KR20050023761A - method for upgrading device by using tftp in the system depending on manager's command - Google Patents

Abstract

PURPOSE: A method for upgrading devices of an access gateway using the TFTP(Trivial File Transfer Protocol) on a system by operator commands is provided to permit a device processor of the system to perform upgrade as an operator directly issues an upgrade command in a remote place. CONSTITUTION: The operator in the remote place requests the upgrade through the operator command by connecting to the system(S61). A main processor of the system receiving an upgrade request analyzes the operator command and transfers analyzed operator request information to the corresponding device processor(S62). The processor device requests an upgrade file requested from the operator to the main processor by operating the TFTP(S63). The main processor performs the upgrade by transferring the upgrade file to the device processor through the TFTP(S64).

Description

Method for upgrading device by using tftp in the system depending on manager's command}

The present invention relates to a method for upgrading devices in a system, and in particular, when upgrading devices in a system such as an access gateway, a device upgrade using a TIF in a system by an operator command that enables multiple devices to be upgraded with one operator command. It is about a method.

Conventionally, a method of upgrading a device in a system uses a method of upgrading devices by directly going to a site where a system is located and connecting a user PC to the system.

1 is a prior art understanding of a method for upgrading devices of a system, with reference to this will be described in detail an embodiment of a method for upgrading devices.

The operator can upgrade by connecting the operator PC (3) to the device processor (1) to be upgraded by going directly to the site where the system is installed. In other words, the firmware to be upgraded is stored in the operator PC 3 and connected directly to the device processor 1 to be upgraded.

When upgrading in the above manner, the operator must find the device processor (1) to be upgraded, and each must directly upgrade by connecting the operator PC (3) individually.

In addition, when the system operator is deemed that a new version of the firmware is required for the device processor (system client) 1, the device processor (system client) (1) should manually start tftp directly to the device processor (1). Only after it is notified will you upgrade via the main processor (system server) (2) and tftp.

In this case, the device processor (system client) 1, which has manually started tftp operation from the system operator, requests the main processor (system server) 2 for RRQ or WRQ.

Then, the main processor (system server) 2 sends the data or sends an error message to the device processor (system client) 1, and the client sends the data in response to receiving it again. Send to. The transmission and reception between the main processor and the device processor is repeated until the end of the corresponding transport block and the device processor is upgraded.

As described above, when a device processor of a system is to be upgraded, a problem of tftp is generated by manually connecting a port to the device processor.

On the other hand, unlike other systems, the access gateway system has a problem that the device processor automatically requests a new version of firmware from the main processor, and if the operator determines that a new version of firmware is required, the user manually manually tftps the device processor. It is inconvenient to run tftp after notifying the device processor that it should start running.

The present invention has been proposed in order to solve the above-mentioned conventional problems, and in the system by the operator command to remotely issue an upgrade command directly by the operator using the operator command and accordingly allow the device processor of the system to upgrade. An object of the present invention is to provide a device upgrade method using TIF.

In order to solve the above technical problem, the constituent means of the device upgrade method using TIF in the system by the operator's command proposed by the present invention,

In the upgrade method of devices mounted in the system,

A first step in which an operator accesses a system from a remote place and requests an upgrade through an operator command;

A second step of analyzing, by the main processor of the system receiving the upgrade request, the operator command and delivering the analyzed operator request information to the corresponding device processor;

A step 3 of requesting, by the device processor of the system receiving the operator request information, an upgrade file requested by the operator from the main processor by running tftp;

And transmitting, by the main processor, the upgrade file to the device processor using tftp to upgrade.

When the upgrade of the device is completed, characterized in that the main processor further comprises the step of delivering an upgrade completion message to the operator,

Step 4 of upgrading the device,

At the request of the device processor, the main processor searches for and reads the upgrade file in the memory, transferring the upgrade file to the device processor, and upgrading the device with the upgrade file. and,

When the upgrade file is not delivered due to a failure while the main processor delivers the upgrade file to the device processor, the device processor delivers an error message to the upgrade processor.

The operator command includes a system ID, a shelf ID, an upgrade file name, a slot position value, and information about a board type.

The board type of the operator command is used to determine whether an operator command is an error, and is selectively included in the operator command.

Hereinafter, a preferred embodiment of a device upgrade method using TFT in the system according to the present inventor's command will be described in detail.

First, with reference to (a) of FIG. 2, which shows a block diagram of a device upgrade method using a TIF in a system according to the present inventor's command, the components of the device upgrade method using a TFT in the system according to the present inventor's command The following briefly discusses and their operation and describes the embodiment.

First, when upgrading devices of the system by the system operator, devices of various systems or several access gateways may be upgraded as shown in FIG. However, since the method of upgrading the devices of each system is the same, the following describes an upgrade method for one system (System 1).

The system operator 10 performs a command to upgrade the device processors 30 of the system (access gateway, etc.) from a remote location without directly installing the corresponding system. In this case, a predetermined MMS (operator command) is executed. Use the upgrade command.

The main process 20 receives an MMS (operator command) from the remote operator 10 and analyzes the received MMS (operator command) and transmits the analyzed content (upgrade file name, etc.) to the corresponding device processor (system client) 30, and the device processor. When there is a request for an upgrade file from the (system client) 30, the file is searched for from the memory and then lowered.

The device processor 30 is a component to be upgraded with a new version of firmware. It runs tftp to the main processor 20, downloads the necessary files, upgrades, and operates as a client 30 of the system.

The memory 40 is a storage means for storing programs for devices of various systems. That is, the upgrade files are stored, and if there is an upgrade command by the operator, the file is delivered to the device to be upgraded.

Meanwhile, various upgrade files stored in the memory are managed and provided by the EMS 50. That is, the EMS delivers various firmware required in the system to the system through the network, and the received firmware is stored in the system memory and provided when a system upgrade request is requested.

The device processor (system client) 30 downloads the upgrade file from the main processor (system server) 20 by using tftp. This tftp is a type of ftp that is designed to be implemented with simpler and smaller code and is diskless. It is commonly used as a protocol to download operating system images from a system.

A user account and password are required to access files from the existing ftp server, but the tftp server can access files without these accounts and passwords, making it easier to transfer files than the existing ftp server. will be.

On the other hand, the device to be upgraded is specifically determined by the operator command. As shown in FIG. It consists of five slots), and each slot is composed of boards having their respective types.

An operation procedure of the device upgrade method using TIF in the system according to the present invention, which is an operator command having the above-described components, will be described with reference to FIG. 3.

The system operator requests the upgrade through the operator command. That is, the operator sends an upgrade request to the system by inputting an operator command (MMS) to upgrade the system device processor (system client) (S61).

The main processor of the system receiving the upgrade request from the system operator analyzes operator commands and delivers the analyzed operator request information to the device processor. The main processor detects a device to be upgraded through the received operator command and delivers operator request information to the corresponding device processor (S62).

The device processor, which receives the operator request information from the main processor, drives tftp to request an upgrade file from the main processor. That is, when an operator requests a system upgrade remotely by an operator command, the driver receives t firmware from the device processor to be upgraded and drives tftp to upgrade (S63).

In response to the request of the device processor, the main processor transfers the upgrade file to the device processor using tftp for upgrade.

Next, a preferred embodiment will be described with reference to FIG. 4, which shows a detailed flowchart of a device upgrade method using TIF in a system according to the present invention.

 First, in order to remotely upgrade the device processor (system client) of the system, the system operator attempts to access the system by executing communication software on the operator PC (S71). At this time, the connection is made through TCP to the IP address of the remote system and the communication port previously reserved.

When a connection is made between the operator PC and the system, the system operator transmits the upgrade request information to the system by inputting an operator command (MMS) for upgrading the system device processor (system client) (S72).

The operator command is input in the form of [(SYS, SID), FNAME, CID, DEV], where SYS stands for system ID, SID stands for shelf ID, and FNAME stands for upgrade file name. The CID indicates the position value of the slot and the DEV indicates the board type. As such, the information about the system client and the firmware to be upgraded is transmitted to the system client through an operator command. On the other hand, the FNAME includes the name, version and board type of the upgrade file, the position value of the slot indicates the position information of the board in the shelf of the system client.

On the other hand, the board type is used to determine if an operator command is an error. Since DEV indicates a board type in the operator command and includes board type information in the FNAME, the board type is compared to determine whether the operator command is an error. You can do it. Therefore, it is not necessary to include DEV in the operator command especially when it is not determined whether the operator command is an error or when the judgment is unnecessary. That is, DEV can optionally be included in operator commands.

The main processor (system server) of the system that receives the operator command containing the upgrade request information analyzes it (S73). As a result of analysis, if DEV is included in the operator command, it is determined whether the operator command is correct (if there is an error). If there is an error, an error (error) message is transmitted to the system operator to request the correct operator command. If the operator command is correct (S74, S75), the upgrade request information is transmitted to the system client. The contents of the analyzed command to be delivered will include the upgrade file name, slot location value, board type, etc. (S74, S76).

The main processor (system server) analyzing the operator command transmits the analyzed content (upgrade request information) to the corresponding device processor (system client) through SNMP (S64). SNMP (Single Network Management Protocol) is a network management tool with automatic upgrade among management functions.

The device processor (system client) receiving the upgrade request information of the operator starts to run tftp to download the upgrade file and requests the main process (system server) for the upgrade file requested by the operator. That is, it sends a read request (RRQ) signal and transmits a file name to be transmitted and information on a data transmission method (mode type). The mode type is information for determining whether to transmit or receive data to ASCII or binary (S77, S78).

Then, the main processor (system server) finds and reads the upgrade file requested by the operator from the disk (memory) of the main processor (system server), and transmits the upgrade file to the device processor (system client) using tftp. (S79, S80). On the other hand, the upgrade file stored in the memory is managed by the EMS and the firmware required for the system is received from the EMS through the network and stored in the system main memory.

As described above, the upgrade file is transferred from the main processor to the device processor. In this case, the file transfer is performed by 512 bytes until the file transfer is completed. If the upgrade file is not transmitted due to a failure in the file transfer process, the device process transmits an error message to inform the main processor of the transmission error.

When the upgrade file is downloaded from the device processor (system client), the corresponding device to be upgraded is upgraded to a new upgrade file (S81).

When the upgrade is completed for the corresponding device as described above, the main processor (system server) transmits a message indicating that the upgrade is completed to the operator, thereby completing the upgrade for the corresponding device (S82).

Next, the flow of data transmission and reception between the main processor and the device processor will be briefly described with reference to FIG. 5 to help understand the procedure of file transfer.

First, the main processor that analyzes the operator instructions sends the operator request information to the device processor, which includes the firmware name and version, and the file name (corresponding to the FNAME among the operator instructions) and the slot position value. And board type.

The device processor receiving the operator request information runs tftp and transmits an RRQ signal to the main processor. The RRQ includes information about an upgrade file name and a mode type (ascii or binary).

The main processor, having received the RRQ signal, decodes the information of the RRQ, finds and reads the upgrade file from the memory, and transfers the upgrade file to the device processor 512 bytes at a time.

Until the upgrade file transmission is completed, the main processor and the device processor transmit a corresponding signal as shown in FIG. 5, which is a block diagram showing a process of performing data transmission and reception according to the present invention. If the reception is successful, Ack signal is transmitted to the main processor. If reception fails, an error message is sent to request the data retransmission. On the other hand, when the main processor receives the Ack signal from the device processor, the next processor transmits the corresponding data, and if the Ack signal or the error message is not received from the device processor, the main processor transmits an error message to the device processor that the data cannot be transmitted. Perform the process of doing so.

When the data transmission and reception are performed between the main processor and the device processor as described above, and all upgrade files are transmitted, the main processor transmits an end message of the file transfer to the device processor, and the device processor successfully transmits the completion message. The upgrade file transfer is completed by transmitting the acknowledge signal to the main processor.

As described above, the remote operator can upgrade the device of the system with only the operator command. That is, when a remote operator delivers an operator command to the main processor of the system, the main processor analyzes it and delivers the analyzed operator command information to the corresponding device processor. The device processor then runs tftp and sends an RRQ (Read Request) signal to the main processor, passing the upgrade file name and board type information. Then, the data transfer is exchanged between the main processor and the device processor until the file transfer is completed (in this case, an Ack signal or an error signal is exchanged to indicate whether the data transfer is successful) and the upgrade file transfer is completed. As a result, the device upgrade procedure ends.

According to the present invention having the above-described configuration means and embodiments, it is not necessary to go to the system directly by making a firmware upgrade start request to the device processor (system client) using an operator command (MMS) at a remote location. It is effective in eliminating the inconvenience of upgrading by connecting ports.

1 is an understanding of an upgrade method of a conventional device process.

Figure 2 is a block diagram of a device upgrade method using a TIF in the system according to the inventor command.

3 is a flowchart illustrating a method of upgrading a device using TTF in a system by an operator command.

4 is a process flow diagram according to an embodiment of the present invention.

5 is a block diagram showing a process of performing data transmission and reception according to the present invention.

Claims (6)

In the upgrade method of devices mounted in the system, A first step in which an operator accesses a system from a remote place and requests an upgrade through an operator command; A second step of analyzing, by the main processor of the system receiving the upgrade request, the operator command and delivering the analyzed operator request information to the corresponding device processor; A step 3 of requesting, by the device processor of the system receiving the operator request information, an upgrade file requested by the operator from the main processor by running tftp; And transmitting, by the main processor, the upgrade file to the device processor using tftp to upgrade the device processor. The method according to claim 1, When the upgrade of the device is completed, the main processor further comprises the step of delivering an upgrade completion message to the operator device upgrade method using a tftp in the system by the operator command, characterized in that made. The method of claim 1, wherein the fourth step of upgrading the device, At the request of the device processor, the main processor searches for and reads the upgrade file in the memory, transferring the upgrade file to the device processor, and upgrading the device with the upgrade file. How to upgrade device using tftp on system by operator command. The method according to claim 3, If the upgrade file is not delivered due to a failure while the main processor delivers the device processor, the device processor transmits an error message to the main processor. . The method according to claim 1, The operator command includes a system ID, a shelf ID, an upgrade file name, a slot position value, and information about a board type. Device upgrade method using tftp in a system by an operator command. The method according to claim 5, The board type of the operator command is used to determine whether an error of the operator command, the device upgrade method using a tftp in the system by the operator command, characterized in that it is optionally included in the operator command.