Network Working Group X. Liu
Internet-Draft Alef Edge
Intended status: Standards Track I. Bryskin
Expires: January 8, 2025 Individual
V. Beeram
Juniper Networks
T. Saad
Cisco Systems Inc
H. Shah
Ciena
O. Gonzalez de Dios
Telefonica
July 7, 2024
YANG Data Model for Layer 3 TE Topologies
draft-ietf-teas-yang-l3-te-topo-18
Abstract
This document defines a YANG data model for layer 3 traffic
engineering topologies.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on January 8, 2025.
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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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . 4
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 . . . . . . . . . . . 12
4.2.1. Network Types . . . . . . . . . . . . . . . . . . . . 12
4.2.2. Augmentation Groupings . . . . . . . . . . . . . . . 12
4.2.3. Node Connectivity Matrix Attributes . . . . . . . . . 15
4.2.4. Node Information Source . . . . . . . . . . . . . . . 16
4.2.5. Node Local Link Connectivity . . . . . . . . . . . . 16
4.2.6. Link Template for Performance Metrics . . . . . . . . 17
4.2.7. Link for Performance Metrics . . . . . . . . . . . . 17
4.2.8. Link Information Source for Performance Metrics . . . 18
4.2.9. Link Template for Packet-specific Attributes . . . . 18
4.2.10. Link for Packet-specific Attributes . . . . . . . . . 18
4.2.11. Link Information Source for Packet-specific
Attributes . . . . . . . . . . . . . . . . . . . . . 19
4.2.12. TE Bandwidth for Packet-specific Technologies . . . . 19
5. YANG Modules . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1. Layer 3 TE Topology Module . . . . . . . . . . . . . . . 22
5.2. Packet Switching TE Topology Module . . . . . . . . . . . 27
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 42
7. Security Considerations . . . . . . . . . . . . . . . . . . . 43
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.1. Normative References . . . . . . . . . . . . . . . . . . 46
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8.2. Informative References . . . . . . . . . . . . . . . . . 48
Appendix A. Companion YANG Model for Non-NMDA Compliant
Implementations . . . . . . . . . . . . . . . . . . 50
A.1. Layer 3 TE Topology State Module . . . . . . . . . . . . 50
A.2. Packet Switching TE Topology State Module . . . . . . . . 53
Appendix B. Data Tree Example . . . . . . . . . . . . . . . . . 67
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 78
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.
This document defines a data model to manage and control layer 3
topologies with the TE capability, without describing specific
technologies to achieve the TE capability. There are other related
YANG data models defined for specific technologies. For example, a
YANG data model for SR (Segment Routing) and SR TE topologies is
defined in [I-D.ietf-teas-yang-sr-te-topo]. A YANG data model for
MPLS-TE topology is defined in [I-D.ietf-teas-yang-te-mpls-topology].
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
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1.2. Tree Diagrams
Tree diagrams used in this document follow the notation defined in
[RFC8340].
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.
The module ietf-l3-te-topology defined in this document requires both
ietf-l3-unicast-topology defined in [RFC8346] and ietf-te-topology
defined in [RFC8795].
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
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The above network-ref is a YANG data node of type leafref, used to
indicate the network-id of the corresponding TE topology. The
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 specify 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
These performance metric parameters defined in this document are for
the purpose of traffic engineering. They can be used to make traffic
engineering decisions. The usage is different and compliment to
other performance monitoring machinimas such as the VPN service
performance monitoring defined in [RFC9375].
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
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4.2. Packet Switching TE Topology Module
This module consists of augmentations to the base TE topology model.
4.2.1. Network Types
This module augments the network types with a new network type for TE
packet topologies.
module: ietf-te-topology-packet
augment /nw:networks/nw:network/nw:network-types/tet:te-topology:
+--rw packet!
4.2.2. Augmentation Groupings
The two groupings described in this section specify the performance
measurement attributes specific to the packet switching topologies.
They are repeatedly used in the module ietf-te-topology-packet to
augment various parts of the base TE topology model, as shown in the
following sections.
4.2.2.1. Performance Metrics
The grouping performance-metrics-attributes-packet is used to specify
the performance metrics. This grouping is defined in the module
ietf-te-packet-types [I-D.ietf-teas-rfc8776-update].
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module: ietf-te-packet-types
grouping performance-metrics-attributes-packet:
+-- performance-metrics-one-way
| +-- one-way-delay? uint32
| +-- one-way-delay-normality?
| | te-types:performance-metrics-normality
| +-- one-way-residual-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-residual-bandwidth-normality?
| | te-types:performance-metrics-normality
| +-- one-way-available-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-available-bandwidth-normality?
| | te-types:performance-metrics-normality
| +-- one-way-utilized-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-utilized-bandwidth-normality?
| | te-types:performance-metrics-normality
| +-- one-way-min-delay? uint32
| +-- one-way-min-delay-normality?
| | te-types:performance-metrics-normality
| +-- one-way-max-delay? uint32
| +-- one-way-max-delay-normality?
| | te-types:performance-metrics-normality
| +-- one-way-delay-variation? uint32
| +-- one-way-delay-variation-normality?
| | te-types:performance-metrics-normality
| +-- one-way-packet-loss? decimal64
| +-- one-way-packet-loss-normality?
| te-types:performance-metrics-normality
+-- performance-metrics-two-way
+-- two-way-delay? uint32
+-- two-way-delay-normality?
| te-types:performance-metrics-normality
+-- two-way-min-delay? uint32
+-- two-way-min-delay-normality?
| te-types:performance-metrics-normality
+-- two-way-max-delay? uint32
+-- two-way-max-delay-normality?
| te-types:performance-metrics-normality
+-- two-way-delay-variation? uint32
+-- two-way-delay-variation-normality?
| te-types:performance-metrics-normality
+-- two-way-packet-loss? decimal64
+-- two-way-packet-loss-normality?
te-types:performance-metrics-normality
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4.2.2.2. Performance Metrics Throttle
The grouping performance-metrics-throttle-container-packet is used to
specify the throttling parameters. This grouping is defined in the
module ietf-te-packet-types [I-D.ietf-teas-rfc8776-update].
module: ietf-te-packet-types
grouping performance-metrics-throttle-container-packet:
+-- throttle
+-- one-way-delay-offset? uint32
+-- measure-interval? uint32
+-- advertisement-interval? uint32
+-- suppression-interval? uint32
+-- threshold-out
| +-- one-way-delay? uint32
| +-- one-way-residual-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-available-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-utilized-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- two-way-delay? uint32
| +-- one-way-min-delay? uint32
| +-- one-way-max-delay? uint32
| +-- one-way-delay-variation? uint32
| +-- one-way-packet-loss? decimal64
| +-- two-way-min-delay? uint32
| +-- two-way-max-delay? uint32
| +-- two-way-delay-variation? uint32
| +-- two-way-packet-loss? decimal64
+-- threshold-in
| +-- one-way-delay? uint32
| +-- one-way-residual-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-available-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- one-way-utilized-bandwidth?
| | rt-types:bandwidth-ieee-float32
| +-- two-way-delay? uint32
| +-- one-way-min-delay? uint32
| +-- one-way-max-delay? uint32
| +-- one-way-delay-variation? uint32
| +-- one-way-packet-loss? decimal64
| +-- two-way-min-delay? uint32
| +-- two-way-max-delay? uint32
| +-- two-way-delay-variation? uint32
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| +-- two-way-packet-loss? decimal64
+-- threshold-accelerated-advertisement
+-- one-way-delay? uint32
+-- one-way-residual-bandwidth?
| rt-types:bandwidth-ieee-float32
+-- one-way-available-bandwidth?
| rt-types:bandwidth-ieee-float32
+-- one-way-utilized-bandwidth?
| rt-types:bandwidth-ieee-float32
+-- two-way-delay? uint32
+-- one-way-min-delay? uint32
+-- one-way-max-delay? uint32
+-- one-way-delay-variation? uint32
+-- one-way-packet-loss? decimal64
+-- two-way-min-delay? uint32
+-- two-way-max-delay? uint32
+-- two-way-delay-variation? uint32
+-- two-way-packet-loss? decimal64
4.2.3. Node Connectivity Matrix Attributes
The node connectivity matrix attributes are augmented with
performance metrics and their throttling parameters when the network
type is packet.
The grouping performance-metrics-attributes-packet is used as "config
false" to specify operattional states.
The grouping performance-metrics-throttle-container-packet is kept as
"config true" to specify both configurtions and operattional states.
augment /nw:networks/nw:network/nw:node/tet:te
/tet:te-node-attributes/tet:connectivity-matrices:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
augment /nw:networks/nw:network/nw:node/tet:te
/tet:te-node-attributes/tet:connectivity-matrices
/tet:connectivity-matrix:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
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4.2.4. Node Information Source
The node information source constructs are augmented with states of
performance metrics and their throttling parameters when the network
type is packet.
As the attributes related to the information source are not
configurable, both grouping performance-metrics-attributes-packet and
performance-metrics-throttle-container-packet are used as "config
false" to specify operattional states.
augment /nw:networks/nw:network/nw:node/tet:te
/tet:information-source-entry/tet:connectivity-matrices:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
augment /nw:networks/nw:network/nw:node/tet:te
/tet:information-source-entry/tet:connectivity-matrices
/tet:connectivity-matrix:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
4.2.5. Node Local Link Connectivity
The node local link connectivity attributes are augmented with
performance metrics and their throttling parameters when the network
type is packet.
The grouping performance-metrics-attributes-packet is used as "config
false" to specify operattional states.
The grouping performance-metrics-throttle-container-packet is kept as
"config true" to specify both configurtions and operattional states.
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augment /nw:networks/nw:network/nw:node/tet:te
/tet:tunnel-termination-point
/tet:local-link-connectivities:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
augment /nw:networks/nw:network/nw:node/tet:te
/tet:tunnel-termination-point
/tet:local-link-connectivities
/tet:local-link-connectivity:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
4.2.6. Link Template for Performance Metrics
The link template attributes are augmented with performance metrics
and their throttling parameters when the network type is packet.
The grouping performance-metrics-attributes-packet is used as "config
false" to specify operattional states.
The grouping performance-metrics-throttle-container-packet is kept as
"config true" to specify both configurtions and operattional states.
augment /nw:networks/tet:te/tet:templates/tet:link-template
/tet:te-link-attributes:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
4.2.7. Link for Performance Metrics
The link attributes are augmented with performance metrics and their
throttling parameters when the network type is packet.
The grouping performance-metrics-attributes-packet is used as "config
false" to specify operattional states.
The grouping performance-metrics-throttle-container-packet is kept as
"config true" to specify both configurtions and operattional states.
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augment /nw:networks/nw:network/nt:link/tet:te
/tet:te-link-attributes:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
4.2.8. Link Information Source for Performance Metrics
The link information source constructs are augmented with states of
performance metrics and their throttling parameters when the network
type is packet.
As the attributes related to the information source are not
configurable, both grouping performance-metrics-attributes-packet and
performance-metrics-throttle-container-packet are used as "config
false" to specify operattional states.
augment /nw:networks/nw:network/nt:link/tet:te
/tet:information-source-entry:
+---u te-packet-types:performance-metrics-attributes-packet
| {te-performance-metric}?
+---u te-packet-types:performance-metrics-throttle-container-packet
{te-performance-metric}?
4.2.9. Link Template for Packet-specific Attributes
The link template attributes are augmented with configurations and
states of 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
4.2.10. Link for Packet-specific Attributes
The link attributes are augmented with configuration and states of
packet-specific attributes when the network type is packet.
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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
4.2.11. Link Information Source for Packet-specific Attributes
The link information source constructs are augmented with states of
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
4.2.12. 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
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/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
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
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/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
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
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+--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
/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@2024-06-08.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";
}
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import ietf-te-topology {
prefix "tet";
reference
"RFC 8795: YANG Data Model for Traffic Engineering (TE)
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 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
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(https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
for full legal notices.";
revision 2024-06-08 {
description
"Initial revision";
reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
}
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;
}
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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;
}
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" {
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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
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>
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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@2024-06-08.yang"
module ietf-te-topology-packet {
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
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"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
"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.";
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revision 2024-06-08 {
description
"Initial revision";
reference
"RFC XXXX: YANG Data Model for Layer 3 TE Topologies";
}
/*
* 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
*/
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/* 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
"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.";
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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: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 {
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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/"
+ "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;
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}
}
uses
te-packet-types:performance-metrics-throttle-container-packet {
if-feature te-performance-metric;
}
}
/* Augmentations to te-link-attributes */
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;
}
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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: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')" {
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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/"
+ "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/"
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+ "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;
}
}
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;
}
}
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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" {
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 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
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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/"
+ "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" {
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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;
}
}
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/"
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+ "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";
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 {
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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
"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/"
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+ "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/"
+ "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.
--------------------------------------------------------------------
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--------------------------------------------------------------------
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]:
--------------------------------------------------------------------
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
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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
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.
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/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.
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.
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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>.
[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>.
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[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>.
[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>.
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[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-11 (work in progress), May 2024,
<https://datatracker.ietf.org/doc/html/draft-ietf-teas-
rfc8776-update-11>.
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>.
[RFC9375] Wu, B., Ed., Wu, Q., Ed., Boucadair, M., Ed., Gonzalez de
Dios, O., and B. Wen, "A YANG Data Model for Network and
VPN Service Performance Monitoring", RFC 9375,
DOI 10.17487/RFC9375, April 2023,
<https://www.rfc-editor.org/info/rfc9375>.
[I-D.ietf-teas-yang-sr-te-topo]
Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and
S. Litkowski, "YANG Data Model for SR and SR TE Topologies
on MPLS Data Plane", draft-ietf-teas-yang-sr-te-topo-18
(work in progress), October 2023,
<https://datatracker.ietf.org/doc/html/draft-ietf-teas-
yang-sr-te-topo-18>.
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[I-D.ietf-teas-yang-te-mpls-topology]
Busi, I., Guo, A., Liu, X., Saad, T., and R. Gandhi, "A
YANG Data Model for MPLS-TE Topology", draft-ietf-teas-
yang-te-mpls-topology-00 (work in progress), March 2024,
<https://datatracker.ietf.org/doc/html/draft-ietf-teas-
yang-te-mpls-topology-00>.
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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@2024-06-08.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 2024-06-08 {
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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@2024-06-08.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 2024-06-08 {
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" {
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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 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;
}
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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: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";
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}
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/"
+ "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/"
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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 TE node
connectivity matrices.";
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;
}
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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/"
+ "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 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.";
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}
description
"Augment TE bandwidth path constraints for the TTP
Local Link Connectivities.";
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: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/"
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+ "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";
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;
}
}
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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
"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
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"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/"
+ "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;
}
}
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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.";
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.
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+------------+ +------------+
| 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 | |<---------+
\-/ \-/
| |
+------------+
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": {
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}
},
"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": [
{
"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":
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"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": [
{
"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": [
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{
"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": {
"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"
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},
"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
}
}
},
{
"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
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}
}
}
]
},
{
"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": {
"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",
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"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"
],
"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"
}
}
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},
{
"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",
"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
}
}
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]
}
],
"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"
}
}
},
{
"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",
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"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",
"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"
},
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"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
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
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Oscar Gonzalez de Dios
Telefonica
EMail: oscar.gonzalezdedios@telefonica.com
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