KR20000007885A - Server integration service device and method in asynchronous transmission network - Google Patents

Abstract

PURPOSE: A server combination service device and method in an asynchronous transmission network is provided to reduce the number of systems according to servers. CONSTITUTION: The method for providing the combination service of the asynchronous transmission network comprises the steps of: receiving a message through the combined connect with many clients; analyzing the connect receiving a message when receiving the message; transferring the message to a server module that is registered in advance among many server modules according to the analyzing result; and transferring the header of the received message to the corresponding server module by discriminating when receiving the message in the state of sharing many server modules through one connect.

Description

Server Integration Services Apparatus and Method in Asynchronous Transport Networks

The present invention relates to an apparatus and method for configuring a server through an asynchronous transmission network, and more particularly, to an apparatus and method for integrating the services of each server by constructing a plurality of servers into one system.

In general, a network is largely composed of a server providing a service such as various protocols and a client using the same. The server operates in one system for each service provided. Meanwhile, the servers are interconnected to use each other's services, and clients have a full-mesh structure in which each server establishes a connection to receive a desired service from the servers. .

An example of the full-mesh structure is shown in FIG. 1, and as shown in FIG. 1, each of the servers 110, 120, and 130 is interconnected, and a plurality of clients 140_a, 140_b, and 140_c are described above. It can be seen that it has a structure connected to the servers 110, 120 and 130, respectively.

As described above, conventionally, having one server for each system means that as many systems as the number of servers are required, which causes a problem of unnecessary expense.

An example of a case where servers are combined into one system to solve this problem is illustrated in FIG. 2. Referring to FIG. 2, each system 210, 220, and 230 includes a set of servers 212, 222, and 232 and a signaling unit 214, 224, and 234 that provide one service, and the set of servers 212. , 222 and 232 have connections that combine a number of clients 1 to 3, respectively. In this case, as shown in FIG. 2, the server may be classified into an address resolution protocol (ARP) server 212, a multicasting (MCT) server 222, and a router 232.

However, as shown in FIG. 2, it can be seen that the number of connections with the client is the same. The reason is that since one server serves one client, as many servers exist as the number of clients, and as many asynchronous transport network (ATM) connections are required as a pair of servers and clients. That is, if one server manages multiple ATM connections, if no data is received on any connection, the software code no longer proceeds and stops at the "read" of the pending connection, leaving data on the remaining connections. A problem arises that the reception becomes impossible.

Accordingly, an object of the present invention is to provide an apparatus and method for integrating a service that solves a problem that occurs when at least one protocol server operates in a system based on an asynchronous transmission network.

Another object of the present invention is to provide an apparatus and method in which one server serves a plurality of clients.

Still another object of the present invention is to provide an integrated service by integrating a plurality of servers into one system.

Another object of the present invention is to provide an apparatus and method for integrating a service for reducing the number of asynchronous transmission network connections connecting a server and a client.

According to a first aspect of the present invention, there is provided a system for providing an integrated service of an asynchronous transmission network, comprising: a plurality of servers each providing a unique service, a shared memory shared between the servers; A server integrated service apparatus of an asynchronous transmission network including a distribution unit for distributing messages authorized from a plurality of clients to a corresponding one of the plurality of servers is implemented.

In addition, the present invention according to the second aspect for achieving the above object is a method for providing an integrated service of an asynchronous transport network, receiving a message through a connection coupled with a plurality of clients, and when receiving the message Analyzing the connection in which the message is received; transmitting the message to a server module registered in advance among a plurality of server modules according to the analysis result; and a plurality of server modules are shared through one connection. When the message is received in the state of determining the header of the received message is determined and delivered to the server module, and in response to the message and the message received from the server and delivered to the client through the analyzed connection Implemented server integration service method of asynchronous transmission network.

1 is a diagram illustrating a configuration for a server service through a conventional asynchronous transmission network.

2 is a diagram showing the configuration of a system incorporating each server;

3 is a diagram illustrating a configuration for a server integration service through an asynchronous transmission network according to an embodiment of the present invention.

4 is a diagram illustrating a configuration of an integrated service system according to an embodiment of the present invention.

5 is a diagram illustrating a control flow for providing an integrated service according to an embodiment of the present invention.

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

According to an embodiment of the present invention, the structure of an asynchronous transmission network in which a plurality of servers are integrated into one system is illustrated in FIG. 3. Looking at the structure of the asynchronous transmission network according to the present invention through FIG. 3, it can be seen that the connection to the outside of the system only needs to be connected to the actual client equipment and not to the module inside the other system.

An example of a system in which the plurality of servers 410, 420, and 430 are integrated is shown in FIG. 4. The integrated system shown in FIG. 4 is coupled to each client (Client A, Client B, Client C) through three ATM connections, and the message is distributed to each of the servers 410, 420, and 430 in the integrated system. A memory table 450 shared between the distribution unit 440 and each of the servers 410, 420, and 430, and server modules 410, 420, and 430 that perform functions, respectively.

In addition, the control flow of the distribution unit 440 according to an embodiment of the present invention is as shown in FIG. 5, and the control flow shown in FIG. 5 is a control process performed by one-to-one connection between a server and a client.

The operation according to the present invention will be described in detail with reference to the above configuration. First, in the following description, an integrated system consisting of three clients coupled to each other and providing three types of services will be described as an example.

The distribution unit 440 manages an ATM connection with external clients Client A, Client B, and Client C in steps 510 to 512, and detects a received message.

In operation 510, if the reception of a message is received from any of a plurality of clients, the distribution unit 440 proceeds to operation 514. In step 440, the distribution unit 440 analyzes the connection in which the message is received and analyzes the client corresponding to the originator of the message. The client's analysis uses a Unix selection function (select ()) that tells which connection the message was entered. Using the above Unix function can prevent the entire program from blocking for receiving a message in one connection configuration as described above. Therefore, when a message is received from the outside of the system (client), the select () function informs which connection the message was received on, so that the distribution unit 440 transmits the message to the pre-registered server module.

A series of processes for delivering the received message to the corresponding server module will be described in detail through steps 516 to 526 of FIG. 5.

The distribution unit 440 analyzes the type of the received message in step 516. If the received message is determined to be general data by the analysis, the flow proceeds to step 520. The message may be classified into general data, special data, and other data. The present invention does not specifically describe other types of data processing (step 518 of FIG. 5) as general data is applied.

In operation 520, the distribution unit 440 determines whether the received message is Internet Protocol (IP) data. If it is determined in step 520 that the data is IP data, the distribution unit 440 performs step 524, otherwise, step 522 is performed. In step 524, a mode for processing IP data is performed. In step 522, a mode for address resolution protocol (ARP) processing is performed. Step 522 is a step of converting an address applied in response to a desired service from the client to an address that can be used in the ATM network. In step 522, the address is translated to allow the client to connect to the desired server.

If ARP or IP processing is performed in step 524 or step 522, the distribution unit 440 proceeds to step 526 and distributes the received message to the corresponding server.

On the other hand, when receiving a message from the server in response to the message in step 512, the distribution unit 440 proceeds to step 528. In step 528, the distribution unit 440 transmits the response message to the corresponding client through the connection analyzed in step 514.

Although not shown in the control flow of FIG. 5, a procedure of processing a received message when one client is connected to a plurality of servers is as follows.

Upon receiving the message, the distribution unit 440 determines the connection in which the received message is received, and determines whether a client corresponding to the determined connection is connected to a plurality of servers. If it is determined that the plurality of servers are connected by the determination, the header of the received message is determined. That is, by analyzing the address of the receiver included in the header of the received message, it is possible to determine the server to which the received message is delivered from among the combined servers. When the server is determined to receive the message by the header, the received message is delivered to the server. Meanwhile, the operation performed in response to the received message is the same as the procedure according to the one-to-one connection, and thus will not be described in detail again.

In addition, data transmission between the servers 410, 420, and 430 may be performed through a table provided in the shared memory 450. For example, when the server A 410 intends to transfer data to the router 420, the server A 410 writes data to be transferred to the shared memory 450, and the router 420 accesses the shared memory 450 and reads the recorded data by interrupt. By going around, you can exchange data with each other without establishing a separate connection.

As described above, the present invention can obtain the following effects by integrating services supported by multiple servers.

First of all, by integrating a system, which is conventionally required as many as the number of server modules, into a single system, it is possible to simplify the configuration and provide the same service.

Second, the structure of the conventional full-mesh connection between the client and the plurality of server modules is simplified, which can significantly reduce the number of asynchronous transmission connections required for the entire network.

Thirdly, a server operating in an asynchronous transport network requires an Internet Protocol (IP) routing function, in which a router that performs the above functions also functions as one server module and integrates the other protocol functions into a system as a server module. By doing so, the network construction cost can be greatly reduced.

Claims (2)

In the system providing integrated service of asynchronous transmission network, Multiple servers, each providing its own services, Shared memory shared between the servers; Server integrated service apparatus in an asynchronous transmission network, characterized in that the distribution unit for distributing a message authorized from a plurality of clients to a corresponding server among the plurality of servers. In the method for providing an integrated service of an asynchronous transmission network, Receiving a message through a connection combined with a plurality of clients, Receiving the message, analyzing the connection from which the message was received; Transmitting the message to a server module registered in advance among a plurality of server modules according to the analysis result; When receiving a message in a state in which a plurality of server modules are shared through one connection, the process of determining the header of the received message and forwarding to the server module, And transmitting a message received from the server in response to the message to the corresponding client through the analyzed connection.