datatracker.ietf.org
Sign in
Version 5.6.2.p1, 2014-07-22
Report a bug

IMIX Genome: Specification of Variable Packet Sizes for Additional Testing
RFC 6985

Internet Engineering Task Force (IETF)                         A. Morton
Request for Comments: 6985                                     AT&T Labs
Category: Informational                                        July 2013
ISSN: 2070-1721

          IMIX Genome: Specification of Variable Packet Sizes
                         for Additional Testing

Abstract

   Benchmarking methodologies have always relied on test conditions with
   constant packet sizes, with the goal of understanding what network
   device capability has been tested.  Tests with a constant packet size
   reveal device capabilities but differ significantly from the
   conditions encountered in operational deployment, so additional tests
   are sometimes conducted with a mixture of packet sizes, or "IMIX"
   ("Internet Mix").  The mixture of sizes a networking device will
   encounter is highly variable and depends on many factors.  An IMIX
   suited for one networking device and deployment will not be
   appropriate for another.  However, the mix of sizes may be known, and
   the tester may be asked to augment the fixed-size tests.  To address
   this need and the perpetual goal of specifying repeatable test
   conditions, this document defines a way to specify the exact
   repeating sequence of packet sizes from the usual set of fixed sizes
   and from other forms of mixed-size specification.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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/rfc6985.

Morton                        Informational                     [Page 1]
RFC 6985                       IMIX Genome                     July 2013

Copyright Notice

   Copyright (c) 2013 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
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................2
   2. Requirements Language ...........................................3
   3. Scope and Goals .................................................3
   4. Specification of the IMIX Genome ................................4
   5. Specification of a Custom IMIX ..................................6
   6. Reporting Long or Pseudorandom Packet Sequences .................7
      6.1. Run-Length Encoding ........................................7
      6.2. Table of Proportions .......................................7
      6.3. Deterministic Algorithm ....................................7
      6.4. Pseudorandom Length Algorithm ..............................8
      6.5. Pseudorandom Sequence Algorithm ............................8
   7. Security Considerations .........................................8
   8. Acknowledgements ................................................8
   9. References ......................................................9
      9.1. Normative References .......................................9
      9.2. Informative References .....................................9

1.  Introduction

   This memo defines a method to unambiguously specify the sequence of
   packet sizes used in a load test.

   Benchmarking methodologies [RFC2544] have always relied on test
   conditions with constant packet sizes, with the goal of understanding
   what network device capability has been tested.  Tests with the
   smallest size stress the header processing capacity, and tests with
   the largest size stress the overall bit-processing capacity.  Tests
   with sizes in between may determine the transition between these two
   capacities.

Morton                        Informational                     [Page 2]
RFC 6985                       IMIX Genome                     July 2013

[include full document text]