KR20040054018A - Apparatus and Method of Network Management by Upgrading Simple Network Management Protocol Management information Base Bundle Dynamically - Google Patents

Abstract

PURPOSE: A network management device using a dynamic updating of an MIB(Management Information Base) bundle of an SNMP(Simple Network Management Protocol) agent and a method thereof are provided to receive an MIB bundle from a network management server to dynamically collect new management information, and to inform the network management server of a network failure, thereby efficiently managing a network. CONSTITUTION: A network management server(20) obtains authentication for a transmission right of an MIB bundle(14) from a remote SNMP agent(11), transmits the MIB bundle(14) for dynamically collecting new management information to the SNMP agent(11), receives management information on a network from the SNMP agent(11), and manages the network. A network device(10) performs an authentication process for the transmission right of the MIB bundle(14), dynamically updates the MIB bundle(14), dynamically collects the management information, and transmits the collected information to the network management server(20).

Description

Apparatus and Method of Network Management by Upgrading Simple Network Management Protocol Management information Base Bundle Dynamically}

The present invention relates to a network management apparatus using dynamic update of a management information base bundle of a simple network management protocol agent, and a method and a computer readable recording medium recording a program for realizing the method. Based on the Open Service Gateway initiative (OSGi) framework, which consists of Java Application Interfaces (APIs) and provides an environment in which multiple independent application bundles can run on a single platform, Therefore, the network device dynamically gathers information about the network owned by new management information efficiently and quickly, and also the network manager's simple network management protocol (hereinafter referred to as " SNMP ") agent itself causes the network to fail. SNMP alerts to inform the network management server It relates to a computer-readable recording medium recording a program for realizing the method and the network management apparatus and method to transmit and install a management information base (hereinafter referred to as, "MIB") in the tree online.

Existing network management devices are likewise composed of an administrator management server and a network device. However, the conventional network management server polls the information owned by the network device it manages to accumulate data, and processes and analyzes the accumulated data to determine network performance and failure. Communication is performed between the network management server and the network device using protocols such as Simple Network Management Protocol (SNMP) and Common Management Information Protocol (CMIP).

SNMP is a protocol that monitors and controls network management servers and network devices and their operations. It collects information on managed objects managed by agents by get (hereinafter referred to as "GET") messages. Hereinafter, information of the network device can be set by the message " SET ". In addition, instead of polling the network management server through a trap (hereinafter, referred to as a "trap") message, the SNMP agent of the network device may notify the network management server of a failure state.

Information managed by an agent is defined as a Management Information Base (MIB) in a tree structure. The MIB is a formal description of a set of network objects that can be managed using SNMP. The format of the MIB is defined as part of SNMP. Among the MIBs, MIB-I means the definition of the initial MIB, and MIB-II means the current definition. Each device manages necessary management information by defining its own management MIB.

In general, in implementing the SNMP agent, since the MIB code is included in the agent code, the MIB code and the agent code are implemented together instead of being completely independent components. Because the implementation of functions that are called to collect management information from the MIB affects the entire agent code, not just the MIB bundle, to upgrade the SNMP agent's MIB, you install and compile the SNMP agent full code on a network device. You must restart it.

In order to solve this problem, conventionally, an agent incorporating the concept of a spreadsheet (Spreadsheet) and embedding a MIB module composed of two-dimensional cell tables has been proposed. Each cell consists of a cell that contains data and a script to derive the resulting value from that cell. The spreadsheet agent's manager includes a script to retrieve the cell's value in the data field of the SNMP SET request message and sends it to the agent, thereby creating a new cell.

However, since the conventional method is composed of a script language executable in the agent, the script can be assigned to the MIB at any time by the SNMP SET request message, and the execution function for collecting the MIB value can be changed dynamically. The disadvantage is that only some of the MIBs made up of spreadsheets can be modified.

In addition, Knami (hereinafter referred to as "XNAMI") agent has been proposed that can dynamically add or delete MIB objects. This XNAMI agent delivers the script string in the form of byte code in the data field of the SNMP SET message, so you can execute the delivered script directly to get the desired information, and define the XNAMI MIB to add the object containing the execution script. It is possible to delete or delete.

However, this conventional method is not only able to collect upgraded information when upgrading functional modules such as message processing module and security module of SNMP agent, but also device driver dependent information and operating system related information. The disadvantage is that you can't.

The present invention has been proposed to solve the above problems, the network management device including a SNMP agent divided into an OSGi framework based SNMP bundle, MIB management bundle and MIB bundle, network management module and bundle transmission module The network device includes a network management server including a network management server, and the network device receives and installs a MIB bundle from a remote network management server to dynamically collect new management information, and also informs the network management server of a network failure. It is an object of the present invention to provide a network management apparatus for managing a network, a method thereof, and a computer-readable recording medium having recorded thereon a program for realizing the method.

1 is a configuration diagram of an apparatus for managing a network using a dynamic update of a Management Information Base (MIB) bundle of a Simple Network Management Protocol (SNMP) agent according to the present invention.

2 is a flow diagram of an embodiment of a method for a network management server according to the present invention to manage a network by dynamically updating a MIB bundle of an SNMP agent.

3 is a detailed flowchart of an embodiment of a method in which a network management server according to the present invention manages a network by dynamically updating a MIB bundle of an SNMP agent.

* Explanation of symbols for the main parts of the drawings

10: network device 11: SNMP agent

12: SNMP Bundle 13: MIB Management Bundle

14: MIB Bundle 20: Network Management Server

21: network management module 22: bundle transfer module

The apparatus of the present invention for achieving the above object, in the network management apparatus, after obtaining authentication for the management information base (MIB) bundle transmission authority from a remote Simple Network Management Protocol (SNMP) agent, the new management information is dynamically changed. A network management server for transmitting a MIB bundle for collection to the SNMP agent, receiving management information about a network from the SNMP agent, and managing a network by using the received management information; And configured based on an OSGi framework to perform authentication according to an authentication request for transmission authority of the MIB bundle from the network management server, dynamically receive the MIB bundle from the network management server, and dynamically update the received MIB bundle. And a network device for dynamically collecting management information required by the network management server according to the updated MIB bundle and transmitting the management information to the network management server.

On the other hand, the method of the present invention, in the network management method of the network management device, the remote bundle transmission module requests the MIB management bundle authentication authority of the SNMP agent of the SNMP agent, and the authentication of the SNMP agent received the request A first step of, when the MIB management bundle authenticates the authority, the authenticated bundle transmitting module transmitting a MIB bundle to the MIB management bundle; A second step of the OSGi framework notifying the SNMP bundle of the MIB bundle installation completion event after the MIB management bundle of the SNMP agent installs the MIB bundle received from the bundle transmission module in an OSGi framework based network device; The SNMP bundle calls the MIB tree generation service to initialize the MIB tree, calls the start service of the trap function to initialize the trap function of the MIB bundle, and then manages network initialization of the MIB tree and the trap function. A third step of notifying the module; And a fourth step of transmitting, by the network management module, management information about a network, an SNMP bundle of the SNMP agent that has received management information about the network to transmit management information dynamically collected by the MIB bundle. It features.

On the other hand, the present invention, in order to manage the network, the network management device having a processor, the remote bundle transmission module requests the MIB management bundle of the SNMP agent for authentication of the MIB bundle transmission authority, and receives the request A first function of sending, by the authenticated bundle transmitting module, a MIB bundle to the MIB management bundle when the MIB management bundle of the SNMP agent authenticates the authority; A second function of notifying the SNMP bundle of the MIB bundle installation completion event by the OSGi framework after the MIB management bundle of the SNMP agent installs the MIB bundle received from the bundle transmission module in an OSGi framework based network device; The SNMP bundle calls the MIB tree generation service to initialize the MIB tree, calls the start service of the trap function to initialize the trap function of the MIB bundle, and then manages network initialization of the MIB tree and the trap function. A third function of notifying the module; And when the network management module requests management information about the network, an SNMP bundle of the SNMP agent that has received the management information about the network transmits management information dynamically collected by the MIB bundle. A computer readable recording medium having recorded a program is provided.

As such, in the present invention, the SNMP agent is divided into an SNMP bundle, an MIB management bundle, and an MIB bundle to implement the MIB code and the SNMP agent code as completely independent components, so that a remote network server can dynamically update the MIB bundle of the SNMP agent. If the network server requests management information about the network, the SNMP agent dynamically collects the management information by the MIB bundle and transmits the management information to the network management server to efficiently manage the network.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an apparatus for managing a network using a dynamic update of a management information base bundle of a simple network management protocol agent according to the present invention.

The network management apparatus according to the present invention includes an SNMP agent 11 divided into an SNMP bundle 12, an MIB management bundle 13, and an MIB bundle 14 based on the Open Service Gateway initiative (OSGi) framework 15. The network management server 20 includes a network device 10, a network management module 21, and a bundle transmission module 22.

In more detail, the network device 10 includes an SNMP agent 11 and an OSGi framework 15, wherein the SNMP agent 11 includes a network management module (eg, a network management module 20 of the network management server 20). SNMP bundle 12 for processing the request of the network management module 21 by using the management information about the network dynamically received by the MIB bundle 14 by receiving a management information request for the network from the network 21, the network MIB bundle 14 for dynamically collecting management information about the network requested from the network management module 21 of the management server 20 to the SNMP bundle 12 and network management of the network management server 20 M for performing authentication according to the authentication request for the MIB bundle transmission authority from the module 21 and installing the MIB bundle 14 transmitted from the bundle transmission module 22 of the network management server 20. Including an IB management bundle 13, the OSGi framework 15 provides an environment in which a number of independent application bundles can operate on one platform.

The network management server 20 receives the management information about the network from the SNMP bundle 12 of the SNMP agent 11 and remotely manages the network with the network management module 21 for managing the network by using the received management information. Bundle transmission module 22 for transmitting the MIB bundle for dynamically collecting new management information to the MIB management bundle 13 of the SNMP agent 11 after acquiring the authentication for the MIB bundle transmission authority from the SNMP agent of the SNMP agent 11 It includes.

2 is a flowchart illustrating a method for managing a network by dynamically updating a MIB bundle of an SNMP agent of a network management apparatus according to the present invention.

First, the bundle transmission module 22 of the network management server 20 dynamically collects management information requested by the network management module 21 of the network management server 20, and notifies the network management server that a failure of the network occurs. The MIB bundle 14 for sending to the network management module 21 of 20 is transmitted to the MIB management bundle 13 of the network device 10 based on the OSGi (200). Then, the MIB management bundle 13 installs the MIB bundle 14 received from the bundle transmission module 22 of the network management server 20 in the network device 10 based on the OSGi framework 15. (201).

Subsequently, the SNMP bundle 12 receives the MIB bundle 14 installation event generated by the OSGi framework 15 to generate an MIB tree, and does not rely on polling of the network management server 20 to generate an SNMP agent of the network device. 11) After initializing a trap function, which is a function of notifying an administrator of a failure state, the SNMP bundle 12 sends a MIB bundle installation termination event to notify the network management server 20 of completion of initialization. (202). After receiving the MIB bundle termination event provided by the SNMP bundle 12, the network management server 20 performs a network management function (203).

3 is a detailed flowchart illustrating a method for managing a network by dynamically updating a MIB bundle of an SNMP agent of a network management apparatus according to the present invention.

First, the bundle transfer module 22 of the network management server 20 first accesses from the MIB management bundle 13 of the SNMP agent 11 before transmitting the MIB bundle 14 for dynamically collecting new management information. Authorization for authorization, that is, authorization for transmitting the MIB bundle to the network device 10 is authenticated (301). After the authentication process is completed, the network management server 20 transmits the MIB bundle 14 to the MIB management bundle 13 of the SNMP agent 11 (302).

Thereafter, the transmitted MIB bundle 14 is installed in the network device based on the OSGi framework 15 by the MIB management bundle 13 (303). In this process, the OSGi framework 15 provides the SNMP bundle 12 with a MIB bundle installation completion event (304).

Subsequently, the SNMP bundle 12 receiving the installation completion event calls the MIBreeCreate service of the MIB bundle 14 to configure the MIB tree (305), and simultaneously starts the trap function (TrapStart). By calling the service, the SNMP agent itself operates the trap function of the MIB bundle 14 to inform the administrator of the failure status without polling the network management server 20 (306). Thereafter, the SNMP bundle 12 notifies the network management server 20 of the initialization of the SNMP agent with the MIB bundle installation termination event (307).

Thereafter, the network management server 20 receives a message (GetRequest) for collecting management information about management objects managed by the SNMP agent 11, or information (name, location information, etc.) of the network device 10. The manager sends a message (SetRequest) to the desired information to the SNMP bundle 12 (308). The SNMP bundle 12 receives the message, the manager wants the information desired by the GetMIBValue command or the network device 10 to collect management information on management objects managed by the SNMP agent 11. The SetMBI value command (SetMIBValue) to be set is transmitted to the MIB bundle 14 (309). The MIB bundle 14 receiving the command (GetMIBValue or SetMIBValue) performs a GetMibValue command (GetMIBValue) to collect management information on an object managed by the SNMP agent 11, or a SetMIB value command (SetMIBValue). ) To set the information possessed by the network device 10 as desired information by the administrator. Thereafter, the SNMP bundle 12 transmits the result performed by the MIB bundle 14 to the network management server 20 (310).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

The present invention as described above, since the network administrator can remotely transmit and install the MIB bundle of the SNMP agent that can perform a new management function on the network device, it is easy to apply the new management function to the network device, thereby It is convenient to manage the network by quickly and easily updating the management information of a large and diversified network with new management information. Also, the network server can recognize the failure status without polling the network device, so that the network can be updated more quickly. There is an excellent effect to manage.

Claims (5)

In the network management apparatus, After acquiring the management information base (MIB) bundle transmission authority from a remote Simple Network Management Protocol (SNMP) agent, a MIB bundle for dynamically collecting new management information is transmitted to the SNMP agent, and from the SNMP agent. A network management server for receiving management information about a network and managing a network using the received management information; And It is configured based on OSGi framework and performs authentication according to the authentication request for the transmission authority of the MIB bundle from the network management server, dynamically receives the MIB bundle from the network management server, and dynamically updates the Network device for dynamically collecting the management information required by the network management server according to the updated MIB bundle to transmit to the network management server Network management apparatus using the dynamic update of the management information base bundle of the simple network management protocol agent comprising a. The method of claim 1, The SNMP agent, An SNMP bundle for receiving a management information request for a network from a network module of the network management server and processing a request of the network management module by using management information about a network dynamically collected by the MIB bundle; The MIB bundle for dynamically collecting management information about a network requested from a network management module of the network management server and transmitting the same to an SNMP bundle; And MIB management bundle for performing authentication according to the authentication request for the authority to transmit the MIB bundle from the network management module of the network management server, and installing the MIB bundle received from the network management module of the network management server. Network management apparatus using the dynamic update of the management information database bundle of the simple network management protocol agent comprising a. The method of claim 2, The network management server, The MIB bundle is configured to dynamically collect new management information after acquiring authentication for MIB bundle transmission authority from the remote MIB management bundle and inform the network management module that the SNMP agent has failed in the network. A bundle transmission module for transmitting; And Network management module for managing the network by receiving management information on the network requested from the SNMP bundle of the SNMP agent from the SNMP bundle of the SNMP agent Network management apparatus using the dynamic update of the management information database bundle of the simple network management protocol agent comprising a. In the network management method of the network management device, The remote bundle transmission module requests the MIB management bundle of the SNMP agent to authenticate the MIB bundle transmission authority, and if the MIB management bundle of the SNMP agent that received the authentication authenticates the authority, the authenticated bundle A first step of the sending module sending a MIB bundle to the MIB management bundle; A second step of the OSGi framework notifying the SNMP bundle of the MIB bundle installation completion event after the MIB management bundle of the SNMP agent installs the MIB bundle received from the bundle transmission module in an OSGi framework based network device; The SNMP bundle calls the MIB tree generation service to initialize the MIB tree, calls the start service of the trap function to initialize the trap function of the MIB bundle, and then manages network initialization of the MIB tree and the trap function. A third step of notifying the module; And A fourth step of transmitting the management information dynamically collected by the MIB bundle by the SNMP bundle of the SNMP agent that has received the management information about the network when the network management module requests management information about the network; Network management method using the dynamic update of the management information database bundle of the simple network management protocol agent comprising a. In order to manage a network, a network management device having a processor, The remote bundle transmission module requests the MIB management bundle of the SNMP agent to authenticate the MIB bundle transmission authority, and if the MIB management bundle of the SNMP agent that received the authentication authenticates the authority, the authenticated bundle A first function of the sending module to send a MIB bundle to the MIB management bundle; A second function of notifying the SNMP bundle of the MIB bundle installation completion event by the OSGi framework after the MIB management bundle of the SNMP agent installs the MIB bundle received from the bundle transmission module in an OSGi framework based network device; The SNMP bundle calls the MIB tree generation service to initialize the MIB tree, calls the start service of the trap function to initialize the trap function of the MIB bundle, and then manages network initialization of the MIB tree and the trap function. A third function of notifying the module; And A fourth function of transmitting the management information dynamically collected by the MIB bundle by the SNMP bundle of the SNMP agent that has received the management information about the network when the network management module requests management information about the network; A computer-readable recording medium having recorded thereon a program for realizing this.