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Internet Engineering Task Force                            Hansance Han
Internet Draft                                                 Ericsson
Intended status: Standards Track                            Xianghua Gu
                                                                Ericsson
                                                            Hua Lv
                                                                Ericsson
                                                            James Zhang
                                                                Ericsson
Expires: August 2017                                     February 27,
20177


                     Yang Data Model for PPP Protocol
                 draft-han-netmod-intf-ext-ppp-yang-02.txt


Abstract

   This document defines a YANG data model that can be used to
configure and manage PPP.

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
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

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   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on May 27, 2009.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors. All rights reserved.




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   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
   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. Terminology...............................................2
      1.2. Tree Diagrams.............................................3
   2. Design of Data Model...........................................3
      2.1. Overview..................................................3
   3. PPP YANG Module................................................4
   4. Security Considerations........................................7
   5. IANA Considerations............................................7
   6. Normative References...........................................7
   7. Appendix A.  Change Log........................................7

1. Introduction

   This document defines a YANG [RFC6020] data model for the management
   of PPP protocol.

   This data model includes configuration data and state data (status
   information and counters for the collection of statistics).

1.1. Terminology

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

   The following terms are used within this document:

   The following terms are defined in [RFC6241] and are not redefined
   here:

   o  client

   o  configuration data


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   o  server

   o  state data

   The following terms are defined in [RFC6020] and are not redefined
   here:

   o  augment

   o  data model

   o  data node

   o  presence container

1.2. Tree Diagrams

   A simplified graphical representation of the data model is used in
   this document.  The meaning of the symbols in these diagrams is as
   follows:

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

   o  Abbreviations before data node names: "rw" means configuration
   (read-write), and "ro" means state data (read-only).

   o  Symbols after data node names: "?" means an optional node, "!"
   means a presence container, and "*" denotes a list and leaf-list.

   o  Parentheses enclose choice and case nodes, and case nodes are also
   marked with a colon (":").

   o  Ellipsis ("...") stands for contents of subtrees that are not
   shown.

2. Design of Data Model

   The goal of this document is to define a data model that provides a
   common user interface to the PPP protocol.  There is very information
   that is designated as "mandatory", providing freedom for vendors to
   adapt this data model to their respective product implementations.

2.1. Overview

   The PPP YANG module defined in this document has all the common
   building blocks for the PPP protocol.

   module: ietf-if-ext-ppp
   augment /if:interfaces/if:interface:


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      +--rw ppp
         +--rw enabled?          boolean
         +--rw authentication! {ppp-authentication}?
            +--rw (authentication-mode)
            |  +--:(pap)
            |  |  +--rw pap         empty
            |  +--:(chap)
            |     +--rw chap        empty
            +--rw user?       string
            +--rw password!
               +--rw (chap-mode)
                  +--:(cipher)
                  |  +--rw cipher?   string
                  +--:(simple)
                     +--rw simple?   string

3. PPP YANG Module

   <CODE BEGINS> file "intf-if-ext-ppp@2016-11-19.yang"
   module ietf-if-ext-ppp {
        namespace "urn:ietf:params:xml:ns:yang:ietf-if-ext-ppp";
        prefix "ppp";

        import ietf-interfaces {
          prefix if;
        }

       import iana-crypt-hash {
         prefix ianach;
       }


        organization
          "IETF NETMOD (NETCONF Data Modeling Language) Working Group";

        contact
          "Editor:   Hansance Han
                     <mailto:hansance.han@ericsson.com>
           Editor:   Xianghua Gu
                     <mailto:xianghua.gu@ericsson.com>
           Editor:   Hua Lv
                     <mailto:hua.lv@ericsson.com>
           Editor:   James Zhang
                     <mailto:james.q.zhang@ericsson.com>";

         description
                "This module contains a collection of YANG definitions
   for managing ppp network interfaces.";



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         revision 2016-11-24 {
           description
             "Latest revision.";
           reference
             "RFC 7223: A YANG Data Model for Interface Management";
         }

         feature ppp-authentication {
           description
             "Indicates that the interface supports configuration of
              ppp authentication.";
         }

         augment "/if:interfaces/if:interface" {
          when "if:type = 'ppp'";

          description
          "PPP link protocol is extension under interface.";

          container ppp {
            description
              "A ppp interface must specify the global parameters.";

            leaf enabled {
              type boolean;
              default "true";
              description
                "This leaf contains the configured, desired state of the
                 ppp link-protocol.";
            }

            container authentication {
              if-feature ppp-authentication;
              presence "";
              description
              "The authentication configuration subtree.";

              choice authentication-mode {
                mandatory true;
                description
                "The authentication sub-mode pap and chap.";
                case pap {
                  leaf pap {
                    type empty;
                    description
                    "Authentication pap for PPP.";
                  }
                }
                case chap {


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                  leaf chap {
                    type empty;
                    description
                    "Authentication pap for PPP.";
                  }
                }
              }
              leaf user {
                  type string;
                  description "the user name string identifying ppp";
              }
              container password {
                presence "";
                description
                "The password configuraiton sub-tree.";
                choice chap-mode {
                  mandatory true;
                  description
                  "The chap mode configuration for cipher and simple.";
                  case cipher {
                    leaf cipher {
                      type ianach:crypt-hash;
                      description
                      "The password for cipher type.";
                    }
                  }
                  case simple {
                    leaf simple {
                      type ianach:crypt-hash;
                      description
                      "The password for simple type.";
                     }
                   }
                 }
               }
             }
            // other ppp specific params...
           }
         }
       }
   <CODE ENDS>










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4. Security Considerations

   The data model defined does not create any security implications.



5. IANA Considerations

   This draft does not request any IANA action.



6. Normative References

   [RFC7224] M. Bjorklund, "IANA Interface Type YANG model", RFC 7224
             May 2014, <https://tools.ietf.org/html/rfc7224>.

   [RFC1661] Simpson, W., "The Point-to-Point Protocol(PPP)", STD 51,
             RFC 1661, July 1999, <https://tools.ietf.org/html/rfc1661>.

   [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for
             the Network Configuration Protocol (NETCONF)", RFC 6020,
             DOI 10.17487/RFC6020, October 2010, <http://www.rfc-
             editor.org/info/rfc6020>.

   [RFC6021] Schoenwaelder, J., Ed., "Common YANG Data Types", RFC 6021,
             DOI 10.17487/RFC6021, October 2010, <http://www.rfc-
             editor.org/info/rfc6021>.

7. Appendix A.  Change Log

   A.1.  Changes from 00 to 01

      o  Changed namespace with "intf-if-ext-ppp".

      o  Updated file name "intf-if-ext-ppp".

   A.2.  Changes from 01 to 02

      o  Changed module name with "ietf-if-ext-ppp".



   Authors' Addresses





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   Hansance Han
   Ericsson (China) Communications Company Ltd.
   Ericsson Tower, No. 5 Lize East Street,
   Chaoyang District Beijing 100102, P.R. China

   Email: hansance.han@ericsson.com


   Hua Lv
   Ericsson (China) Communications Company Ltd.
   Ericsson Tower, No. 5 Lize East Street,
   Chaoyang District Beijing 100102, P.R. China

   Email: hua.lv@ericsson.com


   Xianghua Gu
   Ericsson (China) Communications Company Ltd.
   Ericsson Tower, No. 5 Lize East Street,
   Chaoyang District Beijing 100102, P.R. China

   Email: xianghua.gu@ericsson.com


   James Zhang
   Ericsson (China) Communications Company Ltd.
   Ericsson Tower, No. 5 Lize East Street,
   Chaoyang District Beijing 100102, P.R. China

   Email: james.q.zhang@ericsson.com





















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