iFCP - A Protocol for Internet Fibre Channel Storage Networking
RFC 4172

Document Type RFC - Proposed Standard (September 2005; No errata)
Updated by RFC 7146, RFC 6172
Last updated 2015-10-14
Stream IETF
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IESG IESG state RFC 4172 (Proposed Standard)
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Responsible AD Allison Mankin
Send notices to <ElizabethRodriguez@ieee.org>
Network Working Group                                           C. Monia
Request for Comments: 4172                                    Consultant
Category: Standards Track                                  R. Mullendore
                                                                  McDATA
                                                           F. Travostino
                                                                  Nortel
                                                                W. Jeong
                                                         Troika Networks
                                                              M. Edwards
                                                       Adaptec (UK) Ltd.
                                                          September 2005

    iFCP - A Protocol for Internet Fibre Channel Storage Networking

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 (2005).

Abstract

   This document specifies an architecture and a gateway-to-gateway
   protocol for the implementation of fibre channel fabric functionality
   over an IP network.  This functionality is provided through TCP
   protocols for fibre channel frame transport and the distributed
   fabric services specified by the fibre channel standards.  The
   architecture enables internetworking of fibre channel devices through
   gateway-accessed regions with the fault isolation properties of
   autonomous systems and the scalability of the IP network.

Table of Contents

   1.  Introduction..................................................  4
       1.1.  Conventions used in This Document.......................  4
             1.1.1.  Data Structures Internal to an Implementation...  4
       1.2.  Purpose of This Document................................  4
   2.  iFCP Introduction.............................................  4
       2.1.  Definitions.............................................  5
   3.  Fibre Channel Communication Concepts..........................  7
       3.1.  The Fibre Channel Network...............................  8

Monia, et al.               Standards Track                     [Page 1]
RFC 4172           Internet Fibre Channel Networking      September 2005

       3.2.  Fibre Channel Network Topologies........................  9
             3.2.1.  Switched Fibre Channel Fabrics.................. 11
             3.2.2.  Mixed Fibre Channel Fabric...................... 12
       3.3.  Fibre Channel Layers and Link Services.................. 12
             3.3.1.  Fabric-Supplied Link Services................... 13
       3.4.  Fibre Channel Nodes..................................... 14
       3.5.  Fibre Channel Device Discovery.......................... 14
       3.6.  Fibre Channel Information Elements...................... 15
       3.7.  Fibre Channel Frame Format.............................. 15
             3.7.1.  N_PORT Address Model............................ 16
       3.8.  Fibre Channel Transport Services........................ 17
       3.9.  Login Processes......................................... 18
   4.  The iFCP Network Model........................................ 18
       4.1.  iFCP Transport Services................................. 21
             4.1.1.  Fibre Channel Transport Services Supported by
                     iFCP............................................ 21
       4.2.  iFCP Device Discovery and Configuration Management...... 21
       4.3.  iFCP Fabric Properties.................................. 22
             4.3.1.  Address Transparency............................ 22
             4.3.2.  Configuration Scalability....................... 23
             4.3.3.  Fault Tolerance................................. 23
       4.4.  The iFCP N_PORT Address Model........................... 24
       4.5.  Operation in Address Transparent Mode................... 25
             4.5.1.  Transparent Mode Domain ID Management........... 26
             4.5.2.  Incompatibility with Address Translation Mode... 26
       4.6.  Operation in Address Translation Mode................... 27
             4.6.1.  Inbound Frame Address Translation............... 28
             4.6.2.  Incompatibility with Address Transparent Mode... 29
   5.  iFCP Protocol................................................. 29
       5.1.  Overview ............................................... 29
             5.1.1.  iFCP Transport Services......................... 29
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