Active and Passive Metrics and Methods (and everything in-between, or Hybrid)
draft-ietf-ippm-active-passive-01
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Network Working Group A. Morton
Internet-Draft AT&T Labs
Intended status: Informational September 6, 2015
Expires: March 9, 2016
Active and Passive Metrics and Methods (and everything in-between, or
Hybrid)
draft-ietf-ippm-active-passive-01
Abstract
This memo provides clear definitions for Active and Passive
performance assessment. The construction of Metrics and Methods can
be described as Active or Passive. Some methods may use a subset of
both active and passive attributes, and we refer to these as Hybrid
Methods.
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 March 9, 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
(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
Morton Expires March 9, 2016 [Page 1]
Internet-Draft Active and Passive September 2015
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . 3
3. Terms and Definitions . . . . . . . . . . . . . . . . . . . . 3
3.1. Performance Metric . . . . . . . . . . . . . . . . . . . 3
3.2. Method of Measurement . . . . . . . . . . . . . . . . . . 4
3.3. Observation Point . . . . . . . . . . . . . . . . . . . . 4
3.4. Active Methods . . . . . . . . . . . . . . . . . . . . . 4
3.5. Active Metric . . . . . . . . . . . . . . . . . . . . . . 4
3.6. Passive Methods . . . . . . . . . . . . . . . . . . . . . 5
3.7. Passive Metric . . . . . . . . . . . . . . . . . . . . . 5
3.8. Hybrid Methods and Metrics . . . . . . . . . . . . . . . 6
4. Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1. Graphical Representation . . . . . . . . . . . . . . . . 7
4.2. Discussion of PDM . . . . . . . . . . . . . . . . . . . . 9
4.3. Discussion of "Coloring" Method . . . . . . . . . . . . . 10
5. Security considerations . . . . . . . . . . . . . . . . . . . 10
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.1. Normative References . . . . . . . . . . . . . . . . . . 11
8.2. Informative References . . . . . . . . . . . . . . . . . 11
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction
The adjectives "active" and "passive" have been used for many years
to distinguish two different classes of Internet performance
assessment. The first Passive and Active Measurement (PAM)
Conference was held in 2000, but the earliest proceedings available
on-line are from the second PAM conference in 2001
[https://www.ripe.net/ripe/meetings/pam-2001].
The notions of "active" and "passive" are well-established. In
general:
An Active metric or method depends on a dedicated measurement
packet stream and observations of the stream.
A Passive metric or method depends *solely* on observation of one
or more existing packet streams. The streams only serve
measurement when they are observed for that purpose, and are
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