A Lower Effort Per-Hop Behavior (LE PHB)
draft-ietf-tsvwg-le-phb-06

Document Type Active Internet-Draft (tsvwg WG)
Last updated 2018-10-11
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)                           October 11, 2018
Updates: 4594,8325 (if approved)
Intended status: Standards Track
Expires: April 14, 2019

                A Lower Effort Per-Hop Behavior (LE PHB)
                       draft-ietf-tsvwg-le-phb-06

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.  Alternatively, packets forwarded by the
   LE PHB can be associated with a scavenger service class, i.e., they
   scavenge otherwise unused resources only.  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.  This specification obsoletes RFC
   3662 and updates the DSCP recommended in RFC 4594 and RFC 8325 to use
   the DSCP assigned in this specification.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on April 14, 2019.

Bless                    Expires April 14, 2019                 [Page 1]
Internet-Draft              Lower Effort PHB                October 2018

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  PHB Description . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  Traffic Conditioning Actions  . . . . . . . . . . . . . . . .   6
   6.  Recommended DS Codepoint  . . . . . . . . . . . . . . . . . .   6
   7.  Deployment Considerations . . . . . . . . . . . . . . . . . .   7
   8.  Remarking to other DSCPs/PHBs . . . . . . . . . . . . . . . .   8
   9.  Multicast Considerations  . . . . . . . . . . . . . . . . . .   9
   10. The Update to RFC 4594  . . . . . . . . . . . . . . . . . . .  10
   11. The Update to RFC 8325  . . . . . . . . . . . . . . . . . . .  11
   12. The Update to draft-ietf-tsvwg-rtcweb-qos . . . . . . . . . .  12
   13. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   14. Security Considerations . . . . . . . . . . . . . . . . . . .  14
   15. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     15.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     15.2.  Informative References . . . . . . . . . . . . . . . . .  14
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