CN108809732B - A software-defined metropolitan area network network control system - Google Patents
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
- H04L41/0253—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols using browsers or web-pages for accessing management information
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
- H04L41/5048—Automatic or semi-automatic definitions, e.g. definition templates
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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Abstract
本发明公开了一种软件定义城域网网络控制系统，包括：应用模块和控制模块和基础设施设备；应用模块与控制模块设置在web服务器上并相互进行数据传输，控制模块向基础设施设备下发设备配置指令；应用模块为基于Django框架的web服务模块，其具体包括模型模块、模板单元和视图模块；模型模块设定业务对象和数据库的关系映射；模板单元管理表现逻辑，通过内置的模板与HTML文件配合呈现Web内容；视图模块处理业务逻辑，包括从http请求到回应的过程。通过以应用程序和控制器配合检测基础设施设备的网络状态，能代替openflow协议实现流量行为细颗粒化管理的目的，从而节省网络升级改造经费，为节省企业网络转型提供技术方案支持。
The invention discloses a software-defined metropolitan area network network control system, comprising: an application module, a control module and infrastructure equipment; the application module and the control module are arranged on a web server and perform data transmission with each other, and the control module is connected to the infrastructure equipment Send device configuration instructions; the application module is a web service module based on the Django framework, which specifically includes a model module, a template unit and a view module; the model module sets the relationship mapping between business objects and databases; the template unit manages the presentation logic, through the built-in template Renders web content in conjunction with HTML files; the view module handles business logic, including the process from http request to response. By using the application program and the controller to cooperate to detect the network status of the infrastructure equipment, it can replace the openflow protocol to achieve the purpose of fine-grained management of traffic behavior, thereby saving the cost of network upgrade and transformation, and providing technical solution support for saving enterprise network transformation.
Description
Technical Field
The invention relates to the field of network control, in particular to a software defined metropolitan area network control system.
Background
SD-WAN is also a software defined wide area network (SDN), which is a specific application scenario of SDN technology in a Wide Area Network (WAN), and the wide area network connection is mainly used for connecting enterprise networks including branches and data centers. The SDN technology is applied to a wide area network scene to form a service, and the service is used for connecting enterprise networks, data centers, Internet applications and cloud services in a wide geographic range. The typical characteristic of such a service is to 'cloud' the network control capability in a software manner, and to support the opening of the network capability perceivable by the application. With SD-WAN, companies can build high performance wide area network with low cost network construction. Enterprises may thus partially or completely replace expensive private wide area network technologies, such as MPLS.
At present, most network controller platforms communicating on the network use an open switch (ovs) to support openflow protocol, so as to realize the idea of controlling the network through software, and this method has the disadvantage that enterprises need to replace a large number of network devices to realize sdn.
Disclosure of Invention
The invention provides a software defined metropolitan area network control system which is rapid to deploy and agilely developed for overcoming the defects of the prior art and saving the expenditure of equipment replacement for supporting openflow.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a software defined metropolitan area network control system comprising: an application module and control module and infrastructure equipment;
the application module and the control module are arranged on the web server and perform data transmission mutually, and the control module issues a device configuration instruction to the infrastructure equipment;
the application module is a web service module based on a Django framework and specifically comprises a model module, a template unit and a view module;
the model module sets the relation mapping between the business object and the database;
the template unit manages the presentation logic and presents Web content by matching a built-in template and an HTML file;
the view module processes business logic, including the process from http request to response;
the control module comprises an SDWAN controller;
the infrastructure equipment is network equipment applying the software defined metropolitan area network control system.
The principle of the network control system is that the existing host or similar equipment is used as a server, an application program module is arranged on the server, so that communication interaction is carried out between network equipment of other infrastructure and the application program, and the application program carries out corresponding network change and configuration deployment according to the network state sent by the network equipment of the infrastructure; in order to achieve the above purpose, the network control system is further provided with an SDWAN controller, and the SDWAN controller and the infrastructure issue an equipment configuration instruction through remote login (such as telnet, snmp, and the like) to complete corresponding network change, such as establishing an mpls vpn private line, allocating bandwidth resources as required, and the like.
Furthermore, the SDWAN controller is provided with a function facing the infrastructure equipment and modifying the network setting and parameters of the infrastructure equipment, and the function modifying the network setting and parameters of the infrastructure equipment is provided with an API (application program interface).
Furthermore, the template unit comprises an mpls construction template, a route-map configuration template and a plurality of webpage templates.
Further, the model module comprises a user management unit and a work order management unit;
the application module is also provided with a database, and the user management unit and the work order management unit are provided with corresponding user and work order data structures and storage information in a setting library.
Further, the view module specifically includes a plurality of view functions, where the view functions include at least 1 view function calling model module, and are used to process an HTTP request initiated by a user, render a corresponding template file through a template unit, and return the template file to the user;
the view function is also connected with the SDWAN controller, and the SDWAN controller function is accessed through an API (application program interface) of the SDWAN controller function.
Further, the infrastructure equipment includes PCs, routers and switches.
Furthermore, the application module realizes user management, metropolitan area network private line service and private line cloud service through the cooperation of the model module, the template unit and the view module.
Further, the SDWAN controller configures and deploys the infrastructure equipment in an mpls pn and lineloud automated deployment mode, wherein the automated deployment mode conforms to the protocols of bgp, mpls and ospf.
Furthermore, the application module is also provided with a URL distribution unit for analyzing the page request of the URL and distributing the page request to a corresponding function in the view module for processing.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention designs a framework comprising an application program module and a controller to control the flow behavior of the traditional network, thereby achieving the purpose of replacing openflow protocol to realize the fine-grained management of the flow behavior, saving the network upgrading and modifying cost and providing technical scheme support for saving enterprise network transformation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a software defined metropolitan area network control system.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
A software defined metropolitan area network control system, as shown in fig. 1, comprising: an application module and control module and infrastructure equipment;
the application module and the control module are arranged on the web server and mutually transmit data, a work order system is established to provide network services for users, the system reads the network resource information related to the system resource pool and presents the information at the front end, and a client can submit a work order according to actual needs; the control module issues a device configuration instruction to the infrastructure equipment, reads work order information to perform network change by self, achieves the effect of network resource allocation as required, and charges according to the user flow use condition to achieve the demand of paying according to the flow;
the application module is a web service module based on a Django framework and specifically comprises a model module, a template unit and a view module;
the model module sets Object-Relational Mapping (ORM) of a business Object and a database, each model corresponds to one or more unique tables in the database, is used for constructing and operating data in application and comprises necessary fields and behaviors of corresponding stored data;
the template unit manages and expresses logic, and the Web content is presented by matching a built-in template and an HTML file, wherein the template comprises a static part output by the HTML and a special grammar which can be used for inserting dynamic content and can be non-HTML;
the view module processes service logic, including a process from http request to response, wherein logic for processing user request and returning response is encapsulated in a function; in the process of processing logic, the model module and the template unit are called correspondingly according to requirements, data reading is carried out, pages are returned to infrastructure equipment, and the like;
the control module comprises an SDWAN controller, the SDWAN controller performs flow control, flow path dynamic planning, network link quality regulation and control and network link attribute control on the whole network of the network control system, and establishes a special line through an mpls and/or routing strategy;
the infrastructure equipment defines network equipment of the metropolitan area network control system for the application software.
In this embodiment, the SDWAN controller is provided with a function facing the infrastructure device and modifying network settings and parameters of the infrastructure device, and the function modifying network settings and parameters of the infrastructure device is provided with an API interface. Specifically, including mpls and lineloud automated deployment;
the mpls pn carries out flow isolation in a configuration vrf mode, and further completes the construction of a special line; when the user deploys the mpls vpn, the user needs to submit related vrf (virtual Routing Forwarding instance) tags, rd (route distingguisher) and rt (route target) information on the work order system;
the routing strategy establishes a special line, namely the direction of a data packet is controlled by configuring a strategy routing form, and route-map is configured under an interface to complete flow forwarding; the routing strategy has the problem that the flow between different user groups can not be communicated, in the application scene of mpls pn, vrf can form a natural isolation area, and vrf is cancelled, so that the isolation is realized through the combination of acl and route-map; specifically, the QoS behavior is configured in the system, the configuration path is obtained first, that is, the calculated optimal path is obtained, and then the configuration is issued to the network device.
In this embodiment, the template unit includes an mpls pn construction template, a route-map configuration template, and a plurality of Web page templates, and the template implements dynamic presentation of a Web page generated by the template by means of template tags, filters, flow control statements, template inheritance, and the like, in cooperation with css and js scripts.
In this embodiment, the model module includes a user management unit and a work order management unit, and the management units are each composed of a plurality of custom fields, and can be used for operations such as creation, reading, modification, deletion and the like; specifically, the operation is carried out through functions of Django ORM such as get, filter, save, delete and the like; the method is also applied to cache optimization, and the data inquired from the database is stored in a memory in a class object form for being extracted at any time; instead of querying the database when the ORM query command executes, the select operation of the database is actually performed when the query result is needed.
The application module is also provided with a database, and the user management unit and the work order management unit are provided with corresponding user and work order data structures and storage information in a setting library; specifically, the database is a MySQL database.
In this embodiment, the view module specifically includes a plurality of view functions, where the view functions include at least 1 view function calling model module, and are used to process an HTTP request initiated by a user, render a corresponding template file through a template unit, and return the template file to the user;
the view function is also connected with the SDWAN controller, the SDWAN controller function is accessed through an API (application program interface) of the SDWAN controller function, and the SDWAN controller can take the existing function as the API interface and can also adopt a new function for calling the existing function as the API interface; specifically, the system is matched with an SDWAN controller, a user submits a special line work order requirement after logging successfully, if the user needs a vpn service, an mpls service is selected, and if the user needs a special line cloud service, the linecloud is clicked; the application module serves as a background and provides corresponding services for the user according to related work order requirements.
In this embodiment, the infrastructure equipment includes PCs, routers, and switches.
In this embodiment, the application module implements user management, metropolitan area network private line service, and private line cloud service by the cooperation of the model module, the template unit, and the view module;
specifically, the user management comprises the steps of setting a model of a user in a model module, wherein the model is provided with a role type and is used for distinguishing 3 authorities of a super manager, an administrator and the user, setting a login page and a function for processing login logic in a template unit and a view module, wherein the functions comprise the input of an account number and a password, performing database query, and jumping to a corresponding user interface if login is successful; if the login is unsuccessful, prompting that the account number and the password are wrong, keeping the interface unchanged, and waiting for the user to input again;
in the special service of the metropolitan area network, self-service configuration is carried out according to rd (XX: NN) and rt (XX: NN) which are already applied by a user, and whether the service is carried out is judged according to whether rd and rt labels are already applied under the role of the user. If no rd and rt exist under the user name, an application needs to be made to an administrator; the administrator can apply to the system to allocate rd and rt for the user, can manually configure rd and rt of the user, and starts the private line change work for the user; the super administrator has the right to delete rd and rt; in addition, the rd and the rt can be applied to the system to be allocated to the user, or the rd and the rt of the user can be manually configured, and the special line change work is started for the user;
a user perceives network bandwidth to purchase corresponding private line cloud services from a system according to requirements, and the system configures a routing strategy according to an ip address of the user; if the database does not have related ip records, the user needs to manually input the data, and then the change process is initiated through the audit of an administrator; an administrator can manually add an ip address to a certain user and configure a corresponding routing strategy for the user; the super administrator can add and delete the ip address of a certain user and can configure a corresponding routing strategy for the certain user.
In this embodiment, because the existing metropolitan area network/wide area network adopts the protocols of bgp, ospf and mpls, the SDWAN controller performs corresponding configuration and deployment on the infrastructure equipment through mpls and linecloud automated deployment modes, and issues a corresponding configuration policy by reading a work order requirement and combining configured template information; by automatic deployment, enterprise information among different regions can be interconnected and intercommunicated, and a network logic layer is established; in order to guarantee the network connection quality, the network logic layer imitates the network of the existing operator, and nesting is carried out through bgp, ospf and mpls.
In this embodiment, the application module is further provided with a URL distribution unit, configured to analyze a page request of a URL and distribute the page request to a corresponding function in the view module for processing, and the view module recalls data of a corresponding template unit and a corresponding model module to form a response, which is returned to the user side, and the process is as follows:
s1, a Web server (middleware) receives an http or https request;
s2, Django searches a corresponding View (View) function in URLconf to process the http or https request;
s3, calling a corresponding data model by the view function to access data and calling a corresponding template to display a page for a user;
s4, calling a corresponding data model by the view function to access data and calling a corresponding template to display a page for a user;
and S5, the Web server sends the response to the client.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A software defined metropolitan area network control system, comprising: an application module and control module and infrastructure equipment;
the application module and the control module are arranged on the web server and perform data transmission mutually, and the control module issues a device configuration instruction to the infrastructure equipment;
the application module is a web service module based on a Django framework and specifically comprises a model module, a template unit, a view module and a database;
the model module sets the relation mapping between the business object and the database;
the model module comprises a user management unit and a work order management unit, wherein the user management unit and the work order management unit are provided with corresponding user and work order data structures and storage information in a database;
the template unit manages the presentation logic and presents Web content by matching a built-in template and an HTML file;
the template unit comprises an mpls construction template, a route-map configuration template and a plurality of webpage templates;
the view module processes business logic, including the process from http request to response;
the control module comprises an SDWAN controller, the SDWAN controller configures and deploys the infrastructure equipment in an mpls and linecool automatic deployment mode, and the automatic deployment mode conforms to protocols of bgp, mpls and ospf;
the infrastructure equipment is network equipment applying the software defined metropolitan area network control system.
2. The system according to claim 1, wherein the SDWAN controller is configured with a function that is infrastructure device oriented and modifies infrastructure device network settings and parameters, the function modifying infrastructure device network settings and parameters is configured with an API interface.
3. The software-defined metropolitan area network control system according to claim 2, wherein the view module specifically comprises a plurality of view functions, and the view functions comprise at least 1 view function calling model module, and are used for processing an HTTP request initiated by a user, rendering a corresponding template file through a template unit, and returning the template file to the user;
the view function is also connected with the SDWAN controller, and the SDWAN controller function is accessed through an API (application program interface) of the SDWAN controller function.
4. The software defined metropolitan area network control system of claim 1, wherein said infrastructure devices comprise PCs, routers, and switches.
5. The software defined metropolitan area network control system according to any one of claims 1-4, wherein said application module implements user management, metropolitan area network private line service and private line cloud service through model module, template unit and view module cooperation.
6. The software defined metropolitan area network control system of claim 5, wherein said application module further comprises a URL distribution unit for analyzing URL page requests and distributing the URL page requests to corresponding functions in the view module for processing.
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| CN109918109B (en) * | 2019-03-12 | 2022-07-19 | 赛特斯信息科技股份有限公司 | System and method for realizing software version smooth upgrading function aiming at SD-WAN system |
| CN111343070B (en) * | 2020-03-03 | 2021-07-09 | 深圳市吉祥腾达科技有限公司 | Communication control method for sdwan network |
| CN112565008B (en) * | 2020-11-26 | 2022-11-22 | 深信服科技股份有限公司 | Network monitoring method, device and related equipment |
| CN112486999A (en) * | 2020-12-15 | 2021-03-12 | 广州品唯软件有限公司 | Data statistical method and device based on Django framework, computer equipment and medium |
| CN112463802A (en) * | 2020-12-15 | 2021-03-09 | 广州品唯软件有限公司 | Django framework-based data storage method and device, computer equipment and medium |
| CN112463811A (en) * | 2020-12-15 | 2021-03-09 | 广州品唯软件有限公司 | Django framework-based data modification method and device, computer equipment and medium |
| CN113141416B (en) * | 2021-05-12 | 2022-05-20 | 广州诚为信息技术有限公司 | SDWAN's enterprise operation management system |
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