KR20230021035A - Devices and method for building group networks in Software Definition Data Center - Google Patents

Abstract

The present invention relates to a device and method for building a group network in a software definition center. In addition, according to the present invention, the device for building a group network in a software definition center comprises: a virtual data center design unit which allows a user granted a virtual data center user authority to configure components and a plurality of networks of a virtual data center; a service design unit which allows the configuration of a server for WEB/WAS/DB purposes in a logical network configuration communicating through VLANs corresponding to the plurality of networks configured by the virtual data center design unit; and a group network design unit which allows the plurality of networks constructed by the virtual data center design unit to be network-interconnected by a physical L2 network switch. According to the present invention, when building a group network through SDDC, productivity/speed can be improved and cost reduction can be achieved.

Description

Devices and method for building group networks in Software Definition Data Center}

The present invention relates to an apparatus and method for constructing a group network in a software defined center.

The 'software-defined concept' that emerged as SDN quickly spread beyond software-defined networks to software-defined storage, software-defined data centers, and software application services, expanding into the concept of SDx (Software Defined Anything/Everything).

The concept defined to realize a flexible infrastructure through software has been gradually expanded, and recently it has meaning to encompass fields beyond infrastructure, such as security, as well as business and services, along with infrastructure management and policies.

At this time, what is important is that flexibility can be increased through 'software definition' and programmability can be secured according to a standard independent of a specific vendor.

Agility and interoperability are two important philosophies that represent SDx. In the case of the former, specific methods are slightly different for each field, such as network and storage, but it is developing in a trend toward greater flexibility.

On the other hand, in the case of the latter, related businesses are showing various movements such as promoting the SDx initiative to strengthen standards in the market.

A software-defined data center (SDDC) is a system that aggregates and services various infrastructures with such software definition.

The heart of SDDC is integration. Server, storage, and network equipment are all operated and managed efficiently based on software definition, and both storage and network functions are implemented on the server infrastructure as open SW.

SDDC means 'software-defined' the entire data center and breaks down the barriers that were managed by dividing it into individual components. Previously, it was tied to the function of the equipment, so it had to be accessed by equipment. However, in the SDDC environment, there is no need to divide the access by equipment for data center management. Through an integrated management system that bundles each function into SW, it is managed through a holistic approach.

SDDC like this naturally entered the SDx realm as the main elements of the data center, from storage to network, could be operated as software. SDDC can respond flexibly with software without adding physical storage and network. For this, specific utilization plans of various business models are needed.

As such, SDDC refers to realizing deployment, operation, and management by automating the components of various data sensors with software through an application programming interface (API).

However, due to the wide scope of the data center, there are difficulties in sustainable development without a specific structure and a business model that includes a method for realizing related new technologies.

Domestic Publication No. 10-2017-65166 Domestic Registration No. 10-1535502

The present invention has been made to solve the above problems, and provides a group network construction apparatus and method in a software definition center capable of defining an advanced target structure and presenting an empirical business model through application of related technologies. there is

The apparatus of the present invention includes a virtual data center (vDC) design unit that allows a user to whom virtual data center user rights are granted to configure components of the virtual data center and a plurality of networks; a service design unit configured to configure a server for WEB/WAS/DB purpose of a logical network configuration that communicates with a VLAN corresponding to a plurality of networks configured in the virtual data center design unit; and a group network designing unit that allows the multiple networks configured by the virtual data center designing unit to interwork with each other through a physical L2 network switch.

In addition, the virtual data center design unit of the device of the present invention provides components composed of icons and a canvas so that a user granted virtual data center user rights can configure components and networks of the virtual data center.

In addition, the virtual data center design unit of the device of the present invention configures a basic private network (Private Network (L2)) as a network in the "Region" of the components of the canvas by a user granted user rights of the virtual data center, , When configuring an additionally separated network, a private network icon is added so that an additional private network (L2) can be configured within the area.

In addition, the virtual data center design unit of the device of the present invention may add a "Public" component to a basic private network or an additional private network requiring Internet linkage for a customer service by a user who has been granted user rights of the virtual data center. and grant a public IP from the defined pool.

In addition, the virtual data center design unit of the device of the present invention includes a public network, a plurality of firewalls (FW), a web application firewall (WAF), and a load balancer in the basic private network and the additional private network. (LB: Load Balancer) and virtualized L2 switch (Open Vswitch, OVS).

In addition, the virtual data center design unit of the apparatus of the present invention installs external network components between a basic private network and an additional private network and installs internal network components in an additional private network.

In addition, the service design unit of the apparatus of the present invention configures a WEB server in an external network component, and configures a WAS server and a DB server in an internal network component.

In addition, the service design unit of the device of the present invention uses a component composed of standardized images as a template.

Meanwhile, the method of the present invention includes the steps of (A) enabling a virtual data center design unit to configure a plurality of networks with components of a virtual data center by a user to whom a virtual data center user right is granted; (B) allowing the service design unit to configure a server for WEB/WAS/DB purpose of a logical network configuration that communicates with a VLAN corresponding to a plurality of networks configured in the virtual data center design unit; and (C) allowing the group network design unit to interwork the plurality of networks configured by the virtual data center design unit through a physical L2 network switch.

In addition, in the step (A) of the method of the present invention, the virtual data center design unit provides components composed of icons and a canvas so that users granted virtual data center user rights can use the components and networks of the virtual data center. make it configurable.

In addition, in step (A) of the method of the present invention, in (A-1) the virtual data center design unit, a user who has been granted user rights of the virtual data center is connected to a basic private network (Private Configuring Network (L2)); and (A-2) configuring an additional private network (L2) in an area by adding a private network icon when the virtual data center design unit configures an additionally separated network.

In addition, in step (A) of the method of the present invention, in (A-3) the virtual data center design unit, a user to whom user rights of the virtual data center have been granted connects to a basic private network or an additional private network that requires Internet linkage for customer service. Allows adding a “Public Network” component and further includes granting a public IP from a defined pool.

In addition, the virtual data center design unit of the method of the present invention includes a public network (public), a plurality of firewalls (FW), a web firewall (WAF: Web Application Firewall), and a load balancer in the basic private network and the additional private network. (LB: Load Balancer) and virtual L2 switch ((Open Vswitch, OVS) should be included.

In addition, the step (A) of the method of the present invention includes the steps of (A-4) the virtual data center design unit installing an external network component between a basic private network and an additional private network and installing an internal network component in an additional private network. contains more

In addition, in step (B) of the method of the present invention, the service design unit configures a WEB server in an external network component, and configures a WAS server and a DB server in an internal network component.

In addition, in step (B) of the method of the present invention, the service design unit uses a component composed of a standardized image as a template.

In the present invention, it is possible to preoccupy the Technical Architecture by presenting an empirical business model for SDDC.

It is possible to take the lead in the upcoming SDx market by first presenting the convergence structure of scattered next-generation technologies (SDN, NFV, and Cloud) and possessing related business models.

In particular, it is applied to the group network network (Private LTE, etc.) business considering the experience of operating large-scale data centers, technological maturity as the largest cloud operator in Korea, and long-term technology development direction, so that it can preoccupy the technology structure compared to operators with common goals.

In addition, the present invention enables productivity/speed improvement and cost reduction when building a group network through SDDC.

In addition, in the present invention, group network construction through SDDC is separated into virtual networks through virtual networks/security equipment in a standard POD structure, and all resources of the entire SDDC are controlled and managed by a resource pool.

Compared to the existing legacy data center's average utilization rate of only 15%, SDDC uses 100% of its resources through virtualization, enabling the configuration of minimal physical equipment. From the existing prospective customer-based infrastructure investment, the initial investment cost reduction is realized from the perspective of usage-based expansion investment.

In addition, all infrastructure configuration and network control are automated through API to reduce leaf-time.

1 is a configuration diagram of a software definition center to which the present invention is applied.
2 is an exemplary view showing a canvas provided by the SDDC integrated management system when constructing vDC and network topology.
3 is a configuration diagram of an apparatus for building a group network in a software defined center according to an embodiment of the present invention.
4 is a flowchart of a method for building a group network in a software defined center according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating construction of external/internal network separation performed by the virtual data center design unit of FIG. 3 .
FIG. 6 is an exemplary view showing a process of service design for an external network and an internal network performed by the service design unit of FIG. 3 .
7 is an exemplary view showing a group network design process performed by the group network design unit of FIG. 3 .

The present invention can apply various transformations and can have various embodiments. Hereinafter, specific embodiments will be described in detail based on the accompanying drawings.

The following examples are provided to facilitate a comprehensive understanding of the methods, apparatus and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification. Terms used in the detailed description are only for describing the embodiments of the present invention, and should not be limiting. Unless expressly used otherwise, singular forms of expression include plural forms. In this description, expressions such as "comprising" or "comprising" are intended to indicate any characteristic, number, step, operation, element, portion or combination thereof, one or more other than those described. It should not be construed to exclude the existence or possibility of any other feature, number, step, operation, element, part or combination thereof.

In addition, terms such as first and second may be used to describe various components, but the components are not limited by the terms, and the terms are used for the purpose of distinguishing one component from another. used only as

Hereinafter, embodiments illustrating an apparatus for constructing a group network in a software defined center according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an apparatus for building a group network in a software defined center according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus for building a group network in a software defined center according to an embodiment of the present invention includes a software-defined data center (SDDC) integrated management system 100, a switching network 110, a private network 120, and a public network. (130), management network (140), NFV (Network Functions Virtualization) orchestrator (200), virtual network function (VNF: Virtual Network Function) (210-1 to 210-n), cloud orchestrator ( Cloud Orchestrator) (300), virtualization server (310), virtualization storage (320), virtualization switch (330), virtualization infrastructure manager (VIM: Virtual Infrastructure Manager) (400), virtualization network function infrastructure (NFVI: Network Functions Virtualization infrastructure) (500) is included.

In this configuration, the switching network 110, the private network 120, the public network 130, and the management network 140 constitute the physical network infrastructure 600, and the virtualization network function unit 210-1~ 210-n), virtualization server 310, virtualization storage 320, virtualization switch 330, virtualization infrastructure manager 400 and virtualization network function infrastructure 500 are virtual network infrastructure (Virtual Network Infra) (700) ) constitutes

The SDDC integrated management system 100 integrates each function of a server, storage, and switch into software to be operated and managed.

In this way, the SDDC integrated management system 100 ensures that all servers, storages, and switches are operated and managed on a software-defined basis to be efficient, and whether server functions, storage functions, or switches are all open software to be implemented on the server infrastructure do.

The SDDC integrated management system 100 is a portal concept that allows users to easily control the SDDC by integrating and managing information of each orchestrator (200, 300) and physical/virtual network infrastructure (600, 700). As a system, it can be operated/managed through UI & UX.

In addition, as shown in FIG. 2, the SDDC integrated management system 100 provides a canvas when constructing a vDC and network topology, thereby ensuring an intuitive and flexible configuration away from the concept of API/CLI-based construction and operation.

And, the NFV orchestrator 200 (NFV Orchestrator) virtualizes, manages, and deploys the main network/security equipment (VNF) of the data center.

The NFV orchestrator 200 virtualizes the physical network to configure the virtual network environment of the vDC and creates and controls the configuration of L2, L3, and L4 layer equipment and related network topology above the service level.

In addition, the NFV orchestrator 200 enables network path configuration (vXLAN) between vDCs instead of SDN technology, and flexibly configures and allocates various predefined physical networks to vDCs through the SDDC integrated management system 100 let it

On the other hand, the virtual network function units 210-1 to 210-n (Virtual Network Function) are network sets for supporting various application programs, and include EMSs that perform existing self-management systems.

These virtual network function units 210-1 to 210-n virtualize and provide network functions on the basis of the virtualized network function infrastructure 500 of general-purpose server hardware 500 (x86-based hardware) rather than expensive dedicated equipment. .

One virtual network functional unit (210-1 to 210-n) is a unit that performs a specific network function (eg, includes a firewall, DPI, EPC system, etc.), and in order to operate in the NFV environment, the following process must proceed.

(1) VNF on-broading step: Corresponds to a step in which a VNF is formally registered in a catalog through NFVO and a VM is created by a virtual infrastructure manager (VIM) 400.

(2) VNF Instantation step: This is a step of creating an instance capable of running the registered VNF, checking whether the requestor has the right to create it, and receiving allocated resources from VIM.

(3) Updating VNF instance: This is a step of replacing an existing VNF instance with a new on-broading instance. Updates are required in situations where required resources or QoS conversions occur or errors occur.

(4) VNF instance termination step: Corresponds to a step in which all resources and network connections used to terminate an operating instance are terminated.

Next, a Virtual Infrastructure Manager (VIM) 500 manages and controls computing, storage, and network resources used by the VNFs 210-1 to 210-n.

Here, resource management manages and distributes virtual/physical resources, manages and virtualizes the NFVI 500, and collects fault status and resource status information from the NFVI 500.

Openstack was used as the VIM (500).

In addition, the NFVI 500 is a physical hardware resource that supports computing, storage, and network functions, and supports virtualization and execution of VNFs 210-1 to 210-n.

The NFVI 500 includes all hardware and software for deploying, managing, and executing the VNFs 210-1 to 210-n.

The NFVI 500 is one entity that provides virtualized resources, both physical and virtual, from the viewpoint of the VNFs 210-1 to 210-n.

Here, the hardware resources refer to physical resources including computing, storage, and networks provided to the VNFs 210-1 to 210-n through a virtualization layer.

In addition, virtualized resources abstract physical resources through a virtualization layer and separate software from hardware.

Meanwhile, the cloud orchestrator 300 (Cloud Orchestrator) supervises management and deployment of all customer service resources (Computing, Storage, and Network) of a virtual data center (vDC). Then, a service network topology is created and controlled using a virtualization switch/router 330 between corresponding resources.

1 shows a virtualization server 310 and a virtualization storage 320 as corresponding customer service resources, and shows that a service network topology is created and controlled using a virtualization switch 330 .

3 is a configuration diagram of an apparatus for building a group network in a software defined center according to an embodiment of the present invention.

Referring to FIG. 3 , an apparatus for building a group network in a software defined center according to an embodiment of the present invention is composed of a virtual data center design unit 10, a service design unit 20, and a group network design unit 30. .

4 is a flowchart of a method for building a group network in a software defined center according to an embodiment of the present invention.

Referring to FIG. 4, the method for constructing a group network in a software defined center according to an embodiment of the present invention includes a virtual data center design step (S10), a service design step (S20), and a group network design step (S30). .

First, in the virtual data center design step (S10), the virtual data center design unit 10 allows a user to whom a virtual data center user right is granted to configure components and networks of the virtual data center through corresponding functions.

Here, the virtual data center is a concept that exists logically, and users who have been granted user rights of the virtual data center through the SDDC integrated manager can configure the components and networks of the virtual data center through the corresponding function. The main users can be organized as shown in the table below.

user role note Integrated manager SDDC integrated management menu definition / VDC use approval VDC user VDC network definition and configuration / service use approval service user Service definition and configuration integrated user VDC / Service Authority default user VDC / Application for service use

The virtual data center design unit 10 provides components composed of icons and a canvas in order to increase the flexibility of logical configuration and user accessibility. Users who have been granted user rights of the virtual data center are as shown in FIG. 5. Similarly, a basic private network (L2) 12 is configured as a network in “Region 1” 11 of the components of the canvas provided by the virtual data center design unit 10, and an additional When configuring a network separated by , a private network icon is added to configure an additional private network (L2) (13) in Region 1 (Region 1).

The basic private network (12) and the additional private network (13) basically consist of a closed network that does not interlock with the outside at all, and in case of physical/logical network interworking such as a wireless network or an in-house network, a separate dedicated line or overlay network is provided. interlock through

The virtual data center design unit 10 is a "Public" component for a basic private network 12 or an additional private network 13 that requires users who have been granted user rights of the virtual data center to connect to the Internet for customer service. and grants a public IP from the defined pool.

Further, as shown in FIG. 5 , the virtual data center design unit 10 places the external network component 14 between the basic private network 12 and the additional private network 13 to which the public network is assigned, and the additional private network. In (13), the internal network component 15 is located.

The installation of the external network component 14 between the basic private network 12 and the additional private network 13 and the installation of the internal network component 15 in the additional private network 13 are performed by input of a user authorized by the user of the virtual data center. It can be proceeded by or automatically executed.

In such a basic private network 12, a public network (public), a plurality of firewalls (FW: Firewall), a web firewall (WAF: Web Application Firewall), a load balancer (LB: Load Balancer), and a virtual L2 switch ( (Open Vswitch, OVS).

In addition, the additional private network 13 includes a plurality of firewalls (FW) and a virtual L2 switch. Although not shown here, the additional private network 13 may further include a web application firewall (WAF) and a load balancer (LB).

On the other hand, in the service design step (S20), the service design unit 20 is a WEB/WAS/DB purpose of a logical network configuration in which the user communicates with a VLAN corresponding to the network of the switch L2 configured in the virtual data center design unit 10. Configure the server, which is the same as the Cloud IaaS configuration.

In this regard, the service design unit 20 configures a WEB server in the external network component 14, and configures a WAS server and a DB server in the internal network component 16, as shown in FIG.

This service design step (S20) is similar to the server farm design hierarchy in the legacy data center concept.

In the L2 network (12, 13) configured in the virtual data center design step (S10), a server for WEB / WAS / DB of a logical network configuration communicating with a corresponding VLAN is configured, which is the same as the Cloud IaaS configuration.

As such, the user configures the server by selecting from the created L2 networks 12 and 13 with the right to configure the server.

Components that can be selected in service design are composed of standardized images (CentOS, Ubuntu, etc.) as templates.

Here, the WEB server processes static content such as HTML documents (documents that can be read through the HTTP protocol), and the WAS server reads and processes development languages such as asp, php, and jsp to process dynamic content and web application services. will be.

WAS server refers to a server that can perform various roles by implementing various functions in a container by combining a web server and a web container. When there is a request from a client, it is the web container that creates the result through the internal program and delivers it to the client again.

As such, a web server is a server that processes static data. A server that provides resources such as images or simple html files is faster and more stable than using WAS through a web server. The WAS server is a server that processes dynamic data. WAS should be used when data is exchanged in connection with a DB server or when data manipulation is required with a program.

On the other hand, in the existing legacy data center, physical network/security equipment was required even for a group network for interworking with only one server.

Virtualized group networks can be built in the vDC within the SDDC with the concept of region, contributing to integrated management and reducing the initial investment cost of the company.

To this end, in the group network design step (S30), the group network design unit 30 makes the public network, switched network, and private network configured through the above steps network interlocked by a TOR (physical L2 network) switch.

As such, configuring various physical networks through VLAN separation in the TOR (physical L2 network) switch 31 during SDDC physical infrastructure configuration is the starting point of group network construction.

As shown in FIG. 7, if the bands of various networks of the corresponding L2 switch are set, group networking is possible through a virtual router in the concept of a region in a vDC.

As such, the present invention can preoccupy the Technical Architecture by presenting an empirical business model for SDDC.

It is possible to take the lead in the upcoming SDx market by first presenting the convergence structure of scattered next-generation technologies (SDN, NFV, Cloud) and possessing related business models.

In particular, it is applied to the group network network (Private LTE, etc.) business considering the experience of operating large-scale data centers, technological maturity as the largest cloud operator in Korea, and long-term technology development direction, so that it can preoccupy the technology structure compared to operators with common goals.

In addition, the present invention enables productivity/speed improvement and cost reduction when building a group network through SDDC.

In addition, in the present invention, group network construction through SDDC is separated into virtual networks through virtual networks/security equipment in a standard POD structure, and all resources of the entire SDDC are controlled and managed by a resource pool.

Compared to the existing legacy data center's average utilization rate of only 15%, SDDC uses 100% of its resources through virtualization, enabling the configuration of minimal physical equipment. In addition, all infrastructure configuration and network control are automated through API to reduce leaf-time.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: Virtual data center design department
20: Service Design Department
30: Group Network Design Department
100: SDDC (Software-defined data center) integrated management system
110: switch network
120: private network
130: public network
140: management network
200: NFV Orchestrator
210-1 to 210-n: with virtualization network function
300: Cloud Orchestrator
310: virtualization server
320: virtualization storage
330: virtualization switch
400: virtualization infrastructure manager
500: virtualized network function infrastructure
600: Physical Network Infra
700: Virtual Network Infra

Claims (16)

a virtual data center design unit that allows a user granted virtual data center user rights to configure components of the virtual data center and a plurality of networks;
a service design unit configured to configure a server for WEB/WAS/DB purpose of a logical network configuration that communicates with a VLAN corresponding to a plurality of networks configured in the virtual data center design unit; and
To include a group network design unit that allows a plurality of networks configured by the virtual data center design unit to be network interlocked by a physical L2 network switch,
The group network design department
A group network construction device in a software defined center that separates the physical L2 network switch into each public network, private network, and switched network through VLAN separation and interworks with each of the plurality of networks. The method of claim 1,
The virtual data center design unit provides a component composed of icons and a canvas so that users granted virtual data center user rights can configure the components and networks of the virtual data center. . The method of claim 2,
The virtual data center design unit configures a basic private network (Private Network (L2)) as a network in the "area" of the components of the canvas by a user who has been granted user rights of the virtual data center, and when configuring an additionally separated network, a private network ( A group network building device in the Software Definition Center that allows you to configure additional private networks (L2) within an area by adding a private network icon. The method of claim 3,
The virtual data center design unit allows users who have been granted user rights of the virtual data center to add a “public network” component to the basic private network or additional private network that requires Internet linkage for customer service, and allows a defined pool ( A group network construction device in the Software Defined Center that grants a public IP address from a pool). The method of claim 4,
The virtual data center design unit includes a public network (public), a plurality of firewalls (FW: Firewall), a web firewall (WAF: Web Application Firewall), a load balancer (LB: Load Balancer), and Group network building devices in Software Defined Center with L2 switch. The method of claim 3,
The virtual data center design unit is a group network construction device in a software definition center that performs installation of an external network component between a basic private network and an additional private network and installation of an internal network component in an additional private network. The method of claim 6,
The service design unit configures a WEB server in external network components, and configures a WAS server and a DB server in internal network components. The method of claim 6,
The service design unit builds a group network in a software defined center using a component composed of a standardized image as a template. (A) enabling the virtual data center design unit to configure a plurality of networks with components of the virtual data center by a user to whom the virtual data center user authority is granted;
(B) allowing the service design unit to configure a server for WEB/WAS/DB purpose of a logical network configuration that communicates with a VLAN corresponding to a plurality of networks configured in the virtual data center design unit; and
(C) including the step of allowing the group network design unit to network a plurality of networks configured by the virtual data center design unit by a physical L2 network switch,
The step (C) is
A method of constructing a group network in a software defined center in which the physical L2 network switch distinguishes each public network, private network, and switched network through VLAN separation and interworks with each of the plurality of networks. The method of claim 9,
In the step (A), the virtual data center design unit provides a component composed of icons and a canvas, so that a user granted virtual data center user rights can configure the components and network of the virtual data center. How to build a group network in the center. The method of claim 10,
The step (A) is
(A-1) the virtual data center design unit configuring a basic private network (Private Network (L2)) as a network in the "area" of the components of the canvas by a user to whom user authority is granted; and
(A-2) When the virtual data center design unit configures an additionally separated network, adding a private network icon to configure an additional private network (L2) in the area is a group network in the software definition center. How to build. The method of claim 11,
The step (A) is
(A-3) The virtual data center design unit allows users who have been granted user rights of the virtual data center to add a "Public" component to the basic private network or additional private network that requires Internet linkage for customer service. A method of building a group network in the Software Defined Center, further comprising the step of granting a public IP from a defined pool. The method of claim 11,
The virtual data center design unit includes a public network (public), a plurality of firewalls (FW: Firewall), a web firewall (WAF: Web Application Firewall), a load balancer (LB: Load Balancer), and How to build a group network in Software Defined Center with a virtual L2 switch. The method of claim 11,
The step (A) is
(A-4) the virtual data center design unit further comprising installing an external network component between a basic private network and an additional private network and installing an internal network component in an additional private network. The method of claim 11,
In step (B), the service design unit configures a WEB server in an external network component, and configures a WAS server and a DB server in an internal network component. The method of claim 9,
In step (B), the service design unit uses a component composed of a standardized image as a template in a software defined center to build a group network.

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