Experiments with a Simple File Transfer Protocol for Radio Links using Enhanced Trivial File Transfer Protocol (ETFTP) (RFC1986)
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2019-Feb-14
Internet Society Requests For Comment (RFCs)
W. Polites: AUTHOR [+3]
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 , as a file transfer application program. This memo defines an Experimental Protocol for the Internet community.
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 , as a file transfer application program. It uses the User Datagram Protocol (UDP), RFC 768 , 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 , 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 .
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.
Polites, Wollman & Woo Experimental [Page 1]
RFC 1986 ETFTP August 1996
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 obtained from using ETFTP across a point-to-point LST-5C tactical SATellite COMmunications (SATCOM) link. The network includes a 25 Mhz 486 Personal Computer (PC) called the Army Lightweight Computer Unit (LCU), Cisco 2500 routers, Gracilis PackeTen Network switches, Motorola Sunburst Cryptographic processors, a prototype forward error correction (FEC)...