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draft-ietf-pce-pcep-yang-08.txt
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draft-ietf-pce-pcep-yang-08.txt
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PCE Working Group D. Dhody, Ed.
Internet-Draft Huawei Technologies
Intended status: Standards Track J. Hardwick
Expires: December 24, 2018 Metaswitch
V. Beeram
Juniper Networks
J. Tantsura
June 22, 2018
A YANG Data Model for Path Computation Element Communications Protocol
(PCEP)
draft-ietf-pce-pcep-yang-08
Abstract
This document defines a YANG data model for the management of Path
Computation Element communications Protocol (PCEP) for communications
between a Path Computation Client (PCC) and a Path Computation
Element (PCE), or between two PCEs. The data model includes
configuration data and state data (status information and counters
for the collection of statistics).
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 24, 2018.
Copyright Notice
Copyright (c) 2018 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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publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Terminology and Notation . . . . . . . . . . . . . . . . . . 3
3.1. Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . 4
3.2. Prefixes in Data Node Names . . . . . . . . . . . . . . . 4
4. Objectives . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. The Design of PCEP Data Model . . . . . . . . . . . . . . . . 6
5.1. The Overview of PCEP Data Model . . . . . . . . . . . . . 6
5.2. The Full PCEP Data Model . . . . . . . . . . . . . . . . 7
5.3. The Entity . . . . . . . . . . . . . . . . . . . . . . . 22
5.4. The Peer Lists . . . . . . . . . . . . . . . . . . . . . 22
5.5. The Session Lists . . . . . . . . . . . . . . . . . . . . 23
5.6. Notifications . . . . . . . . . . . . . . . . . . . . . . 23
5.7. RPC . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6. The Design of PCEP Statistics Data Model . . . . . . . . . . 23
7. Advanced PCE Features . . . . . . . . . . . . . . . . . . . . 27
7.1. Stateful PCE's LSP-DB . . . . . . . . . . . . . . . . . . 28
8. Open Issues and Next Step . . . . . . . . . . . . . . . . . . 28
8.1. The PCE-Initiated LSP . . . . . . . . . . . . . . . . . . 28
9. Other Considerations . . . . . . . . . . . . . . . . . . . . 29
9.1. PCEP over TLS (PCEPS) . . . . . . . . . . . . . . . . . . 29
10. PCEP YANG Modules . . . . . . . . . . . . . . . . . . . . . . 29
10.1. ietf-pcep module . . . . . . . . . . . . . . . . . . . . 29
10.2. ietf-pcep-stats module . . . . . . . . . . . . . . . . . 87
11. Security Considerations . . . . . . . . . . . . . . . . . . . 107
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 108
13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 109
14. References . . . . . . . . . . . . . . . . . . . . . . . . . 109
14.1. Normative References . . . . . . . . . . . . . . . . . . 109
14.2. Informative References . . . . . . . . . . . . . . . . . 111
Appendix A. Example . . . . . . . . . . . . . . . . . . . . . . 112
Appendix B. Contributor Addresses . . . . . . . . . . . . . . . 115
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 116
1. Introduction
The Path Computation Element (PCE) defined in [RFC4655] is an entity
that is capable of computing a network path or route based on a
network graph, and applying computational constraints. A Path
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Computation Client (PCC) may make requests to a PCE for paths to be
computed.
PCEP is the communication protocol between a PCC and PCE and is
defined in [RFC5440]. PCEP interactions include path computation
requests and path computation replies as well as notifications of
specific states related to the use of a PCE in the context of
Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS)
Traffic Engineering (TE). [RFC8231] specifies extensions to PCEP to
enable stateful control of MPLS TE LSPs.
This document defines a YANG [RFC6020] data model for the management
of PCEP speakers. It is important to establish a common data model
for how PCEP speakers are identified, configured, and monitored. The
data model includes configuration data and state data (status
information and counters for the collection of statistics).
This document contains a specification of the PCEP YANG module,
"ietf-pcep" which provides the PCEP [RFC5440] data model.
The PCEP operational state is included in the same tree as the PCEP
configuration consistent with Network Management Datastore
Architecture [RFC8342]. The origin of the data is indicated as per
the origin metadata annotation.
2. Requirements Language
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.
3. Terminology and Notation
This document uses the terminology defined in [RFC4655] and
[RFC5440]. In particular, it uses the following acronyms.
o Path Computation Request message (PCReq).
o Path Computation Reply message (PCRep).
o Notification message (PCNtf).
o Error message (PCErr).
o Request Parameters object (RP).
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o Synchronization Vector object (SVEC).
o Explicit Route object (ERO).
This document also uses the following terms defined in [RFC7420]:
o PCEP entity: a local PCEP speaker.
o PCEP peer: to refer to a remote PCEP speaker.
o PCEP speaker: where it is not necessary to distinguish between
local and remote.
Further, this document also uses the following terms defined in
[RFC8231] :
o Stateful PCE, Passive Stateful PCE, Active Stateful PCE
o Delegation, Revocation, Redelegation
o LSP State Report, Path Computation Report message (PCRpt).
o LSP State Update, Path Computation Update message (PCUpd).
[RFC8281] :
o PCE-initiated LSP, Path Computation LSP Initiate Message
(PCInitiate).
[I-D.ietf-pce-lsp-setup-type] :
o Path Setup Type (PST).
[I-D.ietf-pce-segment-routing] :
o Segment Routing (SR).
3.1. Tree Diagrams
A simplified graphical representation of the data model is used in
this document. The meaning of the symbols in these diagrams is
defined in [RFC8340].
3.2. Prefixes in Data Node Names
In this document, names of data nodes 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
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are prefixed using the standard prefix associated with the
corresponding YANG module, as shown in Table 1.
+-----------+-----------------+-------------------------------------+
| Prefix | YANG module | Reference |
+-----------+-----------------+-------------------------------------+
| yang | ietf-yang-types | [RFC6991] |
| inet | ietf-inet-types | [RFC6991] |
| te | ietf-te | [I-D.ietf-teas-yang-te] |
| te-types | ietf-te-types | [I-D.ietf-teas-yang-te] |
| key-chain | ietf-key-chain | [RFC8177] |
| nacm | ietf-netconf- | [RFC8341] |
| | acm | |
| tls- | ietf-tls-server | [I-D.ietf-netconf-tls-client-server |
| server | | ] |
| tls- | ietf-tls-client | [I-D.ietf-netconf-tls-client-server |
| client | | ] |
+-----------+-----------------+-------------------------------------+
Table 1: Prefixes and corresponding YANG modules
4. Objectives
This section describes some of the design objectives for the model:
o In case of existing implementations, it needs to map the data
model defined in this document to their proprietary native data
model. To facilitate such mappings, the data model should be
simple.
o The data model should be suitable for new implementations to use
as is.
o Mapping to the PCEP MIB Module should be clear.
o The data model should allow for static configurations of peers.
o The data model should include read-only counters in order to
gather statistics for sent and received PCEP messages, received
messages with errors, and messages that could not be sent due to
errors. This could be in a separate model which augments the base
data model.
o It should be fairly straightforward to augment the base data model
for advanced PCE features.
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5. The Design of PCEP Data Model
5.1. The Overview of PCEP Data Model
The PCEP YANG module defined in this document has all the common
building blocks for the PCEP protocol.
module: ietf-pcep
+--rw pcep!
+--rw entity
+--rw addr inet:ip-address
+--rw enabled? boolean
+--rw role pcep-role
+--rw description? string
+--rw speaker-entity-id? string
| {stateful-sync-opt}?
+--rw admin-status? pcep-admin-status
+--ro index? uint32
+--ro oper-status? pcep-oper-status
+--rw domain
| +--rw domain* [domain-type domain]
| ...
+--rw capability
| ...
+--rw pce-info
| +--rw scope
| | ...
| +--rw neigh-domains
| | ...
| +--rw path-key {path-key}?
| ...
+--ro lsp-db {stateful}?
| +--ro db-ver? uint64
| | {stateful-sync-opt}?
| +--ro association-list*
| | [id source global-source extended-id]
| | ...
| +--ro lsp* [plsp-id pcc-id]
| ...
+--ro path-keys {path-key}?
| +--ro path-keys* [path-key]
| ...
+--rw peers
+--rw peer* [addr]
+--ro sessions
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+--ro session* [initiator]
...
rpcs:
+---x trigger-resync {stateful,stateful-sync-opt}?
+---w input
+---w pcc? -> /pcep/entity/peers/peer/addr
notifications:
+---n pcep-session-up
| ...
+---n pcep-session-down
| ...
+---n pcep-session-local-overload
| ...
+---n pcep-session-local-overload-clear
| ...
+---n pcep-session-peer-overload
| ...
+---n pcep-session-peer-overload-clear
...
5.2. The Full PCEP Data Model
The module, "ietf-pcep", defines the basic components of a PCE
speaker.
module: ietf-pcep
+--rw pcep!
+--rw entity
+--rw addr inet:ip-address
+--rw enabled? boolean
+--rw role pcep-role
+--rw description? string
+--rw speaker-entity-id? string
| {stateful-sync-opt}?
+--rw admin-status? pcep-admin-status
+--ro index? uint32
+--ro oper-status? pcep-oper-status
+--rw domain
| +--rw domain* [domain-type domain]
| +--rw domain-type domain-type
| +--rw domain domain
+--rw capability
| +--rw gmpls? boolean {gmpls}?
| +--rw bi-dir? boolean
| +--rw diverse? boolean
| +--rw load-balance? boolean
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| +--rw synchronize? boolean {svec}?
| +--rw objective-function? boolean
| | {objective-function}?
| +--rw add-path-constraint? boolean
| +--rw prioritization? boolean
| +--rw multi-request? boolean
| +--rw gco? boolean {gco}?
| +--rw p2mp? boolean {p2mp}?
| +--rw stateful {stateful}?
| | +--rw enabled? boolean
| | +--rw active? boolean
| | +--rw pce-initiated? boolean {pce-initiated}?
| | +--rw include-db-ver? boolean
| | | {stateful-sync-opt}?
| | +--rw trigger-resync? boolean
| | | {stateful-sync-opt}?
| | +--rw trigger-initial-sync? boolean
| | | {stateful-sync-opt}?
| | +--rw incremental-sync? boolean
| | {stateful-sync-opt}?
| +--rw sr {sr}?
| +--rw enabled? boolean
+--rw pce-info
| +--rw scope
| | +--rw intra-area-scope? boolean
| | +--rw intra-area-pref? uint8
| | +--rw inter-area-scope? boolean
| | +--rw inter-area-scope-default? boolean
| | +--rw inter-area-pref? uint8
| | +--rw inter-as-scope? boolean
| | +--rw inter-as-scope-default? boolean
| | +--rw inter-as-pref? uint8
| | +--rw inter-layer-scope? boolean
| | +--rw inter-layer-pref? uint8
| +--rw neigh-domains
| | +--rw domain* [domain-type domain]
| | +--rw domain-type domain-type
| | +--rw domain domain
| +--rw path-key {path-key}?
| +--rw enabled? boolean
| +--rw discard-timer? uint32
| +--rw reuse-time? uint32
| +--rw pce-id? inet:ip-address
+--rw connect-timer? uint32
+--rw connect-max-retry? uint32
+--rw init-backoff-timer? uint32
+--rw max-backoff-timer? uint32
+--rw open-wait-timer? uint32
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+--rw keep-wait-timer? uint32
+--rw keep-alive-timer? uint32
+--rw dead-timer? uint32
+--rw allow-negotiation? boolean
+--rw max-keep-alive-timer? uint32
+--rw max-dead-timer? uint32
+--rw min-keep-alive-timer? uint32
+--rw min-dead-timer? uint32
+--rw sync-timer? uint32 {svec}?
+--rw request-timer? uint32
+--rw max-sessions? uint32
+--rw max-unknown-reqs? uint32
+--rw max-unknown-msgs? uint32
+--rw pcep-notification-max-rate uint32
+--rw stateful-parameter {stateful}?
| +--rw state-timeout? uint32
| +--rw redelegation-timeout? uint32
| +--rw rpt-non-pcep-lsp? boolean
+--rw of-list {objective-function}?
| +--rw objective-function* [of]
| +--rw of objective-function
+--ro lsp-db {stateful}?
| +--ro db-ver? uint64 {stateful-sync-opt}?
| +--ro association-list*
| | [type id source global-source extended-id]
| | {association}?
| | +--ro type assoc-type
| | +--ro id uint16
| | +--ro source inet:ip-address
| | +--ro global-source uint32
| | +--ro extended-id string
| | +--ro lsp* [plsp-id pcc-id]
| | +--ro plsp-id -> /pcep/entity/lsp-db/lsp/plsp-id
| | +--ro pcc-id -> /pcep/entity/lsp-db/lsp/pcc-id
| +--ro lsp* [plsp-id pcc-id]
| +--ro plsp-id uint32
| +--ro pcc-id inet:ip-address
| +--ro lsp-ref
| | +--ro source?
| | | -> /te:te/lsps-state/lsp/source
| | +--ro destination?
| | | -> /te:te/lsps-state/lsp/destination
| | +--ro tunnel-id?
| | | -> /te:te/lsps-state/lsp/tunnel-id
| | +--ro lsp-id?
| | | -> /te:te/lsps-state/lsp/lsp-id
| | +--ro extended-tunnel-id?
| | -> /te:te/lsps-state/lsp/extended-tunnel-id
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| +--ro admin-state? boolean
| +--ro operational-state? operational-state
| +--ro delegated
| | +--ro enabled? boolean
| | +--ro peer? -> /pcep/entity/peers/peer/addr
| | +--ro srp-id? uint32
| +--ro initiation {pce-initiated}?
| | +--ro enabled? boolean
| | +--ro peer? -> /pcep/entity/peers/peer/addr
| +--ro symbolic-path-name? string
| +--ro last-error? lsp-error
| +--ro pst? pst
| +--ro association-list*
| [type id source global-source extended-id]
| {association}?
| +--ro type
| | -> /pcep/entity/lsp-db/association-list/type
| +--ro id
| | -> /pcep/entity/lsp-db/association-list/id
| +--ro source leafref
| +--ro global-source leafref
| +--ro extended-id leafref
+--ro path-keys {path-key}?
| +--ro path-keys* [path-key]
| +--ro path-key uint16
| +--ro cps
| | +--ro explicit-route-objects* [index]
| | +--ro index uint32
| | +--ro (type)?
| | +--:(num-unnum-hop)
| | | +--ro num-unnum-hop
| | | +--ro node-id? te-types:te-node-id
| | | +--ro link-tp-id? te-types:te-tp-id
| | | +--ro hop-type? te-hop-type
| | | +--ro direction? te-link-direction
| | +--:(as-number)
| | | +--ro as-number-hop
| | | +--ro as-number? binary
| | | +--ro hop-type? te-hop-type
| | +--:(label)
| | +--ro label-hop
| | +--ro te-label
| | +--ro (technology)?
| | | +--:(generic)
| | | +--ro generic?
| | | rt-types:generalized-label
| | +--ro direction?
| | te-label-direction
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| +--ro pcc-original? -> /pcep/entity/peers/peer/addr
| +--ro req-id? uint32
| +--ro retrieved? boolean
| +--ro pcc-retrieved? -> /pcep/entity/peers/peer/addr
| +--ro creation-time? yang:timestamp
| +--ro discard-time? uint32
| +--ro reuse-time? uint32
+--rw peers
+--rw peer* [addr]
+--rw addr inet:ip-address
+--rw role pcep-role
+--rw description? string
+--rw domain
| +--rw domain* [domain-type domain]
| +--rw domain-type domain-type
| +--rw domain domain
+--rw capability
| +--rw gmpls? boolean {gmpls}?
| +--rw bi-dir? boolean
| +--rw diverse? boolean
| +--rw load-balance? boolean
| +--rw synchronize? boolean {svec}?
| +--rw objective-function? boolean
| | {objective-function}?
| +--rw add-path-constraint? boolean
| +--rw prioritization? boolean
| +--rw multi-request? boolean
| +--rw gco? boolean {gco}?
| +--rw p2mp? boolean {p2mp}?
| +--rw stateful {stateful}?
| | +--rw enabled? boolean
| | +--rw active? boolean
| | +--rw pce-initiated? boolean
| | | {pce-initiated}?
| | +--rw include-db-ver? boolean
| | | {stateful-sync-opt}?
| | +--rw trigger-resync? boolean
| | | {stateful-sync-opt}?
| | +--rw trigger-initial-sync? boolean
| | | {stateful-sync-opt}?
| | +--rw incremental-sync? boolean
| | {stateful-sync-opt}?
| +--rw sr {sr}?
| +--rw enabled? boolean
+--rw pce-info
| +--rw scope
| | +--rw intra-area-scope? boolean
| | +--rw intra-area-pref? uint8
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| | +--rw inter-area-scope? boolean
| | +--rw inter-area-scope-default? boolean
| | +--rw inter-area-pref? uint8
| | +--rw inter-as-scope? boolean
| | +--rw inter-as-scope-default? boolean
| | +--rw inter-as-pref? uint8
| | +--rw inter-layer-scope? boolean
| | +--rw inter-layer-pref? uint8
| +--rw neigh-domains
| +--rw domain* [domain-type domain]
| +--rw domain-type domain-type
| +--rw domain domain
+--rw delegation-pref? uint8 {stateful}?
+--rw auth
| +--rw (auth-type-selection)?
| +--:(auth-key-chain)
| | +--rw key-chain?
| | key-chain:key-chain-ref
| +--:(auth-key)
| | +--rw crypto-algorithm identityref
| | +--rw key-string
| | +--rw (key-string-style)?
| | +--:(keystring)
| | | +--rw keystring? string
| | +--:(hexadecimal)
| | {key-chain:hex-key-string}?
| | +--rw hexadecimal-string?
| | yang:hex-string
| +--:(auth-tls) {tls}?
| +--rw (role)?
| +--:(server)
| | +--rw tls-server
| | +--rw server-identity
| | | +--rw (local-or-keystore)
| | | +--:(local)
| | | | +--rw algorithm
| | | | | ct:key-algorithm-ref
| | | | +--rw public-key
| | | | | binary
| | | | +--rw private-key
| | | | | union
| | | | +--rw cert
| | | | | ct:end-entity-cert-cms
| | | | +---n certificate-expiration
| | | | +-- expiration-date?
| | | | yang:date-and-time
| | | +--:(keystore)
| | | {keystore-implemented}?
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| | | +--rw reference
| | | ks:asymmetric-key-certificate-ref
| | +--rw client-auth
| | | +--rw pinned-ca-certs?
| | | | ta:pinned-certificates-ref
| | | +--rw pinned-client-certs?
| | | ta:pinned-certificates-ref
| | +--rw hello-params
| | {tls-server-hello-params-config}?
| | +--rw tls-versions
| | | +--rw tls-version*
| | | identityref
| | +--rw cipher-suites
| | +--rw cipher-suite*
| | identityref
| +--:(client)
| +--rw tls-client
| +--rw client-identity
| | +--rw (auth-type)?
| | +--:(certificate)
| | +--rw certificate
| | +--rw (local-or-keystore)
| | +--:(local)
| | | +--rw algorithm
| | | | ct:key-algorithm-ref
| | | +--rw public-key
| | | | binary
| | | +--rw private-key
| | | | union
| | | +--rw cert
| | | | ct:end-entity-cert-cms
| | | +---n certificate-expiration
| | | +-- expiration-date?
| | | yang:date-and-time
| | +--:(keystore)
| | {keystore-implemented}?
| | +--rw reference
| | ks:asymmetric-key-certificate-ref
| +--rw server-auth
| | +--rw pinned-ca-certs?
| | | ta:pinned-certificates-ref
| | +--rw pinned-server-certs?
| | ta:pinned-certificates-ref
| +--rw hello-params
| {tls-client-hello-params-config}?
| +--rw tls-versions
| | +--rw tls-version*
| | identityref
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| +--rw cipher-suites
| +--rw cipher-suite*
| identityref
+--ro discontinuity-time? yang:timestamp
+--ro initiate-session? boolean
+--ro session-exists? boolean
+--ro session-up-time? yang:timestamp
+--ro session-fail-time? yang:timestamp
+--ro session-fail-up-time? yang:timestamp
+--ro sessions
+--ro session* [initiator]
+--ro initiator pcep-initiator
+--ro role?
| -> /pcep/entity/role
+--ro state-last-change? yang:timestamp
+--ro state? pcep-sess-state
+--ro session-creation? yang:timestamp
+--ro connect-retry? yang:counter32
+--ro local-id? uint32
+--ro remote-id? uint32
+--ro keepalive-timer? uint32
+--ro peer-keepalive-timer? uint32
+--ro dead-timer? uint32
+--ro peer-dead-timer? uint32
+--ro ka-hold-time-rem? uint32
+--ro overloaded? boolean
+--ro overload-time? uint32
+--ro peer-overloaded? boolean
+--ro peer-overload-time? uint32
+--ro lspdb-sync? sync-state
| {stateful}?
+--ro recv-db-ver? uint64
| {stateful,stateful-sync-opt}?
+--ro of-list {objective-function}?
| +--ro objective-function* [of]
| +--ro of objective-function
+--ro pst-list
| +--ro path-setup-type* [pst]
| +--ro pst pst
+--ro assoc-type-list {association}?
| +--ro assoc-type* [at]
| +--ro at assoc-type
+--ro speaker-entity-id? string
| {stateful-sync-opt}?
+--ro discontinuity-time? yang:timestamp
rpcs:
+---x trigger-resync {stateful,stateful-sync-opt}?
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+---w input
+---w pcc? -> /pcep/entity/peers/peer/addr
notifications:
+---n pcep-session-up
| +--ro peer-addr? -> /pcep/entity/peers/peer/addr
| +--ro session-initiator?
| | -> /pcep/entity/peers/peer/sessions/session/initiator
| +--ro state-last-change? yang:timestamp
| +--ro state? pcep-sess-state
+---n pcep-session-down
| +--ro peer-addr? -> /pcep/entity/peers/peer/addr
| +--ro session-initiator? pcep-initiator
| +--ro state-last-change? yang:timestamp
| +--ro state? pcep-sess-state
+---n pcep-session-local-overload
| +--ro peer-addr? -> /pcep/entity/peers/peer/addr
| +--ro session-initiator?
| | -> /pcep/entity/peers/peer/sessions/session/initiator
| +--ro overloaded? boolean
| +--ro overload-time? uint32
+---n pcep-session-local-overload-clear
| +--ro peer-addr? -> /pcep/entity/peers/peer/addr
| +--ro overloaded? boolean
+---n pcep-session-peer-overload
| +--ro peer-addr? -> /pcep/entity/peers/peer/addr
| +--ro session-initiator?
| | -> /pcep/entity/peers/peer/sessions/session/initiator
| +--ro peer-overloaded? boolean
| +--ro peer-overload-time? uint32
+---n pcep-session-peer-overload-clear
+--ro peer-addr? -> /pcep/entity/peers/peer/addr
+--ro peer-overloaded? boolean
grouping info
+-- domain
| +-- domain* [domain-type domain]
| +-- domain-type? domain-type
| +-- domain? domain
+-- capability
+-- gmpls? boolean {gmpls}?
+-- bi-dir? boolean
+-- diverse? boolean
+-- load-balance? boolean
+-- synchronize? boolean {svec}?
+-- objective-function? boolean {objective-function}?
+-- add-path-constraint? boolean
+-- prioritization? boolean
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+-- multi-request? boolean
+-- gco? boolean {gco}?
+-- p2mp? boolean {p2mp}?
+-- stateful {stateful}?
| +-- enabled? boolean
| +-- active? boolean
| +-- pce-initiated? boolean {pce-initiated}?
| +-- include-db-ver? boolean {stateful-sync-opt}?
| +-- trigger-resync? boolean {stateful-sync-opt}?
| +-- trigger-initial-sync? boolean {stateful-sync-opt}?
| +-- incremental-sync? boolean {stateful-sync-opt}?
+-- sr {sr}?
+-- enabled? boolean
grouping lsp-state
+-- plsp-id? uint32
+-- pcc-id? inet:ip-address
+-- lsp-ref
| +-- source? -> /te:te/lsps-state/lsp/source
| +-- destination?
| | -> /te:te/lsps-state/lsp/destination
| +-- tunnel-id? -> /te:te/lsps-state/lsp/tunnel-id
| +-- lsp-id? -> /te:te/lsps-state/lsp/lsp-id
| +-- extended-tunnel-id?
| -> /te:te/lsps-state/lsp/extended-tunnel-id
+-- admin-state? boolean
+-- operational-state? operational-state
+-- delegated
| +-- enabled? boolean
| +-- peer? -> /pcep/entity/peers/peer/addr
| +-- srp-id? uint32
+-- initiation {pce-initiated}?
| +-- enabled? boolean
| +-- peer? -> /pcep/entity/peers/peer/addr
+-- symbolic-path-name? string
+-- last-error? lsp-error
+-- pst? pst
grouping pce-scope
+-- intra-area-scope? boolean
+-- intra-area-pref? uint8
+-- inter-area-scope? boolean
+-- inter-area-scope-default? boolean
+-- inter-area-pref? uint8
+-- inter-as-scope? boolean
+-- inter-as-scope-default? boolean
+-- inter-as-pref? uint8
+-- inter-layer-scope? boolean
+-- inter-layer-pref? uint8
grouping of-list
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+-- objective-function* [of]
+-- of? objective-function
grouping pst-list
+-- path-setup-type* [pst]
+-- pst? pst
grouping session-grouping
+--ro sessions
+--ro session* [initiator]
+--ro initiator? pcep-initiator
+--ro role? -> /pcep/entity/role
+--ro state-last-change? yang:timestamp
+--ro state? pcep-sess-state
+--ro session-creation? yang:timestamp
+--ro connect-retry? yang:counter32
+--ro local-id? uint32
+--ro remote-id? uint32
+--ro keepalive-timer? uint32
+--ro peer-keepalive-timer? uint32
+--ro dead-timer? uint32
+--ro peer-dead-timer? uint32
+--ro ka-hold-time-rem? uint32
+--ro overloaded? boolean
+--ro overload-time? uint32
+--ro peer-overloaded? boolean
+--ro peer-overload-time? uint32
+--ro lspdb-sync? sync-state {stateful}?
+--ro recv-db-ver? uint64
| {stateful,stateful-sync-opt}?
+--ro of-list {objective-function}?
| +--ro objective-function* [of]
| +--ro of? objective-function
+--ro pst-list
| +--ro path-setup-type* [pst]
| +--ro pst? pst
+--ro assoc-type-list {association}?
| +--ro assoc-type* [at]
| +--ro at? assoc-type
+--ro speaker-entity-id? string {stateful-sync-opt}?
+--ro discontinuity-time? yang:timestamp
grouping pcep-entity-info
+-- connect-timer? uint32
+-- connect-max-retry? uint32
+-- init-backoff-timer? uint32
+-- max-backoff-timer? uint32
+-- open-wait-timer? uint32
+-- keep-wait-timer? uint32
+-- keep-alive-timer? uint32
+-- dead-timer? uint32
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+-- allow-negotiation? boolean
+-- max-keep-alive-timer? uint32
+-- max-dead-timer? uint32
+-- min-keep-alive-timer? uint32
+-- min-dead-timer? uint32
+-- sync-timer? uint32 {svec}?
+-- request-timer? uint32
+-- max-sessions? uint32
+-- max-unknown-reqs? uint32
+-- max-unknown-msgs? uint32
grouping path-key
+-- enabled? boolean
+-- discard-timer? uint32
+-- reuse-time? uint32
+-- pce-id? inet:ip-address
grouping capability
+-- gmpls? boolean {gmpls}?
+-- bi-dir? boolean
+-- diverse? boolean
+-- load-balance? boolean
+-- synchronize? boolean {svec}?
+-- objective-function? boolean {objective-function}?
+-- add-path-constraint? boolean
+-- prioritization? boolean
+-- multi-request? boolean
+-- gco? boolean {gco}?
+-- p2mp? boolean {p2mp}?
+-- stateful {stateful}?
| +-- enabled? boolean
| +-- active? boolean
| +-- pce-initiated? boolean {pce-initiated}?
| +-- include-db-ver? boolean {stateful-sync-opt}?
| +-- trigger-resync? boolean {stateful-sync-opt}?
| +-- trigger-initial-sync? boolean {stateful-sync-opt}?
| +-- incremental-sync? boolean {stateful-sync-opt}?
+-- sr {sr}?
+-- enabled? boolean
grouping path-key-state
+-- path-keys* [path-key]
+-- path-key? uint16
+-- cps
| +-- explicit-route-objects* [index]
| +-- index? uint32
| +-- (type)?