Locator/ID Separation Protocol (LISP) Map-Versioning
draft-ietf-lisp-6834bis-07
Network Working Group L. Iannone
Internet-Draft Huawei Technologies France S.A.S.U
Obsoletes: 6834 (if approved) D. Saucez
Intended status: Standards Track INRIA
Expires: April 18, 2021 O. Bonaventure
Universite catholique de Louvain
October 15, 2020
Locator/ID Separation Protocol (LISP) Map-Versioning
draft-ietf-lisp-6834bis-07
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
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provisions of BCP 78 and BCP 79.
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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 April 18, 2021 [Page 1]
Internet-Draft LISP Map-Versioning October 2020
This Internet-Draft will expire on April 18, 2021.
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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 . . . . . . . . . . . . . 9
7. Map Record and Map-Version . . . . . . . . . . . . . . . . . 10
8. Benefits and Case Studies for Map-Versioning . . . . . . . . 11
8.1. Map-Versioning and Unidirectional Traffic . . . . . . . . 11
8.2. Map-Versioning and Interworking . . . . . . . . . . . . . 12
8.2.1. Map-Versioning and Proxy-ITRs . . . . . . . . . . . . 12
8.2.2. Map-Versioning and LISP-NAT . . . . . . . . . . . . . 13
8.2.3. Map-Versioning and Proxy-ETRs . . . . . . . . . . . . 13
8.3. RLOC Shutdown/Withdraw . . . . . . . . . . . . . . . . . 13
8.4. Map-Version Additional Use Cases . . . . . . . . . . . . 14
9. Security Considerations . . . . . . . . . . . . . . . . . . . 14
9.1. Map-Versioning against Traffic Disruption . . . . . . . . 14
9.2. Map-Versioning against Reachability Information DoS . . . 15
10. Deployment Considerations . . . . . . . . . . . . . . . . . . 15
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
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