KR19990057156A - Interface device between heterogeneous network element and city phone operation management system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an interface device between a heterogeneous network element and a city phone operation management system.

2. The technical problem to be solved by the invention

The present invention, in developing a city phone operation management system for centralized centralized management of CT-2 network elements, the interface device between the heterogeneous network element and the city phone operation management system corresponding to each heterogeneous network element To provide.

3. Summary of Solution to Invention

The present invention provides an ASCII network element interface device for matching a network element supporting an ASCII protocol with a city phone operation management system; An SNMP network element interface device for matching an SNMP network element supporting a simple network management protocol (SNMP) management protocol and a city phone operation management system; It includes a CMIP network element interface device for matching the CMIP network element and the city phone operation management system that supports the Common Management Information Protocol (CMIP) protocol.

4. Important uses of the invention

The present invention is used in the operation management system.

Description

Interface device between heterogeneous network element and city phone operation management system

The present invention provides a heterogeneous network element and a cityphone operation and management system (COMS) developed to manage network elements of various and different characteristics in a cordless telephone second generation (CT-2) network. It relates to an interface device for matching.

The terms used in the present invention are defined as follows.

ASCII (American Standard Code for Information Interchange) stands for Alphanumeric code system.

Simple Network Management Protocol (SNMP) is designed to solve the communication problems between different types of networks, and the initial goal is a better design and Band-Aid solution until the network manager is available. It was. However, better choices were not available, and SNMP was chosen as the network management protocol.

The way SNMP works is very simple: it exchanges network information through messages called Protocol Data Units (PDUs). Here, the PDU message may be regarded as an object including variables having a title and a value.

SNMP has five types of PDUs to monitor the network, four of which are used to read terminal data and set up terminal data respectively, and the other type of trap is terminal start-up or It is used to observe network events such as shutdown.

Common Management Information Protocol (CMIP) is designed to make up for the shortcomings of SNMP and enables more detailed network management than SNMP.

The basic design of CMIP is similar to SNMP and uses PDU as a variable to observe the network. However, CMIP has 11 types of PDUs.

CMIP is a very well-designed network management system that improves many problems of SNMP. However, in order to improve the problems of SNMP, CMIP itself must be a large number of complete management systems, so only high-performance network devices can support the operation of CMIP.

Network Element (NE) indicates a network element to be managed.

Management Information Base (MIB) is used to define the information that SNMP and CMIP can obtain from the network.

The MIB is organized like a tree, where the top of the tree is the most general information available about the network, and each branch of the tree has more detailed information about a particular network area.

Transmission Control Protocol and Internet Protocol (TCP / IP) are Layer 4/3 protocols in the Open System Interconnection (OSI) Layer 7 protocol stack.

Cityphone Operation and Management System (COMS) is a centralized operation management system for managing CT-2 networks.

The operator interface unit (OIU) is an operator interface of the COMS, and is composed of a graphical user interface (GUI).

Main Function Unit (MFU) is a device that performs the main network management functions of COMS. It provides fault, performance, configuration, and report management services.

A network element interface device is a network element access device (NAU: NE Access Unit) between a COMS and a network element, and there are three types of ASCII, SNMP, and CMIP depending on the type of network element to be connected.

Telecommunications Management Network (TMN) is recommended by the Telecommunication Standardization Secter of International Telecommunication Union (ITU-T) as the M.3xxx standard to help service providers manage their networks. Specialized to. That is, TMN is a network of systems for managing a communication network that provides services to customers.

FIG. 1 is a diagram illustrating an interface between a general operation management system and a network element. In the drawing, "10" represents an operation management system, and "15, 16" represents an ASCII network element (NE).

Referring to FIG. 1, a general operation management system 10 currently commercialized includes a graphic user interface (GUI) device 11, a text operator interface device 12, and a main function module 13. And an ASCII communication device 14 which is in charge of communication with the ASCII network elements 15 and 16.

As the network element connected to the ASCII communication apparatus 14, there are an ASCII network element 15 having a lower protocol of X.25 and an ASCII network element 16 of TCP / IP.

In the related art, the components of the operation management system 10 are mounted on one physical hardware platform to perform mutual functions. Therefore, if the size of the network fluctuates or the system performance is degraded, it is impossible to expand or reconfigure the system immediately and efficiently, and ultimately, the role of the real-time operation management system 10 may be paralyzed.

In particular, in the case of a service network composed of heterogeneous network elements, it is impossible to construct an operation management system 10 having a fundamentally unified view, and thus, a problem of developing an operation management system 10 separately according to characteristics of network elements is required. there was.

Accordingly, the present invention devised to solve the conventional problems as described above, in developing a city phone operation management system for centralized centralized management of CT-2 network elements, each heterogeneous network element The purpose is to provide an interface device between the heterogeneous network elements and the city phone operation management system corresponding thereto.

1 is a diagram illustrating an interface between a general operation management system and a network element.

2 is an exemplary configuration diagram of a hardware system to which the present invention is applied.

Figure 3 is a block diagram of an embodiment of an ASCII network element interface device according to the present invention.

Figure 4 is a block diagram of an embodiment of a simple network management protocol (SNAP) network element interface apparatus according to the present invention.

5 is a block diagram of an embodiment of a common management information protocol (CMIP) network element interface device according to the present invention;

* Explanation of symbols for the main parts of the drawings

20: City phone operation management system (COMS)

27: ASCII network element interface device

28: Simple Network Management Protocol (SNMP) network element interface device

29: Common Management Information Protocol (CMIP) network element interface device

201 to 203: ASCII network element (NE)

204: Simple Network Management Protocol (SNMP) Network Element (NE)

205: Common Management Information Protocol (CMIP) Network Element (NE)

In order to achieve the above object, the present invention provides an ASCII interface between a city phone operation management system (COMS) and a network element, comprising: local management information repository means for storing internal management information; Communication server means for mediating all communication with the network element; Asynchronous alarm processing means for processing asynchronous events such as randomly generated alarms or status messages; And synchronous control means for controlling said asynchronous alarm processing means and said network element.

In addition, in the simple network management protocol (SNMP) interface between the city phone operation management system (COMS) and the network element, a command received from the framework of the city phone operation management system is changed into a simple network management protocol (SNMP) reading and setting request. Network element access processing means for transmitting to the network element and receiving a response from the network element; And sink processing means which is driven according to a start command of the network element access processing means and receives an alert message from the network element via a trap.

In addition, in the common management information protocol (CMIP) interface between the city phone operation management system (COMS) and the network element, the command received from the framework of the city phone operation management system is transmitted to the network element access server processing means, and the network element Network element access client processing means for receiving a response from an access server processing means and sending it to the framework; Said network element access server processing means having an application program interface for performing functions and storing error and trace records by referring to said Open Systems Intersystem Dictionary (OSI) dictionary and configuration files of said framework; ; And Common Management Information Protocol (CMIP) server processing means responsible for the upper application layer, presentation layer, and session layer of the Open Intersystem Interconnection (OSI) protocol stack.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exemplary configuration diagram of a hardware system to which the present invention is applied.

The hardware system to which the present invention is applied includes the city phone operation management system (COMS) 20, the ASCII, the simple network management protocol (SNMP), and the common management information protocol (CMIP) network element (NE) interface device (27). To 29), a plurality of network elements 201 to 205, and a plurality of connecting portions 2a and 2b.

The city phone operation management system (COMS) 20 can be broadly classified as follows: domain management, registration management of system entities, system security management, and notification of events. A COMS framework 21 composed of a Management Information Repository (MIR) 211 for storing mechanism processing and common management information, and an operator interface device 22 or 23 for displaying on a screen in graphic or text to the operator. ), The main unit (24 to 26), the failure management, performance management, and configuration management to perform the network operation management function of the city phone operation management system 20, for connecting the respective devices (21 to 26) It is classified into the connection part 2a.

The ASCII, SNMP, and CMIP network element interface devices 27 to 29 depend on the characteristics of the network element responsible for communicating with the actual network elements 201 to 205.

The connecting portion 2b connects the framework 21 in the system operation management system 20 with the ASCII, SNMP, and CMIP network element interface devices 27 to 29.

The network elements 201 to 205 connected to the ASCII, SNMP, and CMIP network element interface devices 27 to 29 are classified as follows, in which the underlying protocols of the network elements supporting the ASCII protocol are RS-232, X, respectively. .25, and ASCII network elements 201 to 203 which are TCP / IP, SNMP network element 204 supporting SNMP, and CMIP network element 205 supporting CMIP.

City phone operation management system 20 is a centralized system for managing the CT-2 network, but itself supports a distributed architecture (Distributed Architecture). That is, the connections 2a and 2b connected to the framework 21 may be mounted on different hardware platforms to perform functions. Therefore, the city phone operation management system 20 can be constructed in a logical / physical distributed structure while centrally managing the CT-2 network. Therefore, the city phone operation management system 20 is efficient in consideration of network size, capacity of management data, system performance, and the like. Can also be established as a relatively inexpensive operation management system.

FIG. 3 is a block diagram of an embodiment of an ASCII network element interface device according to the present invention, in which "31" is an asynchronous alarm processing unit, "32" is a local management information repository, and "33" is a synchronous control unit. And "34" represent communication servers, respectively.

The ASCII network element interface device 27 is an asynchronous alert processor 31 and a network element for randomly generated messages to provide two communication channels between the framework 21 and the network elements 201 to 203. And a bidirectional synchronization control unit 33 for controlling the 201 to 203.

The communication server 34 is a physical interface to the network elements 201 to 203, and arbitrates all communication with the network elements 201 to 203. There are three types of communication servers 34, supporting TCP / IP, X.25, and RS-232 protocols.

The local management information repository 32 stores internal management information in the ASCII network element interface device 27.

The asynchronous alarm processing unit 31 that processes asynchronous events such as alerts or status messages consists of an action executor 311 and an asynchronous message parser 312.

The asynchronous message parser 312 analyzes the message stream received from the network elements 201 to 203, extracts a predefined meaningful message part, stores it in an item set, and operates on the predefined action list. Determine the action to be performed by the executor 311.

Action executor 311 performs the actions determined in asynchronous message parser 312. At this time, typical operations performed include OSI event generation, attribute value update, operation state attribute update and state change event generation, and active alarm list management of network elements, and actions for additional management functions may be defined and executed.

The synchronization controller 33 controls the ASCII network element interface device 27 and is composed of a COMS command manager 331, a network element response parser 332, and a network element command generator 333.

The COMS command manager 331 handles bidirectional translation of the response of the network elements 201 through 203 corresponding to the COMS command, and the network element command generator 333 processes the translation into the command syntax, and the network element response parser. 332 processes and responds to command responses from network elements 201 through 203 to CMOS command manager 331.

4 is a block diagram of an embodiment of a simple network management protocol (SNAP) network element interface apparatus according to the present invention, in which "41" is a TCP / IP NAU process and "42" is a TCP / IP sink. Represent each process.

The Simple Network Management Protocol (SNAP) network element interface device 28 is composed of a TCP / IP NAU process 41 and a TCP / IP sink process 42.

The TCP / IP NAU process 41 converts the command received from the framework 21 into an SNMP Read and SNMP Set request and forwards it to the network element 204 and sends a response from the network element 204. Receives and sends back to the framework (21).

The TCP / IP sink process 42 is driven according to the start command of the TCP / IP NAU process 41 and receives an alert message from the network element 204 via a trap.

The network element 204 defines information as a management information base (MIB) and transmits and receives information through a management agent (Agent).

FIG. 5 is a block diagram of an embodiment of a common management information protocol (CMIP) network element interface apparatus according to the present invention, in which “51” is a CMIP NAU client process, “52” is a CMIP NAU server process, and “53”. Each represents a CMIP server process.

The common management information protocol (CMIP) network element interface device 29 is composed of a CMIP NAU client process 51, a CMIP NAU server process 52 having an application program interface 521, and a CMIP server process 53. .

The CMIP NAU client process 51 sends a command received from the framework 21 to the CMIP NAU server process 52, receives a response from the network element 205 from the CMIP NAU server process 52, and frames the frame again. It transfers to the workpiece 21.

The CMIP NAU server process 52 performs functions with reference to the OSI Dictionary file and configuration file of the framework 21, and stores error and trace records.

The CMIP server process 53 is responsible for the upper application layer, presentation layer, and session layer of the OSI 7 layer protocol stack. Herein, the service elements in the application layer may include a common management information service element (CMISE), a remote operation service element (ROSE), and a common communication control service element (ACSE). Control Service Element).

The lower protocol stack 501 is supported on the hardware platform on which the COMS 20 operates. Here, the lower protocol refers to a lower transport layer, a network layer, a data link layer, and a physical layer of the OSI 7 layer protocol stack.

The network element 205 defines information as a management information base (MIB) and transmits and receives information through a management agent (Agent).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

According to the present invention as described above, centralized unified management of heterogeneous network elements in the CT-2 network composed of various network elements is possible, object-oriented management information modeling technology and TMN-based interface implementation technology There is an effect that can be secured.

Claims (8)

In the ASCII interface between the city phone operation management system (COMS) and the network element, Local management information repository means for storing internal management information; Communication server means for mediating all communication with the network element; Asynchronous alarm processing means for processing asynchronous events such as randomly generated alarms or status messages; And Synchronous control means for controlling said asynchronous alarm processing means and said network element Interface device between the city phone operation management system (COMS) and the network element made, including. The method of claim 1, The asynchronous alarm processing means, Asynchronous message parsing means for analyzing the message stream received from the network element, extracting a predefined meaningful message part, storing it in a list, and determining the action to be executed; And Action execution means for performing the actions determined in the asynchronous message parsing means Interface device between the city phone operation management system (COMS) and the network element made, including. The method according to claim 1 or 2, The synchronous control means, Command management means for processing a bidirectional translation of a response of the network element corresponding to a command; Command generating means for translating the command of the command managing means into a command syntax; And Command response parsing means for processing the response to the command from the network element and transmitting it to the command management means. Interface device between the city phone operation management system (COMS) and the network element made, including. The method of claim 3, wherein The city phone operation management system, The interface between the city phone operation management system (COMS) and the network elements, which can be constructed as a logical / physical distributed architecture while managing the second generation wireless telephone (CT-2) network centrally. Device. In the simple network management protocol (SNAP) interface between the city phone operation management system (COMS) and network elements, A network element for converting a command received from the framework of the city phone operation management system into a simple network management protocol (SNMP) read and set request and transmitting it to the network element, and receiving a response from the network element and transmitting the response to the framework. Access processing means; And Sink processing means which is driven according to a start command of said network element access processing means and receives an alert message through a trap from said network element Interface device between the city phone operation management system (COMS) and the network element made, including. The method of claim 5, The city phone operation management system, The interface between the city phone operation management system (COMS) and the network elements, which can be constructed as a logical / physical distributed architecture while managing the second generation wireless telephone (CT-2) network centrally. Device. In the common management information protocol (CMIP) interface between the city phone operation management system (COMS) and network elements, Network element access client processing means for transmitting a command received from the framework of the city phone operation management system to network element access server processing means, receiving a response from the network element access server processing means, and transmitting the response to the framework; Said network element access server processing means having an application program interface for performing functions and storing error and trace records by referring to said Open Systems Intersystem Dictionary (OSI) dictionary and configuration files of said framework; ; And Common Management Information Protocol (CMIP) server processing means responsible for the upper application layer, presentation layer, and session layer of the Open Systems Interconnection (OSI) protocol stack Interface device between the city phone operation management system (COMS) and the network element made, including. The method of claim 7, wherein The city phone operation management system, The interface between the city phone operation management system (COMS) and the network elements, which can be constructed as a logical / physical distributed architecture while managing the second generation wireless telephone (CT-2) network centrally. Device.