KR100281747B1 - Subroutine status information management method of ATM switch by TMS - Google Patents

Abstract

The present invention relates to a method for managing subroutine state information of an ATM switch by a communication management network (TMN), wherein the state of the subroute is classified into a management state, an operating state, and a reset state, and then an agent in the manager system of the communication management network. Call connection by signaling in the communication management network (TMN) by changing the state of the subroute included in the subroutine or by automatically changing the state of the subroute in the ATM switch and reporting the changed state to the manager through an agent. It is characterized by making management function efficient.

Description

Subroutine status information management method of ATM switch by TMS

The present invention relates to a method for managing subroutine state information of an ATM switch by a communication management network (TMN). In particular, the present invention relates to a communication management network for various states of an ATM switch subroute required to perform a call by a signal of an ATM switch. The present invention relates to a method for managing subroutine state information of an ATM switcher by a TMN, which is represented by a management object defined by a TMN (Telecommunications Management Network) and then allows the TMN to accept the state.

In general, the subroute defined at the ATM exchanger may change its status from time to time due to various factors during operation, and the operator should be able to control this status information. However, this control itself can be managed by the local operator existing in the ATM switch. Since the control by the local operator is performed only for a single ATM switch node, the management resource is represented as internally defined data and the application program can be managed. To be handled by.

However, conventionally, only management information is presented in international standards for such management resources, and these management information are not defined to accommodate all the states of the subroute managed by the ATM switch. Therefore, it is not properly related to the state of the subroute managed by the ATM switch, and the procedure for managing the state of the subroute in the TMN is not defined.

On the other hand, in the case of constructing and managing several ATM exchangers in one communication management network, all management information can be interpreted in CMIP, a communication protocol between the management subject TMN Manager and the management target TMN Agent. Since it must be represented as a managed object, it is very important to properly associate subroutine state information of the managed ATM exchanger with the managed object defined in the TMN, so that the state of the subroute can be managed accurately.

Accordingly, an object of the present invention is to provide a method of expressing various states of a subroute required to perform a call by a signal of an ATM switch with a management object defined in a communication management network, and then accepting the state in the communication management network. It is done.

In order to achieve the above object, a method of managing subroutine state information of an ATM switch by a communication management network (TMN) provided by the present invention classifies a state of a subroute into a management state, an operating state, and a reset state, and then, a communication management network. In the communication management network (TMN), the manager system of the system changes the state of the subroute included in the agent or the ATM switch changes the state of the subroute and automatically reports the changed state to the manager through the agent. Characterized in that the call connection management function by the signal can be efficiently performed.

1 is a structural diagram showing an interworking relationship between a TMN manager system and an agent system for managing an ATM switch;

2 is a state transition diagram for subroute state control of an ATM switch by a TMN;

3 is a process flowchart showing a state information management procedure between a manager and an agent system of a TMN system according to the present invention;

<Explanation of symbols for main parts of drawing>

110: manager system 111: manager main

112: configuration management 113: protocol stack

120: agent system 121: agent

122: protocol stack 123: MIB

124: CASS

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

FIG. 1 is a structural diagram illustrating an interworking relationship between a TMN manager system and an agent system for managing an ATM switch. Referring to FIG. 1, a manager system 110 and an agent system constituting a communication management network are illustrated. Each 120 is located in a separate workstation, and the manager system 110 includes a manager main 111 that manages the interface with the TMN operator and various management functions of the manager system 110, and An OSI (Open Systems Interconnection) Protocol Stack (113), which is in charge of transmitting information to and from the agent system 120, and a management function that is inherent to a manager, which includes the present invention. Configuration management function 112 is also included.

Meanwhile, the agent system 120 may include a network element agent subsystem (NEAS) 121 for performing a management message from the manager system 110, and the manager system 110. The OSI Protocol Stack 122, which is responsible for transmitting information of the system, the CASS (Connector for Agent and Switch Subsystem) 124, which is connected to the ATM exchanger, and the resources of the ATM exchanger are managed. A Management Information Base (MIB) 123 expressed as an Object.

At this time, the TMN operator's command is transmitted between the manager system 110 and the agent system 120 by the common management information protocol (CMIP) protocol 130 of the application layer, and finally the command is applied to the ATM switch. Communication between the manager system 110 and the agent system 120 is physically performed through a data communication network (DCN) 140.

2 is a state transition diagram for controlling the subroute state of the ATM exchange by the TMN, wherein the subroute state of the ATM exchange is initialized (20), normal operating state (10), local isolation state (30), and self-powered station. It is divided into isolation state 40 and power isolation state 50. The initialization state 20 is an initial management state for the connection when the connection is established between the own station and the power by a signal, and a normal operation state 10 Denotes a state in which a connection (that is, a subroute) established by a signal can perform a normal service. On the other hand, the local isolation state 30 indicates that the connection by the signal has become out of service due to the cause of the local ATM switch (a quarantine request by the operator), and the large country isolation state 50 is the cause of the large ATM switch. (Isolation by the operator) indicates that the connection by the signal has become out of service state. Finally, the self-power isolation state 40 indicates that both the self and the cause of the power have occurred so that the connection by the corresponding signal is out of service. Indicates.

At this time, each state transitions between states by a specific event, and the events causing the state transition are classified into eight types as follows.

1) Service isolation event 201 as required by the country

: An event that occurs to allow a TMN operator to request service isolation as needed, wherein the initialization state 20 is set to the national isolation state 30, the normal operation state 10 to the national isolation state 30, and the power station. Allow isolation state 50 to change to home-to-country isolation state 40.

2) service restart event due to the need of the own country (202)

: An event requiring re-isolation of a subroute that has been quarantined by the need of a TMN operator to restart a service that has occurred. This event changes the national isolation state 30 to a normal operating state 10 or a home-country isolation. State 40 is to be changed to Power Containment State 50.

3) Service Containment Events at the Demand of Powers (203)

: This event occurs when the operator of a large station makes a service isolation request for a subroute connected to the own station from the viewpoint of the own station. This event changes the normal operating state (10) to the large station isolation state (50). Change (30) to home-to-country isolation 40.

4) Service resumption event at the request of the power (204)

: An event that allows a sub-root, which was isolated by the operator of the power, to resume service, which returns the power isolation state 50 to the normal operation 10 state and returns the self-power isolation state 40 to the country. Reduce to isolation 30.

5) Service quarantine events at the request of the country and the country (205)

: An event that occurs when both the local operator and the large operator request service isolation and when there is a physical failure in the connection between the host and the counterpart (subroot) .In this case, the local station operates in the normal operation state (10). -Transition occurs to the state isolation state (40).

6) Service restart event (206)

This event occurs when the cause of the service isolation event due to the request of the host and the power is resolved. In this case, the transition occurs from the self-power isolation state 40 to the normal operation state 10.

7) Service Initialization Request Event (207)

: An event when an initialization request is made by an operator when a connection by a signal is established or during operation.This event initializes a local isolation state 30 to an initialization state 20 or a normal operation state 10. Transition to state.

8) Service Initialization Completion Event (208)

This event is generated when service initialization is completed. This event does not cause a transition.

Meanwhile, Table 3 shows a method of mapping the subroute states shown in FIG. 2 to a management object that can be recognized by the TMN in the TMN agent system to which the present invention is applied. In general, a management object for a subroute representing a signaling connection is defined as sVpTTP in ITU-T Q.824.6. In the sVpTTP management object, four types of attributes representing a state are defined. There is no specific definition of how these attribute values can be appropriately represented by the status values of the subroute used in the ATM exchange.

Therefore, Table 3 defines the relationship between them.

Subroute status maintenanceSignalingRunning (301) BlockedForMaintenance (302) operationalState (303) remoteBlocking (304) Steady state (305) FALSE Unblocked Enable RemoteUnblocked Isolated country (306) By operator FALSE Blocked Enable RemoteUnblocked By disability FALSE Unblocked Disable RemoteUnblocked Power Quarantine (307) FALSE Unblocked Enable RemoteBlocked Home-Country Containment (308) Case 1) FALSE Blocked Enable RemoteBlocked 2) FALSE Unblocked Disable RemoteBlocked Initialization state (309) TRUE Unblocked Enable RemoteUnblocked

Referring to Table 1, the state-related attributes defined in sVpTTP include maintenance signaling processing (301), isolation for maintenance (302), operation state (303), and remote play. There is a remote blocking 304, and using these attribute values, the state of the subroute managed by the ATM switch, that is, the normal state 305, the national isolation state 306, the national isolation state 307, the national station Represent an isolation state 308 and an initialization state 309.

Referring to Table 1 above, the normal state 305 may be expressed by maintaining all attributes having an initial value (maintenanceSignalingRunning = FALSE, blockedForMaintenance = Unblocked, operationalState = Enable, remoteBlocking = RemoteUnblocked), and a local isolation state ( Local Block) 306 may be caused by an operator or by a physical failure of a subroute within an ATM switch. The three classifications are for releasing the cause by cause when the cause of quarantine disappears. The national isolation state 306 is represented using the blockedFor Maintenance 302 and the Operational State 303 attributes. On the other hand, the control by the operator is represented as a blocked for maintenance (302) for representing the management state, the control by the failure is represented using an operational state (303) representing the operational state, The power isolation state 307 is represented by the remoteBlocking 304 attribute representing the power state, and the home-power isolation state 308 is a case where both isolation and power isolation occur, so that the three classifications of the isolation state According to the above, three cases are classified into the case where the national isolation state is caused by the operator and all the country isolation occurs (case 1), and the country isolation state is caused by the failure and all the country isolation occurs (case 2). 1) is expressed using the blockedForMaintenance and remoteBlocking attributes for the management state, and (Case 2) represents the operational state. It expressed using the state for the remote isolated. Finally, the initialization state (Reset) 309 is expressed using the maintenance signal processing (maintenanceSignalingRunning) attribute representing the reset state.

3 is a process flow diagram illustrating a state information management procedure between a manager and an agent system of a TMN system according to the present invention. First, when a manager receives a state change command of an operator (403), an agent system is performed. Inquiry 404 state information of the current subroute from the MIB of the request to the agent (405) to change the state of the current subroute to the state requested by the operator.

Then, the agent that receives the state change request from the manager performs agent internal process processing for the request (406), and if the processing is completed normally, requests the state change command to the exchange (407). If a normal execution result is received from the exchange (408), state-related attributes are changed (409) in the MIB in the Agent. When the agent transmits a success response that is a result message to the manager 410, the manager responds 411 to the success result to the operator and ends the process.

However, if the agent receives a failure result from the exchange requesting a state change command (408), it sends a state change error response to the manager (412) without changing the state related attributes of the agent (412). As a result of the error response, a failure result response is sent to the operator (413) and then terminates.

On the other hand, if the manager receives a state change from the local operator of the ATM switch other than the TMN operator (402), the fact of the change is reflected (409) in the agent's MIB, and then the subsequent steps (410 to 411) are performed. If the manager receives a failure of a link established as a subroute at the ATM switch (401), the status should be set to the self-counter isolation state, and the fact is reflected to the MIB in the agent (409). Thereafter, processes 410 to 411 are performed.

In the case of the present invention as described above has the following effects.

First, in order to solve the disadvantage that the subroutine state of the ATM switch and the management information managed by the TMN cannot be defined in the related art, in order to solve the disadvantage that the subroute control by the TMN is impossible, the subroutine by the TMN is proposed. Route status information can be managed.

Second, it is possible to manage the status control of the subroute that could not be performed by TMN by interworking between the manager and the agent.

Third, there is a method and procedure to reflect the report on the subroutine state change of the ATM switch to the agent and report it to the manager.

Fourthly, in this connection, the TMN operator can manage the status of the subroute from a remote location through the interworking of the manager and the agent, and expand the management scope of the operator even more from an integrated network management point of view.

Claims (6)

And a manager system that performs an interface function with an operator, and an agent system that transmits a control command of an operator transmitted from the manager system to an ATM switch and transmits a signal received from the ATM switch to the manager system. A method for managing a subroute state of an ATM exchange by means of A first step of specifying a state of an ATM switch subroute required to perform a call by an ATM switch by a management object defined by the communication management network; A second process of, when the manager system receives a state control command of the exchange subroute from an operator, transmits the state control command to an agent system to control the state of the ATM switch according to the operator's request; Subrouting of the ATM switch by the communication management network (TMN), characterized in that the agent system is configured to reflect the state of the ATM switch changed in the second process to the agent system reports the result to the manager system How to manage status information. The method of claim 1, wherein the first process is Status of ATM switch subroute An initial state indicating an initial management state for the subroute when the subroute is set between the own station and the large station by a signal, A normal state indicating a state in which the subroute set by the signal can perform a normal service; A national isolation state indicating that the subroute connected to the local exchange has become out of service due to a failure of the local ATM exchange or the request of the operator; A power isolation state indicating that a subroute connected to the power exchange has become out of service due to a failure of the power ATM switch or a request from the operator; Subroutine status information of the ATM switch by the communication management network (TMN), characterized in that the cause of both the own station and the counterpart occurs and the subroutine is separated into a station-counter isolation state indicating that subroutine service is not possible by the corresponding signal. How to manage. The method of claim 1, wherein the first process is The management object defined in the communication management network A maintenance SignalingRunning attribute that represents the reset state as true or false; BlockedForMaintenance attribute representing the state of control management by the operator with or without blocking (Blocked / Unblocked), OperationalState attribute that represents the state of control management by failure by enable / disable; Subroutine state information management of ATM exchanges by the communication management network, characterized in that the relationship between the states of the ATM exchange subroute is defined by the remoteBlocking attribute representing the state of the play with or without remote blocking (RemoteBlocked / RemoteUnblocked). Way. The method of claim 2 or 3, The BlockedForMaintenance property is A method for managing subroutine status information of an ATM exchange by a telecommunications management network, characterized in that a relationship is defined between a local isolation state by an operator and a local isolation state and a large country isolation state by an operator by blocking. The method of claim 2 or 3, The operationalState attribute is A method for managing subroutine status information of an ATM switch by a communication management network, characterized in that it defines a relationship between a local isolation state by an operator and a failure, and a local isolation and power isolation state by a failure due to a disable. The method of claim 2 or 3, The remoteBlocking property is A method for managing subroutine state information of an ATM switch by a communication management network, characterized by specifying the relation between the segregation of a power station and the isolation of the own station / power station by an operator and a failure by Remote Blocking.