Network Working Group M. Boucadair Internet-Draft C. Jacquenet Intended status: Experimental Orange Expires: June 3, 2017 November 30, 2016 LISP Shared Extension Message & IANA Registry for LISP Packet Type Allocations draft-ietf-lisp-type-iana-04 Abstract This document defines a registry for 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. 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 June 3, 2017. Copyright Notice Copyright (c) 2016 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 Boucadair & Jacquenet Expires June 3, 2017 [Page 1] Internet-Draft LISP Packet Type Allocations November 2016 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. 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). 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. Boucadair & Jacquenet Expires June 3, 2017 [Page 2] Internet-Draft LISP Packet Type Allocations November 2016 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 is assigned on a First Come, First Served (FCFS) basis [RFC5226]. These identifiers are 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: 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] Boucadair & Jacquenet Expires June 3, 2017 [Page 3] Internet-Draft LISP Packet Type Allocations November 2016 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. The value 15 is reserved for Experimental Use [RFC5226]. 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. Entries are assigned on a 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 and Dino Farinacci 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, . [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, . [RFC6830] Farinacci, D., Fuller, V., Meyer, D., and D. Lewis, "The Locator/ID Separation Protocol (LISP)", RFC 6830, DOI 10.17487/RFC6830, January 2013, . Boucadair & Jacquenet Expires June 3, 2017 [Page 4] Internet-Draft LISP Packet Type Allocations November 2016 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-08 (work in progress), September 2016. [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 Christian Jacquenet Orange Rennes 35000 France EMail: christian.jacquenet@orange.com Boucadair & Jacquenet Expires June 3, 2017 [Page 5]