[Docs] [txt|pdf] [Tracker] [WG] [Email] [Diff1] [Diff2] [Nits]

Versions: 00 01 02 03 04 05 06 07 08 RFC 4148

Network Working Group                                         E. Stephan
Internet-Draft                                        France Telecom R&D
Expires: May 31, 2005                                  November 30, 2004


             IP Performance Metrics (IPPM) metrics registry
                draft-ietf-ippm-metrics-registry-08.txt

Status of this Memo

   By submitting this Internet-Draft, I certify that any applicable
   patent or other IPR claims of which I am aware have been disclosed,
   and any of which I become aware will be disclosed, in accordance with
   RFC 3668.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as
   Internet-Drafts.

   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."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on May 31, 2005.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This memo defines a registry for IP Performance Metrics (IPPM).  It
   assigns and registers an initial set of OBJECT IDENTITIES to
   currently defined metrics in the IETF.

   This memo also defines the rules for adding new IP Performance
   Metrics that are defined in the future and for encouraging all IP
   performance metrics to be registered here.

   IANA has been assigned to administer this new registry.




Stephan                   Expires May 31, 2005                  [Page 1]

Internet-Draft      IP Performance Metrics Registry        November 2004


Table of Contents

   1.  The Internet-Standard Management Framework . . . . . . . . . .  3
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  IP Performance Metrics Registry Framework  . . . . . . . . . .  3
   4.  Initial IPPM Metrics Registry Creation . . . . . . . . . . . .  4
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  4
     5.1   Management rules . . . . . . . . . . . . . . . . . . . . .  5
     5.2   Registration template  . . . . . . . . . . . . . . . . . .  5
   6.  Initial IPPM registry definition . . . . . . . . . . . . . . .  6
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
   8.1   Normative References . . . . . . . . . . . . . . . . . . . . 14
   8.2   Informative References . . . . . . . . . . . . . . . . . . . 15
       Author's Address . . . . . . . . . . . . . . . . . . . . . . . 15
       Intellectual Property and Copyright Statements . . . . . . . . 16



































Stephan                   Expires May 31, 2005                  [Page 2]

Internet-Draft      IP Performance Metrics Registry        November 2004


1.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].  Managed objects are accessed via a virtual
   information store, termed the Management Information Base or MIB.
   MIB objects are generally accessed through the Simple Network
   Management Protocol (SNMP).  Objects in the MIB are defined using the
   mechanisms defined in the Structure of Management Information (SMI).
   This memo specifies a MIB module that is compliant to the SMIv2,
   which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579
   [RFC2579] and STD 58, RFC 2580 [RFC2580].

2.  Overview

   This memo defines a registry of the current metrics and a framework
   for the integration of future metrics for the following reasons:

   o  to permit metrics to be clearly referenced by MIB modules or other
      data models;

   o  Metrics identifiers are needed to allow measurement
      interoperability;

   o  As specification of new metrics is a continuous process, special
      care must be taken for the integration of future standardized
      metrics;

   o  Since the intent of the IPPM WG is to cooperate with other
      appropriate standards bodies (or fora) to promote consistent
      metrics, room where other standards bodies can register their
      metrics is provided to encourage IP performance metrics to have
      OBJECT IDENTITIES rooted at a common point;

   o  Similarly, room is provided for  enterprises to register metrics.


3.  IP Performance Metrics Registry Framework

   MIB modules need to be able to precisely reference IPPM Metrics.  The
   registry associates an OBJECT-IDENTITY with each metric.  As an
   example Type-P-One-way-Delay and Type-P-One-way-Delay-Poisson-Stream
   have different OBJECT IDENTITIES.

   The registry has one branch.  Metrics are identified in
   'ianaIppmMetrics' subtree.

   This document defines an initial registry of the existing metrics



Stephan                   Expires May 31, 2005                  [Page 3]

Internet-Draft      IP Performance Metrics Registry        November 2004


   defined in the IPPM WG and the rules to manage the registry.

   Documents defining metrics in the future will include in the IANA
   section the registration information to unambiguously identify these
   metrics.

4.  Initial IPPM Metrics Registry Creation

   The initial registry identifies the metrics currently defined in the
   RFCs produced in the IPPM WG.  To date, the IPPM WG defined 33
   metrics related to 7 topics:

   o  IPPM Metrics for Measuring Connectivity, RFC 2678 [RFC2678];

   o  One-way Delay Metrics, RFC 2679  [RFC2679];

   o  One-way Packet Loss Metrics, RFC 2680 [RFC2680];

   o  Round-trip Delay Metrics, RFC 2681 [RFC2681];

   o  One-way Loss Pattern Sample Metrics, RFC 3357 [RFC3357];

   o  IP Packet Delay Variation Metric, RFC 3393 [RFC3393];

   o  IPPM Metrics for periodic streams, RFC 3432 [RFC3432];

   They are sequentially registered in the node ianaIppmMetrics.

   The naming conventions used for the existing metrics, and encouraged
   for new IPPM metrics, are :

   o  Metrics names comform SMIv2 rules for descriptors defined in the
      section 3.1 of [RFC2578];

   o  The name starts with the prefix 'ietf';

   o  'Type-P' prefix is removed;

   o  '-' are removed;

   o  The letter following a '-' is changed to upper case.


5.  IANA Considerations

   This section describes the rules for the management of the registry
   by IANA.




Stephan                   Expires May 31, 2005                  [Page 4]

Internet-Draft      IP Performance Metrics Registry        November 2004


5.1  Management rules

   Registrations are done sequentially by IANA in the ianaIppmMetrics
   subtree on the bases of 'Specification Required' as defined in
   [RFC2434].

   The reference of the specification must point to a stable document
   including a title, a revision and a date.

   The name always starts with the name of the organization and must
   respect the SMIv2 rules for descriptors defined in the section 3.1 of
   [RFC2578];

   A document that creates new metrics would have an IANA considerations
   section in which it would describe new metrics to register.

   An OBJECT IDENTITY assigned to a metric is definitive and cannot be
   reused.  If a new version of a metric is produced then it is assigned
   with a new name and a new identifier.

5.2  Registration template

   Following is a proposed template to insert in the IANA considerations
   section.  For each metric, that section would instanciate the
   following statement:

      IANA has registed the following metric in the
      IANA-IPPM-METRICS-REGISTRY-MIB:


       aNewMetricName OBJECT-IDENTITY
       STATUS       current
       DESCRIPTION
          "The identifier for a new metric."
       REFERENCE
          "Reference R, section n."
          ::= { ianaIppmMetrics nn }     -- IANA assigns nn














Stephan                   Expires May 31, 2005                  [Page 5]

Internet-Draft      IP Performance Metrics Registry        November 2004


6.  Initial IPPM registry definition


   IANA-IPPM-METRICS-REGISTRY-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       OBJECT-IDENTITY, MODULE-IDENTITY, mib-2
           FROM SNMPv2-SMI;

   ianaIppmMetricsRegistry MODULE-IDENTITY
   LAST-UPDATED "200411300000Z"    -- November 30th, 2004
   ORGANIZATION "IANA"
   CONTACT-INFO "Internet Assigned Numbers Authority

            Postal: ICANN
                4676 Admiralty Way, Suite 330
                Marina del Rey, CA 90292

            Tel:    +1 310 823 9358
            E-Mail: iana@iana.org"

   DESCRIPTION

      "This module defines a registry for IP Performance Metrics.

      Registrations are done sequentially by IANA in the ianaIppmMetrics
      subtree on the bases of 'Specification Required' as defined in
      [RFC2434].

      The reference of the specification must point to a stable document
      including a title, a revision and a date.

      The name always starts with the name of the organization and must
      respect the SMIv2 rules for descriptors defined in the section 3.1
      of [RFC2578];

      A document that creates new metrics would have an IANA
      considerations section in which it would describe new metrics to
      register.

      An OBJECT IDENTITY assigned to a metric is definitive and cannot
      be reused.  If a new version of a metric is produced then it is
      assigned with a new name and a new identifier.

      Copyright (C) The Internet Society (2004).  The initial version of
      this MIB module was published in RFC yyyy; for full legal notices
      see the RFC itself or see:
      http://www.ietf.org/copyrights/ianamib.html.  "



Stephan                   Expires May 31, 2005                  [Page 6]

Internet-Draft      IP Performance Metrics Registry        November 2004


      -- RFC Ed.: replace yyyy with actual RFC number & remove this note


   REVISION      "200411300000Z"    -- November 30th, 2004
   DESCRIPTION
       "Initial version of the IPPM metrics registry module.
        This version published as RFC yyyy."
   ::= { mib-2 XXX }  -- XXX to be assigned by IANA

   ianaIppmMetrics OBJECT-IDENTITY
       STATUS       current
       DESCRIPTION
           "Registration point for IP Performance Metrics."
       ::= { ianaIppmMetricsRegistry 1 }

     --
     -- Registry of the metrics of the IPPM WG RFCs
     --

































Stephan                   Expires May 31, 2005                  [Page 7]

Internet-Draft      IP Performance Metrics Registry        November 2004


     --
     -- RFC 2678 " IPPM Metrics for Measuring Connectivity"
     --

   ietfInstantUnidirConnectivity OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Instantaneous-Unidirectional-Connectivity"
       REFERENCE "RFC2678, section 2."
       ::= { ianaIppmMetrics 1}

   ietfInstantBidirConnectivity OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Instantaneous-Bidirectional-Connectivity"
       REFERENCE "RFC2678, section 3."
       ::= { ianaIppmMetrics 2}

   ietfIntervalUnidirConnectivity OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Interval-Unidirectional-Connectivity"
       REFERENCE "RFC2678, section 4."
       ::= { ianaIppmMetrics 3 }

   ietfIntervalBidirConnectivity OBJECT-IDENTITY
       STATUS current
       DESCRIPTION
           "Type-P-Interval-Bidirectional-Connectivity"
       REFERENCE "RFC2678, section 5."
       ::= { ianaIppmMetrics 4 }

   ietfIntervalTemporalConnectivity OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P1-P2-Interval-Temporal-Connectivity"
       REFERENCE "RFC2678, section 6."
       ::= { ianaIppmMetrics 5 }




   --
   -- RFC 2679 "A One-way Delay Metric for IPPM"
   --

   ietfOneWayDelay OBJECT-IDENTITY
       STATUS     current



Stephan                   Expires May 31, 2005                  [Page 8]

Internet-Draft      IP Performance Metrics Registry        November 2004


       DESCRIPTION
           "Type-P-One-way-Delay"
       REFERENCE "RFC2679, section 3."
       ::= { ianaIppmMetrics 6 }

   ietfOneWayDelayPoissonStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Poisson-Stream"
       REFERENCE "RFC2679, section 4."
       ::= { ianaIppmMetrics 7 }

   ietfOneWayDelayPercentile OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Percentile"
       REFERENCE "RFC2679, section 5.1."
       ::= { ianaIppmMetrics 8 }

   ietfOneWayDelayMedian OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Median"
       REFERENCE "RFC2679, section 5.2."
       ::= { ianaIppmMetrics 9 }

   ietfOneWayDelayMinimum OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Minimum"
       REFERENCE "RFC2679, section 5.3."
       ::= { ianaIppmMetrics 10 }

   ietfOneWayDelayInversePercentile OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Inverse-Percentile"
       REFERENCE "RFC2679, section 5.4."
       ::= { ianaIppmMetrics 11 }












Stephan                   Expires May 31, 2005                  [Page 9]

Internet-Draft      IP Performance Metrics Registry        November 2004


   --
   -- RFC 2680  "One Way Packet Loss Metric for IPPM"
   --

   ietfOneWayPktLoss OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Packet-Loss"
       REFERENCE "RFC2680, section 2."
       ::= { ianaIppmMetrics 12 }

   ietfOneWayPktLossPoissonStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Packet-Loss-Poisson-Stream"
       REFERENCE "RFC2680, section 3."
       ::= { ianaIppmMetrics 13 }

   ietfOneWayPktLossAverage OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Packet-Loss-Average"
       REFERENCE "RFC2680, section 4."
       ::= { ianaIppmMetrics 14 }




   --
   -- RFC2681 "A Round-trip Delay Metric for IPPM"
   --

   ietfRoundTripDelay OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Round-trip-Delay"
       REFERENCE " section 2 of the rfc2681."
       ::= { ianaIppmMetrics 15 }

   ietfRoundTripDelayPoissonStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Round-trip-Delay-Poisson-Stream"
       REFERENCE "RFC2681, section 4."
       ::= { ianaIppmMetrics 16 }

   ietfRoundTripDelayPercentile OBJECT-IDENTITY
       STATUS     current



Stephan                   Expires May 31, 2005                 [Page 10]

Internet-Draft      IP Performance Metrics Registry        November 2004


       DESCRIPTION
           "Type-P-Round-trip-Delay-Percentile"
       REFERENCE "RFC2681, section 4.1."
       ::= { ianaIppmMetrics 17 }

   ietfRoundTripDelayMedian OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Round-trip-Delay-Median"
       REFERENCE "RFC2681, section 4.2."
       ::= { ianaIppmMetrics 18 }

   ietfRoundTripDelayMinimum OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Round-trip-Delay-Minimum"
       REFERENCE "RFC2681, section 4.3."
       ::= { ianaIppmMetrics 19 }

   ietfRoundTripDelayInvPercentile OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-Round-trip-Inverse-Percentile"
       REFERENCE "RFC2681, section 4.4."
       ::= { ianaIppmMetrics 20 }




   --
   -- RFC3357: "One-way Loss Pattern Sample Metrics"
   --

   ietfOneWayLossDistanceStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Loss-Distance-Stream"
       REFERENCE " RFC3357, section 5.4.1."
       ::={ ianaIppmMetrics 21}

   ietfOneWayLossPeriodStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Loss-Period-Stream"
       REFERENCE " RFC3357, section 5.4.2."
       ::={ ianaIppmMetrics 22}

   ietfOneWayLossNoticeableRate OBJECT-IDENTITY



Stephan                   Expires May 31, 2005                 [Page 11]

Internet-Draft      IP Performance Metrics Registry        November 2004


       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Loss-Noticeable-Rate"
       REFERENCE " RFC3357, section 6.1."
       ::= { ianaIppmMetrics 23 }

   ietfOneWayLossPeriodTotal OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Loss-Period-Total"
       REFERENCE " RFC3357, section 6.2."
       ::= { ianaIppmMetrics 24 }

   ietfOneWayLossPeriodLengths OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Loss-Period-Lengths"
       REFERENCE " RFC3357, section 6.3."
       ::= { ianaIppmMetrics 25 }

   ietfOneWayInterLossPeriodLengths OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-Way-Inter-Loss-Period-Lengths"
       REFERENCE " RFC3357, section 6.4."
       ::= { ianaIppmMetrics 26 }




   --
   -- RFC3393:
   -- IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)

   ietfOneWayIpdv OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-ipdv"
       REFERENCE " RFC3393, section 2."
       ::= { ianaIppmMetrics 27 }

   ietfOneWayIpdvPoissonStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-ipdv-Poisson-stream"
       REFERENCE " RFC3393, section 3."
       ::= { ianaIppmMetrics 28 }




Stephan                   Expires May 31, 2005                 [Page 12]

Internet-Draft      IP Performance Metrics Registry        November 2004


   ietfOneWayIpdvPercentile OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
         "Type-P-One-way-ipdv-percentile"
       REFERENCE " RFC3393, section 4.3."
       ::= { ianaIppmMetrics 29 }

   ietfOneWayIpdvInversePercentile OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-ipdv-inverse-percentile"
       REFERENCE " RFC3393, section 4.4."
       ::= { ianaIppmMetrics 30 }

   ietfOneWayIpdvJitter OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-ipdv-jitter"
       REFERENCE " RFC3393, section 4.5."
       ::= { ianaIppmMetrics 31 }

   ietfOneWayPeakToPeakIpdv OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-peak-to-peak-ipdv"
       REFERENCE " RFC3393, section 4.6."
       ::= { ianaIppmMetrics 32 }



   --
   -- RFC3432: "Network performance measurement with periodic streams"
   --

   ietfOneWayDelayPeriodicStream OBJECT-IDENTITY
       STATUS     current
       DESCRIPTION
           "Type-P-One-way-Delay-Periodic-Stream"
       REFERENCE " RFC3432, section 4."
       ::= { ianaIppmMetrics 33 }

   END









Stephan                   Expires May 31, 2005                 [Page 13]

Internet-Draft      IP Performance Metrics Registry        November 2004


7.  Security Considerations

   This module does not define any management objects.  Instead, it
   assigns a set of OBJECT-IDENTITIES which may be used by other MIB
   modules to identify specific IP Performance Metrics.

   Meaningful security considerations can only be written in the MIB
   modules that define management objects.  This document has therefore
   no impact on the security of the Internet.

8.  References

8.1  Normative References

   [RFC2434]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 2434,
              October 1998.

   [RFC2578]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Structure of
              Management Information Version 2 (SMIv2)", STD 58, RFC
              2578, April 1999.

   [RFC2678]  Mahdavi, J. and V. Paxson, "IPPM Metrics for Measuring
              Connectivity", RFC 2678, September 1999.

   [RFC2679]  Almes, G., Kalidindi, S. and M. Zekauskas, "A One-way
              Delay Metric for IPPM", RFC 2679, September 1999.

   [RFC2680]  Almes, G., Kalidindi, S. and M. Zekauskas, "A One-way
              Packet Loss Metric for IPPM", RFC 2680, September 1999.

   [RFC2681]  Almes, G., Kalidindi, S. and M. Zekauskas, "A Round-trip
              Delay Metric for IPPM", RFC 2681, September 1999.

   [RFC3357]  Koodli, R. and R. Ravikanth, "One-way Loss Pattern Sample
              Metrics", RFC 3357, August 2002.

   [RFC3393]  Demichelis, C. and P. Chimento, "IP Packet Delay Variation
              Metric for IP Performance Metrics (IPPM)", RFC 3393,
              November 2002.

   [RFC3432]  Raisanen, V., Grotefeld, G. and A. Morton, "Network
              performance measurement with periodic streams", RFC 3432,
              November 2002.






Stephan                   Expires May 31, 2005                 [Page 14]

Internet-Draft      IP Performance Metrics Registry        November 2004


8.2  Informative References

   [RFC2330]  Paxson, V., Almes, G., Mahdavi, J. and M. Mathis,
              "Framework for IP Performance Metrics", RFC 2330, May
              1998.

   [RFC2579]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Textual
              Conventions for SMIv2", STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D. and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC3410]  Case, J., Mundy, R., Partain, D. and B. Stewart,
              "Introduction and Applicability Statements for
              Internet-Standard Management Framework", RFC 3410,
              December 2002.


Author's Address

   Stephan Emile
   France Telecom R & D
   2 avenue Pierre Marzin
   Lannion,   F-22307

   Fax:   +33 2 96 05 18 52
   EMail: emile.stephan@francetelecom.com






















Stephan                   Expires May 31, 2005                 [Page 15]

Internet-Draft      IP Performance Metrics Registry        November 2004


Intellectual Property Statement

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.


Disclaimer of Validity

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Copyright Statement

   Copyright (C) The Internet Society (2004).  This document is subject
   to the rights, licenses and restrictions contained in BCP 78, and
   except as set forth therein, the authors retain all their rights.


Acknowledgment

   Funding for the RFC Editor function is currently provided by the
   Internet Society.




Stephan                   Expires May 31, 2005                 [Page 16]


Html markup produced by rfcmarkup 1.107, available from http://tools.ietf.org/tools/rfcmarkup/