Browse Prior Art Database

PPP Link Quality Monitoring (RFC1989)

IP.com Disclosure Number: IPCOM000004202D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 11 page(s) / 27K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

W. Simpson: 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 11% of the total text.

Network Working Group W. Simpson

Request for Comments: 1989 Daydreamer

Obsoletes: 1333 August 1996

Category: Standards Track

PPP Link Quality Monitoring

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, which allows

negotiation of a Quality Protocol for continuous monitoring of the

viability of the link.

This document defines a protocol for generating Link-Quality-Reports.

Table of Contents

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

2. Link Quality Monitoring ............................... 2

2.1 Design Motivation ............................... 2

2.2 Counters ........................................ 3

2.3 Counting Packets and Octets ..................... 4

2.4 Processes ....................................... 5

2.5 Configuration Option Format ..................... 6

2.6 Packet Format ................................... 8

2.7 Transmission of Reports ......................... 12

2.8 Calculations .................................... 12

2.9 Failure Detection ............................... 13

2.10 Policy Suggestions .............................. 14

SECURITY CONSIDERATIONS ...................................... 15

ACKNOWLEDGEMENTS ............................................. 15

REFERENCES ................................................... 15

CHAIR'S ADDRESS .............................................. 16

AUTHOR'S ADDRESS ............................................. 16

1. Introduction

In order to establish communications over a point-to-point link, each

end of the PPP link must first send LCP packets to configure the data

link during Link Establishment phase. During the Authentication and

Network-Layer Protocol phases, the link may be tested to determine if

quality is sufficient for operation. This testing is completely

optional.

If an implementation desires that the peer use some specific link

quality monitoring protocol, then it MUST negotiate the use of that

protocol using the Quality-Protocol Configuration Option during Link

Establishment phase.

The negotiation mechanism is independent in each direction. However,

if the peer agrees to send Quali...