Geneve encapsulation for Group Based Policy
draft-lemon-geneve-gbp-00

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Internet Engineering Task Force                            J. Lemon, Ed.
Internet-Draft                                                  Broadcom
Intended status: Standards Track                                M. Smith
Expires: June 21, 2018                                             Cisco
                                                       December 18, 2017

              Geneve encapsulation for Group Based Policy
                       draft-lemon-geneve-gbp-00

Abstract

   This document describes how a Group Policy Identifier is encapsulated
   in Geneve for the purposes of policy enforcement.

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   This Internet-Draft will expire on June 21, 2018.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Requirement Language  . . . . . . . . . . . . . . . . . .   2
     2.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Group Based Policy Encapsulation in Geneve  . . . . . . . . .   2
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  Normative References  . . . . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   This document defines the group-based policy (GBP) encapsulation for
   Geneve [I-D.ietf-nvo3-geneve].  The GBP sub-header carries a 16-bit
   group policy ID that is semantically equivalent to the 16-bit group
   policy ID defined in [I-D.smith-vxlan-group-policy].

2.  Conventions

2.1.  Requirement 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].

2.2.  Abbreviations

   Abbreviations used in this document:

   GBP:       Group-Based Policy

   Geneve:    Generic Network Virtualization Encapsulation

3.  Group Based Policy Encapsulation in Geneve

   For encapsulating group policy IDs into Geneve [I-D.ietf-nvo3-geneve]
   the group policy ID field is included in the Geneve header using
   tunnel options.  The group policy ID field uses a tunnel option class
   specific for GBP.  In an administrative domain where GBP is used,
   insertion of the GBP tunnel option in Geneve is enabled at the Geneve
   tunnel endpoints.  The Geneve header is defined in
   [I-D.ietf-nvo3-geneve].  GBP semantics are described in
   [I-D.smith-vxlan-group-policy].

   The packet format of the GBP ID when encapsulated in Geneve is
   defined below.

Lemon & Smith             Expires June 21, 2018                 [Page 2]
Internet-Draft          GBP Geneve Encapsulation           December 2017

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+
   |Ver|  Opt Len  |O|C|    Rsvd.  |          Protocol Type        |  |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Hdr
   |        Virtual Network Identifier (VNI)       |    Reserved   |  |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+
   |  Option Class = GBP           |  Type         |R|R|R| Length  |  |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ GBP
   |            GBP ID             |A|D|    Reserved               | ID
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