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Trivial File Transfer Protocol (TFTP)
Transfer Protocol (FTP) implements a full
set of command and reply functionality that enables a user to perform
a wide range of file movement and manipulation tasks between two TCP/IP
machines. It is ideal as a general purpose protocol for file transfer
between computers, but on certain types of hardware, it is too complex
to easily implement, and provides more capabilities than are really
needed. In cases where only the most basic file transfer functions are
needed and simplicity and small program size is of paramount importance,
a companion to FTP was created called the Trivial File Transfer Protocol
In this section I provide a description
of the operation of TFTP. I begin with an overview description of the
protocol, its history and motivation, and the relevant standards that
describe it. I discuss its operation in general terms and how TFTP clients
and server communicate, and explain TFTP messaging in detail. I then
discuss TFTP options and the TFTP option negotiation mechanism, and
conclude by showing the various TFTP message formats.
Background Information: While TFTP is a distinct protocol from FTP, explaining the former is easier when the reader is familiar with the latter. I assume that the reader has some understanding of FTP, since it is the more commonly-used protocol. If you have come to this section prior to reading the section on FTP, I'd recommend at least reading the FTP overview topic before proceeding.
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The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005
© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
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