KR20030083491A - Network Interface Management Apparatus and Method for Consistency Maintenance of Management Information between CLI-base Network Management System and Network Elements - Google Patents

Abstract

PURPOSE: A network management interface operating system and method is provided to transmit plural CLI(Command Line Interface) commands like one command when the policy data is transmitted to a network equipment by using the CLI. CONSTITUTION: The system comprises a logging engine(111), a CLI converter(112), and a network equipment interface(113). The logging engine(111) offers an interface with a network equipment management system, receives policy data transmitted from the network equipment management system, and logs the data. The CLI converter(112) receives the policy data from the logging engine, and converts the policy data into a group of CLI commands. The network equipment interface(113) transmits converted CLI commands to the network equipment.

Description

Network Interface Management Apparatus and Method for Consistency Maintenance of Management Information between CLI-base Network Management System and Network Elements}

The present invention relates to an implementation of a network management system, and more particularly, to transmit policy information to a network device using the CLI in a network device management system based on a command line interface (hereinafter referred to as CLI). Through the network management interface, it is possible to log the plurality of CLI commands atomically as a single command and to maintain the consistency of policy information between the network equipment and the CLI-based network device management system that maintains the consistency between the network management interface and the network device. An apparatus and method for operating a network management interface for maintaining and a computer readable recording medium having recorded thereon a program for realizing the same.

As a method for transmitting a configuration command to a conventional network equipment, there are various methods such as Simple Network Management Protocol (SNMP) and Common Object Policy Service (COPS). However, the SNMP has the advantage of being a relatively simple and easy to understand protocol, but has a disadvantage in that it is too simple to deliver the network-related policy information, which is more complicated in recent years, and insufficient security-related functions. In addition, the COPS protocol is a protocol proposed by the IETF to overcome this advantage. This protocol has a well-defined object-oriented message structure for sending policy information to network devices. However, many devices still support SNMP but do not support the COPS protocol.

CLI, a telnet-based manual interface for inputting increasingly complex policy information into network devices, is becoming more complicated to cope with the complexity of policy information, but communicates with devices that must be supported to centrally manage policy information. As described above, protocols such as SNMP and COPS do not overcome the limitations such as simplicity or lack of support, and an alternative method for overcoming them is urgently needed.

On the other hand, a method of maintaining data consistency in the system is disclosed in Korean Patent Application No. 331731. The method comprises a disk array which is a storage device having a fast search speed and a FAULT TOLERENT function as a redundant array of a plurality of computers and a low cost disk composed of a monitoring process and an application processor, wherein the computer and the disk array Because of the SCSI connection, the computer is applied to a proprietary system that can use the hard disks of a disk array as hard disks inside a computer to maintain data consistency. However, the method of maintaining data consistency is applied to a centralized intrinsic use system, and also focuses on a file system, and there is no description of a method of maintaining consistency of policy information between distributed network equipment and a network equipment management system. It could not be applied as a method for exchanging policy information between distributed heterogeneous network devices and maintaining the policy information consistency.

The present invention has been proposed to solve the above problems, the management of CLI-based network equipment when transmitting policy information to the network equipment using the CLI to integrate the equipment providing only the CLI interface without understanding COPS or SNMP It is an object of the present invention to provide a computer readable recording medium recording a network management interface operating apparatus and method for maintaining policy information consistency between a system and a network device, and a program for realizing the same.

1 is a configuration diagram of an embodiment of a network equipment management system according to the present invention.

2 is a configuration diagram of an embodiment of a logging engine according to the present invention.

3 is a flowchart illustrating an embodiment of a recovery process for transmitting atomic CLI commands and maintaining consistency between a network management interface and network equipment according to the present invention.

Explanation of symbols on the main parts of the drawings

101: Logging Engine 102: CLI Converter

103: Equipment Interface 201: Memory Resident Policy Manager

202: last policy log 203: log

In order to achieve the above object, the present invention provides a network management interface device for maintaining policy information consistency between a command interface (CLI) -based network equipment management system and network equipment,

A logging engine unit providing an interface with the network equipment management system and receiving, logging, and preserving policy information transmitted from the network equipment management system;

A CLI converter which receives the policy information from the logging engine and converts the policy information into a set of CLI commands; And

It includes a network device interface unit for transmitting the CLI command converted by the CLI conversion unit to the network device.

In addition, in order to achieve the above object, the present invention provides a network management interface operating method for maintaining policy information consistency between a command interface (CLI) -based network equipment management system and network equipment,

A first step of storing the policy information transmitted from the network equipment management system in a memory and storing the corresponding policy information in a log format;

Converting the stored policy information into a set of CLI commands;

Transmitting the converted CLI command to the network device;

A fourth step of storing the CLI command transmitted to the network device if the transmission is normal in the third step and invalidating the CLI command transmitted to the network device if the transmission error occurs; And

And a fifth step of transmitting each result of the fourth step to the network equipment management system.

Furthermore, the present invention for achieving the above object is, in the network management interface operating system for maintaining the consistency of policy information between the network interface management system and the command interface (CLI) -based network equipment,

A first function of storing the policy information transmitted from the network equipment management system in a memory and storing the corresponding policy information in a log format;

A second function of converting the stored policy information into a set of CLI commands;

A third function of sending the converted CLI command to the network device;

A fourth function of storing a CLI command transmitted to the network device when the transmission is normal in the third function and invalidating the CLI command transmitted to the network device when the transmission error occurs; And

A computer readable recording medium having recorded thereon a program for realizing a fifth function of transmitting each result of the fourth function to the network equipment management system.

The present invention is a network system management system through the network management interface implemented by using the logging to maintain the consistency between the network device management system and the network equipment atomically transmit the device configuration command to the actual network equipment through the CLI among the management system Policy information consistency between network devices and network equipment is provided.

The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a network equipment management system according to the present invention, which illustrates a configuration of a network equipment management system and a relationship with a network using a network management interface. As shown in FIG. 1, the network equipment management system 100 communicates with the network management interface module 110 using an interface of the logging engine 111. The logging engine unit 111 logs the policy information transmitted from the network equipment management system 100 and transfers the policy information to the CLI conversion unit 112. The CLI converting unit 112 converts the delivered policy information into a set of CLI commands. The CLI conversion unit 112 transmits the converted result to the equipment interface unit 113. The device interface unit 103 connects to the network device 114 through the Internet network 120 and delivers the converted CLI commands.

If a problem occurs in the delivery of the CLI commands, the network management interface module 110 maintains atomicity in delivering CLI commands according to the procedure shown in FIG. The device management system 100 and the actual network equipment 114 will be maintained in consistency.

2 is a configuration diagram of an embodiment of the logging engine 111 of the network management interface module 110 according to the present invention. As shown in FIG. 2, the logging engine unit 111 is composed of three parts: the memory resident policy manager 201, the last policy log 202, and the log 203. The memory resident policy manager 201 of the logging engine unit 111 stores the policy information in memory once before delivering the policy information to the CLI converter 112, and then corresponds to the last policy log 202. Insert policy information in log format. Then, the policy information is transferred to the CLI conversion unit 112.

The CLI converting unit 112 converts the corresponding policy information into a series of CLI commands and transmits the converted CLI command to the device interface unit 113 to transmit the converted CLI commands to the network device 114. At this time, if the transmission result is successful, the memory resident policy manager 201 adds the log recorded in the last policy log 202 to the log 203 and then deletes the contents of the last policy log 202. Throw it away.

After the above process, the contents of the log 203 match the contents of the policy information transmitted to the network equipment. Thus, consistency between the network management interface module 110 and the network equipment 114 is maintained.

In this case, if the device interface unit 113 transmits the converted CLI commands to the network device 114, an error occurs, or an error occurs internally in the CLI conversion unit 112, and thus the processing is stopped. In the case where an error occurs in the logging engine unit 111 and the processing is stopped, the consistency between the network management interface and the network equipment can be restored through the recovery procedure of FIG. 3 described below.

3 is a flowchart illustrating a recovery process when an error occurs between the network management interface module 110 and the network device 114 according to the present invention. As shown in FIG. 3, when the first error occurs in the CLI conversion unit 112 (301), the CLI conversion unit 112 sets the policy information transmitted from the logging engine unit 111 to a CLI command set. Report to the logging engine 111 that the conversion has failed (302). The logging engine 111 receiving the conversion failure report deletes the contents of the last policy log (303) to maintain consistency.

In addition, when the second error occurs in the device interface unit 113, when the connection with the network device 114 is abnormally terminated and it is not sure whether the command is correctly transmitted to the network device 114, communication If an error occurs that is not related, there are two main types. In both cases described above, the processing method is the same. That is, when an error occurs in the device interface unit 113 (304), the device interface unit 113 immediately reports to the logging engine unit 111 that the CLI command transmission failed (305). The logging engine unit 111 that has received the transmission failure report processes the contents of the last policy log appropriately (306), passes it back to the CLI conversion unit 112 (307), and converts the converted result into the device interface unit 113. And the network device 114 to delete the policy information to be transmitted previously (308). Then, after the policy information is deleted, the last policy log is deleted 309 to maintain consistency between the network device 114 and the network management interface module 110.

In addition to the two cases of the first error occurrence 301 and the second error occurrence 304, the entire network management interface module 110 may be terminated and restarted for some reason, in which case the network management The interface module 110 checks the existence of the last policy log after restart, and takes the same solution as the case of the second error 304 if the log exists, and does not take any action if it does not exist. Thereby maintaining consistency between the network management interface 110 and the network equipment 114.

The consistency between the network equipment management system and the network equipment using this network management interface is thus preserved since the consistency between the network management interface and the network equipment is maintained.

The method of the present invention as described above is configured in the form of a program library of the network management interface, so that the recording medium (CD-ROM, RAM, ROM, floppy disk) in a computer-readable form for use in various network equipment management systems. , Hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, the present invention enables to efficiently maintain the consistency between the network device management system and the network device while atomically transmitting policy information to the network device using the CLI.

In addition, it manages network equipment by reducing maintenance problems and errors.

Furthermore, since most network equipment provides CLI commands, the technical expectation of the present invention is high.

Claims (8)

A network management interface device for maintaining policy information consistency between a command interface (CLI) based network device management system and a network device, A logging engine unit providing an interface with the network equipment management system and receiving, logging, and preserving policy information transmitted from the network equipment management system; A CLI converter which receives the policy information from the logging engine and converts the policy information into a set of CLI commands; And And a network device interface unit for transmitting the CLI command converted by the CLI converter to the network device. The network management interface device for maintaining policy information consistency between the CLI-based network device management system and the network device. The method of claim 1, wherein the logging engine unit, A last policy log section for managing the most recent policy information log; Log unit for managing all the policy information log reflected in the network equipment; And CLI-based network device management system and network device, characterized in that it comprises a memory resident policy management unit for managing the policy information delivered from the network device management system on a memory and the last policy log unit and the contents of the log unit; Network management interface device to maintain the consistency of policy information. The method of claim 2, wherein the memory resident policy management unit, When the CLI command is successfully transmitted to the network device, the log stored in the last policy log part is stored in the log part and the contents of the last policy log part are deleted. Network management interface device to maintain policy information consistency. In the method of operating a network management interface for maintaining policy information consistency between a command interface (CLI) based network equipment management system and network equipment, A first step of storing the policy information transmitted from the network equipment management system in a memory and storing the corresponding policy information in a log format; Converting the stored policy information into a set of CLI commands; Transmitting the converted CLI command to the network device; A fourth step of storing the CLI command transmitted to the network device if the transmission is normal in the third step and invalidating the CLI command transmitted to the network device if the transmission error occurs; And And a fifth step of transmitting each result of the fourth step to the network device management system. The method of claim 4, wherein the first step, Storing the most recent policy information; And And storing the policy information reflected in the network equipment, wherein the network management interface management method is configured to maintain policy information consistency between the CLI-based network equipment management system and the network equipment. The method of claim 5, When the CLI command is successfully transmitted to the network device, the stored most recent policy information is deleted and new policy information is stored. The network for maintaining policy information consistency between the CLI-based network device management system and the network device How to operate the management interface. The method of claim 4, wherein And deleting the most recent policy information in the first step if the CLI command change error occurs. 10. A method of operating a network management interface for maintaining policy information consistency between a CLI based network device management system and a network device. In the network management interface operation system to maintain the policy information consistency between the command interface (CLI) -based network equipment management system and the network equipment, A first function of storing the policy information transmitted from the network equipment management system in a memory and storing the corresponding policy information in a log format; A second function of converting the stored policy information into a set of CLI commands; A third function of sending the converted CLI command to the network device; A fourth function of storing a CLI command transmitted to the network device when the transmission is normal in the third function and invalidating the CLI command transmitted to the network device when the transmission error occurs; And A fifth function of sending each result of the fourth function to the network equipment management system; A computer-readable recording medium having recorded thereon a program for realizing this.