RFC 9094 WSON Topology YANG Data Model July 2021
Zheng, et al. Standards Track [Page]
Stream:
Internet Engineering Task Force (IETF)
RFC:
9094
Category:
Standards Track
Published:
ISSN:
2070-1721
Authors:
郑好棉 (H. Zheng)
华为技术有限公司 (Huawei Technologies)
Y. Lee
Samsung
A. Guo
Futurewei
V. Lopez
Nokia
D. King
University of Lancaster

RFC 9094

A YANG Data Model for Wavelength Switched Optical Networks (WSONs)

Abstract

This document provides a YANG data model for the routing and wavelength assignment (RWA) TE topology in Wavelength Switched Optical Networks (WSONs). The YANG data model defined in this document conforms to the Network Management Datastore Architecture (NMDA).

Status of This Memo

This is an Internet Standards Track document.

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9094.

▲

Table of Contents

1. Introduction

This document provides a YANG data model for the routing and wavelength assignment (RWA) Traffic Engineering (TE) topology in transparent Wavelength Switched Optical Networks (WSONs). The YANG data model described in this document is a WSON technology-specific YANG data model based on the information model developed in [RFC7446] and the two encoding documents ([RFC7581] and [RFC7579]) that developed protocol-independent encodings based on [RFC7446].

[ITU-Tg6982] defines amplified multichannel dense wavelength division multiplexing applications with single-channel optical interfaces. The YANG data model defined in this document refers to the standard application mode defined in [ITU-Tg6982].

Neither impairment-aware optical networks nor flexi-grid are in scope for this document. Refer to [OPT-IMPAIR-AWARE-YANG] for the impairment-aware optical network topology model and [FLEXI-GRID-YANG] for the flexi-grid optical network topology model.

Additionally, neither transponder models nor resource block models (e.g., 3R) are in scope for this document.

This document defines one YANG module: "ietf-wson-topology" (Section 3). This document augments the generic TE topology specification [RFC8795].

There are multiple applications for the YANG data model defined in this document. For example, nodes within the network can use the data model to capture their understanding of the overall WSON topology and expose it to a controller. A controller can further propagate the topology to other controllers. The YANG data model is used by NETCONF [RFC6020] [RFC8341] or a RESTCONF [RFC8040] protocol. The YANG data model defined in this document conforms to the Network Management Datastore Architecture [RFC8342].

1.1. Terminology and Notations

Refer to [RFC7446] and [RFC7581] for the key terms used in this document. The following terms are defined in [RFC7950] and are not redefined here:

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

The terminology for describing YANG data models is found in [RFC7950].

1.2. Tree Diagram

A simplified graphical representation of the data model is used in Section 2 of this document. The meaning of the symbols in these diagrams is defined in [RFC8340].

1.3. Prefix in Data Node Names

In this document, names of data nodes and other data model objects are prefixed using the standard prefix associated with the corresponding YANG imported modules, as shown in the following table.

Table 1: Data Node Names
Prefix YANG module Reference
l0-types ietf-layer0-types [RFC9093]
wsont ietf-wson-topology RFC 9094
nw ietf-network [RFC8345]
nt ietf-network-topology [RFC8345]
tet ietf-te-topology [RFC8795]

2. YANG Data Model (Tree Structure) for WSON Topology 

module: ietf-wson-topology
  augment /nw:networks/nw:network/nw:network-types/tet:te-topology:
    +--rw wson-topology!
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes:
    +--rw wson-node!
       +--rw is-reconfigurable-node?   boolean
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction:
    +--ro grid-type?   identityref
    +--ro priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction:
    +--ro grid-type?   identityref
    +--ro priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction:
    +--ro grid-type?   identityref
    +--ro priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:information-source-entry/tet:label-restrictions
            /tet:label-restriction:
    +--ro grid-type?   identityref
    +--ro priority?    uint8
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction:
    +--rw grid-type?   identityref
    +--rw priority?    uint8
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-start/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-end/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:underlay/tet:primary-path/tet:path-element/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:underlay/tet:backup-path/tet:path-element/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:optimizations/tet:algorithm/tet:metric
            /tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:optimizations/tet:algorithm/tet:metric
            /tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:path-properties/tet:path-route-objects
            /tet:path-route-object/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:underlay/tet:primary-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:underlay/tet:backup-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:optimizations/tet:algorithm
            /tet:metric/tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:optimizations/tet:algorithm
            /tet:metric/tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:te-node-attributes/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:path-properties
            /tet:path-route-objects/tet:path-route-object/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-start/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-end/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:label-restrictions/tet:label-restriction
            /tet:label-step/tet:technology:
    +--:(wson)
       +--ro (l0-grid-type)?
          +--:(dwdm)
          |  +--ro wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--ro wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:underlay/tet:primary-path/tet:path-element/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:underlay/tet:backup-path/tet:path-element/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:optimizations/tet:algorithm/tet:metric
            /tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:optimizations/tet:algorithm/tet:metric
            /tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:path-properties/tet:path-route-objects
            /tet:path-route-object/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:from/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--ro (l0-grid-type)?
          +--:(dwdm)
          |  +--ro wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--ro wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:to/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--ro (l0-grid-type)?
          +--:(dwdm)
          |  +--ro wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--ro wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:underlay/tet:primary-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:underlay/tet:backup-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:optimizations/tet:algorithm
            /tet:metric/tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:optimizations/tet:algorithm
            /tet:metric/tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:information-source-entry/tet:connectivity-matrices
            /tet:connectivity-matrix/tet:path-properties
            /tet:path-route-objects/tet:path-route-object/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:underlay
            /tet:primary-path/tet:path-element/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:underlay
            /tet:backup-path/tet:path-element/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:optimizations
            /tet:algorithm/tet:metric/tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:optimizations
            /tet:algorithm/tet:metric/tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities/tet:path-properties
            /tet:path-route-objects/tet:path-route-object/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:underlay
            /tet:primary-path/tet:path-element/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:underlay/tet:backup-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:optimizations
            /tet:algorithm/tet:metric/tet:optimization-metric
            /tet:explicit-route-exclude-objects
            /tet:route-object-exclude-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:optimizations
            /tet:algorithm/tet:metric/tet:optimization-metric
            /tet:explicit-route-include-objects
            /tet:route-object-include-object/tet:type/tet:label
            /tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nw:node/tet:te
            /tet:tunnel-termination-point
            /tet:local-link-connectivities
            /tet:local-link-connectivity/tet:path-properties
            /tet:path-route-objects/tet:path-route-object/tet:type
            /tet:label/tet:label-hop/tet:te-label/tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro (single-or-super-channel)?
          |     +--:(single)
          |     |  +--ro dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--ro subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:underlay/tet:primary-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:underlay/tet:backup-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:information-source-entry/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:information-source-entry/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--ro (grid-type)?
          +--:(dwdm)
          |  +--ro dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--ro cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/nw:network/nt:link/tet:te
            /tet:information-source-entry/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--ro (l0-grid-type)?
          +--:(dwdm)
          |  +--ro wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--ro wson-cwdm-channel-spacing?   identityref
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:underlay/tet:primary-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:underlay/tet:backup-path
            /tet:path-element/tet:type/tet:label/tet:label-hop
            /tet:te-label/tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw (single-or-super-channel)?
          |     +--:(single)
          |     |  +--rw dwdm-n?              l0-types:dwdm-n
          |     +--:(super)
          |        +--rw subcarrier-dwdm-n*   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?                    l0-types:cwdm-n
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-start/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-end/tet:te-label
            /tet:technology:
    +--:(wson)
       +--rw (grid-type)?
          +--:(dwdm)
          |  +--rw dwdm-n?   l0-types:dwdm-n
          +--:(cwdm)
             +--rw cwdm-n?   l0-types:cwdm-n
  augment /nw:networks/tet:te/tet:templates/tet:link-template
            /tet:te-link-attributes/tet:label-restrictions
            /tet:label-restriction/tet:label-step/tet:technology:
    +--:(wson)
       +--rw (l0-grid-type)?
          +--:(dwdm)
          |  +--rw wson-dwdm-channel-spacing?   identityref
          +--:(cwdm)
             +--rw wson-cwdm-channel-spacing?   identityref

3. YANG Module for WSON Topology 

<CODE BEGINS> file "ietf-wson-topology@2021-07-19.yang"

module ietf-wson-topology {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-wson-topology";
  prefix wsont;

  import ietf-network {
    prefix nw;
    reference
      "RFC 8345: A YANG Data Model for Network Topologies";
  }

  import ietf-network-topology {
    prefix nt;
    reference
      "RFC 8345: A YANG Data Model for Network Topologies";
  }

  import ietf-te-topology {
    prefix tet;
    reference
      "RFC 8795: YANG Data Model for
       Traffic Engineering (TE) Topologies";
  }

  import ietf-layer0-types {
    prefix l0-types;
    reference
      "RFC 9093: A YANG Data Model for Layer 0 Types";
  }

  organization
    "IETF CCAMP Working Group";

  contact
    "WG Web: <https://datatracker.ietf.org/wg/ccamp/>
     WG List: <mailto:ccamp@ietf.org>

     Editor:   Haomian Zheng  <zhenghaomian@huawei.com>
     Editor:   Young Lee  <younglee.tx@gmail.com>
     Editor:   Aihua Guo  <aihuaguo.ietf@gmail.com>
     Editor:   Victor Lopez <victor.lopez@nokia.com>
     Editor:   Daniel King  <d.king@lancaster.ac.uk>";

  description
    "This module provides a YANG data model for the routing and
     wavelength assignment (RWA) Traffic Engineering (TE)
     topology in Wavelength Switched Optical Networks (WSONs).
     The YANG data model described in this document is a WSON
     technology-specific YANG data model augmenting the generic TE
     topology module (ietf-te-topology) based on the information
     model developed in RFC 7446 and the two encoding documents
     RFC 7579 and RFC 7581.

     Copyright (c) 2021 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 9094; see
     the RFC itself for full legal notices.";

  revision 2021-07-19 {
    description
      "Initial version";

    reference
      "RFC 9094: A YANG Data Model for Wavelength Switched
       Optical Networks (WSONs)";
  }

  /*
   * Data nodes
   */

  augment "/nw:networks/nw:network/nw:network-types"
        + "/tet:te-topology" {
    description
      "Augment network types to define the WSON topology type.";
    container wson-topology {
      presence "Its presence identifies the WSON topology type.";
      description
        "Introduce a new network type for WSON topology.";
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te"
        + "/tet:te-node-attributes" {
    when '/nw:networks/nw:network/nw:network-types'
       + '/tet:te-topology/wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE node attributes.";
    container wson-node {
      presence "The TE node is a WSON node.";
      description
        "WSON node attributes";
      leaf is-reconfigurable-node {
        type boolean;
        default "true";
        description
          "Indicates whether the WSON node is reconfigurable:
           - true: the node is reconfigurable, i.e.,
             it is representing a Reconfigurable Optical
             Add/Drop Multiplexer (ROADM) node;
           - false: the node is not reconfigurable, i.e.,
             it is representing a Fixed Optical Add/Drop
             Multiplexer (FOADM) node.";
      }
    }
  }

  /*
   * Augment TE label range information
   */

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the TE node
       connectivity matrices.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:from/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the source LTP
       of the connectivity matrix entry.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:to/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the destination LTP
       of the connectivity matrix entry.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/"
        + "tet:connectivity-matrices/tet:label-restrictions/"
        + "tet:label-restriction" {
    when '../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the TE node
       connectivity matrices information source.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:from/tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the source LTP
       of the connectivity matrix entry information source.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:to/tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the destination LTP
       of the connectivity matrix entry information source.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the Tunnel
       Termination Point (TTP) Local Link Connectivities.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the TTP
       Local Link Connectivity entry.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the TE link.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:information-source-entry/"
        + "tet:label-restrictions/tet:label-restriction" {
    when '../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range information for the TE link
       information source.";
    uses l0-types:l0-label-range-info;
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction" {
    description
      "Augment TE label range information for the TE link template.";
    uses l0-types:l0-label-range-info;
  }

  /*
   * Augment TE label
   */

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TE node
       connectivity matrices.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:label-restrictions/"
        + "tet:label-restriction/tet:label-end/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TE node
       connectivity matrices.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:label-restrictions/"
        + "tet:label-restriction/tet:label-step/"
        + "tet:technology" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TE node
       connectivity matrices.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:underlay/tet:primary-path/tet:path-element/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path of the
       TE node connectivity matrices.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:underlay/tet:backup-path/tet:path-element/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path of the
       TE node connectivity matrices.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the TE node connectivity
       matrices.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the TE node connectivity
       matrices.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the TE node connectivity matrices.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:from/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the source LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:from/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the source LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:from/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/"
        + "tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the source LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:to/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the destination LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:to/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the destination LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:to/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/"
        + "tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the destination LTP
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:underlay/tet:primary-path/tet:path-element/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:underlay/tet:backup-path/tet:path-element/"
        + "tet:type/tet:label/tet:label-hop/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:optimizations/"
        + "tet:algorithm/tet:metric/tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/tet:optimizations/"
        + "tet:algorithm/tet:metric/tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:te-node-attributes/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the connectivity matrix entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/"
        + "tet:connectivity-matrices/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TE node connectivity
       matrices information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/"
        + "tet:connectivity-matrices/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TE node connectivity
       matrices information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/"
        + "tet:connectivity-matrices/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TE node connectivity
       matrices information source.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the TE node connectivity matrices of the information
       source entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the TE node connectivity matrices of the information
       source entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the TE node connectivity matrices
       information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the TE node connectivity matrices
       information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the TE node connectivity matrices information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:from/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the source LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }
  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:from/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the source LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:from/tet:label-restrictions/"
        + "tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the source LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:to/tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the destination LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:to/tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the destination LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:to/tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the destination LTP
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the connectivity matrix entry
       information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the connectivity matrix entry
       information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:information-source-entry/tet:connectivity-matrices/"
        + "tet:connectivity-matrix/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the connectivity matrix entry information source.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TTP
       Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/"
        + "tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TTP
       Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/"
        + "tet:technology" {
    when '../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TTP
       Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the TTP Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the TTP Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the TTP Local Link
       Connectivities.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the TTP Local Link
       Connectivities.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the TTP Local Link Connectivities.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TTP
       Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TTP
       Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TTP
       Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the TTP Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the TTP Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-exclude-objects/"
        + "tet:route-object-exclude-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects excluded
       by the path computation of the TTP Local Link
       Connectivity entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:optimizations/tet:algorithm/tet:metric/"
        + "tet:optimization-metric/"
        + "tet:explicit-route-include-objects/"
        + "tet:route-object-include-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the explicit route objects included
       by the path computation of the TTP Local Link
       Connectivity entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nw:node/tet:te/"
        + "tet:tunnel-termination-point/"
        + "tet:local-link-connectivities/"
        + "tet:local-link-connectivity/"
        + "tet:path-properties/tet:path-route-objects/"
        + "tet:path-route-object/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the computed path route objects
       of the TTP Local Link Connectivity entry.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }
  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay primary path
       of the TE link.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    when '../../../../../../../../'
       + 'nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label hop for the underlay backup path
       of the TE link.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TE link.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TE link.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TE link.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:information-source-entry/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range start for the TE link
       information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:information-source-entry/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    when '../../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range end for the TE link
       information source.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/nw:network/nt:link/tet:te/"
        + "tet:information-source-entry/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    when '../../../../../../nw:network-types/tet:te-topology/'
       + 'wsont:wson-topology' {
      description
        "Augmentation parameters apply only for networks with
         WSON topology type.";
    }
    description
      "Augment TE label range step for the TE link
       information source.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:underlay/tet:primary-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    description
      "Augment TE label hop for the underlay primary path
       of the TE link template.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:underlay/tet:backup-path/tet:path-element/tet:type/"
        + "tet:label/tet:label-hop/tet:te-label/tet:technology" {
    description
      "Augment TE label hop for the underlay backup path
       of the TE link template.";
    case wson {
      uses l0-types:wson-label-hop;
    }
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-start/tet:te-label/tet:technology" {
    description
      "Augment TE label range start for the TE link template.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-end/tet:te-label/tet:technology" {
    description
      "Augment TE label range end for the TE link template.";
    case wson {
      uses l0-types:wson-label-start-end;
    }
  }

  augment "/nw:networks/tet:te/tet:templates/"
        + "tet:link-template/tet:te-link-attributes/"
        + "tet:label-restrictions/tet:label-restriction/"
        + "tet:label-step/tet:technology" {
    description
      "Augment TE label range step for the TE link template.";
    case wson {
      uses l0-types:wson-label-step;
    }
  }
}


<CODE ENDS>

4. 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].

The NETCONF protocol over Secure Shell (SSH) specification [RFC6242] describes a method for invoking and running NETCONF within a Secure Shell (SSH) session as an SSH subsystem. 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. Considerations in Section 8 of [RFC8795] are also applicable to the module defined in this document.

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. Considerations in Section 8 of [RFC8795] are also applicable to the module defined in this document.

Finally, the YANG module described in this document augments the "ietf-network" YANG module [RFC8345] and the "ietf-te-topology" YANG module [RFC8795] by adding data nodes. The security considerations for the subtrees described in those RFCs apply equally to the new data nodes that this module adds.

5. IANA Considerations

IANA has assigned new URIs from the "IETF XML Registry" [RFC3688] as follows:

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

This document registers a YANG module in the "YANG Module Names" registry [RFC7950] [RFC6020].

Name:
ietf-wson-topology
Namespace:
urn:ietf:params:xml:ns:yang:ietf-wson-topology
Prefix:
wsont
Reference:
RFC 9094

6. References

6.1. Normative References

[ITU-Tg6982]
ITU-T, "Amplified multichannel dense wavelength division multiplexing applications with single channel optical interfaces", ITU-T Recommendation G.698.2, .
[RFC6020]
Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, , <https://www.rfc-editor.org/info/rfc6020>.
[RFC6241]
Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, , <https://www.rfc-editor.org/info/rfc6241>.
[RFC6242]
Wasserman, M., "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, , <https://www.rfc-editor.org/info/rfc6242>.
[RFC7579]
Bernstein, G., Ed., Lee, Y., Ed., Li, D., Imajuku, W., and J. Han, "General Network Element Constraint Encoding for GMPLS-Controlled Networks", RFC 7579, DOI 10.17487/RFC7579, , <https://www.rfc-editor.org/info/rfc7579>.
[RFC7581]
Bernstein, G., Ed., Lee, Y., Ed., Li, D., Imajuku, W., and J. Han, "Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks", RFC 7581, DOI 10.17487/RFC7581, , <https://www.rfc-editor.org/info/rfc7581>.
[RFC7950]
Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, , <https://www.rfc-editor.org/info/rfc7950>.
[RFC8040]
Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, , <https://www.rfc-editor.org/info/rfc8040>.
[RFC8340]
Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, , <https://www.rfc-editor.org/info/rfc8340>.
[RFC8341]
Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, , <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, , <https://www.rfc-editor.org/info/rfc8342>.
[RFC8345]
Clemm, A., Medved, J., Varga, R., Bahadur, N., Ananthakrishnan, H., and X. Liu, "A YANG Data Model for Network Topologies", RFC 8345, DOI 10.17487/RFC8345, , <https://www.rfc-editor.org/info/rfc8345>.
[RFC8446]
Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, , <https://www.rfc-editor.org/info/rfc8446>.
[RFC8795]
Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and O. Gonzalez de Dios, "YANG Data Model for Traffic Engineering (TE) Topologies", RFC 8795, DOI 10.17487/RFC8795, , <https://www.rfc-editor.org/info/rfc8795>.
[RFC9093]
Zheng, H., Lee, Y., Guo, A., Lopez, V., and D. King, "A YANG Data Model for Layer 0 Types", RFC 9093, DOI 10.17487/RFC9093, , <https://www.rfc-editor.org/info/rfc9093>.

6.2. Informative References

[FLEXI-GRID-YANG]
Lopez de Vergara, J., Perdices Burrero, D., King, D., Lee, Y., and H. Zheng, "A YANG Data Model for Flexi-Grid Optical Networks", Work in Progress, Internet-Draft, draft-ietf-ccamp-flexigrid-yang-10, , <https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-flexigrid-yang-10>.
[OPT-IMPAIR-AWARE-YANG]
Lee, Y., Le Rouzic, E., Lopez, V., Galimberti, G., and D. Beller, "A YANG Data Model for Optical Impairment-aware Topology", Work in Progress, Internet-Draft, draft-ietf-ccamp-optical-impairment-topology-yang-07, , <https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-optical-impairment-topology-yang-07>.
[RFC3688]
Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, , <https://www.rfc-editor.org/info/rfc3688>.
[RFC7446]
Lee, Y., Ed., Bernstein, G., Ed., Li, D., and W. Imajuku, "Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks", RFC 7446, DOI 10.17487/RFC7446, , <https://www.rfc-editor.org/info/rfc7446>.

Contributors

Dhruv Dhody
Huawei Technologies
Bin Yeong Yoon
ETRI
Ricard Vilalta
CTTC
Italo Busi
Huawei Technologies

Authors' Addresses

Haomian Zheng
Huawei Technologies
H1, Huawei Xiliu Beipo Village, Songshan Lake
Dongguan
Guangdong, 523808
China
Additional contact information:
郑好棉
中国
523808
广东 东莞
松山湖华为溪流背坡村H1
华为技术有限公司
Young Lee
Samsung
South Korea
Aihua Guo
Futurewei
Victor Lopez
Nokia
Daniel King
University of Lancaster