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Point-to-Point Protocol (PPP) initial configuration options (RFC1172)

IP.com Disclosure Number: IPCOM000001985D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 42 page(s) / 44K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Perkins: AUTHOR [+1]

Related Documents

10.17487/RFC1172: DOI

Abstract

This memo specifies the Point-to-Point Protocol (PPP) Initial Configuration Options as a Proposed Standard Protocol for the Internet community. When it becomes a full Standard, this protocol will be recommended for all TCP/IP implementations that communicate over serial links.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group D. Perkins Request for Comments: 1172 CMU R. Hobby UC Davis July 1990

The Point-to-Point Protocol (PPP) Initial Configuration Options

Status of this Memo

This RFC specifies an IAB standards track protocol for the Internet community.

Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol.

This proposal is the 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 Point-to-Point Protocol Working Group chair.

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 composed of

1) a method for encapsulating datagrams over serial links, 2) an extensible Link Control Protocol (LCP), and 3) a family of Network Control Protocols (NCP) for establishing and configuring different network-layer protocols.

The PPP encapsulating scheme, the basic LCP, and an NCP for controlling and establishing the Internet Protocol (IP) (called the IP Control Protocol, IPCP) are defined in The Point-to-Point Protocol (PPP) [1].

This document defines the intial options used by the LCP and IPCP. It also defines a method of Link Quality Monitoring and a simple authentication scheme.

Perkins & Hobby [Page i]

RFC 1172 PPP Initial Options July 1990

Table of Contents

1. Introduction .......................................... 1

2. Link Control Protocol (LCP) Configuration Options ..... 1 2.1 Maximum-Receive-Unit ............................ 2 2.2 Async-Control-Character-Map ..................... 3 2.3 Authentication-Type ............................. 5 2.4 Magic-Number .................................... 7 2.5 Link-Quality-Monitoring ......................... 10 2.6 Protocol-Field-Compression ...................... 11 2.7 Address-and-Control-Field-Compression ........... 13

3. Link Quality Monitoring ............................... 15 3.1 Design Motivation ............................... 15 3.2 Design Overview ................................. 15 3.3 Processes ....................................... 16 3.4 Counters ........................................ 18 3.5 Measurements, Calculations, State Variables ..... 19 3.6 Link-Quality-Report Packet Format ............... 21 3.7 Policy Suggestions .............................. 25 3.8 Example ......................................... 25

4. Password Authentication Protocol ...................... 27 4.1 Packet Format ................................... 27 4.2 Authenticate .................................... 29 4.3 Authenticate-Ack ................................ 31 4.4 Authenticate-Nak ................................ 32

5. IP Control Protocol (IPCP) Configuration Options ...... 33 5.1 IP-Addresses .................................... 34 5.2 Compression-Type ................................ 36

REFERENCES .........................

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