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A packet based method for passive performance monitoring
draft-tempia-opsawg-p3m-04

Document type: Active Internet-Draft (individual)
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Last updated: 2014-02-13
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Network Working Group                                         A. Capello
Internet-Draft                                               M. Cociglio
Intended status: Experimental                             L. Castaldelli
Expires: August 17, 2014                                  Telecom Italia
                                                         A. Tempia Bonda

                                                       February 13, 2014

        A packet based method for passive performance monitoring
                     draft-tempia-opsawg-p3m-04.txt

Abstract

   This document describes a passive method to perform packet loss,
   delay and jitter measurements on live traffic.  Implementation and
   deployment details are also explained in order to clarify how the
   tools and features currently available on existing routing platforms
   can be used to implement the method.  This method has been invented
   and engineered in Telecom Italia and it's currently being used in
   Telecom Italia's network.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 17, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Capello, et al.          Expires August 17, 2014                [Page 1]
Internet-Draft  Method for passive performance monitoring  February 2014

   carefully, as they describe your rights and restrictions with respect
   to this document.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Overview of the method  . . . . . . . . . . . . . . . . . . .   4
   3.  Detailed description of the method  . . . . . . . . . . . . .   5
     3.1.  Packet loss measurement . . . . . . . . . . . . . . . . .   5
     3.2.  One-way delay measurement . . . . . . . . . . . . . . . .   9
       3.2.1.  Average delay . . . . . . . . . . . . . . . . . . . .  10
     3.3.  Delay variation measurement . . . . . . . . . . . . . . .  11
   4.  Implementation and deployment . . . . . . . . . . . . . . . .  11
     4.1.  Coloring the packets  . . . . . . . . . . . . . . . . . .  13
     4.2.  Counting the packets  . . . . . . . . . . . . . . . . . .  14
     4.3.  Collecting data and calculating packet loss . . . . . . .  15
   5.  Compliance with RFC6390 guidelines  . . . . . . . . . . . . .  15
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   7.  Conclusions . . . . . . . . . . . . . . . . . . . . . . . . .  17
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     10.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   Nowadays, most of the traffic in Service Providers' networks carries
   multimedia content.  Video contents are highly sensitive to packet
   loss [RFC2680], while interactive contents are sensitive to delay
   [RFC2679], and jitter [RFC3393].

   In front of this scenario, Service Providers need methodologies and
   tools to monitor and measure network performances with an adequate
   accuracy, in order to constantly control the quality of experience
   perceived by their customers.  On the other hand, performance
   monitoring provides useful information for improving network
   management (e.g.  isolation of network problems, troubleshooting,
   etc.).

   A lot of work related to OAM, that includes also performance
   monitoring techniques, has been done by Standards Developing
   Organizations: [I-D.ietf-opsawg-oam-overview] provides a good
   overview of existing OAM mechanisms defined in IETF, ITU-T and IEEE.
   Considering IETF, a lot of work has been done on fault detection and

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