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The PPP Compression Control Protocol (CCP) (RFC1962)

IP.com Disclosure Number: IPCOM000004187D
Original Publication Date: 1996-Jun-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 9 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Rand: AUTHOR

Related Documents

10.17487/RFC1962: DOI

Abstract

This document defines a method for negotiating data compression over PPP links. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 19% of the total text.

Network Working Group D. Rand Request for Comments: 1962 Novell Category: Standards Track June 1996

The PPP Compression Control Protocol (CCP)

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. 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. PPP also defines an extensible Link Control Protocol.

This document defines a method for negotiating data compression over PPP links.

Table of Contents

1. Introduction .......................................... 1 2. Compression Control Protocol (CCP) .................... 2 2.1 Sending Compressed Datagrams .................... 3 3. Additional Packets .................................... 4 3.1 Reset-Request and Reset-Ack ..................... 4 4. CCP Configuration Options ............................. 5 4.1 Proprietary Compression OUI ..................... 7 4.2 Other Compression Types ......................... 8 SECURITY CONSIDERATIONS ...................................... 9 REFERENCES ................................................... 9 ACKNOWLEDGEMENTS ............................................. 9 CHAIR’S ADDRESS .............................................. 9 AUTHOR’S ADDRESS ............................................. 9

1. Introduction

In order to establish communications over a PPP link, each end of the link must first send LCP packets to configure and test the data link during Link Establishment phase. After the link has been established, optional facilities may be negotiated as needed.

Rand Standards Track [Page 1]

RFC 1962 PPP Compression June 1996

One such facility is data compression. A wide variety of compression methods may be negotiated, although typically only one method is used in each direction of the link.

A different compression algorithm may be negotiated in each direction, for speed, cost, memory or other considerations, or only one direction may be compressed.

2. Compression Control Protocol (CCP)

The Compression Control Protocol (CCP) is responsible for configuring, enabling, and disabling data compression algorithms on both ends of the point-to-point link. It is also used to signal a failure of the compression/decompression mechanism in a reliable manner.

CCP uses the same packet exchange mechanism as the Link Control Protocol (LCP). CCP packets may not be exchanged until PPP has reached the Network-Layer Protocol phase. CCP packets received before this phase is reached should be silently discarded.

The Compression Control Protocol is exactly the same as the Link Control Protocol [1] with the following exceptions:

Frame Modifications

The packet may utilize any modifications to the ba...

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