BFD for VXLAN
draft-ietf-bfd-vxlan-06

The information below is for an old version of the document
Document Type Active Internet-Draft (bfd WG)
Last updated 2019-05-02 (latest revision 2018-12-26)
Replaces draft-spallagatti-bfd-vxlan
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Jeffrey Haas
Shepherd write-up Show (last changed 2019-01-02)
IESG IESG state AD Evaluation::Revised I-D Needed
Consensus Boilerplate Yes
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Send notices to Jeffrey Haas <jhaas@pfrc.org>
BFD                                                   S. Pallagatti, Ed.
Internet-Draft                                                   Rtbrick
Intended status: Standards Track                             S. Paragiri
Expires: June 29, 2019                                  Juniper Networks
                                                             V. Govindan
                                                            M. Mudigonda
                                                                   Cisco
                                                               G. Mirsky
                                                               ZTE Corp.
                                                       December 26, 2018

                             BFD for VXLAN
                        draft-ietf-bfd-vxlan-06

Abstract

   This document describes the use of the Bidirectional Forwarding
   Detection (BFD) protocol in Virtual eXtensible Local Area Network
   (VXLAN) overlay networks.

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 June 29, 2019.

Copyright 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
   (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

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   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  Use cases . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Deployment  . . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  BFD Packet Transmission over VXLAN Tunnel . . . . . . . . . .   6
     5.1.  BFD Packet Encapsulation in VXLAN . . . . . . . . . . . .   7
   6.  Reception of BFD packet from VXLAN Tunnel . . . . . . . . . .   8
     6.1.  Demultiplexing of the BFD packet  . . . . . . . . . . . .   8
   7.  Use of reserved VNI . . . . . . . . . . . . . . . . . . . . .   9
   8.  Echo BFD  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   9
   11. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  10
   12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     13.2.  Informational References . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   "Virtual eXtensible Local Area Network" (VXLAN) [RFC7348]. provides
   an encapsulation scheme that allows building an overlay network by
   decoupling the address space of the attached virtual hosts from that
   of the network.

   One use of VXLAN is in data centers interconnecting VMs of a tenant.
   VXLAN addresses requirements of the Layer 2 and Layer 3 data center
   network infrastructure in the presence of VMs in a multi-tenant
   environment, discussed in section 3 [RFC7348], by providing Layer 2
   overlay scheme on a Layer 3 network.  Another use is as an
   encapsulation for Ethernet VPN [RFC8365].

   This document is written assuming the use of VXLAN for virtualized
   hosts and refers to VMs and VTEPs in hypervisors.  However, the
   concepts are equally applicable to non-virtualized hosts attached to
   VTEPs in switches.

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