Generic UDP Encapsulation (GUE) for Network Virtualization Overlay
draft-hy-nvo3-gue-4-nvo-04

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Last updated 2016-10-28
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Network Working Group                                          L. Yong
Internet-Draft                                               Huawei USA
Intended status: Standard Track                              T. Herbert
                                                               Facebook
                                                                 O. Zia
                                                              Microsoft

Expires: April 2017                                    October 28, 2016

    Generic UDP Encapsulation (GUE) for Network Virtualization Overlay
                        draft-hy-nvo3-gue-4-nvo-04

Abstract

   This document describes network virtualization overlay encapsulation
   scheme by use of Generic UDP Encapsulation (GUE) [GUE]. It allocates
   one GUE optional flag and defines a 32 bit field for Virtual Network
   Identifier (VNID).

Status of This Document

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   This Internet-Draft will expire on April 28, 2017.

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   Copyright (c) 2016 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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Yong, Herbert, Zia                                             [Page 1]
Internet-Draft          GUE for NVO3                       October 2016

   respect to this document.  Code Components extracted from this
   document must include Simplified BSD License text as described in
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Table of Contents

   1. Introduction...................................................3
   2. Terminology....................................................3
      2.1. Requirements Language.....................................3
   3. Generic UDP Encapsulation (GUE) for NVO3.......................3
   4. Encapsulation/Decapsulation Operations.........................5
      4.1. Multi-Tenant Segregation..................................5
      4.2. Tenant Broadcast and Multicast Packets....................6
      4.3. Fragmentation.............................................6
      4.4. GUE Header Security.......................................6
      4.5. Tenant Packet Encryption..................................6
   5. IANA Considerations............................................7
   6. Security Considerations........................................7
   7. References.....................................................7
      7.1. Normative References......................................7
      7.2. Informative Reference.....................................8
   8. Authors' Addresses.............................................8

Yong, Herbert, Zia                                             [Page 2]
Internet-Draft          GUE for NVO3                       October 2016

1. Introduction

   Network Virtualization Overlay (NVO3) [RFC7365] provides a framework
   for a virtual network solution over an IP network in a DC with
   multi-tenant environment. Virtual network packets, i.e. tenant
   packets, between any pair of Network Virtualization Edges (NVE) are
   encapsulated at ingress NVE, sent from ingress NVE to egress NVE as
   IP packets, and decapsulated at egress NVE. This is known as a
   tunnel mechanism. This draft specifies use of Generic UDP
   Encapsulation (GUE) [GUE] for NVO3 packet encapsulation.

   GUE [GUE] as a generic UDP encapsulation provides several merits for
   NVO3 encapsulation. Hence, underlay IP network treats it the same
   was as other UDP applications, that are well supported by both IPv4
   and IPv6 underlay networks. GUE provides strong security transport
   options [GUEEXT] that NVO3 can leverage. In addition, GUE supports
   other options that NVO3 may use such as private data and
   extensibility. In addition, GUE control flag can be used for NVO3
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