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ietf-te.yang
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module ietf-te {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-te";
/* Replace with IANA when assigned */
prefix te;
/* Import TE generic types */
import ietf-te-types {
prefix te-types;
reference
"draft-ietf-teas-rfc8776-update: Common YANG Data Types
for Traffic Engineering.";
}
import ietf-yang-types {
prefix yang;
reference
"RFC6991: Common YANG Data Types.";
}
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";
}
organization
"IETF Traffic Engineering Architecture and Signaling (TEAS)
Working Group.";
contact
"WG Web: <https://tools.ietf.org/wg/teas/>
WG List: <mailto:teas@ietf.org>
Editor: Tarek Saad
<mailto:tsaad.net@gmail.com>
Editor: Rakesh Gandhi
<mailto:rgandhi@cisco.com>
Editor: Vishnu Pavan Beeram
<mailto:vbeeram@juniper.net>
Editor: Himanshu Shah
<mailto:hshah@ciena.com>
Editor: Xufeng Liu
<mailto: xufeng.liu.ietf@gmail.com>
Editor: Igor Bryskin
<mailto:i_bryskin@yahoo.com>
Editor: Oscar Gonzalez de Dios
<mailto: oscar.gonzalezdedios@telefonica.com>";
description
"YANG data module for TE configuration, state, and RPCs.
The model fully conforms to the Network Management
Datastore Architecture (NMDA).
Copyright (c) 2023 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.";
// RFC Ed.: replace XXXX with actual RFC number and remove this
// note.
// RFC Ed.: update the date below with the date of RFC publication
// and remove this note.
revision 2024-02-02 {
description
"Initial revision for the TE generic YANG module.";
reference
"RFCXXXX: A YANG Data Model for Traffic Engineering Tunnels
and Interfaces.";
}
typedef tunnel-ref {
type leafref {
path "/te:te/te:tunnels/te:tunnel/te:name";
require-instance false;
}
description
"This type is used by data models that need to reference
configured TE tunnel.";
}
/**
* TE tunnel generic groupings
*/
grouping path-common-properties {
description
"Common path attributes.";
leaf name {
type string;
description
"TE path name.";
}
leaf path-computation-method {
type identityref {
base te-types:path-computation-method;
}
default "te-types:path-locally-computed";
description
"The method used for computing the path, either
locally computed, queried from a server or not
computed at all (explicitly configured).";
}
container path-computation-server {
when "derived-from-or-self(../path-computation-method, "
+ "'te-types:path-externally-queried')" {
description
"The path-computation server when the path is
externally queried.";
}
uses te-types:te-generic-node-id;
description
"Address of the external path computation
server.";
}
leaf compute-only {
type empty;
description
"When present, the path is computed and updated whenever
the topology is updated. No resources are committed
or reserved in the network.";
}
leaf use-path-computation {
when "derived-from-or-self(../path-computation-method, "
+ "'te-types:path-locally-computed')";
type boolean;
default "true";
description
"When 'true' indicates the path is dynamically computed
and/or validated against the Traffic-Engineering Database
(TED), and when 'false' indicates no path expansion or
validation against the TED is required.";
}
leaf lockdown {
type empty;
description
"When present, indicates no reoptimization to be attempted
for this path.";
}
leaf path-scope {
type identityref {
base te-types:path-scope-type;
}
default "te-types:path-scope-end-to-end";
config false;
description
"Indicates whether the path is a segment or portion of
of the full path., or is the an end-to-end path for
the TE Tunnel.";
}
}
/* This grouping is re-used in path-computation rpc */
grouping path-compute-info {
description
"Attributes used for path computation request.";
uses tunnel-associations-properties;
uses te-types:generic-path-optimization;
leaf named-path-constraint {
if-feature "te-types:named-path-constraints";
type leafref {
path "/te:te/te:globals/te:named-path-constraints/"
+ "te:named-path-constraint/te:name";
}
description
"Reference to a globally defined named path constraint set.";
}
uses path-constraints-common;
}
/* This grouping is re-used in path-computation rpc */
grouping path-forward-properties {
description
"The path preference.";
leaf preference {
type uint8 {
range "1..255";
}
default "1";
description
"Specifies a preference for this path. The lower the number
higher the preference.";
}
leaf co-routed {
when "/te:te/te:tunnels/te:tunnel/te:bidirectional = 'true'" {
description
"Applicable to bidirectional tunnels only.";
}
type boolean;
default "false";
description
"Indicates whether the reverse path must to be co-routed
with the primary.";
}
}
/* This grouping is re-used in path-computation rpc */
grouping k-requested-paths {
description
"The k-shortest paths requests.";
leaf k-requested-paths {
type uint8;
default "1";
description
"The number of k-shortest-paths requested from the path
computation server and returned sorted by its optimization
objective.";
}
}
grouping path-state {
description
"TE per path state parameters.";
uses path-computation-response;
container lsp-provisioning-error-infos {
config false;
description
"LSP provisioning error information.";
list lsp-provisioning-error-info {
description
"List of LSP provisioning error info entries.";
leaf error-reason {
type identityref {
base te-types:lsp-provisioning-error-reason;
}
description
"LSP provision error type.";
}
leaf error-description {
type string;
description
"The textual representation of the error occurred during
path computation.";
}
leaf error-timestamp {
type yang:date-and-time;
description
"Timestamp of when the reported error occurred.";
}
leaf error-node-id {
type te-types:te-node-id;
description
"Node identifier of node where error occurred.";
}
leaf error-link-id {
type te-types:te-tp-id;
description
"Link ID where the error occurred.";
}
leaf lsp-id {
type uint16;
description
"The LSP-ID for which path computation was performed.";
}
}
}
container lsps {
config false;
description
"The TE LSPs container.";
list lsp {
key "node lsp-id";
description
"List of LSPs associated with the tunnel.";
leaf tunnel-name {
type leafref {
path "/te:te/te:lsps/te:lsp/te:tunnel-name";
}
description "TE tunnel name.";
}
leaf node {
type leafref {
path "/te:te/te:lsps/te:lsp[tunnel-name="
+ "current()/../te:tunnel-name][lsp-id="
+ "current()/../te:lsp-id]/te:node";
}
description "The node where the LSP state resides on.";
}
leaf lsp-id {
type leafref {
path "/te:te/te:lsps/te:lsp[tunnel-name="
+ "current()/../tunnel-name]/te:lsp-id";
}
description "The TE LSP identifier.";
}
}
}
}
/* This grouping is re-used in path-computation rpc */
grouping path-computation-response {
description
"Attributes reported by path computation response.";
container computed-paths-properties {
config false;
description
"Computed path properties container.";
list computed-path-properties {
key "k-index";
description
"List of computed paths.";
leaf k-index {
type uint8;
description
"The k-th path returned from the computation server.
A lower k value path is more optimal than higher k
value path(s)";
}
uses te-types:generic-path-properties {
augment "path-properties" {
description
"additional path properties returned by path
computation.";
uses te-types:te-bandwidth;
leaf disjointness-type {
type te-types:te-path-disjointness;
config false;
description
"The type of resource disjointness.
When reported for a primary path, it represents the
minimum level of disjointness of all the secondary
paths. When reported for a secondary path, it
represents the disjointness of the secondary path.";
}
}
}
}
}
container computed-path-error-infos {
config false;
description
"Path computation information container.";
list computed-path-error-info {
description
"List of path computation info entries.";
leaf error-description {
type string;
description
"Textual representation of the error that occurred
during path computation.";
}
leaf error-timestamp {
type yang:date-and-time;
description
"Timestamp of last path computation attempt.";
}
leaf error-reason {
type identityref {
base te-types:path-computation-error-reason;
}
description
"Reason for the path computation error.";
}
}
}
}
grouping protection-restoration-properties {
description
"Protection and restoration parameters.";
container protection {
description
"Protection parameters.";
leaf protection-type {
type identityref {
base te-types:lsp-protection-type;
}
default "te-types:lsp-protection-unprotected";
description
"LSP protection type.";
}
leaf protection-reversion-disable {
type boolean;
default "false";
description
"Disable protection reversion to working path.";
}
leaf hold-off-time {
type uint32;
units "milli-seconds";
description
"The time between the declaration of an SF or SD condition
and the initialization of the protection switching
algorithm.";
reference
"RFC4427";
}
leaf wait-to-revert {
type uint16;
units "seconds";
description
"Time to wait before attempting LSP reversion.";
reference
"RFC4427";
}
leaf aps-signal-id {
type uint8 {
range "1..255";
}
default "1";
description
"The APS signal number used to reference the traffic of
this tunnel. The default value for normal traffic is 1.
The default value for extra-traffic is 255. If not
specified, non-default values can be assigned by the
server, if and only if, the server controls both
endpoints.";
reference
"ITU_G.808.1";
}
}
container restoration {
description
"Restoration parameters.";
leaf restoration-type {
type identityref {
base te-types:lsp-restoration-type;
}
description
"LSP restoration type.";
}
leaf restoration-scheme {
type identityref {
base te-types:restoration-scheme-type;
}
description
"LSP restoration scheme.";
}
leaf restoration-reversion-disable {
type boolean;
default "false";
description
"Disable restoration reversion to working path.";
}
leaf hold-off-time {
type uint32;
units "milli-seconds";
description
"The time between the declaration of an SF or SD condition
and the initialization of the protection switching
algorithm.";
reference
"RFC4427";
}
leaf wait-to-restore {
type uint16;
units "seconds";
description
"Time to wait before attempting LSP restoration.";
reference
"RFC4427";
}
leaf wait-to-revert {
type uint16;
units "seconds";
description
"Time to wait before attempting LSP reversion.";
reference
"RFC4427";
}
}
}
grouping tunnel-associations-properties {
description
"TE tunnel association grouping.";
container association-objects {
description
"TE tunnel associations.";
list association-object {
key "association-key";
unique "type id source/id source/type";
description
"List of association base objects.";
reference
"RFC4872";
leaf association-key {
type string;
description
"Association key used to identify a specific
association in the list";
}
leaf type {
type identityref {
base te-types:association-type;
}
description
"Association type.";
reference
"RFC4872";
}
leaf id {
type uint16;
description
"Association identifier.";
reference
"RFC4872";
}
container source {
uses te-types:te-generic-node-id;
description
"Association source.";
reference
"RFC4872";
}
}
list association-object-extended {
key "association-key";
unique
"type id source/id source/type global-source extended-id";
description
"List of extended association objects.";
reference
"RFC6780";
leaf association-key {
type string;
description
"Association key used to identify a specific
association in the list";
}
leaf type {
type identityref {
base te-types:association-type;
}
description
"Association type.";
reference
"RFC4872, RFC6780";
}
leaf id {
type uint16;
description
"Association identifier.";
reference
"RFC4872, RFC6780";
}
container source {
uses te-types:te-generic-node-id;
description
"Association source.";
reference
"RFC4872, RFC6780";
}
leaf global-source {
type uint32;
description
"Association global source.";
reference
"RFC6780";
}
leaf extended-id {
type yang:hex-string;
description
"Association extended identifier.";
reference
"RFC6780";
}
}
}
}
grouping tunnel-end-point {
description
"Common grouping used to specify the tunnel source and
destination end-points.";
leaf node-id {
type nw:node-id;
description
"The TE tunnel end-point node identifier";
}
leaf te-node-id {
type te-types:te-node-id;
description
"The TE tunnel end-point TE node identifier";
}
leaf tunnel-tp-id {
when "../node-id or ../te-node-id" {
description
"The TE tunnel termination point identifier is local to
a node";
}
type binary;
description
"The TE tunnel end-point TE tunnel termination point
identifier";
}
}
/* This grouping is re-used in path-computation rpc */
grouping tunnel-common-attributes {
description
"Common grouping to define the TE tunnel parameters";
container source {
description
"TE tunnel source end-point.";
uses tunnel-end-point;
}
container destination {
description
"TE tunnel destination end-point.";
uses tunnel-end-point;
}
leaf bidirectional {
type boolean;
default "false";
description
"Indicates a bidirectional tunnel";
}
}
/* This grouping is re-used in path-computation rpc */
grouping tunnel-hierarchy-properties {
description
"A grouping for TE tunnel hierarchy information.";
container hierarchy {
description
"Container for TE hierarchy related information.";
container dependency-tunnels {
description
"List of tunnels that this tunnel can be potentially
dependent on.";
list dependency-tunnel {
key "name";
description
"A tunnel entry that this tunnel can potentially depend
on.";
leaf name {
type tunnel-ref;
description
"Dependency tunnel name. The tunnel may not have been
instantiated yet.";
}
uses te-types:encoding-and-switching-type;
}
}
container hierarchical-link {
description
"Identifies a hierarchical link (in client layer)
that this tunnel is associated with. By default, the
topology of the hierarchical link is the same topology of
the tunnel;";
reference
"RFC4206";
leaf enable {
type boolean;
default "false";
description
"Enables the hierarchical link properties supported by
this tunnel";
}
leaf local-node-id {
type nw:node-id;
description
"The local node identifier.";
}
leaf local-te-node-id {
type te-types:te-node-id;
description
"The local TE node identifier.";
}
leaf local-link-tp-id {
type nt:tp-id;
description
"The local link termination point identifier.";
reference
"RFC8345";
}
leaf local-te-link-tp-id {
type te-types:te-tp-id;
description
"The local TE link termination point identifier.";
}
leaf remote-node-id {
type nw:node-id;
description
"The remote node identifier.";
}
leaf remote-link-tp-id {
type nt:tp-id;
description
"The remote link termination point identifier.";
reference
"RFC8345";
}
leaf remote-te-link-tp-id {
type te-types:te-tp-id;
description
"The remote TE link termination point identifier.";
}
leaf remote-te-node-id {
type te-types:te-node-id;
description
"Remote TE node identifier.";
}
leaf link-id {
type nt:link-id;
config false;
description
"A network topology assigned identifier to the link";
reference
"RFC8345";
}
leaf network-id {
type nw:network-id;
description
"The network topology identifier where the hierarchical
link supported by this TE tunnel is instantiated.";
}
uses te-types:te-topology-identifier {
description
"The TE topology identifier where the hierarchical link
supported by this TE tunnel is instantiated.";
}
}
}
}
grouping path-constraints-common {
description
"Global named path constraints configuration
grouping.";
uses te-types:common-path-constraints-attributes;
uses te-types:generic-path-disjointness;
uses te-types:path-constraints-route-objects;
container path-in-segment {
presence "The end-to-end tunnel starts in a previous domain;
this tunnel is a segment in the current domain.";
description
"If an end-to-end tunnel crosses multiple domains using
the same technology, some additional constraints have to be
taken in consideration in each domain.
This TE tunnel segment is stitched to the upstream TE tunnel
segment.";
uses te-types:label-set-info;
}
container path-out-segment {
presence
"The end-to-end tunnel is not terminated in this domain;
this tunnel is a segment in the current domain.";
description
"If an end-to-end tunnel crosses multiple domains using
the same technology, some additional constraints have to be
taken in consideration in each domain.
This TE tunnel segment is stitched to the downstream TE
tunnel segment.";
uses te-types:label-set-info;
}
}
/**
* TE container
*/
container te {
description
"TE global container.";
leaf enable {
type boolean;
description
"Enables the TE component features.";
}
/* TE Global Data */
container globals {
description
"Globals TE system-wide configuration data container.";
container named-admin-groups {
description
"TE named admin groups container.";
list named-admin-group {
if-feature "te-types:extended-admin-groups";
if-feature "te-types:named-extended-admin-groups";
key "name";
description
"List of named TE admin-groups.";
leaf name {
type string;
description
"A string name that uniquely identifies a TE
interface named admin-group.";
}
leaf bit-position {
type uint32;
description
"Bit position representing the administrative group.";
reference
"RFC3209 and RFC7308";
}
}
}
container named-srlgs {
description
"TE named SRLGs container.";
list named-srlg {
if-feature "te-types:named-srlg-groups";
key "name";
description
"A list of named SRLG groups.";
leaf name {
type string;
description
"A string name that uniquely identifies a TE
interface named SRLG.";
}
leaf value {
type te-types:srlg;
description
"An SRLG value.";
}
leaf cost {
type uint32;
description
"SRLG associated cost. Used during path to append
the path cost when traversing a link with this SRLG.";
}
}
}
container named-path-constraints {
description
"TE named path constraints container.";
list named-path-constraint {
if-feature "te-types:named-path-constraints";
key "name";
leaf name {
type string;
description
"A string name that uniquely identifies a
path constraint set.";
}
uses path-constraints-common;
description
"A list of named path constraints.";
}
}
}
/* TE Tunnel Data */
container tunnels {
description
"Tunnels TE configuration data container.";
list tunnel {
key "name";
description
"The list of TE tunnels.";
leaf name {
type string;
description
"TE tunnel name.";
}
leaf alias {
type string;
description
"An alternate name of the TE tunnel that can be modified
anytime during its lifetime.";
}
leaf identifier {
type uint32;
description
"TE tunnel Identifier.";
reference
"RFC3209";
}
leaf color {
type uint32;
description "The color associated with the TE tunnel.";
reference "RFC9012";
}
leaf description {
type string;
default "None";
description
"Textual description for this TE tunnel.";
}
leaf admin-state {
type identityref {
base te-types:tunnel-admin-state-type;
}
default "te-types:tunnel-admin-state-up";
description
"TE tunnel administrative state.";
}
leaf operational-state {
type identityref {
base te-types:tunnel-state-type;
}
config false;
description
"TE tunnel operational state.";
}
uses te-types:encoding-and-switching-type;
uses tunnel-common-attributes;
container controller {
description
"Contains tunnel data relevant to external controller(s).
This target node may be augmented by external module(s),
for example, to add data for PCEP initiated and/or
delegated tunnels.";
leaf protocol-origin {
type identityref {
base te-types:protocol-origin-type;
}
description
"The protocol origin for instantiating the tunnel.";
}
leaf controller-entity-id {
type string;
description
"An identifier unique within the scope of visibility
that associated with the entity that controls the
tunnel.";
reference "RFC8232";
}
}
leaf reoptimize-timer {
type uint16;
units "seconds";
description
"Frequency of reoptimization of a traffic engineered
LSP.";
}
uses tunnel-associations-properties;
uses protection-restoration-properties;
uses te-types:tunnel-constraints;
uses tunnel-hierarchy-properties;
container primary-paths {
description
"The set of primary paths.";
reference "RFC4872";
list primary-path {
key "name";
description
"List of primary paths for this tunnel.";
leaf active {
type boolean;
config false;
description
"Indicates an active path that
has been selected from the primary paths list.";
}
uses path-common-properties;
uses path-forward-properties;
uses k-requested-paths;
uses path-compute-info;
uses path-state;
container primary-reverse-path {
when "../../../te:bidirectional = 'true'";
description
"The reverse primary path properties.";
uses path-common-properties;
uses path-compute-info;
uses path-state;
container candidate-secondary-reverse-paths {
description
"The set of referenced candidate reverse secondary
paths from the full set of secondary reverse paths
which may be used for this primary path.";
list candidate-secondary-reverse-path {
key "secondary-reverse-path";
ordered-by user;
description
"List of candidate secondary reverse path(s)";
leaf secondary-reverse-path {
type leafref {
path "../../../../../../"
+ "te:secondary-reverse-paths/"
+ "te:secondary-reverse-path/te:name";
}
description
"A reference to the secondary reverse path that
may be utilized when the containing primary
reverse path is in use.";
}
leaf active {
type boolean;
config false;
description
"Indicates an active path that has been