Mapping Diffserv to IEEE 802.11
RFC 8325

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Internet Engineering Task Force (IETF)                        T. Szigeti
Request for Comments: 8325                                      J. Henry
Category: Standards Track                                  Cisco Systems
ISSN: 2070-1721                                                 F. Baker
                                                           February 2018

                    Mapping Diffserv to IEEE 802.11

Abstract

   As Internet traffic is increasingly sourced from and destined to
   wireless endpoints, it is crucial that Quality of Service (QoS) be
   aligned between wired and wireless networks; however, this is not
   always the case by default.  This document specifies a set of
   mappings from Differentiated Services Code Point (DSCP) to IEEE
   802.11 User Priority (UP) to reconcile the marking recommendations
   offered by the IETF and the IEEE so as to maintain consistent QoS
   treatment between wired and IEEE 802.11 wireless networks.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8325.

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.

Szigeti, et al.              Standards Track                    [Page 1]
RFC 8325             Mapping Diffserv to IEEE 802.11       February 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Related Work  . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Interaction with RFC 7561 . . . . . . . . . . . . . . . .   4
     1.3.  Applicability Statement . . . . . . . . . . . . . . . . .   4
     1.4.  Document Organization . . . . . . . . . . . . . . . . . .   5
     1.5.  Requirements Language . . . . . . . . . . . . . . . . . .   5
     1.6.  Terminology Used in This Document . . . . . . . . . . . .   6
   2.  Service Comparison and Default Interoperation of Diffserv and
       IEEE 802.11 . . . . . . . . . . . . . . . . . . . . . . . . .   9
     2.1.  Diffserv Domain Boundaries  . . . . . . . . . . . . . . .   9
     2.2.  EDCF Queuing  . . . . . . . . . . . . . . . . . . . . . .  10
     2.3.  Default DSCP-to-UP Mappings and Conflicts . . . . . . . .  10
     2.4.  Default UP-to-DSCP Mappings and Conflicts . . . . . . . .  11
   3.  Recommendations for Capabilities of Wireless Device Marking
       and Mapping . . . . . . . . . . . . . . . . . . . . . . . . .  13
   4.  Recommendations for DSCP-to-UP Mapping  . . . . . . . . . . .  13
     4.1.  Network Control Traffic . . . . . . . . . . . . . . . . .  14
       4.1.1.  Network Control Protocols . . . . . . . . . . . . . .  14
       4.1.2.  Operations, Administration, and  Maintenance (OAM)  .  15
     4.2.  User Traffic  . . . . . . . . . . . . . . . . . . . . . .  15
       4.2.1.  Telephony . . . . . . . . . . . . . . . . . . . . . .  15
       4.2.2.  Signaling . . . . . . . . . . . . . . . . . . . . . .  16
       4.2.3.  Multimedia Conferencing . . . . . . . . . . . . . . .  17
       4.2.4.  Real-Time Interactive . . . . . . . . . . . . . . . .  17
       4.2.5.  Multimedia Streaming  . . . . . . . . . . . . . . . .  17
       4.2.6.  Broadcast Video . . . . . . . . . . . . . . . . . . .  18
       4.2.7.  Low-Latency Data  . . . . . . . . . . . . . . . . . .  18
       4.2.8.  High-Throughput Data  . . . . . . . . . . . . . . . .  18
       4.2.9.  Standard  . . . . . . . . . . . . . . . . . . . . . .  19
       4.2.10. Low-Priority Data . . . . . . . . . . . . . . . . . .  20
     4.3.  Summary of Recommendations for DSCP-to-UP Mapping . . . .  20
   5.  Recommendations for Upstream Mapping and Marking  . . . . . .  21
     5.1.  Upstream DSCP-to-UP Mapping within the Wireless Client
           Operating System  . . . . . . . . . . . . . . . . . . . .  22
     5.2.  Upstream UP-to-DSCP Mapping at the Wireless AP  . . . . .  22
     5.3.  Upstream DSCP-Passthrough at the Wireless AP  . . . . . .  23