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ietf-te-topology.yang
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ietf-te-topology.yang
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module ietf-te-topology {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology";
prefix "tet";
import ietf-yang-types {
prefix "yang";
}
import ietf-inet-types {
prefix "inet";
}
import ietf-te-types {
prefix "te-types";
}
import ietf-network {
prefix "nw";
}
import ietf-network-topology {
prefix "nt";
}
import ietf-routing-types {
prefix "rt-types";
}
organization
"Traffic Engineering Architecture and Signaling (TEAS)
Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/teas/>
WG List: <mailto:teas@ietf.org>
WG Chair: Lou Berger
<mailto:lberger@labn.net>
WG Chair: Vishnu Pavan Beeram
<mailto:vbeeram@juniper.net>
Editor: Xufeng Liu
<mailto:Xufeng_Liu@jabil.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 "TE topology model";
revision "2017-06-10" {
description "Initial revision";
reference "TBD";
}
/*
* Features
*/
feature nsrlg {
description
"This feature indicates that the system supports NSRLG
(Not Sharing Risk Link Group).";
}
feature te-topology-hierarchy {
description
"This feature indicates that the system allows underlay
and/or overlay TE topology hierarchy.";
}
feature template {
description
"This feature indicates that the system supports
template configuration.";
}
/*
* Typedefs
*/
typedef geographic-coordinate-degree {
type decimal64 {
fraction-digits 8;
}
description
"Decimal degree (DD) used to express latitude and longitude
geographic coordinates.";
} // geographic-coordinate-degree
typedef te-bandwidth {
type string {
pattern
'0[xX](0((\.0?)?[pP](\+)?0?|(\.0?))|'
+ '1(\.([\da-fA-F]{0,5}[02468aAcCeE]?)?)?[pP](\+)?(12[0-7]|'
+ '1[01]\d|0?\d?\d)?)|0[xX][\da-fA-F]{1,8}|\d+'
+ '(,(0[xX](0((\.0?)?[pP](\+)?0?|(\.0?))|'
+ '1(\.([\da-fA-F]{0,5}[02468aAcCeE]?)?)?[pP](\+)?(12[0-7]|'
+ '1[01]\d|0?\d?\d)?)|0[xX][\da-fA-F]{1,8}|\d+))*';
}
description
"This is the generic bandwidth type that is a string containing
a list of numbers separated by commas, with each of these
number can be non-negative decimal, hex integer, or hex float:
(dec | hex | float)[*(','(dec | hex | float))]
For packet switching type, a float number is used, such as
0x1p10.
For OTN switching type, a list of integers can be used, such
as '0,2,3,1', indicating 2 odu0's and 1 odu3.
For DWDM, a list of pairs of slot number and width can be
used, such as '0, 2, 3, 3', indicating a frequency slot 0 with
slot width 2 and a frequency slot 3 with slot width 3.";
} // te-bandwidth
typedef te-info-source {
type enumeration {
enum "unknown" {
description "The source is unknown.";
}
enum "locally-configured" {
description "Configured entity.";
}
enum "ospfv2" {
description "OSPFv2.";
}
enum "ospfv3" {
description "OSPFv3.";
}
enum "isis" {
description "ISIS.";
}
enum "bgp-ls" {
description "BGP-LS.";
reference
"RFC7752: North-Bound Distribution of Link-State and
Traffic Engineering (TE) Information Using BGP";
}
enum "system-processed" {
description "System processed entity.";
}
enum "other" {
description "Other source.";
}
}
description
"Describining the type of source that has provided the
related information, and the source credibility.";
} // te-info-source
typedef te-path-disjointness {
type bits {
bit node {
position 0;
description "Node disjoint.";
}
bit link {
position 1;
description "Link disjoint.";
}
bit srlg {
position 2;
description "SRLG (Shared Risk Link Group) disjoint.";
}
}
description
"Type of the resource disjointness for a TE tunnel path.";
reference
"RFC4872: RSVP-TE Extensions in Support of End-to-End
Generalized Multi-Protocol Label Switching (GMPLS)
Recovery";
} // te-path-disjointness
/*
* Groupings
*/
grouping connectivity-label-restriction-list {
description
"List of abel restrictions specifying what labels may or may
not be used on a link connectivity.";
list label-restriction {
key "inclusive-exclusive label-start";
description
"List of abel restrictions specifying what labels may or may
not be used on a link connectivity.";
reference
"RFC7579: General Network Element Constraint Encoding
for GMPLS-Controlled Networks";
leaf inclusive-exclusive {
type enumeration {
enum inclusive {
description "The label or label range is inclusive.";
}
enum exclusive {
description "The label or label range is exclusive.";
}
}
description
"Whether the list item is inclusive or exclusive.";
}
leaf label-start {
type rt-types:generalized-label;
description
"This is the starting lable if a lable range is specified.
This is the lable value if a single lable is specified,
in which case, attribute 'label-end' is not set.";
}
leaf label-end {
type rt-types:generalized-label;
description
"The ending lable if a lable range is specified;
This attribute is not set, If a single lable is
specified.";
}
leaf range-bitmap {
type binary;
description
"When there are gaps between label-start and label-end,
this attribute is used to specified the possitions
of the used labels.";
}
}
} // connectivity-label-restriction-list
grouping connectivity-matrix-entry-attributes {
description
"Attributes of connectivity matrix entry.";
leaf is-allowed {
type boolean;
description
"true - switching is allowed,
false - switching is disallowed.";
}
container underlay {
if-feature te-topology-hierarchy;
description "Attributes of the te-link underlay.";
reference
"RFC4206: Label Switched Paths (LSP) Hierarchy with
Generalized Multi-Protocol Label Switching (GMPLS)
Traffic Engineering (TE)";
uses te-link-underlay-attributes;
} // underlay
uses te-link-iscd-attributes;
uses te-link-connectivity-attributes;
} // connectivity-matrix-entry-attributes
grouping geolocation-container {
description
"A container containing a GPS location.";
container geolocation{
description
"A container containing a GPS location.";
leaf altitude {
type int64;
units millimeter;
description
"Distance above the sea level.";
}
leaf latitude {
type geographic-coordinate-degree {
range "-90..90";
}
description
"Relative position north or south on the Earth's surface.";
}
leaf longitude {
type geographic-coordinate-degree {
range "-180..180";
}
description
"Angular distance east or west on the Earth's surface.";
}
} // gps-location
} // geolocation-container
grouping information-source-state-attributes {
description
"The attributes identifying source that has provided the
related information, and the source credibility.";
leaf credibility-preference {
type uint16;
description
"The preference value to calculate the traffic
engineering database credibility value used for
tie-break selection between different
information-source values.
Higher value is more preferable.";
}
leaf logical-network-element {
type string;
description
"When applicable, this is the name of a logical network
element from which the information is learned.";
} // logical-network-element
leaf network-instance {
type string;
description
"When applicable, this is the name of a network-instance
from which the information is learned.";
} // network-instance
} // information-source-state-attributes
grouping information-source-per-link-attributes {
description
"Per node container of the attributes identifying source that
has provided the related information, and the source
credibility.";
leaf information-source {
type te-info-source;
description
"Indicates the source of the information.";
}
container information-source-state {
description
"The container contains state attributes related to
the information source.";
uses information-source-state-attributes;
container topology {
description
"When the information is processed by the system,
the attributes in this container indicate which topology
is used to process to generate the result information.";
uses te-topology-ref;
leaf link-ref {
type leafref {
path "/nw:networks/nw:network[nw:network-id = "
+ "current()/../network-ref]/nt:link/nt:link-id";
require-instance false;
}
description
"A reference to a link-id.";
}
} // topology
} // information-source-state
} // information-source-per-link-attributes
grouping information-source-per-node-attributes {
description
"Per node container of the attributes identifying source that
has provided the related information, and the source
credibility.";
leaf information-source {
type te-info-source;
description
"Indicates the source of the information.";
}
container information-source-state {
description
"The container contains state attributes related to
the information source.";
uses information-source-state-attributes;
container topology {
description
"When the information is processed by the system,
the attributes in this container indicate which topology
is used to process to generate the result information.";
uses te-topology-ref;
leaf node-ref {
type leafref {
path "/nw:networks/nw:network[nw:network-id = "
+ "current()/../network-ref]/nw:node/nw:node-id";
require-instance false;
}
description
"A reference to a node-id.";
}
} // topology
} // information-source-state
} // information-source-per-node-attributes
grouping interface-switching-capability-list {
description
"List of Interface Switching Capabilities Descriptors (ISCD)";
list interface-switching-capability {
key "switching-capability encoding";
description
"List of Interface Switching Capabilities Descriptors (ISCD)
for this link.";
reference
"RFC3471: Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Functional Description.
RFC4203: OSPF Extensions in Support of Generalized
Multi-Protocol Label Switching (GMPLS).";
leaf switching-capability {
type identityref {
base te-types:switching-capabilities;
}
description
"Switching Capability for this interface.";
}
leaf encoding {
type identityref {
base te-types:lsp-encoding-types;
}
description
"Encoding supported by this interface.";
}
uses te-link-iscd-attributes;
} // interface-switching-capability
} // interface-switching-capability-list
grouping statistics-per-link {
description
"Statistics attributes per TE link.";
leaf discontinuity-time {
type yang:date-and-time;
mandatory true;
description
"The time on the most recent occasion at which any one or
more of this interface's counters suffered a
discontinuity. If no such discontinuities have occurred
since the last re-initialization of the local management
subsystem, then this node contains the time the local
management subsystem re-initialized itself.";
}
/* Administrative attributes */
leaf disables {
type yang:counter32;
description
"Number of times that link was disabled.";
}
leaf enables {
type yang:counter32;
description
"Number of times that link was enabled.";
}
leaf maintenance-clears {
type yang:counter32;
description
"Number of times that link was put out of maintenance.";
}
leaf maintenance-sets {
type yang:counter32;
description
"Number of times that link was put in maintenance.";
}
leaf modifies {
type yang:counter32;
description
"Number of times that link was modified.";
}
/* Operational attributes */
leaf downs {
type yang:counter32;
description
"Number of times that link was set to operational down.";
}
leaf ups {
type yang:counter32;
description
"Number of times that link was set to operational up.";
}
/* Recovery attributes */
leaf fault-clears {
type yang:counter32;
description
"Number of times that link experienced fault clear event.";
}
leaf fault-detects {
type yang:counter32;
description
"Number of times that link experienced fault detection.";
}
leaf protection-switches {
type yang:counter32;
description
"Number of times that link experienced protection
switchover.";
}
leaf protection-reverts {
type yang:counter32;
description
"Number of times that link experienced protection
reversion.";
}
leaf restoration-failures {
type yang:counter32;
description
"Number of times that link experienced restoration
failure.";
}
leaf restoration-starts {
type yang:counter32;
description
"Number of times that link experienced restoration
start.";
}
leaf restoration-successes {
type yang:counter32;
description
"Number of times that link experienced restoration
success.";
}
leaf restoration-reversion-failures {
type yang:counter32;
description
"Number of times that link experienced restoration reversion
failure.";
}
leaf restoration-reversion-starts {
type yang:counter32;
description
"Number of times that link experienced restoration reversion
start.";
}
leaf restoration-reversion-successes {
type yang:counter32;
description
"Number of times that link experienced restoration reversion
success.";
}
} // statistics-per-link
grouping statistics-per-node {
description
"Statistics attributes per TE node.";
leaf discontinuity-time {
type yang:date-and-time;
mandatory true;
description
"The time on the most recent occasion at which any one or
more of this interface's counters suffered a
discontinuity. If no such discontinuities have occurred
since the last re-initialization of the local management
subsystem, then this node contains the time the local
management subsystem re-initialized itself.";
}
container node {
description
"Containing TE node level statistics attributes.";
leaf disables {
type yang:counter32;
description
"Number of times that node was disabled.";
}
leaf enables {
type yang:counter32;
description
"Number of times that node was enabled.";
}
leaf maintenance-sets {
type yang:counter32;
description
"Number of times that node was put in maintenance.";
}
leaf maintenance-clears {
type yang:counter32;
description
"Number of times that node was put out of maintenance.";
}
leaf modifies {
type yang:counter32;
description
"Number of times that node was modified.";
}
} // node
container connectivity-matrix-entry {
description
"Containing connectivity matrix entry level statistics
attributes.";
leaf creates {
type yang:counter32;
description
"Number of times that a connectivity matrix entry was
created.";
reference
"RFC6241. Section 7.2 for 'create' operation. ";
}
leaf deletes {
type yang:counter32;
description
"Number of times that a connectivity matrix entry was
deleted.";
reference
"RFC6241. Section 7.2 for 'delete' operation. ";
}
leaf disables {
type yang:counter32;
description
"Number of times that a connectivity matrix entry was
disabled.";
}
leaf enables {
type yang:counter32;
description
"Number of times that a connectivity matrix entry was
enabled.";
}
leaf modifies {
type yang:counter32;
description
"Number of times that a connectivity matrix entry was
modified.";
}
} // connectivity-matrix-entry
} // statistics-per-node
grouping statistics-per-ttp {
description
"Statistics attributes per TE TTP (Tunnel Termination Point).";
leaf discontinuity-time {
type yang:date-and-time;
mandatory true;
description
"The time on the most recent occasion at which any one or
more of this interface's counters suffered a
discontinuity. If no such discontinuities have occurred
since the last re-initialization of the local management
subsystem, then this node contains the time the local
management subsystem re-initialized itself.";
}
container tunnel-termination-point {
description
"Containing TE TTP (Tunnel Termination Point) level
statistics attributes.";
/* Administrative attributes */
leaf disables {
type yang:counter32;
description
"Number of times that TTP was disabled.";
}
leaf enables {
type yang:counter32;
description
"Number of times that TTP was enabled.";
}
leaf maintenance-clears {
type yang:counter32;
description
"Number of times that TTP was put out of maintenance.";
}
leaf maintenance-sets {
type yang:counter32;
description
"Number of times that TTP was put in maintenance.";
}
leaf modifies {
type yang:counter32;
description
"Number of times that TTP was modified.";
}
/* Operational attributes */
leaf downs {
type yang:counter32;
description
"Number of times that TTP was set to operational down.";
}
leaf ups {
type yang:counter32;
description
"Number of times that TTP was set to operational up.";
}
leaf in-service-clears {
type yang:counter32;
description
"Number of times that TTP was taken out of service
(TE tunnel was released).";
}
leaf in-service-sets {
type yang:counter32;
description
"Number of times that TTP was put in service by a TE
tunnel (TE tunnel was set up).";
}
} // tunnel-termination-point
container local-link-connectivity {
description
"Containing TE LLCL (Local Link Connectivity List) level
statistics attributes.";
leaf creates {
type yang:counter32;
description
"Number of times that an LLCL entry was created.";
reference
"RFC6241. Section 7.2 for 'create' operation. ";
}
leaf deletes {
type yang:counter32;
description
"Number of times that an LLCL entry was deleted.";
reference
"RFC6241. Section 7.2 for 'delete' operation.";
}
leaf disables {
type yang:counter32;
description
"Number of times that an LLCL entry was disabled.";
}
leaf enables {
type yang:counter32;
description
"Number of times that an LLCL entry was enabled.";
}
leaf modifies {
type yang:counter32;
description
"Number of times that an LLCL entry was modified.";
}
} // local-link-connectivity
} // statistics-per-ttp
grouping te-link-config {
description
"TE link configuration grouping.";
choice bundle-stack-level {
description
"The TE link can be partitioned into bundled
links, or component links.";
case bundle {
container bundled-links {
description
"A set of bundled links.";
reference
"RFC4201: Link Bundling in MPLS Traffic Engineering
(TE).";
list bundled-link {
key "sequence";
description
"Specify a bundled interface that is
further partitioned.";
leaf sequence {
type uint32;
description
"Identify the sequence in the bundle.";
}
leaf src-tp-ref {
type leafref {
path "../../../../../../nw:node[nw:node-id = "
+ "current()/../../../../../nt:source/"
+ "nt:source-node]/"
+ "nt:termination-point/nt:tp-id";
require-instance true;
}
description
"Reference to another TE termination point on the
same souruce node.";
}
leaf des-tp-ref {
type leafref {
path "../../../../../../nw:node[nw:node-id = "
+ "current()/../../../../../nt:destination/"
+ "nt:dest-node]/"
+ "nt:termination-point/nt:tp-id";
require-instance true;
}
description
"Reference to another TE termination point on the
same destination node.";
}
} // list bundled-link
}
}
case component {
container component-links {
description
"A set of component links";
list component-link {
key "sequence";
description
"Specify a component interface that is
sufficient to unambiguously identify the
appropriate resources";
leaf sequence {
type uint32;
description
"Identify the sequence in the bundle.";
}
leaf src-interface-ref {
type string;
description
"Reference to component link interface on the
source node.";
}
leaf des-interface-ref {
type string;
description
"Reference to component link interface on the
destinatioin node.";
}
}
}
}
} // bundle-stack-level
leaf-list te-link-template {
if-feature template;
type leafref {
path "../../../../../te/templates/link-template/name";
}
description
"The reference to a TE link template.";
}
uses te-link-config-attributes;
} // te-link-config
grouping te-link-config-attributes {
description
"Link configuration attributes in a TE topology.";
container te-link-attributes {
description "Link attributes in a TE topology.";
leaf access-type {
type te-types:te-link-access-type;
description
"Link access type, which can be point-to-point or
multi-access.";
}
container external-domain {
description
"For an inter-domain link, specify the attributes of
the remote end of link, to facilitate the signalling at
local end.";
uses te-topology-ref;
leaf remote-te-node-id {
type te-types:te-node-id;
description
"Remote TE node identifier, used together with
remote-te-link-id to identify the remote link
termination point in a different domain.";
}
leaf remote-te-link-tp-id {
type te-types:te-tp-id;
description
"Remote TE link termination point identifier, used
together with remote-te-node-id to identify the remote
link termination point in a different domain.";
}
leaf plug-id {
type uint32;
description
"A topology-wide unique number that identifies on the
network a connectivity supporting a given inter-domain
TE link. This is more flexible alternative to specifying
remote-te-node-id and remote-te-link-tp-id, when the
provider does not know remote-te-node-id and
remote-te-link-tp-id or need to give client the
flexibility to mix-n-match multiple topologies.";
}
}
leaf is-abstract {
type empty;
description "Present if the link is abstract.";
}
leaf name {
type string;
description "Link Name.";
}
container underlay {
if-feature te-topology-hierarchy;
description "Attributes of the te-link underlay.";
reference
"RFC4206: Label Switched Paths (LSP) Hierarchy with
Generalized Multi-Protocol Label Switching (GMPLS)
Traffic Engineering (TE)";
uses te-link-underlay-attributes;
} // underlay
leaf admin-status {
type te-types:te-admin-status;
description
"The administrative state of the link.";
}
uses te-link-info-attributes;
} // te-link-attributes
} // te-link-config-attributes
grouping te-link-connectivity-attributes {
description
"Advertised TE connectivity attributes.";
leaf max-link-bandwidth {
type te-bandwidth;
description
"Maximum bandwidth that can be seen on this link in this
direction. Units in bytes per second.";
reference
"RFC3630: Traffic Engineering (TE) Extensions to OSPF
Version 2.
RFC5305: IS-IS Extensions for Traffic Engineering.";
}
leaf max-resv-link-bandwidth {
type te-bandwidth;
description
"Maximum amount of bandwidth that can be reserved in this
direction in this link. Units in bytes per second.";
reference
"RFC3630: Traffic Engineering (TE) Extensions to OSPF
Version 2.
RFC5305: IS-IS Extensions for Traffic Engineering.";
}
list unreserved-bandwidth {
key "priority";
max-elements "8";
description
"Unreserved bandwidth for 0-7 priority levels. Units in
bytes per second.";
reference
"RFC3630: Traffic Engineering (TE) Extensions to OSPF
Version 2.
RFC5305: IS-IS Extensions for Traffic Engineering.";
leaf priority {
type uint8 {
range "0..7";
}
description "Priority.";
}
leaf bandwidth {
type te-bandwidth;
description
"Unreserved bandwidth for this level.";
}
}
leaf te-default-metric {
type uint32;
description
"Traffic engineering metric.";
}
leaf te-delay-metric {
type uint32;
description
"Traffic engineering delay metric.";
}
container te-srlgs {
description
"Containing a list of SLRGs.";
leaf-list value {
type te-types:srlg;
description "SRLG value.";
reference
"RFC4202: Routing Extensions in Support of
Generalized Multi-Protocol Label Switching (GMPLS).";
}
}
container te-nsrlgs {
if-feature nsrlg;
description
"Containing a list of NSRLGs (Not Sharing Risk Link
Groups).
When an abstract TE link is configured, this list specifies
the request that underlay TE paths need to be mutually
disjoint with other TE links in the same groups.";
leaf-list id {
type uint32;
description
"NSRLG ID, uniquely configured within a topology.";
reference
"RFC4872: RSVP-TE Extensions in Support of End-to-End
Generalized Multi-Protocol Label Switching (GMPLS)
Recovery";
}
}
} // te-link-connectivity-attributes
grouping te-link-info-attributes {
description
"Advertised TE information attributes.";
leaf link-index {
type uint64;
description
"The link identifier. If OSPF is used, this represents an
ospfLsdbID. If IS-IS is used, this represents an isisLSPID.
If a locally configured link is used, this object represents
a unique value, which is locally defined in a router.";
}
leaf administrative-group {
type te-types:admin-groups;
description
"Administrative group or color of the link.
This attribute covers both administrative group (defined in
RFC3630, RFC5329, and RFC5305), and extended administrative
group (defined in RFC7308).";
}
uses interface-switching-capability-list;
leaf link-protection-type {
type enumeration {
enum "unprotected" {
description "Unprotected.";
}
enum "extra-traffic" {
description "Extra traffic.";
}
enum "shared" {
description "Shared.";
}
enum "1-for-1" {
description "One for one protection.";