Optional Advanced Deployment Scenarios for the Identifier-Locator Network Protocol (ILNP)
RFC 6748

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Internet Research Task Force (IRTF)                          RJ Atkinson
Request for Comments: 6748                                    Consultant
Category: Experimental                                         SN Bhatti
ISSN: 2070-1721                                            U. St Andrews
                                                           November 2012

             Optional Advanced Deployment Scenarios for the
               Identifier-Locator Network Protocol (ILNP)

Abstract

   This document provides an Architectural description and the Concept
   of Operations of some optional advanced deployment scenarios for the
   Identifier-Locator Network Protocol (ILNP), which is an evolutionary
   enhancement to IP.  None of the functions described here is required
   for the use or deployment of ILNP.  Instead, it offers descriptions
   of engineering and deployment options that might provide either
   enhanced capability or convenience in administration or management of
   ILNP-based systems.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for examination, experimental implementation, and
   evaluation.

   This document defines an Experimental Protocol for the Internet
   community.  This document is a product of the Internet Research Task
   Force (IRTF).  The IRTF publishes the results of Internet-related
   research and development activities.  These results might not be
   suitable for deployment.  This RFC represents the individual
   opinion(s) of one or more members of the Routing Research Group of
   the Internet Research Task Force (IRTF).  Documents approved for
   publication by the IRSG are not a candidate for any level of Internet
   Standard; see 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/rfc6748.

Atkinson & Bhatti             Experimental                      [Page 1]
RFC 6748                        ILNP ADV                   November 2012

Copyright Notice

   Copyright (c) 2012 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.

   This document may not be modified, and derivative works of it may not
   be created, except to format it for publication as an RFC or to
   translate it into languages other than English.

Atkinson & Bhatti             Experimental                      [Page 2]
RFC 6748                        ILNP ADV                   November 2012

Table of Contents

   1. Introduction ....................................................4
      1.1. Document Roadmap ...........................................5
      1.2. Terminology ................................................6
   2. Localised Numbering .............................................6
      2.1. Localised Locators .........................................7
      2.2. Mixed Local/Global Numbering ...............................9
      2.3. Dealing with Internal Subnets with Locator Rewriting .......9
      2.4. Localised Name Resolution with DNS ........................11
      2.5. Use of mDNS ...............................................13
      2.6. Site Network Name in DNS ..................................13
      2.7. Site Interior Topology Obfuscation ........................14
      2.8. Other SBR Considerations ..................................14
   3. An Alternative for Site Multihoming ............................16
      3.1. Site Multihoming (S-MH) Connectivity Using an SBR .........16
      3.2. Dealing with Link/Connectivity Changes ....................17
      3.3. SBR Updates to DNS ........................................18
      3.4. DNS TTL Values for L32 and L64 Records ....................18
      3.5. Multiple SBRs .............................................19
   4. An Alternative for Site (Network) Mobility .....................20
      4.1. Site (Network) Mobility ...................................20
      4.2. SBR Updates to DNS ........................................22
      4.3. DNS TTL Values for L32 and L64 Records ....................22
   5. Traffic Engineering Options ....................................22
      5.1. Load Balancing ............................................23
      5.2. Control of Egress Traffic Paths ...........................24
   6. ILNP in Datacentres ............................................26
      6.1. Virtual Image Mobility within a Single Datacentre .........27
      6.2. Virtual Image Mobility between Datacentres - Invisible ....28