Browse Prior Art Database

The Point-to-Point Protocol (PPP) for the Transmission of Multi-protocol Datagrams over Point-to-Point Links (RFC1331)

IP.com Disclosure Number: IPCOM000002154D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 69 page(s) / 77K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

W. Simpson: AUTHOR

Related Documents

10.17487/RFC1331: DOI

Abstract

This document defines the PPP encapsulation scheme, together with the PPP Link Control Protocol (LCP), an extensible option negotiation protocol which is able to negotiate a rich assortment of configuration parameters and provides additional management functions. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 4% of the total text.

Network Working Group W. Simpson Request for Comments: 1331 Daydreamer Obsoletes: RFCs 1171, 1172 May 1992

The Point-to-Point Protocol (PPP) for the Transmission of Multi-protocol Datagrams over Point-to-Point Links

Status of this Memo

This RFC specifies an IAB standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Abstract

The Point-to-Point Protocol (PPP) provides a method for transmitting datagrams over serial point-to-point links. PPP is comprised of three main components:

1. A method for encapsulating datagrams over serial links.

2. A Link Control Protocol (LCP) for establishing, configuring, and testing the data-link connection.

3. A family of Network Control Protocols (NCPs) for establishing and configuring different network-layer protocols.

This document defines the PPP encapsulation scheme, together with the PPP Link Control Protocol (LCP), an extensible option negotiation protocol which is able to negotiate a rich assortment of configuration parameters and provides additional management functions.

This RFC is a product of the Point-to-Point Protocol Working Group of the Internet Engineering Task Force (IETF). Comments on this memo should be submitted to the ietf-ppp@ucdavis.edu mailing list.

Simpson [Page i]

RFC 1331 Point-to-Point Protocol May 1992

Table of Contents

1. Introduction .......................................... 1 1.1 Specification of Requirements ................... 3 1.2 Terminology ..................................... 3

2. Physical Layer Requirements ........................... 4

3. The Data Link Layer ................................... 5 3.1 Frame Format .................................... 6

4. PPP Link Operation .................................... 10 4.1 Overview ........................................ 10 4.2 Phase Diagram ................................... 10 4.3 Link Dead (physical-layer not ready) ............ 10 4.4 Link Establishment Phase ........................ 11 4.5 Authentication Phase ............................ 11 4.6 Network-Layer Protocol Phase .................... 12 4.7 Link Termination Phase .......................... 12

5. The Option Negotiation Automaton ...................... 14 5.1 State Diagram ................................... 15 5.2 State Transition Table .......................... 16 5.3 States .......................................... 18 5.4 Events .......................................... 20 5.5 Actions ......................................... 24 5.6 Loop Avoidance .................................. 26 5.7 Counters and Timers ............................. 27

6. LCP Packet Formats .................................... 28 6.1 Configure-Request ............................... 30 6.2 Configure-Ack ................................... 31 6.3 Configure-Nak...

Processing...
Loading...