Network Working Group M. Boucadair
Internet-Draft C. Jacquenet
Updates: 6830 (if approved) Orange
Intended status: Experimental February 1, 2017
Expires: August 5, 2017
LISP Shared Extension Message & IANA Registry for LISP Packet Type
Allocations
draft-ietf-lisp-type-iana-05
Abstract
This document defines a registry for Locator/ID Separation Protocol
(LISP) Packet Type allocations. It also specifies a LISP shared
message type for defining future extensions and conducting
experiments without consuming a LISP packet type codepoint for each
extension.
This document updates RFC6830.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 5, 2017.
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Copyright Notice
Copyright (c) 2017 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 . . . . . . . . . . . . . . . . . . . . . . . . 2
2. LISP Shared Extension Message Type . . . . . . . . . . . . . 3
3. Security Considerations . . . . . . . . . . . . . . . . . . . 3
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4.1. LISP Packet Types . . . . . . . . . . . . . . . . . . . . 3
4.2. Sub-Types . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative references . . . . . . . . . . . . . . . . . . 4
6.2. Informative References . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
The Locator/ID Separation Protocol (LISP, [RFC6830]) base
specification defines a set of primitives that are identified with a
packet type code. Several extensions have been proposed to add more
LISP functionalities. For example, new message types are proposed in
[I-D.ietf-lisp-ddt], [I-D.zhao-lisp-mn-extension],
[I-D.boucadair-lisp-bulk], [I-D.ermagan-lisp-nat-traversal], or
[I-D.boucadair-lisp-subscribe]. It is expected that additional LISP
extensions will be proposed in the future.
In order to ease the tracking of LISP message types, this document
proposes to create a "LISP Packet Types" IANA registry (see
Section 4).
Because of the limited type space [RFC6830] and the need to conduct
experiments to assess new LISP extensions, this document specifies a
shared LISP extension message type and proposes a procedure for
registering LISP shared extension sub-types (see Section 2).
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Concretely, one single LISP message type code is dedicated to future
LISP extensions; sub-types are used to uniquely identify a given LISP
extension making use of the shared LISP extension message type.
These identifiers are selected by the author(s) of the corresponding
LISP specification that introduces a new LISP extension message type.
2. LISP Shared Extension Message Type
Figure 1 depicts the common format of the LISP shared extension
message. The type field MUST be set to 15 (see Section 4).
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Type=15| Sub-type | extension-specific |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// extension-specific //
// //
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 1: LISP Shared Extension Message Type
The "Sub-type" field conveys a unique identifier that MUST be
registered with IANA (see Section 4.2).
The exact structure of the 'extension-specific' portion of the
message is specified in the corresponding specification document.
3. Security Considerations
This document does not introduce any additional security issues other
than those discussed in [RFC6830].
4. IANA Considerations
4.1. LISP Packet Types
IANA is requested to create a new protocol registry for LISP Packet
Types, numbered 0-15. The registry must be initially populated with
the following values:
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Message Code Reference
================================= ==== ===============
Reserved 0 [RFC6830]
LISP Map-Request 1 [RFC6830]
LISP Map-Reply 2 [RFC6830]
LISP Map-Register 3 [RFC6830]
LISP Map-Notify 4 [RFC6830]
LISP Encapsulated Control Message 8 [RFC6830]
LISP Shared Extension Message 15 [This document]
The values in the ranges 5-7 and 9-14 can be assigned via Standards
Action [RFC5226]. Documents that request for a new LISP packet type
may indicate a preferred value in the corresponding IANA sections.
4.2. Sub-Types
IANA is requested to create a "LISP Shared Extension Message type
Sub-types" registry. No initial values are assigned at the creation
of the registry; (0-4095) are available for future assignments.
The values in the range 0-1023 are assigned via Standards Action.
This range is provisioned to anticipate, in particular, the
exhaustion of the LISP Packet types.
The values in 1024-4095 are assigned on a First Come, First Served
(FCFS) basis. The registration procedure should provide IANA with
the desired codepoint and a point of contact. Providing a short
description (together with an acronym, if relevant) of the foreseen
usage of the extension message is also encouraged.
5. Acknowledgments
This work is partly funded by ANR LISP-Lab project #ANR-13-INFR-
009-X.
Many thanks to Luigi Iannone, Dino Farinacci, and Alvaro Retana for
the review.
Thanks to Geoff Huston for the RtgDir directorate review.
6. References
6.1. Normative references
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>.
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[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
DOI 10.17487/RFC5226, May 2008,
<http://www.rfc-editor.org/info/rfc5226>.
[RFC6830] Farinacci, D., Fuller, V., Meyer, D., and D. Lewis, "The
Locator/ID Separation Protocol (LISP)", RFC 6830,
DOI 10.17487/RFC6830, January 2013,
<http://www.rfc-editor.org/info/rfc6830>.
6.2. Informative References
[I-D.boucadair-lisp-bulk]
Boucadair, M. and C. Jacquenet, "LISP Mapping Bulk
Retrieval", draft-boucadair-lisp-bulk-03 (work in
progress), July 2016.
[I-D.boucadair-lisp-subscribe]
Boucadair, M. and C. Jacquenet, "LISP Subscription",
draft-boucadair-lisp-subscribe-03 (work in progress), July
2016.
[I-D.ermagan-lisp-nat-traversal]
Ermagan, V., Farinacci, D., Lewis, D., Skriver, J., Maino,
F., and C. White, "NAT traversal for LISP", draft-ermagan-
lisp-nat-traversal-11 (work in progress), August 2016.
[I-D.ietf-lisp-ddt]
Fuller, V., Lewis, D., Ermagan, V., Jain, A., and A.
Smirnov, "LISP Delegated Database Tree", draft-ietf-lisp-
ddt-09 (work in progress), January 2017.
[I-D.zhao-lisp-mn-extension]
Wang, J., Meng, Y., and N. Zhao, "LISP Mobile Node
extension", draft-zhao-lisp-mn-extension-02 (work in
progress), October 2011.
Authors' Addresses
Mohamed Boucadair
Orange
Rennes 35000
France
EMail: mohamed.boucadair@orange.com
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Christian Jacquenet
Orange
Rennes 35000
France
EMail: christian.jacquenet@orange.com
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