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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-yang-te-types: A YANG Data Model for
Common Traffic Engineering Types";
}
import ietf-inet-types {
prefix inet;
reference "RFC6991: Common YANG Data Types";
}
import ietf-yang-types {
prefix "yang";
reference "RFC6991: Common YANG Data Types";
}
organization
"IETF Traffic Engineering Architecture and Signaling (TEAS)
Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/teas/>
WG List: <mailto:[email protected]>
Editor: Tarek Saad
<mailto:[email protected]>
Editor: Rakesh Gandhi
<mailto:[email protected]>
Editor: Vishnu Pavan Beeram
<mailto:[email protected]>
Editor: Himanshu Shah
<mailto:[email protected]>
Editor: Xufeng Liu
<mailto: [email protected]>
Editor: Igor Bryskin
<mailto:[email protected]>";
description
"YANG data module for TE configuration, state, and RPCs.
The model fully conforms to the Network Management
Datastore Architecture (NMDA).
Copyright (c) 2019 IETF Trust and the persons
identified as authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; 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 "2020-01-17" {
description "Latest update to TE generic YANG module.";
reference
"RFCXXXX: A YANG Data Model for Traffic Engineering Tunnels
and Interfaces";
}
identity path-computation-error-reason {
description
"Base identity for path computation error reasons";
}
identity path-computation-error-no-topology {
base path-computation-error-reason;
description
"Path computation has failed because there is no topology
with the provided the topology-identifier";
}
identity path-computation-error-no-server {
base path-computation-error-reason;
description
"Path computation have failed because path computation
server is unavailable";
reference
"RFC5440";
}
/* Open issue: to be discussed */
identity path-computation-error-no-dependent-server {
base path-computation-error-reason;
description
"Path computation have failed because one or more dependent
path computation servers are unavailable.
The dependent path computation server could be
a BRPC downstream PCE or a child PCE.";
reference
"RFC5441, RFC 8685";
}
identity path-computation-error-no-source {
base path-computation-error-reason;
description
"Path computation has failed because there is no source TTP";
reference
"RFC5440";
}
identity path-computation-error-no-destination {
base path-computation-error-reason;
description
"Path computation has failed because there is no
destination TTP";
reference
"RFC5440";
}
identity path-computation-error-no-inclusion-hop {
base path-computation-error-reason;
description
"Path computation has failed because there is no
node or LTP provided by one or more inclusion hop";
}
/* Open Issue: to be discussed */
identity path-computation-error-hop-granularity-not-supported {
base path-computation-error-reason;
description
"Path computation has failed because the specified hop
granularity (node, link or label) is not supported";
reference
"RFC-ietf-pce-gmpls-pcep-extensions-16";
}
identity path-computation-error-path-not-found {
base path-computation-error-reason;
description
"Path computation no path found error reason";
reference
"RFC5440";
}
typedef tunnel-ref {
type leafref {
path "/te:te/te:tunnels/te:tunnel/te:name";
}
description
"This type is used by data models that need to reference
configured TE tunnel.";
}
typedef path-ref {
type union {
type leafref {
path "/te:te/te:tunnels/te:tunnel/" +
"te:p2p-primary-paths/te:p2p-primary-path/te:name";
}
type leafref {
path "/te:te/te:tunnels/te:tunnel/" +
"te:p2p-secondary-paths/te:p2p-secondary-path/te:name";
}
}
description
"This type is used by data models that need to reference
configured primary or secondary path of a TE tunnel.";
}
/**
* TE tunnel generic groupings
*/
grouping p2p-secondary-path-properties {
description "tunnel path properties.";
uses p2p-path-properties;
uses path-constraints-common;
uses protection-restoration-properties;
uses p2p-path-properties-state;
}
grouping p2p-primary-path-properties {
description
"TE tunnel primary path properties grouping";
uses p2p-path-properties;
uses path-constraints-common;
uses p2p-path-properties-state;
}
grouping path-properties {
description "TE computed path properties grouping";
container path-properties {
description "The TE path computed properties";
list path-metric {
key metric-type;
description "TE path metric type";
leaf metric-type {
type identityref {
base te-types:path-metric-type;
}
description "TE path metric type";
}
leaf accumulative-value {
type uint64;
description "TE path metric accumulative value";
}
}
uses te-types:generic-path-affinities;
uses te-types:generic-path-srlgs;
container path-route-objects {
config 'false';
description
"Container for the list of computed route objects
as returned by the computation engine";
list path-route-object {
key index;
ordered-by user;
description
"List of computed route objects returned by the
computation engine";
leaf index {
type uint32;
description
"Route object entry index. The index is used to
identify an entry in the list. The order of entries
is defined by the user without relying on key values";
}
uses te-types:explicit-route-hop;
}
}
uses shared-resources-tunnels;
}
}
grouping p2p-path-properties-state {
description "TE per path state parameters";
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 path-properties {
description "The TE path computed properties";
}
}
}
uses computed-path-error-info;
uses lsp-provisioning-error-info {
augment "lsp-provisioning-error-infos/" +
"lsp-provisioning-error-info" {
description
"Augmentation of LSP provisioning information under a
specific path";
leaf lsp-id {
type uint16;
description
"The LSP-ID for which path compatutation was performed.";
}
}
}
container lsps {
config 'false';
description "TE LSPs container";
list lsp {
key "lsp-id";
description "List of LSPs associated with the tunnel.";
uses lsp-provisioning-error-info;
uses lsp-properties-state;
uses shared-resources-tunnels-state;
uses lsp-record-route-information-state;
uses path-properties {
description "The TE path actual properties";
}
}
}
}
grouping computed-path-error-info {
description
"Grouping for path computation error information";
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 occurred during
path compuation.";
}
leaf error-timestamp {
type yang:date-and-time;
description
"Timestamp of last path computation attempt.";
}
leaf error-reason {
type identityref {
base path-computation-error-reason;
}
description
"Reason for the path computation error.";
}
}
}
}
grouping lsp-provisioning-error-info {
description
"Grouping for LSP provisioning error information";
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-description {
type string;
description
"Textual representation of the error occurred during
path compuation.";
}
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;
default "0.0.0.0";
description
"Node identifier of node where error occurred.";
}
leaf error-link-id {
type te-types:te-tp-id;
default 0;
description
"Link ID where the error occurred.";
}
}
}
}
grouping p2p-path-properties-common {
description
"TE tunnel common path properties configuration grouping";
leaf name {
type string;
description "TE path name";
}
leaf path-setup-protocol {
type identityref {
base te-types:path-signaling-type;
}
default te-types:path-setup-static;
description
"Signaling protocol used to set up this tunnel";
}
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).";
}
leaf path-computation-server {
when "../path-computation-method = "+
"'te-types:path-externally-queried'" {
description
"The path-computation server when the path is
externally queried";
}
type inet:ip-address;
description
"Address of the external path computation
server";
}
leaf compute-only {
type empty;
description
"When set, 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 "../path-computation-method =" +
" 'te-types:path-locally-computed'";
type boolean;
default 'true';
description "A CSPF dynamically computed path";
}
leaf lockdown {
type empty;
description
"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 "Path scope if segment or an end-to-end path";
}
}
grouping p2p-reverse-path-properties {
description
"TE tunnel reverse path properties configuration
grouping";
uses p2p-path-properties-common;
uses te-types:generic-path-optimization;
leaf named-path-constraint {
if-feature te-types:named-path-constraints;
type leafref {
path "../../../../../../globals/"
+ "named-path-constraints/named-path-constraint/"
+ "name";
}
description
"Reference to a globally defined named path
constraint set";
}
}
grouping p2p-primary-reverse-path-properties {
description "TE P2P tunnel primary reverse path properties.";
reference "RFC7551";
container p2p-primary-reverse-path {
description "Tunnel reverse primary path properties";
uses p2p-reverse-path-properties;
uses path-constraints-common;
uses p2p-path-properties-state;
container p2p-secondary-reverse-path {
description "Tunnel reverse secondary path properties";
uses p2p-secondary-reverse-path-properties;
}
}
}
grouping p2p-path-properties {
description
"TE tunnel path properties configuration grouping";
uses p2p-path-properties-common;
uses te-types:generic-path-optimization;
leaf preference {
type uint8 {
range "1..255";
}
default 1;
description
"Specifies a preference for this path. The lower the
number higher the preference";
}
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";
}
leaf named-path-constraint {
if-feature te-types:named-path-constraints;
type leafref {
path "../../../../../globals/"
+ "named-path-constraints/named-path-constraint/"
+ "name";
}
description
"Reference to a globally defined named path
constraint set";
}
}
grouping hierarchical-link-properties {
description
"Hierarchical link grouping";
reference "RFC4206";
container hierarchical-link {
description
"Identifies a hierarchical link (in client layer)
that this tunnel is associated with.";
leaf local-te-node-id {
type te-types:te-node-id;
default "0.0.0.0";
description
"Local TE node identifier";
}
leaf local-te-link-tp-id {
type te-types:te-tp-id;
default 0;
description
"Local TE link termination point identifier";
}
leaf remote-te-node-id {
type te-types:te-node-id;
default "0.0.0.0";
description
"Remote TE node identifier";
}
uses te-types:te-topology-identifier;
}
}
grouping protection-restoration-properties-state {
description
"Protection parameters grouping";
leaf lockout-of-normal {
type boolean;
default 'false';
description
"
When set to 'True', it represents a lockout of normal
traffic external command. When set to 'False', it
represents a clear lockout of normal traffic external
command. The lockout of normal traffic command applies
to this Tunnel.
";
reference "RFC4427";
}
leaf freeze {
type boolean;
default 'false';
description
"
When set to 'True', it represents a freeze external
command. When set to 'False', it represents a clear
freeze external command. The freeze command command
applies to all the Tunnels which are sharing the
protection resources with this Tunnel.
";
reference "RFC4427";
}
leaf lsp-protection-role {
type enumeration {
enum working {
description
"A working LSP must be a primary LSP whilst a protecting
LSP can be either a primary or a secondary LSP. Also,
known as protected LSPs when working LSPs are associated
with protecting LSPs.";
}
enum protecting {
description
"A secondary LSP is an LSP that has been provisioned
in the control plane only; e.g. resource allocation
has not been committed at the data plane";
}
}
default working;
description "LSP role type";
reference "RFC4872, section 4.2.1";
}
leaf lsp-protection-state {
type identityref {
base te-types:lsp-protection-state;
}
default te-types:normal;
description
"The state of the APS state machine controlling which
tunnels is using the resources of the protecting LSP.";
}
leaf protection-group-ingress-node-id {
type te-types:te-node-id;
default "0.0.0.0";
description
"Indicates the te-node-id of the protection group
ingress node when the APS state represents an extenal
command (LoP, SF, MS) applied to it or a WTR timer
running on it. If the external command is not applied to
the ingress node or the WTR timer is not running on it,
this attribute is not specified. A value 0.0.0.0 is used
when the te-node-id of the protection group ingress node is
unknown (e.g., because the ingress node is outside the scope
of control of the server)";
}
leaf protection-group-egress-node-id {
type te-types:te-node-id;
default "0.0.0.0";
description
"Indicates the te-node-id of the protection group egress node
when the APS state represents an extenal command (LoP, SF,
MS) applied to it or a WTR timer running on it. If the
external command is not applied to the ingress node or
the WTR timer is not running on it, this attribute is not
specified. A value 0.0.0.0 is used when the te-node-id of
the protection group ingress node is unknown (e.g., because
the ingress node is outside the scope of control of the
server)";
}
}
grouping protection-restoration-properties {
description "Protection and restoration parameters";
container protection {
description "Protection parameters";
leaf enable {
type boolean;
default 'false';
description
"A flag to specify if LSP protection is enabled";
reference "RFC4427";
}
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";
default 0;
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 "RFC4427";
}
}
container restoration {
description "Restoration parameters";
leaf enable {
type boolean;
default 'false';
description
"A flag to specify if LSP restoration is enabled";
reference "RFC4427";
}
leaf restoration-type {
type identityref {
base te-types:lsp-restoration-type;
}
default te-types:lsp-restoration-restore-any;
description "LSP restoration type.";
}
leaf restoration-scheme {
type identityref {
base te-types:restoration-scheme-type;
}
default te-types:restoration-scheme-preconfigured;
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 p2p-dependency-tunnels-properties {
description
"Groupong for tunnel dependency list of tunnels";
container dependency-tunnels {
description "Dependency tunnels list";
list dependency-tunnel {
key "name";
description "Dependency tunnel entry";
leaf name {
type leafref {
path "../../../../../tunnels/tunnel/name";
require-instance 'false';
}
description "Dependency tunnel name";
}
leaf encoding {
type identityref {
base te-types:lsp-encoding-types;
}
default te-types:lsp-encoding-packet;
description "LSP encoding type";
reference "RFC3945";
}
leaf switching-type {
type identityref {
base te-types:switching-capabilities;
}
default te-types:switching-psc1;
description "LSP switching type";
reference "RFC3945";
}
}
}
}
grouping tunnel-p2p-config {
description
"Configuration parameters relating to TE tunnel";
leaf name {
type string;
description "TE tunnel name.";
}
leaf identifier {
type uint16;
description
"TE tunnel Identifier.";
reference "RFC3209";
}
leaf description {
type string;
default 'None';
description
"Textual description for this TE tunnel";
}
leaf encoding {
type identityref {
base te-types:lsp-encoding-types;
}
default te-types:lsp-encoding-packet;
description "LSP encoding type";
reference "RFC3945";
}
leaf switching-type {
type identityref {
base te-types:switching-capabilities;
}
default te-types:switching-psc1;
description "LSP switching type";
reference "RFC3945";
}
leaf provisioning-state {
type identityref {
base te-types:tunnel-state-type;
}
default te-types:tunnel-state-up;
description "TE tunnel administrative state.";
}
leaf preference {
type uint8 {
range "1..255";
}
default 100;
description
"Specifies a preference for this tunnel.
A lower number signifies a better preference";
}
leaf reoptimize-timer {
type uint16;
units seconds;
description
"frequency of reoptimization of a traffic engineered LSP";
}
leaf source {
type te-types:te-node-id;
description "TE tunnel source node ID.";
}
leaf destination {
type te-types:te-node-id;
description "TE tunnel destination node ID";
}
leaf src-tp-id {
type yang:hex-string;
default '00:00:00:00';
description
"TE tunnel source termination point identifier.";
}
leaf dst-tp-id {
type yang:hex-string;
default '00:00:00:00';
description
"TE tunnel destination termination point identifier.";
}
leaf bidirectional {
type boolean;
default 'false';
description "TE tunnel bidirectional";
}
uses tunnel-p2p-associations-properties;
uses protection-restoration-properties;
uses te-types:tunnel-constraints;
uses p2p-dependency-tunnels-properties;
uses hierarchical-link-properties;
}
grouping tunnel-p2p-associations-properties {
description "TE tunnel association grouping";
container association-objects {
description "TE tunnel associations";
list association-object {
key "type id source";
description "List of association base objects";
reference "RFC4872";
leaf type {
type identityref {
base te-types:association-type;
}
description "Association type";
reference "RFC4872";
}
leaf id {
type uint16;
description "Association ID";
reference "RFC4872";
}
leaf source {
type te-types:te-node-id;
description "Association source";
reference "RFC4872";
}
}
list association-object-extended {
key "type id source global-source extended-id";
description "List of extended association objects";
reference "RFC6780";
leaf type {
type identityref {
base te-types:association-type;
}
description "Association type";
reference "RFC6780, RFC4872";
}
leaf id {
type uint16;
description "Association ID";
reference "RFC6780, RFC4872";
}
leaf source {
type union {
type te-types:te-node-id;
type inet:ip-address;
}
description "Association source node identifier";
reference "RFC6780, RFC4872";
}
leaf global-source {
type uint32;
description "Association global source";
reference "RFC6780";
}
leaf extended-id {
type yang:hex-string;
description "Association extended ID";
reference "RFC6780";
}
}
}
}
grouping path-access-segment-info {
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";
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
"This tunnel is a segment that needs to be coordinated
with previous segment stitched on head-end side.";
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
"This tunnel is a segment that needs to be coordinated
with previous segment stitched on head-end side.";
uses te-types:label-set-info;
}
}
/* TE tunnel configuration/state grouping */
grouping p2p-path-candidate-secondary-path-config {
description
"Configuration parameters relating to a secondary path which
is a candidate for a particular primary path";
leaf secondary-path {
type leafref {
path "../../../../../p2p-secondary-paths/" +
"p2p-secondary-path/name";
}
description
"A reference to the secondary path that should be utilised
when the containing primary path option is in use";
}
leaf path-setup-protocol {
type identityref {
base te-types:path-signaling-type;
}
default te-types:path-setup-static;
description
"Signaling protocol used to set up this tunnel";
}
}
grouping p2p-secondary-reverse-path-properties {
description
"Configuration parameters relating to a secondary path which
is a candidate for a particular primary path";
leaf secondary-path {
type leafref {
path "../../../../../p2p-secondary-paths/" +
"p2p-secondary-path/name";
}
description
"A reference to the secondary path that should be utilised
when the containing primary path option is in use";
}
leaf path-setup-protocol {
type identityref {
base te-types:path-signaling-type;
}
default te-types:path-setup-static;
description
"Signaling protocol used to set up this tunnel";
}
}
grouping tunnel-p2p-properties {
description
"Top level grouping for tunnel properties.";
leaf operational-state {
type identityref {