WO2024053009A1 - Dispositif de commande de réseau et procédé de commande - Google Patents

Dispositif de commande de réseau et procédé de commande Download PDF

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Publication number
WO2024053009A1
WO2024053009A1 PCT/JP2022/033544 JP2022033544W WO2024053009A1 WO 2024053009 A1 WO2024053009 A1 WO 2024053009A1 JP 2022033544 W JP2022033544 W JP 2022033544W WO 2024053009 A1 WO2024053009 A1 WO 2024053009A1
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WO
WIPO (PCT)
Prior art keywords
change time
node
setting change
execution cycle
information
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PCT/JP2022/033544
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English (en)
Japanese (ja)
Inventor
寛 王
達也 島田
航太 浅香
Original Assignee
日本電信電話株式会社
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Priority to PCT/JP2022/033544 priority Critical patent/WO2024053009A1/fr
Publication of WO2024053009A1 publication Critical patent/WO2024053009A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications

Definitions

  • the present invention relates to a network controller and a control method.
  • FIG. 7 is a diagram showing a configuration example of a conventional communication system 1000.
  • the communication system 1000 includes one or more NW nodes 1 , a NW controller 2 , and an operation system 3 .
  • the NW controller 2 includes a quality collection section 4 and an analysis control section 5.
  • the quality collection unit 4 collects quality information from each NW node 1. Based on the quality information of each NW node 1 collected by the quality collection unit 4, the analysis control unit 5 analyzes the quality information and controls the settings of the NW node 1 according to the analysis result. At this time, the execution cycle of the processing performed by the quality collection section 4 and the analysis control section 5 is generally set in advance by the operation system 3.
  • the optimal execution cycle for network control depends on the setting change time in the NW node 1. Specifically, it is desirable that the execution cycle and the setting change time are the same length. As shown in Figure 8, if the execution cycle is longer than the configuration change time, there will be idle time between the completion of the configuration change on NW node 1 and the start of the next configuration change, which will impair real-time performance. Put it away. On the other hand, as shown in FIG. 9, if the setting change time is longer than the execution cycle, the NW controller 2 performs the next analysis and control before the setting change of the NW node 1 is completed, so it takes time to perform the control. Resulting in. For example, setting change-2 shown in FIG. 9 cannot be performed immediately after analysis/control processing-2.
  • the optimal execution cycle for network control depends on the setting change time in the NW node 1, but the setting change time in conventional network control differs depending on the type and version of the NW node. Therefore, there is a problem in that it cannot be set uniquely, and optimization requires a lot of operations.
  • the present invention aims to provide a technology that can suppress operations due to network control.
  • One aspect of the present invention includes a setting change time acquisition unit that acquires setting change time information indicating the time required to change the settings of each of one or more node devices to be controlled; , an execution cycle determination unit that determines an execution cycle for collecting quality information and controlling the one or more node devices; and an execution cycle determination unit that determines an execution cycle for collecting quality information and controlling the one or more node devices; and an analysis control unit that controls the settings of each node device based on the quality information of each node device collected by the quality collection portion at the execution cycle determined by the execution cycle determination unit.
  • a network controller comprising:
  • One aspect of the present invention is to obtain setting change time information indicating the time required to change the settings of each of one or more node devices to be controlled, and to collect quality information based on the obtained setting change time information.
  • Determine an execution cycle for controlling one or more node devices collect quality information from the one or more node devices in the determined execution cycle, and collect quality information of each node device in the determined execution cycle.
  • This is a control method for controlling the settings of each node device based on the following.
  • FIG. 1 is a diagram illustrating an example configuration of a communication system in a first embodiment. It is a flowchart which shows the flow of the execution period setting process performed by the NW controller in 1st Embodiment. It is a flowchart showing the flow of quality collection and control processing performed by the NW controller in the first embodiment. It is a flowchart which shows the flow of the execution period setting process performed by the NW controller in 2nd Embodiment. It is a figure showing an example of composition of a communication system in a 3rd embodiment. It is a flowchart which shows the flow of the execution period setting process performed by the NW controller in 3rd Embodiment.
  • 1 is a diagram showing a configuration example of a conventional communication system.
  • FIG. 2 is a diagram for explaining a conventional problem.
  • FIG. 2 is a diagram for explaining a conventional problem.
  • FIG. 1 is a diagram showing a configuration example of a communication system 100 in the first embodiment.
  • the communication system 100 includes one or more NW nodes 10, a NW controller 20, and an operation system 30.
  • NW nodes 10 and the NW controller 20 and between the NW controller 20 and the operation system 30 are connected via transmission paths.
  • the transmission line may be an optical transmission line such as an optical fiber, or an electric line such as a coaxial cable.
  • the NW node 10 is a device that is controlled by the NW controller 20.
  • the NW node 10 operates according to the settings of the NW controller 20.
  • the NW node 10 may be a transfer device having an optical switch function and a delay measurement function, or may be a device having an edge computing function instead of the optical switch function, or may be a device having an edge computing function instead of the optical switch function, or may have other communication functions. It may be a device that has.
  • the NW node 10 may have a throughput measurement function instead of the delay measurement function.
  • the NW node 10 is one aspect of a node device.
  • the NW node 10 reports setting change time information to the NW controller 20 upon request from the NW controller 20 or spontaneously when the communication system 100 is connected to the network.
  • the setting change time information represents information regarding the time required to change the settings of the NW node 10 (hereinafter referred to as "setting change time").
  • the setting change time is the time required from the time when the NW node 10 receives a control command regarding the setting change of the NW controller 20 until the setting change is completed.
  • the NW controller 20 acquires setting change time information from each NW node 10, and determines the collection of communication quality information (hereinafter referred to as "quality information") and the execution cycle of analysis control based on the obtained setting change time information. It is the network controller that decides.
  • the NW controller 20 collects quality information from each NW node 10 at the determined execution cycle, and controls the settings of each NW node 10 based on the collected quality information.
  • the operation system 30 is a system for controlling the NW controller 20.
  • the operation system 30 is operated by a user.
  • the operation system 30 notifies the NW controller 20 of instructions according to the user's operation.
  • the operation system 30 is one aspect of a host device.
  • the NW controller 20 includes a setting change time acquisition section 21, an execution cycle determination section 22, a quality collection section 23, and an analysis control section 24.
  • the setting change time acquisition unit 21 acquires the setting change time information of each NW node 10 connected to the NW controller 20 for each NW node 10. Note that the setting change time acquisition unit 21 may obtain the setting change time information of each NW node 10 from the operation system 30.
  • the execution cycle determination unit 22 determines the execution cycle for collecting quality information and controlling each NW node 10 based on the configuration change time information of each NW node 10 acquired by the configuration change time acquisition unit 21. Specifically, the execution cycle determination unit 22 determines the maximum time among the configuration change time information of each NW node 10 acquired by the configuration change time acquisition unit 21, and the execution time (hereinafter “ (hereinafter referred to as “collection execution time”) or the execution time required for processing by the analysis control unit 24 (hereinafter referred to as "control execution time”).
  • the collection execution time and the control execution time are known information and are held in advance by the execution cycle determining unit 22. Note that the collection execution time and the control execution time vary depending on the number of NW nodes 10 connected to the NW controller 20. Therefore, the execution cycle determining unit 22 holds information regarding the collection execution time and control execution time for each number of NW nodes 10 connected to the NW controller 20. Information regarding the collection execution time and the control execution time may be obtained by measuring the time actually required for processing online (while processing). As described above, the execution cycle determining unit 22 determines the cycle for collecting quality information and the cycle for controlling each NW node 10, and the length of the cycle for collecting quality information and the cycle for controlling each NW node 10. The length of the period for controlling the NW node 10 is the same.
  • the quality collection unit 23 collects quality information from each NW node 10 at the execution cycle determined by the execution cycle determination unit 22.
  • the quality information collected by the quality collection unit 23 is information used for network quality assurance control in real time.
  • the analysis control unit 24 analyzes the quality information based on the quality information of each NW node 10 collected by the quality collection unit 23 at the execution cycle determined by the execution cycle determination unit 22, and performs NW processing according to the analysis result. Setting control of the node 10 is performed.
  • FIG. 2 is a flowchart showing the flow of the execution cycle setting process performed by the NW controller 20 in the first embodiment.
  • the execution cycle setting process shown in FIG. 2 is executed at the timing when the NW controller 20 is activated, when a new NW node 10 is connected, or when an instruction from an operator (for example, an instruction from the operation system 30) is received. is executed.
  • the setting change time acquisition unit 21 requests each NW node 10 connected to the NW controller 20 to report setting change time information.
  • the setting change time acquisition unit 21 may request reporting of setting change time information only from the NW nodes 10 for which the NW controller 20 has not yet grasped the setting change time, or may request all NW nodes 10 to report the setting change time information. It is also possible to request a report of setting change time information.
  • the NW node 10 that has received a request to report the setting change time information from the NW controller 20 reports the setting change time information to the NW controller 20.
  • the setting change time acquisition unit 21 collects the setting change time information of each NW node 10 connected to the NW controller 20 (step S101).
  • the setting change time acquisition unit 21 outputs the collected setting change time information of each NW node 10 to the execution cycle determining unit 22. Note that if the NW node 10 voluntarily reports setting change time information when connected to the NW controller 20, the setting change time acquisition unit 21 may collect the reported setting change time information.
  • the execution cycle determination unit 22 determines the execution cycle for collecting quality information and controlling each NW node 10 based on the setting change time information of each NW node 10 output from the setting change time acquisition unit 21 (step S102). First, the execution cycle determining unit 22 compares the value of the setting change time information of each NW node 10, the value of the collection execution time held, and the value of the control execution time held. The execution cycle determination unit 22 determines the maximum value as the execution cycle as a result of the comparison. For example, if the held collection execution time value is the maximum value, the execution cycle determination unit 22 determines the collection execution time value as the execution cycle. The execution cycle determination unit 22 sets the determined execution cycle value in the quality collection unit 23 and the analysis control unit 24 (step S103).
  • FIG. 3 is a flowchart showing the flow of quality collection and control processing performed by the NW controller 20 in the first embodiment.
  • the quality collection and control processing shown in FIG. 3 is performed at the timing of quality information collection by the quality collection unit 23.
  • the quality information collection timing is set in advance (for example, every 1 millisecond to every 1 second).
  • the quality collection unit 23 collects the quality information of each NW node 10 until the period of the execution cycle newly set by the execution cycle determination unit 22 has elapsed based on the quality information collection timing (step S201).
  • the quality collection unit 23 outputs the collected quality information of each NW node 10 to the analysis control unit 24.
  • the analysis control unit 24 analyzes each NW node 10 output from the quality collection unit 23 until the period of the execution cycle newly set by the execution cycle determination unit 22 elapses based on the quality information collection timing. analysis of the quality information and control of the settings of the NW node 10 according to the analysis results (step S202).
  • the NW controller 20 includes a setting change time acquisition unit 21 that obtains setting change time information of each of the NW nodes 10 to be controlled, and a an execution cycle determination unit 22 that determines the execution cycle for collecting quality information and controlling each NW node 10; and a quality collection unit that collects quality information from each NW node 10 at the execution cycle determined by the execution cycle determination unit 22. and an analysis control unit 24 that controls the settings of each NW node 10 based on the quality information of each NW node 10 collected by the quality collection unit 23 at the execution cycle determined by the execution cycle determination unit 22; Equipped with.
  • the collection and analysis control execution cycle can be automatically determined and updated according to each NW node 10 connected to the NW controller 20. Therefore, it becomes possible to realize high-quality network control with low operation costs.
  • the execution cycle determining unit 22 of the NW controller 20 determines the maximum time, the collection execution time, or the maximum control execution time among the setting change time information of each NW node 10 acquired by the setting change time acquisition unit 21. Determine the time as the execution period. If even one of the setting change, quality information collection processing, and analysis control processing of each NW node 10 has not been completed, the processing that has not been completed will be on standby. By setting the maximum time as the execution cycle, it is possible to execute high-quality collection processing and analysis control processing while relaxing the processing performance required for each processing.
  • the setting change time acquisition unit 21 measures the setting change time in each NW node 10 with respect to all the NW nodes 10 connected to the NW controller 20. Specifically, the setting change time acquisition unit 21 first requests each NW node 10 to change settings, and calculates the RTT (Round Trip Time) until receiving a completion response from each NW node 10 in response to the request. Measure. The setting change time acquisition unit 21 sets the measured RTT value of each NW node 10 as the setting change time of each NW node 10.
  • the setting change time acquisition unit 21 measures the round-trip propagation delay time between the NW node 10 and the NW controller 20 using Ping, etc., and calculates the value obtained by subtracting the round-trip propagation delay time from the RTT. may be used as the setting change time.
  • FIG. 4 is a flowchart showing the flow of the execution cycle setting process performed by the NW controller 20 in the second embodiment.
  • the execution cycle setting process shown in FIG. 4 is executed at the timing when the NW controller 20 is activated, when a new NW node 10 is connected, or when an instruction from an operator (for example, an instruction from the operation system 30) is received. is executed. Note that in the process shown in FIG. 4, the same process as in FIG. 2 is given the same reference numeral as in FIG. 2, and a description thereof will be omitted.
  • the setting change time acquisition unit 21 measures the setting change time of each NW node 10 connected to the NW controller 20 (step S201). For example, the setting change time acquisition unit 21 measures the RTT with each NW node 10. The setting change time acquisition unit 21 sets the measured RTT value of each NW node 10 as the setting change time of each NW node 10. The setting change time acquisition unit 21 outputs information on the setting change time of each NW node 10 based on the measured results to the execution cycle determining unit 22. After that, the processing from step S102 onwards is executed.
  • the setting change time acquisition unit 21 uses the results of measuring the RTT and round-trip propagation delay time between the NW node 10 and the NW controller 20. Get configuration change time information based on Thereby, setting change time information can be acquired using a method different from that in the first embodiment.
  • the NW controller 20 determines the execution cycle based on the setting change time information obtained using a method different from that of the first embodiment, and collects quality information from each NW node 10 or collects the collected quality information at the determined execution cycle.
  • the settings of each NW node 10 are controlled based on the quality information of each NW node 10. As a result, effects similar to those of the first embodiment can be obtained.
  • the third embodiment describes a configuration in which a NW controller holds setting change time information for each type of NW node, and acquires setting change time information according to the type of NW node based on the held information. do.
  • FIG. 5 is a diagram showing a configuration example of a communication system 100a in the third embodiment.
  • the communication system 100a includes one or more NW nodes 10a, a NW controller 20a, and an operation system 30a.
  • NW nodes 10a and the NW controller 20a, and between the NW controller 20a and the operation system 30a are connected via transmission paths.
  • the communication system 100a differs in configuration from the first embodiment in that it includes a NW node 10a, a NW controller 20a, and an operation system 30a instead of the NW node 10, NW controller 20, and operation system 30.
  • differences from the first embodiment will be explained.
  • the NW node 10a is a device that is controlled by the NW controller 20a.
  • the NW node 10a operates according to the settings of the NW controller 20a.
  • the NW node 10a may be a transfer device having an optical switch function and a delay measurement function, or may be a device having an edge computing function instead of the optical switch function, or may have other communication functions. It may be a device that has.
  • the NW node 10a may have a throughput measurement function instead of the delay measurement function.
  • the NW node 10a is one aspect of a node device.
  • the NW node 10a reports type information to the NW controller 20a upon request from the NW controller 20a or spontaneously when the communication system 100a is connected to the network.
  • the NW controller 20a acquires setting change time information according to the type of NW node 10a from the operation system 30a.
  • the NW controller 20a creates a configuration change time table by registering the acquired configuration change time information according to the type of the NW node 10 in the table.
  • the setting change time table is a table in which the type of NW node 10a and setting change time information are registered in association with each other.
  • the NW controller 20a acquires type information from each NW node 10a, and determines the execution cycle based on the acquired type information and the setting change time table.
  • the NW controller 20a collects quality information from each NW node 10a at the determined execution cycle, and controls the settings of each NW node 10a based on the collected quality information.
  • the operation system 30a is a system for controlling the NW controller 20.
  • the operation system 30a notifies the NW controller 20a of setting change time information according to the type of the NW node 10a.
  • the operation system 30a is one aspect of a host device.
  • the setting change time information according to the type of NW node 10a may be obtained by the operator through preliminary verification before network installation, or if it is published in a catalog etc., the information may be used. good.
  • reference document 1 below discloses setting change time information (described as "switching time" in reference document 1) of an optical switch by Polatis.
  • the NW controller 20a includes a setting change time acquisition section 21a, an execution cycle determination section 22, a quality collection section 23, an analysis control section 24, a table creation section 25, and a table storage section 26.
  • the configuration of the NW controller 20a differs from that of the first embodiment in that it includes a setting change time acquisition section 21a instead of the setting change time acquisition section 21, and further includes a table creation section 25 and a table storage section 26.
  • the rest of the configuration of the NW controller 20a is the same as the NW controller 20. Therefore, a description of the entire NW controller 20a will be omitted, and the setting change time acquisition section 21a, table creation section 25, and table storage section 26 will be explained.
  • the table creation unit 25 acquires configuration change time information for each type of NW node 10a from the operation system 30a, and creates a configuration change time table using the acquired configuration change time information.
  • the table storage unit 26 stores a setting change time table created by the table creation unit 25.
  • the table storage unit 26 is configured using a storage device such as a magnetic storage device or a semiconductor storage device.
  • the setting change time acquisition unit 21a acquires the setting change time information of each NW node 10a connected to the NW controller 20a for each NW node 10a. Specifically, first, the setting change time acquisition unit 21a requests each NW node 10a connected to the NW controller 20a to report type information. The setting change time acquisition unit 21a acquires the setting change time information of each NW node 10a based on the type information obtained from each NW node 10a and the setting change time table stored in the table storage unit 26. Obtained for each node 10a.
  • the setting change time acquisition unit 21a may request a report of type information only from the NW node 10a whose type is not yet known by the NW controller 20a, or may request a report of type information from all NW nodes 10a. You may request that information be reported. As a result, the NW node 10a, which has received a request to report type information from the NW controller 20a, reports the type information to the NW controller 20a. Note that the setting change time acquisition unit 21a may acquire information on the type of each NW node 10a connected to the NW controller 20a from the operation system 30a.
  • FIG. 6 is a flowchart showing the flow of the execution cycle setting process performed by the NW controller 20a in the third embodiment.
  • the execution cycle setting process shown in FIG. 6 is executed at the timing when the NW controller 20a is activated, when a new NW node 10a is connected, or when an instruction from an operator (for example, an instruction from the operation system 30a) is received. is executed.
  • the table creation unit 25 acquires setting change time information for each type of NW node 10a from the operation system 30a.
  • the table creation unit 25 creates a settings change time table using the acquired settings change time information (step S401). Specifically, the table creation unit 25 creates a setting change time table by associating the setting change time information for each type of NW node 10a obtained from the operation system 30a with the type of NW node 10a.
  • the table creation unit 25 stores the created setting change time table in the table storage unit 26.
  • the setting change time acquisition unit 21a collects information on the type of each NW node 10a connected to the NW controller 20a (step S402).
  • the configuration change time acquisition unit 21a acquires the configuration change time information of each NW node 10a based on the collected type information of each NW node 10a and the configuration change time table stored in the table storage unit 26. (Step S403). Specifically, first, the setting change time acquisition section 21a reads out the setting change time table stored in the table storage section 26. Then, the configuration change time acquisition unit 21a refers to the type item in the read configuration change time table and acquires the configuration change time information associated with the collected type of each NW node 10a for each NW node 10a. The setting change time acquisition unit 21a outputs the acquired setting change time information of each NW node 10a to the execution cycle determining unit 22. After that, the processing from step S102 onwards is executed.
  • the setting change time acquisition unit 21a may collect the reported type information.
  • the setting change time acquisition unit 21a acquires type information from each NW node 10a, and changes settings based on the acquired type information of each NW node 10a.
  • Setting change time information is acquired for each NW node 10a by referring to the time table. Thereby, setting change time information can be acquired using a method different from that in the first embodiment.
  • the NW controller 20a determines an execution cycle based on the setting change time information obtained using a method different from that in the first embodiment, and collects quality information from each NW node 10a at the determined execution cycle.
  • the settings of each NW node 10a are controlled based on the quality information of each NW node 10a. As a result, effects similar to those of the first embodiment can be obtained.
  • the configuration change time acquisition unit 21a refers to the configuration change time table and acquires the configuration change time information of each NW node 10a.
  • the setting change time acquisition unit 21a obtains the setting change time information of each NW node 10a by inquiring the operation system 30a about the setting change time corresponding to the type of NW node 10a. may be configured to obtain.
  • the NW controller 20a does not need to include the table creation section 25 and the table storage section 26. Furthermore, the NW controller 20a does not perform the process of step S401 in FIG.
  • the setting change time acquisition unit 21a acquires setting change time information for each NW node 10a by inquiring the operation system 30a about the collected setting change time corresponding to the type of each NW node 10a. .
  • the setting change time acquisition unit 21a acquires setting change time information for each NW node 10a by inquiring the operation system 30a about the collected setting change time corresponding to the type of each NW node 10a.
  • Non-temporary recording medium Some or all of the functional units of the NW controllers 20 and 20a described above are stored by a processor such as a CPU (Central Processing Unit) in a storage device having a non-volatile recording medium (non-temporary recording medium). It is realized as software by executing the program.
  • the program may be recorded on a computer-readable non-transitory recording medium.
  • Computer-readable non-temporary recording media include portable media such as flexible disks, magneto-optical disks, ROM (Read Only Memory), and CD-ROMs (Compact Disc Read Only Memory), and hard disks built into computer systems. It is a non-temporary recording medium such as a storage device such as.
  • Some or all of the functional units of the NW controllers 20 and 20a described above are, for example, LSI (Large Scale Integrated Circuit), ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), or FPGA (Field Programmable Gate). It may also be realized using hardware including an electronic circuit or circuitry using an array or the like.
  • the present invention can be applied to communication systems that collect network quality information.

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Abstract

Un dispositif de commande de réseau selon la présente invention comprend : une unité d'acquisition de temps de changement de réglage qui acquiert des informations de temps de changement de réglage indiquant le temps nécessaire pour changer le réglage de chacun d'un ou plusieurs dispositifs de nœuds à commander; une unité de détermination de cycle d'exécution qui détermine un cycle d'exécution pour collecter des informations de qualité et commander un ou plusieurs dispositifs de nœuds sur la base des informations de temps de changement de réglage acquises; une unité de collecte de qualité qui collecte des informations de qualité à partir du ou des dispositifs de nœuds lors du cycle d'exécution déterminé par l'unité de détermination de cycle d'exécution; et une unité de commande d'analyse qui commande les réglages de chaque dispositif de nœud sur la base des informations de qualité sur chaque dispositif de nœud collectées par l'unité de collecte de qualité lors du cycle d'exécution déterminé par l'unité de détermination de cycle d'exécution.　
PCT/JP2022/033544 2022-09-07 2022-09-07 Dispositif de commande de réseau et procédé de commande WO2024053009A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003026222A1 (fr) * 2001-09-12 2003-03-27 Fujitsu Limited Appareil de commande de surveillance de reseau
JP2012529808A (ja) * 2009-06-12 2012-11-22 テレフオンアクチーボラゲット エル エム エリクソン（パブル） パケット交換網における遅延の監視

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003026222A1 (fr) * 2001-09-12 2003-03-27 Fujitsu Limited Appareil de commande de surveillance de reseau
JP2012529808A (ja) * 2009-06-12 2012-11-22 テレフオンアクチーボラゲット エル エム エリクソン（パブル） パケット交換網における遅延の監視

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