Mapping of Address and Port with Encapsulation (MAP-E)
RFC 7597
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RFC - Proposed Standard
(July 2015; No errata)
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Last updated |
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2015-10-14
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IETF
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bibtex
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Suresh Krishnan
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Shepherd write-up |
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Show
(last changed 2014-06-19)
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| IESG |
IESG state |
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RFC 7597 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Ted Lemon
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(None)
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| IANA |
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Version Changed - Review Needed
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No IANA Actions
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Internet Engineering Task Force (IETF) O. Troan, Ed.
Request for Comments: 7597 W. Dec
Category: Standards Track Cisco Systems
ISSN: 2070-1721 X. Li
C. Bao
Tsinghua University
S. Matsushima
SoftBank Telecom
T. Murakami
IP Infusion
T. Taylor, Ed.
Huawei Technologies
July 2015
Mapping of Address and Port with Encapsulation (MAP-E)
Abstract
This document describes a mechanism for transporting IPv4 packets
across an IPv6 network using IP encapsulation. It also describes a
generic mechanism for mapping between IPv6 addresses and IPv4
addresses as well as transport-layer ports.
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/rfc7597.
Troan, et al. Standards Track [Page 1]
RFC 7597 MAP-E July 2015
Copyright Notice
Copyright (c) 2015 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.
Troan, et al. Standards Track [Page 2]
RFC 7597 MAP-E July 2015
Table of Contents
1. Introduction ....................................................4
2. Conventions .....................................................5
3. Terminology .....................................................5
4. Architecture ....................................................7
5. Mapping Algorithm ...............................................8
5.1. Port-Mapping Algorithm ....................................10
5.2. Basic Mapping Rule (BMR) ..................................11
5.3. Forwarding Mapping Rule (FMR) .............................14
5.4. Destinations outside the MAP Domain .......................14
6. The IPv6 Interface Identifier ..................................15
7. MAP Configuration ..............................................15
7.1. MAP CE ....................................................15
7.2. MAP BR ....................................................16
8. Forwarding Considerations ......................................17
8.1. Receiving Rules ...........................................17
8.2. ICMP ......................................................18
8.3. Fragmentation and Path MTU Discovery ......................18
8.3.1. Fragmentation in the MAP Domain ....................18
8.3.2. Receiving IPv4 Fragments on the MAP Domain
Borders ............................................19
8.3.3. Sending IPv4 Fragments to the Outside ..............19
9. NAT44 Considerations ...........................................19
10. Security Considerations .......................................20
11. References ....................................................21
11.1. Normative References .....................................21
11.2. Informative References ...................................21
Appendix A. Examples ..............................................25
Appendix B. A More Detailed Description of the Derivation of the
Port-Mapping Algorithm ................................29
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