Browse Prior Art Database

PPP Deflate Protocol (RFC1979)

IP.com Disclosure Number: IPCOM000004197D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 8 page(s) / 17K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Woods: AUTHOR

Abstract

The Point-to-Point Protocol (PPP) [1] provides a standard method for transporting multi-protocol datagrams over point-to-point links.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 17% of the total text.

Network Working Group J. Woods

Request for Comments: 1979 Proteon, Inc.

Category: Informational August 1996

PPP Deflate Protocol

Status of This Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Abstract

The Point-to-Point Protocol (PPP) [1] provides a standard method for

transporting multi-protocol datagrams over point-to-point links.

The PPP Compression Control Protocol [2] provides a method to

negotiate and utilize compression protocols over PPP encapsulated

links.

This document describes the use of the PPP Deflate compression

protocol for compressing PPP encapsulated packets.

Table of Contents

1. Introduction ...................................... 2

1.1 Licensing ................................... 2

2. PPP Deflate Packets ............................... 3

2.1 Packet Format ............................... 6

3. Configuration Option Format ....................... 8

SECURITY CONSIDERATIONS .................................. 9

REFERENCES ............................................... 9

ACKNOWLEDGEMENTS ......................................... 9

CHAIR'S ADDRESS .......................................... 10

AUTHOR'S ADDRESS ......................................... 10

1. Introduction

The 'deflate' compression format[3], as used by the PKZIP and gzip

compressors and as embodied in the freely and widely distributed

zlib[4] library source code, has the following features:

- an apparently unencumbered encoding and compression

algorithm, with an open and publically-available

specification.

- low-overhead escape mechanism for incompressible data. The

PPP Deflate specification offers options to reduce that

overhead further.

- heavily used for many years in networks, on modem and other

point-to-point links to transfer files for personal computers

and workstations.

- easily achieves 2:1 compression on the Calgary corpus[5]

using less than 64KBytes of memory on both sender and

receive.

1.1. Licensing

The zlib source is widely and freely available, subject to the

following copyright:

(C) 1995 Jean-Loup Gailly and Mark Adler

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any

damages arising from the use of this software.

Permission is granted to anyone to use this software for any

purpose, including commercial applications, and to alter it and

redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you

must not clai...