KR100540892B1 - Method and apparatus for connecting between frame relay network and atm network in distributed environment - Google Patents

Abstract

The present invention is connected between a frame relay network connected to an ATM network and a plurality of preset connection establishment systems in a distributed environment, wherein the frame relay network and the ATM network are connected to each other according to a request of a specific connection establishment system among the plurality of connection establishment systems. A gateway system for controlling a connection, wherein the gateway system receives a connection establishment command provided from the specific connection establishment system and information on specific both ends, and transmits the information to a frame relay exchange configured with an interworking point in the frame relay network. It provides the detailed setting information, and receives the result corresponding to the setting from the frame relay switch having the interlocking point is passed to the specific connection setting system.

Description

METHOD AND APPARATUS FOR CONNECTING BETWEEN FRAME RELAY NETWORK AND ATM NETWORK IN DISTRIBUTED ENVIRONMENT}

1 is a block diagram showing an embodiment of a connection device between a frame relay network and an ATM network in a distributed environment according to the present invention;

FIG. 2 is a block diagram illustrating FIG. 1 in detail;

Figure 3 is a flow chart illustrating an embodiment of a method of connecting a frame relay network and an ATM network in a distributed environment according to the present invention.

<Description of the symbols for the main parts of the drawings>

101, 201: Connection establishment system 102, 202: CORBA IDL

103, 203: Gateway system
104, 212: frame relay network 105, 213: ATM network

204 CORBA Adapter Block 205 Frame Relay-ATM Settings Server
206: Frame Relay-ATM Settings Client

207: exchange adapter 208: parameter buffering database

209: database 210: SQL

211: API

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The present invention relates to a connection method and apparatus between a frame relay network and an Asynchronous Transfer Mode network in a distributed environment. In particular, the connection establishment system and CORBA IDL (Common Object Request Broker Architecture Interface Definition Language) The present invention relates to a method and apparatus for connecting a frame relay network and an ATM network connected by a gateway system.

Korean Patent Application No. 96-81160 (Invention Name: Frame Relay Matching Method of ATM Switcher) is used to connect an ATM network and a frame relay network by connecting multiple DS1E-class frame relay networks or terminals in a small capacity ATM switch. A description is given of the configured frame relay matching method. The description is briefly described as follows.

The matching method of the present invention includes a frame relay receiving step of detecting a frame by analyzing a frame of a frame relay received through the E1 physical layer and discarding a frame in which the error occurs, and extracting only valid data from the frame of the received frame relay. Forming a service data unit (SDU) of a service specific convergence unit (SSCS) layer, analyzing and mapping the service data unit to a protocol data unit (PDU) of an AAL5 layer; A cell division step of dividing the payload of bytes, attaching a 5 byte header to the divided cell and outputting the cell through the cell bus, and analyzing the header of the ATM cell received through the cell bus to check for errors Recombining a valid ATM cell to form a protocol data unit; and Mapping the frame relay service to a service data unit, analyzing the service data unit to form a frame relay frame, and transmitting the frame relay frame through an E1 physical link in sequence to perform ATM Connect to the exchange.

In addition, the Republic of Korea Patent Application No. 97-69525 (name of the invention: AMT switch matching device for interworking frame relay network) to solve the inconvenience of matching with the ATM switch by converting the frame unit data of the frame relay to ATM cells Asynchronous transmission mode switch matching device for frame relay network interworking is described. The technical contents are briefly described as follows.

The switch matching device of the present invention is connected to the frame relay matching device connected to the frame relay network by DS1 and E1 relay lines, and connected to the ATM switch via a 237 Mbps high-speed link to transmit user cells and IPC (Inter-Process Communication) cells, Multiplexing for 16 Frame Relay Matching Units, Registering and Deleting Connection Points from Call Processors in ATM Switching, Usage Parameter Control (UPC) for Input User Cells, Virtual Path Identifier / Virtual Channel Identifier (VPI / VCI) Conversion, ATM It is configured to perform functions such as cell demultiplexing, HEC (Header Error Correction) generation, and state management of the frame relay matching device.

However, the above-described conventional technology only performs a scheme for interworking with a frame relay service in an ATM switch, and does not provide a method of connecting a frame relay network and an ATM network in a distributed environment.

Accordingly, the present invention has been made to solve the above-described problems of the prior art, by allowing the gateway system to easily connect the frame relay network and the ATM network in a distributed environment, thereby extending the range of connection functions in a frame relay in a distributed environment It is an object of the present invention to provide a method and apparatus for connecting a network to an ATM network.

The present invention for achieving the above object is connected between a frame relay network connected to an ATM network and a plurality of preset connection establishment system in a distributed environment, the frame according to the requirements of a specific connection establishment system of the plurality of connection establishment system A gateway system for controlling a connection between a relay network and the ATM network, wherein the gateway system receives a connection establishment command provided from the specific connection establishment system and information about specific endpoints, and indicates that an interworking point in the frame relay network is connected. Detailed setting information is provided to the configured frame relay exchange, and the result corresponding to the setting is received from the frame relay exchange having the interlocking point and is passed to the specific connection setting system.

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Hereinafter, a preferred embodiment of a method and apparatus for connecting a frame relay network and an ATM network in a distributed environment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an embodiment of a connection device between a frame relay network and an ATM network in a distributed environment according to the present invention, and is connected between a frame relay network 104 and a connection establishment system 101 connected to an ATM network 105. The gateway system 103 is configured to control the connection between the frame relay network 104 and the ATM network 105 in accordance with the request of the connection establishment system 101. The gateway system 103 is connected to the connection establishment system 101 through the CORBA IDL 102.
In the same figure, the connection establishment system 101 is connected to the gateway system 103 via CORBA IDL 102, requests the gateway system 103 to establish a connection, and requests the connection establishment from the gateway system 103. Receive the corresponding result.
The gateway system 103 requests in one way a connection establishment request between the frame relay network 104 and the ATM network 105. At this time, the gateway system 103 continuously receives the connection request from another connection establishment system while making a specific connection establishment in accordance with the request of the specific connection establishment system. For example, the gateway system 103 accepts a request from the connection establishment system 101, provides detailed setting information to the frame relay exchange in which the interworking point A in the frame relay network 104 is configured, and sets the setting. The result corresponding to the result is received from the frame relay switch in which the interlocking point A is configured, and the result is passed to the connection setting system 101. The frame relay network 104 is composed of a plurality of frame relay exchanges, and the ATM network 105 is composed of a plurality of ATM switches. The CORBA IDL 102 is a language defining an interface provided for object invocation in the CORBA environment. As a result, the connection establishment system 101 and the gateway system 103 perform a network management function and constitute a network management system.

FIG. 2 is a block diagram illustrating FIG. 1 in detail. The connection establishment system 101, the CORBA IDL 102, the gateway system 103, the frame relay network 104, and the ATM network 105 of FIG. 1 are illustrated in FIG. 2. Correspond to the connection establishment system 201, CORBA IDL 202, gateway system 203, frame relay network 212, and ATM network 213, respectively.
In the figure, the CORBA adapter block 204 in the gateway system 203 receives the both ends of information required for connection establishment from the connection establishment system 201 in the form of a CORBA IDL 202 and the frame relay-ATM setting server 205. To pass.
The frame relay-ATM setting server 205 stores the both ends information necessary for connection establishment received from the CORBA adapter block 204 in the parameter buffering database 208, and then stores the shape information related to both ends information necessary for establishing the connection. Extracted from database 209 by Structure Query Language (SQL) 210 and passed to exchange adapter 207.

The exchange adapter 207 transmits a connection establishment command to the frame relay network 212 through an API (Application Programming Interface) 211 provided by a specific frame relay exchange constituting the frame relay network 212, and the frame relay network It receives the connection establishment result from 212 and sends it to the frame relay-ATM setting client 206.
The frame relay-ATM setting client 206 communicates the connection establishment result to the connection establishment system 201 through the CORBA adapter block 204 and updates the contents of the database 209 via SQL.

Figure 3 is a flow chart illustrating a step-by-step embodiment of a connection method between the frame relay network 212 and the ATM network 213 in a distributed environment according to the present invention, first, the CORBA adapter block 204 is a gateway system 203 After the operation (S1), the connection establishment command is received from the connection establishment system 201 via the CORBA IDL (202) with respect to the specific both ends (S2).
CORBA adapter block 204 retrieves from the database 209 the exchange providing the Frame Relay-ATM port (S3). As a result of the exchange search, if the search fails, the frame relay-ATM setting client 206 is notified of the impossibility of setting and returns to step S2 (S14). On the other hand, if the search is successful, the search information of the exchange exchanged is stored in the parameter buffering database 208 (S4), and shape information related to both ends of information necessary for connection establishment is extracted from the database 209 (S5).

It is checked whether the corresponding exchange currently retrieved through the exchange adapter 207 is in the provisioning mode (S6). As a result of the check, in the provisioning mode, the terminal waits until the provisioning mode is finished and transmits the related parameters to the exchange adapter 207 (S7). The exchange adapter 207 sets up a virtual framer for a virtual connection between the Frame Relay Network-to-Network Interface (FrNNI) and the Frame Relay-ATM port (S8), and the Frame Relay-ATM and ATMIF (Asynchronous). After setting each address as a partner next point address for interconnection between Transfer Mode Interfaces (S9), the DLCI (Data Link Connection Identifier) number of the frame relay is set to the Virtual Path Identifier (VPI) / VCI (Virtual Channel) of the ATM. Identifier) and mapping (S10). The DLCI is an identifier used to distinguish a connection in a frame relay.
After traffic parameter mapping (S11) between the frame relay and the ATM, it is determined whether the provisioning mode is set (S12). As a result of the determination of step S12, when the provisioning mode is set, the frame relay-ATM setting client 206 notifies the success of provisioning mode setting and returns to the step S2 (S13). On the other hand, when the provisioning mode is not set as a result of the determination of step S12, the frame relay-ATM setting client 206 is notified of the impossible provisioning mode setting and returns to the step S2 (S14).

As described above, the method for establishing a connection between the frame relay network and the ATM network according to the present invention can solve the burden of having to know the detailed items related to the connection establishment and the connection setting for the connection through the gateway system. In a distributed environment, the connection establishment system can more easily issue the connection establishment command between the frame relay network and the ATM network, making it easier to establish the connection between the two networks.

In the above description, a technical idea of a method for establishing a connection between a frame relay network and an ATM network of the present invention has been described with the accompanying drawings, but this is by way of example and not by way of limitation.

In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (6)

A method of controlling a connection between a frame relay network and an ATM network (Asynchronous Transfer Mode network) in a gateway system connected to multiple connection establishment systems in a distributed environment, A first step of receiving information on a specific both ends with a connection establishment command from a particular connection establishment system of the plurality of connection establishment systems; Searching for an exchange providing a frame relay-ATM port in the frame relay network; A third step of notifying the preset frame relay-ATM setting client of the impossibility of setting when the exchange switch fails; A fourth step of, if the exchange search is successful, storing information corresponding to the exchange search and extracting shape information corresponding to the specific disadvantages; A fifth step of checking whether the searched exchange is in a provisioning mode; If the searched exchange is in the provisioning mode, after the provisioning mode is finished, sending a related parameter to a preset exchange adapter; The exchange adapter sets up a virtual framer between the Frame Relay Network-to-Network Interface (FrNNI) and the Frame Relay-ATM port, and the address of the Frame Relay-ATM and the Asynchronous Transfer Mode Interface (ATMIF) A seventh step of mapping the data link connection identifier (DLCI) number of the frame relay and the virtual path identifier (VPI) / virtual channel identifier (VCI) of the ATM after setting the point address; An eighth step of mapping a traffic parameter to the exchange adapter; A ninth step of informing the frame relay-ATM setting client whether a provisioning mode setting is successful; Connection method between a frame relay network and an ATM network in a distributed environment including a. The method of claim 1, The first step is a frame relay network in a distributed environment, characterized in that the information about the two endpoints together with the connection establishment command provided from the connection establishment system via CORBA IDL (Common Object Request Broker Architecture Interface Definition Language). Of connection between ATM and ATM network. In a distributed environment, a frame relay network connected to an ATM network and a plurality of preset connection establishment systems are connected to control the connection between the frame relay network and the ATM network according to a request of a specific connection establishment system among the plurality of connection establishment systems. As a gateway system, The gateway system receives the connection establishment command provided from the specific connection establishment system and information on specific both ends, and provides detailed setting information to a frame relay exchange configured with an interworking point in the frame relay network. And receiving a result corresponding to the setting from the frame relay switch configured with the interlocking point and passing the result to the specific connection setting system. The method of claim 3, wherein And the plurality of connection establishment systems and the gateway system are connected through a CORBA IDL (Common Object Request Broker Architecture Interface Definition Language). The method of claim 3, wherein The gateway system, An adapter block for receiving both ends of information necessary for establishing a connection from the specific connection setting system and transferring it to the next step; After storing both ends information required for connection establishment transmitted from the adapter block in a preset parameter buffering database, shape information related to both ends necessary for connection establishment is extracted from a database set in SQL (Structure Query Language), A frame relay-ATM setting server that delivers to the next stage, The connection establishment command transmitted from the frame relay-ATM setting server is transmitted to the frame relay network through an application programming interface (API) provided by a specific frame relay exchange constituting the frame relay network, and connected from the frame relay network. An exchange adapter that receives the result of the setup, The frame relay-ATM setting client which receives the connection establishment result from the exchange adapter and delivers it to the specific connection establishment system through the adapter block and updates the contents of the database through SQL. Connection device between the frame relay network and the ATM network in a distributed environment comprising a. The method of claim 5, The adapter block receives the both ends of information required for connection establishment from the specific connection establishment system in the form of CORBA IDL (Common Object Request Broker Architecture Interface Definition Language) and delivers it to the next stage. Connection device between ATM networks.

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