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Experiments with a Simple File Transfer Protocol for Radio Links using Enhanced Trivial File Transfer Protocol (ETFTP) (RFC1986)

IP.com Disclosure Number: IPCOM000004264D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 17 page(s) / 46K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

W. Polites: AUTHOR [+3]

Abstract

Status of this Memo

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group W. Polites

Request for Comments: 1986 W. Wollman

Category: Experimental D. Woo

The MITRE Corporation

R. Langan

U.S. ARMY CECOM

August 1996

Experiments with a Simple File Transfer Protocol for Radio Links

using Enhanced Trivial File Transfer Protocol (ETFTP)

Status of this Memo

This memo defines an Experimental Protocol for the Internet

community. This memo does not specify an Internet standard of any

kind. Discussion and suggestions for improvement are requested.

Distribution of this memo is unlimited.

1. INTRODUCTION SECTION

This document is a description of the Enhanced Trivial File Transfer

Protocol (ETFTP). This protocol is an experimental implementation of

the NETwork BLock Transfer Protocol (NETBLT), RFC 998 [1], as a file

transfer application program. It uses the User Datagram Protocol

(UDP), RFC 768 [2], as its transport layer. The two protocols are

layered to create the ETFTP client server application. The ETFTP

program is named after Trivial File Transfer Protocol (TFTP), RFC

1350 [3], because the source code from TFTP is used as the building

blocks for the ETFTP program. This implementation also builds on but

differs from the work done by the National Imagery Transmission

Format Standard [4].

This document is published for discussion and comment on improving

the throughput performance of data transfer utilities over Internet

Protocol (IP) compliant, half duplex, radio networks.

There are many file transfer programs available for computer

networks. Many of these programs are designed for operations through

high-speed, low bit error rate (BER) cabled networks. In tactical

radio networks, traditional file transfer protocols, such as File

Transfer Protocol (FTP) and TFTP, do not always perform well. This is

primarily because tactical half duplex radio networks typically

provide slow-speed, long delay, and high BER communication links.

ETFTP is designed to allow a user to control transmission parameters

to optimize file transfer rates through half-duplex radio links.

The tactical radio network used to test this application was

developed by the Survivable Adaptive Systems (SAS) Advanced

Technology Demonstration (ATD). Part of the SAS ATD program was to

address the problems associated with extending IP networks across

tactical radios. Several tactical radios, such as, SINgle Channel

Ground and Airborne Radio Systems (SINCGARS), Enhanced Position

Location Reporting Systems (EPLRS), Motorola LST-5C, and High

Frequency (HF) radios have been interfaced to the system. This

document will discuss results o...