A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Performance Metrics Working Group of the IETF.
Title : Model Based Bulk Performance Metrics
Authors : Matt Mathis
Al Morton
Filename : draft-ietf-ippm-model-based-metrics-02.txt
Pages : 42
Date : 2014-02-14
Abstract:
We introduce a new class of model based metrics designed to determine
if an end-to-end Internet path can meet predefined transport
performance targets by applying a suite of IP diagnostic tests to
successive subpaths. The subpath-at-a-time tests are designed to
accurately detect if any subpath will prevent the full end-to-end
path from meeting the specified target performance. Each IP
diagnostic test consists of a precomputed traffic pattern and a
statistical criteria for evaluating packet delivery.
The IP diagnostics tests are based on traffic patterns that are
precomputed to mimic TCP or other transport protocol over a long path
but are independent of the actual details of the subpath under test.
Likewise the success criteria depends on the target performance and
not the actual performance of the subpath. This makes the
measurements open loop, eliminating nearly all of the difficulties
encountered by traditional bulk transport metrics.
This document does not fully define diagnostic tests, but provides a
framework for designing suites of diagnostics tests that are tailored
the confirming the target performance.
By making the tests open loop, we eliminate standards congestion
control equilibrium behavior, which otherwise causes every measured
parameter to be sensitive to every component of the system. As an
open loop test, various measurable properties become independent, and
potentially subject to an algebra enabling several important new
uses.
Interim DRAFT Formatted: Fri Feb 14 14:07:33 PST 2014
The IETF datatracker status page for this draft is:
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