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PPP LZS-DCP Compression Protocol (LZS-DCP) (RFC1967)

IP.com Disclosure Number: IPCOM000004255D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 15 page(s) / 37K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Schneider & R. Friend: 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 document.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group K. Schneider

Request for Comments: 1967 ADTRAN, Inc.

Category: Informational R. Friend

Stac Technology

August 1996

PPP LZS-DCP Compression Protocol (LZS-DCP)

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 Stac LZS data compression

algorithm for compressing PPP encapsulated packets, using a DCP

header [6]. This protocol is an enhanced version of the non-DCP

(Option 17) PPP Stac LZS compression protocol [5], and will be

referred to as the LZS-DCP Compression Protocol.

Table of Contents

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

1.1 Licensing ....................................... 3

1.2 Specification of Requirements ................... 3

1.3 Terminology ..................................... 3

2. LZS-DCP Packets ....................................... 4

2.1 Example LZS-DCP Packets ......................... 5

2.2 Padding ......................................... 6

2.3 Reliabliity and Squencing ....................... 6

2.4 Data Expansion .................................. 6

2.5 Packet Format ................................... 7

2.5.1 PPP Protocol .................................... 7

2.5.2 DCP-Header ...................................... 8

2.5.3 History Number .................................. 9

2.5.4 Sequence Number ................................. 9

2.5.5 Data ............................................ 10

2.5.6 Longitudinal Check Byte ......................... 10

2.5.7 Compressed Data ................................. 11

3. Sending Compressed Datagrams ..................... 11

3.1 Transmitter Process ............................. 11

3.2 Receiver Process ................................ 12

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