KR20000046329A - Atm switching point management system independent of protocol - Google Patents

Abstract

PURPOSE: An ATM(Asynchronous Transfer Mode) switching point management system independent of a protocol is provided to manage the ATM switching point, regardless of any protocol, by accepting the CMIP(Common Management Interface Protocol) and the SNMP(Simple Network Management Protocol). CONSTITUTION: A first TMN(Telecommunication Management Network) manager(40) transmits and receives network management information with a GUI(Graphic User Interface) application program(42) through an F interface. A CMIP proxy agent(50), connected with the first TMN manager through a Q3 interface, transmits and receives an ATM management interface message through a COM(Common Object Model) interface. A second TMN manager(60) transmits and receives network management information with the GUI application program(42) through the F interface. An SNMP proxy agent(70), connected with the second TMN manager(60) through the SNMP interface, transmits and receives the ATM management interface message through the COM interface.

Description

A system for managing Asynchronous Transfer Mode Switches which is independent of protocol

The present invention relates to a protocol-independent asynchronous delivery mode switch management system, and in particular, to accommodate both the standard management interface protocol (CMIP: Common Management Interface Protocol) and SNMP (Simple Network Management Protocol) to manage ATM switches independently of the protocol It's about a system that can do that.

Telecommunication Management Network (hereinafter referred to as TMN) is a network management structure proposed to provide telecommunication network services and telecommunication network management functions, and provides a standardized interface for various operating systems and communication equipment. It is for enabling management information to be exchanged by using. The TMN's management functions are divided into five System Management Functional Areas (SMFAs): Performance Management, Failure Management, Configuration Management, Account Management, and Security Management.

Meanwhile, the network management structure of B-ISDN is a network management structure that provides management function for communication network and service and communication function between communication network and service by using manager-agent relationship. . In addition, each network element (NE), such as an ATM switch and an optical transmission system according to a synchronous digital hierarchy (SDH), is managed by each element management system (EMS). do.

1 is a configuration diagram of a conventional network element management system (EMS) for TMN management, that is, a configuration diagram of an ATM switch management system to which an ATM switch is applied as a network element. The ATM switch management system is composed of a first workstation 10 and a second workstation 20 equipped with an ATM card, and an Ethernet cable with an ATM switch 30 that is a network element (NE). Is connected.

Here, the first workstation 10 is provided with a graphical user interface application (11: GUI application) and a TMN manager (12: TMN manager), and the second workstation 20 has a TMN agent (21: TMN agent). And a Management Information Tree (22) are composed of a Proxy Architecture. At this time, the ATM switch 30 only supports UDP / IP (User Datagram Protocol / Internet Protocol) as a management protocol.

The graphical user interface application 11 and the TMN manager 12 have a TCP / IP socket interface, and the TMN agent 12 of the first workstation 10 and the TMN agent of the second workstation 20. 21 is connected to the Q3 interface. In addition, the TMN agent 21 and the ATM switch 30, which act as a proxy agent in the second workstation 20, exchange network management information using UDP / IP.

FIG. 2 is a block diagram of a conventional local management system, and a conventional local management system 20 uses a HMI machine 23 to provide a string based local management interface (IMD). / OMD: Input Message Description / Output Message Description) to communicate with the ATM switcher 30.

3 is a block diagram showing a conventional ATM switch management system, wherein a TMN agent 24, a management information tree 25 (MIT), a CASS 26, an HMI client 27, an HMI server 28, and a SROSD ( 29) to manage the ATM switch 30.

Here, SROSD 29 allows certain applications to communicate with ATM switches 30 that do not support standardized Berkely Sockets. In this case, SROS (Scalable Realtime Operating System) is an operating system operating in the main control system of the ATM switch, and consists of micro kernels that provide the basic functions and real-time parallel processing function of the operating system.

SROSD 29 is an I / O server managing an input / output system, an inter-process communication (IPC) server providing message transmission between processes, a time server providing various real-time processing functions, execution modules and various File system server used for data storage and operation, redundant server for building fault tolerance system, communication server for communication with host system, debugging server for providing source level debugging function, remote system call for distributed system (RSC: Remote System Call) server, and dynamic code binding (Dynamic Code Binding) server for dynamic server management.

The HMI server 28 and the SROSD 29 are connected by a UDP / IP socket interface, and the SROSD 29 and the ATM switch 30 communicate by UDP / IP to form a local management interface.

The HMI server 28 supports a string based IMD / OMD interface, receives a string message from a plurality of HMI clients 27, and transmits the string message to the ATM switcher via the SROSD 29. . At this time, the HMI client 27 receives a response message from the ATM exchanger 30 via the SROSD 29 and the HMI server 28.

In addition, the HMI server 28 transmits an encoded message (IMD) that handles the operation of the ATM switch to the ATM switcher 30 through the SROSD 29, and sends a result message sent from the ATM switcher 30 to the SROSD 29. It receives the input through and transmits to the TMN agent 24.

The TMN agent 24 stores information in a management information tree 25 (MIT) having a network management information base (MIB) structure, and the CASS 26 stores a local message (TM) transmitted from the TMN agent 24. Local message) is converted into a string and transmitted to the HMI server 28.

CASN (26) of the TMN Agent (Connectivity with ATM Switching System) performs a function of matching with the operation and management processor (OMP: Operation and Management Processor) of the ATM switch 30, the network with the ATM switch 30 To handle IMD / OMD message formats between management systems.

The CASS 26 analyzes the client interface function of the HMI server 28, the function of parsing and encoding TMN commands into HMI commands, and analyzes the results of the exchanges performed on TMN and HMI commands. It includes the function of encoding the agent message, the function of receiving and analyzing the system message of the exchange and the encoding of the message for the TMN agent, and the filtering of the execution result of the HMI execution command.

On the other hand, between the TMN agent (24: Agent) and CASS (26), the message format of the existing input message description / output message description (IMD / OMD) was used, the IMD / OMD message format is complicated, and also TMN standard Difficult to convert to the common management interface protocol (CMIP).

In addition, a TMN agent using CMIP, which is a standard protocol of TMN, cannot use SNMP used to interface with the Internet, and a TMN agent using SNMP cannot use CMIP.

Accordingly, the present invention has been proposed to solve the above problems, by using a predetermined AMI server providing an ATM management interface (AMI) to manage the ATM switch with a CMIP message provided from a TMN agent. The aim is to provide a management system that implements the ATM switch management system, but accepts both CMIP and SNMP, TMN's standard management interface protocols, to manage ATM switches independently of the protocol.

In order to achieve the above object, the protocol-independent asynchronous delivery mode switch management system according to the present invention exchanges predetermined network management information with a predetermined graphical user interface (GUI) application program through the F interface, and also provides a Q3 interface. A first communication management network manager to send and receive network management messages according to a predetermined standard management interface protocol (CMIP); A CMIP proxy agent connected to the first communication management network manager through the Q3 interface and exchanging predetermined ATM management interface (AMI) messages through a Component Object Model (COM) interface; A second communication management network manager that exchanges predetermined network management information with a predetermined graphical user interface (GUI) application program through an F interface, and also exchanges network management messages according to SNMP through a simple network management protocol (SNMP) interface; An SNMP proxy agent connected to the second communication management network manager through the SNMP interface and exchanging predetermined ATM management interface (AMI) messages through an element object model (COM) interface; And a database having predetermined network management information and an Open Data Base Connectivity (ODBC) interface, and the CMIP proxy agent, the SNMP proxy agent, and the graphical user interface application through the element object model (COM) interface. It is configured to include an AMI server that connects to a program to exchange messages for ATM switch management, and forms a local interface with a predetermined target ATM switch.

1 is a configuration diagram of a network element management system (EMS) for managing a conventional TMN,

2 is a configuration diagram of a conventional local management system;

3 is a block diagram showing a conventional ATM switch management system;

4 is a block diagram of an ATM switch management system according to the present invention;

5 is a format diagram of an ATM management interface (AMI) message.

* Explanation of symbols for main parts of the drawings

30: ATM exchanger 40: first TMN manager

42: Graphical User Interface Application (GUI Application)

50: CMIP Proxy Agent 51: AMI Server

52: Management Information Base

60: second TMN manager 70: SNMP proxy agent

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

4 is a block diagram of an ATM switch management system in accordance with the present invention, wherein a graphical user interface application 42, a first TMN manager 40, a CMIP proxy agent 50, a second TMN manager 60, an SNMP proxy It is composed of an agent 70, and an AMI server 51 to manage the ATM switch 30.

At this time, between the first TMN manager 40 and the graphical user interface application 42, and between the second TMN manager 60 and the graphical user interface application 42 are connected to each other via the F interface.

In addition, the element object model between the graphical user interface application 42 and the AMI server 51, between the CMIP proxy agent 50 and the AMI server 51, and between the SNMP proxy agent 70 and the AMI server 51. (COM: Component Object Model) interface is connected to each other, the AMI server 51 and the network management information database 52 is connected to each other through an ODBC (Open Data Base Connectivity) interface.

In addition, the AMI server 51 and the ATM switch 30 exchange network management information with each other through a local message using a specification and description language (SDL).

On the other hand, the graphical user interface program 42 is a graphic-based program, allowing the user who manages the ATM switcher 30 to easily control the management state or the management object.

The ATM switch management messages transmitted from the graphical user interface program 42 to the TMN are first sent to the first TMN manager 40 or the second TMN manager 60. The first TMN manager 40 and the second TMN manager 60 then send this message to the corresponding TMN proxy agents 50 and 70 via the Q3 interface.

The CMIP proxy agent 50 that receives a standard management interface protocol (CMIP) message about network management information sent from the first TMN manager 40 through a predetermined data communication network (DCN) sends the message to an ATM management interface (AMI). The message is converted into a message and transmitted to the AMI server 51.

That is, since the ATM management messages received by the CMIP proxy agent 50 have a message format according to the standard management interface protocol (CMIP), the ATM management messages of this format are connected to the ATM switcher 30 in order to connect to the ATM switcher 30. 30) should be changed into a message that can be recognized, and this message is an ATM management interface (AMI) message, and the CMIP proxy agent 50 and the AMI server 51 exchange messages with each other using these AMI messages.

In addition, the SNMP proxy agent 70 receiving the Simple Network Management Protocol (SNMP) message regarding the network management information sent from the second TMN manager 40 converts the message into an ATM management interface (AMI) message and converts the message into an AMI server ( 51).

That is, since the ATM management messages received by the SNMP proxy agent 70 have a message format according to SNMP, the ATM management messages in this format can be recognized by the ATM switch 30 in order to access the ATM switch 30. This message is an ATM management interface (AMI) message, and the SNMP proxy agent 50 and the AMI server 51 use these AMI messages to exchange messages with each other.

At this time, SNMP is a protocol used for connecting to the Internet, and the SNMP proxy agent 70 enables separate connection to the Internet network.

Of course, the CMIP proxy agent 50 and the SNMP proxy agent 70 also perform the reverse process. For each ATM management interface (AMI) message received from the AMI server 51, each of the standard management interface protocol (CMIP) messages or After converting into an SNMP message, it is transmitted to the corresponding TMN manager (40, 60).

As described above, the CMIP proxy agent 50 and the SNMP proxy agent 70 serve as a gateway between the TMN managers 40 and 60 and the ATM exchanger 30.

FIG. 5 is a format diagram of an ATM management interface message, and illustrates an embodiment of a message format exchanged between the ATM switcher 30 and the AMI server 51 in the network management structure according to the present invention.

As shown in FIG. 5, the message of the present embodiment includes 1 byte indicating an AMI version and data of a predetermined length indicating an AMI protocol data unit (PDU). At this time, the AMI version byte is displayed to indicate the version of the AMI message.

Meanwhile, the AMI protocol data unit (PDU) includes man machine communication (MMC) type identification information, request ID information, error status information, connection information between messages, order information, and message data. It consists of.

At this time, the MMC type identification information is 1 byte of data indicating the number of the existing MMC message, the IMD / OMD number is included.

The request ID information of one byte is an identification number (ID) for each response when a command is sent to the ATM switch 30 several times. In the user block of the ATM switch 30, the value is given. Make sure to upload it as is without changing it.

Error status information of 1 byte is to indicate whether the result of executing the command is true or false.

The connection information of one byte between messages is used to send using two or more messages when the message is not displayed in the message data interval.

The order information of 1 byte is meaningful only when the inter-message connection information is a value indicating that the message is connected, and the sequence number of the connected message is included.

The message data section of the predetermined length (for example, 400 bytes) contains management information actually transmitted by the user block of the ATM switcher 30.

As described above, since the present invention can accommodate both CMIP and SNMP, which are different network management protocols, it is possible to manage ATM exchanges from different network management systems.

Claims (1)

Send and receive network management information through a graphical user interface (GUI) application program through the F interface, and send and receive network management messages according to a predetermined standard management interface protocol (CMIP) through the Q3 interface. 1 communication network manager; A CMIP proxy agent connected to the first communication management network manager through the Q3 interface and exchanging predetermined ATM management interface (AMI) messages through a Component Object Model (COM) interface; A second communication management network manager that exchanges predetermined network management information with a predetermined graphical user interface (GUI) application program through an F interface, and also exchanges network management messages according to SNMP through a simple network management protocol (SNMP) interface; An SNMP proxy agent connected to the second communication management network manager through the SNMP interface and exchanging predetermined ATM management interface (AMI) messages through an element object model (COM) interface; And The CMIP proxy agent, the SNMP proxy agent, and the graphical user interface application program are accessed through an Open Data Base Connectivity (ODBC) interface with a database having predetermined network management information, and through the element object model (COM) interface. A protocol-independent, asynchronous delivery mode switch management system comprising: an AMI server configured to access and exchange ATM exchange management messages and form a local interface with a predetermined managed ATM switch.