OTN Tunnel YANG Model
draft-ietf-ccamp-otn-tunnel-model-09

Document Type Active Internet-Draft (ccamp WG)
Last updated 2019-11-02
Replaces draft-sharma-ccamp-otn-tunnel-model
Stream IETF
Intended RFC status (None)
Formats plain text xml pdf htmlized bibtex
Yang Validation 13 errors, 0 warnings.
Additional URLs
- Yang catalog entry for ietf-otn-tunnel@2019-11-02.yang
- Yang impact analysis for draft-ietf-ccamp-otn-tunnel-model
- Mailing list discussion
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
CCAMP Working Group                                             H. Zheng
Internet-Draft                                                   I. Busi
Intended status: Standards Track                     Huawei Technologies
Expires: May 5, 2020                                          S. Belotti
                                                                   Nokia
                                                                V. Lopez
                                                              Telefonica
                                                                   Y. Xu
                                                                   CAICT
                                                        November 2, 2019

                         OTN Tunnel YANG Model
                  draft-ietf-ccamp-otn-tunnel-model-09

Abstract

   This document describes the YANG data model for OTN Tunnels.

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).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   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."

   This Internet-Draft will expire on May 5, 2020.

Copyright Notice

   Copyright (c) 2019 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
   (https://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

Zheng, et al.              Expires May 5, 2020                  [Page 1]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Notations . . . . . . . . . . . . . . . . . .   2
   3.  OTN Tunnel Model Description  . . . . . . . . . . . . . . . .   3
     3.1.  Overview of OTN Tunnel Model  . . . . . . . . . . . . . .   3
     3.2.  OTN-specific Parameters in Tunnel Model . . . . . . . . .   3
     3.3.  OTN Path Compute RPC  . . . . . . . . . . . . . . . . . .   4
   4.  OTN Tunnel YANG Tree  . . . . . . . . . . . . . . . . . . . .   4
   5.  OTN Tunnel YANG Code  . . . . . . . . . . . . . . . . . . . .  14
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  30
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  31
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  32
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  32
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  33
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  33
     10.2.  Informative References . . . . . . . . . . . . . . . . .  34
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  35

1.  Introduction

   OTN transport networks, specified in [ITU-Tg709], can carry various
   types of client services.  In many cases, the client signal is
   carried over an OTN tunnel across connected domains in a multi-domain
   network.  These OTN services can either be transported or switched in
   the OTN network.  If an OTN tunnel is switched, then additional
   parameters need to be provided to create a Mux OTN service.

   This document provides YANG model for creating OTN tunnel.  The model
   augments the TE Tunnel model.

2.  Terminology and Notations

   A simplified graphical representation of the data model is used in
   this document.  The meaning of the symbols in the YANG data tree
   presented later in this draft is defined in [RFC8340].  They are
   provided below for reference.

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

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

Zheng, et al.              Expires May 5, 2020                  [Page 2]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   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.

   o  More OTN specific terms can be found in
      [I-D.ietf-ccamp-otn-topo-yang].

3.  OTN Tunnel Model Description

3.1.  Overview of OTN Tunnel Model

   The OTN tunnel model is using TE tunnel [I-D.ietf-teas-yang-te] as a
   basic model and augment to the TE tunnel with OTN-specific
   parameters, including the bandwidth information and label
   information.  It is also worth noting that the OTN tunnel
   provisioning is usually based on the OTN topology.  Therefore the OTN
   tunnel model is usually used together with OTN topology model
   specified in [I-D.ietf-ccamp-otn-topo-yang].  The OTN tunnel model
   also imports a few type modules, including ietf-otn-types, ietf-te-
   types and ietf-inet-types.

   More scenarios and model applications can be found in
   [I-D.ietf-ccamp-transport-nbi-app-statement] and
   [I-D.ietf-teas-actn-yang].  The current model is following the YANG
   language specification as [RFC7950], and the corresponding protocol
   is recommended to be Netconf protocol in [RFC6241] or RESTconf
   protocol in [RFC8040].

   The YANG module ietf-otn-tunnel defined in this document conforms to
   the Network Management Datastore Architecture (NMDA) defined in
   [RFC8342].

3.2.  OTN-specific Parameters in Tunnel Model

   OTN specific parameters have been augmenting to the TE tunnel models.
   The attributes on both of the source and destination need to be
   configured when setting up the tunnel.  Typical parameters, including
   client signal, TPN, TSG and corresponding tributary slot information,
   are required in the OTN tunnel model.  These parameters are
   consistent with the framework in [RFC7062], and the specification in
   [RFC7138] and [RFC7139].

   The OTN bandwidth information has been augmenting to various sections
   of TE tunnel models, including tunnel bandwidth, primary path
   bandwidth and so on.  The OTN label information has been augmenting
   to label hop of a group of routing objects and also LSPs.

Zheng, et al.              Expires May 5, 2020                  [Page 3]
Internet-Draft            OTN Tunnel YANG Model            November 2019

3.3.  OTN Path Compute RPC

   Similarly with TE tunnel, a 'compute-only' mode of OTN tunnel model
   is also supported for stateful path computation.  Given the OTN
   tunnel computed, the client may query and/or subscribe on the tunnel
   to be notified whenever it changes.  In addition, also a stateless
   Remote Procedural Call (RPC) is specified.  On receiving this RPC,
   the provider is expected to compute the available path subject to the
   constraints specified in RPC and feedback to the client without any
   changing of the OTN network or the OTN tunnels.

4.  OTN Tunnel YANG Tree

   module: ietf-otn-tunnel
     augment /te:te/te:tunnels/te:tunnel:
       +--rw src-client-signal?   identityref
       +--rw dst-client-signal?   identityref
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:te-bandwidth
               /te:technology:
       +--:(otn)
          +--rw odu-type?   identityref
     augment /te:te/te:tunnels/te:tunnel/te:te-bandwidth
               /te:technology:
       +--:(otn)
          +--rw odu-type?   identityref
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:te-bandwidth
               /te:technology:
       +--:(otn)
          +--rw odu-type?   identityref
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:te-bandwidth/te:technology:
       +--:(otn)
          +--rw odu-type?   identityref
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:te-bandwidth
               /te:technology:
       +--:(otn)
          +--rw odu-type?   identityref
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint
               /te:explicit-route-objects-always
               /te:route-object-exclude-always/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)

Zheng, et al.              Expires May 5, 2020                  [Page 4]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint
               /te:explicit-route-objects-always
               /te:route-object-include-exclude/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:path-in-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:path-out-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:globals/te:named-path-constraints

Zheng, et al.              Expires May 5, 2020                  [Page 5]
Internet-Draft            OTN Tunnel YANG Model            November 2019

               /te:named-path-constraint/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:globals/te:named-path-constraints
               /te:named-path-constraint/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:optimizations
               /te:algorithm/te:metric/te:optimization-metric
               /te:explicit-route-exclude-objects
               /te:route-object-exclude-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:optimizations
               /te:algorithm/te:metric/te:optimization-metric
               /te:explicit-route-include-objects
               /te:route-object-include-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path
               /te:explicit-route-objects-always
               /te:route-object-exclude-always/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string

Zheng, et al.              Expires May 5, 2020                  [Page 6]
Internet-Draft            OTN Tunnel YANG Model            November 2019

     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path
               /te:explicit-route-objects-always
               /te:route-object-include-exclude/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:

Zheng, et al.              Expires May 5, 2020                  [Page 7]
Internet-Draft            OTN Tunnel YANG Model            November 2019

       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path
               /te:computed-paths-properties
               /te:computed-path-properties/te:path-properties
               /te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:lsps/te:lsp
               /te:lsp-record-route-information
               /te:lsp-record-route-information/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:lsps/te:lsp
               /te:path-properties/te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path

Zheng, et al.              Expires May 5, 2020                  [Page 8]
Internet-Draft            OTN Tunnel YANG Model            November 2019

               /te:optimizations/te:algorithm/te:metric
               /te:optimization-metric
               /te:explicit-route-exclude-objects
               /te:route-object-exclude-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:optimizations/te:algorithm/te:metric
               /te:optimization-metric
               /te:explicit-route-include-objects
               /te:route-object-include-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:explicit-route-objects-always
               /te:route-object-exclude-always/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:explicit-route-objects-always
               /te:route-object-include-exclude/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-in-segment/te:label-restrictions
               /te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths

Zheng, et al.              Expires May 5, 2020                  [Page 9]
Internet-Draft            OTN Tunnel YANG Model            November 2019

               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-in-segment/te:label-restrictions
               /te:label-restriction/te:label-start/te:te-label
               /te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-in-segment/te:label-restrictions
               /te:label-restriction/te:label-end/te:te-label
               /te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-out-segment/te:label-restrictions
               /te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-out-segment/te:label-restrictions
               /te:label-restriction/te:label-start/te:te-label
               /te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:path-out-segment/te:label-restrictions
               /te:label-restriction/te:label-end/te:te-label
               /te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)

Zheng, et al.              Expires May 5, 2020                 [Page 10]
Internet-Draft            OTN Tunnel YANG Model            November 2019

             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:computed-paths-properties
               /te:computed-path-properties/te:path-properties
               /te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:lsps/te:lsp/te:lsp-record-route-information
               /te:lsp-record-route-information/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-primary-paths
               /te:p2p-primary-path/te:p2p-primary-reverse-path
               /te:lsps/te:lsp/te:path-properties
               /te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:optimizations
               /te:algorithm/te:metric/te:optimization-metric
               /te:explicit-route-exclude-objects
               /te:route-object-exclude-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:optimizations
               /te:algorithm/te:metric/te:optimization-metric
               /te:explicit-route-include-objects

Zheng, et al.              Expires May 5, 2020                 [Page 11]
Internet-Draft            OTN Tunnel YANG Model            November 2019

               /te:route-object-include-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path
               /te:explicit-route-objects-always
               /te:route-object-exclude-always/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path
               /te:explicit-route-objects-always
               /te:route-object-include-exclude/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--rw tpn?       uint16
          +--rw tsg?       identityref
          +--rw ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-in-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?

Zheng, et al.              Expires May 5, 2020                 [Page 12]
Internet-Draft            OTN Tunnel YANG Model            November 2019

             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction:
       +--rw range-type?      identityref
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-start/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:path-out-segment
               /te:label-restrictions/te:label-restriction
               /te:label-end/te:te-label/te:technology:
       +--:(otn)
          +--rw (otn-label-type)?
             +--:(tributary-port)
             |  +--rw tpn?   uint16
             +--:(tributary-slot)
                +--rw ts?    uint16
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path
               /te:computed-paths-properties
               /te:computed-path-properties/te:path-properties
               /te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:lsps/te:lsp
               /te:lsp-record-route-information
               /te:lsp-record-route-information/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:

Zheng, et al.              Expires May 5, 2020                 [Page 13]
Internet-Draft            OTN Tunnel YANG Model            November 2019

       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:tunnels/te:tunnel/te:p2p-secondary-paths
               /te:p2p-secondary-path/te:lsps/te:lsp
               /te:path-properties/te:path-route-objects
               /te:path-computed-route-object/te:type/te:label
               /te:label-hop/te:te-label/te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string
     augment /te:te/te:lsps-state/te:lsp
               /te:lsp-record-route-information
               /te:lsp-record-route-information/te:type
               /te:label/te:label-hop/te:te-label
               /te:technology:
       +--:(otn)
          +--ro tpn?       uint16
          +--ro tsg?       identityref
          +--ro ts-list?   string

5.  OTN Tunnel YANG Code

  <CODE BEGINS>file "ietf-otn-tunnel@2019-11-02.yang"
  module ietf-otn-tunnel {
    yang-version 1.1;
    namespace "urn:ietf:params:xml:ns:yang:ietf-otn-tunnel";
    prefix "otn-tunnel";

    import ietf-te {
      prefix "te";
      reference
      "I-D.ietf-teas-yang-te: A YANG Data Model for Traffic Engineering
      Tunnels and Interfaces. ";
    }

    import ietf-layer1-types {
      prefix "layer1-types";
      reference
      "I-D.ietf-ccamp-layer1-types:
          A YANG Data Model for Layer 1 Types. ";

Zheng, et al.              Expires May 5, 2020                 [Page 14]
Internet-Draft            OTN Tunnel YANG Model            November 2019

    }

    organization
      "IETF CCAMP Working Group";
    contact
      "WG Web: <http://tools.ietf.org/wg/ccamp/>
       WG List: <mailto:ccamp@ietf.org>

       Editor: Haomian Zheng
               <mailto:zhenghaomian@huawei.com>

       Editor: Italo Busi
               <mailto:italo.busi@huawei.com>

       Editor: Sergio Belotti
               <mailto:sergio.belotti@nokia.com>

       Editor: Victor Lopez
               <mailto:victor.lopezalvarez@telefonica.com>

       Editor: Yunbin Xu
               <mailto:xuyunbin@ritt.cn>";

    description
      "This module defines a model for OTN Tunnel Services.
          The model fully conforms to the Network Management
          Datastore Architecture (NMDA).

      Copyright (c) 2019 IETF Trust and the persons
          identified as authors of the code.  All rights reserved.

          Redistribution and use in source and binary forms, with or
          without modification, is permitted pursuant to, and subject
          to the license terms contained in, the Simplified BSD License
          set forth in Section 4.c of the IETF Trust's Legal Provisions
          Relating to IETF Documents
          (https://trustee.ietf.org/license-info).
          This version of this YANG module is part of RFC XXXX; see
      the RFC itself for full legal notices.";

    revision "2019-11-02" {
      description
        "Initial Revision";
      reference
        "RFC XXXX: OTN Tunnel YANG Model";
      // RFC Ed.: replace XXXX with actual RFC number, update date
      // information and remove this note
    }

Zheng, et al.              Expires May 5, 2020                 [Page 15]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   /*
    * Groupings
    */

    grouping otn-tunnel-attributes {
      description "Parameters for OTN tunnel";

      leaf src-client-signal {
        type identityref {
          base layer1-types:client-signal;
        }
        description
          "Client signal at the source endpoint of the tunnel. ";
      }

      leaf dst-client-signal {
        type identityref {
          base layer1-types:client-signal;
        }
        description
          "Client signal at the destination endpoint of the tunnel";
      }

   }

   /*
    * Data nodes
    */

    augment "/te:te/te:tunnels/te:tunnel" {
      description
        "Augment with additional parameters required for OTN service";
      uses otn-tunnel-attributes;
    }

    /*
     * Augment TE bandwidth
     */

           /* Augment bandwidth of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/"
          + "te:te-bandwidth/te:technology" {
      description "OTN bandwidth.";
      case otn {
        uses layer1-types:otn-path-bandwidth;
      }
    }

Zheng, et al.              Expires May 5, 2020                 [Page 16]
Internet-Draft            OTN Tunnel YANG Model            November 2019

    /* Augment bandwdith of tunnel */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:te-bandwidth/te:technology" {
      description "OTN bandwidth.";
      case otn {
        uses layer1-types:otn-path-bandwidth;
      }
    }

    /* Augment bandwidth of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:te-bandwidth/te:technology" {
      description "OTN bandwidth.";
      case otn {
        uses layer1-types:otn-path-bandwidth;
      }
    }

    /* Augment bandwidth of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:te-bandwidth/te:technology" {
      description "OTN bandwidth.";
      case otn {
        uses layer1-types:otn-path-bandwidth;
      }
    }

    /* Augment bandwidth of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:te-bandwidth/te:technology" {
      description "OTN bandwidth.";
      case otn {
        uses layer1-types:otn-path-bandwidth;
      }
    }

    /*
     * Augment TE label.
     */

    /* Augment label hop of route-object-exclude-always
     * of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:explicit-route-objects-always/"

Zheng, et al.              Expires May 5, 2020                 [Page 17]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:route-object-exclude-always/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-include-exclude
     * of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:explicit-route-objects-always/"
          + "te:route-object-include-exclude/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-in-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-in-segment/"
          + "te:label-restrictions/te:label-restriction"  {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-in-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-in-segment/"
          + "te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-in-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-in-segment/"
          + "te:label-restrictions/"
          + "te:label-restriction/te:label-end/"

Zheng, et al.              Expires May 5, 2020                 [Page 18]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-out-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-out-segment/"
          + "te:label-restrictions/"
          + "te:label-restriction" {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }
    /* Augment label restrictions start for the forwarding direction
     * of path-out-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-out-segment/"
          + "te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-out-segment of named-path-constraints */
    augment "/te:te/te:globals/te:named-path-constraints/"
          + "te:named-path-constraint/te:path-out-segment/"
          + "te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label hop of route-exclude of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-exclude-objects/"
          + "te:route-object-exclude-object/te:type/te:label/"

Zheng, et al.              Expires May 5, 2020                 [Page 19]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-include of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-include-objects/"
          + "te:route-object-include-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-exclude-always of
     * primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:explicit-route-objects-always/"
          + "te:route-object-exclude-always/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {

        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-include-exclude of
     * primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:explicit-route-objects-always/"
          + "te:route-object-include-exclude/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label restrictions for the forwarding direction

Zheng, et al.              Expires May 5, 2020                 [Page 20]
Internet-Draft            OTN Tunnel YANG Model            November 2019

     * of path-in-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction" {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-in-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-in-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions for the forwarding direction of
     * path-out-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction" {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-out-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"

Zheng, et al.              Expires May 5, 2020                 [Page 21]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {

      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-out-segment of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label hop of path-route of primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:computed-paths-properties/"
          + "te:computed-path-properties/te:path-properties/"
          + "te:path-route-objects/te:path-computed-route-object/"
          + "te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of record-route of primary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:lsps/te:lsp/te:lsp-record-route-information/"
          + "te:lsp-record-route-information/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }

Zheng, et al.              Expires May 5, 2020                 [Page 22]
Internet-Draft            OTN Tunnel YANG Model            November 2019

    }

    /* Augment label hop of path-route of primary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:lsps/te:lsp/te:path-properties/"
          + "te:path-route-objects/te:path-computed-route-object/"
          + "te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-exclude of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-exclude-objects/"
          + "te:route-object-exclude-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-include of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-include-objects/"
          + "te:route-object-include-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-exclude-always of
     * reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"

Zheng, et al.              Expires May 5, 2020                 [Page 23]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:explicit-route-objects-always/"
          + "te:route-object-exclude-always/"
          + "te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-include-exclude of
     * reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:explicit-route-objects-always/"
          + "te:route-object-include-exclude/"
          + "te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-in-segment of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction" {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-in-segment of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }

Zheng, et al.              Expires May 5, 2020                 [Page 24]
Internet-Draft            OTN Tunnel YANG Model            November 2019

    }

    /* Augment label restrictions end for the forwarding direction
     * of path-in-segment of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-out-segment of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction" {
      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-out-segment of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-out-segment of reverse primary path */

    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:path-out-segment/te:label-restrictions/"

Zheng, et al.              Expires May 5, 2020                 [Page 25]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label hop of path-route of reverse primary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:computed-paths-properties/te:computed-path-properties/"
          + "te:path-properties/te:path-route-objects/"
          + "te:path-computed-route-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of record-route of reverse primary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:lsps/te:lsp/te:lsp-record-route-information/"
          + "te:lsp-record-route-information/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of path-route of reverse primary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-primary-paths/te:p2p-primary-path/"
          + "te:p2p-primary-reverse-path/"
          + "te:lsps/te:lsp/te:path-properties/"
          + "te:path-route-objects/te:path-computed-route-object/"
          + "te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

Zheng, et al.              Expires May 5, 2020                 [Page 26]
Internet-Draft            OTN Tunnel YANG Model            November 2019

    /* Augment label hop of route-exclude of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-exclude-objects/"
          + "te:route-object-exclude-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {

      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-include of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:optimizations/te:algorithm/te:metric/"
          + "te:optimization-metric/te:explicit-route-include-objects/"
          + "te:route-object-include-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-exclude-always
     * of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:explicit-route-objects-always/"
          + "te:route-object-exclude-always/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of route-object-include-exclude of
     * secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:explicit-route-objects-always/"
          + "te:route-object-include-exclude/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";

Zheng, et al.              Expires May 5, 2020                 [Page 27]
Internet-Draft            OTN Tunnel YANG Model            November 2019

      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-in-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction" {

      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-in-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-in-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-in-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions for the forwarding direction
     * of path-out-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction" {

Zheng, et al.              Expires May 5, 2020                 [Page 28]
Internet-Draft            OTN Tunnel YANG Model            November 2019

      description "OTN label.";
      uses layer1-types:otn-label-range-info;
    }

    /* Augment label restrictions start for the forwarding direction
     * of path-out-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-start/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label restrictions end for the forwarding direction
     * of path-out-segment of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:path-out-segment/te:label-restrictions/"
          + "te:label-restriction/te:label-end/"
          + "te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-start-end;
      }
    }

    /* Augment label hop of path-route of secondary path */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
                  + "te:computed-paths-properties/"
                  + "te:computed-path-properties/"
          + "te:path-properties/te:path-route-objects/"
          + "te:path-computed-route-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of record-route of secondary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:lsps/te:lsp/te:lsp-record-route-information/"

Zheng, et al.              Expires May 5, 2020                 [Page 29]
Internet-Draft            OTN Tunnel YANG Model            November 2019

          + "te:lsp-record-route-information/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {

      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of path-route of secondary LSP */
    augment "/te:te/te:tunnels/te:tunnel/"
          + "te:p2p-secondary-paths/te:p2p-secondary-path/"
          + "te:lsps/te:lsp/te:path-properties/"
          + "te:path-route-objects/"
          + "te:path-computed-route-object/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }

    /* Augment label hop of record-route of LSP */
    augment "/te:te/te:lsps-state/"
          + "te:lsp/te:lsp-record-route-information/"
          + "te:lsp-record-route-information/te:type/te:label/"
          + "te:label-hop/te:te-label/te:technology" {
      description "OTN label.";
      case otn {
        uses layer1-types:otn-label-hop;
      }
    }
  }

  <CODE ENDS>

6.  Security Considerations

   The YANG module specified in this document defines a schema for data
   that is designed to be accessed via network management protocols such
   as NETCONF [RFC6241] or RESTCONF [RFC8040].  The lowest NETCONF layer
   is the secure transport layer, and the mandatory-to-implement secure
   transport is Secure Shell (SSH) [RFC6242].  The lowest RESTCONF layer
   is HTTPS, and the mandatory-to-implement secure transport is TLS
   [RFC8446].

Zheng, et al.              Expires May 5, 2020                 [Page 30]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   The NETCONF access control model [RFC8341] provides the means to
   restrict access for particular NETCONF or RESTCONF users to a
   preconfigured subset of all available NETCONF or RESTCONF protocol
   operations and content.

   There are a number of data nodes defined in this YANG module that are
   writable/creatable/deletable (i.e., config true, which is the
   default).  These data nodes may be considered sensitive or vulnerable
   in some network environments.  Write operations (e.g., edit-config)
   to these data nodes without proper protection can have a negative
   effect on network operations.  These are the subtrees and data nodes
   and their sensitivity/vulnerability:

   /te:te/te:tunnels/te:tunnel /te:te/../te:te-bandwidth/te:technology
   /te:te/../te:type/te:label/te:label-hop/te:te-label/te:technology
   /te:te/../te:label-restrictions/te:label-restriction/te:label-start/
   te:te-label/te:technology /te:te/../te:label-restrictions/te:label-
   restriction/te:label-end/te:te-label/te:technology
   /te:te/../te:label-restrictions/te:label-restriction/ Editors note:
   we are using simplified description by folding similar branches to
   avoid repetation.

   Some of the readable data nodes in this YANG module may be considered
   sensitive or vulnerable in some network environments.  It is thus
   important to control read access (e.g., via get, get-config, or
   notification) to these data nodes.  These are the subtrees and data
   nodes and their sensitivity/vulnerability:

   /te:te/../te:type/te:label/te:label-hop/te:te-label/te:technology
   Editors note: we are using simplified description by folding similar
   branches to avoid repetation.

   Some of the RPC operations in this YANG module may be considered
   sensitive or vulnerable in some network environments.  It is thus
   important to control access to these operations.  These are the
   operations and their sensitivity/vulnerability:

   +---x otn-te-tunnel-path-compute This path compute RPC provides a
   mechanism to enable the client to query and/or subscribe on the
   tunnel to be notified whenever it changes.  Thus path computation is
   only for the client reference, with no real deploy or resource
   reservation.

7.  IANA Considerations

   It is proposed that IANA should assign new URIs from the "IETF XML
   Registry" [RFC3688] as follows:

Zheng, et al.              Expires May 5, 2020                 [Page 31]
Internet-Draft            OTN Tunnel YANG Model            November 2019

         URI: urn:ietf:params:xml:ns:yang:ietf-otn-tunnel
         Registrant Contact: The IESG
         XML: N/A; the requested URI is an XML namespace.

         URI: urn:ietf:params:xml:ns:yang:ietf-otn-types
         Registrant Contact: The IESG
         XML: N/A; the requested URI is an XML namespace.

   This document registers following YANG modules in the YANG Module
   Names registry [RFC7950].

      name:         ietf-otn-tunnel
      namespace:    urn:ietf:params:xml:ns:yang:ietf-otn-tunnel
      prefix:       otn-tunnel
      reference:    RFC XXXX

      name:         ietf-otn-types
      namespace:    urn:ietf:params:xml:ns:yang:ietf-otn-types
      prefix:       otn-types
      reference:    RFC XXXX

8.  Acknowledgements

   TBD.

9.  Contributors

   Aihua Guo
   Individual
   Email: aihuaguo.ietf@gmail.com

   Anurag Sharma
   Google
   Email: ansha@google.com

   Rajan Rao
   Infinera
   Email: rrao@infinera.com

   Yunbo Li
   China Mobile
   Email: liyunbo@chinamobile.com

   Dieter Beller
   Nokia

Zheng, et al.              Expires May 5, 2020                 [Page 32]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   Email: dieter.beller@nokia.com

   Yanlei Zheng
   China Unicom
   Email: zhengyanlei@chinaunicom.cn

   Xian Zhang
   Huawei Technologies
   Email: zhang.xian@huawei.com

   Lei Wang
   China Mobile
   Email: wangleiyj@chinamobile.com

   Oscar Gonzalez de Dios
   Telefonica
   Email: oscar.gonzalezdedios@telefonica.com

10.  References

10.1.  Normative References

   [I-D.ietf-ccamp-otn-topo-yang]
              Zheng, H., Guo, A., Busi, I., Sharma, A., Liu, X.,
              Belotti, S., Xu, Y., Wang, L., and O. Dios, "A YANG Data
              Model for Optical Transport Network Topology", draft-ietf-
              ccamp-otn-topo-yang-08 (work in progress), September 2019.

   [I-D.ietf-teas-yang-te]
              Saad, T., Gandhi, R., Liu, X., Beeram, V., and I. Bryskin,
              "A YANG Data Model for Traffic Engineering Tunnels and
              Interfaces", draft-ietf-teas-yang-te-21 (work in
              progress), April 2019.

   [ITU-Tg709]
              International Telecommunication Union, "Interfaces for the
              optical transport network", ITU-T G.709, June 2016.

   [RFC3688]  Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
              DOI 10.17487/RFC3688, January 2004,
              <https://www.rfc-editor.org/info/rfc3688>.

   [RFC6241]  Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
              and A. Bierman, Ed., "Network Configuration Protocol
              (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
              <https://www.rfc-editor.org/info/rfc6241>.

Zheng, et al.              Expires May 5, 2020                 [Page 33]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   [RFC6242]  Wasserman, M., "Using the NETCONF Protocol over Secure
              Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011,
              <https://www.rfc-editor.org/info/rfc6242>.

   [RFC7139]  Zhang, F., Ed., Zhang, G., Belotti, S., Ceccarelli, D.,
              and K. Pithewan, "GMPLS Signaling Extensions for Control
              of Evolving G.709 Optical Transport Networks", RFC 7139,
              DOI 10.17487/RFC7139, March 2014,
              <https://www.rfc-editor.org/info/rfc7139>.

   [RFC7950]  Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language",
              RFC 7950, DOI 10.17487/RFC7950, August 2016,
              <https://www.rfc-editor.org/info/rfc7950>.

   [RFC8040]  Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF
              Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017,
              <https://www.rfc-editor.org/info/rfc8040>.

   [RFC8341]  Bierman, A. and M. Bjorklund, "Network Configuration
              Access Control Model", STD 91, RFC 8341,
              DOI 10.17487/RFC8341, March 2018,
              <https://www.rfc-editor.org/info/rfc8341>.

   [RFC8342]  Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
              and R. Wilton, "Network Management Datastore Architecture
              (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
              <https://www.rfc-editor.org/info/rfc8342>.

   [RFC8446]  Rescorla, E., "The Transport Layer Security (TLS) Protocol
              Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018,
              <https://www.rfc-editor.org/info/rfc8446>.

10.2.  Informative References

   [I-D.ietf-ccamp-transport-nbi-app-statement]
              Busi, I., King, D., Zheng, H., and Y. Xu, "Transport
              Northbound Interface Applicability Statement", draft-ietf-
              ccamp-transport-nbi-app-statement-08 (work in progress),
              November 2019.

   [I-D.ietf-teas-actn-yang]
              Lee, Y., Zheng, H., Ceccarelli, D., Yoon, B., Dios, O.,
              Shin, J., and S. Belotti, "Applicability of YANG models
              for Abstraction and Control of Traffic Engineered
              Networks", draft-ietf-teas-actn-yang-04 (work in
              progress), August 2019.

Zheng, et al.              Expires May 5, 2020                 [Page 34]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   [RFC7062]  Zhang, F., Ed., Li, D., Li, H., Belotti, S., and D.
              Ceccarelli, "Framework for GMPLS and PCE Control of G.709
              Optical Transport Networks", RFC 7062,
              DOI 10.17487/RFC7062, November 2013,
              <https://www.rfc-editor.org/info/rfc7062>.

   [RFC7138]  Ceccarelli, D., Ed., Zhang, F., Belotti, S., Rao, R., and
              J. Drake, "Traffic Engineering Extensions to OSPF for
              GMPLS Control of Evolving G.709 Optical Transport
              Networks", RFC 7138, DOI 10.17487/RFC7138, March 2014,
              <https://www.rfc-editor.org/info/rfc7138>.

   [RFC8340]  Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
              BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
              <https://www.rfc-editor.org/info/rfc8340>.

Authors' Addresses

   Haomian Zheng
   Huawei Technologies
   H1-1-A043S Huawei Industrial Base, Songshanhu
   Dongguan, Guangdong  523808
   China

   Email: zhenghaomian@huawei.com

   Italo Busi
   Huawei Technologies
   HUAWEI TECHNOLOGIES ITALIA Srl Centro Direzionale Milano 2
   Milan, Milan  20090
   Italy

   Email: Italo.Busi@huawei.com

   Sergio Belotti
   Nokia

   Email: sergio.belotti@nokia.com

   Victor Lopez
   Telefonica

   Email: victor.lopezalvarez@telefonica.com

Zheng, et al.              Expires May 5, 2020                 [Page 35]
Internet-Draft            OTN Tunnel YANG Model            November 2019

   Yunbin Xu
   CAICT

   Email: xuyunbin@caict.ac.cn

Zheng, et al.              Expires May 5, 2020                 [Page 36]