Locator/ID Separation Protocol (LISP)
draft-ietf-lisp-22

The information below is for an old version of the document
Document Type Active Internet-Draft (lisp WG)
Last updated 2012-02-14 (latest revision 2012-02-12)
Stream IETF
Intended RFC status Experimental
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Stream WG state WG Document
Consensus Unknown
Document shepherd None
IESG IESG state RFC Ed Queue
Telechat date
Responsible AD Jari Arkko
IESG note Joel Halpern (jmh@joelhalpern.com) is the document shepherd.
Send notices to lisp-chairs@tools.ietf.org, draft-ietf-lisp@tools.ietf.org
RFC Editor RFC Editor state MISSREF
Network Working Group                                       D. Farinacci
Internet-Draft                                                 V. Fuller
Intended status: Experimental                                   D. Meyer
Expires: August 15, 2012                                        D. Lewis
                                                           cisco Systems
                                                       February 12, 2012

                 Locator/ID Separation Protocol (LISP)
                           draft-ietf-lisp-22

Abstract

   This draft describes a network layer based protocol that enables
   separation of IP addresses into two new numbering spaces: Endpoint
   Identifiers (EIDs) and Routing Locators (RLOCs).  No changes are
   required to either host protocol stacks or to the "core" of the
   Internet infrastructure.  LISP can be incrementally deployed, without
   a "flag day", and offers traffic engineering, multi-homing, and
   mobility benefits to early adopters, even when there are relatively
   few LISP-capable sites.

   Design and development of LISP was largely motivated by the problem
   statement produced by the October 2006 IAB Routing and Addressing
   Workshop.

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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   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 August 15, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Farinacci, et al.        Expires August 15, 2012                [Page 1]
Internet-Draft    Locator/ID Separation Protocol (LISP)    February 2012

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Requirements Notation  . . . . . . . . . . . . . . . . . . . .  5
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  6
   3.  Definition of Terms  . . . . . . . . . . . . . . . . . . . . .  8
   4.  Basic Overview . . . . . . . . . . . . . . . . . . . . . . . . 14
     4.1.  Packet Flow Sequence . . . . . . . . . . . . . . . . . . . 16
   5.  LISP Encapsulation Details . . . . . . . . . . . . . . . . . . 18
     5.1.  LISP IPv4-in-IPv4 Header Format  . . . . . . . . . . . . . 19
     5.2.  LISP IPv6-in-IPv6 Header Format  . . . . . . . . . . . . . 19
     5.3.  Tunnel Header Field Descriptions . . . . . . . . . . . . . 21
     5.4.  Dealing with Large Encapsulated Packets  . . . . . . . . . 25
       5.4.1.  A Stateless Solution to MTU Handling . . . . . . . . . 25
       5.4.2.  A Stateful Solution to MTU Handling  . . . . . . . . . 26
     5.5.  Using Virtualization and Segmentation with LISP  . . . . . 26
   6.  EID-to-RLOC Mapping  . . . . . . . . . . . . . . . . . . . . . 28
     6.1.  LISP IPv4 and IPv6 Control Plane Packet Formats  . . . . . 28
       6.1.1.  LISP Packet Type Allocations . . . . . . . . . . . . . 30
       6.1.2.  Map-Request Message Format . . . . . . . . . . . . . . 30
       6.1.3.  EID-to-RLOC UDP Map-Request Message  . . . . . . . . . 33
       6.1.4.  Map-Reply Message Format . . . . . . . . . . . . . . . 34
       6.1.5.  EID-to-RLOC UDP Map-Reply Message  . . . . . . . . . . 38
       6.1.6.  Map-Register Message Format  . . . . . . . . . . . . . 40
       6.1.7.  Map-Notify Message Format  . . . . . . . . . . . . . . 42
       6.1.8.  Encapsulated Control Message Format  . . . . . . . . . 43
     6.2.  Routing Locator Selection  . . . . . . . . . . . . . . . . 45
     6.3.  Routing Locator Reachability . . . . . . . . . . . . . . . 47
       6.3.1.  Echo Nonce Algorithm . . . . . . . . . . . . . . . . . 49
       6.3.2.  RLOC Probing Algorithm . . . . . . . . . . . . . . . . 50
     6.4.  EID Reachability within a LISP Site  . . . . . . . . . . . 51
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