NVO3 Encapsulation Considerations
draft-ietf-nvo3-encap-02

Document Type Active Internet-Draft (nvo3 WG)
Last updated 2018-09-14
Stream IETF
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
INTERNET-DRAFT                                         Sami Boutros(Ed.)
Intended Status: Informational                                    VMware

Expires: March 18, 2019                               September 14, 2018

                   NVO3 Encapsulation Considerations
                        draft-ietf-nvo3-encap-02

Abstract

   As communicated by WG Chairs, the IETF NVO3 chairs and Routing Area
   director have chartered a design team to take forward the
   encapsulation discussion and see if there is potential to design a
   common encapsulation that addresses the various technical concerns.

   There are implications of different encapsulations in real
   environments consisting of both software and hardware implementations
   and spanning multiple data centers. For example, OAM functions such
   as path MTU discovery become challenging with multiple encapsulations
   along the data path.

   The design team recommend Geneve with few modifications as the common
   encapsulation, more details are described in section 7.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as
   Internet-Drafts.

   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."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/1id-abstracts.html

 

nvo3-encap               Expires March 18, 2019                 [Page 1]
INTERNET DRAFT     NVO3 Encapsulation Considerations  September 14, 2018

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

Copyright and License 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
   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
   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. Problem Statement . . . . . . . . . . . . . . . . . . . . . . .  4
   2. Design Team Goals . . . . . . . . . . . . . . . . . . . . . . .  4
   3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . .  4
   5. Issues with current Encapsulations  . . . . . . . . . . . . . .  5
     5.1 Geneve . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     5.2 GUE  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     5.3 VXLAN-GPE  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   6. Common Encapsulation Considerations . . . . . . . . . . . . . .  6
     6.1 Current Encapsulations . . . . . . . . . . . . . . . . . . .  6
     6.2 Useful Extensions Use cases  . . . . . . . . . . . . . . . .  6
       6.2.1. Telemetry extensions. . . . . . . . . . . . . . . . . .  6
       6.2.2. Security/Integrity extensions . . . . . . . . . . . . .  7
       6.2.3. Group Base Policy . . . . . . . . . . . . . . . . . . .  7
     6.3 Hardware Considerations  . . . . . . . . . . . . . . . . . .  7
     6.4 Extension Size . . . . . . . . . . . . . . . . . . . . . . .  8
     6.5 Extension Ordering . . . . . . . . . . . . . . . . . . . . .  9
     6.6 TLV vs Bit Fields  . . . . . . . . . . . . . . . . . . . . .  9
     6.7 Control Plane Considerations . . . . . . . . . . . . . . . . 10
     6.8 Split NVE  . . . . . . . . . . . . . . . . . . . . . . . . . 11
     6.9 Larger VNI Considerations  . . . . . . . . . . . . . . . . . 11
   7. Design team recommendations . . . . . . . . . . . . . . . . . . 11
   8. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 14
   9. Security Considerations . . . . . . . . . . . . . . . . . . . . 14
   10.  References  . . . . . . . . . . . . . . . . . . . . . . . . . 14
 

nvo3-encap               Expires March 18, 2019                 [Page 2]
INTERNET DRAFT     NVO3 Encapsulation Considerations  September 14, 2018

     10.1  Normative References . . . . . . . . . . . . . . . . . . . 14
     10.2  Informative References . . . . . . . . . . . . . . . . . . 15
Show full document text