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

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03
• 04
• 05
• 06
• 07
• 08
• 09
• 10

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.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   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.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   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