CN113315654A - Network automatic configuration system - Google Patents
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- CN113315654A CN113315654A CN202110544139.2A CN202110544139A CN113315654A CN 113315654 A CN113315654 A CN 113315654A CN 202110544139 A CN202110544139 A CN 202110544139A CN 113315654 A CN113315654 A CN 113315654A
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Abstract
The invention provides a network automatic configuration system, which is based on an SDN structure and comprises the following components: the system comprises an application layer, a control layer and a data layer, wherein the application layer comprises a database programming interface, the control layer is connected with the application layer through the database programming interface, and the control layer is in communication connection with the data layer based on a southbound interface communication protocol. By realizing and deploying the system, the automatic configuration from the network management service form to the network equipment is realized, and the operation time for processing the network management service form by network management personnel is greatly saved. Moreover, the method can realize batch automatic processing of the network management business forms, greatly simplify the configuration management and operation maintenance of the network management business forms, and provide a new solution for the processing mode of network management business process. The network configuration management work based on the network management service form can be made easier.
Description
Technical Field
The invention relates to the technical field of computer application and software, in particular to an automatic network configuration system.
Background
In recent years, in order to promote the internet and government affair service, realize centralized handling, unified feedback and full-process supervision of the government affair service, realize item list standardization, handling guide standardization and business handling coordination, realize one-sheet management and one-stop service, and a business platform based on a process engine is favored by more and more users.
With the overall development of the process platform, the scale of the network management business form based on the process platform is continuously enlarged, so that the number of the network management business form is increased in a geometric explosive manner. On the one hand, the repetitive operation and the huge number of network management service forms consume a lot of time for the network manager. On the other hand, with the rapid development of network technologies and the falling of new technologies such as internet of things, artificial intelligence, cloud computing and the like, network architectures with various brands, which require a large amount of manual configuration and cannot be centrally controlled, also make the network configuration management work based on the network management service form more difficult.
Therefore, it is urgently needed to provide a network automatic configuration system.
Disclosure of Invention
The invention provides a network automatic configuration system, which is used for solving the defects in the prior art and realizing the effect of automatically processing network management service forms in batches.
The invention provides a network automatic configuration system, comprising: the system comprises an application layer, a control layer and a data layer, wherein the application layer comprises a database programming interface, the control layer is connected with the application layer through the database programming interface, and the control layer is in communication connection with the data layer based on a southbound interface communication protocol;
the application layer comprises a process engine and is used for acquiring configuration information in a network management service form based on the process engine;
the control layer is used for acquiring the configuration information and sending the configuration information to the network equipment of the data layer based on the southbound interface communication protocol;
the data layer is used for receiving the configuration information and configuring the network equipment based on the configuration information.
According to the network automatic configuration system provided by the invention, the control layer comprises a controller and a network configuration client;
the controller is used for converting the configuration information into message format information of the southbound interface communication protocol and then sending the message format information to the configuration network client;
the configuration network client is used for sending a remote procedure call request to the network equipment and sending the message format information to the network equipment.
According to the network automatic configuration system provided by the invention, the application layer comprises a database, the database is used for storing the configuration information and the configuration state of the configuration information;
the controller is further configured to update the configuration state based on the configuration result information after receiving the configuration result information returned by the network device.
According to the automatic network configuration system provided by the invention, the field values corresponding to the configuration states stored in the database comprise 7, and different field values correspond to different configuration states.
According to the network automatic configuration system provided by the invention, the southbound interface communication protocol comprises a network configuration protocol.
According to the network automatic configuration system provided by the invention, the network configuration protocol comprises a message layer and an operation layer;
the message layer is used for analyzing the remote procedure call request;
the operation layer is used for defining the operation of the application in the remote procedure call corresponding to the remote procedure call request.
According to the network automatic configuration system provided by the invention, the operation is carried on the message format information, and the message format information is organized in an XML format.
According to the network automatic configuration system provided by the invention, the application layer comprises a database, and the database is used for storing the network management service form;
the controller comprises a connection database module, and is specifically used for accessing the database based on the connection database module and acquiring the configuration information.
According to the network automatic configuration system provided by the invention, the connection database module comprises a database connection function, a cursor object creation function, an execution function, a submission function and a closing function;
the controller is specifically configured to establish a connection with the database based on the database connection function, create a cursor object based on the cursor object, access the database based on the execution function, commit a database transaction based on the commit function, and close the cursor object and the connection established with the database based on the close function.
According to the network automatic configuration system provided by the invention, the configuration information comprises an IP address.
The invention provides a network automatic configuration system, which is based on an SDN structure and comprises the following components: the system comprises an application layer, a control layer and a data layer, wherein the application layer comprises a database programming interface, the control layer is connected with the application layer through the database programming interface, and the control layer is in communication connection with the data layer based on a southbound interface communication protocol. By realizing and deploying the system, the automatic configuration from the network management service form to the network equipment is realized, and the operation time for processing the network management service form by network management personnel is greatly saved. Moreover, the method can realize batch automatic processing of the network management business forms, greatly simplify the configuration management and operation maintenance of the network management business forms, and provide a new solution for the processing mode of network management business process. The network configuration management work based on the network management service form can be made easier.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a network automatic configuration system provided by the present invention;
FIG. 2 is a flow chart of a network management service form provided by the present invention;
fig. 3 is a schematic diagram of a NETCONF protocol layered structure provided by the present invention;
FIG. 4 is a schematic diagram of a DB API access database flow provided by the present invention;
fig. 5 is a schematic diagram of a detailed operation flow of the control layer NETCONF client provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As Software Defined Networking (SDN) is receiving more and more attention from Network managers, SDN breaks the seal of traditional Network devices, making Network management simpler, more dynamic and more flexible. Therefore, in order to solve the difficult problem of network management work, the embodiment of the present invention provides an automatic network configuration system combining a process engine and an SDN.
Fig. 1 is a schematic structural diagram of a network automatic configuration system provided in an embodiment of the present invention, and as shown in fig. 1, the system includes: the system comprises an application layer 1, a control layer 2 and a data layer 3, wherein the application layer 1 comprises a DataBase programming interface (DB API), the control layer 2 is connected with the application layer 1 through the DB API, and the control layer 2 is in communication connection with the data layer 3 based on a southbound interface communication protocol;
the application layer 1 comprises a process engine, and the application layer 1 is used for acquiring configuration information in a network management service form based on the process engine;
the control layer 2 is configured to obtain the configuration information, and send the configuration information to the network device of the data layer 3 based on the southbound interface communication protocol;
the data layer 3 is configured to receive the configuration information and configure the network device based on the configuration information.
Specifically, in the embodiment of the present invention, an SDN layering idea is utilized to separate data from control, and the overall architecture of the network automatic configuration system is divided into an application layer 1, a control layer 2, and a data layer 3 from bottom to top (from south to north) by the SDN. The application layer 1 comprises various SDN-based network applications, and users can program and deploy in the application layer without paying attention to bottom level details; the control layer comprises an SDN controller which is logically a control center; the data layer 2 is composed of network devices such as switches. In the SDN, an SDN controller of a control center centrally controls network devices of a data layer 2, and the network devices may include switches, routers, and the like, and only implement a simple packet forwarding function. In the SDN, an application layer 1 and a control layer 2 are in connection communication through a northbound interface, wherein the northbound interface refers to a DB API provided by the application layer 1 for the control layer 2; the control layer 2 communicates with the data layer 3 through a southbound interface protocol to manage and configure various network devices. The southbound interface protocol may include an Open Flow protocol, a NETCONF protocol, and the like. In the embodiment of the present invention, a network configuration (NETCONF) protocol may be adopted as a southbound interface communication protocol of the control layer 2 and the data layer 3.
The application layer 1 may include a process engine, through which the configuration information in the network management service form is obtained. The user applies for a network management service form through the process engine, inputs user data such as applicant information, IP address and the like, the process engine stores the user data into the database and sends the user data to the control layer, and the process engine continues to execute the process after modifying the database data according to information returned by the control layer until the whole process event is finished.
The Process engine can adopt a Process engine based on Business Process Modeling Notation 2.0 (BPMN 2.0) specification, and the Business Process Modeling Notation 2.0 is an industrial standard of Business Process Modeling Business Process in the Business Process management field. The process engine based network management service form may collate network configuration management events into network configuration process events: the business application personnel fills in the application- > the business application unit safety approval- > the network management unit execution- > filing and filing, and a flow model diagram of a network management business form constructed by the corresponding components of the process through the BPMN2.0 is shown in FIG. 2. In the embodiment of the invention, on the basis of establishing the flow model by the BPMN2.0 flow engine, the configuration program of the network equipment is automatically executed when the network configuration flow event is executed to a certain flow node, and after the execution of the configuration program is finished, the flow node is automatically returned to continuously execute the flow event until the network configuration flow event is finished.
The network management service form is stored in the database of the application layer in the form of a data table structure shown in table 1, and simultaneously, information such as an IP address, a port, a status code, an applicant name, a unit where the applicant is located, a mobile phone and the like is transmitted between the network management service form and the controller of the control layer through a DB API (database application programming interface).
TABLE 1 network management form database basic data sample
According to different network management services, the information of 'study number, application date, name, unit, initiating department id, mobile phone, department opinion, operation and maintenance department opinion, STATE and BID' shown in the table 1 adopts the general data information of the process engine, IP address and other configuration information for the user to fill in, and after the control layer reads and processes the information, the control layer returns the 'STATE code' < STATE > field in the modification form.
The control layer 2 includes two parts, namely a controller and a NETCONF Client (Client), and has the main functions of receiving configuration information issued by a process engine, converting the configuration information, sending the converted configuration information to network equipment of a data layer through a NETCONF protocol to execute configuration, and modifying database data of an application layer according to configuration result information returned by the network equipment of the data layer.
The data layer 3 mainly refers to a plane where the managed network devices are located, and all the devices of the layer enable a NETCONF Server (Server) which is communicated with a control layer NETCONF Client, and are used for receiving and processing network configuration information sent by the NETCONF Client and storing the configuration information of the devices so that the NETCONF Client can inquire and modify the configuration information and the like.
The network automatic configuration system provided in the embodiment of the present invention, based on an SDN structure, includes: the system comprises an application layer, a control layer and a data layer, wherein the application layer comprises a database programming interface, the control layer is connected with the application layer through the database programming interface, and the control layer is in communication connection with the data layer based on a southbound interface communication protocol. By realizing and deploying the system, the automatic configuration from the network management service form to the network equipment is realized, and the operation time for processing the network management service form by network management personnel is greatly saved. Moreover, the method can realize batch automatic processing of the network management business forms, greatly simplify the configuration management and operation maintenance of the network management business forms, and provide a new solution for the processing mode of network management business process. The network configuration management work based on the network management service form can be made easier.
On the basis of the above embodiment, in the network automatic configuration system provided in the embodiment of the present invention, the control layer includes a controller and a network configuration client;
the controller is used for converting the configuration information into message format information of the southbound interface communication protocol and then sending the message format information to the configuration network client;
the configuration network client is used for sending a remote procedure call request to the network equipment and sending the message format information to the network equipment.
Specifically, in the embodiment of the present invention, the control layer is a core function module of the network automatic configuration system, and is mainly divided into two function modules, namely a controller and a NETCONF client.
The controller receives and modifies the configuration information of the application layer through a DB API (application program interface) issued by the application layer, converts the configuration information into a message format of a NETCONF protocol, then delivers the message format to the NETCONF client for execution, and modifies the database data of the application layer through the DB API after reading the information returned by the NETCONF server.
The control layer establishes and maintains connection with network equipment with a data layer provided with a NETCONF server through a NETCONF client, after the connection is established, the NETCONF client sends an RPC request to the NETCONF server so as to issue configuration information, and the connection is closed after a response message of the server end is received.
On the basis of the above embodiment, in the network automatic configuration system provided in the embodiment of the present invention, a data layer is a plane where network devices managed by the system are located, and all network devices in the layer enable NETCONF servers. After establishing the connection between the NETCONF server and the control layer NETCONF client, starting to receive and identify the request message type sent by the client, returning a response message of success or failure of RPC request execution after completing the device configuration modification according to different message types, and simultaneously storing and maintaining the configuration information data of the network device for the client to perform subsequent query modification and other operations.
On the basis of the above embodiment, in the network automatic configuration system provided in the embodiment of the present invention, the application layer includes a database, and the database is used for storing the configuration information and the configuration state of the configuration information;
the controller is further configured to update the configuration state based on the configuration result information after receiving the configuration result information returned by the network device.
Specifically, in the embodiment of the present invention, the database included in the application layer may adopt an Oracle database, the database version supports a client server mode of the Oracle standard, and is implemented based on a Python programming language, and the DB API interface calls a cx _ Oracle module of the Oracle database conforming to the Python DB API 2.0 specification.
The configuration states stored in the database correspond to field values including 7, and different field values correspond to different configuration states. The flow engine only synchronizes to the < STATE > field of 1 or 3, ending the flow. The < STATE > field is an important field for communication between the control layer and the data layer, and 7 integer fields are designed, wherein information corresponding to each field is shown in table 2 below.
TABLE 2< STATE > field information
| Field value | Field information |
| -4 | Throwing exception after being processed by controller |
| -3 | Controller attempts to handle deletion failures |
| -1 | Controller attempts to handle increase failure |
| 0 | Unprocessed user filled-in add applications |
| 1 | Information of execution increase success returned by processed controller |
| 2 | Unprocessed user-filled-in deletion applications |
| 3 | Information returned by processed controller and used for successfully executing deletion |
On the basis of the above embodiment, in the network automatic configuration system provided in the embodiment of the present invention, the controller includes a connection database module, and the controller is specifically configured to access the database based on the connection database module to obtain the configuration information.
The connection database module comprises a database connection function, a cursor object creation function, an execution function, a submission function and a closing function;
the controller is specifically configured to establish a connection with the database based on the database connection function, create a cursor object based on the cursor object, access the database based on the execution function, commit a database transaction based on the commit function, and close the cursor object and the connection established with the database based on the close function.
Specifically, according to the function requirement, the controller may connect the database module through the DB API to implement functions of connecting the database, creating a cursor object using the current connection, executing a command, submitting a transaction, closing a cursor object, closing a connection, and the like, and each function completes a flow of accessing the database using the DB API, and the implementation flow is as shown in fig. 4.
Accessing the database flow using the DB API may be summarized as several steps:
step 1: a database connection function cx _ oracle.connect () is called to establish a database connection, which needs to provide parameters such as a database user name, a password, a host name, a database name, and the like.
Step 2: after the step 1 join, a cursor object is created and returned by the cursor object creation function connection.
And step 3: execute () using the cursor object obtained in step 2 to execute SQL statement commands such as query for the database, UPDATE, etc.
And 4, step 4: and after the execution operation is finished, calling a commit function connection.commit () to commit the database transaction, and ensuring that the database command is successfully executed.
And 5: close function () is called to close the cursor object and close function connection.
On the basis of the foregoing embodiment, in the network automatic configuration system provided in the embodiment of the present invention, a detailed operation flow of the control layer NETCONF client is shown in fig. 5, and may be summarized as three stages of session establishment, interactive message transmission, and session closing. The script development of a NETCONF client module of a control layer is realized by adopting a Python-based ncclient library.
Step 1: calling a connect function of the ncclient library, initiating a connection request to the server terminal by the NETCONF client, and establishing SSH-based secure connection between the NETCONF client and the server terminal by using the host, the port number, the user name and the password information through the secure authentication of the server terminal.
Step 2: NETCONF client and server send message of < hello > to each other to exchange capability, and establish conversation after confirming functions supported by both parties.
And step 3: after the session is established, NETCONF client initiates an RPC request, and sends a < RPC > message to the server, wherein the message is organized in an XML format, and the operation defined by the NETCONF protocol operation layer is carried on the < RPC > message. The design of the method realizes the configuration operations of query, addition and deletion, and calls ncclient library manager, get, configuration and manager, edge and configuration functions respectively corresponding to the < get > < edge-configuration > operation specified by the NETCONF protocol.
And 4, step 4: after the NETCONF server end processes the client end < rpc > request message, returning a < rpc-reply > response message, and after the control layer NETCONF client receives the < rpc-reply > response message, designing and realizing the following three types of processing flows of returned information according to the element types contained in the response message:
the < rpc-reply > response message contains an < ok/> element, namely the server side configuration request message is successfully executed, the NETCONF client side returns a code 1 to the controller, and the controller updates and sets the < STATE > field of the application layer to be 3 after receiving the return code 1.
And the < rpc-reply > response message does not contain an < ok/> element, namely the server side configuration request message fails to be executed, the NETCONF client side returns a code-1 to the controller, and the controller updates and sets the < STATE > field of the application layer to be-3 after receiving the return code-1.
And after receiving the return code-2, the controller updates and sets the < STATE > field of the application layer operation and maintenance form database to be-4.
And 5: and after the RPC request operation is completed, terminating the NETCONF session and closing the transport layer session.
On the basis of the above embodiment, the present flow engine and network equipment are built and integrated for performing functional test according to the overall architecture design structure of the network automatic configuration system in the embodiment of the present invention, and the overall application test system is mainly composed of the following three parts.
Firstly, a < public network address open port application > flow form is newly built on the existing flow platform and is used as the application layer of the system. In the flow form, except the learning work number, application date, name, unit, and basic information field of the mobile phone, the fields of IP address, port, server usage, and open port usage are designed and recorded as configuration information in table 1, and the user enters the flow form circulation flow after submitting the flow form. When the form flows to the network management personnel operation node, the network management personnel execute different processing operations in batches according to the application content, and then the flow form sends the IP address, the port and the configuration operation information to the control layer controller through the DB API. And after the controller modifies the fields of the flow form database through the DB API, the flow form continues to execute the form flow process according to the field information until the process is finished.
Secondly, a controller and Python development codes of a NETCONF client are deployed on one device, and a control layer of the system is constructed. The functional module of the layer adopts an operating system of a CentOS 7 version, and necessary object libraries such as ncclient and cx _ Oracle of Python are installed in the system environment.
Finally, the existing egress firewall device is used as the network device managed by the data layer. The firewall is USG9560, starts a NETCONF server function, and is used for receiving configuration operation requests for increasing and opening public network ports in batches and deleting the public network ports, which are sent by a NETCONF client. Based on the system, the export firewall can process hundreds of configuration operation requests at the second level, and the efficiency of processing the flow form by network management personnel is far higher than that of a conventional processing mode.
In summary, in the embodiments of the present invention, on the basis of deep research on the process engine and the NETCONF protocol, a set of network automatic configuration systems based on the process engine and the SDN is designed and implemented according to the development trend and configuration requirements of the network management service. The system provides a set of convenient and efficient network equipment configuration and management system for network management personnel processing the flow form, and solves the problem of heavy and complex network management requirements caused by continuous development of an information system and a network architecture. At present, the system integrates a few types of flow forms and network equipment, and a flow form model and an equipment type are further expanded subsequently.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A network autoconfiguration system, comprising: the system comprises an application layer, a control layer and a data layer, wherein the application layer comprises a database programming interface, the control layer is connected with the application layer through the database programming interface, and the control layer is in communication connection with the data layer based on a southbound interface communication protocol;
the application layer comprises a process engine and is used for acquiring configuration information in a network management service form based on the process engine;
the control layer is used for acquiring the configuration information and sending the configuration information to the network equipment of the data layer based on the southbound interface communication protocol;
the data layer is used for receiving the configuration information and configuring the network equipment based on the configuration information.
2. The network autoconfiguration system of claim 1, wherein the control layer comprises a controller and a network configuration client;
the controller is used for converting the configuration information into message format information of the southbound interface communication protocol and then sending the message format information to the configuration network client;
the configuration network client is used for sending a remote procedure call request to the network equipment and sending the message format information to the network equipment.
3. The network autoconfiguration system of claim 2, wherein the application layer comprises a database for storing the configuration information and the configuration status of the configuration information;
the controller is further configured to update the configuration state based on the configuration result information after receiving the configuration result information returned by the network device.
4. The network autoconfiguration system of claim 3, wherein the configuration states stored in the database have corresponding field values comprising 7, and wherein different field values correspond to different configuration states.
5. The network auto-configuration system of claim 2, wherein the southbound interface communication protocol comprises a network configuration protocol.
6. The network auto-configuration system of claim 5, wherein the network configuration protocol comprises a message layer and an operation layer;
the message layer is used for analyzing the remote procedure call request;
the operation layer is used for defining the operation of the application in the remote procedure call corresponding to the remote procedure call request.
7. The network autoconfiguration system of claim 6, wherein the operations are carried on the message format information, and wherein the message format information is organized in XML format.
8. The network autoconfiguration system of claim 2, wherein the application layer comprises a database for storing the network management service form;
the controller comprises a connection database module, and is specifically used for accessing the database based on the connection database module and acquiring the configuration information.
9. The network autonomic configuration system of claim 8 wherein the connection database module comprises a database connection function, a cursor object creation function, an execution function, a commit function, and a close function;
the controller is specifically configured to establish a connection with the database based on the database connection function, create a cursor object based on the cursor object, access the database based on the execution function, commit a database transaction based on the commit function, and close the cursor object and the connection established with the database based on the close function.
10. The network auto-configuration system according to any of claims 1-9, wherein the configuration information comprises an IP address.
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| CN102427409A (en) * | 2012-01-31 | 2012-04-25 | 迈普通信技术股份有限公司 | Configuration data submitting method based on network configuration protocol and server |
| CN106936857A (en) * | 2015-12-29 | 2017-07-07 | 中国电信股份有限公司 | A kind of connection management method of mixed cloud, SDN controllers and mixing cloud system |
| US20190245732A1 (en) * | 2016-09-19 | 2019-08-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for network management based on netconf protocol, and associated network device |
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- 2021-05-19 CN CN202110544139.2A patent/CN113315654A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102148817A (en) * | 2010-12-08 | 2011-08-10 | 华为技术有限公司 | Network equipment configuration method, client, server and network system |
| CN102427409A (en) * | 2012-01-31 | 2012-04-25 | 迈普通信技术股份有限公司 | Configuration data submitting method based on network configuration protocol and server |
| CN106936857A (en) * | 2015-12-29 | 2017-07-07 | 中国电信股份有限公司 | A kind of connection management method of mixed cloud, SDN controllers and mixing cloud system |
| US20190245732A1 (en) * | 2016-09-19 | 2019-08-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for network management based on netconf protocol, and associated network device |
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Application publication date: 20210827 |