JP5063726B2 - Configuration control method for virtual node device - Google Patents

Description

  The present invention provides a virtual node device for realizing network virtualization that dynamically provides a virtual network as requested in response to a request from a user and allows a plurality of virtual networks to coexist on one physical network. It relates to the configuration control method.

  In recent years, research and development of network virtualization technology has been active in Japan, North America and Europe. The network virtualization technique is a technique for dynamically providing a virtual network as requested in response to a request from a user and allowing a plurality of virtual networks to coexist on one physical network.

  Some specific examples of network virtualization from 2000 to 2007 are known (for example, Non-Patent Documents 1 and 2).

  Non-Patent Documents 1 and 2 also include a virtual network group for connecting between computer groups constituting the computer environment when dynamically providing a computer environment as requested according to a request from a user. Describes the technology to be provided. However, there are a wide variety of virtual network implementation methods (for example, Non-Patent Documents 3 to 6). Even if any of these non-patent documents 3 to 6 is selected as a basic technology, a virtual network can be finally realized.

  That is, Non-Patent Documents 1 and 2 guarantee the quality level by controlling the communication bandwidth of the virtual network and the propagation delay time in a large-scale computer environment called a cloud computing in which a large number of computer groups are combined. Thanks to Non-Patent Documents 1 and 2, cooperation processing between computers connected by them can be executed smoothly and systematically, and a large-scale computer environment can guarantee a high level of processing capability.

  In Non-Patent Documents 1 and 2, a virtual network is set, deleted, or changed through control of a node device group through which the virtual network passes. Node devices include optical add / drop devices, optical cross-connect devices, SONET / SDH (Synchronous Optical Network / Synchronous Digital Hierarchy) transmission devices, SONET / SDH cross-connect devices, layer 2 switches, layer 3 switches, MPLS-TP (Multiprotocol Label) Switching-Transport Profile) is a switch, router, computer, or server such as a layer 4-7 switch.

  However, the user can use the virtual network but cannot operate it. This is because if a user changes the configuration of a node device group that passes through the virtual network, the change may affect the virtual network of other users. Therefore, the administrator of the physical network and the virtual network does not allow the user to operate the virtual network, but listens to the user's intention, and the management / control system owned by the administrator operates the virtual network.

  However, another network virtualization technology also appeared at the same time. In addition to the technologies of Non-Patent Documents 1 and 2, the network virtualization technology describes a technology for dynamically creating a virtual node device, that is, a virtual node device, inside each node device group through which the virtual network passes. ing. A virtual node device group is also provided to the user. The concept of a virtual node device has existed for a long time, and has already been sold as a product since the early 2000s with the technology of virtual routers and logical routers.

  The characteristics of the virtual node device are as follows. Even if the virtual node device of a certain user is changed in a certain node device, the virtual node device of another user is not affected by the change. Furthermore, a CPU (central processing unit), memory size, storage size, and physical bandwidth of an interface can be assigned to each virtual node device.

  Therefore, the processing capability of the node device can be divided and assigned to each virtual node device group, and the processing capability can be defined or guaranteed for each virtual node device. In general, when the node device is a router, the virtual node device is also a router, and when the node device is a layer 2/3 switch, the virtual node device is also a layer 2/3 switch. That is, the virtual node device inherits the characteristics of the node device.

  Thanks to the technology called the virtual node device, the user can freely operate the virtual network itself by controlling the virtual node device group. New network virtualization technologies have appeared since 2008 (see, for example, Non-Patent Documents 7 to 9).

  The Node sliver described in Non-Patent Document 9 is a virtual node device, and the Link Sliver is a virtual link that connects the virtual node devices.

  A notable point of the technologies described in Non-Patent Documents 7 to 9 is that the virtual node device does not depend on the characteristics of the node device. For example, when the node device is a server, the virtual node device can be a router, a layer 2 switch, or a server.

  Furthermore, the user of the virtual node device can obtain and operate the virtual network according to his / her own request without depending on the physical infrastructure. For example, when a user uses an unprecedented layer 2 or layer 3 protocol in a virtual network, the user controls the virtual node device in accordance with the layer 2 or layer 3 protocol used. Thus, a virtual network compliant with the new protocol can be generated.

  FIG. 8 is a block diagram illustrating a configuration example of a general network and a virtual network. The existing network virtualization technology introduced in Non-Patent Document 9 will be described in detail with reference to FIG. The node devices 1 to 3 are connected to other node devices by physical links and are also connected to a user-related network (NW) by a physical link (solid line), and a main signal flows. The node devices 1 to 3 operate the virtual node devices 1a to 3a called “node sliver”, operate the virtual link (dotted line) called “link sliver”, and perform virtual communication between the virtual node devices 1a to 3a via physical links. Connect with a link.

  The main signal flowing between the two user-related networks is transferred through the virtual network via the virtual node device group and the virtual link group. The node apparatuses 1 to 3 are also connected to the network management system 5 and exchange management / control messages. The network management system 5 receives a virtual network operation request from a user and controls the virtual network based on the operation request.

  FIG. 9 is a block diagram illustrating a configuration example of the node apparatuses 1 to 3 according to the related art. The physical unit 10 is a common part of the node devices 1 to 3 and is a physical port, wiring between physical ports, or the like. The free resources 12 of the virtual function unit 11 are CPU, memory, storage, or similar resources. The management unit 13 exchanges management / control messages with the network management system 5, dynamically allocates free resources 12 of the virtual function unit 11 based on the management / control messages, and uses the reserved resources to The function unit 11 is generated. The virtual function unit 11 includes one or more virtual node devices and one or more virtual links.

  FIG. 10 is a sequence diagram illustrating an example of a virtual network generation operation according to the related art. FIG. 11 is a conceptual diagram showing an example of a conventional virtual network generation request message. FIG. 12, FIG. 13, FIG. 14 or FIG. 15 is a conceptual diagram showing an example of the configuration control command. As shown in FIG. 10, first, the user 20 transmits a virtual network generation request message shown in FIG. 11 to the network management system 5. The network management system 5 analyzes the content of the received virtual network generation request message and confirms information on the related node device.

  Next, the network management system 5 edits the content of the virtual network generation request message received for each of the related node devices 1 to 3. The network management system 5 transmits the edited virtual network generation request message to the related node devices 1 to 3. Each of the node devices 1 to 3 generates the virtual function unit 11 based on the received virtual network generation request message.

  On the other hand, FIG. 16 is a sequence diagram showing an example of the virtual network deletion operation in the prior art. FIG. 17 is a conceptual diagram showing an example of a virtual network deletion request message according to the prior art. As shown in FIG. 16, the flow of the virtual network deletion process is almost the same as the flow of the generation process. However, the network management system 5 manages the correspondence between the name of the virtual network and the associated node device during the virtual network generation process. Therefore, in the deletion process, the user 20 only has to notify the network management system 5 of only the name of the virtual network as a virtual network deletion request message shown in FIG.

  The network management system 5 that has received the virtual network deletion request message refers to its own database, extracts information on the related node device group, and requests the extracted related node devices 1 to 3 to request virtual network deletion. Send a message. On the other hand, each of the node devices 1 to 3 manages the virtual function unit 11 associated with the name of the virtual network, that is, the virtual node devices 1a to 1c and the virtual links (dotted lines) in a database. Therefore, each of the node devices 1 to 3 having received the virtual network deletion request message deletes the corresponding virtual node devices 1a to 1c and the virtual link (dotted line) based on the name of the virtual network.

  The management unit 13 in the node devices 1 to 3 performs settings so that the user 20 can remotely operate the virtual node devices 1a to 1c along with the generation of the virtual node devices 1a to 1c. For example, the management unit 13 generates a management port for the virtual node devices 1a to 1c, assigns an IP address to the management port, and starts a Telnet server in the virtual node devices 1a to 1c.

  On the other hand, the management unit 13 reports the IP address of the management port to the network management system 5. Further, the network management system 5 notifies the user 20 of the IP address of the management port. Thereby, the user 20 can access the Telnet server via the management port using the Telnet client and control the configurations of the virtual node devices 1a to 1c as shown in the lower part of FIG. The user 20 transmits the command content of FIG. 12, FIG. 13, FIG. 14, FIG. 15 or a part of them to the virtual node devices 1a to 1c via Telnet, and the command content is transmitted to the configuration of the virtual node devices 1a to 1c. Write. Thereby, the configuration of the virtual node devices 1a to 1c is changed.

Atsuko Takebo, et al. "Core location experiment of computational resources and optical path network resources in the grid" SACSIS (Symposium on Advanced Computing systems and Infrastructures) 2006 Atsuko Takefusa, et al. “Computer / Network Resource Location Experiment between Japan and the United States through Middleware Collaboration” 164th Computer Architecture and 109th High Performance Computing Joint Research Presentation IETF RFC3031, "Multiprotocol Label Switching Architecture" 2001 IETF RFC3985, `` Pseudo Wire Emulation Edge-to-Edge (PWE3) Architecture '' 2005 IEEE 802.1Q `` IEEE Standards for Local and Metropolitan Area Networks: Virtual Bridged Local Area Networks '' 2005 IETF RFC2764, "A Framework for IP Based Virtual Private Networks" 2000 Hideyuki Shimonishi, et al. “Construction of virtual infrastructure using OpenFlow technology”, New Generation Network Workshop 2009, 2009 Satoshi Iwata, et al. “New Generation Network Infrastructure Technology-OpenFlow Switching Technology”, IEICE Technical Report, vol. 109, no. 273, NS2009-103, pp. 1-6, 2009 Akihiro Nakao, “Network Virtualization and Applications as Architecture”, New Generation Network Workshop 2009, 2009

  However, in the conventional techniques represented by the above-mentioned Non-Patent Documents 7 to 9, the user 20 is responsible for controlling the configuration in the virtual node devices 1a to 3a, and the user 20 is burdened with operating the virtual network. large.

This problem develops into the following problem as seen from the general user 20.
The first problem is as follows. The general user 20 may not have knowledge for setting the virtual node devices 1a to 3a. For such a user 20, the network management system 5 uses the virtual node devices 1a to 3a. It is desirable to automatically control the configuration inside. As a configuration of general virtual node devices 1a to 3a, a routing protocol, a routing table, a forwarding protocol, a forwarding table, an interface IP address, a MAC address, and the like need to be set.

  The second problem is as follows. The virtual node devices 1a to 3a desired by general users 20 are an optical add / drop device, an optical cross-connect device, a SONET / SDH transmission device, a SONET / SDH cross-connect device, a layer 2 switch, a layer 3 switch, and MPLS-TP. It can be considered as either a switch, a router, or a server such as a computer or a layer 4-7 switch. In other words, the general user 20 does not want a virtual node device having new functionality that has never existed before, and it is desirable that the network management system 5 automatically controls the configurations in the virtual node devices 1a to 3a. It is.

  The third problem is as follows. When the configuration setting specifications of the virtual node devices 1a to 3a are different for each of the node devices 1 to 3, the user 20 must be familiar with a method for controlling various configurations. However, in connection with the first problem, it is desired that the configuration in the virtual node devices 1a to 3a is automatically controlled by the network management system 5.

  That is, the network management system 5 receives the specifications of the virtual node devices 1a to 3a from the user 20, that is, the type of the virtual node devices 1a to 3a, the routing protocol, the routing table, the forwarding protocol, the forwarding table, the interface IP address, and the MAC. There is a need for a method of confirming the user's 20 desire such as an address and automatically setting the configuration of the virtual node devices 1a to 3a based on the user's 20 desire.

  The present invention has been made in view of such circumstances, and its purpose is to provide a virtual node device configuration that can be easily set by a network management system based on the contents of notification from a user. The object is to provide a configuration control method for a node device.

In order to solve the above-described problem, the present invention is adapted to a software module executed by executing one of the software management module and a module management unit that stores a plurality of software modules for each type of node device. a plurality of node devices and a virtual function unit which operates as a type of virtual node device, the plurality of nodes equipment management and controlling, based on a request from the user, the virtual network between the node devices generation, or in a network comprising a network management system that performs the control of deleting the a configuration control method for a virtual node device that controls the configuration of the virtual node device, the network management system configuration control request from the user Config control request to receive messages And Shin steps, and configuration control request analyzing step of the network management system analyzes the content of the configuration control request message, said network management system based on an analysis result of the configuration control request message, each of the associated said node device A configuration control request transmitting step for transmitting a configuration control request for controlling a configuration of the virtual node device including information indicating a type of the virtual node device to be realized by the node device; and wherein said sent from the network management system is included in the configuration control request based on the information indicating the type of the virtual node device, install the corresponding said software modules stored in the module management unit to the virtual functional unit A configuration control method for a virtual node device characterized by comprising a configuration control step of operating the node device as a virtual node device by executing.

The present invention, in the above invention, in the configuration control request transmitting step, the to the node device network management system related, further configuration control request containing the parameters of the respective interface to be set in the virtual node device In the configuration control step , each node device sets an interface parameter included in the configuration control request in each virtual node device.

According to the present invention, in the above invention, in the configuration control request transmission step , a configuration control request further including a parameter of a protocol to be set in each virtual node device for the node device related to the network management system In the configuration control step , each node device sets a protocol parameter included in the configuration control request in each virtual node device.

  According to the present invention, the configuration of the virtual node device can be automatically controlled by the network management system in response to a request from the user.

It is a block diagram which shows the structure of the node apparatuses 1-3 by this embodiment. It is a block diagram which shows the structure of the node apparatuses 1-3 by this embodiment. It is a flowchart for demonstrating the configuration automatic control method of a virtual node apparatus by this embodiment. It is a sequence diagram which shows the configuration automatic control procedure by this embodiment. It is a conceptual diagram which shows an example of the configuration control request message by this embodiment. It is a conceptual diagram which shows an example of the configuration control request message by this embodiment. It is a conceptual diagram which shows an example of the configuration control request message by this embodiment. It is a block diagram which shows the example of 1 structure of a general network and a virtual network. It is a block diagram which shows one structural example of the node apparatuses 1-3 by a prior art. It is a sequence diagram which shows an example of the virtual network production | generation operation | movement by a prior art. It is a conceptual diagram which shows an example of the virtual network production | generation request message by a prior art. It is a conceptual diagram which shows the example of the configuration control command by a prior art. It is a conceptual diagram which shows the example of the configuration control command by a prior art. It is a conceptual diagram which shows the example of the configuration control command by a prior art. It is a conceptual diagram which shows the example of the configuration control command by a prior art. It is a sequence diagram which shows an example of the virtual network deletion operation | movement in a prior art. It is a conceptual diagram which shows an example of the virtual network deletion request message by a prior art.

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

  The present invention is characterized in that the network management system receives a configuration control request from a user as a trigger, analyzes the contents thereof, and automatically controls the configuration of the virtual node. As a result, it is possible to reduce the load for the user to set and control the virtual network. The automatic configuration control of virtual nodes is as follows: (1) In each node device, a module management unit that manages the virtual node device as a module is provided, and the module management unit copies or installs the module to the virtual function unit. In some cases, each node device installs and executes an appropriate module in the virtual function unit via a network. Note that the present application uses the network management system described in Non-Patent Document 9 as the basis of a virtual network.

  The network and the virtual network according to the present embodiment are the same as those shown in FIG. However, a network different from FIG. 8 and a virtual network may be used.

  FIG. 1 is a block diagram illustrating a configuration example of the node device according to the present embodiment. FIG. 2 is a block diagram showing another configuration example of the node device according to the present embodiment. The node devices 1 to 3 are routers, layer 2 switches, layer 3 switches, layer 4-7 switches, servers, and the like. However, in the present embodiment, in order to simplify and clarify the description, the description will be made on the assumption that the virtual node device is a server. Physical resources are a CPU, memory, storage, and network interface card. The management unit 13 is a virtual node device operation system or a virtual machine monitor. The virtual function unit 11 is a guest operation system, a virtual machine, and a virtual link.

  The virtual link in the present embodiment is a Tag VLAN tunnel generated by IEEE 802.1q Virtual LAN, or a GRE tunnel generated by IETF RFC2784 Generic Routing Encapsulation (GRE). However, it may be a virtual link based on a technology different from IEEE 802.1q Virtual LAN or IETF RFC2784 GRE. The free resources 12 of the virtual function unit are virtual hardware such as a virtual CPU, memory, storage, and network card.

  In FIG. 1, a module management unit 40 exists in the management unit 13, and the module management unit 40 manages software such as a router module 41, a layer 2 switch module 42, and a layer 3 module 43. For example, the router module 41 is a software router such as GNU Zebra. The management unit 13 selects an appropriate module according to a request from the network management system 5 from the modules managed by the module management unit 40, and copies or installs the module to the virtual function unit 11 and executes it. The virtual function unit 11 operates as a device of the executed module. For example, when the layer 2 switch module 42 is executed, the virtual function unit 11 operates as a layer 2 switch.

  On the other hand, FIG. 2 is an example when the module management unit 40 shown in FIG. 1 is mounted on the external communication device 50. The management unit 13 in the node devices 1 to 3 accesses the module management unit 40 of the communication device 50 via the network, and installs an appropriate module according to the request from the network management system 5 to the virtual node device via the network. And execute the module on the virtual node device.

  The configuration of the node devices 1 to 3 shown in FIG. 1 or FIG. 2 is an example, and the configuration of the node devices 1 to 3 of this embodiment may be either the configuration shown in FIG. 1 or FIG. 1 or 2 may be different from that shown in FIG. Moreover, although this embodiment reduces the load concerning the user's 20 configuration setting by selecting the module in the node apparatuses 1 to 3, the network management system 5 is requested by the user 20. And the network management system 5 may execute the configuration of the virtual node device.

  Next, the operation of the virtual node device configuration automatic control method according to the present embodiment will be described. Note that the virtual network generation procedure according to the present embodiment is the same as that of the above-described prior art, and thus description thereof is omitted (see FIG. 10). The virtual network generation request message is also the same as that of the above-described prior art, and thus description thereof is omitted (see FIG. 11). However, a virtual network generation procedure or a virtual network generation request message different from those in FIGS. 10 and 11 may be used. Also, the virtual network deletion procedure and the virtual network deletion request message according to this embodiment are the same as those in the above-described conventional technology, and thus description thereof is omitted (see FIGS. 16 and 17). However, a virtual network deletion procedure or a virtual network deletion message different from those in FIGS. 16 and 17 may be used.

  In the present embodiment, after the virtual node device is generated by the management unit 13 in the node devices 1 to 3, the configuration is not controlled by the user 20, but the network management system 5 sets each configuration of the virtual node device group. Automatic control. Hereinafter, automatic control of each configuration of the virtual node device group will be described.

  FIG. 3 is a flowchart for explaining the automatic configuration control method of the virtual node device according to the present embodiment. FIG. 4 is a sequence diagram showing a configuration automatic control procedure according to this embodiment. First, the network management system 5 receives the configuration control request message sent from the user 20 in the configuration control request message receiving step (step S1). Next, in the configuration control request analysis step, the contents of the configuration control request message received by the network management system 5 are analyzed (step S2).

  Here, FIG. 5 is a conceptual diagram showing an example of the configuration control request message. As shown in FIG. 5, the contents of the configuration control request message include the type of each virtual node device or information similar thereto. Further, the contents of the configuration control request message include the interface information of each virtual node device as shown in FIG.

  In particular, the configuration control request message sent from the user 20 to the network management system 5 may include only the parameters depending on the settings shown in FIGS. 12 and 13, and in that case, as shown in FIG. It becomes information of contents. That is, as shown in FIG. 6, the name of the virtual network, the name of the virtual node device, the associated node device, the virtual node device type, the name of the virtual port, the interface type, the address, and the subnet mask for each virtual node device Etc. Here, the parameters depending on the settings shown in FIGS. 12 and 13 are substantially the same. Accordingly, the user 20 can request the network management system 5 to perform interface control based on a desired interface parameter without considering the type of the virtual node device.

  Further, the content of the configuration control request message includes the protocol information of each virtual node device as shown in FIG. 14 or FIG. 15 as in the prior art. In particular, the configuration control request message sent from the user 20 to the network management system 5 may include only the parameters depending on the settings shown in FIGS. 14 and 15. In this case, the contents as shown in FIG. It becomes information of. That is, as shown in FIG. 7, the name of the virtual network, the name of the virtual node device, the associated node device, virtual node device type, virtual port name, interface type, address, and subnet mask for each virtual node device , The name of the protocol to be driven, the name of the interface associated with the protocol, etc. The parameters depending on the settings shown in FIGS. 14 and 15 are substantially the same.

  Next, in the configuration control request transmission step, the network management system 5 generates a new configuration control request message based on the analysis result of the configuration control request message, and sends the generated configuration control request message to each node device 1 to 1. 3 (step S3).

  Next, in the configuration control step, each of the node devices 1 to 3 having received the configuration control request message controls the configuration of each virtual node device according to the configuration control request message (step S4).

  That is, the node devices 1 to 3 execute a desired module by copying or installing it in the virtual node device according to the virtual node device type included in the configuration control request message. As a result, when the virtual node device desired by the user 20 is an existing device such as a router or a layer 2 switch, the user 20 can easily communicate the type of the virtual node device to the network management system 5 and perform network management. The system 5 can easily control the type of the virtual node device.

  In addition, the node devices 1 to 3 set the interface of the virtual node device according to the interface parameter set to the virtual node device included in the configuration control request message. Thereby, the network management system 5 can control the parameters of the interface of the virtual node device based on the request of the user 20.

  In addition, the node devices 1 to 3 set the protocol of the virtual node device according to the protocol parameter set to the virtual node device included in the configuration control request message. Thereby, the network management system 5 can control the protocol parameters of the virtual node device based on the request of the user 20.

  In the present embodiment, when the configuration control request message does not include a protocol parameter to be set in the virtual node device, the virtual node device protocol is not automatically set. In the present embodiment, when the interface parameter to be set in the virtual node device is not included in the configuration control request message, the interface of the virtual node device is not automatically set. In the present embodiment, when the virtual node device type is not included in the configuration control request message, the module for determining the device type on the virtual node device is not automatically executed. That is, it is not always necessary to include all information, and the configuration of each virtual node device is controlled according to the information included in the configuration control request message.

  In this embodiment, the configuration control request message from the user 20 to the network management system 5 may include the contents of the configuration control of a plurality of virtual node devices, and the configuration control of one virtual node device. May contain only the contents of Similarly, the configuration control request message from the network management system 5 to the node devices 1 to 3 may include the content of configuration control of a plurality of virtual node devices, and the content of configuration control of one virtual node device. May contain only.

  Further, regarding the configuration control request message from the network management system 5 to the node devices 1 to 3, the node devices 1 to 3 may simply relay and pass them to the virtual node device.

  The configuration control request message from the user 20 to the network management system 5 and the configuration control request message from the network management system 5 to the node devices 1 to 3 include the virtual node device type and the interface to be set in the virtual node device. The parameter and the protocol parameter set in the virtual node device may be transmitted.

  According to the above-described embodiment, even if the user 20 is not familiar with the method of controlling various configurations, the network management system 5 performs virtual processing of the node devices 1 to 3 in response to a request from the user 20. The configuration of the node device can be automatically controlled. That is, it is possible to improve the convenience of virtual network operation as seen from the user.

1 to 4 node devices 1a to 4a virtual node device 5 network management system 6 user terminal 10 physical unit 11 virtual function unit 13 management unit 40 module management unit 50 communication device S1 configuration control request reception step S2 configuration control request analysis step S3 configuration Control request transmission step S4 Config control step

Claims (3)

A module management unit that stores a plurality of software modules for each type of node device, and a virtual function unit that operates as a virtual node device of a type corresponding to the executed software module by executing one of the software modules; network management system and a plurality of node devices, which manages and controls the plurality of nodes equipment, based on a request from the user, executes the control of the generation of a virtual network, or deleted between the node devices comprising A virtual node device configuration control method for controlling the configuration of the virtual node device in a network comprising:
A configuration control request receiving step in which the network management system receives a configuration control request message from a user;
A configuration control request analyzing step in which the network management system analyzes the content of the configuration control request message;
Said network management system based on an analysis result of the configuration control request message, for each of the associated said node device, the virtual node device including information indicating a type of virtual node device to be implemented in the node apparatus A configuration control request transmission step for transmitting a configuration control request for controlling the configuration;
Based on the information indicating the type of the virtual node device included in the configuration control request transmitted from the network management system by each node device, the software module stored in the corresponding module management unit is changed to the virtual function. A configuration control step of causing the node device to operate as a virtual node device by being installed in a unit and executing the virtual node device configuration control method. In the configuration control request transmission step,
Wherein with respect to the node device network management system related, and transmit respective further configuration control request containing the parameters of the interface to be set in the virtual node device,
In the configuration control step,
Each node device sets a parameter of an interface included in the configuration control request in each virtual node device.
The configuration control method for a virtual node device according to claim 1 , wherein: In the configuration control request transmission step,
A configuration control request further including a parameter of a protocol to be set in each virtual node device to the node device related to the network management system;
In the configuration control step,
In each virtual node device , each node device sets a protocol parameter included in the configuration control request.
The configuration control method for a virtual node device according to claim 1 or 2 , characterized in that:

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