RFC 1989 (rfc1989) - Page 1 of 16

PPP Link Quality Monitoring

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





Simpson                     Standards Track