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RFC 4737

"Packet Reordering Metrics", November 2006

Canonical URL:
http://www.rfc-editor.org/rfc/rfc4737.txt
This document is also available in this non-normative format: PDF.
Status:
PROPOSED STANDARD
Updated by:
RFC 6248
Authors:
A. Morton
L. Ciavattone
G. Ramachandran
S. Shalunov
J. Perser
Stream:
IETF
Source:
ippm (tsv)

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Abstract

This memo defines metrics to evaluate whether a network has maintained packet order on a packet-by-packet basis. It provides motivations for the new metrics and discusses the measurement issues, including the context information required for all metrics. The memo first defines a reordered singleton, and then uses it as the basis for sample metrics to quantify the extent of reordering in several useful dimensions for network characterization or receiver design. Additional metrics quantify the frequency of reordering and the distance between separate occurrences. We then define a metric oriented toward assessment of reordering effects on TCP. Several examples of evaluation using the various sample metrics are included. An appendix gives extended definitions for evaluating order with packet fragmentation. [STANDARDS-TRACK]


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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