KR20010054211A - Network management traffic control method for the elevated network performance based on SNMP - Google Patents

Abstract

PURPOSE: A method for controlling network management traffic is provided to be compatible with a standard network management protocol operated between an existing network manager and a to-be managed manager. CONSTITUTION: An electric communication management network includes a network manager(110) within a network management system(100), a management agent(210) within a to-be managed system(200), a system(220) to be substantially managed, and a management information base(230) in which the state of the to-be managed system(220) becomes information into a standardized management scheme. The network manager(110) sends/receives an operating command with the management agent(210) to determine the state of the to-be managed system(220). After the network manager(110) confirms the state of the to-be managed system(220), it specifies a control parameter to a filtering algorithm within the management agent(210) and the management information base(230) in order to receive the most appropriate event report(trap message) after a current state. If the management agent(210) receives the trap message for event report from the to-be managed system(220), the management agent(210) operates the filtering algorithm to selectively transmit only a trap message to be reported specified by the control parameter to the network manager(110).

Description

Network management traffic control method based on SNP for improving network performance {Network management traffic control method for the elevated network performance based on SNMP}

The present invention relates to network management in a telecommunications management network based on a network composed of Ethernet. In detail, the present invention relates to an SNMP-based network management traffic control method for improving network performance by adjusting an event occurrence condition according to network conditions for integrated management of network devices in a same management network using a standardized management method.

With the development of computer communication networks, as the components of networks become heterogeneous and vast, the data in the network is diversifying. In addition, as services are diversified with these diverse data, the network is mixed with a lot of traffic, and the network configuration is more complicated.

As a result, the requirements for managing the network have increased. In this regard, the necessity of systematically managing data generated by network management by establishing a control system for these traffic has also emerged.

In addition, considering the network configuration, where the number of management agents (network management agents) that a network manager can simultaneously manage and control is virtually unlimited, data for alarm reporting and incident reporting simultaneously in all management agents When this occurred, it was required to solve the problem when the network performance was reduced.

In particular, when the system is first installed in the network, the deviation from the performance threshold range before the normal operation of the system is not helpful for analyzing the system situation. In other words, out of the performance threshold range can be useful for system performance analysis, network performance development status, and failure prevention while the system is in normal operation.In the early stages, whether the system is operating normally is more important. . Therefore, in the evolution of a system or network, network management that can selectively process valid data in that state is required.

However, until now, no special method has existed for traffic control based on network management.

The object of the present invention developed by such a request is to achieve compatibility with the standardized network management protocol that is being operated between the network manager and the manager, and among the situation data of the managed system reported through the manager. It is to provide an SNMP-based network management traffic control method that allows the network manager to selectively report only valid data for the current network situation.

1 is a block diagram of a management network to which the present invention is applied

2 is an operation procedure diagram for performing network management traffic control according to the present invention;

3 is a flowchart illustrating a network management traffic control method according to the present invention.

Explanation of symbols on the main parts of the drawings

100: network management system 110: network manager

200: P management system 210: management agent

220: managed system (real resource) 230: management information base

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

The management network to which the present invention is applied is a management network based on Ethernet.

1 is a diagram illustrating a configuration of a management network to which the present invention is applied. The drawings also show a network element (NE) on which a network manager and a management agent which is a management target of the network manager are mounted.

As shown in the drawing, the main components of the management network are the network manager 110 in the network management system 100, the management agent 210 in the managed system 200, and a system (actual resource) that is a management target element. , And a Management Information Base (230) in which the state of the managed system 220 is informed by a standardized management scheme.

In addition, as a protocol used for operating these, the standardized standard (b) and the management information base 230 for the management agent 210 to operate / manage the management information base 230 in the managed system 200. There is a standardized standard (c) that processes the response to the management agent 210, and the own standard (d) is used between the management system 220 and the management information base 230.

In addition, between the network manager 110 and the management agent 210 uses a simple network management protocol (SNMP), a network management standardization protocol, and grasps the status of the network components to be managed using a management operation command. Perform network management functions such as state control.

2 illustrates an operation procedure for performing network management traffic control according to the present invention.

In the network management traffic control of the present invention, after the network manager 110 receives an operation command from the management agent 210 to determine the state of the network, the network manager 110 receives only the most appropriate event report (trap message) in the current state. Control parameters are assigned to the filtering algorithm 211 and the management information base 230 in 210.

It knows whether the contents of the filtering algorithm 211 is the current default operation, and if something other than the default is controlled, the management information base 230 manages and manages specific data information to be stored according to this control parameter. For that.

Then, when the management agent 210 receives a trap message for reporting an event from the managed system 220, the internal filtering algorithm 211 is operated to selectively select only the report target trap message specified as a control parameter by the network manager ( By 110).

This will be described in detail.

In order for the network manager 110 to selectively receive an incident report (trap message) generated by the management system 210 from the management agent 210 according to the network situation, the network manager 110 first grasps the state of the management network or the system 220. shall.

Here, the incident report refers to a report on the occurrence of the failure of the managed system 220, for example, when the system is installed and booted for the first time, the status report such as cold start, warm start, etc. There is.

First, the network manager 110 determines the state of the network by exchanging an operation command with the management agent 210. In detail, the network manager 110 transmits a network management command such as GetRequest or GetNext to the management agent 210 in order to know the state of the network or system 220 to be managed. Accordingly, the management agent 210 reads the value of the object that can know the state of the network or system 220 stored in the management information base 230 and transmits the value to the network manager 110.

For example, the management agent 210 reads the values of the entities included in the system group, the interface group, etc. in the management information database 230 and transmits them to the network manager 110. .

Then, the network manager 110 can determine the state (system rifle cycle, external interface state, etc.) of the network to be managed or the system 220 with reference to the transmitted data.

After the network manager 110 identifies the state of the network or system 220 to be managed, the network manager 110 determines the quality of service (QoS) of the network based on the identified state, and based on this, only the case report appropriate to the current network state is used. Control parameters are assigned to the filtering algorithm 211 and the management information base 220 in the management agent 210 for receiving.

Thereafter, all event reports generated from the system 220 are then determined by applying the filtering algorithm 211. In addition, the management agent 210 replaces values in the object with event report-related values in the corresponding management object in the management information base 230.

In other words, the events classified through the filtering algorithm 211 and classified as the report targets are made of an SNMP protocol data unit (PDU), which is a network-specific protocol, in the main process of the management agent 210, and then the network manager ( Reported to 110).

In the filtering algorithm 211, events classified as events not to be reported are discarded or not reported, and only values are changed in the corresponding management objects in the management information base 230.

As such, all of the reports on the current system error or other unusable status are not reported to the network manager 110, but only useful to the current network status, so that the traffic status of the network can be smoothly managed.

In addition, since the network manager 110 manages a plurality of managed agents, that is, management agents 210 at the same time at the same time, all the management agents 210 control the traffic by applying the filtering algorithm 211. In addition to increasing the available value of the system 100 itself, it is possible to significantly reduce the traffic in the network to provide quality services to network users.

For example, when a system is first booted up, the admStatus (administrate status) or opStatus (operational status) status of the system's external interface card is invalid. That is, only the seal / herme state of the external interface itself is valid.

Here, three types of trap messages, such as In / Out, admStatus (enable, disable), and opStatus (locked / unlocked), may be generated as trap messages related to an external interface card (I / O Port). In this initial stage of the system life cycle (see boot time), operatinal / administrate traps are controlled so that they do not occur, and only the in / out status is reported. In other words, when the system is booted up for the first time, the network status is the initial status, and it is determined that the control status is on so that only the IO port status is received and the admStatus and opStatus are prevented from occurring. .

3 is a network management flowchart in a management agent to which a filtering algorithm is applied.

The management agent 210 waits for data reception from the network manager 110 or the management target system 220 (S1), and when the data is received, identifies the type of data (S2).

As a result of the identification in step S2, if the received data is GetRequest or GetNExt sent by the network manager 110 to grasp the state of the network or system to be managed, the management information base 230 reads the value of the management object. After generating the SNMP PDU, and transmits to the network manager 110 via the network as a response message (S3 ~ S5). After transmission, the process returns to step S1 to receive data again.

As a result of identifying the received data in step S2, the parameters of the management information base 230 to be referred to when the received data is executed by the filtering algorithm 211 for receiving only the event report suitable for the current network state by the network manager 110 are provided. If it is a SetRequest sent to specify a, writes the received data value to the management object of the management information base 230 (S6). After that, the process returns to step S1 to receive data again.

On the other hand, as a result of identifying the received data in step S2, if the received data is RR data sent from the system 220 to be managed, the message type is identified (S7).

As a result of the identification in step S7, if the message type is a response message, an SNMP PDU is generated and transmitted to the network manager 110, and then the flow returns to step S1 for data reception.

However, if the identification result in step S7 is that the message type is an event report, i.e., a trap message, it is determined by filtering and analyzing according to a filtering algorithm (S8 and S9).

As a result of the determination in step S9, if it is a report target, the trap message is transmitted to the network manager 110 (S11), stored in the corresponding management object in the management information base 230, and then step S1 is continued to receive data. Go back.

However, as a result of the determination in step S9, if it is not the report target, the trap message is discarded without being transmitted to the network manager 110 or stored in the corresponding management object in the management information base 230 (S12). I will wait.

As described above, the present invention reduces the unnecessary traffic at the network level by adjusting the traffic generated by the network manager to the target managers existing in the management area according to the current network state, and thus has a considerable effect in terms of resource utilization and stabilization of the network. There is.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not intended to limit the present invention. 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 (4)

Standardize the state of the network manager 110 in the network management system 100, the management agent 210 in the managed system 200, the system 220 to be managed substantially, and the managed system 220. In the network management traffic control method in a telecommunications management network based on a network consisting of Ethernet comprising a management information base 230 informationized by the management scheme, Grasping, by the network manager 110, an operation command with the management agent 210 to determine a state of the management target system 220; After the network manager 110 has grasped the state of the managed system 220, the filtering algorithm 211 and the management information base in the management agent 210 to receive only the most appropriate event report (trap message) in the current state. Assigning a control parameter to 230; And When the management agent 210 receives a trap message for reporting an incident from the managed system 220, the network manager 110 selectively operates only a report target trap message designated as a control parameter by operating an internal filtering algorithm 211. SNMP-based network management traffic control method for improving network performance, characterized in that for controlling the network management traffic comprising the step of transmitting to. The method of claim 1, The state grasp of the management target system 220, When the network manager 110 transmits network management commands (GetRequest, GetNext) to the management agent 210, the state of the management target network or system 220 that the management agent 210 is stored in the management information base 230 SNMP-based network management traffic control method for improving network performance, characterized in that by generating the SNMP PDU by reading the value of the corresponding object that can know the information, and transmits to the network manager 110 through the network as a response message . The method according to claim 1 or 2, The control parameter designation of the network manager 110 to receive only the most appropriate event report (trap message) in the current state is A command for determining the QoS of the network based on the state of the network or system 220 managed by the network manager 110, determining a control parameter for selecting event report data based on the state, and specifying the request (SetRequest) Is transmitted to the management agent 210, SNMP management for improving network performance, characterized in that the management agent 210 is made by recording the data value received in the corresponding management object of the management information base 230 Traffic control method. Standardize the state of the network manager 110 in the network management system 100, the management agent 210 in the managed system 200, the system 220 to be managed substantially, and the managed system 220. A computer-readable recording medium having recorded thereon a program capable of controlling network management traffic in a telecommunications management network based on an Ethernet network including a management information base 230 incorporating a management information base in a conventional management scheme. , Grasping, by the network manager 110, an operation command with the management agent 210 to determine a state of the management target system 220; After the network manager 110 has grasped the state of the managed system 220, the filtering algorithm 211 and the management information base in the management agent 210 to receive only the most appropriate event report (trap message) in the current state. Assigning a control parameter to 230; And When the management agent 210 receives a trap message for reporting an incident from the managed system 220, the network manager 110 selectively operates only a report target trap message designated as a control parameter by operating an internal filtering algorithm 211. A computer-readable recording medium having recorded thereon an executable program comprising the steps of: transmitting to a computer.