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draft-ietf-ccamp-flexigrid-yang.txt
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draft-ietf-ccamp-flexigrid-yang.txt
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CCAMP Working Group J. E. Lopez de Vergara
Internet-Draft Naudit HPCN
Intended status: Standards Track D. Perdices Burrero
Expires: 30 July 2024 Universidad Autonoma de Madrid
D. King
Old Dog Consulting
Y. Lee
Samsung
H. Zheng
Huawei Technologies
27 January 2024
A YANG Data Model for Flexi-Grid Optical Networks
draft-ietf-ccamp-flexigrid-yang-latest
Abstract
This document defines a YANG module for managing flexi-grid optical
networks. The model defined in this document specifies a flexi-grid
traffic engineering database that is used to describe the topology of
a flexi-grid network. It is based on and augments existing YANG
models that describe network and traffic engineering topologies.
About This Document
This note is to be removed before publishing as an RFC.
The latest revision of this draft can be found at https://ietf-ccamp-
wg.github.io/draft-ietf-ccamp-flexigrid-yang/draft-ietf-ccamp-
flexigrid-yang.html. Status information for this document may be
found at https://datatracker.ietf.org/doc/draft-ietf-ccamp-flexigrid-
yang/.
Discussion of this document takes place on the Common Control and
Measurement Plane Working Group mailing list (mailto:[email protected]),
which is archived at https://mailarchive.ietf.org/arch/browse/ccamp/.
Subscribe at https://www.ietf.org/mailman/listinfo/ccamp/.
Source for this draft and an issue tracker can be found at
https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-flexigrid-yang.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 30 July 2024.
Copyright Notice
Copyright (c) 2024 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document. Code Components
extracted from this document must include Revised BSD License text as
described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Revised BSD License.
Table of Contents
1. Introduction
2. Terminology
3. Tree Diagram
3.1. Prefixes in Data Node Names
4. Example of Use
5. YANG Data Model for Flexi-Grid Topology
5.1. Flexi-Grid Topology Data Model Overview
5.2. Augmentations for Flexi-Grid Topology and Node
5.3. Bandwidth Augmentation
5.4. Label Augmentation
6. YANG Model (Tree Structure) for Flexi-Grid Topology
7. The YANG Code for Flexi-grid topology
8. Security Considerations
9. IANA Considerations
10. References
10.1. Normative References
10.2. Informative References
Acknowledgments
Contributors
Authors' Addresses
1. Introduction
The flexible grid (flexi-grid) optical network technology defined by
the International Telecommunication Union Telecommunication
Standardization Sector (ITU-T) and documented in Recommendation ITU-
T_G.694.1 [ITU-T_G.694.1] and ITU-T_G.872 [ITU-T_G.872] provides an
enhanced Dense Wavelength Division Multiplexing (DWDM) grid by
defining a set of nominal central frequencies, slot widths, and the
concept of the "frequency slot". This technology increases both
transport network scalability and flexibility, allowing the
optimization of bandwidth usage.
[RFC7698] provides a framework for GMPLS-Based control of flexi-grid
DWDM networks while [RFC7699] defines generalized labels for the use
of GMPLS in flexi-grid networks.
[RFC8363] provides extensions to the OSPF-TE protocol so as to
support GMPLS control of flexi-grid networks.
This document presents a YANG data model [RFC7950] for flexi-grid
objects in the dynamic optical network, including nodes, transponders
and links, as well as how such links interconnect nodes. This model
is independent of control plane protocols.
This document identifies the flexi-grid components, parameters, and
their values. It characterizes the features and the performances of
the flexi-grid elements. For this, it augments [RFC8795], and
imports the generic Layer 0 types and use of "media-channel" defined
in [I-D.ietf-ccamp-rfc9093-bis].
An application example in Section 4 is also provided to better
understand the utility of this YANG model.
A partner document defines a second YANG module that described flexi-
grid tunnels, i.e., the paths from source to destination through a
number of intermediate nodes [I-D.ietf-ccamp-flexigrid-tunnel-yang].
Impairment-aware traffic engineering topology is described in
[I-D.ietf-ccamp-optical-impairment-topology-yang].
The YANG data model defined in this document conforms to the Network
Management Datastore Architecture (NMDA) [RFC8342].
2. Terminology
Refer to [RFC7698] and [RFC7699] for the key terms used in this
document.
The following terms are defined in [RFC7950] and are not redefined
here:
* client
* server
* augment
* data model
* data node
The following terms are defined in [RFC6241] and are not redefined
here:
* configuration data
* state data
The terminology for describing YANG data models is found in
[RFC7950].
3. Tree Diagram
A simplified graphical representation of the data model is used in
this document. The meaning of the symbols in these diagrams is
defined in [RFC8340].
3.1. Prefixes 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 Table 1. It uses
prefixes from [I-D.ietf-ccamp-rfc9093-bis], [RFC8345], and [RFC8795].
+==========+==========================+===========+
| Prefix | YANG module | Reference |
+==========+==========================+===========+
| l0-types | ietf-layer0-types | [RFCYYYY] |
+----------+--------------------------+-----------+
| flexgt | ietf-flexi-grid-topology | RFCXXXX |
+----------+--------------------------+-----------+
| nw | ietf-network | [RFC8345] |
+----------+--------------------------+-----------+
| nt | ietf-network-topology | [RFC8345] |
+----------+--------------------------+-----------+
| tet | ietf-te-topology | [RFC8795] |
+----------+--------------------------+-----------+
Table 1: Prefixes and corresponding YANG modules
RFC Editor Note: Please replace XXXX with the RFC number assigned to
this document. Please replace YYYY with the RFC numbers assigned to
[I-D.ietf-ccamp-rfc9093-bis]. Please remove this note.
4. Example of Use
In order to explain how this model is used, we provide the following
example. An optical network usually has multiple transponders,
switches (nodes) and links. Figure 1 shows a simple topology.
+----------+ +----------+
| Flexi- | | Flexi- |
| grid | | grid |
| node A | | node E |
| | +------+ +------+ | |
| | Link 1 |Flexi-| Link 2 |Flexi-| Link 3 | |
| |<------>| grid |<------>| grid |<------>| |
|......... | |node B| |node C| | .........|
| Trans- : | +------+ +------+ | : Trans- |
| ponder : | | : ponder |
| A : | +----------+ | : E |
|........: | Link 4 |Flexi-grid| Link 5 | :........|
| |<------------>| node |<------------>| |
| | | D | | |
| | +----------+ | |
+----------+ +----------+
Figure 1: Topology Example
In order to configure a flexi-grid network to interconnect
transponders A and E, first of all we have to populate the flexi-grid
topology YANG model with all elements in the network:
* We define the transponders within nodes A and E as tunnel
termination points (TTPs) and provide their internal local link
connectivity towards the node interfaces. We also provide the
identifiers, addresses and interfaces of nodes A and B.
* We do the same for the nodes B, C and D, providing their
identifiers, addresses and interfaces, as well as the internal
connectivity matrix between interfaces.
* Then, we also define the links 1 to 5 that interconnect nodes,
indicating which flexi-grid labels are available.
* Other information, such as the slot frequency and granularity are
also provided.
5. YANG Data Model for Flexi-Grid Topology
5.1. Flexi-Grid Topology Data Model Overview
This document describes the data model for flexi-grid topology. As a
classic traffic engineering (TE) technology, flexi-grid provides WDM
switching in transport network. Therefore the YANG module presented
in this document augments from a more generic TE network topology
data model, i.e., the ietf-te-topology, as specified in [RFC8795],
following the guidelines provided in section 6 of [RFC8795].
Common types, identities, and groupings defined in
[I-D.ietf-ccamp-rfc9093-bis] are reused in this document.
The figure below shows the augmentation relationship between YANG
models.
+-------------------------+
TE generic | ietf-te-topology |
+-------------------------+
^
|
| Augments
|
+------------+-------------+
Flexi-Grid | ietf-flexi-grid-topology |
+--------------------------+
Figure 2: Relationship between Flexi-Grid and TE topology models
The entities and TE attributes, such as node, termination points and
links, are still applicable for describing a flexi-grid topology and
the model presented in this document only specifies the technology-
specific attributes/information.
The flexi-grid specific attributes and label format is defined in
[RFC7699], including the grid type, nominal central frequency
granularity, slot width granularity, n and m parameters. A
collection of common data types have also been specified in
[I-D.ietf-ccamp-rfc9093-bis], and used in this document for
augmentation of the generic TE topology model.
The YANG module ietf-flexi-grid-topology defined in this document
conforms to the Network Management Datastore Architecture (NMDA)
defined in [RFC8342].
5.2. Augmentations for Flexi-Grid Topology and Node
There are a few characteristics augmenting to the generic TE
topology.
Following the guidelines in [RFC8795], a flexi-grid-topology network-
type is specified as the indicator of flexi-grid in the topology as
shown in Figure 3.
augment /nw:networks/nw:network/nw:network-types/tet:te-topology:
+--rw flexi-grid-topology!
Figure 3: Flexi-Grid Topology Augmentation
A flexi-grid-node presence container is specified, augmenting the
generic TE node attributes, to indicate that the TE node is a Flexi-
Grid node as shown in Figure 4.
augment /nw:networks/nw:network/nw:node/tet:te
/tet:te-node-attributes:
+--rw flexi-grid-node!
Figure 4: Flex-Grid Node Augmentation
It is assumed that all the flexi-grid nodes are reconfigurable.
5.3. Bandwidth Augmentation
No bandwidth augmentations are needed for this YANG module.
As described in Section 4.2 of [RFC7699], there is some overlap
between bandwidth and label in Layer 0.
The flexi-grid label resource information described in Section 5.4,
is sufficient to also describe the spectrum resources within a flexi-
grid network. Therefore, the model does not define any augmentation
for the te-bandwidth containers defined in [RFC8795].
5.4. Label Augmentation
The model augments all the occurrences of the label-restriction list
in [RFC8795] with flexi-grid technology specific attributes using the
flexi-grid-label-range-info grouping defined in
[I-D.ietf-ccamp-rfc9093-bis].
Moreover, following the guidelines in [RFC8795], the model augments
all the occurrences of the te-label container with the flexi-grid
technology specific attributes using the flexi-grid-label-start-end,
flexi-grid-label-hop and flexi-grid-label-step groupings defined in
[I-D.ietf-ccamp-rfc9093-bis].
6. YANG Model (Tree Structure) for Flexi-Grid Topology
module: ietf-flexi-grid-topology
augment /nw:networks/nw:network/nw:network-types/tet:te-topology:
+--rw flexi-grid-topology!
augment /nw:networks/nw:network/nw:node/tet:te
/tet:te-node-attributes:
+--rw flexi-grid-node!
augment /nw:networks/nw:network/nw:node/tet:te
/tet:te-node-attributes/tet:connectivity-matrices
/tet:label-restrictions/tet:label-restriction:
+--rw flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
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 flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
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 flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
augment /nw:networks/nw:network/nw:node/tet:te
/tet:information-source-entry/tet:connectivity-matrices
/tet:label-restrictions/tet:label-restriction:
+--ro flexi-grid-label-range!
+--ro grid-type? identityref
+--ro priority? uint8
+--ro flexi-grid
+--ro slot-width-granularity? identityref
+--ro min-slot-width-factor? uint16
+--ro max-slot-width-factor? uint16
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 flexi-grid-label-range!
+--ro grid-type? identityref
+--ro priority? uint8
+--ro flexi-grid
+--ro slot-width-granularity? identityref
+--ro min-slot-width-factor? uint16
+--ro max-slot-width-factor? uint16
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 flexi-grid-label-range!
+--ro grid-type? identityref
+--ro priority? uint8
+--ro flexi-grid
+--ro slot-width-granularity? identityref
+--ro min-slot-width-factor? uint16
+--ro max-slot-width-factor? uint16
augment /nw:networks/nw:network/nw:node/tet:te
/tet:tunnel-termination-point
/tet:local-link-connectivities/tet:label-restrictions
/tet:label-restriction:
+--rw flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
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 flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
augment /nw:networks/nw:network/nt:link/tet:te
/tet:te-link-attributes/tet:label-restrictions
/tet:label-restriction:
+--rw flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
augment /nw:networks/nw:network/nt:link/tet:te
/tet:information-source-entry/tet:label-restrictions
/tet:label-restriction:
+--ro flexi-grid-label-range!
+--ro grid-type? identityref
+--ro priority? uint8
+--ro flexi-grid
+--ro slot-width-granularity? identityref
+--ro min-slot-width-factor? uint16
+--ro max-slot-width-factor? uint16
augment /nw:networks/tet:te/tet:templates/tet:link-template
/tet:te-link-attributes/tet:label-restrictions
/tet:label-restriction:
+--rw flexi-grid-label-range!
+--rw grid-type? identityref
+--rw priority? uint8
+--rw flexi-grid
+--rw slot-width-granularity? identityref
+--rw min-slot-width-factor? uint16
+--rw max-slot-width-factor? uint16
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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--rw flexi-grid-channel-spacing? identityref
+--rw flexi-ncfg? identityref
+--rw flexi-n-step? uint8
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--rw flexi-grid-channel-spacing? identityref
+--rw flexi-ncfg? identityref
+--rw flexi-n-step? 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/tet:label-start/tet:te-label
/tet:technology:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--rw flexi-grid-channel-spacing? identityref
+--rw flexi-ncfg? identityref
+--rw flexi-n-step? uint8
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw (single-or-super-channel)?
+--:(single)
| +--rw flexi-n? l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
x--:(super)
| +--rw subcarrier-flexi-n* [flexi-n]
| +--rw flexi-n l0-types:flexi-n
| +--rw flexi-m? l0-types:flexi-m
+--:(multi)
+--rw frequency-slots
+--rw frequency-slot* [flexi-n]
+--rw flexi-n l0-types:flexi-n
+--rw flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--ro flexi-grid-channel-spacing? identityref
+--ro flexi-ncfg? identityref
+--ro flexi-n-step? uint8
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--ro flexi-grid-channel-spacing? identityref
+--ro flexi-ncfg? identityref
+--ro flexi-n-step? 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/tet:label-start/tet:te-label
/tet:technology:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
+--ro flexi-n? l0-types:flexi-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:
+--:(flexi-grid)
x--ro flexi-grid-channel-spacing? identityref
+--ro flexi-ncfg? identityref
+--ro flexi-n-step? uint8
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--ro (single-or-super-channel)?
+--:(single)
| +--ro flexi-n? l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
x--:(super)
| +--ro subcarrier-flexi-n* [flexi-n]
| +--ro flexi-n l0-types:flexi-n
| +--ro flexi-m? l0-types:flexi-m
+--:(multi)
+--ro frequency-slots
+--ro frequency-slot* [flexi-n]
+--ro flexi-n l0-types:flexi-n
+--ro flexi-m? l0-types:flexi-m
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:
+--:(flexi-grid)
+--rw flexi-n? l0-types:flexi-n
augment /nw:networks/nw:network/nw:node/tet:te
/tet:tunnel-termination-point