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YANG Data Model for Layer 3 TE Topologies
draft-ietf-teas-yang-l3-te-topo-16

Document Type Active Internet-Draft (teas WG)
Authors Xufeng Liu , Igor Bryskin , Vishnu Pavan Beeram , Tarek Saad , Himanshu C. Shah , Oscar Gonzalez de Dios
Last updated 2024-03-02
Replaces draft-liu-teas-yang-l3-te-topo
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draft-ietf-teas-yang-l3-te-topo-16
Network Working Group                                             X. Liu
Internet-Draft                                                 Alef Edge
Intended status: Standards Track                              I. Bryskin
Expires: September 3, 2024                                    Individual
                                                               V. Beeram
                                                        Juniper Networks
                                                                 T. Saad
                                                       Cisco Systems Inc
                                                                 H. Shah
                                                                   Ciena
                                                     O. Gonzalez de Dios
                                                              Telefonica
                                                           March 2, 2024

               YANG Data Model for Layer 3 TE Topologies
                   draft-ietf-teas-yang-l3-te-topo-16

Abstract

   This document defines a YANG data model for layer 3 traffic
   engineering topologies.

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 September 3, 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

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   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Prefixes in Data Node Names . . . . . . . . . . . . . . .   4
   2.  Modeling Considerations for L3 TE Topologies  . . . . . . . .   4
     2.1.  Relationship Between Layer 3 Unicast Topology and TE
           topology  . . . . . . . . . . . . . . . . . . . . . . . .   6
     2.2.  Relationship Modeling . . . . . . . . . . . . . . . . . .   7
       2.2.1.  Topology Referencing  . . . . . . . . . . . . . . . .   7
       2.2.2.  Node Referencing  . . . . . . . . . . . . . . . . . .   8
       2.2.3.  Link Termination Point Referencing  . . . . . . . . .   9
       2.2.4.  Link Referencing  . . . . . . . . . . . . . . . . . .   9
     2.3.  Topology Type Modeling  . . . . . . . . . . . . . . . . .   9
   3.  Packet Switching Technology Extensions to TE Topologies . . .   9
     3.1.  Technology Specific Link Attributes . . . . . . . . . . .  10
     3.2.  Performance Metric  . . . . . . . . . . . . . . . . . . .  10
   4.  Complete Model Tree Structure . . . . . . . . . . . . . . . .  11
     4.1.  Layer 3 TE Topology Module  . . . . . . . . . . . . . . .  11
     4.2.  Packet Switching TE Topology Module . . . . . . . . . . .  11
       4.2.1.  Network Types . . . . . . . . . . . . . . . . . . . .  11
       4.2.2.  Node Connectivity Matrix Attributes . . . . . . . . .  12
       4.2.3.  Node Information Source . . . . . . . . . . . . . . .  16
       4.2.4.  Node Local Link Connectivity  . . . . . . . . . . . .  21
       4.2.5.  Link Template for Performance Metrics . . . . . . . .  25
       4.2.6.  Link for Performance Metrics  . . . . . . . . . . . .  27
       4.2.7.  Link Information Source for Performance Metrics . . .  30
       4.2.8.  Link Template for Packet-specific Attributes  . . . .  32
       4.2.9.  Link for Packet-specific Attributes . . . . . . . . .  32
       4.2.10. Link Information Source for Packet-specific
               Attributes  . . . . . . . . . . . . . . . . . . . . .  33
       4.2.11. TE Bandwidth for Packet-specific Technologies . . . .  33
   5.  YANG Modules  . . . . . . . . . . . . . . . . . . . . . . . .  36
     5.1.  Layer 3 TE Topology Module  . . . . . . . . . . . . . . .  36
     5.2.  Packet Switching TE Topology Module . . . . . . . . . . .  40
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  56
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  57
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  59
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  59
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  62

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   Appendix A.  Companion YANG Model for Non-NMDA Compliant
                Implementations  . . . . . . . . . . . . . . . . . .  63
     A.1.  Layer 3 TE Topology State Module  . . . . . . . . . . . .  63
     A.2.  Packet Switching TE Topology State Module . . . . . . . .  66
   Appendix B.  Data Tree Example  . . . . . . . . . . . . . . . . .  80
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  90

1.  Introduction

   This document defines a YANG [RFC7950] data model for describing the
   relationship between a layer 3 unicast topology [RFC8346] and a
   Traffic Engineering (TE) topology [RFC8795].

   When traffic engineering is enabled on a layer 3 unicast topology,
   there will be a corresponding TE topology.  The TE topology may or
   may not be congruent with the layer 3 unicast topology.  When such a
   congruent TE topology exists, there will be a one-to-one association
   between the one modeling element in the layer 3 unicast topology and
   another element in the TE topology.  When such a congruent TE
   topology does not exist, the association will not be one-to-one.
   This YANG data model supports both cases.

1.1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14, [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

   The following terms are defined in [RFC7950] and are not redefined
   here:

   o  augment

   o  data model

   o  data node

1.2.  Tree Diagrams

   Tree diagrams used in this document follow the notation defined in
   [RFC8340].

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1.3.  Prefixes in Data Node Names

   In this document, names of data nodes, actions, and other data model
   objects are often used without a prefix, as long as it is clear from
   the context in which YANG module each name is defined.  Otherwise,
   names are prefixed using the standard prefix associated with the
   corresponding YANG module, as shown in Table 1.

   +--------------+-----------------------+----------------------------+
   | Prefix       | YANG module           | Reference                  |
   +--------------+-----------------------+----------------------------+
   | l3t          | ietf-l3-unicast-      | [RFC8346]                  |
   |              | topology              |                            |
   | nw           | ietf-network          | [RFC8345]                  |
   | nt           | ietf-network-topology | [RFC8345]                  |
   | rt-types     | ietf-routing-types    | [RFC8294]                  |
   | te-packet-   | ietf-te-packet-types  | [I-D.ietf-teas-rfc8776-upd |
   | types        |                       | ate]                       |
   | te-types     | ietf-te-types         | [I-D.ietf-teas-rfc8776-upd |
   |              |                       | ate]                       |
   | tet          | ietf-te-topology      | [RFC8795]                  |
   +--------------+-----------------------+----------------------------+

             Table 1: Prefixes and Corresponding YANG Modules

2.  Modeling Considerations for L3 TE Topologies

   A layer 3 TE topology is a layer 3 unicast topology with additional
   TE capabilities enabled.  [RFC8346] defines a YANG data model for
   layer 3 unicast topologies, consisting of two modules: ietf-l3-
   unicast-topology and ietf-l3-unicast-topology-state.  The YANG data
   model defined in this document augments the YANG data model defined
   in [RFC8346].  This document specifies two YANG modules ietf-l3-te-
   topology and ietf-l3-te-topology-state, augmenting ietf-l3-unicast-
   topology and ietf-l3-unicast-topology-state respectively, to add
   additional TE capabilities.  Such an augmentation relationship is
   shown in Figure 1 below.

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          +-------------------------+
          |    Network Topology     |
          |  ietf-network-topology  | Defined in RFC 8345
          +------------^------------+
                       |
                       | augments
                       | (An "inheritance" relation)
                       |
         +-------------^-------------+
         | Layer 3 Unicast Topology  |
         | ietf-l3-unicast-topology  | Defined in RFC 8346
         +-------------^-------------+
                       |
                       | augments
                       | (An "inheritance" relation)
                       |
          +------------^------------+
          |   Layer 3 TE Topology   |
          |   ietf-l3-te-topology   | Defined in this document
          +-------------------------+

                    Figure 1: L3 TE Model Augmentation

   Additionally, this document specifies two more YANG modules ietf-te-
   topology-packet and ietf-te-topology-packet-state, augmenting ietf-
   te-topology and ietf-te-topology-state respectively, to add
   additional attributes for TE packet data networks, as shown in
   Figure 2.  Section 3 of this document describes these additional
   attributes in further details.

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          +-------------------------+
          |    Network Topology     |
          |  ietf-network-topology  | Defined in RFC 8345
          +------------^------------+
                       |
                       | augments
                       | (An "inheritance" relation)
                       |
          +------------^------------+
          |       TE Topology       |
          |     ietf-te-topology    | Defined in RFC 8795
          +------------^------------+
                       |
                       | augments
                       | (An "inheritance" relation)
                       |
          +------------^------------+
          |    TE Packet Topology   |
          | ietf-te-topology-packet | Defined in this document
          +-------------------------+

                  Figure 2: TE Packet Model Augmentation

2.1.  Relationship Between Layer 3 Unicast Topology and TE topology

   In general, the layer 3 unicast topology model specified in [RFC8346]
   and the TE topology model specified in [RFC8795] can be used
   independently.  This document provides a method to use both together.

   When traffic engineering is enabled on a layer 3 unicast topology,
   there will be a resulting layer 3 TE topology, which is modeled by
   the YANG modules defined in this document.  A layer 3 TE topology
   augments a layer 3 unicast topology, so it inherits all the objects
   and properties of the base layer 3 unicast topology.  In addition, in
   such a layer 3 TE topology, the objects that are inherited from the
   base layer 3 unicast topology to this layer 3 TE topology may be
   associated with the objects in one corresponding TE topology.  Such
   associations are supported by the module ietf-l3-te-topology defined
   in this document.

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        +----------------------------+  +----------------------+
        |      Layer 3 Topology      |  |     TE Topology      |
        |  ietf-l3-unicast-topology  |  |   ietf-te-topology   |
        +--------------^-------------+  +----------------------+
                       |                  A
                       | augments         |
                       |                 /
                       |                / references by "leafref"
          +------------^-----------+   /  (An "association" relation)
          |  Layer 3 TE Topology   |__/
          |  ietf-l3-te-topology   |
          +------------------------+

                        Figure 3: Model References

   The properties of the relations between the objects in a layer 3 TE
   topology and the objects in the corresponding TE topology are:

   o  The associations are between objects of the same class, i.e. node
      to node or link to link.

   o  The multiplicity of such an association is: 0..1 to 0..1.  An
      object in a layer 3 TE topology modeled by ietf-l3-te-topology may
      be associated with zero or one object in the corresponding TE
      topology.

2.2.  Relationship Modeling

   YANG data type leafref is used to model the association relationship
   between a layer 3 TE topology and a TE topology.  YANG "must"
   statements are used to enforce that the referenced objects are in a
   topology of the proper type.

2.2.1.  Topology Referencing

   When TE is enabled on a layer 3 unicast topology, if the TE topology
   is not congruent with the layer 3 unicast topology, the layer 3 TE
   topology will have a reference to the corresponding TE topology.
   Such a reference is modeled as follows:

   augment /nw:networks/nw:network/l3t:l3-topology-attributes:
     +--rw l3-te-topology-attributes
        +--rw network-ref?   -> /nw:networks/network/network-id

   The above network-ref is a YANG data node of type leafref, used to
   indicate the network-id of the corresponding TE topology.  The

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   leafref relationship is illustrated by the simplified data instances
   in the following diagram.

    +-------------------------------+      +--------------------------+
    |   ietf-l3-te-topology:        |      |  ietf-te-topology:       |
    |+-----------------------------+|      |+------------------------+|
    ||  ietf-l3-unicast-topology:  ||      || ietf-network-topology: ||
    ||+---------------------------+||  +-->||   network-id (key)     ||
    ||| ietf-network-topology:    |||  |   ||   network-types: {     ||
    |||   network-id (key)        |||  |   ||     te-topology        ||
    |||   network-types: {        |||  |   ||   }                    ||
    |||     l3-unicast-topology: {|||  |   ||   <other attributes>   ||
    |||       l3-te               |||  |   |+------------------------+|
    |||     }                     |||  |   |    <TE attributes>       |
    |||   }                       |||  |   +--------------------------+
    |||   <other attributes>      |||  |
    ||+---------------------------+||  |
    ||    <L3 unicast attributes>  ||  |
    |+-----------------------------+|  |
    |     network-ref               |--+
    +-------------------------------+

                      Figure 4: Topology Referencing

   network-id defined in in [RFC8345] uniquely identifies a network
   topology instance of any type.  As shown in the above diagram, the
   value of network-ref in the ietf-l3-te-topology instance matches the
   value of network-id in the ietf-te-topology instance.  To ensure that
   the topology instance identified by this network-id is of type "te-
   topology", a "must" statement is defined in module ietf-l3-te-
   topology.  Such "must" statements are also used in all the following
   leafref nodes in this section.

   If the TE topology is congruent with the layer 3 unicast topology,
   the above reference can still be used to specified TE parameters
   defined in the TE topology model.

2.2.2.  Node Referencing

   When TE is enabled on a layer 3 unicast topology, if the TE topology
   is not congruent with the layer 3 unicast topology, a node in the
   layer 3 TE topology may have a reference to the corresponding node in
   the TE Topology.  Such a reference is modeled as follows:

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   augment /nw:networks/nw:network/nw:node/l3t:l3-node-attributes:
     +--rw l3-te-node-attributes
        +--rw node-ref?      leafref
        +--rw network-ref?   -> /nw:networks/network/network-id

2.2.3.  Link Termination Point Referencing

   When TE is enabled on a layer 3 unicast topology, if the TE topology
   is not congruent with the layer 3 unicast topology, a link
   termination point in the layer 3 TE topology may have a reference to
   the corresponding link termination point in the TE Topology.  Such a
   reference is modeled as follows:

   augment /nw:networks/nw:network/nw:node/nt:termination-point
             /l3t:l3-termination-point-attributes:
     +--rw l3-te-tp-attributes
        +--rw tp-ref?        leafref
        +--rw node-ref?      leafref
        +--rw network-ref?   -> /nw:networks/network/network-id

2.2.4.  Link Referencing

   When TE is enabled on a layer 3 unicast topology, if the TE topology
   is not congruent with the layer 3 unicast topology, a link in the
   layer 3 topology may have a reference to the corresponding link in
   the TE Topology.  Such a reference is modeled as follows:

   augment /nw:networks/nw:network/nt:link/l3t:l3-link-attributes:
     +--rw l3-te-link-attributes
        +--rw link-ref?      leafref
        +--rw network-ref?   -> /nw:networks/network/network-id

2.3.  Topology Type Modeling

   A new topology type is defined in this document, to indicate a
   topology that is a layer 3 TE topology, which both inherits l3
   unicast topology properties and is capable of TE.

   augment /nw:networks/nw:network/nw:network-types
             /l3t:l3-unicast-topology:
     +--rw l3-te!

3.  Packet Switching Technology Extensions to TE Topologies

   The technology agnostic TE Topology model is defined in [RFC8795],
   which is extended by this document to cover the Packet Switch Capable
   (PSC) technology [RFC3471] [RFC7074].

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3.1.  Technology Specific Link Attributes

   The technology agnostic TE Topology model is augmented with packet
   switching specific link attributes:

   augment /nw:networks/tet:te/tet:templates/tet:link-template
             /tet:te-link-attributes
             /tet:interface-switching-capability:
     +--rw packet-switch-capable
        +--rw minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
        +--rw interface-mtu?           uint16
   augment /nw:networks/nw:network/nt:link/tet:te
             /tet:te-link-attributes
             /tet:interface-switching-capability:
     +--rw packet-switch-capable
        +--rw minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
        +--rw interface-mtu?           uint16
   augment /nw:networks/nw:network/nt:link/tet:te
             /tet:information-source-entry
             /tet:interface-switching-capability:
     +--ro packet-switch-capable
        +--ro minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
        +--ro interface-mtu?           uint16

3.2.  Performance Metric

   [RFC7471], [RFC8570] and [RFC7823] specify TE performance metric
   parameters and their usage.  The packet switching augmentations
   specified in this document support such a capability, which can be
   conditional enabled by a YANG feature "te-performance-metric".

   augment /nw:networks/nw:network/nw:node/tet:te
             /tet:te-node-attributes/tet:connectivity-matrices:
     +--rw performance-metric
        +--rw measurement
        |     ......
        +--rw normality
        |     ......
        +--rw throttle
              ......

   Such an augmentation has been applied to:

   o  Connectivity matrices container

   o  Connectivity matrix entry

   o  Local link connectivities container

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   o  Local link connectivity entry

   o  TE link attributes container in a TE link template

   o  TE link attributes container in a TE link

   o  Information source entry in a TE link

4.  Complete Model Tree Structure

4.1.  Layer 3 TE Topology Module

   The model tree structure of the layer 3 TE topology module is as
   shown below:

   module: ietf-l3-te-topology

     augment /nw:networks/nw:network/nw:network-types
               /l3t:l3-unicast-topology:
       +--rw l3-te!
     augment /nw:networks/nw:network/l3t:l3-topology-attributes:
       +--rw l3-te-topology-attributes
          +--rw network-ref?   -> /nw:networks/network/network-id
     augment /nw:networks/nw:network/nw:node/l3t:l3-node-attributes:
       +--rw l3-te-node-attributes
          +--rw node-ref?      leafref
          +--rw network-ref?   -> /nw:networks/network/network-id
     augment /nw:networks/nw:network/nw:node/nt:termination-point
               /l3t:l3-termination-point-attributes:
       +--rw l3-te-tp-attributes
          +--rw tp-ref?        leafref
          +--rw node-ref?      leafref
          +--rw network-ref?   -> /nw:networks/network/network-id
     augment /nw:networks/nw:network/nt:link/l3t:l3-link-attributes:
       +--rw l3-te-link-attributes
          +--rw link-ref?      leafref
          +--rw network-ref?   -> /nw:networks/network/network-id

4.2.  Packet Switching TE Topology Module

   This is an augmentation to base TE topology model.

4.2.1.  Network Types

   This augments the network types with a new network type for TE packet
   topologies.

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   module: ietf-te-topology-packet
     augment /nw:networks/nw:network/nw:network-types/tet:te-topology:
       +--rw packet!

4.2.2.  Node Connectivity Matrix Attributes

   This augments the node connectivity matrix attributes with
   configuration and states for performance metrics when the network
   type is packet.

     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:te-node-attributes/tet:connectivity-matrices:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?

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       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32

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          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32
             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:te-node-attributes/tet:connectivity-matrices
               /tet:connectivity-matrix:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?

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       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32

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          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32
             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64

4.2.3.  Node Information Source

   This augments the node information source with states for performance
   metrics when the network type is packet.

     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:information-source-entry/tet:connectivity-matrices:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?

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       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro throttle {te-performance-metric}?
          +--ro one-way-delay-offset?                  uint32
          +--ro measure-interval?                      uint32
          +--ro advertisement-interval?                uint32
          +--ro suppression-interval?                  uint32
          +--ro threshold-out
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32

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          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-in
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32
          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-accelerated-advertisement
             +--ro one-way-delay?                 uint32
             +--ro one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro two-way-delay?                 uint32
             +--ro one-way-min-delay?             uint32
             +--ro one-way-max-delay?             uint32
             +--ro one-way-delay-variation?       uint32
             +--ro one-way-packet-loss?           decimal64
             +--ro two-way-min-delay?             uint32
             +--ro two-way-max-delay?             uint32
             +--ro two-way-delay-variation?       uint32
             +--ro two-way-packet-loss?           decimal64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:information-source-entry/tet:connectivity-matrices
               /tet:connectivity-matrix:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32

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       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro throttle {te-performance-metric}?
          +--ro one-way-delay-offset?                  uint32
          +--ro measure-interval?                      uint32
          +--ro advertisement-interval?                uint32
          +--ro suppression-interval?                  uint32
          +--ro threshold-out
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?

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          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32
          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-in
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32
          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-accelerated-advertisement
             +--ro one-way-delay?                 uint32
             +--ro one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro two-way-delay?                 uint32
             +--ro one-way-min-delay?             uint32
             +--ro one-way-max-delay?             uint32
             +--ro one-way-delay-variation?       uint32
             +--ro one-way-packet-loss?           decimal64
             +--ro two-way-min-delay?             uint32
             +--ro two-way-max-delay?             uint32
             +--ro two-way-delay-variation?       uint32
             +--ro two-way-packet-loss?           decimal64

Liu, et al.             Expires September 3, 2024              [Page 20]
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4.2.4.  Node Local Link Connectivity

   This augments the node local link connectivity attributes with
   configuration and states for performance metrics when the network
   type is packet.

     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:tunnel-termination-point
               /tet:local-link-connectivities:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality

Liu, et al.             Expires September 3, 2024              [Page 21]
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       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?

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             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32
             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:tunnel-termination-point
               /tet:local-link-connectivities
               /tet:local-link-connectivity:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32

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       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32

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          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32
             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64

4.2.5.  Link Template for Performance Metrics

   This augments the link template attributes with configuration and
   states for performance metrics when the network type is packet.

     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality

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       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32

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          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32
             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64

4.2.6.  Link for Performance Metrics

   This augments the link attributes with configuration and states for
   performance metrics when the network type is packet.

     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32

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       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32
       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--rw throttle {te-performance-metric}?
          +--rw one-way-delay-offset?                  uint32
          +--rw measure-interval?                      uint32
          +--rw advertisement-interval?                uint32
          +--rw suppression-interval?                  uint32
          +--rw threshold-out

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          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-in
          |  +--rw one-way-delay?                 uint32
          |  +--rw one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--rw two-way-delay?                 uint32
          |  +--rw one-way-min-delay?             uint32
          |  +--rw one-way-max-delay?             uint32
          |  +--rw one-way-delay-variation?       uint32
          |  +--rw one-way-packet-loss?           decimal64
          |  +--rw two-way-min-delay?             uint32
          |  +--rw two-way-max-delay?             uint32
          |  +--rw two-way-delay-variation?       uint32
          |  +--rw two-way-packet-loss?           decimal64
          +--rw threshold-accelerated-advertisement
             +--rw one-way-delay?                 uint32
             +--rw one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--rw two-way-delay?                 uint32
             +--rw one-way-min-delay?             uint32
             +--rw one-way-max-delay?             uint32
             +--rw one-way-delay-variation?       uint32
             +--rw one-way-packet-loss?           decimal64
             +--rw two-way-min-delay?             uint32
             +--rw two-way-max-delay?             uint32

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             +--rw two-way-delay-variation?       uint32
             +--rw two-way-packet-loss?           decimal64

4.2.7.  Link Information Source for Performance Metrics

   This augments the link information source with states for performance
   metrics when the network type is packet.

     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry:
       +--ro performance-metrics-one-way {te-performance-metric}?
       |  +--ro one-way-delay?                           uint32
       |  +--ro one-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-residual-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-residual-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-available-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-available-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-utilized-bandwidth?
       |  |       rt-types:bandwidth-ieee-float32
       |  +--ro one-way-utilized-bandwidth-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-min-delay?                       uint32
       |  +--ro one-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-max-delay?                       uint32
       |  +--ro one-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-delay-variation?                 uint32
       |  +--ro one-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro one-way-packet-loss?                     decimal64
       |  +--ro one-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro performance-metrics-two-way {te-performance-metric}?
       |  +--ro two-way-delay?                       uint32
       |  +--ro two-way-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-min-delay?                   uint32
       |  +--ro two-way-min-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-max-delay?                   uint32

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       |  +--ro two-way-max-delay-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-delay-variation?             uint32
       |  +--ro two-way-delay-variation-normality?
       |  |       te-types:performance-metrics-normality
       |  +--ro two-way-packet-loss?                 decimal64
       |  +--ro two-way-packet-loss-normality?
       |          te-types:performance-metrics-normality
       +--ro throttle {te-performance-metric}?
          +--ro one-way-delay-offset?                  uint32
          +--ro measure-interval?                      uint32
          +--ro advertisement-interval?                uint32
          +--ro suppression-interval?                  uint32
          +--ro threshold-out
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32
          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-in
          |  +--ro one-way-delay?                 uint32
          |  +--ro one-way-residual-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-available-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro one-way-utilized-bandwidth?
          |  |       rt-types:bandwidth-ieee-float32
          |  +--ro two-way-delay?                 uint32
          |  +--ro one-way-min-delay?             uint32
          |  +--ro one-way-max-delay?             uint32
          |  +--ro one-way-delay-variation?       uint32
          |  +--ro one-way-packet-loss?           decimal64
          |  +--ro two-way-min-delay?             uint32
          |  +--ro two-way-max-delay?             uint32
          |  +--ro two-way-delay-variation?       uint32
          |  +--ro two-way-packet-loss?           decimal64
          +--ro threshold-accelerated-advertisement

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             +--ro one-way-delay?                 uint32
             +--ro one-way-residual-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-available-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro one-way-utilized-bandwidth?
             |       rt-types:bandwidth-ieee-float32
             +--ro two-way-delay?                 uint32
             +--ro one-way-min-delay?             uint32
             +--ro one-way-max-delay?             uint32
             +--ro one-way-delay-variation?       uint32
             +--ro one-way-packet-loss?           decimal64
             +--ro two-way-min-delay?             uint32
             +--ro two-way-max-delay?             uint32
             +--ro two-way-delay-variation?       uint32
             +--ro two-way-packet-loss?           decimal64

4.2.8.  Link Template for Packet-specific Attributes

   This augments the link template attributes with configuration and
   states for packet-specific attributes when the network type is
   packet.

     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes
               /tet:interface-switching-capability:
       +--rw packet-switch-capable
          +--rw minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
          +--rw interface-mtu?           uint16

4.2.9.  Link for Packet-specific Attributes

   This augments the link attributes with configuration and states for
   packet-specific attributes when the network type is packet.

     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes
               /tet:interface-switching-capability:
       +--rw packet-switch-capable
          +--rw minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
          +--rw interface-mtu?           uint16

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4.2.10.  Link Information Source for Packet-specific Attributes

   This augments the link information source with states for packet-
   specific attributes when the network type is packet.

     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry
               /tet:interface-switching-capability:
       +--ro packet-switch-capable
          +--ro minimum-lsp-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro interface-mtu?           uint16

4.2.11.  TE Bandwidth for Packet-specific Technologies

   These augmentations specify TE bandwidth for packet-specific
   technologies.

     augment /nw:networks/nw:network/nw:node/nt:termination-point/tet:te
               /tet:interface-switching-capability/tet:max-lsp-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw bandwidth-profile-name?   string
          +--rw bandwidth-profile-type?   identityref
          +--rw cir                       uint64
          +--rw cbs                       uint64
          +--rw eir?                      uint64
          +--rw ebs?                      uint64
          +--rw pir?                      uint64
          +--rw pbs?                      uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:te-node-attributes/tet:connectivity-matrices
               /tet:path-constraints/tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:te-node-attributes/tet:connectivity-matrices
               /tet:connectivity-matrix/tet:path-constraints
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:information-source-entry/tet:connectivity-matrices
               /tet:path-constraints/tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro packet-bandwidth?   uint64

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     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:information-source-entry/tet:connectivity-matrices
               /tet:connectivity-matrix/tet:path-constraints
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:tunnel-termination-point/tet:client-layer-adaptation
               /tet:switching-capability/tet:te-bandwidth
               /tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:tunnel-termination-point
               /tet:local-link-connectivities/tet:path-constraints
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nw:node/tet:te
               /tet:tunnel-termination-point
               /tet:local-link-connectivities
               /tet:local-link-connectivity/tet:path-constraints
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes
               /tet:interface-switching-capability/tet:max-lsp-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw bandwidth-profile-name?   string
          +--rw bandwidth-profile-type?   identityref
          +--rw cir                       uint64
          +--rw cbs                       uint64
          +--rw eir?                      uint64
          +--rw ebs?                      uint64
          +--rw pir?                      uint64
          +--rw pbs?                      uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes/tet:max-link-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes/tet:max-resv-link-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64

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     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:te-link-attributes/tet:unreserved-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry
               /tet:interface-switching-capability/tet:max-lsp-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro bandwidth-profile-name?   string
          +--ro bandwidth-profile-type?   identityref
          +--ro cir                       uint64
          +--ro cbs                       uint64
          +--ro eir?                      uint64
          +--ro ebs?                      uint64
          +--ro pir?                      uint64
          +--ro pbs?                      uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry/tet:max-link-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry/tet:max-resv-link-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro packet-bandwidth?   uint64
     augment /nw:networks/nw:network/nt:link/tet:te
               /tet:information-source-entry/tet:unreserved-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--ro packet-bandwidth?   uint64
     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes
               /tet:interface-switching-capability/tet:max-lsp-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw bandwidth-profile-name?   string
          +--rw bandwidth-profile-type?   identityref
          +--rw cir                       uint64
          +--rw cbs                       uint64
          +--rw eir?                      uint64
          +--rw ebs?                      uint64
          +--rw pir?                      uint64
          +--rw pbs?                      uint64
     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes/tet:max-link-bandwidth

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               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes/tet:max-resv-link-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64
     augment /nw:networks/tet:te/tet:templates/tet:link-template
               /tet:te-link-attributes/tet:unreserved-bandwidth
               /tet:te-bandwidth/tet:technology:
       +--:(packet)
          +--rw packet-bandwidth?   uint64

5.  YANG Modules

5.1.  Layer 3 TE Topology Module

   This module references [RFC8345], [RFC8346], and [RFC8795].

   <CODE BEGINS> file "ietf-l3-te-topology@2024-03-02.yang"
   module ietf-l3-te-topology {
     yang-version 1.1;
     namespace "urn:ietf:params:xml:ns:yang:ietf-l3-te-topology";
     prefix "l3tet";

     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-l3-unicast-topology {
       prefix "l3t";
       reference "RFC 8346: A YANG Data Model for Layer 3 Topologies";
     }
     import ietf-te-topology {
       prefix "tet";
       reference
         "RFC 8795: YANG Data Model for Traffic Engineering (TE)
          Topologies";
     }

     organization

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       "IETF Traffic Engineering Architecture and Signaling (TEAS)
        Working Group";

     contact
       "WG Web:   <http://tools.ietf.org/wg/teas/>
        WG List:  <mailto:teas@ietf.org>

        Editor:   Xufeng Liu
                  <mailto:xufeng.liu.ietf@gmail.com>

        Editor:   Igor Bryskin
                  <mailto:Igor.Bryskin@huawei.com>

        Editor:   Vishnu Pavan Beeram
                  <mailto:vbeeram@juniper.net>

        Editor:   Tarek Saad
                  <mailto:tsaad@cisco.com>

        Editor:   Himanshu Shah
                  <mailto:hshah@ciena.com>

        Editor:   Oscar Gonzalez De Dios
                  <mailto:oscar.gonzalezdedios@telefonica.com>";

     description
       "YANG data model for representing and manipulating Layer 3 TE
        Topologies.

        Copyright (c) 2024 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 Revised BSD License set
        forth in Section 4.c of the IETF Trust's Legal Provisions
        Relating to IETF Documents
        (https://trustee.ietf.org/license-info).

        This version of this YANG module is part of RFC XXXX
        (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
        for full legal notices.";

     revision 2024-03-02 {
       description
         "Initial revision";
       reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }

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     grouping l3-te-topology-type {
       description
         "Identifies the L3 TE topology type.";
       container l3-te {
         presence "Indicates L3 TE Topology";
         description
           "Its presence identifies the L3 TE topology type.";
       }
     }

     augment "/nw:networks/nw:network/nw:network-types/"
       + "l3t:l3-unicast-topology" {
       description
         "Defines the L3 TE topology type.";
       uses l3-te-topology-type;
     }

     augment "/nw:networks/nw:network/l3t:l3-topology-attributes" {
       when "../nw:network-types/l3t:l3-unicast-topology/l3tet:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment topology configuration";
       uses l3-te-topology-attributes;
     }

     augment "/nw:networks/nw:network/nw:node/l3t:l3-node-attributes" {
       when "../../nw:network-types/l3t:l3-unicast-topology/"
         + "l3tet:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment node configuration";
       uses l3-te-node-attributes;
     }

     augment "/nw:networks/nw:network/nw:node/nt:termination-point/"
       + "l3t:l3-termination-point-attributes" {
       when "../../../nw:network-types/l3t:l3-unicast-topology/"
         + "l3tet:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment termination point configuration";
       uses l3-te-tp-attributes;

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     }

     augment "/nw:networks/nw:network/nt:link/l3t:l3-link-attributes" {
       when "../../nw:network-types/l3t:l3-unicast-topology/"
         + "l3tet:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment link configuration";
       uses l3-te-link-attributes;
     }

     grouping l3-te-topology-attributes {
       description
         "L3 TE topology scope attributes";
       container l3-te-topology-attributes {
         must "/nw:networks/nw:network"
           + "[nw:network-id = current()/network-ref]/nw:network-types/"
           + "tet:te-topology" {
           error-message
             "The referenced network must be a TE topology.";
           description
             "The referenced network must be a TE topology.";
         }
         description
           "Containing TE topology references";
         uses nw:network-ref;
       } // l3-te-topology-attributes
     } // l3-te-topology-attributes

     grouping l3-te-node-attributes {
       description
         "L3 TE node scope attributes";
       container l3-te-node-attributes {
         must "/nw:networks/nw:network"
           + "[nw:network-id = current()/network-ref]/nw:network-types/"
           + "tet:te-topology" {
           error-message
             "The referenced network must be a TE topology.";
           description
             "The referenced network must be a TE topology.";
         }
         description
           "Containing TE node references";
         uses nw:node-ref;
       } // l3-te
     } // l3-te-node-attributes

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     grouping l3-te-tp-attributes {
       description
         "L3 TE termination point scope attributes";
       container l3-te-tp-attributes {
         must "/nw:networks/nw:network"
           + "[nw:network-id = current()/network-ref]/nw:network-types/"
           + "tet:te-topology" {
           error-message
             "The referenced network must be a TE topology.";
           description
             "The referenced network must be a TE topology.";
         }
         description
           "Containing TE termination point references";
         uses nt:tp-ref;
       } // l3-te
     } // l3-te-tp-attributes

     grouping l3-te-link-attributes {
       description
         "L3 TE link scope attributes";
       container l3-te-link-attributes {
         must "/nw:networks/nw:network"
           + "[nw:network-id = current()/network-ref]/nw:network-types/"
           + "tet:te-topology" {
           error-message
             "The referenced network must be a TE topology.";
           description
             "The referenced network must be a TE topology.";
         }
         description
           "Containing TE link references";
         uses nt:link-ref;
       }
     } // l3-te-link-attributes
   }
   <CODE ENDS>

5.2.  Packet Switching TE Topology Module

   This module references [RFC7471], [RFC7823], [RFC8294], [RFC8345],
   [RFC8570], [RFC8795], and [I-D.ietf-teas-rfc8776-update].

   <CODE BEGINS> file "ietf-te-topology-packet@2024-03-02.yang"
   module ietf-te-topology-packet {

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     yang-version 1.1;
     namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology-packet";

     prefix "tet-pkt";

     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-routing-types {
       prefix "rt-types";
       reference
         "RFC 8294: Common YANG Data Types for the Routing Area";
     }

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

     import ietf-te-types {
       prefix "te-types";
       reference
         "I-D.ietf-teas-rfc8776-update: Common YANG Data Types for
          Traffic Engineering";
     }

     import ietf-te-packet-types {
       prefix "te-packet-types";
       reference
         "I-D.ietf-teas-rfc8776-update: Common YANG Data Types for
          Traffic Engineering";
     }

     organization
       "Traffic Engineering Architecture and Signaling (TEAS)
        Working Group";

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     contact
       "WG Web:   <http://tools.ietf.org/wg/teas/>
        WG List:  <mailto:teas@ietf.org>

        Editor:   Xufeng Liu
                  <mailto:xufeng.liu.ietf@gmail.com>

        Editor:   Igor Bryskin
                  <mailto:Igor.Bryskin@huawei.com>

        Editor:   Vishnu Pavan Beeram
                  <mailto:vbeeram@juniper.net>

        Editor:   Tarek Saad
                  <mailto:tsaad@cisco.com>

        Editor:   Himanshu Shah
                  <mailto:hshah@ciena.com>

        Editor:   Oscar Gonzalez De Dios
                  <mailto:oscar.gonzalezdedios@telefonica.com>";

     description
       "YANG data model for representing and manipulating PSC (Packet
        Switching) TE Topologies.

        Copyright (c) 2024 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 Revised BSD License set
        forth in Section 4.c of the IETF Trust's Legal Provisions
        Relating to IETF Documents
        (https://trustee.ietf.org/license-info).

        This version of this YANG module is part of RFC XXXX
        (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
        for full legal notices.";

     revision 2024-03-02 {
       description
         "Initial revision";
       reference
         "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }

     /*

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      * Features
      */

     feature te-performance-metric {
       description
         "This feature indicates that the system supports
          TE performance metric.";
       reference
         "RFC7471: OSPF Traffic Engineering (TE) Metric Extensions.
          RFC8570: IS-IS Traffic Engineering (TE) Metric Extensions.
          RFC7823: Performance-Based Path Selection for Explicitly
          Routed Label Switched Paths (LSPs) Using TE Metric
          Extensions";
     }

     /*
      * Groupings
      */
     grouping packet-switch-capable-container {
       description
         "The container of packet switch capable attributes.";
       container packet-switch-capable {
         description
           "Interface has packet-switching capabilities.";
         leaf minimum-lsp-bandwidth {
           type rt-types:bandwidth-ieee-float32;
           description
             "Minimum LSP Bandwidth. Units in bytes per second";
         }
         leaf interface-mtu {
           type uint16;
           description
             "Interface MTU.";
         }
       }
     }

     /*
      * Augmentations
      */
     /* Augmentations to network-types */
     augment "/nw:networks/nw:network/nw:network-types/"
       + "tet:te-topology" {
       description
         "Defines the packet TE topology type.";
       container packet {
         presence "Indicates packet TE topology.";
         description

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           "Its presence identifies the packet TE topology type.";
       }
     }

     /* Augmentations to connectivity-matrix */
     augment "/nw:networks/nw:network/nw:node/tet:te/"
       + "tet:te-node-attributes/tet:connectivity-matrices" {
       when "../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:te-node-attributes/tet:connectivity-matrices/"
           + "tet:connectivity-matrix" {
       when "../../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }

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       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:information-source-entry/tet:connectivity-matrices" {
       when "../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:information-source-entry/tet:connectivity-matrices/"
           + "tet:connectivity-matrix" {
       when "../../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     /* Augmentations to tunnel-termination-point */
     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:tunnel-termination-point/"
           + "tet:local-link-connectivities" {
       when "../../../../nw:network-types/tet:te-topology/"

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         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:tunnel-termination-point/"
           + "tet:local-link-connectivities/"
           + "tet:local-link-connectivity" {
       when "../../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     /* Augmentations to te-link-attributes */

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     augment "/nw:networks/tet:te/tet:templates/"
           + "tet:link-template/tet:te-link-attributes" {
       when "tet:interface-switching-capability "
         + "[tet:switching-capability = 'te-types:switching-psc1']" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes" {
       when "(../../../nw:network-types/tet:te-topology/tet-pkt:packet)"
         + " and (tet:interface-switching-capability "
         + "[tet:switching-capability = 'te-types:switching-psc1'])" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
         refine performance-metrics-one-way {
           config false;
         }
         refine performance-metrics-two-way {
           config false;
         }
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

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     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry" {
       when "(../../../nw:network-types/tet:te-topology/tet-pkt:packet)"
         + " and (tet:interface-switching-capability "
         + "[tet:switching-capability = 'te-types:switching-psc1'])" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature te-performance-metric;
       }
     }

     /* Augmentations to interface-switching-capability */
     augment "/nw:networks/tet:te/tet:templates/"
           + "tet:link-template/tet:te-link-attributes/"
           + "tet:interface-switching-capability" {
       when "tet:switching-capability = 'te-types:switching-psc1' " {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses packet-switch-capable-container;
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes/"
           + "tet:interface-switching-capability" {
       when "(../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet) and "
         + "(tet:switching-capability = 'te-types:switching-psc1')" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses packet-switch-capable-container;
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry/"

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           + "tet:interface-switching-capability" {
       when "(../../../../nw:network-types/tet:te-topology/"
         + "tet-pkt:packet) and "
         + "(tet:switching-capability = 'te-types:switching-psc1')" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses packet-switch-capable-container;
     }

     /*
      * Augment TE bandwidth
      */

     augment "/nw:networks/nw:network/nw:node/nt:termination-point/"
           + "tet:te/"
           + "tet:interface-switching-capability/tet:max-lsp-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the link termination
          point (LTP).";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:te-node-attributes/tet:connectivity-matrices/"
           + "tet:path-constraints/tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the TE node
          connectivity matrices.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;

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       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:te-node-attributes/tet:connectivity-matrices/"
           + "tet:connectivity-matrix/"
           + "tet:path-constraints/tet:te-bandwidth/tet:technology" {
       when "../../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the
          connectivity matrix entry.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:information-source-entry/tet:connectivity-matrices/"
           + "tet:path-constraints/tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the TE node
          connectivity matrices information source.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:information-source-entry/tet:connectivity-matrices/"
           + "tet:connectivity-matrix/"
           + "tet:path-constraints/tet:te-bandwidth/tet:technology" {
       when "../../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }

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       description
         "Augment TE bandwidth path constraints of the
          connectivity matrix entry information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:tunnel-termination-point/"
           + "tet:client-layer-adaptation/tet:switching-capability/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment client TE bandwidth of the tunnel termination point
          (TTP)";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:tunnel-termination-point/"
           + "tet:local-link-connectivities/tet:path-constraints/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints for the TTP
          Local Link Connectivities.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nw:node/tet:te/"
           + "tet:tunnel-termination-point/"
           + "tet:local-link-connectivities/"
           + "tet:local-link-connectivity/tet:path-constraints/"

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           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints for the TTP
          Local Link Connectivity entry.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes/"
           + "tet:interface-switching-capability/tet:max-lsp-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the TE link.";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes/"
           + "tet:max-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum TE bandwidth for the TE link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

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     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes/"
           + "tet:max-resv-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum reservable TE bandwidth for the TE link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:te-link-attributes/"
           + "tet:unreserved-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment unreserved TE bandwidth for the TE Link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry/"
           + "tet:interface-switching-capability/"
           + "tet:max-lsp-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the TE link
          information source";

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       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry/"
           + "tet:max-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum TE bandwidth for the TE link
          information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry/"
           + "tet:max-resv-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum reservable TE bandwidth for the TE link
          information-source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/nw:network/nt:link/tet:te/"
           + "tet:information-source-entry/"
           + "tet:unreserved-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       when "../../../../../nw:network-types/tet:te-topology/"
          + "tet-pkt:packet" {
         description

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           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment unreserved TE bandwidth of the TE link
          information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/tet:te/tet:templates/"
           + "tet:link-template/tet:te-link-attributes/"
           + "tet:interface-switching-capability/"
           + "tet:max-lsp-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       description
         "Augment maximum LSP TE bandwidth of the TE link
          template";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw:networks/tet:te/tet:templates/"
           + "tet:link-template/tet:te-link-attributes/"
           + "tet:max-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       description
         "Augment maximum TE bandwidth the TE link template";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/tet:te/tet:templates/"
           + "tet:link-template/tet:te-link-attributes/"
           + "tet:max-resv-link-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       description
         "Augment maximum reservable TE bandwidth for the TE link
          template.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw:networks/tet:te/tet:templates/"

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           + "tet:link-template/tet:te-link-attributes/"
           + "tet:unreserved-bandwidth/"
           + "tet:te-bandwidth/tet:technology" {
       description
         "Augment unreserved TE bandwidth the TE link template";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }
   }
   <CODE ENDS>

6.  IANA Considerations

   RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
   actual RFC number (and remove this note).

   This document registers the following namespace URIs in the IETF XML
   registry [RFC3688]:

   --------------------------------------------------------------------
   URI: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.
   --------------------------------------------------------------------

   --------------------------------------------------------------------
   URI: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.
   --------------------------------------------------------------------

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

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

   This document registers the following YANG modules in the YANG Module
   Names registry [RFC6020]:

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   --------------------------------------------------------------------
   name:         ietf-l3-te-topology
   namespace:    urn:ietf:params:xml:ns:yang:ietf-l3-te-topology
   prefix:       l3tet
   reference:    RFC XXXX
   --------------------------------------------------------------------

   --------------------------------------------------------------------
   name:         ietf-l3-te-topology-state
   namespace:    urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state
   prefix:       l3tet-s
   reference:    RFC XXXX
   --------------------------------------------------------------------

   --------------------------------------------------------------------
   name:         ietf-te-topology-packet
   namespace:    urn:ietf:params:xml:ns:yang:ietf-te-topology-packet
   prefix:       tet-pkt
   reference:    RFC XXXX
   --------------------------------------------------------------------

   --------------------------------------------------------------------
   name:         ietf-te-topology-packet-state
   namespace:  urn:ietf:params:xml:ns:yang:ietf-te-topology-packet-state
   prefix:       tet-pkt-s
   reference:    RFC XXXX
   --------------------------------------------------------------------

7.  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 Network Configuration Access Control Model (NACM) [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

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   effect on network operations.  These are the subtrees and data nodes
   and their sensitivity/vulnerability:

   /nw:networks/nw:network/nw:network-types/l3t:l3-unicast-topology/
   l3-te
      This subtree specifies the layer 3 TE topology type.  Modifying
      the configurations can make layer 3 TE topology type invalid and
      cause interruption to all layer 3 TE networks.

   /nw:networks/nw:network/l3t:l3-topology-attributes/l3-te-topology-
   attributes
      This subtree specifies the topology-wide configurations, including
      the reference to a TE topology from a layer 3 TE topology.
      Modifying the configurations here can cause traffic disabled or
      rerouted in this topology and the connected topologies.

   /nw:networks/nw:network/nw:node/l3t:l3-node-attributes/l3-te-node-
   attributes
      This subtree specifies the configurations of layer 3 TE nodes.
      Modifying the configurations in this subtree can change the
      relationship between a TE node and a node in a layer 3 TE
      topology, causing traffic disabled or rerouted in the specified
      nodes and the related layer 3 topologies.

   /nw:networks/nw:network/nw:node/nt:termination-point//l3t:l3-
   termination-point-attributes/l3-te-tp-attributes
      This subtree specifies the configurations of layer 3 TE link
      termination points.  Modifying the configurations in this subtree
      can change the relationship between a TE link termination point
      and a link termination point in a layer 3 TE topology, causing
      traffic disabled or rerouted on the related layer 3 links and the
      related layer 3 topologies.

   /nw:networks/nw:network/nt:link/l3t:l3-link-attributes/l3-te-link-
   attributes
      This subtree specifies the configurations of layer 3 TE links.
      Modifying the configurations in this subtree can change the
      relationship between a TE link and a link in a layer 3 TE
      topology, causing traffic disabled or rerouted on the specified
      layer 3 link and the related layer 3 topologies.

   performance-metric containers
      The container "performance-metric" is augmented to multiple
      locations of the base TE topology model, as specified in
      Section 3.2.  Modifying the configuration in such a container can
      change the behaviors of performance metric monitoring, causing
      traffic disabled or rerouted on the related layer 3 links, nodes,
      or topologies.

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

   /nw:networks/nw:network/nw:network-types/l3t:l3-unicast-topology/
   l3-te
      Unauthorized access to this subtree can disclose the layer 3 TE
      topology type.

   /nw:networks/nw:network/l3t:l3-topology-attributes/l3-te-topology-
   attributes
      Unauthorized access to this subtree can disclose the topology-wide
      configurations, including the reference to a TE topology from a
      layer 3 topology.

   /nw:networks/nw:network/nw:node/l3t:l3-node-attributes/l3-te-node-
   attributes
      Unauthorized access to this subtree can disclose the operational
      state information of layer 3 TE nodes.

   /nw:networks/nw:network/nw:node/nt:termination-point//l3t:l3-
   termination-point-attributes/l3-te-tp-attributes
      Unauthorized access to this subtree can disclose the operational
      state information of layer 3 TE link termination points.

   /nw:networks/nw:network/nt:link/l3t:l3-link-attributes/l3-te-link-
   attributes
      Unauthorized access to this subtree can disclose the operational
      state information of layer 3 TE links.

   performance-metric containers
      The container "performance-metric" is augmented to multiple
      locations of the base TE topology model, as specified in
      Section 3.2.  Unauthorized access to this subtree can disclose the
      operational state information of performance metric monitoring.

8.  References

8.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

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   [RFC3471]  Berger, L., Ed., "Generalized Multi-Protocol Label
              Switching (GMPLS) Signaling Functional Description",
              RFC 3471, DOI 10.17487/RFC3471, January 2003,
              <https://www.rfc-editor.org/info/rfc3471>.

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

   [RFC6020]  Bjorklund, M., Ed., "YANG - A Data Modeling Language for
              the Network Configuration Protocol (NETCONF)", RFC 6020,
              DOI 10.17487/RFC6020, October 2010,
              <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, June 2011,
              <https://www.rfc-editor.org/info/rfc6241>.

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

   [RFC7074]  Berger, L. and J. Meuric, "Revised Definition of the GMPLS
              Switching Capability and Type Fields", RFC 7074,
              DOI 10.17487/RFC7074, November 2013,
              <https://www.rfc-editor.org/info/rfc7074>.

   [RFC7471]  Giacalone, S., Ward, D., Drake, J., Atlas, A., and S.
              Previdi, "OSPF Traffic Engineering (TE) Metric
              Extensions", RFC 7471, DOI 10.17487/RFC7471, March 2015,
              <https://www.rfc-editor.org/info/rfc7471>.

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

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

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

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   [RFC8294]  Liu, X., Qu, Y., Lindem, A., Hopps, C., and L. Berger,
              "Common YANG Data Types for the Routing Area", RFC 8294,
              DOI 10.17487/RFC8294, December 2017,
              <https://www.rfc-editor.org/info/rfc8294>.

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

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

   [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, March
              2018, <https://www.rfc-editor.org/info/rfc8345>.

   [RFC8346]  Clemm, A., Medved, J., Varga, R., Liu, X.,
              Ananthakrishnan, H., and N. Bahadur, "A YANG Data Model
              for Layer 3 Topologies", RFC 8346, DOI 10.17487/RFC8346,
              March 2018, <https://www.rfc-editor.org/info/rfc8346>.

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

   [RFC8570]  Ginsberg, L., Ed., Previdi, S., Ed., Giacalone, S., Ward,
              D., Drake, J., and Q. Wu, "IS-IS Traffic Engineering (TE)
              Metric Extensions", RFC 8570, DOI 10.17487/RFC8570, March
              2019, <https://www.rfc-editor.org/info/rfc8570>.

   [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, August 2020,
              <https://www.rfc-editor.org/info/rfc8795>.

   [I-D.ietf-teas-rfc8776-update]
              Busi, I., Guo, A., Liu, X., Saad, T., and I. Bryskin,
              "Common YANG Data Types for Traffic Engineering", draft-
              ietf-teas-rfc8776-update-10 (work in progress), February
              2024, <https://datatracker.ietf.org/doc/html/draft-ietf-
              teas-rfc8776-update-10>.

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8.2.  Informative References

   [RFC7823]  Atlas, A., Drake, J., Giacalone, S., and S. Previdi,
              "Performance-Based Path Selection for Explicitly Routed
              Label Switched Paths (LSPs) Using TE Metric Extensions",
              RFC 7823, DOI 10.17487/RFC7823, May 2016,
              <https://www.rfc-editor.org/info/rfc7823>.

   [RFC7951]  Lhotka, L., "JSON Encoding of Data Modeled with YANG",
              RFC 7951, DOI 10.17487/RFC7951, August 2016,
              <https://www.rfc-editor.org/info/rfc7951>.

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

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Appendix A.  Companion YANG Model for Non-NMDA Compliant Implementations

   The YANG modules ietf-l3-te-topology and ietf-te-topology-packet
   defined in this document are designed to be used in conjunction with
   implementations that support the Network Management Datastore
   Architecture (NMDA) defined in [RFC8342].  In order to allow
   implementations to use the model even in cases when NMDA is not
   supported, the following companion modules, ietf-l3-te-topology-state
   and ietf-te-topology-packet-state, are defined as state models, which
   mirror the modules ietf-l3-te-topology and ietf-te-topology-packet
   defined earlier in this document.  However, all data nodes in the
   companion module are non-configurable, to represent the applied
   configuration or the derived operational states.

   The companion modules, ietf-l3-te-topology-state and ietf-te-
   topology-packet-state, are redundant and SHOULD NOT be supported by
   implementations that support NMDA.

   As the structure of the companion modules mirrors that of the
   coorespinding NMDA models, the YANG trees of the companion modules
   are not depicted separately.

A.1.  Layer 3 TE Topology State Module

   This module references [RFC8345], and [RFC8346].

   <CODE BEGINS> file "ietf-l3-te-topology-state@2024-03-02.yang"
   module ietf-l3-te-topology-state {
     yang-version 1.1;
     namespace "urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state";
     prefix "l3tet-s";

     import ietf-l3-te-topology {
       prefix "l3tet";
       reference
         "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }
     import ietf-network-state {
       prefix "nw-s";
       reference "RFC 8345: A YANG Data Model for Network Topologies";
     }
     import ietf-network-topology-state {
       prefix "nt-s";
       reference "RFC 8345: A YANG Data Model for Network Topologies";
     }
     import ietf-l3-unicast-topology-state {
       prefix "l3t-s";

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       reference "RFC 8346: A YANG Data Model for Layer 3 Topologies";
     }

     organization
       "IETF Traffic Engineering Architecture and Signaling (TEAS)
        Working Group";

     contact
       "WG Web:   <http://tools.ietf.org/wg/teas/>
        WG List:  <mailto:teas@ietf.org>

        Editor:   Xufeng Liu
                  <mailto:xufeng.liu.ietf@gmail.com>

        Editor:   Igor Bryskin
                  <mailto:Igor.Bryskin@huawei.com>

        Editor:   Vishnu Pavan Beeram
                  <mailto:vbeeram@juniper.net>

        Editor:   Tarek Saad
                  <mailto:tsaad@cisco.com>

        Editor:   Himanshu Shah
                  <mailto:hshah@ciena.com>

        Editor:   Oscar Gonzalez De Dios
                  <mailto:oscar.gonzalezdedios@telefonica.com>";

     description
       "YANG data model for representing operational state information
        of Layer 3 TE Topologies, when NMDA is not supported.

        Copyright (c) 2024 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 Revised BSD License set
        forth in Section 4.c of the IETF Trust's Legal Provisions
        Relating to IETF Documents
        (https://trustee.ietf.org/license-info).

        This version of this YANG module is part of RFC XXXX
        (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
        for full legal notices.";

     revision 2024-03-02 {

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       description
         "Initial revision";
       reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }

     augment "/nw-s:networks/nw-s:network/nw-s:network-types/"
       + "l3t-s:l3-unicast-topology" {
       description
         "Defines the L3 TE topology type.";
       uses l3tet:l3-te-topology-type;
     }

     augment "/nw-s:networks/nw-s:network/"
       + "l3t-s:l3-topology-attributes" {
       when "../nw-s:network-types/l3t-s:l3-unicast-topology/"
         + "l3tet-s:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment topology configuration";
       uses l3tet:l3-te-topology-attributes;
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/"
       + "l3t-s:l3-node-attributes" {
       when "../../nw-s:network-types/l3t-s:l3-unicast-topology/"
         + "l3tet-s:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment node configuration";
       uses l3tet:l3-te-node-attributes;
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/"
       + "nt-s:termination-point/"
       + "l3t-s:l3-termination-point-attributes" {
       when "../../../nw-s:network-types/l3t-s:l3-unicast-topology/"
         + "l3tet-s:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment termination point configuration";
       uses l3tet:l3-te-tp-attributes;
     }

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     augment "/nw-s:networks/nw-s:network/nt-s:link/"
       + "l3t-s:l3-link-attributes" {
       when "../../nw-s:network-types/l3t-s:l3-unicast-topology/"
         + "l3tet-s:l3-te" {
         description
           "Augment only for L3 TE topology";
       }
       description
         "Augment link configuration";
       uses l3tet:l3-te-link-attributes;
     }
   }
   <CODE ENDS>

A.2.  Packet Switching TE Topology State Module

   This module references [RFC8345], [RFC8795], and
   [I-D.ietf-teas-rfc8776-update].

   <CODE BEGINS> file "ietf-te-topology-packet-state@2024-03-02.yang"
   module ietf-te-topology-packet-state {
     yang-version 1.1;
     namespace
       "urn:ietf:params:xml:ns:yang:ietf-te-topology-packet-state";

     prefix "tet-pkt-s";

     import ietf-te-topology-packet {
       prefix "tet-pkt";
       reference
         "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }

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

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

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

     import ietf-te-types {
       prefix "te-types";
       reference
         "I-D.ietf-teas-rfc8776-update: Common YANG Data Types for
          Traffic Engineering";
     }

     import ietf-te-packet-types {
       prefix "te-packet-types";
       reference
         "I-D.ietf-teas-rfc8776-update: Common YANG Data Types for
          Traffic Engineering";
     }

     organization
       "Traffic Engineering Architecture and Signaling (TEAS)
        Working Group";

     contact
       "WG Web:   <http://tools.ietf.org/wg/teas/>
        WG List:  <mailto:teas@ietf.org>

        Editor:   Xufeng Liu
                  <mailto:xufeng.liu.ietf@gmail.com>

        Editor:   Igor Bryskin
                  <mailto:Igor.Bryskin@huawei.com>

        Editor:   Vishnu Pavan Beeram
                  <mailto:vbeeram@juniper.net>

        Editor:   Tarek Saad
                  <mailto:tsaad@cisco.com>

        Editor:   Himanshu Shah
                  <mailto:hshah@ciena.com>

        Editor:   Oscar Gonzalez De Dios
                  <mailto:oscar.gonzalezdedios@telefonica.com>";

     description

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       "YANG data model for representing operational state information
        of PSC (Packet Switching) TE Topologies, when NMDA is not
         supported.

        Copyright (c) 2024 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 Revised BSD License set
        forth in Section 4.c of the IETF Trust's Legal Provisions
        Relating to IETF Documents
        (https://trustee.ietf.org/license-info).

        This version of this YANG module is part of RFC XXXX
        (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
        for full legal notices.";

     revision 2024-03-02 {
       description
         "Initial revision";
       reference
         "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
     }

     /*
      * Augmentations
      */
     /* Augmentations to network-types */
     augment "/nw-s:networks/nw-s:network/nw-s:network-types/"
       + "tet-s:te-topology" {
       description
         "Defines the packet TE topology type.";
       container packet {
         presence "Indicates packet TE topology.";
         description
           "Its presence identifies the packet TE topology type.";
       }
     }

     /* Augmentations to connectivity-matrix */
     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
       + "tet-s:te-node-attributes/tet-s:connectivity-matrices" {
       when "../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";
       }

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       description
         "Parameters for PSC (Packet Switching) TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:te-node-attributes/tet-s:connectivity-matrices/"
           + "tet-s:connectivity-matrix" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:connectivity-matrices" {
       when "../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

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     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:connectivity-matrices/"
           + "tet-s:connectivity-matrix" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     /* Augmentations to tunnel-termination-point */
     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:tunnel-termination-point/"
           + "tet-s:local-link-connectivities" {
       when "../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:tunnel-termination-point/"
           + "tet-s:local-link-connectivities/"
           + "tet-s:local-link-connectivity" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet" {
         description
           "Augment only for packet TE topology";

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       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     /* Augmentations to te-link-attributes */
     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes" {
       when "tet-s:interface-switching-capability "
         + "[tet-s:switching-capability = 'te-types:switching-psc1']" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes" {
       when "(../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet) and "
         + "(tet-s:interface-switching-capability "
         + "[tet-s:switching-capability = 'te-types:switching-psc1'])" {
         description "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }

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     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:information-source-entry" {
       when "(../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet) and "
         + "(tet-s:interface-switching-capability "
         + "[tet-s:switching-capability = 'te-types:switching-psc1'])" {
         description "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses te-packet-types:performance-metrics-attributes-packet {
         if-feature tet-pkt:te-performance-metric;
       }
       uses
         te-packet-types:performance-metrics-throttle-container-packet {
         if-feature tet-pkt:te-performance-metric;
       }
     }

     /* Augmentations to interface-switching-capability */
     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes/"
           + "tet-s:interface-switching-capability" {
       when "tet-s:switching-capability = 'te-types:switching-psc1' " {
         description "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses tet-pkt:packet-switch-capable-container;
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes/"
           + "tet-s:interface-switching-capability" {
       when "(../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet) and "
         + "(tet-s:switching-capability = 'te-types:switching-psc1')" {
         description "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses tet-pkt:packet-switch-capable-container;
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:information-source-entry/"

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           + "tet-s:interface-switching-capability" {
       when "(../../../../nw-s:network-types/tet-s:te-topology/"
         + "tet-pkt-s:packet) and "
         + "(tet-s:switching-capability = 'te-types:switching-psc1')" {
         description
           "Valid only for PSC";
       }
       description
         "Parameters for PSC TE topology.";
       uses tet-pkt:packet-switch-capable-container;
     }

     /*
      * Augment TE bandwidth
      */

     augment "/nw-s:networks/nw-s:network/nw-s:node/"
           + "nt-s:termination-point/tet-s:te/"
           + "tet-s:interface-switching-capability/"
           + "tet-s:max-lsp-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the link termination
          point (LTP).";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:te-node-attributes/tet-s:connectivity-matrices/"
           + "tet-s:path-constraints/tet-s:te-bandwidth/"
           + "tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the TE node
          connectivity matrices.";

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       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:te-node-attributes/tet-s:connectivity-matrices/"
           + "tet-s:connectivity-matrix/"
           + "tet-s:path-constraints/tet-s:te-bandwidth/"
           + "tet-s:technology" {
       when "../../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the
          connectivity matrix entry.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:connectivity-matrices/tet-s:path-constraints/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the TE node
          connectivity matrices information source.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:connectivity-matrices/tet-s:connectivity-matrix/"
           + "tet-s:path-constraints/tet-s:te-bandwidth/"
           + "tet-s:technology" {
       when "../../../../../../../nw-s:network-types/tet-s:te-topology/"

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          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints of the
          connectivity matrix entry information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:tunnel-termination-point/"
           + "tet-s:client-layer-adaptation/tet-s:switching-capability/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment client TE bandwidth of the tunnel termination point
          (TTP)";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:tunnel-termination-point/"
           + "tet-s:local-link-connectivities/tet-s:path-constraints/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints for the TTP
          Local Link Connectivities.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

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     augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/"
           + "tet-s:tunnel-termination-point/"
           + "tet-s:local-link-connectivities/"
           + "tet-s:local-link-connectivity/tet-s:path-constraints/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment TE bandwidth path constraints for the TTP
          Local Link Connectivity entry.";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes/"
           + "tet-s:interface-switching-capability/"
           + "tet-s:max-lsp-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the TE link.";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes/"
           + "tet-s:max-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description

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         "Augment maximum TE bandwidth for the TE link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes/"
           + "tet-s:max-resv-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum reservable TE bandwidth for the TE link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:te-link-attributes/"
           + "tet-s:unreserved-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment unreserved TE bandwidth for the TE Link";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:interface-switching-capability/"
           + "tet-s:max-lsp-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description

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           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum LSP TE bandwidth for the TE link
          information source";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:max-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum TE bandwidth for the TE link
          information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"
           + "tet-s:information-source-entry/"
           + "tet-s:max-resv-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment maximum reservable TE bandwidth for the TE link
          information-source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/"

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           + "tet-s:information-source-entry/"
           + "tet-s:unreserved-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       when "../../../../../nw-s:network-types/tet-s:te-topology/"
          + "tet-pkt-s:packet" {
         description
           "Augmentation parameters apply only for networks with
            Packet TE topology type.";
       }
       description
         "Augment unreserved TE bandwidth of the TE link
          information source";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes/"
           + "tet-s:interface-switching-capability/"
           + "tet-s:max-lsp-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       description
         "Augment maximum LSP TE bandwidth of the TE link
          template";
       case packet {
         uses te-packet-types:te-packet-path-bandwidth;
       }
     }

     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes/"
           + "tet-s:max-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       description
         "Augment maximum TE bandwidth the TE link template";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes/"
           + "tet-s:max-resv-link-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       description
         "Augment maximum reservable TE bandwidth for the TE link
          template.";

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       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }

     augment "/nw-s:networks/tet-s:te/tet-s:templates/"
           + "tet-s:link-template/tet-s:te-link-attributes/"
           + "tet-s:unreserved-bandwidth/"
           + "tet-s:te-bandwidth/tet-s:technology" {
       description
         "Augment unreserved TE bandwidth the TE link template";
       case packet {
         uses te-packet-types:te-packet-link-bandwidth;
       }
     }
   }
   <CODE ENDS>

Appendix B.  Data Tree Example

   This section contains an example of an instance data tree in the JSON
   encoding [RFC7951].  The example instantiates "ietf-l3-te-topology"
   for the topology that is depicted in the following diagram.

                   +------------+                   +------------+
                   |     D1     |                   |     D2     |
                  /-\          /-\     (TE)        /-\          /-\
                  | | 1-0-1    | |---------------->| | 2-1-1    | |
                  | |    1-2-1 | |<----------------| |    2-0-1 | |
                  \-/  1-3-1   \-/     (TE)        \-/  2-3-1   \-/
                   |   /----\   |                   |   /----\   |
                   +---|    |---+                   +---|    |---+
                       \----/                           \----/
                        A  |                             A  |
                    (TE)|  |(TE)                 (Non-TE)|  |(Non-TE)
                        |  |                             |  |
                        |  |       +------------+        |  |
                        |  |       |     D3     |        |  |
                        |  |      /-\          /-\       |  |
                        |  +----->| | 3-1-1    | |-------+  |
                        +---------| |    3-2-1 | |<---------+
                                  \-/          \-/
                                   |            |
                                   +------------+

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   The corresponding instance data tree is depicted below.  Note that
   some lines have been wrapped to adhere to the 72-character line
   limitation of RFCs.

   {
     "ietf-network:networks": {
       "network": [
         {
           "network-id":"example-topo-te",
           "network-types": {
             "ietf-te-topology:te-topology": {
             }
           },
           "ietf-te-topology:te-topology-identifier": {
             "provider-id":200,
             "client-id":300,
             "topology-id":"example-topo-te"
           },
           "ietf-te-topology:te": {
           },
           "node": [
             {
               "node-id":"D1",
               "ietf-te-topology:te-node-id":"2.0.1.1",
               "ietf-te-topology:te": {
                 "te-node-attributes": {
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"1-2-1",
                   "ietf-te-topology:te-tp-id":10201,
                   "ietf-te-topology:te": {
                     "interface-switching-capability": [
                       {
                         "switching-capability":
                           "ietf-te-types:switching-psc1",
                         "encoding":
                           "ietf-te-types:lsp-encoding-ethernet"
                       }
                     ]
                   }
                 },
                 {
                   "tp-id": "1-3-1",
                   "ietf-te-topology:te-tp-id":10301,
                   "ietf-te-topology:te": {
                     "interface-switching-capability": [

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                       {
                         "switching-capability":
                           "ietf-te-types:switching-psc1",
                         "encoding":
                           "ietf-te-types:lsp-encoding-ethernet"
                       }
                     ]
                   }
                 }
               ]
             },
             {
               "node-id":"D2",
               "ietf-te-topology:te-node-id":"2.0.2.1",
               "ietf-te-topology:te": {
                 "te-node-attributes": {
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"2-1-1",
                   "ietf-te-topology:te-tp-id":20101,
                   "ietf-te-topology:te": {
                     "interface-switching-capability": [
                       {
                         "switching-capability":
                           "ietf-te-types:switching-psc1",
                         "encoding":
                           "ietf-te-types:lsp-encoding-ethernet"
                       }
                     ]
                   }
                 }
               ]
             },
             {
               "node-id":"D3",
               "ietf-te-topology:te-node-id":"2.0.3.1",
               "ietf-te-topology:te": {
                 "te-node-attributes": {
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"3-1-1",
                   "ietf-te-topology:te-tp-id":30101,
                   "ietf-te-topology:te": {
                     "interface-switching-capability": [

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                       {
                         "switching-capability":
                           "ietf-te-types:switching-psc1",
                         "encoding":
                           "ietf-te-types:lsp-encoding-ethernet"
                       }
                     ]
                   }
                 }
               ]
             }
           ],
           "ietf-network-topology:link": [
             {
               "link-id":"D1,1-2-1,D2,2-1-1",
               "source": {
                 "source-node":"D1",
                 "source-tp":"1-2-1"
               },
               "destination": {
                 "dest-node":"D2",
                 "dest-tp":"2-1-1"
               },
               "ietf-te-topology:te": {
                 "te-link-attributes": {
                   "interface-switching-capability": [
                     {
                       "switching-capability":
                         "ietf-te-types:switching-psc1",
                       "encoding":"ietf-te-types:lsp-encoding-ethernet"
                     }
                   ],
                   "max-link-bandwidth": {
                     "te-bandwidth": {
                       "generic":"0x1p+18"
                     }
                   },
                   "te-default-metric":100
                 }
               }
             },
             {
               "link-id":"D2,2-1-1,D1,1-2-1",
               "source": {
                 "source-node":"D2",
                 "source-tp":"2-1-1"
               },
               "destination": {

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                 "dest-node":"D1",
                 "dest-tp":"1-2-1"
               },
               "ietf-te-topology:te": {
                 "te-link-attributes": {
                   "interface-switching-capability": [
                     {
                       "switching-capability":
                         "ietf-te-types:switching-psc1",
                       "encoding":"ietf-te-types:lsp-encoding-ethernet"
                     }
                   ],
                   "max-link-bandwidth": {
                     "te-bandwidth": {
                       "generic":"0x1p+18"
                     }
                   },
                   "te-default-metric":100
                 }
               }
             },
             {
               "link-id":"D1,1-3-1,D3,3-1-1",
               "source": {
                 "source-node":"D1",
                 "source-tp":"1-3-1"
               },
               "destination": {
                 "dest-node":"D3",
                 "dest-tp":"3-1-1"
               },
               "ietf-te-topology:te": {
                 "te-link-attributes": {
                   "interface-switching-capability": [
                     {
                       "switching-capability":
                         "ietf-te-types:switching-psc1",
                       "encoding":"ietf-te-types:lsp-encoding-ethernet"
                     }
                   ],
                   "max-link-bandwidth": {
                     "te-bandwidth": {
                       "generic":"0x1p+18"
                     }
                   },
                   "te-default-metric":100
                 }
               }

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             },
             {
               "link-id":"D3,3-1-1,D1,1-3-1",
               "source": {
                 "source-node":"D3",
                 "source-tp":"3-1-1"
               },
               "destination": {
                 "dest-node":"D1",
                 "dest-tp":"1-3-1"
               },
               "ietf-te-topology:te": {
                 "te-link-attributes": {
                   "interface-switching-capability": [
                     {
                       "switching-capability":
                         "ietf-te-types:switching-psc1",
                       "encoding":"ietf-te-types:lsp-encoding-ethernet"
                     }
                   ],
                   "max-link-bandwidth": {
                     "te-bandwidth": {
                       "generic":"0x1p+18"
                     }
                   },
                   "te-default-metric":100
                 }
               }
             }
           ]
         },
         {
           "network-id":"example-topo-l3-te",
           "network-types": {
             "ietf-l3-unicast-topology:l3-unicast-topology": {
               "ietf-l3-te-topology:l3-te": {
               }
             }
           },
           "ietf-l3-unicast-topology:l3-topology-attributes": {
             "ietf-l3-te-topology:l3-te-topology-attributes": {
               "network-ref":"example-topo-te"
             }
           },
           "node": [
             {
               "node-id":"D1",
               "ietf-l3-unicast-topology:l3-node-attributes": {

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                 "router-id": [
                   "203.0.113.1"
                 ],
                 "prefix": [
                   {
                     "prefix":"203.0.113.1/32"
                   }
                 ],
                 "ietf-l3-te-topology:l3-te-node-attributes": {
                   "node-ref":"D1",
                   "network-ref":"example-topo-te"
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"1-0-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":101
                   }
                 },
                 {
                   "tp-id":"1-2-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":121,
                     "ietf-l3-te-topology:l3-te-tp-attributes": {
                       "network-ref":"example-topo-te",
                       "tp-ref":"1-2-1"
                     }
                   }
                 },
                 {
                   "tp-id":"1-3-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":131,
                     "ietf-l3-te-topology:l3-te-tp-attributes": {
                       "network-ref":"example-topo-te",
                       "tp-ref":"1-3-1"
                     }
                   }
                 }
               ]
             },
             {
               "node-id":"D2",
               "ietf-l3-unicast-topology:l3-node-attributes": {
                 "router-id": [
                   "203.0.113.2"
                 ],

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                 "prefix": [
                   {
                     "prefix":"203.0.113.2/32"
                   }
                 ],
                 "ietf-l3-te-topology:l3-te-node-attributes": {
                   "node-ref":"D2",
                   "network-ref":"example-topo-te"
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"2-0-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":201
                   }
                 },
                 {
                   "tp-id":"2-1-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":211,
                     "ietf-l3-te-topology:l3-te-tp-attributes": {
                       "tp-ref":"2-1-1",
                       "network-ref":"example-topo-te"
                     }
                   }
                 },
                 {
                   "tp-id":"2-3-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":231
                   }
                 }
               ]
             },
             {
               "node-id":"D3",
               "ietf-l3-unicast-topology:l3-node-attributes": {
                 "router-id": [
                   "203.0.113.3"
                 ],
                 "prefix": [
                   {
                     "prefix":"203.0.113.3/32"
                   }
                 ],
                 "ietf-l3-te-topology:l3-te-node-attributes": {
                   "node-ref":"D3",

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                   "network-ref":"example-topo-te"
                 }
               },
               "ietf-network-topology:termination-point": [
                 {
                   "tp-id":"3-0-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":301
                   }
                 },
                 {
                   "tp-id":"3-1-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":311,
                     "ietf-l3-te-topology:l3-te-tp-attributes": {
                       "tp-ref":"3-1-1",
                       "network-ref":"example-topo-te"
                     }
                   }
                 },
                 {
                   "tp-id":"3-2-1",
   "ietf-l3-unicast-topology:l3-termination-point-attributes": {
                     "unnumbered-id":321
                   }
                 }
               ]
             }
           ],
           "ietf-network-topology:link": [
             {
               "link-id":"D1,1-2-1,D2,2-1-1",
               "source": {
                 "source-node":"D1",
                 "source-tp":"1-2-1"
               },
               "destination": {
                 "dest-node":"D2",
                 "dest-tp":"2-1-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100",
                 "ietf-l3-te-topology:l3-te-link-attributes": {
                   "link-ref":"D1,1-2-1,D2,2-1-1",
                   "network-ref":"example-topo-te"
                 }
               }
             },

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             {
               "link-id":"D2,2-1-1,D1,1-2-1",
               "source": {
                 "source-node":"D2",
                 "source-tp":"2-1-1"
               },
               "destination": {
                 "dest-node":"D1",
                 "dest-tp":"1-2-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100",
                 "ietf-l3-te-topology:l3-te-link-attributes": {
                   "link-ref":"D2,2-1-1,D1,1-2-1",
                   "network-ref":"example-topo-te"
                 }
               }
             },
             {
               "link-id":"D1,1-3-1,D3,3-1-1",
               "source": {
                 "source-node":"D1",
                 "source-tp":"1-3-1"
               },
               "destination": {
                 "dest-node":"D3",
                 "dest-tp":"3-1-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100",
                 "ietf-l3-te-topology:l3-te-link-attributes": {
                   "link-ref":"D1,1-3-1,D3,3-1-1",
                   "network-ref":"example-topo-te"
                 }
               }
             },
             {
               "link-id":"D3,3-1-1,D1,1-3-1",
               "source": {
                 "source-node":"D3",
                 "source-tp":"3-1-1"
               },
               "destination": {
                 "dest-node":"D1",
                 "dest-tp":"1-3-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100",

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                 "ietf-l3-te-topology:l3-te-link-attributes": {
                   "link-ref":"D3,3-1-1,D1,1-3-1",
                   "network-ref":"example-topo-te"
                 }
               }
             },
             {
               "link-id":"D2,2-3-1,D3,3-2-1",
               "source": {
                 "source-node":"D2",
                 "source-tp":"2-3-1"
               },
               "destination": {
                 "dest-node":"D3",
                 "dest-tp":"3-2-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100"
               }
             },
             {
               "link-id":"D3,3-2-1,D2,2-3-1",
               "source": {
                 "source-node":"D3",
                 "source-tp":"3-2-1"
               },
               "destination": {
                 "dest-node":"D2",
                 "dest-tp":"2-3-1"
               },
               "ietf-l3-unicast-topology:l3-link-attributes": {
                 "metric1":"100"
               }
             }
           ]
         }
       ]
     }
   }

Authors' Addresses

   Xufeng Liu
   Alef Edge

   EMail: xufeng.liu.ietf@gmail.com

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   Igor Bryskin
   Individual

   EMail: i_bryskin@yahoo.com

   Vishnu Pavan Beeram
   Juniper Networks

   EMail: vbeeram@juniper.net

   Tarek Saad
   Cisco Systems Inc

   EMail: tsaad.net@gmail.com

   Himanshu Shah
   Ciena

   EMail: hshah@ciena.com

   Oscar Gonzalez de Dios
   Telefonica

   EMail: oscar.gonzalezdedios@telefonica.com

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