IEEE 802.11 Medium Access Control (MAC) Profile for Control and Provisioning of Wireless Access Points (CAPWAP)
RFC 7494

Document Type RFC - Proposed Standard (April 2015; No errata)
Last updated 2015-10-14
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IESG IESG state RFC 7494 (Proposed Standard)
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Internet Engineering Task Force (IETF)                           C. Shao
Request for Comments: 7494                                       H. Deng
Category: Standards Track                                   China Mobile
ISSN: 2070-1721                                            R. Pazhyannur
                                                           Cisco Systems
                                                                 F. Bari
                                                                    AT&T
                                                                R. Zhang
                                                           China Telecom
                                                           S. Matsushima
                                                        SoftBank Telecom
                                                              April 2015

    IEEE 802.11 Medium Access Control (MAC) Profile for Control and
            Provisioning of Wireless Access Points (CAPWAP)

Abstract

   The Control and Provisioning of Wireless Access Points (CAPWAP)
   protocol binding for IEEE 802.11 defines two Medium Access Control
   (MAC) modes for IEEE 802.11 Wireless Transmission Points (WTPs):
   Split and Local MAC.  In the Split MAC mode, the partitioning of
   encryption/decryption functions is not clearly defined.  In the Split
   MAC mode description, IEEE 802.11 encryption is specified as located
   in either the Access Controller (AC) or the WTP, with no clear way
   for the AC to inform the WTP of where the encryption functionality
   should be located.  This leads to interoperability issues, especially
   when the AC and WTP come from different vendors.  To prevent
   interoperability issues, this specification defines an IEEE 802.11
   MAC Profile message element in which each profile specifies an
   unambiguous division of encryption functionality between the WTP and
   AC.

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 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/rfc7494.

Shao, et al.                 Standards Track                    [Page 1]
RFC 7494                   CAPWAP MAC Profile                 April 2015

Copyright Notice

   Copyright (c) 2015 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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  IEEE MAC Profile Descriptions . . . . . . . . . . . . . . . .   5
     2.1.  Split MAC with WTP Encryption . . . . . . . . . . . . . .   5
     2.2.  Split MAC with AC Encryption  . . . . . . . . . . . . . .   6
     2.3.  IEEE 802.11 MAC Profile Frame Exchange  . . . . . . . . .   8
   3.  MAC Profile Message Element Definitions . . . . . . . . . . .   8
     3.1.  IEEE 802.11 Supported MAC Profiles  . . . . . . . . . . .   8
     3.2.  IEEE 802.11 MAC Profile . . . . . . . . . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  12
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

Shao, et al.                 Standards Track                    [Page 2]
RFC 7494                   CAPWAP MAC Profile                 April 2015

1.  Introduction

   The CAPWAP protocol supports two MAC modes of operation: Split and
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