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IKEv2 Extensions to Support Robust Header Compression over IPsec
RFC 5857

Internet Engineering Task Force (IETF)                        E. Ertekin
Request for Comments: 5857                                   C. Christou
Category: Standards Track                                      R. Jasani
ISSN: 2070-1721                                      Booz Allen Hamilton
                                                              T. Kivinen
                                                         AuthenTec, Inc.
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                                May 2010

    IKEv2 Extensions to Support Robust Header Compression over IPsec

Abstract

   In order to integrate Robust Header Compression (ROHC) with IPsec, a
   mechanism is needed to signal ROHC channel parameters between
   endpoints.  Internet Key Exchange (IKE) is a mechanism that can be
   leveraged to exchange these parameters.  This document specifies
   extensions to IKEv2 that will allow ROHC and its associated channel
   parameters to be signaled for IPsec Security Associations (SAs).

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/rfc5857.

Ertekin, et al.              Standards Track                    [Page 1]
RFC 5857         IKEv2 Extensions to Support ROHCoIPsec         May 2010

Copyright Notice

   Copyright (c) 2010 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
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   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. Terminology .....................................................3
   3. ROHC Channel Initialization for ROHCoIPsec ......................3
      3.1. ROHC_SUPPORTED Notify Message ..............................3
           3.1.1. ROHC Attributes .....................................5
           3.1.2. ROHC Attribute Types ................................6
      3.2. ROHC Channel Parameters That Are Implicitly Set ............9
   4. Security Considerations .........................................9
   5. IANA Considerations .............................................9
   6. Acknowledgments ................................................10
   7. References .....................................................11
      7.1. Normative References ......................................11
      7.2. Informative References ....................................12

Ertekin, et al.              Standards Track                    [Page 2]
RFC 5857         IKEv2 Extensions to Support ROHCoIPsec         May 2010

1.  Introduction

   Increased packet header overhead due to IPsec [IPSEC] can result in
   the inefficient utilization of bandwidth.  Coupling ROHC [ROHC] with
   IPsec offers an efficient way to transfer protected IP traffic.

   ROHCoIPsec [ROHCOIPSEC] requires configuration parameters to be
   initialized at the compressor and decompressor.  Current

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