Network Working Group A. Morton
Internet-Draft AT&T Labs
Intended status: Informational September 28, 2015
Expires: March 31, 2016

Examples of LMAP Objects using IPPM Metrics and Protocols


In order to examine the completeness and coverage of the LMAP info and data models, we present examples expressing information from IP Performance Metric working group metrics and protocols, and the Performance Metrics Registry.

Requirements Language

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].

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

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 March 31, 2016.

Copyright Notice

Copyright (c) 2015 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 ( 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.

Table of Contents

1. Introduction

The Large-scale Measurement of Broadband Performance (LMAP) working group has completed a Framework [RFC7594] and Use cases, and now proceeds with development of an information model [I-D.ietf-lmap-information-model] and data model.

The IETF IP Performance Metrics (IPPM) working group first created a framework for metric development in [RFC2330]. This framework has largely stood the test of time and enabled development of many fundamental metrics. It has been updated once in the area of metric composition [RFC5835], and again in several areas related to active stream measurement of modern networks with reactive propoerties [RFC7312]. The Working Group has developed an extensive set of Standards Track Metrics and Measurment Protocols. Among the work especially relevant to LMAP is the development of a Performance Metrics Registry [I-D.ietf-ippm-metric-registry], and a proposal for the initial regsitry contents [I-D.morton-ippm-initial-registry].

This memo is orgainzed into sections that present an example of LMAP Control and Reporting by populating the various information model objects for measurement Tasks and Reporting Tasks (and eventually Schedule, Event, Action, etc).

The first example is a UDP Round Trip Latency Metric.

2. Scope and Purpose

The purpose of this memo is to examine the features and capabilities of the LMAP information model [I-D.ietf-lmap-information-model] by populating the models with example data intended to enable measurement of IPPM metrics.

The scope is to create the examples for Active Metrics and their Methods of Measurement, as defined in the IPPM literature of Standards Track Metrics. Specifically, Metrics in the proposed initial contents for the Performance Metrics Registry [I-D.ietf-ippm-metric-registry] contined in [I-D.ietf-ippm-metric-registry] are the primary focus, along with existing standards track measurement protocols developed in IPPM [RFC4656] [RFC5357].

3. UDP Round Trip Latency

This draft presents information in a conceptual form. Safeguarding correct syntax is a collosal non-goal in the early drafts.

3.1. Measurement Task Capabilities

Measurement Capability [
   Measurement Protocol [
       Protocol Roles [ ]
   Registry URI  [
       Method Roles [ ]
so, an example would be

Measurement Capability [
    TWAMP [
       Control-Client; Session-Sender; Server; Session-Reflector;
    Prefix:Act_IP_UDP_Round-trip_Delay_95th-percentile_Poisson [
       Src; Dst;
    ... more URIs and Roles ...
for a fully-capable MA.

3.2. Instruction Object

3.3.1.  Definition of ma-instruction-obj
     object {
         ma-task-obj         ma-instruction-tasks<0..*>;
         ma-channel-obj      ma-report-channels<0..*>;
         ma-schedule-obj     ma-instruction-schedules<0..*>;
         ma-suppression-obj  ma-suppression;
     } ma-instruction-obj;

3.3. Measurement Task

3.9.1.  Definition of ma-task-obj
     object {
         string              ma-task-name;
           task-name: UDP_RT_Metrics_001;
         uri                 ma-task-registry-entries<1..*>;
           Prefix: Act_IP_UDP_Round-trip_Delay_95th-percentile_Poisson;
           Prefix: Act_IP_UDP_Round-trip_Delay_Mean_Poisson;
        [ma-option-obj       ma-task-options<0..*>];
           option-role: Src;  option-meas_point: mp100;
           option-measurement_protocol: TWAMP;
           option-meas_protocol_roles: Control-Client; Session-Sender;
           option-T0:  0;  option-lambda: 1 second;
           option-Tf:  15 min; option-truncate: 30 seconds;
        [boolean             ma-task-suppress-by-default;]
           suppress: true;
        [string              ma-task-cycle-id;]
           cycle-id: Cycle_001;
     } ma-task-obj;

Prefix = urn:ietf:params:performance:metric

3.4. Report

3.6.1.  Definition of ma-report-obj

     object {
         datetime            ma-report-date;
        [uuid                ma-report-agent-id;]
        [string              ma-report-group-id;]
        [ma-report-task-obj  ma-report-tasks<0..*>];
     } ma-report-obj;

3.5. Report Task

3.6.2.  Definition of ma-report-task-obj
     object {
         string              ma-report-task-name;
            task-name: UDP_RT_Metrics_REPORT_001;
        [uri                 ma-report-task-registry-entries<1..*>;]
           Prefix: Act_IP_UDP_Round-trip_Delay_95th-percentile_Poisson;
           Prefix: Act_IP_UDP_Round-trip_Delay_Mean_Poisson;
        [ma-option-obj       ma-report-task-options<0..*>];
           option-role: Src;  option-meas_point: mp100;
           option-measurement_protocol: TWAMP;
           option-meas_protocol_roles: Control-Client; Session-Sender;
           option-T0:  0;
           option-Tf:  15 minutes;
        [ma-option-obj       ma-report-task-action-options<0..*>];
        [string              ma-report-task-cycle-id;]
           cycle-id: Cycle_001;
        [string              ma-report-task-column-labels<0..*>;]
           label: Mean; label: 95%-tile; 
        [ma-report-row-obj   ma-report-task-rows<0..*>;]
           row(0): 0.25; 0.34;
     } ma-report-task-obj; 

3.6. Schedule


4. Security Considerations

The security considerations that apply to any active measurement of live paths are relevant here as well. See [RFC4656] and [RFC5357].

When considering privacy of those involved in measurement or those whose traffic is measured, the sensitive information available to potential observers is greatly reduced when using active techniques which are within this scope of work. Passive observations of user traffic for measurement purposes raise many privacy issues. We refer the reader to the privacy considerations described in the Large Scale Measurement of Broadband Performance (LMAP) Framework [RFC7594], which covers active and passive techniques.

5. IANA Considerations

This memo makes no requests of IANA.

6. Acknowledgements

The authors thank ...

7. References

7.1. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997.
[RFC2330] Paxson, V., Almes, G., Mahdavi, J. and M. Mathis, "Framework for IP Performance Metrics", RFC 2330, DOI 10.17487/RFC2330, May 1998.
[RFC2679] Almes, G., Kalidindi, S. and M. Zekauskas, "A One-way Delay Metric for IPPM", RFC 2679, DOI 10.17487/RFC2679, September 1999.
[RFC3432] Raisanen, V., Grotefeld, G. and A. Morton, "Network performance measurement with periodic streams", RFC 3432, DOI 10.17487/RFC3432, November 2002.
[RFC4656] Shalunov, S., Teitelbaum, B., Karp, A., Boote, J. and M. Zekauskas, "A One-way Active Measurement Protocol (OWAMP)", RFC 4656, DOI 10.17487/RFC4656, September 2006.
[RFC5357] Hedayat, K., Krzanowski, R., Morton, A., Yum, K. and J. Babiarz, "A Two-Way Active Measurement Protocol (TWAMP)", RFC 5357, DOI 10.17487/RFC5357, October 2008.
[RFC5835] Morton, A. and S. Van den Berghe, "Framework for Metric Composition", RFC 5835, DOI 10.17487/RFC5835, April 2010.
[RFC6049] Morton, A. and E. Stephan, "Spatial Composition of Metrics", RFC 6049, DOI 10.17487/RFC6049, January 2011.
[RFC6576] Geib, R., Morton, A., Fardid, R. and A. Steinmitz, "IP Performance Metrics (IPPM) Standard Advancement Testing", BCP 176, RFC 6576, DOI 10.17487/RFC6576, March 2012.
[RFC6703] Morton, A., Ramachandran, G. and G. Maguluri, "Reporting IP Network Performance Metrics: Different Points of View", RFC 6703, DOI 10.17487/RFC6703, August 2012.
[RFC7312] Fabini, J. and A. Morton, "Advanced Stream and Sampling Framework for IP Performance Metrics (IPPM)", RFC 7312, DOI 10.17487/RFC7312, August 2014.

7.2. Informative References

[EEAW] Pentikousis, K., Piri, E., Pinola, J., Fitzek, F., Nissilä, T. and I. Harjula, "Empirical Evaluation of VoIP Aggregation over a Fixed WiMAX Testbed", Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks and communities (TridentCom '08), March 2008.
[I-D.ietf-ippm-metric-registry] Bagnulo, M., Claise, B., Eardley, P., Morton, A. and A. Akhter, "Registry for Performance Metrics", Internet-Draft draft-ietf-ippm-metric-registry-04, July 2015.
[I-D.ietf-lmap-information-model] Burbridge, T., Eardley, P., Bagnulo, M. and J. Schönwälder, "Information Model for Large-Scale Measurement Platforms (LMAP)", Internet-Draft draft-ietf-lmap-information-model-06, July 2015.
[I-D.morton-ippm-initial-registry] Morton, A., Bagnulo, M., Eardley, P. and K. D'Souza, "Initial Performance Metric Registry Entries", Internet-Draft draft-morton-ippm-initial-registry-00, July 2015.
[IBD] Fabini, J., Karner, W., Wallentin, L. and T. Baumgartner, "The Illusion of Being Deterministic – Application-Level Considerations on Delay in 3G HSPA Networks", Lecture Notes in Computer Science, Springer, Volume 5550, 2009, pp 301-312 , May 2009.
[IRR] Fabini, J., Wallentin, L. and P. Reichl, "The Importance of Being Really Random: Methodological Aspects of IP-Layer 2G and 3G Network Delay Assessment", ICC'09 Proceedings of the 2009 IEEE International Conference on Communications, doi: 10.1109/ICC.2009.5199514, June 2009.
[Mat98] Mathis, M., "Empirical Bulk Transfer Capacity", IP Performance Metrics Working Group report in Proceeding of the Forty Third Internet Engineering Task Force, Orlando, FL., December 1998.
[RFC3148] Mathis, M. and M. Allman, "A Framework for Defining Empirical Bulk Transfer Capacity Metrics", RFC 3148, DOI 10.17487/RFC3148, July 2001.
[RFC6808] Ciavattone, L., Geib, R., Morton, A. and M. Wieser, "Test Plan and Results Supporting Advancement of RFC 2679 on the Standards Track", RFC 6808, DOI 10.17487/RFC6808, December 2012.
[RFC6985] Morton, A., "IMIX Genome: Specification of Variable Packet Sizes for Additional Testing", RFC 6985, DOI 10.17487/RFC6985, July 2013.
[RFC7594] Eardley, P., Morton, A., Bagnulo, M., Burbridge, T., Aitken, P. and A. Akhter, "A Framework for Large-Scale Measurement of Broadband Performance (LMAP)", RFC 7594, DOI 10.17487/RFC7594, September 2015.
[RRC] Perälä, P., Barbuzzi, A., Boggia, G. and K. Pentikousis, "Theory and Practice of RRC State Transitions in UMTS Networks", IEEE Globecom 2009 Workshops doi: 10.1109/GLOCOMW.2009.5360763, November 2009.
[TSRC] Fabini, J. and M. Abmayer, "Delay Measurement Methodology Revisited: Time-slotted Randomness Cancellation", IEEE Transactions on Instrumentation and Measurement doi:10.1109/TIM.2013.2263914, October 2013.

Author's Address

Al Morton AT&T Labs 200 Laurel Avenue South Middletown, NJ 07748 USA Phone: +1 732 420 1571 Fax: +1 732 368 1192 EMail: URI: