A Lower Effort Per-Hop Behavior (LE PHB)
draft-ietf-tsvwg-le-phb-02

Document Type Active Internet-Draft (tsvwg WG)
Last updated 2017-06-30
Replaces draft-bless-tsvwg-le-phb
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Internet Engineering Task Force                                 R. Bless
Internet-Draft                   Karlsruhe Institute of Technology (KIT)
Obsoletes: 3662 (if approved)                              June 30, 2017
Updates: 4594 (if approved)
Intended status: Standards Track
Expires: January 1, 2018

                A Lower Effort Per-Hop Behavior (LE PHB)
                       draft-ietf-tsvwg-le-phb-02

Abstract

   This document specifies properties and characteristics of a Lower
   Effort (LE) per-hop behavior (PHB).  The primary objective of this LE
   PHB is to protect best-effort (BE) traffic (packets forwarded with
   the default PHB) from LE traffic in congestion situations, i.e., when
   resources become scarce, best-effort traffic has precedence over LE
   traffic and may preempt it.  There are numerous uses for this PHB,
   e.g., for background traffic of low precedence, such as bulk data
   transfers with low priority in time, non time-critical backups,
   larger software updates, web search engines while gathering
   information from web servers and so on.  This document recommends a
   standard DSCP value for the LE PHB.

Status of This Memo

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Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bless                    Expires January 1, 2018                [Page 1]
Internet-Draft              Lower Effort PHB                   June 2017

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   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Applicability . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Deployment Considerations . . . . . . . . . . . . . . . .   5
     1.3.  Requirements Language . . . . . . . . . . . . . . . . . .   6
   2.  PHB Description . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Traffic Conditioning Actions  . . . . . . . . . . . . . . . .   7
   4.  Recommended DS Codepoint  . . . . . . . . . . . . . . . . . .   7
   5.  Remarking to other DSCPs/PHBs . . . . . . . . . . . . . . . .   7
   6.  Changes to RFC 4594 . . . . . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Appendix A.  History of the LE PHB  . . . . . . . . . . . . . . .  11
   Appendix B.  Acknowledgments  . . . . . . . . . . . . . . . . . .  11
   Appendix C.  Change History . . . . . . . . . . . . . . . . . . .  11
   Appendix D.  Note to RFC Editor . . . . . . . . . . . . . . . . .  12
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  12
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