Generic Protocol Extension for VXLAN (VXLAN-GPE)
draft-ietf-nvo3-vxlan-gpe-10

Document Type Active Internet-Draft (nvo3 WG)
Last updated 2020-07-13
Replaces draft-quinn-vxlan-gpe
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Network Working Group                                      F. Maino, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Informational                           L. Kreeger, Ed.
Expires: January 14, 2021                                         Arrcus
                                                           U. Elzur, Ed.
                                                                   Intel
                                                           July 13, 2020

            Generic Protocol Extension for VXLAN (VXLAN-GPE)
                      draft-ietf-nvo3-vxlan-gpe-10

Abstract

   This document describes extending Virtual eXtensible Local Area
   Network (VXLAN), via changes to the VXLAN header, with four new
   capabilities: support for multi-protocol encapsulation, support for
   operations, administration and maintenance (OAM) signaling, support
   for ingress-replicated BUM Traffic (i.e.  Broadcast, Unknown unicast,
   or Multicast), and explicit versioning.  New protocol capabilities
   can be introduced via shim headers.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

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
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 14, 2021.

Maino, Ed., et al.      Expires January 14, 2021                [Page 1]
Internet-Draft                  VXLAN-GPE                      July 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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  VXLAN Without Protocol Extension  . . . . . . . . . . . . . .   3
   3.  Generic Protocol Extension for VXLAN (VXLAN-GPE)  . . . . . .   4
     3.1.  VXLAN-GPE Header  . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Multi Protocol Support  . . . . . . . . . . . . . . . . .   5
     3.3.  Replicated BUM Traffic  . . . . . . . . . . . . . . . . .   7
     3.4.  OAM Support . . . . . . . . . . . . . . . . . . . . . . .   7
     3.5.  Version Bits  . . . . . . . . . . . . . . . . . . . . . .   8
   4.  Outer Encapsulations  . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Inner VLAN Tag Handling . . . . . . . . . . . . . . . . .  11
     4.2.  Fragmentation Considerations  . . . . . . . . . . . . . .  12
   5.  Implementation and Deployment Considerations  . . . . . . . .  12
     5.1.  Applicability Statement . . . . . . . . . . . . . . . . .  12
     5.2.  Congestion Control Functionality  . . . . . . . . . . . .  13
     5.3.  UDP Checksum  . . . . . . . . . . . . . . . . . . . . . .  13
       5.3.1.  UDP Zero Checksum Handling with IPv6  . . . . . . . .  13
   6.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .  15
     6.1.  VXLAN VTEP to VXLAN-GPE VTEP  . . . . . . . . . . . . . .  15
     6.2.  VXLAN-GPE VTEP to VXLAN VTEP  . . . . . . . . . . . . . .  15
     6.3.  VXLAN-GPE UDP Ports . . . . . . . . . . . . . . . . . . .  15
     6.4.  VXLAN-GPE and Encapsulated IP Header Fields . . . . . . .  15
   7.  VXLAN-GPE Examples  . . . . . . . . . . . . . . . . . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  17
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  18
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19
     11.1.  UDP Port . . . . . . . . . . . . . . . . . . . . . . . .  19
     11.2.  VXLAN-GPE Next Protocol  . . . . . . . . . . . . . . . .  19
     11.3.  VXLAN-GPE Flag and Reserved Bits . . . . . . . . . . . .  19
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