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Deprecation of the Internet Fibre Channel Protocol (iFCP) Address Translation Mode
RFC 6172

Internet Engineering Task Force (IETF)                          D. Black
Request for Comments: 6172                                           EMC
Updates: 4172                                                D. Peterson
Category: Standards Track                                        Brocade
ISSN: 2070-1721                                               March 2011

       Deprecation of the Internet Fibre Channel Protocol (iFCP)
                        Address Translation Mode

Abstract

   Changes to Fibre Channel have caused the specification of the
   Internet Fibre Channel Protocol (iFCP) address translation mode to
   become incorrect.  Due to the absence of usage of iFCP address
   translation mode, it is deprecated by this document.  iFCP address
   transparent mode remains correctly specified.

   iFCP address transparent mode has been implemented and is in current
   use; therefore, it is not affected by this document.

   This document also records the state of Protocol Number 133, which
   was allocated for a pre-standard version of the Fibre Channel
   Internet Protocol (FCIP).

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/rfc6172.

Black & Peterson             Standards Track                    [Page 1]
RFC 6172              iFCP and Protocol 133 Updates           March 2011

Copyright Notice

   Copyright (c) 2011 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. Conventions Used in This Document..............................3
   3. iFCP Address Translation Mode..................................3
      3.1. Problem Discussion........................................4
      3.2. iFCP Address Translation Mode Deprecation.................4
   4. FCIP and Protocol Number 133...................................5
   5. Security Considerations........................................5
   6. IANA Considerations............................................5
   7. Conclusions....................................................5
   8. References.....................................................5
      8.1. Normative References......................................5
      8.2. Informative References....................................6
   9. Acknowledgments ...............................................6

Black & Peterson             Standards Track                    [Page 2]
RFC 6172              iFCP and Protocol 133 Updates           March 2011

1.  Introduction

   See Section 3 of [RFC4172] for introductory material on Fibre Channel
   concepts.

   The Internet Fibre Channel Protocol (iFCP) [RFC4172] operates in two
   modes with respect to Fibre Channel N_PORT fabric addresses (24-bit
   N_PORT_IDs): address transparent mode and address translation mode
   (both modes are specified in [RFC4172]):

   o  Address transparent mode is a pass-through mode that preserves
      Fibre Channel N_PORT fabric addresses.

   o  Address translation mode is a Fibre Channel analog to Network
      Address Translation (NAT) in which iFCP gateways change Fibre
      Channel N_PORT fabric addresses at the boundary between Fibre
      Channel and the Internet.  Both the source (S_ID) and destination
      (D_ID) N_PORT fabric addresses may be changed by the iFCP
      gateways.

   This document deprecates iFCP address translation mode because the
   specification has not tracked changes in Fibre Channel and because
   there are no known implementations.

   Protocol Number 133 was allocated for a pre-standard version of the
   Fibre Channel Internet Protocol (FCIP) that encapsulated FC frames

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