documents and drawings can be arbitrarily changed unless otherwise specified.

〔program〕
It is also possible to create a program in which the processing executed by the controller 10 described in the above embodiment is described in a computer-executable language. In this case, the same effects as those of the above embodiments can be obtained by having the computer execute the program. Further, such a program may be recorded in a computer-readable recording medium, and the program recorded in this recording medium may be read by a computer and executed to realize processing similar to that of the above embodiments.

FIG. 10 is a diagram showing a computer that executes a program. As illustrated in FIG. 10, computer 1000 includes, for example, memory 1010, CPU 1020, hard disk drive interface 1030, disk drive interface 1040, serial port interface 1050, video adapter 1060, and network interface 1070. , and these units are connected by a bus 1080 .

The memory 1010 includes a ROM (Read Only Memory) 1011 and a RAM 1012, as illustrated in FIG. The ROM 1011 stores a boot program such as BIOS (Basic Input Output System). Hard disk drive interface 1030 is connected to hard disk drive 1090 as illustrated in FIG. Disk drive interface 1040 is connected to disk drive 1100 as illustrated in FIG. For example, a removable storage medium such as a magnetic disk or optical disk is inserted into the disk drive 1100 . The serial port interface 1050 is connected to, for example, a mouse 1110 and a keyboard 1120, as illustrated in FIG. Video adapter 1060 is connected to display 1130, for example, as illustrated in FIG.

Here, as illustrated in FIG. 10, the hard disk drive 1090 stores an OS 1091, application programs 1092, program modules 1093, and program data 1094, for example. That is, the above program is stored in, for example, the hard disk drive 1090 as a program module in which instructions to be executed by the computer 1000 are described.

Also, the various data described in the above embodiments are stored as program data in the memory 1010 or the hard disk drive 1090, for example. Then, the CPU 1020 reads the program modules 1093 and program data 1094 stored in the memory 1010 and the hard disk drive 1090 to the RAM 1012 as necessary, and executes various processing procedures.

Note that the program module 1093 and program data 1094 related to the program are not limited to being stored in the hard disk drive 1090. For example, they may be stored in a removable storage medium and read by the CPU 1020 via a disk drive or the like. . Alternatively, the program module 1093 and program data 1094 related to the program are stored in another computer connected via a network (LAN (Local Area Network), WAN (Wide Area Network), etc.), and via the network interface 1070 It may be read by CPU 1020 .

Although the embodiment to which the invention made by the present inventor is applied has been described above, the present invention is not limited by the description and drawings forming part of the disclosure of the present invention according to the present embodiment. That is, other embodiments, examples, operation techniques, etc. made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

REFERENCE SIGNS LIST 10 control controller 11 host system correspondence unit 12 control content management unit 12a analysis result DB
13 External system cooperation unit 14 Resource collection unit 14a Resource management/accommodation position determination DB
15 resource management/accommodation position determination unit 15a configuration input request management DB
16 function unit controller 17a to 17c device setting unit

Claims

an acquisition unit that acquires a candidate for content of coping control for a communication event;
a reception unit configured to transmit to a terminal the candidates for the contents of the countermeasure control acquired by the acquisition unit, and to receive from the terminal an instruction for the contents of the countermeasure control to be executed from the candidates for the contents of the countermeasure control;
a determination unit that determines a scenario corresponding to the contents of the countermeasure control received by the reception unit;
and a setting unit that sets a communication device based on the scenario determined by the determination unit.
3. The determining unit determines, as a scenario corresponding to the content of the countermeasure control accepted by the accepting unit, a scenario in which setting details, device types to be set, and setting order are defined in advance. 1. The control device according to 1.
The determining unit determines which of communication devices corresponding to the device type to be set specified in the determined scenario, to which the setting is to be performed, according to the resource status of each device. 3. The control device according to claim 2, characterized by:
3. The control device according to claim 2, wherein, if there is already set content among the setting content defined in the determined scenario, the determining unit excludes the setting content from the scenario. .
When the content of the communication event is received from the terminal, the acquisition unit requests an external system to calculate coping control for the content of the communication event, and acquires a candidate for coping control content from the external system. 2. Control device according to claim 1.
A control method performed by a control device, comprising:
an acquisition step of acquiring a candidate for content of coping control for a communication event;
a receiving step of transmitting to a terminal the candidates for the content of the countermeasure control acquired by the obtaining step, and receiving from the terminal an instruction of the content of the countermeasure control to be executed from the candidates for the content of the countermeasure control;
a determination step of determining a scenario corresponding to the content of the countermeasure control received by the reception step;
and a setting step of setting a communication device based on the scenario determined by the determining step.
an acquisition step of acquiring a candidate for content of coping control for a communication event;
a receiving step of transmitting to a terminal the candidates for the contents of the countermeasure control acquired by the obtaining step, and receiving from the terminal an instruction on the contents of the countermeasure control to be executed from the candidates for the contents of the countermeasure controls;
a determination step of determining a scenario corresponding to the content of the countermeasure control received by the reception step;
A control program for causing a computer to execute a setting step of setting a communication device based on the scenario determined by the determining step.