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ietf-pcep.yang
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module ietf-pcep {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-pcep";
prefix pcep;
import ietf-inet-types {
prefix inet;
reference
"RFC 6991: Common YANG Data Types";
}
import ietf-yang-types {
prefix yang;
reference
"RFC 6991: Common YANG Data Types";
}
import ietf-te {
prefix te;
reference
"I-D.ietf-teas-yang-te: A YANG Data Model for Traffic
Engineering Tunnels and Interfaces";
}
import ietf-te-types {
prefix te-types;
reference
"I-D.ietf-teas-yang-te-types: Traffic Engineering Common YANG
Types";
}
import ietf-key-chain {
prefix key-chain;
reference
"RFC 8177: YANG Data Model for Key Chains";
}
import ietf-netconf-acm {
prefix nacm;
reference
"RFC 8341: Network Configuration Protocol (NETCONF) Access
Control Model";
}
import ietf-tls-server {
prefix tlss;
reference
"I-D.ietf-netconf-tls-client-server: YANG Groupings for TLS
Clients and TLS Servers";
}
import ietf-tls-client {
prefix tlsc;
reference
"I-D.ietf-netconf-tls-client-server: YANG Groupings for TLS
Clients and TLS Servers";
}
import ietf-ospf {
prefix ospf;
reference
"I-D.ietf-ospf-yang: YANG Data Model for OSPF Protocol";
}
import ietf-isis {
prefix isis;
reference
"I-D.ietf-isis-yang-isis-cfg: YANG Data Model for IS-IS
Protocol";
}
organization
"IETF PCE (Path Computation Element) Working Group";
contact
"WG Web: <https://tools.ietf.org/wg/pce/>
WG List: <mailto:[email protected]>
Editor: Dhruv Dhody
<mailto:[email protected]>";
description
"The YANG module defines a generic configuration and
operational model for PCEP.
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.";
revision 2019-07-01 {
description
"Initial revision.";
reference
"RFC XXXX: A YANG Data Model for Path Computation
Element Communications Protocol (PCEP)";
}
/*
* Typedefs
*/
typedef pcep-role {
type enumeration {
enum unknown {
value 0;
description
"An unknown role";
}
enum pcc {
value 1;
description
"The role of a Path Computation Client";
}
enum pce {
value 2;
description
"The role of Path Computation Element";
}
enum pcc-and-pce {
value 3;
description
"The role of both Path Computation Client and
Path Computation Element";
}
}
description
"The role of a PCEP speaker.
Takes one of the following values
- unknown(0): the role is not known.
- pcc(1): the role is of a Path Computation
Client (PCC).
- pce(2): the role is of a Path Computation
Server (PCE).
- pccAndPce(3): the role is of both a PCC and
a PCE.";
}
typedef pcep-oper-status {
type enumeration {
enum oper-status-up {
value 1;
description
"The PCEP entity is active";
}
enum oper-status-down {
value 2;
description
"The PCEP entity is inactive";
}
enum oper-status-going-up {
value 3;
description
"The PCEP entity is activating";
}
enum oper-status-going-down {
value 4;
description
"The PCEP entity is deactivating";
}
enum oper-status-failed {
value 5;
description
"The PCEP entity has failed and will recover
when possible.";
}
enum oper-status-failed-perm {
value 6;
description
"The PCEP entity has failed and will not recover
without operator intervention";
}
}
description
"The operational status of the PCEP entity.
Takes one of the following values
- oper-status-up(1): Active
- oper-status-down(2): Inactive
- oper-status-going-up(3): Activating
- oper-status-going-down(4): Deactivating
- oper-status-failed(5): Failed
- oper-status-failed-perm(6): Failed Permanantly";
reference
"RFC 5440: Path Computation Element (PCE) Communication
Protocol (PCEP)";
}
typedef pcep-initiator {
type enumeration {
enum local {
value 1;
description
"The local PCEP entity initiated the session";
}
enum remote {
value 2;
description
"The remote PCEP peer initiated the session";
}
}
description
"The initiator of the session, that is, whether the TCP
connection was initiated by the local PCEP entity or
the remote peer.
Takes one of the following values
- local(1): Initiated locally
- remote(2): Initiated remotely";
}
typedef pcep-sess-state {
type enumeration {
enum tcp-pending {
value 1;
description
"The tcp-pending state of PCEP session.";
}
enum open-wait {
value 2;
description
"The open-wait state of PCEP session.";
}
enum keep-wait {
value 3;
description
"The keep-wait state of PCEP session.";
}
enum session-up {
value 4;
description
"The session-up state of PCEP session.";
}
}
description
"The current state of the session.
The set of possible states excludes the idle state
since entries do not exist in the idle state.
Takes one of the following values
- tcp-pending(1): PCEP TCP Pending state
- open-wait(2): PCEP Open Wait state
- keep-wait(3): PCEP Keep Wait state
- session-up(4): PCEP Session Up state";
reference
"RFC 5440: Path Computation Element (PCE) Communication
Protocol (PCEP)";
}
typedef domain-type {
type enumeration {
enum ospf-area {
value 1;
description
"The OSPF area.";
}
enum isis-area {
value 2;
description
"The IS-IS area.";
}
enum as {
value 3;
description
"The Autonomous System (AS).";
}
}
description
"The PCE Domain Type";
}
typedef domain-ospf-area {
type ospf:area-id-type;
description
"OSPF Area ID.";
reference
"I-D.ietf-ospf-yang: YANG Data Model for OSPF Protocol";
}
typedef domain-isis-area {
type isis:area-address;
description
"IS-IS Area ID.";
reference
"I-D.ietf-isis-yang-isis-cfg: YANG Data Model for IS-IS
Protocol";
}
typedef domain-as {
type inet:as-number;
description
"Autonomous System number.";
}
typedef domain {
type union {
type domain-ospf-area;
type domain-isis-area;
type domain-as;
}
description
"The Domain Information";
}
typedef operational-state {
type enumeration {
enum down {
value 0;
description
"not active.";
}
enum up {
value 1;
description
"signalled.";
}
enum active {
value 2;
description
"up and carrying traffic.";
}
enum going-down {
value 3;
description
"LSP is being torn down, resources are
being released.";
}
enum going-up {
value 4;
description
"LSP is being signalled.";
}
}
description
"The operational status of the LSP";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
typedef sync-state {
type enumeration {
enum pending {
value 0;
description
"The state synchronization
has not started.";
}
enum ongoing {
value 1;
description
"The state synchronization
is ongoing.";
}
enum finished {
value 2;
description
"The state synchronization
is finished.";
}
}
description
"The LSP-DB state synchronization operational
status.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
/*
* Features
*/
feature svec {
description
"Support synchronized path computation.";
reference
"RFC 5440: Path Computation Element (PCE) Communication
Protocol (PCEP)";
}
feature gmpls {
description
"Support GMPLS.";
reference
"I-D.ietf-pce-gmpls-pcep-extensions: PCEP extensions for
GMPLS";
}
feature objective-function {
description
"Support OF as per RFC 5541.";
reference
"RFC 5541: Encoding of Objective Functions in the Path
Computation Element Communication Protocol (PCEP)";
}
feature global-concurrent {
description
"Support GCO as per RFC 5557.";
reference
"RFC 5557: Path Computation Element Communication Protocol
(PCEP) Requirements and Protocol Extensions in Support of
Global Concurrent Optimization";
}
feature path-key {
description
"Support path-key as per RFC 5520.";
reference
"RFC 5520: Preserving Topology Confidentiality in Inter-
Domain Path Computation Using a Path-Key-Based Mechanism";
}
feature p2mp {
description
"Support P2MP as per RFC 8306.";
reference
"RFC 8306: Extensions to the Path Computation Element
Communication Protocol (PCEP) for Point-to-Multipoint
Traffic Engineering Label Switched Paths";
}
feature stateful {
description
"Support stateful PCE as per RFC 8231.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
feature sync-opt {
description
"Support stateful sync optimization
as per RFC 8232";
reference
"RFC 8232: Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE";
}
feature pce-initiated {
description
"Support PCE-Initiated LSP as per
RFC 8281.";
reference
"RFC 8281: Path Computation Element Communication Protocol
(PCEP) Extensions for PCE-Initiated LSP Setup in a Stateful
PCE Model";
}
feature tls {
description
"Support PCEP over TLS as per
RFC 8253.";
reference
"RFC 8253: PCEPS: Usage of TLS to Provide a Secure Transport
for the Path Computation Element Communication Protocol
(PCEP)";
}
feature sr {
description
"Support Segment Routing for PCE.";
reference
"I-D.ietf-pce-segment-routing: PCEP Extensions for Segment
Routing";
}
feature association {
description
"Support Association in PCEP.";
reference
"I-D.ietf-pce-association-group: PCEP Extensions for
Establishing Relationships Between Sets of LSPs";
}
/*
* Identities
*/
identity lsp-error {
if-feature "stateful";
description
"Base LSP error";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity no-error-lsp-error {
base lsp-error;
if-feature "stateful";
description
"No error, LSP is fine.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity unknown-lsp-error {
base lsp-error;
if-feature "stateful";
description
"Unknown reason.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity limit-lsp-error {
base lsp-error;
if-feature "stateful";
description
"Limit reached for PCE-controlled LSPs.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity pending-lsp-error {
base lsp-error;
if-feature "stateful";
description
"Too many pending LSP update requests.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity unacceptable-lsp-error {
base lsp-error;
if-feature "stateful";
description
"Unacceptable parameters.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity internal-lsp-error {
base lsp-error;
if-feature "stateful";
description
"Internal error.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity admin-lsp-error {
base lsp-error;
if-feature "stateful";
description
"LSP administratively brought down.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity preempted-lsp-error {
base lsp-error;
if-feature "stateful";
description
"LSP preempted.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
identity rsvp-lsp-error {
base lsp-error;
if-feature "stateful";
description
"RSVP signaling error.";
reference
"RFC 8231: Path Computation Element Communication Protocol
(PCEP) Extensions for Stateful PCE";
}
/*
* Groupings
*/
grouping pce-scope {
description
"This grouping defines PCE path computation scope
information which maybe relevant to PCE selection.
This information corresponds to PCE auto-discovery
information.";
reference
"RFC 5088: OSPF Protocol Extensions for Path
Computation Element (PCE) Discovery
RFC 5089: IS-IS Protocol Extensions for Path
Computation Element (PCE) Discovery";
leaf path-scope {
type bits {
bit intra-area-scope {
description
"PCE can compute intra-area paths.";
}
bit inter-area-scope {
description
"PCE can compute inter-area paths.";
}
bit inter-area-scope-default {
description
"PCE can act as a default PCE for inter-area
path computation.";
}
bit inter-as-scope {
description
"PCE can compute inter-AS paths.";
}
bit inter-as-scope-default {
description
"PCE can act as a default PCE for inter-AS
path computation.";
}
bit inter-layer-scope {
description
"PCE can compute inter-layer paths.";
}
}
description
"The field corresponding to the path scope bits";
}
leaf intra-area-pref {
type uint8 {
range "0..7";
}
description
"The PCE's preference for intra-area TE LSP
computation.";
}
leaf inter-area-pref {
type uint8 {
range "0..7";
}
description
"The PCE's preference for inter-area TE LSP
computation.";
}
leaf inter-as-pref {
type uint8 {
range "0..7";
}
description
"The PCE's preference for inter-AS TE LSP
computation.";
}
leaf inter-layer-pref {
type uint8 {
range "0..7";
}
description
"The PCE's preference for inter-layer TE LSP
computation.";
}
}
//pce-scope
grouping domain {
description
"This grouping specifies a Domain where the
PCEP speaker has topology visibility.";
leaf domain-type {
type domain-type;
description
"The domain type.";
}
leaf domain {
type domain;
description
"The domain Information.";
}
}
//domain
grouping info {
description
"This grouping specifies all information which
maybe relevant to both PCC and PCE.
This information corresponds to PCE auto-discovery
information.";
container domain {
description
"The local domain for the PCEP entity";
list domain {
key "domain-type domain";
description
"The local domain.";
uses domain {
description
"The local domain for the PCEP entity.";
}
}
}
container capability {
description
"The PCEP entity capability information of local
PCEP entity. This maybe relevant to PCE selection
as well. This information corresponds to PCE auto-
discovery information.";
reference
"RFC 5088: OSPF Protocol Extensions for Path
Computation Element (PCE) Discovery
RFC 5089: IS-IS Protocol Extensions for Path
Computation Element (PCE) Discovery";
leaf capability {
type bits {
bit gmpls {
if-feature "gmpls";
description
"Path computation with GMPLS link
constraints.";
}
bit bi-dir {
description
"Bidirectional path computation.";
}
bit diverse {
description
"Diverse path computation.";
}
bit load-balance {
description
"Load-balanced path computation.";
}
bit synchronize {
if-feature "svec";
description
"Synchronized paths computation.";
}
bit objective-function {
if-feature "objective-function";
description
"Support for multiple objective functions.";
}
bit add-path-constraint {
description
"Support for additive path constraints (max
hop count, etc.).";
}
bit prioritization {
description
"Support for request prioritization.";
}
bit multi-request {
description
"Support for multiple requests per message.";
}
bit global-concurrent {
if-feature "global-concurrent";
description
"Support for Global Concurrent Optimization
(GCO).";
}
bit p2mp {
if-feature "p2mp";
description
"Support for P2MP path computation.";
}
bit active {
if-feature "stateful";
description
"Support for active stateful PCE.";
}
bit passive {
if-feature "stateful";
description
"Support for passive stateful PCE.";
}
bit p2mp-active {
if-feature "stateful";
if-feature "p2mp";
description
"Support for active stateful PCE for P2MP.";
}
bit p2mp-passive {
if-feature "stateful";
if-feature "p2mp";
description
"Support for passive stateful PCE for P2MP.";
}
bit p2mp-pce-initiated {
if-feature "stateful";
if-feature "pce-initiated";
if-feature "p2mp";
description
"Support for PCE-initiated LSP for P2MP.";
}
}
description
"The bits string indicating the capabiliies";
reference
"RFC 5088: OSPF Protocol Extensions for Path
Computation Element (PCE) Discovery
RFC 5089: IS-IS Protocol Extensions for Path
Computation Element (PCE) Discovery";
}
leaf pce-initiated {
if-feature "pce-initiated";
type boolean;
description
"Set to true if PCE-initiated LSP capability is
enabled.";
reference
"RFC 8281: Path Computation Element Communication
Protocol (PCEP) Extensions for PCE-Initiated LSP
Setup in a Stateful PCE Model";
}
leaf include-db-ver {
if-feature "stateful";
if-feature "sync-opt";
type boolean;
description
"Support inclusion of LSP-DB-VERSION
in LSP object";
reference
"RFC 8232: Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE";
}
leaf trigger-resync {
if-feature "stateful";
if-feature "sync-opt";
type boolean;
description
"Support PCE triggered re-synchronization";
reference
"RFC 8232: Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE";
}
leaf trigger-initial-sync {
if-feature "stateful";
if-feature "sync-opt";
type boolean;
description
"PCE triggered initial synchronization";
reference
"RFC 8232: Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE";
}
leaf incremental-sync {
if-feature "stateful";
if-feature "sync-opt";
type boolean;
description
"Support incremental (delta) sync";
reference
"RFC 8232: Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE";
}
container sr {
if-feature "sr";
description
"If segment routing is supported";
reference
"I-D.ietf-pce-segment-routing: PCEP Extensions for Segment
Routing";
leaf enabled {
type boolean;
description
"Set to true if SR is enabled";
}
leaf msd-limit {
type boolean;
default "false";
description
"True indicates no limit on MSD, the
leaf msd is ignored";
}
leaf nai {
type boolean;
default "false";
description
"True indicates capability to resolve NAI
to SID";
}
}
//sr
}
//capability
leaf msd {
if-feature "sr";
type uint8;
description
"Maximum SID Depth for SR";
reference
"I-D.ietf-pce-segment-routing: PCEP Extensions for Segment
Routing";
}
}
//info
grouping pce-info {
description
"This grouping specifies all PCE information
which maybe relevant to the PCE selection.
This information corresponds to PCE auto-discovery
information.";
container scope {
description
"The path computation scope";
uses pce-scope;
}
container neigh-domains {
description
"The list of neighbour PCE-Domain
toward which a PCE can compute
paths";
list domain {
key "domain-type domain";
description
"The neighbour domain.";
uses domain {
description
"The PCE neighbour domain.";
}
}
}
}
//pce-info
grouping notification-instance-hdr {
description
"This group describes common instance specific data
for notifications.";
leaf peer-addr {
type leafref {
path "/pcep/entity/peers/peer/addr";
}
description
"Reference to peer address";
}
}
// notification-instance-hdr
grouping notification-session-hdr {
description
"This group describes common session instance specific
data for notifications.";
leaf session-initiator {
type leafref {
path "/pcep/entity/peers/peer/sessions/"
+ "session/initiator";
}
description
"Reference to pcep session initiator leaf";
}
}
// notification-session-hdr
grouping of-list {
description
"List of OF";
reference
"RFC 5541: Encoding of Objective Functions in the Path
Computation Element Communication Protocol (PCEP)";
list objective-function {
key "of";
description
"The list of authorized OF";
leaf of {
type identityref {
base te-types:objective-function-type;
}
description
"The OF authorized";
}
}
}
/*
* Configuration data nodes
*/
container pcep {
presence "The PCEP is enabled";
description
"Parameters for list of configured PCEP entities
on the device.";
container entity {
description
"The configured PCEP entity on the device.";
leaf addr {
type inet:ip-address;
mandatory true;
description
"The local Internet address of this PCEP entity.
If operating as a PCE server, the PCEP entity
listens on this address. If operating as a PCC,
the PCEP entity binds outgoing TCP connections
to this address. It is possible for the PCEP entity
to operate both as a PCC and a PCE Server, in which
case it uses this address both to listen for incoming
TCP connections and to bind outgoing TCP connections.";
}
leaf enabled {