Locator/ID Separation Protocol (LISP) Map-Versioning
draft-ietf-lisp-6834bis-02

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Network Working Group                                         L. Iannone
Internet-Draft                                         Telecom ParisTech
Obsoletes: 6834 (if approved)                                  D. Saucez
Intended status: Standards Track                  INRIA Sophia Antipolis
Expires: March 10, 2019                                   O. Bonaventure
                                        Universite catholique de Louvain
                                                       September 6, 2018

          Locator/ID Separation Protocol (LISP) Map-Versioning
                       draft-ietf-lisp-6834bis-02

Abstract

   This document describes the LISP (Locator/ID Separation Protocol)
   Map-Versioning mechanism, which provides in-packet information about
   Endpoint ID to Routing Locator (EID-to-RLOC) mappings used to
   encapsulate LISP data packets.  The proposed approach is based on
   associating a version number to EID-to-RLOC mappings and the
   transport of such a version number in the LISP-specific header of
   LISP-encapsulated packets.  LISP Map-Versioning is particularly
   useful to inform communicating Ingress Tunnel Routers (ITRs) and
   Egress Tunnel Routers (ETRs) about modifications of the mappings used
   to encapsulate packets.  The mechanism is optional and transparent to
   implementations not supporting this feature, since in the LISP-
   specific header and in the Map Records, bits used for Map-Versioning
   can be safely ignored by ITRs and ETRs that do not support or do not
   want to use the mechanism.

   This document obsoletes RFC 6834 "Locator/ID Separation Protocol
   (LISP) Map-Versioning", which is the initial experimental
   specifications of the mechanisms updated by this document.

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
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   Drafts is at https://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."

Iannone, et al.          Expires March 10, 2019                 [Page 1]
Internet-Draft             LISP Map-Versioning            September 2018

   This Internet-Draft will expire on March 10, 2019.

Copyright Notice

   Copyright (c) 2018 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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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   4
   3.  Definitions of Terms  . . . . . . . . . . . . . . . . . . . .   4
   4.  EID-to-RLOC Map-Version Number  . . . . . . . . . . . . . . .   4
     4.1.  The Null Map-Version  . . . . . . . . . . . . . . . . . .   5
   5.  Dealing with Map-Version Numbers  . . . . . . . . . . . . . .   6
     5.1.  Handling Destination Map-Version Number . . . . . . . . .   7
     5.2.  Handling Source Map-Version Number  . . . . . . . . . . .   9
   6.  LISP Header and Map-Version Numbers . . . . . . . . . . . . .  10
   7.  LISP Generic Protocol Encapsulation (GPE) Header and Map-
       Version Numbers . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  Map Record and Map-Version  . . . . . . . . . . . . . . . . .  11
   9.  Benefits and Case Studies for Map-Versioning  . . . . . . . .  12
     9.1.  Map-Versioning and Unidirectional Traffic . . . . . . . .  12
     9.2.  Map-Versioning and Interworking . . . . . . . . . . . . .  13
       9.2.1.  Map-Versioning and Proxy-ITRs . . . . . . . . . . . .  13
       9.2.2.  Map-Versioning and LISP-NAT . . . . . . . . . . . . .  14
       9.2.3.  Map-Versioning and Proxy-ETRs . . . . . . . . . . . .  14
     9.3.  RLOC Shutdown/Withdraw  . . . . . . . . . . . . . . . . .  14
     9.4.  Map-Version Additional Use Cases  . . . . . . . . . . . .  15
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  15
     10.1.  Map-Versioning against Traffic Disruption  . . . . . . .  16
     10.2.  Map-Versioning against Reachability Information DoS  . .  16