KR100250118B1 - Apparatus of alarm gateway and methods of alarm message tramslation between systems of heterogeneous protocol - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an alert gateway device and an alert message conversion method.

2. The technical problem to be solved by the invention

An object of the present invention is to provide an alarm gateway device and an alarm message conversion method between systems of heterogeneous protocols capable of unified network management.

3. Summary of Solution to Invention

The present invention provides a communication apparatus comprising: first trap analyzing means for interpreting the coded simple network management trap as a trap in abstract syntax notation form when a trap is generated; Second trap interpreting means for interpreting a trap message in the form of converted abstract syntax notation; Trap information extracting means for extracting trap information by performing an enterprise user defined trap conversion process or by performing a standard trap conversion process; Alarm generating means for generating a common management information protocol alarm according to the extracted trap information; Protocol stack control means for sending a common management information protocol stack operation command; And alert delivery means for delivering a coded common management information protocol alert.

4. Important uses of the invention

The invention is used in a system of heterogeneous protocols.

Description

Alarm gateway device and alarm message conversion method between systems of different protocols

The present invention relates to an alert message conversion technology between heterogeneous protocol systems for communication and network management, and in particular, a network management system using a simple network management protocol (hereinafter referred to as " SNMP ") and common management information. The present invention relates to an alarm gateway device and an alarm message conversion method between systems of heterogeneous protocols for mutually communicating alarm messages between network management systems using a common management information protocol (hereinafter referred to as "CMIP").

When classified according to a management protocol using conventional network management systems, three types of systems are used, such as a system using SNMP, a system using CMIP, and a system using American Standard Code for Information Interchange (ASCII) string or a proprietary protocol. Can be divided into Telecommunications Management Network, a network management standard proposed by the International Telecommunication Union (Telecommunication) (hereinafter referred to as "ITU-T"), is a system using CMIP as a management protocol. There is currently no interworking between these systems.

In addition, in the conventional system, information cannot be mutually transferred between systems using heterogeneous protocols as management protocols. Therefore, there is a problem in that one-way network management that manages systems using multiple management protocols in one system is impossible, and a new network management system must be constructed when a system using another management protocol is introduced.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, and it is possible to respond quickly and accurately in the event of a failure in a system using SNMP and CMIP as a management protocol, and to use systems using two different management protocols. It is an object of the present invention to provide an alarm gateway device and an alarm message conversion method between systems of heterogeneous protocols that can be managed in a network.

1 is a schematic view showing the configuration of a system to which the present invention is applied.

2 is a block diagram of an embodiment of a gateway device for converting an SNMP trap into a CMIP alert message in accordance with the present invention;

3 is a flow diagram of one embodiment of a method for converting an SNMP trap into a CMIP alert message in accordance with the present invention.

4 is a block diagram of an embodiment of a gateway device for converting a CMIP alert message into an SNMP trap according to the present invention;

5 is a flow diagram of one embodiment of a method for converting a CMIP alert message into an SNMP trap in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

201, 408: SNMP system 202: BER interpreter

203: SNMP Trap Message Interpreter 204: SNMP Trap Information Extractor

205: CMIP Alarm Message Generator 206, 403: XMP / XOM Application Program Interface

207, 402: CMIP protocol 208, 401: CMIP system

The apparatus of the present invention for achieving the above object, in the gateway device for converting a simple network management protocol trap into a common management information protocol alert message, if the simple network management protocol system generates a coded simple network management protocol trap First trap interpreting means for interpreting the coded simple network management trap as a trap in abstract syntax notation form; Second trap interpreting means for interpreting a trap message in the form of abstract syntax notation converted from said first trap converting means; A trap information extraction means for extracting trap information by determining whether the trap of the message interpreted from the second trap analyzing means is a standard trap or an enterprise user defined trap or performing a standard user defined trap conversion process ; Alert generating means for generating a common management information protocol alert in accordance with the trap information extracted from said trap information extracting means; Protocol stack control means for receiving a common management information protocol alert generated from the alert generating means and transmitting a common management information protocol stack manipulation command; And alarm delivery means for delivering the common management information protocol alert coded according to the common management information protocol stack operation command to the common management information protocol system.

In addition, the method of the present invention for achieving the above object, in a method for converting a simple network management protocol trap into a common management information protocol alert message, the simple network management protocol system generates a simple network management protocol trap coded The interpreter of the coded simple network management protocol trap may further comprise a first step of interpreting the coded simple network management trap as a trap in abstract syntax notation form; The simple network management protocol trap message interpreter may comprise a second step of interpreting a trap message in the form of translated abstract syntax notation; The simple network management protocol information extractor may include: a third step of determining whether the trap of the interpreted message is a standard trap or an enterprise user defined trap to perform an enterprise user defined trap conversion process or a standard trap conversion process to extract trap information; Generating a common management information protocol alert according to the extracted trap information; Receiving a generated common management information protocol alert and transmitting a common management information protocol stack operation command; And a sixth step of delivering the common management information protocol alert coded according to the common management information protocol stack operation command to the common management information protocol system.

In addition, the apparatus of the present invention for achieving the above object, in the gateway device for converting a common management information protocol alert message into a simple network management protocol trap, receiving an alert message coded from the common management information protocol system Alert message delivery means for delivering a message; Information extracting means for extracting information from the alert message delivered from said alert message transmitting means; Information analyzing means for analyzing information extracted from said information extracting means; Trap generation means for distinguishing whether the information interpreted from the information interpretation means is an enterprise user defined trap or a standard trap and performing an enterprise user defined trap or a standard trap generation process; Trap creation means for creating the corresponding trap generated from the trap generation means into a simple network management information trap in the form of abstract syntax notation; And trap coding means for coding a simple network management information trap created from said trap creation means and transferring it to a simple network management protocol system.

In addition, the method of the present invention for achieving the above object, in the method for converting a common management information protocol alert message into a simple network management protocol trap, the common management information protocol protocol stack is an alert coded from a common management information protocol system Receiving a message and delivering an alert message; A second step of extracting information from the delivered alert message by the common management information protocol alert message information extractor; A third step of interpreting the extracted information by the common management information protocol alert message interpreter; The common management information protocol alert message generator comprises: a fourth step of determining whether the interpreted information is an enterprise user defined trap or a standard trap and performing an enterprise user defined trap or a standard trap generation process; A simple network management protocol message generator comprising: generating a corresponding generated trap as a simple network management information trap in an abstract syntax notation form; And a coder includes a sixth step of coding the created simple network management information trap and forwarding it to the simple network management protocol system.

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

1 is a schematic configuration diagram showing a system to which the present invention is applied, a CMIP system 101 using a CMIP, a CMIP network 102 transmitting a CMIP, and a gateway device 103 acting as a gateway between an SNMP and a CMIP. , An SNMP network 104 for transmitting SNMP, and an SNMP system 105 using SNMP.

Looking at the process of converting the alarm generated in the SNMP system 105 to a CMIP alarm, the SNMP system 105 generates an SNMP trap protocol data unit (hereinafter referred to as "PDU"). This is received by the gateway device 103 via the SNMP network 104 which transmits the SNMP message.

The types of SNMP messages, received SNMP trap protocol data units (hereinafter referred to as "PDUs") and variable binding are shown in Tables 1, 2 and 3 below, respectively.

version community SNMP PDU

PDU type Enterprise Administrative Agent Address Standard trap Custom traps Time stamp Variable binding

Name 1 Value 1 Name 2 Value 2 . . . . Name n Value n

The above-described SNMP message of Table 1 is a form for exchanging information between a computer, that is, a management station, and a managed element, that is, an agent, and is a form of an SNMP packet defined for transferring various kinds of information. This is commonly called a protocol data unit (PDU), which in SNMP is called a message.

In addition, an SNMP message is composed of a version, a community, and an SNMP PDU. The PDU is information excluding a version and a community from a message. There are five types of SNMP PDUs: GetReqest, GetNextRequest, SetRequest, GetResponse, and Traps.

The SNMP trap PDU is referred to herein as an SNMP trap message or an SNMP alert message.

Mandatory parameters for configuring CMIP alert messages as defined in ITU-T Recommendation X.733 are: Invoke Identifier, Mode, Managed-Object Class, Managed-Object Instance. , Event Type and Event Information. Include this information to generate SNMP traps, interpret SNMP traps from SNMP-CMIP gateway devices, generate corresponding CMIP alert messages, and send them to systems using CMIP to convert SNMP traps to CMIP alerts. can do.

In Table 2, variable binding refers to an arbitrary name and value of an object specified by a user in an SNMP trap PDU.

Deliver alerts required by CMIP using these variable binding fields, generic-trap fields that define common traps, and specific-trap fields that define the types of SNMP traps that you further define. In addition, by generating a CMIP alert using the forwarded alert, an alert generated by SNMP can be converted into a CMIP alert.

The variable binding of Table 3 above allows the user to additionally transmit necessary information, and transmits an identifier and a value of a variable (in SNMP, this is called an object) containing the information to be transmitted. The number of information that can be sent in variable bindings is variable.

Here, SNMP is for managing elements constituting a network on a TCP / IP network or a TCP / IP network, and CMIP is for managing elements constituting a CMIP network or an open system interconnect (OSI) network. (Telecommunications Management Network) has been adopted and used as a network management protocol of the methodology. In addition, communication management network uses CMIP as a lower network management protocol as a network management methodology defined by ITU-T.

In addition, the alert message here refers to all kinds of messages that occur in case of failure or failure in SNMP and CMIP. In the case of SNMP, alarm messages that occur when a failure or failure occurs are called traps. SNMP traps are classified into standard traps and enterprise specific traps. There are six standard traps defined by the standard. Enterprise user-defined traps are blank parts of the standard that are newly defined to indicate situations that are not represented by the six standard traps.

2 is a diagram illustrating an embodiment of a gateway device for converting an SNMP trap into a CMIP alert message according to the present invention.

As shown in the figure, the gateway device for converting an SNMP trap into a CMIP alert message includes a Basic Encoding Rule (hereinafter referred to as "BER") interpreter 202, an SNMP trap message interpreter 203, SNMP trap information extractor 204, CMIP alert message generator 205, X open Management Protocol / X open Object Management (XMP / XOM) Application Program Interface (206) ) And CMIP protocol 207.

First, the SNMP system 201 generates a BER coded SNMP trap, and the BER interpreter 202 then converts the BER coded SNMP trap into an abstract syntax notation. 1 (Abstract Syntax Not. Interpreted ASN. One type of trap is interpreted and output to the SNMP trap information extractor 204, and the SNMP trap information extractor 204 distinguishes whether the trap interpreted from the SNMP trap message interpreter 203 is an enterprise user defined or standard trap, respectively. The trap is converted to extract the corresponding information and then output to the CMIP alert message generator 205.

The CMIP alert message generator 205 generates CMIP alerts according to the information extracted from the SNMP trap information extractor 204 and outputs them to the X open management protocol / X open management application program interface 206, and the X open management protocol / X. The open object management application program interface 206 receives the CMIP alert generated from the CMIP alert message generator 205 and outputs a CMIP protocol stack manipulation command to the CMIP protocol 207, and the CMIP protocol 207 manipulates the CMIP protocol stack. According to the command, the coded CMIP alert is forwarded to the CMIP system 209.

3 is a flow diagram of one embodiment of a method for converting an SNMP trap into a CMIP alert message in accordance with the present invention.

As shown in the figure, the SNMP system generates an BER coded SNMP trap (301) and the BER interpreter converts the BER coded SNMP trap into an abstract syntax notation. 1 is interpreted as a trap in the form of Abstract Syntax Notation 1 (hereinafter referred to as "ASN .1") (302), and the SNMP trap message interpreter is interpreted by the ASN. One type of trap is analyzed (303).

Thereafter, the SNMP trap information extractor determines whether the trap interpreted from the SNMP trap message interpreter is a standard trap (304), and if the interpreted trap is an enterprise user defined trap, perform an enterprise user defined trap conversion process as shown in Table 4 below. If the interpreted trap is a standard trap (305), a standard trap conversion procedure as shown in Table 5 below is performed (306).

Thereafter, the CMIP alert message generator generates CMIP alerts according to the information extracted from the SNMP trap information extractor (307), and the X open management protocol / X open object management application program interface inputs the CMIP alerts generated from the CMIP alert message generator. Receive the CMIP protocol stack manipulation command (308), and the CMIP protocol forwards the CMIP alert coded according to the CMIP protocol stack manipulation command to the CMIP system (309).

Parameter name Required / Optional SNMP trap field definitions Invoke Identifier necessary Place counters on the SNMP-CMIP alarm gateway device and use them Mode necessary Use unverified mode Managed Object Class necessary Define a managed object field of type SNMP Object Identifier in the variable binding, taking the managed object instance string from its name field and using the value from the string in the name field Managed Object Instance necessary Use the name field of an administered object field Event Type necessary Assign and use trap numbers appropriate for CMIP's five alert types to specific-traps Event Time necessary Use the current time of the SNMP Trap Protocol Data Unit (PDU) Event Information - Probable Cause necessary Define the fields in the variable binding that represent the 50 alarm causes for CMIP. Specific Problem necessary Not supported Perceived Severity necessary Define the six severity fields used by CMIP in variable binding and use them. Back-up Status Selection Not supported Back-up Object Selection Not supported Trend Indication Selection Not supported Threshold Information Selection Not supported Notification Identifier Selection Not supported State change definition Selection Not supported Monitored Attributes Selection Not supported Proposed Repair Actions Selection Not supported Additional text Selection Not supported Additional Information Selection Not supported

Parameter name Required / Optional SNMP trap field definitions Invoke Identifier necessary Place counters on the SNMP-CMIP alarm gateway device and use them Mode necessary Use unverified mode Managed Object Class necessary Define and use managed object instances representing the entire SNMP system Managed Object Instance necessary Define and use an administered object instance with the SNMP system's IP address or Internet name. Event Type necessary Set CMIP event type according to the code of the standard trap (coldStart: device alarm, warmStart: device alarm, linkDown: communication alarm, linkUp: communication alarm, authenticationFailure: security service or mechanism violation, egpNeiborLoss: communication alarm) Event Time necessary Use the current time of the SNMP Trap Protocol Data Unit (PDU) Event Information - Probable Cause necessary Use the appropriate alarm cause according to the code of the standard trap (coldStart: power cause, warmStart: power cause, linkDown: LAN error, linkUp: LAN error, authenticationFailure; authentication failure, egpNeighborLoss: communication subsystem failure) Specific Problem necessary Not supported Perceived Severity necessary Use appropriate severity depending on the code of the standard trap (coldStart: critical or major, warmStart: major or minor, linkDown: critical or major, linkUp: clear, authenticationFailure; major, egpNeighborLoss: critical or major) Back-up Status Selection Not supported Back-up Object Selection Not supported Trend Indication Selection Not supported Threshold Information Selection Not supported Notification Identifier Selection Not supported State change definition Selection Not supported Monitored Attributes Selection Not supported Proposed Repair Actions Selection Not supported Additional text Selection Not supported Additional Information Selection Not supported

4 is a diagram illustrating an embodiment of a gateway device for converting a CMIP alert message into an SNMP trap according to the present invention.

As shown in the figure, the gateway device for converting a CMIP alert message into an SNMP trap includes a CMIP system 401, a CMIP protocol 402, an X open management protocol / X open object management application program interface 403, a CMIP alarm. A message interpreter 404, an SNMP trap information generator 405, an SNMP trap message generator 406, a BER coder 407, and an SNMP system 408.

First, when the BER coded CMIP alert is generated by the CMIP system 401, the CMIP protocol 402 forwards the CMIP alert to the X open management protocol / X open object management application program interface 403, and the X open management protocol / X open type. The object management application program interface 403 extracts information from the CMIP alerts delivered from the CMIP protocol 402 and outputs the information to the CMIP alert message interpreter 404. The CMIP alert message interpreter 404 is an X open management protocol / X open type. The information extracted from the object management application program interface 403 is interpreted and output to the SNMP trap information generator 405, and the SNMP trap information generator 405 is configured to convert the information interpreted from the CMIP alert message interpreter 404 into an enterprise user trap or Whether you are creating a standard user trap or a standard trap .

In addition, the SNMP trap message generator 406 generates a corresponding trap generated from the SNMP trap information generator 405 as an SNMP trap in the form of abstract syntax notation 1, and outputs it to the BER coder 407, and outputs the BER coder 407. The SNMP trap generated from the SNMP trap message generator 406 is coded by BER and forwarded to the SNMP system 407.

5 is a flowchart illustrating an embodiment of a method for converting a CMIP alert message into an SNMP trap according to the present invention.

The CMIP system first generates a BER coded CMIP alert (501), and the CMIP protocol passes the CMIP alert to the X Open Management Protocol / X Open Object Management application interface (502), and the X Open Management Protocol / X Open Object Management application. The program interface extracts information from CMIP alerts delivered from the CMIP protocol (503), the CMIP alert message interpreter interprets information extracted from the X Open Management Protocol / X Open Object Management application program interface (504), and SNMP trap information. The generator determines whether the information interpreted from the CMIP alert message interpreter is an enterprise user trap (505), and if the interpreted information is an enterprise user defined trap, performs an enterprise custom trap generation process (506). Standard traps as shown in Table 6 It performs a process (507).

The SNMP trap message generator then creates the corresponding trap generated from the SNMP trap information generator as an SNMP trap in the form of abstract syntax notation 1 (508), and the BER coder codes the SNMP trap created from the SNMP trap message generator into BER (509). The SNMP system receives the coded SNMP trap (510).

SNMP PDU Fields Field value Version 0 Community random value PDU type 4 Enterprise Object ID for SNMP (1.3.6.1.2.1.11) Administrative Agent Address IP address of the CMIP system Standard trap Use a value between 0-5 depending on the cause of the alarm Custom traps 0 Time stamp Transmit current time as relative to system uptime (sysUpTime) Variable binding -

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

Therefore, the present invention as described above enables the interworking between systems using SNMP and CMIP as a management protocol, so that a system using SNMP as a management protocol can be managed in a TMN system, which is a network management standard, and a system using SNMP. Receives alerts from the system using CMIP, enables one-way network management, and adds only gateway without changing existing network management system when managing network by TMN methodology later. It is effective to enable the system using the SNMP of the interworking with the TMN system.

Claims (8)

A gateway device for converting a simple network management protocol trap into a common management information protocol alert message, First trap interpreting means for interpreting the coded simple network management trap as a trap in abstract syntax notation form when the simple network management protocol system generates a coded simple network management protocol trap; Second trap interpreting means for interpreting a trap message in the form of abstract syntax notation converted from said first trap converting means; A trap information extraction means for extracting trap information by determining whether the trap of the message interpreted from the second trap analyzing means is a standard trap or an enterprise user defined trap or performing a standard user defined trap conversion process ; Alert generating means for generating a common management information protocol alert in accordance with the trap information extracted from said trap information extracting means; Protocol stack control means for receiving a common management information protocol alert generated from the alert generating means and transmitting a common management information protocol stack manipulation command; And Alarm delivery means for delivering a common management information protocol alert coded according to the common management information protocol stack operation command to a common management information protocol system Gateway device for converting a simple network management protocol trap comprising a common management information protocol alert message. A method for converting a simple network management protocol trap into a common management information protocol alert message, the method comprising: If the simple network management protocol system generates a coded simple network management protocol trap, the interpreter of the coded simple network management protocol trap comprises: a first step of interpreting the coded simple network management trap as a trap in abstract syntax notation form; The simple network management protocol trap message interpreter may comprise a second step of interpreting a trap message in the form of translated abstract syntax notation; The simple network management protocol information extractor may include: a third step of determining whether the trap of the interpreted message is a standard trap or an enterprise user defined trap to perform an enterprise user defined trap conversion process or a standard trap conversion process to extract trap information; Generating a common management information protocol alert according to the extracted trap information; Receiving a generated common management information protocol alert and transmitting a common management information protocol stack operation command; And A sixth step of delivering a common management information protocol alert coded according to the common management information protocol stack manipulation command to a common management information protocol system; How to convert a simple network management protocol trap comprising a common management information protocol alert message. The method of claim 2, In the enterprise custom trap conversion process, an alarm identifier uses a counter, a mode uses an unacknowledged mode, a managed object class and an instance uses variable binding, an event type is converted according to a user defined trap code, and an event time. Converts a simple network management protocol trap into a common management information protocol alert message, using the current time of the trap, converting the cause of the alert according to the variable binding, and converting the severity of the alert according to the variable binding. The method of claim 2 or 3, In the standard trap conversion process, an alarm identifier uses a counter, a mode uses an unacknowledged mode, managed object classes and instances use an Internet protocol address or an Internet name, event types are converted according to a standard trap code, and an event Convert a simple network management protocol trap into a common management information protocol alert message, wherein the time uses the current time of the trap, the alert cause is converted according to the standard trap code, and the severity of the alarm is converted according to the standard trap code. How to. A gateway device for converting a common management information protocol alert message into a simple network management protocol trap. Alarm message delivery means for receiving a coded alarm message from the common management information protocol system and delivering the alarm message; Information extracting means for extracting information from the alert message delivered from said alert message transmitting means; Information analyzing means for analyzing information extracted from said information extracting means; Trap generation means for distinguishing whether the information interpreted from the information interpretation means is an enterprise user defined trap or a standard trap and performing an enterprise user defined trap or a standard trap generation process; Trap creation means for creating the corresponding trap generated from the trap generation means into a simple network management information trap in the form of abstract syntax notation; And Trap coding means for coding a simple network management information trap created from said trap creation means and transferring it to a simple network management protocol system Gateway device for converting a common management information protocol alert message into a simple network management protocol trap. A method of converting a common management information protocol alert message into a simple network management protocol trap, A first step of the common management information protocol protocol stack receiving a coded alert message from the common management information protocol system and delivering the alert message; A second step of extracting information from the delivered alert message by the common management information protocol alert message information extractor; A third step of interpreting the extracted information by the common management information protocol alert message interpreter; The common management information protocol alert message generator comprises: a fourth step of determining whether the interpreted information is an enterprise user defined trap or a standard trap and performing an enterprise user defined trap or a standard trap generation process; A simple network management protocol message generator comprising: generating a corresponding generated trap as a simple network management information trap in an abstract syntax notation form; And The coder encodes the created simple network management information trap and transfers it to the simple network management protocol system. How to convert a common management information protocol alert message comprising a simple network management protocol trap. The method of claim 6, In the enterprise custom trap generation process, the version is set to '0', the community is set to the community of the corresponding system, the protocol data unit is set to '4', and the enterprise sets the object identification information according to the trap type. The management agent address is the address of the common management information protocol system, the standard trap is '0', the user defined trap uses the corresponding trap number according to the event type, and the time stamp is the event of the common management information protocol. Transmit time as a relative time relative to the system up time, and variable binding simplifies the common management information protocol alert message, which uses the information to be included in the variable binding, as defined by the enterprise-defined trap. Convert to Network Management Protocol Trap Way. The method according to claim 6 or 7, In the standard trap generation process, the version is '0', the community is the community of the system, the protocol data unit is '4', and the enterprise uses the object identification information of the simple network management protocol. The manager address is the Internet protocol address of the common management information protocol system, the standard traps are '0' to '5' depending on the cause of the alarm, the user defined traps are '0', and the time stamp is the common management information. A method of converting a common management information protocol alert message into a simple network management protocol trap, characterized in that the event time of the protocol is converted and transmitted relative to the system up time.

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