Basic Telephony SIP End-to-End Performance Metrics
RFC 6076

 
Document Type RFC - Proposed Standard (January 2011; No errata)
Last updated 2013-03-02
Replaces draft-malas-performance-metrics
Stream IETF
Formats plain text pdf html
Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 6076 (Proposed Standard)
Telechat date
Responsible AD Dan Romascanu
Send notices to pmol-chairs@ietf.org, draft-ietf-pmol-sip-perf-metrics@ietf.org, vkg@alcatel-lucent.com
Internet Engineering Task Force (IETF)                          D. Malas
Request for Comments: 6076                                     CableLabs
Category: Standards Track                                      A. Morton
ISSN: 2070-1721                                                AT&T Labs
                                                            January 2011

           Basic Telephony SIP End-to-End Performance Metrics

Abstract

   This document defines a set of metrics and their usage to evaluate
   the performance of end-to-end Session Initiation Protocol (SIP) for
   telephony services in both production and testing environments.  The
   purpose of this document is to combine a standard set of common
   metrics, allowing interoperable performance measurements, easing the
   comparison of industry implementations.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6076.

Malas & Morton               Standards Track                    [Page 1]
RFC 6076           SIP End-to-End Performance Metrics       January 2011

Copyright Notice

   Copyright (c) 2011 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
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Malas & Morton               Standards Track                    [Page 2]
RFC 6076           SIP End-to-End Performance Metrics       January 2011

Table of Contents

   1. Introduction and Scope ..........................................3
   2. Terminology .....................................................4
   3. Time Interval Measurement and Reporting .........................5
   4. SIP Performance Metrics .........................................7
      4.1. Registration Request Delay (RRD) ...........................8
      4.2. Ineffective Registration Attempts (IRAs) ...................9
      4.3. Session Request Delay (SRD) ...............................10
           4.3.1. Successful Session Setup SRD .......................11
           4.3.2. Failed Session Setup SRD ...........................12
      4.4. Session Disconnect Delay (SDD) ............................13
      4.5. Session Duration Time (SDT) ...............................15
           4.5.1. Successful Session Duration SDT ....................15
           4.5.2. Failed Session Completion SDT ......................17
      4.6. Session Establishment Ratio (SER) .........................18
      4.7. Session Establishment Effectiveness Ratio (SEER) ..........19
      4.8. Ineffective Session Attempts (ISAs) .......................20
      4.9. Session Completion Ratio (SCR) ............................21
   5. Additional Considerations ......................................23
      5.1. Metric Correlations .......................................23
      5.2. Back-to-Back User Agent (B2BUA) ...........................23
      5.3. Authorization and Authentication ..........................23
      5.4. Forking ...................................................24
      5.5. Data Collection ...........................................24
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