| 摘要 |
PURPOSE: A method for downloading a file of an agent is provided to request the transfer of a file necessary for agent operations to an EMS(Element Management System) when the agent is started, and to download the program file using a TFTP(Trivial File Transfer Protocol). CONSTITUTION: If an agent is initially started(S10), a file processor of the agent delivers a file transfer request message to an EMS(S12). The agent sequentially receives setup request messages including information of a program file to be received from the EMS(S14). The agent transmits a get response message, that is a response message to the setup request messages, whenever receiving the setup request messages, and reflects information of the program file included in the setup request messages in an MIB(Management Information Base)(S16). If a start flag is received from the EMS(S18), the agent drives a TFTP to set up connection with a TFTP demon(S20). Th agent searches the program file in a directory storing the program file(S22), and divides the searched file into blocks having a predetermined size to receive the divided file in UDP(User Datagram Protocol) packets(S24). Whether the received file is normal is checked(S26). If so, a type of the program file is analyzed(S28) and the program file is processed to have a type usable in the agent(S30). The processed program file is accumulated in a predetermined memory area(S32) and operated by cases(S34).
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