KR20190051627A - Operation layer improving apparatus and method of network configuration protocol in network management system - Google Patents

Abstract

According to the present invention, an operation method of an operation layer improving apparatus of a network configuration (NETCONF) protocol in a network management system comprise the steps of: receiving a lock operator execution instruction provided in an operating layer of the NETCONF protocol; performing a lock operation only on a target node when performing a lock operation by a precise locking method in response to the received instruction; and when a delete-config operator is performed on the target node, adding a marking field for logical deletion to the target node.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for improving an operation layer of a network configuration protocol (NETCONF protocol) in a network management system,

The present disclosure relates to an apparatus and method for improving an operation layer of a network configuration protocol (NETCONF protocol) in a network management system. More specifically, it is determined whether to perform a lock operation by analyzing whether the target node is a target node, And an apparatus and method for improving the operating layer of the NETCONF protocol for determining whether or not a marking field is added by analyzing whether a delete-config operator is performed on a target node.

Data traffic is growing exponentially every year due to the dramatic increase in smart phone technology, wearable devices that provide functions such as IoT, all kinds of sensors, and speech recognition. In order to accommodate such a situation, a large-scale network composed of various equipment (heterogeneous equipment, virtual machine, network management program) is being formed. These large networks are controlled by SNMP, CLI or TL1, which is a traditional network management protocol. However, the configuration information modeling technique limited to specific equipment has a disadvantage of generating a lot of management traffic. In order to manage network devices, there are various stages such as configuration operator and transmission function to transmit configuration information to corresponding devices. It is not easy to manage various kinds of network equipment including designing these various steps in one step It is an assignment. Therefore, IETF (Internet engineering task force) studying Internet standard for smooth use of the Internet is a network configuration (NETCONF) model of text based (XML, JSON, etc.) Standardized. NETCONF is a session-based network management standard such as SDN, NMS and EMS. By defining data to send / receive device configuration information as four independent layers, NETCONF can be operated between various heterogeneous systems. To exchange structured XML information data.

NETCONF can reduce OPEX / CAPEX significantly by ensuring interoperability between heterogeneous network devices by sending and receiving formatted text-based data. The NETCONF model manages network equipment using XML based remote procedure call (RPC) and configuration data. Specifically, the configuration management service requested through a formalized XML data message is implemented using RPC. An RPC is a standard used by a network management server to request a service by calling a subroutine located in a remote network device. A program requesting the service does not need to know the detailed state of the network, The client / server model is used, the program requesting the service becomes the client, and the program providing the service becomes the server. In the RPC operation, the service name is transmitted in an XML tag in the transmission message, and the server receiving the transmission information extracts the service name and required parameter values, executes the requested command, inserts the result into the transmission message, and responds do.

1 is a diagram illustrating layers of a NETCONF protocol model according to an exemplary embodiment. Referring to FIG. 1, the NETCONF standard includes a content layer for describing management configuration and operation information in an XML form, (RPC layer) that can execute functions or procedures in another address space without coding for remote control, and a transport layer that transmits heterogeneous packet data. Define the hierarchy.

Looking at the behavior in NETCONF, all NETCONF operations are performed within a session associated with a secure transport layer connection. Although there is no standard security model for NETCONF, it is assumed that the session represents a specific user with a set of access privileges do. The NETCONF server must authenticate the entity requesting the session before processing the client's request. The NETCONF message is encoded in XML using the UTF-8 character set, and for SSH a special message end sequence of six characters is used to provide the message frame. Thus, NETCONF uses sessions in the transport layer because some procedures require more than one protocol operator and can clear the work done in that session if the session is terminated or dead. The features of NETCONF are identified by capability URIs, where one session begins by exchanging capability views between the network manager and management equipment. NETCONF's RPC operations operate on a configuration data store, which is a conceptual place for storing and accessing information, and can be implemented using a file or database. NETCONF defines three standard configuration data repositories to support different transactions and persistent operations within a network device.

2 is a diagram illustrating a data store of the NETCONF protocol model according to one embodiment. Referring to FIG. 2, a running data store refers to a configuration data store that holds the entire configuration currently active on the device. And a running configuration data store must always exist. Provide the ability for the server to write directly or indirectly to the <running> configuration. A candidate data store also refers to a data store that can be manipulated without affecting the current configuration of the device and can be migrated to a running configuration data store so that all devices support the candidate configuration data store I do not. Meanwhile, the client can edit the candidate configuration and commit the changes to the running configuration. Changes to the candidate configuration do not take effect until committed. A startup data store is a data store that holds the configuration that the device loaded at boot time, and is only provided on devices that separate the startup configuration data store and the running configuration data store. This database can be used if the startup function is supported by the server. With this configuration, the server does not automatically save changes to the <running> configuration when the device is restarted. Instead, it executes the <copy-config> You must update the configuration to make the changes take effect after the next reboot.

On the other hand, the content layer of NETCONF constructs a message using the namespace defined in the YANG module, and uses the delimiter used in the YANG model as the local name of the XML. Messages in the RPC layer must be valid XML case documents, and all operators use the NETCONF-specific RPC mechanism. This RPC mechanism has a feature of returning the operation result, whereas SET PDU of simple network management protocol (SNMP) does not return the operation result. The <rpc> element must contain the mandatory message-id and all operators are defined using the "rpc" descriptor described in the YANG model. The input descriptor included in the rpc definition specifies the argument values required for the protocol operator. Each data type in the input descriptor is located at the child node of the function node. If there is no output descriptor in the rpc definition, only the Ok element is returned. If the output is described, the result is made up of the child nodes of the rpc-reply node. Also, if an error occurs during operation, NETCONF returns 1 or adds an <rpc-error> child node to the <rpc-reply> node.

On the other hand, the protocol operators provided in the operating layer of NETCONF are defined as shown in Table 1.

As shown in Table 1, the lock operator among the operators provided by the operating layer of NETCONF provides a function of wrapping the whole part for data synchronization when updating the information of the candidate configuration data repository or the execution configuration data repository.

On the other hand, since a plurality of network managers want to control a single network device at the same time, data inconsistency may occur (absence of data synchronization) or the set time may be delayed when the < lock > The <lock> operator in the operating layer is first performed before the data update in order to eliminate such problems as data inconsistency or setup delay. The <lock> operator can be efficiently and simply implemented in terms of data protection , Since data update performs all operations with a single lock, there is a problem in that, when updating data of a network device by a plurality of network managers, a loss in setting speed is seen.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and method for improving the operation layer of a NETCONF protocol using an improved lock operation in a network management system.

The technical objects to be achieved by the present disclosure are not limited to the above-mentioned technical subjects, and other technical subjects which are not mentioned are to be clearly understood from the following description to those skilled in the art It will be possible.

According to one aspect of the present disclosure, there is provided a method of operating an operation layer improvement apparatus of a NETCONF protocol (network configuration protocol) in a network management system, the method comprising: receiving a lock operator execution instruction provided in an operating layer of a NETCONF protocol step; Performing a lock operation only on a target node when performing a lock operation by a precise locking method in response to the received instruction; And adding a marking field for logical deletion to the target node when a delete-config operator is performed on the target node, the operation method of the operating layer improving apparatus of the NETCONF protocol may be provided.

The features briefly summarized above for this disclosure are only exemplary aspects of the detailed description of the disclosure which follow, and are not intended to limit the scope of the disclosure.

According to the present disclosure, an apparatus and method for improving the operating layer of the NETCONF protocol using an improved lock operation in a network management system can be provided.

Further, according to the present disclosure, not only the data synchronization problem can be solved by using the improved lock operation function, but also the network equipment setting time can be shortened.

The effects obtainable from the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below will be.

1 is a diagram illustrating layers of a NETCONF protocol model according to one embodiment.
2 is a diagram illustrating a data store of the NETCONF protocol model according to one embodiment.
3 is a flowchart illustrating an operation method of an operation layer improvement apparatus of a NETCONF protocol in a network management system according to an exemplary embodiment.
FIG. 4 illustrates a delete-config operation performed on a target node according to an exemplary embodiment; FIG. And logical and physical processing operations on the target node.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, which will be easily understood by those skilled in the art. However, the present disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present disclosure rather unclear. Parts not related to the description of the present disclosure in the drawings are omitted, and like parts are denoted by similar reference numerals.

In the present disclosure, when an element is referred to as being "connected", "coupled", or "connected" to another element, it is understood that not only a direct connection relationship but also an indirect connection relationship May also be included. Also, when an element is referred to as " comprising " or " having " another element, it is meant to include not only excluding another element but also another element .

In the present disclosure, the terms first, second, etc. are used only for the purpose of distinguishing one element from another, and do not limit the order or importance of elements, etc. unless specifically stated otherwise. Thus, within the scope of this disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and similarly a second component in one embodiment may be referred to as a first component .

In the present disclosure, the components that are distinguished from each other are intended to clearly illustrate each feature and do not necessarily mean that components are separate. That is, a plurality of components may be integrated into one hardware or software unit, or a single component may be distributed into a plurality of hardware or software units. Thus, unless otherwise noted, such integrated or distributed embodiments are also included within the scope of this disclosure.

In the present disclosure, the components described in the various embodiments are not necessarily essential components, and some may be optional components. Thus, embodiments consisting of a subset of the components described in one embodiment are also included within the scope of the present disclosure. Also, embodiments that include other elements in addition to the elements described in the various embodiments are also included in the scope of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

3 is a flowchart illustrating an operation method of an operation layer improvement apparatus of a NETCONF protocol in a network management system according to an exemplary embodiment.

In the early days of network management, network management through monitoring was the main task, centered on single-function equipment. However, modern network management functions are moving toward how to provide new network services using heterogeneous equipment, quickly and effectively. In order to provide various network technologies such as IoT, Cloud, and Big Data, which have become hot topics, NETCONF has emerged as a new network equipment setting standard that goes beyond the limit of existing SNMP and CLI. However, due to various problems scattered by each layer, It takes a lot of time to update the simultaneous data information. Therefore, according to the operating method of the operating layer improving device of the NETCONF protocol utilizing the lazy synchronization method of the present disclosure, it is possible to improve the inefficient existing lock operator and simultaneously control the access to the data, have.

In operation S300, the operating layer improving apparatus of the NETCONF protocol according to an embodiment may receive a lock operator executing instruction provided in the operating layer of the NETCONF protocol. According to an exemplary embodiment, the operating layer improving apparatus of the NETCONF protocol can receive a lock operator execution instruction provided from an operating layer of the NETCONF protocol from a network operator.

In operation S310, the operating layer improving apparatus of the NETCONF protocol according to the embodiment may perform a lock operation only on the target node when the lock operation is performed by the precise locking method in response to the instruction received in operation S300.

According to one embodiment, the operating layer improving apparatus of the NETCONF protocol can perform a lock operation by an entire lock method or a lock operation by a precise lock method when a lock operation is performed. The whole locking method locks the whole data, and the precision locking method locks some data. In the case of the entire locking method, since the implementation is simple, data can be updated with a single lock. However, in an environment where there are a plurality of network managers, the locking function must be added in order to ensure data synchronization. The operation speed can be remarkably slowed down. On the other hand, the precise locking method can provide a high degree of parallelism to the multi-network administrators by locking the individual data structures differently from the case of the whole locking method.

Meanwhile, the operating layer improving apparatus of the NETCONF protocol according to an embodiment can perform a lock operation only for a target node when performing a lock operation by a precise lock method in response to an instruction received in step S300. When a lock operation by precise locking method is performed, when searching for a data structure in order to provide data synchronization, a node satisfying the condition (that is, a target node) is moved while repeating lock and unlock operations. Can be performed. Such a precise locking scheme may lead to a dramatic speedup in a large number of network administrators' environments, but the locking and unlocking frequently occurs in searching the data structure, resulting in a search overhead. Therefore, the operating layer improving apparatus of the NETCONF protocol according to the embodiment can perform the lock operation only for the target node in the node search. For example, the operating layer improving apparatus of the NETCONF protocol can perform a lock operation only for a target node without locking and unlocking the node, thereby reducing a frequently occurring lock and unloading load.

In step S320, when the delete-config operator is executed on the target node, the operation layer improvement apparatus of the NETCONF protocol according to the embodiment may add a marking field for logical deletion to the target node.

According to one embodiment, the operation layer improvement apparatus of the NETCONF protocol can perform the operation as it is when an operator other than the delete-config operator (for example, edit-config, get-config, etc.) When the delete-config operator is executed on the target node, a marking field for logical deletion can be added to the target node. When the lock operation is performed only on the target node without locking and unlocking the node, if the delete operation is performed on the target node, data integrity may be caused. Therefore, the operation layer of the NETCONF protocol according to one embodiment The device may add a marking field for logical deletion to the target node if the delete-config operator is performed on the target node.

Also, according to one embodiment, the operation layer improving apparatus of the NETCONF protocol can perform a physical deletion after logically deleting a corresponding node by adding a marking field when deleting a target node. FIG. 4 illustrates a delete-config operation performed on a target node according to an exemplary embodiment; FIG. Referring to FIG. 4, the operation layer improvement apparatus of the NETCONF protocol includes a marking field indicating a logical deletion 410 when a deltete-config operator is performed on a target node Add it to the target node, and perform a physical delete (420) on the target node in the future. On the other hand, the time point of the physical deletion of the target node to which the marking field is added may be determined according to a development language (for example, a garbage collection of JAVA).

1 to 4, a description has been given of a method of performing a lock operation using an improved precision locking scheme in the operating layer improving apparatus of the NETCONF protocol according to an embodiment of the present disclosure.

According to the present disclosure, an apparatus and method for improving the operating layer of the NETCONF protocol using a lock operation in a network management system can be provided.

Further, according to the present disclosure, not only the data synchronization problem can be solved by using the improved lock operation function, but also the network equipment setting time can be shortened.

Meanwhile, in accordance with one aspect of the present disclosure, software or a computer-readable medium having executable instructions may be provided to perform the method of operation of the operating layer remediation apparatus of the NETCONF protocol have. The executable instructions may include a step of receiving a lock operator execution instruction provided in an operating layer of the NETCONF protocol, performing a lock operation only on a target node when performing a lock operation by a precise locking method in response to the received instruction And adding a marking field for logical deletion to the target node when the delete-config operator is performed on the target node.

Although the exemplary methods of this disclosure are represented by a series of acts for clarity of explanation, they are not intended to limit the order in which the steps are performed, and if necessary, each step may be performed simultaneously or in a different order. In order to implement the method according to the present disclosure, the illustrative steps may additionally include other steps, include the remaining steps except for some steps, or may include additional steps other than some steps.

The various embodiments of the disclosure are not intended to be all-inclusive and are intended to be illustrative of the typical aspects of the disclosure, and the features described in the various embodiments may be applied independently or in a combination of two or more.

In addition, various embodiments of the present disclosure may be implemented by hardware, firmware, software, or a combination thereof. In the case of hardware implementation, one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays A general processor, a controller, a microcontroller, a microprocessor, and the like.

The scope of the present disclosure is to be accorded the broadest interpretation as understanding of the principles of the invention, as well as software or machine-executable instructions (e.g., operating system, applications, firmware, Instructions, and the like are stored and are non-transitory computer-readable medium executable on the device or computer.

Claims (1)

An operation method of an operation layer improvement apparatus of a NETCONF protocol (network configuration protocol) in a network management system,
Receiving a lock operator execution instruction provided in an operating layer of the NETCONF protocol;
Performing a lock operation only on a target node when performing a lock operation by a precise locking method in response to the received instruction; And
And adding a marking field for logical deletion to the target node when a delete-config operator is performed on the target node.

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