Skip to main content

Management Guidelines for the Locator/ID Separation Protocol (LISP) Endpoint Identifier (EID) Block
RFC 7955

Document Type RFC - Historic (September 2016)
Authors Luigi Iannone , Roger Jorgensen , David R. Conrad , Geoff Huston
Last updated 2023-12-01
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
IESG Responsible AD Brian Haberman
Send notices to (None)
RFC 7955
Internet Engineering Task Force (IETF)                        L. Iannone
Request for Comments: 7955                             Telecom ParisTech
Category: Informational                                     R. Jorgensen
ISSN: 2070-1721                                    Bredbandsfylket Troms
                                                               D. Conrad
                                                        Virtualized, LLC
                                                               G. Huston
                                                          September 2016

  Management Guidelines for the Locator/ID Separation Protocol (LISP)
                    Endpoint Identifier (EID) Block


   This document proposes a framework for the management of the Locator/
   ID Separation Protocol (LISP) Endpoint Identifier (EID) address
   block.  The framework described relies on hierarchical distribution
   of the address space, granting temporary usage of prefixes of such
   space to requesting organizations.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at

Iannone, et al.               Informational                     [Page 1]
RFC 7955                LISP EID Block Management         September 2016

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
   ( 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   3
   3.  Definition of Terms . . . . . . . . . . . . . . . . . . . . .   3
   4.  EID Prefix Registration Policy  . . . . . . . . . . . . . . .   3
   5.  EID Prefixes Registration Requirements  . . . . . . . . . . .   4
   6.  EID Prefix Request Template . . . . . . . . . . . . . . . . .   4
   7.  Policy Validity Period  . . . . . . . . . . . . . . . . . . .   6
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   10. Procedures to be Followed by RIPE NCC . . . . . . . . . . . .   7
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     11.2.  Informative References . . . . . . . . . . . . . . . . .   8
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   The Locator/ID Separation Protocol (LISP [RFC6830]) and related
   mechanisms ([RFC6831], [RFC6832], [RFC6833], [RFC6834], [RFC6835],
   [RFC6836], [RFC6837]) separate the IP addressing space into two
   logical spaces, the Endpoint Identifier (EID) space and the Routing
   Locator (RLOC) space.  The first space is used to identify
   communication endpoints, while the second is used to locate EIDs in
   the Internet routing infrastructure topology.

   [RFC7954] requests an IPv6 address block reservation exclusively for
   use as EID prefixes in the LISP experiment.  The rationale, intent,
   size, and usage of the EID address block are described in [RFC7954].

Iannone, et al.               Informational                     [Page 2]
RFC 7955                LISP EID Block Management         September 2016

   This document proposes a management framework for the registration of
   EID prefixes from that block, allowing the requesting organization
   exclusive use of those EID prefixes limited to the duration of the
   LISP experiment.

2.  Requirements Notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   document are to be interpreted as described in [RFC2119].

3.  Definition of Terms

   This document does not introduce any new terms related to the set of
   LISP Specifications ([RFC6830], [RFC6831], [RFC6832], [RFC6833],
   [RFC6834], [RFC6835], [RFC6836], [RFC6837]), but assumes that the
   reader is familiar with the LISP terminology.  [INTRO] provides an
   introduction to the LISP technology, including its terminology.

4.  EID Prefix Registration Policy

   The request for registration of EID prefixes MUST be done under the
   following policies:

   1.  EID prefixes are made available in the reserved space on a
       temporary basis and for experimental uses.  The requester of an
       experimental prefix MUST provide a short description of the
       intended use or experiment that will be carried out (see
       Section 6).  If the prefix will be used for activities not
       documented in the original description, renewal of the
       registration may be denied.

   2.  EID prefix registrations MUST be renewed on a regular basis to
       ensure their use by active participants in the experiment.  The
       registration period is 12 months.  A renewal SHOULD NOT cause a
       change in the EID prefix registered in the previous request.  The
       conditions of registration renewal are to be the same as the
       conditions of the first EID prefix registration request.

   3.  It is preferable that EID prefixes whose registrations have
       expired not be reused.  When an EID prefix registration is
       removed from the registry, then the reuse of the EID prefix in a
       subsequent registration on behalf of a different end user should
       be avoided where possible.  If the considerations of overall
       usage of the EID block prefix requires reuse of a previously
       registered EID prefix, then a minimum delay of at least one week
       between removal and subsequent registration SHOULD be applied by
       the registry operator.

Iannone, et al.               Informational                     [Page 3]
RFC 7955                LISP EID Block Management         September 2016

   4.  When the reserved experimental LISP EID block expires, all EID
       prefix registrations expire as well.  The further disposition of
       these prefixes and the associated registry entries are to be
       specified in the announcement of the cessation of this

5.  EID Prefixes Registration Requirements

   All EID prefix registrations MUST satisfy the following requirements:

   1.  All EID prefix registrations MUST use a globally unique EID

   2.  The EID prefix registration information, as specified in
       Section 6, MUST be collected upon initial registration and
       renewal, and made publicly available through interfaces allowing
       both the retrieval of specific registration details (search) and
       the enumeration of the entire registry contents (e.g., RDAP
       ([RFC7481]), WHOIS, HTTP, or similar access methods).

   3.  The registry operator MUST permit the delegation of EID prefixes
       in the reverse DNS space to holders of registered EID prefixes.

   4.  Anyone can obtain an entry in the EID prefix registry, on the
       understanding that the prefix so registered is for the exclusive
       use in the LISP experimental network, and that their registration
       details (as specified in Section 6) are openly published in the
       EID prefix registry.

6.  EID Prefix Request Template

   The following is a basic request template for prefix registration to
   ensure a uniform process.  This template is inspired by IANA's online
   "Private Enterprise Number (PEN) Request" form

   Note that all details in this registration become part of the
   registry and will be published in the LISP EID Prefix Registry
   managed by RIPE NCC.

   The EID Prefix Request template MUST at a minimum contain:

   1.  Organization (In the case of individuals requesting an EID
       prefix, this section can be left empty)

       (a)  Organization Name

       (b)  Organization Address

Iannone, et al.               Informational                     [Page 4]
RFC 7955                LISP EID Block Management         September 2016

       (c)  Organization Phone

       (d)  Organization Website

   2.  Contact Person (Mandatory)

       (a)  Name

       (b)  Address

       (c)  Phone

       (d)  Fax (optional)

       (e)  Email

   3.  EID Prefix Request (Mandatory)

       (a)  Prefix Size

         +  Expressed as an address prefix length.

       (b)  Prefix Size Rationale

       (c)  Lease Period

         +  Note well: All EID Prefix registrations will be valid until
            the earlier date of 12 months from the date of registration
            or August 2019.

         +  All registrations may be renewed by the applicant for
            further 12-month periods, ending on August 2019.

         +  According to the 3+3 year experimentation plan, defined in
            [RFC7954], all registrations MUST end by August 2019, unless
            the IETF community decides to grant a permanent LISP EID
            address block.  In the latter case, registrations following
            the present document policy MUST end by August 2022 and a
            new policy (to be decided -- see Section 7) will apply

   4.  Experiment Description

       (a)  Experiment and Deployment Description

       (b)  Interoperability with Existing LISP Deployments

       (c)  Interoperability with Legacy Internet

Iannone, et al.               Informational                     [Page 5]
RFC 7955                LISP EID Block Management         September 2016

   5.  Reverse DNS Servers (Optional)

       (a)  Name Server Name

       (b)  Name Server Address

       (c)  Name Server Name

       (d)  Name Server Address

       (Repeat if necessary)

7.  Policy Validity Period

   The policy outlined in the present document is tied to the existence
   of the experimental LISP EID block requested in [RFC7954] and is
   valid until August 2019.

   If the IETF decides to transform the block into a permanent
   allocation, the usage period reserved for the LISP EID block will be
   extended for three years (until August 2022) to allow time for the
   IETF to define, following the policies outlined in [RFC5226], the
   final size of the EID block and create a transition plan, while the
   policy in the present document will still apply.

   Note that, as stated in [RFC7954], the transition of the EID block
   into a permanent allocation has the potential to pose policy issues
   (as recognized in [RFC2860], Section 4.3); hence, discussion with the
   IANA, the Regional Internet Registry (RIR) communities, and the IETF
   community will be necessary to determine the appropriate policy for
   permanent EID prefix management, which will be effective after August

8.  Security Considerations

   This document does not introduce new security threats in the LISP
   architecture nor in the Legacy Internet architecture.

   For accountability reasons and in line with the security
   considerations in [RFC7020], each registration request MUST contain
   accurate information about the requesting entity (company,
   institution, individual, etc.) and valid and accurate contact
   information of a referral person (see Section 6).

Iannone, et al.               Informational                     [Page 6]
RFC 7955                LISP EID Block Management         September 2016

9.  IANA Considerations

   IANA allocated the following IPv6 address block for experimental use
   as the LISP EID prefix [RFC7954]:

   o  Address Block: 2001:5::/32

   o  Name: EID Space for LISP

   o  RFC: [RFC7954]

   o  Further details are at:

   To grant requesting organizations and individuals exclusive use of
   EID prefixes out of this reserved block (limited to the duration of
   the LISP experiment as outlined in Section 7), there is an
   operational requirement for an EID registration service.

   Provided that the policies and requirements outlined in Sections 4,
   5, and 6 are satisfied, EID prefix registration is accorded based on
   a "First Come First Served" basis.

   There is no hard limit to the number of registrations an organization
   or individual can submit, as long as the information described in
   Section 6 is provided, in particular point 4: "Experiment

   For the duration defined in [RFC7954], RIPE NCC will manage the LISP
   EID prefix as described herein.  Therefore, this document has no IANA

10.  Procedures to be Followed by RIPE NCC

   RIPE NCC will provide the registration service following the EID
   Prefix Registration Policy (Section 4) and the EID Prefix
   Registration Requirements (Section 5) provided in this document.  The
   request form provided by RIPE NCC will include at least the
   information from the template in Section 6.  RIPE NCC will make all
   received requests publicly available.  While this document does not
   suggest any minimum allocation size; RIPE NCC is allowed to introduce
   such a minimum size for management purposes.

Iannone, et al.               Informational                     [Page 7]
RFC 7955                LISP EID Block Management         September 2016

11.  References

11.1.  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,

   [RFC7954]  Iannone, L., Lewis, D., Meyer, D., and V. Fuller,
              "Locator/ID Separation Protocol (LISP) Endpoint Identifier
              (EID) Block", RFC 7954, DOI 10.17487/RFC7954, September
              2016, <>.

11.2.  Informative References

   [INTRO]    Cabellos-Aparicio, A. and D. Saucez, "An Architectural
              Introduction to the Locator/ID Separation Protocol
              (LISP)", Work in Progress, draft-ietf-lisp-introduction-
              13, April 2015.

   [RFC2860]  Carpenter, B., Baker, F., and M. Roberts, "Memorandum of
              Understanding Concerning the Technical Work of the
              Internet Assigned Numbers Authority", RFC 2860,
              DOI 10.17487/RFC2860, June 2000,

   [RFC6830]  Farinacci, D., Fuller, V., Meyer, D., and D. Lewis, "The
              Locator/ID Separation Protocol (LISP)", RFC 6830,
              DOI 10.17487/RFC6830, January 2013,

   [RFC6831]  Farinacci, D., Meyer, D., Zwiebel, J., and S. Venaas, "The
              Locator/ID Separation Protocol (LISP) for Multicast
              Environments", RFC 6831, DOI 10.17487/RFC6831, January
              2013, <>.

   [RFC6832]  Lewis, D., Meyer, D., Farinacci, D., and V. Fuller,
              "Interworking between Locator/ID Separation Protocol
              (LISP) and Non-LISP Sites", RFC 6832,
              DOI 10.17487/RFC6832, January 2013,

Iannone, et al.               Informational                     [Page 8]
RFC 7955                LISP EID Block Management         September 2016

   [RFC6833]  Fuller, V. and D. Farinacci, "Locator/ID Separation
              Protocol (LISP) Map-Server Interface", RFC 6833,
              DOI 10.17487/RFC6833, January 2013,

   [RFC6834]  Iannone, L., Saucez, D., and O. Bonaventure, "Locator/ID
              Separation Protocol (LISP) Map-Versioning", RFC 6834,
              DOI 10.17487/RFC6834, January 2013,

   [RFC6835]  Farinacci, D. and D. Meyer, "The Locator/ID Separation
              Protocol Internet Groper (LIG)", RFC 6835,
              DOI 10.17487/RFC6835, January 2013,

   [RFC6836]  Fuller, V., Farinacci, D., Meyer, D., and D. Lewis,
              "Locator/ID Separation Protocol Alternative Logical
              Topology (LISP+ALT)", RFC 6836, DOI 10.17487/RFC6836,
              January 2013, <>.

   [RFC6837]  Lear, E., "NERD: A Not-so-novel Endpoint ID (EID) to
              Routing Locator (RLOC) Database", RFC 6837,
              DOI 10.17487/RFC6837, January 2013,

   [RFC7020]  Housley, R., Curran, J., Huston, G., and D. Conrad, "The
              Internet Numbers Registry System", RFC 7020,
              DOI 10.17487/RFC7020, August 2013,

   [RFC7481]  Hollenbeck, S. and N. Kong, "Security Services for the
              Registration Data Access Protocol (RDAP)", RFC 7481,
              DOI 10.17487/RFC7481, March 2015,

Iannone, et al.               Informational                     [Page 9]
RFC 7955                LISP EID Block Management         September 2016


   Thanks to A. Retana, J. Arkko, P. Yee, A. de la Haye, A. Cima,
   A. Pawlik, J. Curran, A. Severin, B. Haberman, T. Manderson,
   D. Lewis, D. Farinacci, M. Binderberger, D. Saucez, E. Lear, for
   their helpful comments.

   The work of Luigi Iannone has been partially supported by the
   ANR-13-INFR-0009 LISP-Lab Project <> and the EIT KIC
   ICT-Labs SOFNETS Project.

Authors' Addresses

   Luigi Iannone
   Telecom ParisTech


   Roger Jorgensen
   Bredbandsfylket Troms


   David Conrad
   Virtualized, LLC
   United States


   Geoff Huston
   Asia Pacific Network Information Centre (APNIC)


Iannone, et al.               Informational                    [Page 10]