The Locator/ID Separation Protocol (LISP)
draft-ietf-lisp-rfc6830bis-36
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Document | Type | Active Internet-Draft (lisp WG) | |
---|---|---|---|
Authors | Dino Farinacci , Vince Fuller , David Meyer , Darrel Lewis , Albert Cabellos-Aparicio | ||
Last updated | 2020-11-18 | ||
Replaces | draft-farinacci-lisp-rfc6830bis | ||
Stream | IETF | ||
Intended RFC status | Proposed Standard | ||
Formats | plain text xml pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Luigi Iannone | ||
Shepherd write-up | Show (last changed 2020-07-02) | ||
IESG | IESG state | IESG Evaluation::AD Followup | |
Consensus Boilerplate | Yes | ||
Telechat date |
Has enough positions to pass. |
||
Responsible AD | Deborah Brungard | ||
Send notices to | Luigi Iannone <ggx@gigix.net> | ||
IANA | IANA review state | Version Changed - Review Needed |
Network Working Group D. Farinacci Internet-Draft lispers.net Obsoletes: 6830 (if approved) V. Fuller Intended status: Standards Track vaf.net Internet Consulting Expires: May 22, 2021 D. Meyer 1-4-5.net D. Lewis Cisco Systems A. Cabellos (Ed.) UPC/BarcelonaTech November 18, 2020 The Locator/ID Separation Protocol (LISP) draft-ietf-lisp-rfc6830bis-36 Abstract This document describes the Data-Plane protocol for the Locator/ID Separation Protocol (LISP). LISP defines two namespaces, End-point Identifiers (EIDs) that identify end-hosts and Routing Locators (RLOCs) that identify network attachment points. With this, LISP effectively separates control from data, and allows routers to create overlay networks. LISP-capable routers exchange encapsulated packets according to EID-to-RLOC mappings stored in a local Map-Cache. LISP requires no change to either host protocol stacks or to underlay routers and offers Traffic Engineering, multihoming and mobility, among other features. This document obsoletes RFC 6830. 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 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." This Internet-Draft will expire on May 22, 2021. Farinacci, et al. Expires May 22, 2021 [Page 1] Internet-Draft LISP November 2020 Copyright Notice Copyright (c) 2020 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 (https://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. 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 . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1. Scope of Applicability . . . . . . . . . . . . . . . . . 4 2. Requirements Notation . . . . . . . . . . . . . . . . . . . . 5 3. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 5 4. Basic Overview . . . . . . . . . . . . . . . . . . . . . . . 8 4.1. Deployment on the Public Internet . . . . . . . . . . . . 10 4.2. Packet Flow Sequence . . . . . . . . . . . . . . . . . . 11 5. LISP Encapsulation Details . . . . . . . . . . . . . . . . . 13 5.1. LISP IPv4-in-IPv4 Header Format . . . . . . . . . . . . . 13 5.2. LISP IPv6-in-IPv6 Header Format . . . . . . . . . . . . . 14 5.3. Tunnel Header Field Descriptions . . . . . . . . . . . . 15 6. LISP EID-to-RLOC Map-Cache . . . . . . . . . . . . . . . . . 20 7. Dealing with Large Encapsulated Packets . . . . . . . . . . . 20 7.1. A Stateless Solution to MTU Handling . . . . . . . . . . 21 7.2. A Stateful Solution to MTU Handling . . . . . . . . . . . 22 8. Using Virtualization and Segmentation with LISP . . . . . . . 23 9. Routing Locator Selection . . . . . . . . . . . . . . . . . . 23 10. Routing Locator Reachability . . . . . . . . . . . . . . . . 25 10.1. Echo Nonce Algorithm . . . . . . . . . . . . . . . . . . 27 11. EID Reachability within a LISP Site . . . . . . . . . . . . . 28 12. Routing Locator Hashing . . . . . . . . . . . . . . . . . . . 28 13. Changing the Contents of EID-to-RLOC Mappings . . . . . . . . 30 13.1. Locator-Status-Bits . . . . . . . . . . . . . . . . . . 30 13.2. Database Map-Versioning . . . . . . . . . . . . . . . . 30 14. Multicast Considerations . . . . . . . . . . . . . . . . . . 31Show full document text