Spatial Composition of Metrics
RFC 6049
| Document | Type |
RFC - Proposed Standard
(January 2011; No errata)
Updated by RFC 6248
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6049 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Lars Eggert | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) A. Morton
Request for Comments: 6049 AT&T Labs
Category: Standards Track E. Stephan
ISSN: 2070-1721 France Telecom Orange
January 2011
Spatial Composition of Metrics
Abstract
This memo utilizes IP performance metrics that are applicable to both
complete paths and sub-paths, and it defines relationships to compose
a complete path metric from the sub-path metrics with some accuracy
with regard to the actual metrics. This is called "spatial
composition" in RFC 2330. The memo refers to the framework for
metric composition, and provides background and motivation for
combining metrics to derive others. The descriptions of several
composed metrics and statistics follow.
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/rfc6049.
Morton & Stephan Standards Track [Page 1]
RFC 6049 Spatial Composition January 2011
Copyright Notice
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Morton & Stephan Standards Track [Page 2]
RFC 6049 Spatial Composition January 2011
Table of Contents
1. Introduction ....................................................4
1.1. Motivation .................................................6
1.2. Requirements Language ......................................6
2. Scope and Application ...........................................6
2.1. Scope of Work ..............................................6
2.2. Application ................................................7
2.3. Incomplete Information .....................................7
3. Common Specifications for Composed Metrics ......................8
3.1. Name: Type-P ...............................................8
3.1.1. Metric Parameters ...................................8
3.1.2. Definition and Metric Units .........................9
3.1.3. Discussion and Other Details ........................9
3.1.4. Statistic ...........................................9
3.1.5. Composition Function ................................9
3.1.6. Statement of Conjecture and Assumptions ............10
3.1.7. Justification of the Composition Function ..........10
3.1.8. Sources of Deviation from the Ground Truth .........10
3.1.9. Specific Cases where the Conjecture Might Fail .....11
3.1.10. Application of Measurement Methodology ............12
4. One-Way Delay Composed Metrics and Statistics ..................12
4.1. Name: Type-P-Finite-One-way-Delay-<Sample>-Stream .........12
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