LISP Generic Protocol Extension
draft-lewis-lisp-gpe-03

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Last updated 2017-12-13
Replaced by draft-ietf-lisp-gpe
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Internet Engineering Task Force                                 D. Lewis
Internet-Draft                                                     Cisco
Intended status: Informational                                  J. Lemon
Expires: June 16, 2018                                          Broadcom
                                                              P. Agarwal
                                                                Innovium
                                                              L. Kreeger

                                                                P. Quinn
                                                                M. Smith
                                                                N. Yadav
                                                           F. Maino, Ed.
                                                                   Cisco
                                                       December 13, 2017

                    LISP Generic Protocol Extension
                        draft-lewis-lisp-gpe-03

Abstract

   This draft describes extending the Locator/ID Separation Protocol
   (LISP), via changes to the LISP header, to support multi-protocol
   encapsulation.

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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   This Internet-Draft will expire on June 16, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Lewis, et al.             Expires June 16, 2018                 [Page 1]
Internet-Draft       LISP Generic Protocol Extension       December 2017

   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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Definition of Terms . . . . . . . . . . . . . . . . . . .   3
   2.  LISP Header Without Protocol Extensions . . . . . . . . . . .   3
   3.  Generic Protocol Extension for LISP (LISP-GPE)  . . . . . . .   3
   4.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .   5
     4.1.  Type of Service . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  VLAN Identifier (VID) . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   LISP, as defined in [RFC6830] and extended in
   [I-D.ietf-lisp-rfc6830bis], defines an encapsulation format that
   carries IPv4 or IPv6 (henceforth referred to as IP) packets in a LISP
   header and outer UDP/IP transport.

   The LISP header does not specify the protocol being encapsulated and
   therefore is currently limited to encapsulating only IP packet
   payloads.  Other protocols, most notably VXLAN [RFC7348] (which
   defines a similar header format to LISP), are used to encapsulate L2
   protocols such as Ethernet.

   This document defines an extension for the LISP header, as defined in
   [I-D.ietf-lisp-rfc6830bis], to indicate the inner protocol, enabling
   the encapsulation of Ethernet, IP or any other desired protocol all
   the while ensuring compatibility with existing LISP deployments.

   A flag in the LISP header, called the P-bit, is used to signal the
   presence of the 8-bit Next Protocol field.  The Next Protocol field,

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