YANG Data Model for Network Address Translation (NAT)
draft-sivakumar-yang-nat-06

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Network Working Group                                       S. Sivakumar
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                            M. Boucadair
Expires: September 29, 2017                               France Telecom
                                                           S. Vinapamula
                                                        Juniper Networks
                                                          March 28, 2017

         YANG Data Model for Network Address Translation (NAT)
                      draft-sivakumar-yang-nat-06

Abstract

   For the sake of network automation and the need for programming NAT
   function in particular, a data model for configuring and managing the
   NAT device is essential.  This document defines a YANG data model for
   the NAT function.  Both the NAT44 and NAT64 are covered in this
   document.

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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   Internet-Drafts are draft documents valid for a maximum of six months
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   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 September 29, 2017.

Copyright Notice

   Copyright (c) 2017 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
   (http://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
   to this document.  Code Components extracted from this document must

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   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
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
     1.2.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Overview of the NAT YANG Data Model . . . . . . . . . . . . .   3
   3.  NAT YANG Module . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  31
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  32
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  32
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  32
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  33
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  34

1.  Introduction

   This document defines a data model for Network Address Translation
   (NAT) using the YANG data modeling language [RFC6020].  Traditional
   NAT is defined in [RFC2663] and Carrier Grade NAT is defined in
   [RFC6888].  This document covers the NAT features in both documents.
   This document also covers the NAT64 as defined in [RFC6146].

   This document assumes [RFC4787][RFC5382][RFC5508] are enabled by
   default.

1.1.  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].

   The usage of the term "NAT device" in this document refer to any
   NAT44 and NAT64 devices.  This document uses the term "Session" as it
   is defined in [RFC2663] and the term BIB as it is defined in
   [RFC6146].

1.2.  Tree Diagrams

   The meaning of the symbols in these diagrams is as follows:

   o  Brackets "[" and "]" enclose list keys.

   o  Curly braces "{" and "}" contain names of optional features that
      make the corresponding node conditional.

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