KR19990005391A - Information Extraction Method for Total Path of PVC and SVC in ATM, Frame Relay, and PDH Networks - Google Patents

Abstract

In the conventional NMS system, a method of expressing information on a specific PVC or SVC uses a method of expressing each individual information. In other words, the NMS obtains the information about the connection in the network element and the operator guesses the route. Each network element has connection information for the module that manages the permanent or switched virtual call, and the period module contains the connection information for the period-related module of the next node. In the conventional technology, there is no technology for integrating and expressing various kinds of information.

The present invention is a method of completing the entire connection path by continuously reading the connection information from the source to the destination in the PVCM and SVCM constituting each network element.

In the method for completing the entire connection path according to the present invention, the entire path from the transmitting side to the receiving side is in the form of a graphical user interface, and the operator can check at a glance, and there is a tool for checking the entire path. It is possible to find out which node is failing, enable the operator to view the established path for more efficient switching, and obtain statistics on the corresponding connection from each node where the connection is established.

Description

Information Extraction Method for Full Path of PVC and SVC in ATM, Frame Relay, and PDH Networks

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network management system (hereinafter referred to as NMS), in particular a particular subscriber in an asynchronous transfer mode network, a frame relay network and a pleiochronous digital hierarchy network. By using the extracted information and the method of extracting the full path from the network element to the permanent virtual connection (hereinafter referred to as PVC) and Switched Virtual Connection (hereinafter referred to as SVC) The present invention relates to a graphical user interface (hereinafter referred to as GUI).

As a method of transmitting user information of the Broadband Integrated Service Digital Network (hereinafter referred to as B-ISDN), the International Telecommunication Union (hereinafter referred to as ITU) recommends an ATM transmission method. The ATM transmission method uses a statistical multiplexing method in which user information is composed of cells having a fixed length of 53 bytes, and dynamically allocates bandwidth only to a user who has data to be transmitted. In addition, ATM networks use the Connection Oriented protocol used in conventional X.25 packet-switched networks. The connection-oriented protocol refers to a method of transmitting information after a virtual channel is established between a transmitter and a receiver, rather than establishing a physical circuit between the transmitter and the receiver. Such virtual channels are divided into PVC and SVC for efficient use of the exchange.

PVC has the same meaning as a dedicated line of a telephone line. When a large amount of information exchange occurs between the sender and the receiver, a fixed allocation and use without the need to set a channel at the time of transmission of the information can bring high efficiency.

SVC requires the process of establishing a channel whenever it needs to exchange information between a sender and a receiver.

In the above PVC, the NMS system is involved in call setup, but SVC is known that PVC and SVC can be automatically set up by signaling system between network and subscriber without the NMS system involved in call setup. This is another difference.

1 is a block diagram of a network for accommodating subscribers requesting various services. The network has a subscriber interface for accommodating ATM, frame relay, and PDH subscriber in a network end device, and includes a subscriber terminal device connected to the interface device and an ATM backbone network for transmitting information of each subscriber.

In the conventional NMS system, a method of expressing information on a specific PVC or SVC uses a method of expressing each individual information.

In other words, the NMS obtains the information about the connection of the network element and the operator guesses the route. Each network element has connection information to a module that manages permanent virtual calls or switched virtual calls, and the period module contains connection information for the period related modules of the next node.

In this technique as in the prior art, there is no technique for integrating and expressing various kinds of information.

The present invention is to solve the above problems, regardless of the type of network, such as ATM network, frame relay network, PDH network, the entire path from the subscriber's transmitting side to the receiving side from each network element related to PVC and SVC It aims to get individual information and make it visible to the operator at a glance.

1 is a network configuration according to the present invention

Figure 2 is a block diagram showing the components of the path query according to the present invention

3 is a configuration of a user graphical interface of an NMS system showing a full path according to the present invention.

* Explanation of symbols for the main parts of the drawings

101. Subscriber device 102. Interface card

103. ATM backbone network 201. Subscriber device

202.Network Element 203.PVC

204.SVCM 205.BBCP

206. SNMP Delegate 207. Network Management System

In order to achieve the above object, the present invention continuously reads the connection information from the source to the destination in the PVCM (PVC Manager) and SVCM (SVC Manager) constituting each network element, This is done by completing the connection path.

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

2 shows the components of a network element for obtaining the full connection information.

Each network element must connect PVC or SVC from one subscriber to another for route query, so there must be interface card according to interface type on the subscriber side. In addition, there should be an ATM network which is a backbone network that establishes a connection inside the network. In an actual implementation, a PVC manager (PVC Manager: PVCM) for establishing a connection to an interface card having an interface card and an ATM card for a backbone network is installed in one network element. Or SVC Manager (hereinafter referred to as SVCM) module, and each manager requests full connection establishment through BBCP (BackBone Connection Processing module).

The BBCP is a software module responsible for call setup in the network. The BBCP receives call setup requests from the PVCM and sets up call setup in the network to a destination using proprietary protocols.

Receiving a connection establishment request from the virtual channel managers of PVCM and SVCM, the BBCP makes a connection establishment request to a BBCP located at another network element. The above process continues until the destination network element is reached. The connection information to the destination network element has the connection information to the BBCP or another BBCP, or the destination BBCP stores information to the PVCM or SVCM of the interface card connected to the subscriber. In the NMS system, information about the entire path from the network element can be obtained from a simple network management protocol (hereinafter referred to as SNMP) agent from each module. At this time, the information obtained from each network element can be used to determine whether the network element is an end point or an intermediate point of the network. Information obtained using the above process is shown to the operator of the NMS side in the form of a GUI. The ability to see all of the connection information at a glance makes it easier to identify the feedback function or statistical information about the subscriber.

Figure 3 shows an output screen in the form of a GUI using the information obtained by using the information extraction method for the PVC and SVC path of the present invention.

The present invention by the above components can be confirmed at a glance that the entire path from the transmitting side to the receiving side is operated in the form of a graphical user interface. Tools to check the full path make it easy to find out which node is failing when establishing a connection, allow operators to view the established path for more efficient switching, and to make the corresponding connection on each node where the connection is established. You can conveniently get statistics on.

Claims (2)

A network system comprising a plurality of communication systems having a PVCM module, an SVCM module, which establishes a connection to an interface card upon receiving a connection establishment request from a subscriber, and a BBCP module that performs a whole connection establishment, wherein each node's module transmits connection information. A method of extracting information about the entire path of PVC and SVC in ATM, frame relay, and PDH networks, which is performed by reading the data from the destination to the destination continuously. The method of extracting information on the entire paths of PVC and SVC in ATM, frame relay, and PDH networks, according to claim 1, wherein the connection information obtained by the above method is represented in GUI form.