Internet Engineering Task Force (IETF) D. Black, Ed.
Request for Comments: 6307 EMC Corporation
Category: Standards Track L. Dunbar, Ed.
ISSN: 2070-1721 Huawei Technologies
M. Roth
Infinera
R. Solomon
Orckit-Corrigent
April 2012
Encapsulation Methods for Transport of
Fibre Channel Traffic over MPLS Networks
Abstract
A Fibre Channel pseudowire (PW) is used to carry Fibre Channel
traffic over an MPLS network. This enables service providers to take
advantage of MPLS to offer "emulated" Fibre Channel services. This
document specifies the encapsulation of Fibre Channel traffic within
a pseudowire. It also specifies the common procedures for using a PW
to provide a Fibre Channel service.
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/rfc6307.
Black, et al. Standards Track [Page 1]RFC 6307 FC Encapsulation April 2012Copyright Notice
Copyright (c) 2012 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
1.1. Transparency ...............................................3
1.2. Bandwidth Efficiency .......................................4
1.3. Reliability ................................................5
1.4. Conventions Used in This Document ..........................5
2. Reference Model .................................................6
3. Encapsulation ...................................................8
3.1. The Control Word ..........................................10
3.2. MTU Requirements ..........................................11
3.3. Mapping of FC Traffic to PW Packets........................11
3.3.1. FC Data Frames (PT=0) and FC Login Frames (PT=1) ...11
3.3.2. FC Primitive Sequences and Primitive
Signals (PT=2) .....................................12
3.3.3. FC PW Control Frames (PT=6) ........................14
3.4. PW Failure Mapping ........................................15
4. Signaling of FC Pseudowires ....................................15
5. Timing Considerations ..........................................15
6. Security Considerations ........................................17
7. Applicability Statement ........................................17
8. IANA Considerations ............................................18
9. Acknowledgments ................................................19
10. Normative References ..........................................19
11. Informative References ........................................20
Black, et al. Standards Track [Page 2]RFC 6307 FC Encapsulation April 20121. Introduction
Fibre Channel (FC) is a high-speed communications technology, used
primarily for Storage Area Networks (SANs). Within a single site
(e.g., data center), an FC-based SAN connects servers to storage
systems, and FC can be extended across sites. When FC is extended
across multiple sites, the most common usage is storage replication
datatracker.ietf.org