VXLAN Group Policy Option
draft-smith-vxlan-group-policy-04

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Internet Engineering Task Force                                 M. Smith
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Informational                                L. Kreeger
Expires: April 23, 2018
                                                        October 20, 2017

                       VXLAN Group Policy Option
                   draft-smith-vxlan-group-policy-04

Abstract

   This document defines a backward compatible extension to Virtual
   eXtensible Local Area Network (VXLAN) that allows a Tenant System
   Interface (TSI) Group Identifier to be carried for the purposes of
   policy enforcement.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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Smith & Kreeger          Expires April 23, 2018                 [Page 1]
Internet-Draft          VXLAN Group Policy Option           October 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
     1.2.  Definition of Terms . . . . . . . . . . . . . . . . . . .   3
   2.  Approach  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  VXLAN Group Based Policy Extension  . . . . . . . . . . .   3
   3.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .   4
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The Group Based Policy [GROUPPOLICY][GROUPBASEDPOLICY] model defines
   an application-centric policy model where the application
   connectivity requirements are specified in a manner that is
   independent of the underlying network topology.  In this model,
   Tenant System Interfaces (TSIs) are assigned to Tenant System
   Interface (TSI) Groups.  Each TSI Group consists of TSIs that share
   the same network policies and requirements.  Network policies are
   defined between the TSI Group of the traffic source and the TSI Group
   of the traffic destination.  These policies are deployed when the TSI
   attaches to the network.

   In many situations, the TSI to TSI Group mapping is known only at the
   Network Virtualization Edge (NVE) that the TSI is attached.  This
   implies that the TSI Group of a packet destination may not be known
   until the packet reaches the egress NVE where the packet destination
   is attached.  In such situations, it is critical to retain the source
   TSI Group membership with the packet so that policy can be applied at
   the egress NVE.

   This document defines a backward compatible extension to VXLAN
   [RFC7348] that allows the source TSI Group identifier to be carried
   so that policy can be applied when the destination TSI Group is
   determined at the egress NVE.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
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