File transmission method based on TFTP

Abstract

The invention discloses a file transmission method based on a TFTP. The method comprises the steps that a file verification process is added, MD5 verification and inspection are carried out on files in a client side, and a result is fed back to a server side; a file processing feedback process is added, and after the files are processed in the client side, the result stored in a flash is fed back to the server side. The method is based on the file transmission protocol which is formed through TFTP modification and expansion, the file verification process and the file processing feedback process are added based on the TFTP, therefore, file verification and processing result query are supported, whether the client side receives the accurate files or not and whether the files are accurately processed or not can be known by the server side, errors of data manipulation caused in the file transmission process can be found in time, and the accurate processing result can be fed back to the server side in real time.

Description

technical field [0001] The invention relates to a file transmission method between single boards of frame-type switch equipment, in particular to a file transmission method based on the TFTP protocol. Background technique [0002] A modular switch generally includes two or more boards and a backplane. The single boards are connected by being inserted into the slots of the backplane, and the transmission of internal control data between the single boards is completed through the channels provided by the backplane. [0003] When a modular switch device needs to transfer files between boards, such as program software, log files, and configuration files, it is usually easier to use the TFTP protocol to transfer files. TFTP (Trivial File Transfer Protocol, simple file transfer protocol) is a simple protocol for transferring files. In commonly used embedded operating systems, such as vxWorks and linux, it is implemented based on the IP / UDP protocol and cannot be implemented on no...

AI Technical Summary

Problems solved by technology

The TFTP protocol only supports the transfer of files from the server to the client, and cannot further support the server to understand the results of file verification and processing.

[0005] Moreover, the file transfer under the TFTP protocol cannot know the size information of the transferred file in advance, so the client cannot pre-allocate a suitable receiving buffer, which will cause two problems: 1) memory utilization is not high; 2) unable to complete transfer

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