Fibre Channel Over TCP/IP (FCIP)
RFC 3821
| Document | Type |
RFC - Proposed Standard
(July 2004; No errata)
Updated by RFC 7146
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 3821 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Allison Mankin | ||
| Send notices to | <ElizabethRodriguez@ieee.org> | ||
Network Working Group M. Rajagopal
Request for Comments: 3821 E. Rodriguez
Category: Standards Track R. Weber
July 2004
Fibre Channel Over TCP/IP (FCIP)
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 (2004).
Abstract
Fibre Channel Over TCP/IP (FCIP) describes mechanisms that allow the
interconnection of islands of Fibre Channel storage area networks
over IP-based networks to form a unified storage area network in a
single Fibre Channel fabric. FCIP relies on IP-based network
services to provide the connectivity between the storage area network
islands over local area networks, metropolitan area networks, or wide
area networks.
Table Of Contents
1. Purpose, Motivation, and Objectives. . . . . . . . . . . . . . 3
2. Relationship to Fibre Channel Standards. . . . . . . . . . . . 4
2.1. Relevant Fibre Channel Standards . . . . . . . . . . . . 4
2.2. This Specification and Fibre Channel Standards . . . . . 5
3. Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Protocol Summary . . . . . . . . . . . . . . . . . . . . . . . 7
5. The FCIP Model . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1. FCIP Protocol Model. . . . . . . . . . . . . . . . . . . 9
5.2. FCIP Link. . . . . . . . . . . . . . . . . . . . . . . . 10
5.3. FC Entity. . . . . . . . . . . . . . . . . . . . . . . . 11
5.4. FCIP Entity. . . . . . . . . . . . . . . . . . . . . . . 12
5.5. FCIP Link Endpoint (FCIP_LEP). . . . . . . . . . . . . . 13
5.6. FCIP Data Engine (FCIP_DE) . . . . . . . . . . . . . . . 14
5.6.1. FCIP Encapsulation of FC Frames. . . . . . . . . 16
5.6.2. FCIP Data Engine Error Detection and Recovery. . 19
6. Checking FC Frame Transit Times in the IP Network. . . . . . . 22
Rajagopal, et al. Standards Track [Page 1]
RFC 3821 FCIP July 2004
7. The FCIP Special Frame (FSF) . . . . . . . . . . . . . . . . . 23
7.1. FCIP Special Frame Format. . . . . . . . . . . . . . . . 23
7.2. Overview of FSF Usage in Connection Establishment. . . . 26
8. TCP Connection Management. . . . . . . . . . . . . . . . . . . 28
8.1. TCP Connection Establishment . . . . . . . . . . . . . . 28
8.1.1. Connection Establishment Model . . . . . . . . . 28
8.1.2. Creating New TCP Connections . . . . . . . . . . 29
8.1.3. Processing Incoming TCP Connect Requests . . . . 32
8.1.4. Simultaneous Connection Establishment. . . . . . 36
8.2. Closing TCP Connections. . . . . . . . . . . . . . . . . 36
8.3. TCP Connection Parameters. . . . . . . . . . . . . . . . 36
8.3.1. TCP Selective Acknowledgement Option . . . . . . 36
8.3.2. TCP Window Scale Option. . . . . . . . . . . . . 36
8.3.3. Protection Against Sequence Number Wrap. . . . . 37
8.3.4. TCP_NODELAY Option . . . . . . . . . . . . . . . 37
8.4. TCP Connection Considerations. . . . . . . . . . . . . . 37
8.5. Flow Control Mapping between TCP and FC. . . . . . . . . 37
9. Security . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.1. Threat Models. . . . . . . . . . . . . . . . . . . . . . 38
9.2. FC Fabric and IP Network Deployment Models . . . . . . . 40
9.3. FCIP Security Components . . . . . . . . . . . . . . . . 40
9.3.1. IPsec ESP Authentication and Confidentiality . . 40
9.3.2. Key Management . . . . . . . . . . . . . . . . . 41
9.3.3. ESP Replay Protection and Rekeying Issues. . . . 43
9.4. Secure FCIP Link Operation . . . . . . . . . . . . . . . 44
9.4.1. FCIP Link Initialization Steps . . . . . . . . . 44
9.4.2. TCP Connection Security Associations (SAs) . . . 44
9.4.3. Handling Data Integrity and Confidentiality
Violations . . . . . . . . . . . . . . . . . . . 45
10. Performance. . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.1. Performance Considerations . . . . . . . . . . . . . . . 45
10.2. IP Quality of Service (QoS) Support. . . . . . . . . . . 46
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