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Fibre Channel (FC) Frame Encapsulation
RFC 3643

Network Working Group                                           R. Weber
Request for Comments: 3643                                       Brocade
Category: Standards Track                                   M. Rajagopal
                                                    Broadcom Corporation
                                                           F. Travostino
                                                         Nortel Networks
                                                            M. O'Donnell
                                                                  McDATA
                                                                C. Monia
                                                          Nishan Systems
                                                               M. Merhar
                                                        Sun Microsystems
                                                           December 2003

                 Fibre Channel (FC) Frame Encapsulation

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document describes the common Fibre Channel (FC) frame
   encapsulation format and a procedure for the measurement and
   calculation of frame transit time through the IP network.  This
   specification is intended for use by any IETF protocol that
   encapsulates FC frames.

Weber, et al.               Standards Track                     [Page 1]
RFC 3643                 FC Frame Encapsulation            December 2003

Table Of Contents

   1.  Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Encapsulation Concepts . . . . . . . . . . . . . . . . . . . .  3
   3.  The FC Encapsulation Header. . . . . . . . . . . . . . . . . .  4
       3.1.  FC Encapsulation Header Format . . . . . . . . . . . . .  4
       3.2.  FC Encapsulation Header Validation . . . . . . . . . . .  7
             3.2.1.  Redundancy Based FC Encapsulation
                     Header Validation. . . . . . . . . . . . . . . .  7
             3.2.2.  CRC Based FC Encapsulation Header Validation . .  7
   4.  Measuring Fibre Channel Frame Transit Time . . . . . . . . . .  8
   5.  The FC Frame . . . . . . . . . . . . . . . . . . . . . . . . . 10
       5.1.  FC Frame Content . . . . . . . . . . . . . . . . . . . . 10
       5.2.  Bit and Byte Ordering. . . . . . . . . . . . . . . . . . 10
       5.3.  FC SOF and EOF . . . . . . . . . . . . . . . . . . . . . 11
   6.  Security Considerations. . . . . . . . . . . . . . . . . . . . 12
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
       7.1.  Normative References . . . . . . . . . . . . . . . . . . 12
       7.2.  Informative References . . . . . . . . . . . . . . . . . 13
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 14
   Appendix
   A  Fibre Channel Bit and Byte Numbering Guidance . . . . . . . . . 15
   B  Encapsulating Protocol Requirements . . . . . . . . . . . . . . 15
   C  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 16
   D  Intellectual Property Rights Statement. . . . . . . . . . . . . 17
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 18
   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 20

1.  Scope

   This document describes common mechanisms for the transport of Fibre
   Channel frames over an IP network, including the encapsulation format
   and a mechanism for enforcing the Fibre Channel frame lifetime
   limits.

   Warning to Readers Familiar With Fibre Channel: Both Fibre Channel
   and IETF standards use the same byte transmission order. However, the
   bit and byte numbering is different.  See Appendix A for guidance.

   The organization responsible for the Fibre Channel standards (INCITS
   Technical Committee T11) has determined that some functions and modes
   of operation are not interoperable to the degree required by the IETF
   (see FC-MI [8]).  This document includes applicable T11
   interoperability determinations in the form of restrictions on the
   use of this encapsulation mechanism.

Weber, et al.               Standards Track                     [Page 2]
RFC 3643                 FC Frame Encapsulation            December 2003

   Use of these mechanisms in an encapsulating protocol requires an
   additional document to specify the encapsulating protocol specific

[include full document text]