TEAS Working Group X. Liu Internet-Draft Ericsson Intended status: Standards Track I. Bryskin Expires: November 08, 2015 ADVA Optical Networking V. Beeram Juniper Networks T. Saad Cisco Systems Inc. H. Shah Ciena May 08, 2015 YANG Data Model for TE Topologies draft-ietf-teas-yang-te-topo-00 Abstract This document defines a YANG data model for representing and manipulating TE Topologies. 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 http://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 November 08, 2015. Copyright Notice Copyright (c) 2015 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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect Liu, et al. Expires November 08, 2015 [Page 1] Internet-Draft YANG - TE Topology May 2015 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 1.1. Tree Structure - Legend . . . . . . . . . . . . . . . . . 2 1.2. Prefixes in Data Node Names . . . . . . . . . . . . . . . 3 1.3. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4 2. Design Considerations . . . . . . . . . . . . . . . . . . . . 4 2.1. Generic extensible Model . . . . . . . . . . . . . . . . 4 2.1.1. Generic TE Link Attributes . . . . . . . . . . . . . 4 2.1.2. Generic TE Node Attributes . . . . . . . . . . . . . 4 2.1.3. TED Information Sources . . . . . . . . . . . . . . . 4 2.2. Overlay/Underlay Relationship . . . . . . . . . . . . . . 5 2.3. Scheduling Parameters . . . . . . . . . . . . . . . . . . 5 2.4. Abstract TE Topologies . . . . . . . . . . . . . . . . . 5 2.5. Open Items . . . . . . . . . . . . . . . . . . . . . . . 6 3. Tree Structure . . . . . . . . . . . . . . . . . . . . . . . 6 3.1. TE Topology Yang Module . . . . . . . . . . . . . . . . . 29 4. Normative References . . . . . . . . . . . . . . . . . . . . 49 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 49 1. Introduction YANG [RFC6020] a data definition language that was introduced to define the contents of a conceptual data store that allows networked devices to be managed using NETCONF [RFC6241]. YANG is proving relevant beyond its initial confines, as bindings to other interfaces (e.g. ReST) and encoding other than XML (e.g. JSON) are being defined. Furthermore, YANG data models can be used as the basis of implementation for other interface, such as CLI and programmatic APIs. This document defines a YANG data model for representing and manipulating TE Topologies. This model contains technology agnostic TE Topology building blocks that can be augmented and used by other technology-specific TE Topology models. 1.1. Tree Structure - Legend A simplified graphical representation of the data model is presented in Section 3 of this document. The following notations are used for the YANG model data tree representation. Liu, et al. Expires November 08, 2015 [Page 2] Internet-Draft YANG - TE Topology May 2015 is one of: + for current x for deprecated o for obsolete is one of: rw for read-write configuration data ro for read-only non-configuration data -x for execution rpcs -n for notifications is the name of the node If the node is augmented into the tree from another module, its name is printed as : is one of: ? for an optional leaf or node ! for a presence container * for a leaf-list or list Brackets [] for a list's keys Curly braces {} for optional feature that make node conditional Colon : for marking case nodes Ellipses ("...") subtree contents not shown Parentheses enclose choice and case nodes, and case nodes are also marked with a colon (":"). is the name of the type for leafs and leaf-lists. 1.2. Prefixes in Data Node Names In this document, names of data nodes and other data model objects are prefixed using the standard prefix associated with the corresponding YANG imported modules, as shown in Table 1. +--------+-----------------+-----------+ | Prefix | YANG module | Reference | +--------+-----------------+-----------+ | yang | ietf-yang-types | [RFC6991] | | inet | ietf-inet-types | [RFC6991] | +--------+-----------------+-----------+ Table 1: Prefixes and corresponding YANG modules Liu, et al. Expires November 08, 2015 [Page 3] Internet-Draft YANG - TE Topology May 2015 1.3. Terminology In this document, the key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" are to be interpreted as described in BCP 14, RFC 2119 [RFC2119]. 2. Design Considerations 2.1. Generic extensible Model The TE Topology model proposed in this document is meant to be technology agnostic. Other technology specific TE Topology models can augment and use the building blocks provided by the proposed model. 2.1.1. Generic TE Link Attributes The model covers the definitions for generic TE Link attributes - bandwidth, admin groups, SRLGs, switching capabilities, TE metric extensions etc. 2.1.2. Generic TE Node Attributes The model covers the definitions for generic TE Node attributes like connectivity matrix. +--rw connectivity-matrix* [id] +--rw id uint32 +--rw from-link +--rw topo-ref? leafref +--rw node-ref? leafref +--rw link-end-ref? leafref +--rw to-link +--rw topo-ref? leafref +--rw node-ref? leafref +--rw link-end-ref? leafref +--rw is-allowed? Boolean 2.1.3. TED Information Sources The model allows each TE topological element to have multiple TE information sources (OSPF-TE, ISIS-TE, BGP-LS, User-Configured, Other). Each information source is associated with a credibility preference to indicate precedence. The model captures overlay and underlay relationship for TE nodes/ links. For example - in networks where multiple TE Topologies are Liu, et al. Expires November 08, 2015 [Page 4] Internet-Draft YANG - TE Topology May 2015 built hierarchically, this model allows the user to start from a specific topological element in the top most topology and traverse all the way down to the supporting topological elements in the bottom most topology. 2.2. Overlay/Underlay Relationship +--rw node* [te-node-id] : +--rw te-node-attributes : +--rw underlay-topology? leafref {te-topology-hierarchy}? +--rw link* [source-te-node-id source-te-link-id dest-te-node-id dest-te-link-id] : +--rw te-link-attributes +--rw underlay! {te-topology-hierarchy}? +--rw underlay-path : +--rw underlay-backup-path : +--rw underlay-protection-type? uint16 +--rw underlay-trail-src : +--rw underlay-trail-des : 2.3. Scheduling Parameters The model allows time scheduling parameters to be specified for each topological element. These parameters allow the provider to present different topological views to the client at different time slots. +--rw schedules* [schedule-id] | +--rw schedule-id uint32 | +--rw start? yang:date-and-time | +--rw schedule-duration? string | +--rw repeat-interval? string 2.4. Abstract TE Topologies The model allows the provider to present the network in abstract terms on per client basis and facilitates the notion of "TE Topology as a service". These topologies are typically decoupled from the actual network topology and are supposed to be fully comprehensible by the clients and contain sufficient information for the client path Liu, et al. Expires November 08, 2015 [Page 5] Internet-Draft YANG - TE Topology May 2015 computers to select service paths according to the client policies. The model also allows the client to request changes to the abstract TE Topology that is presented to it and thus manipulate it. 2.5. Open Items o Relationship with "generic network topology" model: The generic network topology building blocks are discussed in [YANG-NET-TOPO]. This version of the document does not use any of those building blocks. The authors would like to explore the possibility of doing that in future revisions of this document. o Incremental notifications: The model proposed in this version does not cover incremental notifications. The authors intend to add this in future revisions of the document. 3. Tree Structure module: ietf-te-topology +--rw te-topologies | +--rw topology* [te-topology-id] | | +--rw te-topology-id te-topology-id | | +--rw topology-types | | | +--rw te-topology! | | +--rw node* [te-node-id] | | | +--rw te-node-id te-node-id | | | +--rw te-node-template? leafref | | | +--rw te-node-attributes | | | +--rw schedules* [schedule-id] | | | | +--rw schedule-id uint32 | | | | +--rw start? yang:date-and-time | | | | +--rw schedule-duration? string | | | | +--rw repeat-interval? string | | | +--rw name? inet:domain-name | | | +--rw signaling-address* inet:ip-address | | | +--rw flag* flag-type | | | +--rw is-abstract? boolean | | | +--rw underlay-topology? leafref {te-topology-hierarchy}? | | | +--rw te-link* [te-link-id] | | | | +--rw te-link-id te-link-id | | | | +--rw (stack-level)? | | | | +--:(bundle) | | | | | +--rw bundled-links | | | | | +--rw bundled-link* [sequence] | | | | | +--rw sequence uint32 | | | | | +--rw te-link-ref? leafref | | | | +--:(component) Liu, et al. Expires November 08, 2015 [Page 6] Internet-Draft YANG - TE Topology May 2015 | | | | +--rw component-links | | | | +--rw component-link* [sequence] | | | | +--rw sequence uint32 | | | | +--rw component-link-ref? leafref | | | +--rw connectivity-matrix* [id] | | | | +--rw id uint32 | | | | +--rw from-link | | | | | +--rw topo-ref? leafref | | | | | +--rw node-ref? leafref | | | | | +--rw link-end-ref? leafref | | | | +--rw to-link | | | | | +--rw topo-ref? leafref | | | | | +--rw node-ref? leafref | | | | | +--rw link-end-ref? leafref | | | | +--rw is-allowed? boolean | | | +--rw ted | | | +--rw te-router-id-ipv4? inet:ipv4-address | | | +--rw te-router-id-ipv6? inet:ipv6-address | | | +--rw ipv4-local-address* [ipv4-prefix] | | | | +--rw ipv4-prefix inet:ipv4-prefix | | | +--rw ipv6-local-address* [ipv6-prefix] | | | | +--rw ipv6-prefix inet:ipv6-prefix | | | | +--rw prefix-option? uint8 | | | +--rw pcc-capabilities? pcc-capabilities | | +--rw link* [source-te-node-id source-te-link-id dest-te-node-id dest-te-link-id] | | +--rw source-te-node-id leafref | | +--rw source-te-link-id leafref | | +--rw dest-te-node-id leafref | | +--rw dest-te-link-id leafref | | +--rw te-link-template? leafref | | +--rw te-link-attributes | | +--rw schedules* [schedule-id] | | | +--rw schedule-id uint32 | | | +--rw start? yang:date-and-time | | | +--rw schedule-duration? string | | | +--rw repeat-interval? string | | +--rw name? string | | +--rw flag* flag-type | | +--rw is-abstract? boolean | | +--rw underlay! {te-topology-hierarchy}? | | | +--rw underlay-path | | | | +--rw topology-id? leafref | | | | +--rw path-element* [path-element-id] | | | | +--rw path-element-id uint32 | | | | +--rw loose? boolean | | | | +--rw (element-type)? | | | | +--:(numbered-link) Liu, et al. Expires November 08, 2015 [Page 7] Internet-Draft YANG - TE Topology May 2015 | | | | | +--rw link-ip-address? inet:ip-address | | | | +--:(unnumbered-link) | | | | | +--rw link-node-id? uint32 | | | | | +--rw te-link-id? uint32 | | | | +--:(node) | | | | | +--rw te-node-id? uint32 | | | | +--:(label) | | | | +--rw label? uint32 | | | +--rw underlay-backup-path | | | | +--rw topology-id? leafref | | | | +--rw path-element* [path-element-id] | | | | +--rw path-element-id uint32 | | | | +--rw loose? boolean | | | | +--rw (element-type)? | | | | +--:(numbered-link) | | | | | +--rw link-ip-address? inet:ip-address | | | | +--:(unnumbered-link) | | | | | +--rw link-node-id? uint32 | | | | | +--rw te-link-id? uint32 | | | | +--:(node) | | | | | +--rw te-node-id? uint32 | | | | +--:(label) | | | | +--rw label? uint32 | | | +--rw underlay-protection-type? uint16 | | | +--rw underlay-trail-src | | | | +--rw topo-ref? leafref | | | | +--rw node-ref? leafref | | | | +--rw link-end-ref? leafref | | | +--rw underlay-trail-des | | | +--rw topo-ref? leafref | | | +--rw node-ref? leafref | | | +--rw link-end-ref? leafref | | +--rw ted | | +--rw admin-status? enumeration | | +--rw oper-status? enumeration | | +--rw area-id? binary | | +--rw performance-metric-throttle {te-performance-metric}? | | | +--rw unidirectional-delay-offset? uint32 | | | +--rw measure-interval? uint32 | | | +--rw advertisement-interval? uint32 | | | +--rw suppression-interval? uint32 | | | +--rw threshold-out | | | | +--rw unidirectional-delay? uint32 | | | | +--rw unidirectional-min-delay? uint32 | | | | +--rw unidirectional-max-delay? uint32 | | | | +--rw unidirectional-delay-variation? uint32 | | | | +--rw unidirectional-packet-loss? decimal64 Liu, et al. Expires November 08, 2015 [Page 8] Internet-Draft YANG - TE Topology May 2015 | | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | | +--rw unidirectional-available-bandwidth? decimal64 | | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | | +--rw threshold-in | | | | +--rw unidirectional-delay? uint32 | | | | +--rw unidirectional-min-delay? uint32 | | | | +--rw unidirectional-max-delay? uint32 | | | | +--rw unidirectional-delay-variation? uint32 | | | | +--rw unidirectional-packet-loss? decimal64 | | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | | +--rw unidirectional-available-bandwidth? decimal64 | | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | | +--rw threshold-accelerated-advertisement | | | +--rw unidirectional-delay? uint32 | | | +--rw unidirectional-min-delay? uint32 | | | +--rw unidirectional-max-delay? uint32 | | | +--rw unidirectional-delay-variation? uint32 | | | +--rw unidirectional-packet-loss? decimal64 | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | +--rw unidirectional-available-bandwidth? decimal64 | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | +--rw information-source? enumeration | | +--rw credibility-preference? uint16 | | +--rw link-index? uint64 | | +--rw administrative-group* [sequence] | | | +--rw sequence uint32 | | | +--rw ag-element? uint32 | | +--rw max-link-bandwidth? decimal64 | | +--rw max-resv-link-bandwidth? decimal64 | | +--rw unreserved-bandwidth* [priority] | | | +--rw priority uint8 | | | +--rw bandwidth? decimal64 | | +--rw te-default-metric? uint32 | | +--rw performance-metric {te-performance-metric}? Liu, et al. Expires November 08, 2015 [Page 9] Internet-Draft YANG - TE Topology May 2015 | | | +--rw measurement | | | | +--rw unidirectional-delay? uint32 | | | | +--rw unidirectional-min-delay? uint32 | | | | +--rw unidirectional-max-delay? uint32 | | | | +--rw unidirectional-delay-variation? uint32 | | | | +--rw unidirectional-packet-loss? decimal64 | | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | | +--rw unidirectional-available-bandwidth? decimal64 | | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | | +--rw normality | | | +--rw unidirectional-delay? performance-metric-normality | | | +--rw unidirectional-min-delay? performance-metric-normality | | | +--rw unidirectional-max-delay? performance-metric-normality | | | +--rw unidirectional-delay-variation? performance-metric-normality | | | +--rw unidirectional-packet-loss? performance-metric-normality | | | +--rw unidirectional-residual-bandwidth? performance-metric-normality | | | +--rw unidirectional-available-bandwidth? performance-metric-normality | | | +--rw unidirectional-utilized-bandwidth? performance-metric-normality | | +--rw link-protection-type? enumeration | | +--rw interface-switching-capabilities* [switching-capability] | | | +--rw switching-capability ted:switching-capabilities | | | +--rw encoding? ted:encoding-type | | | +--rw max-lsp-bandwidth* [priority] | | | | +--rw priority uint8 | | | | +--rw bandwidth? decimal64 | | | +--rw packet-switch-capable | | | | +--rw minimum-lsp-bandwidth? decimal64 | | | | +--rw interface-mtu? uint16 | | | +--rw time-division-multiplex-capable | | | +--rw minimum-lsp-bandwidth? decimal64 | | | +--rw indication? enumeration | | +--rw srlg | | | +--rw srlg-values* [srlg-value] Liu, et al. Expires November 08, 2015 [Page 10] Internet-Draft YANG - TE Topology May 2015 | | | +--rw srlg-value uint32 | | +--rw alt-information-sources* [information-source] | | +--rw information-source enumeration | | +--rw credibility-preference? uint16 | | +--rw link-index? uint64 | | +--rw administrative-group* [sequence] | | | +--rw sequence uint32 | | | +--rw ag-element? uint32 | | +--rw max-link-bandwidth? decimal64 | | +--rw max-resv-link-bandwidth? decimal64 | | +--rw unreserved-bandwidth* [priority] | | | +--rw priority uint8 | | | +--rw bandwidth? decimal64 | | +--rw te-default-metric? uint32 | | +--rw performance-metric {te-performance-metric}? | | | +--rw measurement | | | | +--rw unidirectional-delay? uint32 | | | | +--rw unidirectional-min-delay? uint32 | | | | +--rw unidirectional-max-delay? uint32 | | | | +--rw unidirectional-delay-variation? uint32 | | | | +--rw unidirectional-packet-loss? decimal64 | | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | | +--rw unidirectional-available-bandwidth? decimal64 | | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | | +--rw normality | | | +--rw unidirectional-delay? performance-metric-normality | | | +--rw unidirectional-min-delay? performance-metric-normality | | | +--rw unidirectional-max-delay? performance-metric-normality | | | +--rw unidirectional-delay-variation? performance-metric-normality | | | +--rw unidirectional-packet-loss? performance-metric-normality | | | +--rw unidirectional-residual-bandwidth? performance-metric-normality | | | +--rw unidirectional-available-bandwidth? performance-metric-normality | | | +--rw unidirectional-utilized-bandwidth? performance-metric-normality | | +--rw link-protection-type? Liu, et al. Expires November 08, 2015 [Page 11] Internet-Draft YANG - TE Topology May 2015 enumeration | | +--rw interface-switching-capabilities* [switching-capability] | | | +--rw switching-capability ted:switching-capabilities | | | +--rw encoding? ted:encoding-type | | | +--rw max-lsp-bandwidth* [priority] | | | | +--rw priority uint8 | | | | +--rw bandwidth? decimal64 | | | +--rw packet-switch-capable | | | | +--rw minimum-lsp-bandwidth? decimal64 | | | | +--rw interface-mtu? uint16 | | | +--rw time-division-multiplex-capable | | | +--rw minimum-lsp-bandwidth? decimal64 | | | +--rw indication? enumeration | | +--rw srlg | | +--rw srlg-values* [srlg-value] | | +--rw srlg-value uint32 | +--rw node-template* [name] | | +--rw name te-template-name | | +--rw te-node-attributes | | +--rw schedules* [schedule-id] | | | +--rw schedule-id uint32 | | | +--rw start? yang:date-and-time | | | +--rw schedule-duration? string | | | +--rw repeat-interval? string | | +--rw name? inet:domain-name | | +--rw signaling-address* inet:ip-address | | +--rw flag* flag-type | | +--rw is-abstract? boolean | | +--rw underlay-topology? leafref {te-topology-hierarchy}? | | +--rw te-link* [te-link-id] | | | +--rw te-link-id te-link-id | | | +--rw (stack-level)? | | | +--:(bundle) | | | | +--rw bundled-links | | | | +--rw bundled-link* [sequence] | | | | +--rw sequence uint32 | | | | +--rw te-link-ref? leafref | | | +--:(component) | | | +--rw component-links | | | +--rw component-link* [sequence] | | | +--rw sequence uint32 | | | +--rw component-link-ref? leafref | | +--rw connectivity-matrix* [id] | | | +--rw id uint32 Liu, et al. Expires November 08, 2015 [Page 12] Internet-Draft YANG - TE Topology May 2015 | | | +--rw from-link | | | | +--rw topo-ref? leafref | | | | +--rw node-ref? leafref | | | | +--rw link-end-ref? leafref | | | +--rw to-link | | | | +--rw topo-ref? leafref | | | | +--rw node-ref? leafref | | | | +--rw link-end-ref? leafref | | | +--rw is-allowed? boolean | | +--rw ted | | +--rw te-router-id-ipv4? inet:ipv4-address | | +--rw te-router-id-ipv6? inet:ipv6-address | | +--rw ipv4-local-address* [ipv4-prefix] | | | +--rw ipv4-prefix inet:ipv4-prefix | | +--rw ipv6-local-address* [ipv6-prefix] | | | +--rw ipv6-prefix inet:ipv6-prefix | | | +--rw prefix-option? uint8 | | +--rw pcc-capabilities? pcc-capabilities | +--rw link-template* [name] | +--rw name te-template-name | +--rw te-link-attributes | +--rw schedules* [schedule-id] | | +--rw schedule-id uint32 | | +--rw start? yang:date-and-time | | +--rw schedule-duration? string | | +--rw repeat-interval? string | +--rw name? string | +--rw flag* flag-type | +--rw is-abstract? boolean | +--rw underlay! {te-topology-hierarchy}? | | +--rw underlay-path | | | +--rw topology-id? leafref | | | +--rw path-element* [path-element-id] | | | +--rw path-element-id uint32 | | | +--rw loose? boolean | | | +--rw (element-type)? | | | +--:(numbered-link) | | | | +--rw link-ip-address? inet:ip-address | | | +--:(unnumbered-link) | | | | +--rw link-node-id? uint32 | | | | +--rw te-link-id? uint32 | | | +--:(node) | | | | +--rw te-node-id? uint32 | | | +--:(label) | | | +--rw label? uint32 | | +--rw underlay-backup-path | | | +--rw topology-id? leafref | | | +--rw path-element* [path-element-id] Liu, et al. Expires November 08, 2015 [Page 13] Internet-Draft YANG - TE Topology May 2015 | | | +--rw path-element-id uint32 | | | +--rw loose? boolean | | | +--rw (element-type)? | | | +--:(numbered-link) | | | | +--rw link-ip-address? inet:ip-address | | | +--:(unnumbered-link) | | | | +--rw link-node-id? uint32 | | | | +--rw te-link-id? uint32 | | | +--:(node) | | | | +--rw te-node-id? uint32 | | | +--:(label) | | | +--rw label? uint32 | | +--rw underlay-protection-type? uint16 | | +--rw underlay-trail-src | | | +--rw topo-ref? leafref | | | +--rw node-ref? leafref | | | +--rw link-end-ref? leafref | | +--rw underlay-trail-des | | +--rw topo-ref? leafref | | +--rw node-ref? leafref | | +--rw link-end-ref? leafref | +--rw ted | +--rw admin-status? enumeration | +--rw oper-status? enumeration | +--rw area-id? binary | +--rw performance-metric-throttle {te-performance-metric}? | | +--rw unidirectional-delay-offset? uint32 | | +--rw measure-interval? uint32 | | +--rw advertisement-interval? uint32 | | +--rw suppression-interval? uint32 | | +--rw threshold-out | | | +--rw unidirectional-delay? uint32 | | | +--rw unidirectional-min-delay? uint32 | | | +--rw unidirectional-max-delay? uint32 | | | +--rw unidirectional-delay-variation? uint32 | | | +--rw unidirectional-packet-loss? decimal64 | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | +--rw unidirectional-available-bandwidth? decimal64 | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | +--rw threshold-in | | | +--rw unidirectional-delay? uint32 | | | +--rw unidirectional-min-delay? uint32 | | | +--rw unidirectional-max-delay? uint32 | | | +--rw unidirectional-delay-variation? uint32 Liu, et al. Expires November 08, 2015 [Page 14] Internet-Draft YANG - TE Topology May 2015 | | | +--rw unidirectional-packet-loss? decimal64 | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | +--rw unidirectional-available-bandwidth? decimal64 | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | +--rw threshold-accelerated-advertisement | | +--rw unidirectional-delay? uint32 | | +--rw unidirectional-min-delay? uint32 | | +--rw unidirectional-max-delay? uint32 | | +--rw unidirectional-delay-variation? uint32 | | +--rw unidirectional-packet-loss? decimal64 | | +--rw unidirectional-residual-bandwidth? decimal64 | | +--rw unidirectional-available-bandwidth? decimal64 | | +--rw unidirectional-utilized-bandwidth? decimal64 | +--rw information-source? enumeration | +--rw credibility-preference? uint16 | +--rw link-index? uint64 | +--rw administrative-group* [sequence] | | +--rw sequence uint32 | | +--rw ag-element? uint32 | +--rw max-link-bandwidth? decimal64 | +--rw max-resv-link-bandwidth? decimal64 | +--rw unreserved-bandwidth* [priority] | | +--rw priority uint8 | | +--rw bandwidth? decimal64 | +--rw te-default-metric? uint32 | +--rw performance-metric {te-performance-metric}? | | +--rw measurement | | | +--rw unidirectional-delay? uint32 | | | +--rw unidirectional-min-delay? uint32 | | | +--rw unidirectional-max-delay? uint32 | | | +--rw unidirectional-delay-variation? uint32 | | | +--rw unidirectional-packet-loss? decimal64 | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | +--rw unidirectional-available-bandwidth? decimal64 | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | +--rw normality | | +--rw unidirectional-delay? performance-metric-normality | | +--rw unidirectional-min-delay? Liu, et al. Expires November 08, 2015 [Page 15] Internet-Draft YANG - TE Topology May 2015 performance-metric-normality | | +--rw unidirectional-max-delay? performance-metric-normality | | +--rw unidirectional-delay-variation? performance-metric-normality | | +--rw unidirectional-packet-loss? performance-metric-normality | | +--rw unidirectional-residual-bandwidth? performance-metric-normality | | +--rw unidirectional-available-bandwidth? performance-metric-normality | | +--rw unidirectional-utilized-bandwidth? performance-metric-normality | +--rw link-protection-type? enumeration | +--rw interface-switching-capabilities* [switching-capability] | | +--rw switching-capability ted:switching-capabilities | | +--rw encoding? ted:encoding-type | | +--rw max-lsp-bandwidth* [priority] | | | +--rw priority uint8 | | | +--rw bandwidth? decimal64 | | +--rw packet-switch-capable | | | +--rw minimum-lsp-bandwidth? decimal64 | | | +--rw interface-mtu? uint16 | | +--rw time-division-multiplex-capable | | +--rw minimum-lsp-bandwidth? decimal64 | | +--rw indication? enumeration | +--rw srlg | | +--rw srlg-values* [srlg-value] | | +--rw srlg-value uint32 | +--rw alt-information-sources* [information-source] | +--rw information-source enumeration | +--rw credibility-preference? uint16 | +--rw link-index? uint64 | +--rw administrative-group* [sequence] | | +--rw sequence uint32 | | +--rw ag-element? uint32 | +--rw max-link-bandwidth? decimal64 | +--rw max-resv-link-bandwidth? decimal64 | +--rw unreserved-bandwidth* [priority] | | +--rw priority uint8 | | +--rw bandwidth? decimal64 | +--rw te-default-metric? uint32 | +--rw performance-metric {te-performance-metric}? | | +--rw measurement | | | +--rw unidirectional-delay? uint32 | | | +--rw unidirectional-min-delay? uint32 Liu, et al. Expires November 08, 2015 [Page 16] Internet-Draft YANG - TE Topology May 2015 | | | +--rw unidirectional-max-delay? uint32 | | | +--rw unidirectional-delay-variation? uint32 | | | +--rw unidirectional-packet-loss? decimal64 | | | +--rw unidirectional-residual-bandwidth? decimal64 | | | +--rw unidirectional-available-bandwidth? decimal64 | | | +--rw unidirectional-utilized-bandwidth? decimal64 | | +--rw normality | | +--rw unidirectional-delay? performance-metric-normality | | +--rw unidirectional-min-delay? performance-metric-normality | | +--rw unidirectional-max-delay? performance-metric-normality | | +--rw unidirectional-delay-variation? performance-metric-normality | | +--rw unidirectional-packet-loss? performance-metric-normality | | +--rw unidirectional-residual-bandwidth? performance-metric-normality | | +--rw unidirectional-available-bandwidth? performance-metric-normality | | +--rw unidirectional-utilized-bandwidth? performance-metric-normality | +--rw link-protection-type? enumeration | +--rw interface-switching-capabilities* [switching-capability] | | +--rw switching-capability ted:switching-capabilities | | +--rw encoding? ted:encoding-type | | +--rw max-lsp-bandwidth* [priority] | | | +--rw priority uint8 | | | +--rw bandwidth? decimal64 | | +--rw packet-switch-capable | | | +--rw minimum-lsp-bandwidth? decimal64 | | | +--rw interface-mtu? uint16 | | +--rw time-division-multiplex-capable | | +--rw minimum-lsp-bandwidth? decimal64 | | +--rw indication? enumeration | +--rw srlg | +--rw srlg-values* [srlg-value] | +--rw srlg-value uint32 +--ro te-topologies-state +--ro topology* [te-topology-id] +--ro te-topology-id te-topology-id +--ro server-provided? boolean Liu, et al. Expires November 08, 2015 [Page 17] Internet-Draft YANG - TE Topology May 2015 +--ro topology-types | +--ro te-topology! +--ro node* [te-node-id] | +--ro te-node-id te-node-id | +--ro te-node-template? leafref | +--ro te-node-attributes | | +--ro schedules* [schedule-id] | | | +--ro schedule-id uint32 | | | +--ro start? yang:date-and-time | | | +--ro schedule-duration? string | | | +--ro repeat-interval? string | | +--ro name? inet:domain-name | | +--ro signaling-address* inet:ip-address | | +--ro flag* flag-type | | +--ro is-abstract? boolean | | +--ro underlay-topology? leafref {te-topology-hierarchy}? | | +--ro te-link* [te-link-id] | | | +--ro te-link-id te-link-id | | | +--ro (stack-level)? | | | +--:(bundle) | | | | +--ro bundled-links | | | | +--ro bundled-link* [sequence] | | | | +--ro sequence uint32 | | | | +--ro te-link-ref? leafref | | | +--:(component) | | | +--ro component-links | | | +--ro component-link* [sequence] | | | +--ro sequence uint32 | | | +--ro component-link-ref? leafref | | +--ro connectivity-matrix* [id] | | | +--ro id uint32 | | | +--ro from-link | | | | +--ro topo-ref? leafref | | | | +--ro node-ref? leafref | | | | +--ro link-end-ref? leafref | | | +--ro to-link | | | | +--ro topo-ref? leafref | | | | +--ro node-ref? leafref | | | | +--ro link-end-ref? leafref | | | +--ro is-allowed? boolean | | +--ro ted | | +--ro te-router-id-ipv4? inet:ipv4-address | | +--ro te-router-id-ipv6? inet:ipv6-address | | +--ro ipv4-local-address* [ipv4-prefix] | | | +--ro ipv4-prefix inet:ipv4-prefix | | +--ro ipv6-local-address* [ipv6-prefix] | | | +--ro ipv6-prefix inet:ipv6-prefix Liu, et al. Expires November 08, 2015 [Page 18] Internet-Draft YANG - TE Topology May 2015 | | | +--ro prefix-option? uint8 | | +--ro pcc-capabilities? pcc-capabilities | +--ro te-node-state-attributes | +--ro information-source? enumeration | +--ro credibility-preference? uint16 +--ro link* [source-te-node-id source-te-link-id dest-te-node-id dest-te-link-id] +--ro source-te-node-id leafref +--ro source-te-link-id leafref +--ro dest-te-node-id leafref +--ro dest-te-link-id leafref +--ro te-link-template? leafref +--ro te-link-attributes | +--ro schedules* [schedule-id] | | +--ro schedule-id uint32 | | +--ro start? yang:date-and-time | | +--ro schedule-duration? string | | +--ro repeat-interval? string | +--ro name? string | +--ro flag* flag-type | +--ro is-abstract? boolean | +--ro underlay! {te-topology-hierarchy}? | | +--ro underlay-path | | | +--ro topology-id? leafref | | | +--ro path-element* [path-element-id] | | | +--ro path-element-id uint32 | | | +--ro loose? boolean | | | +--ro (element-type)? | | | +--:(numbered-link) | | | | +--ro link-ip-address? inet:ip-address | | | +--:(unnumbered-link) | | | | +--ro link-node-id? uint32 | | | | +--ro te-link-id? uint32 | | | +--:(node) | | | | +--ro te-node-id? uint32 | | | +--:(label) | | | +--ro label? uint32 | | +--ro underlay-backup-path | | | +--ro topology-id? leafref | | | +--ro path-element* [path-element-id] | | | +--ro path-element-id uint32 | | | +--ro loose? boolean | | | +--ro (element-type)? | | | +--:(numbered-link) | | | | +--ro link-ip-address? inet:ip-address | | | +--:(unnumbered-link) | | | | +--ro link-node-id? uint32 | | | | +--ro te-link-id? uint32 Liu, et al. Expires November 08, 2015 [Page 19] Internet-Draft YANG - TE Topology May 2015 | | | +--:(node) | | | | +--ro te-node-id? uint32 | | | +--:(label) | | | +--ro label? uint32 | | +--ro underlay-protection-type? uint16 | | +--ro underlay-trail-src | | | +--ro topo-ref? leafref | | | +--ro node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro underlay-trail-des | | | +--ro topo-ref? leafref | | | +--ro node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro dynamic? boolean | | +--ro committed? boolean | +--ro ted | +--ro admin-status? enumeration | +--ro oper-status? enumeration | +--ro area-id? binary | +--ro performance-metric-throttle {te-performance-metric}? | | +--ro unidirectional-delay-offset? uint32 | | +--ro measure-interval? uint32 | | +--ro advertisement-interval? uint32 | | +--ro suppression-interval? uint32 | | +--ro threshold-out | | | +--ro unidirectional-delay? uint32 | | | +--ro unidirectional-min-delay? uint32 | | | +--ro unidirectional-max-delay? uint32 | | | +--ro unidirectional-delay-variation? uint32 | | | +--ro unidirectional-packet-loss? decimal64 | | | +--ro unidirectional-residual-bandwidth? decimal64 | | | +--ro unidirectional-available-bandwidth? decimal64 | | | +--ro unidirectional-utilized-bandwidth? decimal64 | | +--ro threshold-in | | | +--ro unidirectional-delay? uint32 | | | +--ro unidirectional-min-delay? uint32 | | | +--ro unidirectional-max-delay? uint32 | | | +--ro unidirectional-delay-variation? uint32 | | | +--ro unidirectional-packet-loss? decimal64 | | | +--ro unidirectional-residual-bandwidth? decimal64 | | | +--ro unidirectional-available-bandwidth? decimal64 | | | +--ro unidirectional-utilized-bandwidth? Liu, et al. Expires November 08, 2015 [Page 20] Internet-Draft YANG - TE Topology May 2015 decimal64 | | +--ro threshold-accelerated-advertisement | | +--ro unidirectional-delay? uint32 | | +--ro unidirectional-min-delay? uint32 | | +--ro unidirectional-max-delay? uint32 | | +--ro unidirectional-delay-variation? uint32 | | +--ro unidirectional-packet-loss? decimal64 | | +--ro unidirectional-residual-bandwidth? decimal64 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 | +--ro information-source? enumeration | +--ro credibility-preference? uint16 | +--ro link-index? uint64 | +--ro administrative-group* [sequence] | | +--ro sequence uint32 | | +--ro ag-element? uint32 | +--ro max-link-bandwidth? decimal64 | +--ro max-resv-link-bandwidth? decimal64 | +--ro unreserved-bandwidth* [priority] | | +--ro priority uint8 | | +--ro bandwidth? decimal64 | +--ro te-default-metric? uint32 | +--ro performance-metric {te-performance-metric}? | | +--ro measurement | | | +--ro unidirectional-delay? uint32 | | | +--ro unidirectional-min-delay? uint32 | | | +--ro unidirectional-max-delay? uint32 | | | +--ro unidirectional-delay-variation? uint32 | | | +--ro unidirectional-packet-loss? decimal64 | | | +--ro unidirectional-residual-bandwidth? decimal64 | | | +--ro unidirectional-available-bandwidth? decimal64 | | | +--ro unidirectional-utilized-bandwidth? decimal64 | | +--ro normality | | +--ro unidirectional-delay? performance-metric-normality | | +--ro unidirectional-min-delay? performance-metric-normality | | +--ro unidirectional-max-delay? performance-metric-normality | | +--ro unidirectional-delay-variation? performance-metric-normality | | +--ro unidirectional-packet-loss? Liu, et al. Expires November 08, 2015 [Page 21] Internet-Draft YANG - TE Topology May 2015 performance-metric-normality | | +--ro unidirectional-residual-bandwidth? performance-metric-normality | | +--ro unidirectional-available-bandwidth? performance-metric-normality | | +--ro unidirectional-utilized-bandwidth? performance-metric-normality | +--ro link-protection-type? enumeration | +--ro interface-switching-capabilities* [switching-capability] | | +--ro switching-capability ted:switching-capabilities | | +--ro encoding? ted:encoding-type | | +--ro max-lsp-bandwidth* [priority] | | | +--ro priority uint8 | | | +--ro bandwidth? decimal64 | | +--ro packet-switch-capable | | | +--ro minimum-lsp-bandwidth? decimal64 | | | +--ro interface-mtu? uint16 | | +--ro time-division-multiplex-capable | | +--ro minimum-lsp-bandwidth? decimal64 | | +--ro indication? enumeration | +--ro srlg | | +--ro srlg-values* [srlg-value] | | +--ro srlg-value uint32 | +--ro alt-information-sources* [information-source] | +--ro information-source enumeration | +--ro credibility-preference? uint16 | +--ro link-index? uint64 | +--ro administrative-group* [sequence] | | +--ro sequence uint32 | | +--ro ag-element? uint32 | +--ro max-link-bandwidth? decimal64 | +--ro max-resv-link-bandwidth? decimal64 | +--ro unreserved-bandwidth* [priority] | | +--ro priority uint8 | | +--ro bandwidth? decimal64 | +--ro te-default-metric? uint32 | +--ro performance-metric {te-performance-metric}? | | +--ro measurement | | | +--ro unidirectional-delay? uint32 | | | +--ro unidirectional-min-delay? uint32 | | | +--ro unidirectional-max-delay? uint32 | | | +--ro unidirectional-delay-variation? uint32 | | | +--ro unidirectional-packet-loss? Liu, et al. Expires November 08, 2015 [Page 22] Internet-Draft YANG - TE Topology May 2015 decimal64 | | | +--ro unidirectional-residual-bandwidth? decimal64 | | | +--ro unidirectional-available-bandwidth? decimal64 | | | +--ro unidirectional-utilized-bandwidth? decimal64 | | +--ro normality | | +--ro unidirectional-delay? performance-metric-normality | | +--ro unidirectional-min-delay? performance-metric-normality | | +--ro unidirectional-max-delay? performance-metric-normality | | +--ro unidirectional-delay-variation? performance-metric-normality | | +--ro unidirectional-packet-loss? performance-metric-normality | | +--ro unidirectional-residual-bandwidth? performance-metric-normality | | +--ro unidirectional-available-bandwidth? performance-metric-normality | | +--ro unidirectional-utilized-bandwidth? performance-metric-normality | +--ro link-protection-type? enumeration | +--ro interface-switching-capabilities* [switching-capability] | | +--ro switching-capability ted:switching-capabilities | | +--ro encoding? ted:encoding-type | | +--ro max-lsp-bandwidth* [priority] | | | +--ro priority uint8 | | | +--ro bandwidth? decimal64 | | +--ro packet-switch-capable | | | +--ro minimum-lsp-bandwidth? decimal64 | | | +--ro interface-mtu? uint16 | | +--ro time-division-multiplex-capable | | +--ro minimum-lsp-bandwidth? decimal64 | | +--ro indication? enumeration | +--ro srlg | +--ro srlg-values* [srlg-value] | +--ro srlg-value uint32 +--ro te-link-state-attributes +--ro information-source? enumeration +--ro credibility-preference? uint16 notifications: +---n te-node-event | +--ro event-type? te-topology-event-type Liu, et al. Expires November 08, 2015 [Page 23] Internet-Draft YANG - TE Topology May 2015 | +--ro topo-ref? leafref | +--ro node-ref? leafref | +--ro te-topology! | +--ro te-node-attributes | +--ro schedules* [schedule-id] | | +--ro schedule-id uint32 | | +--ro start? yang:date-and-time | | +--ro schedule-duration? string | | +--ro repeat-interval? string | +--ro name? inet:domain-name | +--ro signaling-address* inet:ip-address | +--ro flag* flag-type | +--ro is-abstract? boolean | +--ro underlay-topology? leafref {te-topology-hierarchy}? | +--ro te-link* [te-link-id] | | +--ro te-link-id te-link-id | | +--ro (stack-level)? | | +--:(bundle) | | | +--ro bundled-links | | | +--ro bundled-link* [sequence] | | | +--ro sequence uint32 | | | +--ro te-link-ref? leafref | | +--:(component) | | +--ro component-links | | +--ro component-link* [sequence] | | +--ro sequence uint32 | | +--ro component-link-ref? leafref | +--ro connectivity-matrix* [id] | | +--ro id uint32 | | +--ro from-link | | | +--ro topo-ref? leafref | | | +--ro node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro to-link | | | +--ro topo-ref? leafref | | | +--ro node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro is-allowed? boolean | +--ro ted | +--ro te-router-id-ipv4? inet:ipv4-address | +--ro te-router-id-ipv6? inet:ipv6-address | +--ro ipv4-local-address* [ipv4-prefix] | | +--ro ipv4-prefix inet:ipv4-prefix | +--ro ipv6-local-address* [ipv6-prefix] | | +--ro ipv6-prefix inet:ipv6-prefix | | +--ro prefix-option? uint8 | +--ro pcc-capabilities? pcc-capabilities +---n te-link-event Liu, et al. Expires November 08, 2015 [Page 24] Internet-Draft YANG - TE Topology May 2015 +--ro event-type? te-topology-event-type +--ro topo-ref? leafref +--ro source-te-node-id-ref? leafref +--ro source-te-link-id-ref? leafref +--ro dest-te-node-id-ref? leafref +--ro dest-te-link-id-ref? leafref +--ro te-topology! +--ro te-link-attributes +--ro schedules* [schedule-id] | +--ro schedule-id uint32 | +--ro start? yang:date-and-time | +--ro schedule-duration? string | +--ro repeat-interval? string +--ro name? string +--ro flag* flag-type +--ro is-abstract? boolean +--ro underlay! {te-topology-hierarchy}? | +--ro underlay-path | | +--ro topology-id? leafref | | +--ro path-element* [path-element-id] | | +--ro path-element-id uint32 | | +--ro loose? boolean | | +--ro (element-type)? | | +--:(numbered-link) | | | +--ro link-ip-address? inet:ip-address | | +--:(unnumbered-link) | | | +--ro link-node-id? uint32 | | | +--ro te-link-id? uint32 | | +--:(node) | | | +--ro te-node-id? uint32 | | +--:(label) | | +--ro label? uint32 | +--ro underlay-backup-path | | +--ro topology-id? leafref | | +--ro path-element* [path-element-id] | | +--ro path-element-id uint32 | | +--ro loose? boolean | | +--ro (element-type)? | | +--:(numbered-link) | | | +--ro link-ip-address? inet:ip-address | | +--:(unnumbered-link) | | | +--ro link-node-id? uint32 | | | +--ro te-link-id? uint32 | | +--:(node) | | | +--ro te-node-id? uint32 | | +--:(label) | | +--ro label? uint32 | +--ro underlay-protection-type? uint16 Liu, et al. Expires November 08, 2015 [Page 25] Internet-Draft YANG - TE Topology May 2015 | +--ro underlay-trail-src | | +--ro topo-ref? leafref | | +--ro node-ref? leafref | | +--ro link-end-ref? leafref | +--ro underlay-trail-des | | +--ro topo-ref? leafref | | +--ro node-ref? leafref | | +--ro link-end-ref? leafref | +--ro dynamic? boolean | +--ro committed? boolean +--ro ted +--ro admin-status? enumeration +--ro oper-status? enumeration +--ro area-id? binary +--ro performance-metric-throttle{te-performance-metric}? | +--ro unidirectional-delay-offset? uint32 | +--ro measure-interval? uint32 | +--ro advertisement-interval? uint32 | +--ro suppression-interval? uint32 | +--ro threshold-out | | +--ro unidirectional-delay? uint32 | | +--ro unidirectional-min-delay? uint32 | | +--ro unidirectional-max-delay? uint32 | | +--ro unidirectional-delay-variation? uint32 | | +--ro unidirectional-packet-loss? decimal64 | | +--ro unidirectional-residual-bandwidth? decimal64 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 | +--ro threshold-in | | +--ro unidirectional-delay? uint32 | | +--ro unidirectional-min-delay? uint32 | | +--ro unidirectional-max-delay? uint32 | | +--ro unidirectional-delay-variation? uint32 | | +--ro unidirectional-packet-loss? decimal64 | | +--ro unidirectional-residual-bandwidth? decimal64 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 | +--ro threshold-accelerated-advertisement | +--ro unidirectional-delay? uint32 | +--ro unidirectional-min-delay? uint32 | +--ro unidirectional-max-delay? uint32 | +--ro unidirectional-delay-variation? uint32 | +--ro unidirectional-packet-loss? decimal64 | +--ro unidirectional-residual-bandwidth? decimal64 Liu, et al. Expires November 08, 2015 [Page 26] Internet-Draft YANG - TE Topology May 2015 | +--ro unidirectional-available-bandwidth? decimal64 | +--ro unidirectional-utilized-bandwidth? decimal64 +--ro information-source? enumeration +--ro credibility-preference? uint16 +--ro link-index? uint64 +--ro administrative-group* [sequence] | +--ro sequence uint32 | +--ro ag-element? uint32 +--ro max-link-bandwidth? decimal64 +--ro max-resv-link-bandwidth? decimal64 +--ro unreserved-bandwidth* [priority] | +--ro priority uint8 | +--ro bandwidth? decimal64 +--ro te-default-metric? uint32 +--ro performance-metric {te-performance-metric}? | +--ro measurement | | +--ro unidirectional-delay? uint32 | | +--ro unidirectional-min-delay? uint32 | | +--ro unidirectional-max-delay? uint32 | | +--ro unidirectional-delay-variation? uint32 | | +--ro unidirectional-packet-loss? decimal64 | | +--ro unidirectional-residual-bandwidth? decimal64 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 | +--ro normality | +--ro unidirectional-delay? performance-metric-normality | +--ro unidirectional-min-delay? performance-metric-normality | +--ro unidirectional-max-delay? performance-metric-normality | +--ro unidirectional-delay-variation? performance-metric-normality | +--ro unidirectional-packet-loss? performance-metric-normality | +--ro unidirectional-residual-bandwidth? performance-metric-normality | +--ro unidirectional-available-bandwidth? performance-metric-normality | +--ro unidirectional-utilized-bandwidth? performance-metric-normality +--ro link-protection-type? enumeration +--ro interface-switching-capabilities* [switching-capability] | +--ro switching-capability ted:switching-capabilities | +--ro encoding? ted:encoding-type | +--ro max-lsp-bandwidth* [priority] | | +--ro priority uint8 Liu, et al. Expires November 08, 2015 [Page 27] Internet-Draft YANG - TE Topology May 2015 | | +--ro bandwidth? decimal64 | +--ro packet-switch-capable | | +--ro minimum-lsp-bandwidth? decimal64 | | +--ro interface-mtu? uint16 | +--ro time-division-multiplex-capable | +--ro minimum-lsp-bandwidth? decimal64 | +--ro indication? enumeration +--ro srlg | +--ro srlg-values* [srlg-value] | +--ro srlg-value uint32 +--ro alt-information-sources* [information-source] +--ro information-source enumeration +--ro credibility-preference? uint16 +--ro link-index? uint64 +--ro administrative-group* [sequence] | +--ro sequence uint32 | +--ro ag-element? uint32 +--ro max-link-bandwidth? decimal64 +--ro max-resv-link-bandwidth? decimal64 +--ro unreserved-bandwidth* [priority] | +--ro priority uint8 | +--ro bandwidth? decimal64 +--ro te-default-metric? uint32 +--ro performance-metric {te-performance-metric}? | +--ro measurement | | +--ro unidirectional-delay? uint32 | | +--ro unidirectional-min-delay? uint32 | | +--ro unidirectional-max-delay? uint32 | | +--ro unidirectional-delay-variation? uint32 | | +--ro unidirectional-packet-loss? decimal64 | | +--ro unidirectional-residual-bandwidth? decimal64 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 | +--ro normality | +--ro unidirectional-delay? performance-metric-normality | +--ro unidirectional-min-delay? performance-metric-normality | +--ro unidirectional-max-delay? performance-metric-normality | +--ro unidirectional-delay-variation? performance-metric-normality | +--ro unidirectional-packet-loss? performance-metric-normality | +--ro unidirectional-residual-bandwidth? Liu, et al. Expires November 08, 2015 [Page 28] Internet-Draft YANG - TE Topology May 2015 performance-metric-normality | +--ro unidirectional-available-bandwidth? performance-metric-normality | +--ro unidirectional-utilized-bandwidth? performance-metric-normality +--ro link-protection-type? enumeration +--ro interface-switching-capabilities* [switching-capability] | +--ro switching-capability ted:switching-capabilities | +--ro encoding? ted:encoding-type | +--ro max-lsp-bandwidth* [priority] | | +--ro priority uint8 | | +--ro bandwidth? decimal64 | +--ro packet-switch-capable | | +--ro minimum-lsp-bandwidth? decimal64 | | +--ro interface-mtu? uint16 | +--ro time-division-multiplex-capable | +--ro minimum-lsp-bandwidth? decimal64 | +--ro indication? enumeration +--ro srlg +--ro srlg-values* [srlg-value] +--ro srlg-value uint32 3.1. TE Topology Yang Module file "ietf-te-topology@2015-03-23.yang" module ietf-te-topology { yang-version 1; namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology"; // replace with IANA namespace when assigned prefix "tet"; import ietf-yang-types { prefix "yang"; } import ietf-inet-types { prefix "inet"; } import ted { prefix "ted"; } import ietf-interfaces { Liu, et al. Expires November 08, 2015 [Page 29] Internet-Draft YANG - TE Topology May 2015 prefix "if"; } organization "TBD"; contact "TBD"; description "TE topology model"; revision "2015-03-23" { description "Initial revision"; reference "TBD"; } /* * Features */ feature te-topology-hierarchy { description "This feature indicates that the system allows underlay and/or overlay TE topology hierarchy."; } /* * Typedefs */ typedef te-topology-id { type string { pattern '/?([a-zA-Z0-9\-_.]+)(/[a-zA-Z0-9\-_.]+)*'; } description "An identifier for a topology."; } typedef te-template-name { type string { pattern '/?([a-zA-Z0-9\-_.]+)(/[a-zA-Z0-9\-_.]+)*'; } description "A type for the name of a TE node template or TE link template."; } typedef te-node-id { type inet:ip-address; description "An identifier for a node in a topology. The identifier is represented as an IPv4 or IPv6 address. Liu, et al. Expires November 08, 2015 [Page 30] Internet-Draft YANG - TE Topology May 2015 The identifier SHOULD be chosen such that the same node in a real network topology will always be identified through the same identifier, even if the model is instantiated in separate datastores. An implementation MAY choose to capture semantics in the identifier, for example to indicate the type of node and/or the type of topology that the node is a part of."; } typedef te-link-id { type union { type uint32; // Unnumbered type inet:ip-address; // IPv4 or IPv6 address } description "An identifier for a TE link on a node. The identifier may be opaque. The identifier SHOULD be chosen such that the same TP in a real network topology will always be identified through the same identifier, even if the model is instantiated in separate datastores. An implementation MAY choose to capture semantics in the identifier, for example to indicate the type of TP and/or the type of node and topology that the TP is a part of."; } typedef te-topology-event-type { type enumeration { enum "add" { value 0; description "A TE node or te-link has been added"; } enum "remove" { value 1; description "A TE node or te-link has been removed"; } enum "update" { value 2; description "A TE node or te-link has been updated"; } } Liu, et al. Expires November 08, 2015 [Page 31] Internet-Draft YANG - TE Topology May 2015 description "TE Event type for notifications"; } // te-topology-event-type /* * Identities */ identity flag-identity { description "Base type for flags"; } identity undefined-flag { base "flag-identity"; description "Undefined flag"; } typedef flag-type { type identityref { base "flag-identity"; } description "Type for flags"; } /* * Groupings */ grouping topo-ref { description "Grouping for an absolute reference to a topology instance."; leaf topo-ref { type leafref { path "/tet:te-topologies/tet:topology/tet:te-topology-id"; } description "An absolute reference to a topology instance."; } } grouping link-ref { description "Grouping for an absolute reference to a link instance."; uses topo-ref; leaf source-te-node-id-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:link/tet:source-te-node-id"; Liu, et al. Expires November 08, 2015 [Page 32] Internet-Draft YANG - TE Topology May 2015 } description "An absolute reference to a link instance."; } leaf source-te-link-id-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:link/tet:source-te-link-id"; } description "An absolute reference to a link instance."; } leaf dest-te-node-id-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:link/tet:dest-te-node-id"; } description "An absolute reference to a link instance."; } leaf dest-te-link-id-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:link/tet:dest-te-link-id"; } description "An absolute reference to a link instance."; } } grouping node-ref { description "Grouping for an absolute reference to a node instance."; uses topo-ref; leaf node-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:node/tet:te-node-id"; } description "An absolute reference to a node instance."; } } Liu, et al. Expires November 08, 2015 [Page 33] Internet-Draft YANG - TE Topology May 2015 grouping link-end-ref { description "Grouping for an absolute reference to a TE link end, which is the local representation of a TE link on a node."; uses node-ref; leaf link-end-ref { type leafref { path "/tet:te-topologies/tet:topology" +"[tet:te-topology-id = current()/../topo-ref]" +"/tet:node[tet:te-node-id = current()/../node-ref]" +"/tet:te-node-attributes/tet:te-link/tet:te-link-id"; } description "Grouping for an absolute reference to a TE link end."; } } grouping te-topology-type { description "Identifies the TE topology type."; container te-topology { presence "indicates TE topology"; description "Its presence identifies the TE topology type."; } } grouping te-path-element { description "A group of attributes defining an element in a TE path such as TE node, TE link, TE aotomic resource or label."; leaf loose { type boolean; description "true if the element is loose."; } choice element-type { description "Attributes for various element types."; case numbered-link { leaf link-ip-address { type inet:ip-address; description "IPv4 or IPv6 address."; } } case unnumbered-link { leaf link-node-id { type uint32; description "Node ID of the node where the link end point resides."; Liu, et al. Expires November 08, 2015 [Page 34] Internet-Draft YANG - TE Topology May 2015 } leaf te-link-id { type uint32; description "Identifies the link end point."; } } case node { leaf te-node-id { type uint32; description "Identifies the node."; } } case label { leaf label { type uint32; description "Identifies atomic TE resource or label."; } } } } // te-path-element grouping config-schedule-attributes { description "A list of schedules defining when a particular configuration takes effect."; list schedules { key "schedule-id"; description "A list of schedule elements."; leaf schedule-id { type uint32; description "Identifies the schedule element."; } leaf start { type yang:date-and-time; description "Start time."; } leaf schedule-duration { type string { pattern 'P(\d+Y)?(\d+M)?(\d+W)?(\d+D)?T(\d+H)?(\d+M)?(\d+S)?'; } description "Schedule duration in ISO 8601 format."; } leaf repeat-interval { type string { pattern 'R\d*/P(\d+Y)?(\d+M)?(\d+W)?(\d+D)?T(\d+H)?(\d+M)?' Liu, et al. Expires November 08, 2015 [Page 35] Internet-Draft YANG - TE Topology May 2015 + '(\d+S)?'; } description "Repeat interval in ISO 8601 format."; } } } grouping information-source-attributes { description "The attributes identifying source that has provided the related information, and the source credibility."; leaf information-source { type enumeration { enum "unknown" { description "The source is unknown"; } enum "locally-configured" { description "Configured TE link"; } enum "ospfv2" { description "OSPFv2"; } enum "ospfv3" { description "OSPFv3"; } enum "isis" { description "ISIS"; } enum "other" { description "Other source"; } } description "Indicates the source of the information."; } 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."; } } grouping te-node-attributes { description "Node attributes in a TE topology."; Liu, et al. Expires November 08, 2015 [Page 36] Internet-Draft YANG - TE Topology May 2015 container te-node-attributes { description "Node attributes in a TE topology."; uses config-schedule-attributes; leaf name { type inet:domain-name; description "Node name."; } leaf-list signaling-address { type inet:ip-address; description "Node signaling address."; } leaf-list flag { type flag-type; description "Node operational flags."; } leaf is-abstract { type boolean; description "true if the node is abstract, false when the node is actual."; } leaf underlay-topology { if-feature te-topology-hierarchy; type leafref { path "/tet:te-topologies/tet:topology/tet:te-topology-id"; } description "When an abstract node encapsulates a topology, this reference points to said topology."; } list te-link { key "te-link-id"; description "The local representation of a TE link, which interconnect TE nodes."; leaf te-link-id { type te-link-id; description "TE link identifier."; } choice 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"; Liu, et al. Expires November 08, 2015 [Page 37] Internet-Draft YANG - TE Topology May 2015 list bundled-link { key "sequence"; description "Specify a bundled interfface that is further partitioned."; leaf sequence { type uint32; description "Identify the sequence in the bundle."; } leaf te-link-ref { type leafref { path "../../../te-link-id"; require-instance "true"; } description "Reference to TE link on this node."; } } } } case component { container component-links { description "A set of component links"; list component-link { key "sequence"; description "Specify a component interfface that is sufficient to unambiguously identify the appropriate resources"; leaf sequence { type uint32; description "Identify the sequence in the bundle."; } leaf component-link-ref { type leafref { path "/if:interfaces/if:interface/if:name"; require-instance "false"; } description "Reference to component link on this node."; } } } Liu, et al. Expires November 08, 2015 [Page 38] Internet-Draft YANG - TE Topology May 2015 } } } list connectivity-matrix { key "id"; description "Represents node's switching limitations, i.e. limitations in interconnecting network TE links across the node."; leaf id { type uint32; description "Identifies the connectivity-matrix entry."; } container from-link { uses tet:link-end-ref; description "Reference to source NTP."; } container to-link { uses tet:link-end-ref; description "Reference to destination NTP."; } leaf is-allowed { type boolean; description "true - switching is allowed, false - switching is disallowed."; } } container ted { description "Includes TE node attributes."; uses ted:ted-node-attributes; } } } // te-node-attributes grouping te-node-state-attributes { description "Node state attributes in a TE topology."; container te-node-state-attributes { description "Node state attributes in a TE topology."; uses information-source-attributes; } } // te-node-state-attributes grouping te-link-underlay-attributes { description "Attributes for te-link underlay."; container underlay-path { description Liu, et al. Expires November 08, 2015 [Page 39] Internet-Draft YANG - TE Topology May 2015 "The service path on the underlay topology that supports this link."; leaf topology-id { type leafref { path "/tet:te-topologies/tet:topology/tet:te-topology-id"; require-instance false; } description "Identifies the topology where the path belongs."; } list path-element { key "path-element-id"; description "A list of path elements describing the service path"; leaf path-element-id { type uint32; description "To identify the element in a path."; } uses te-path-element; } } // underlay-path container underlay-backup-path { description "The backup service path on the underlay topology that supports this link."; leaf topology-id { type leafref { path "/tet:te-topologies/tet:topology/tet:te-topology-id"; require-instance false; } description "Identifies the topology where the path belongs."; } list path-element { key "path-element-id"; description "A list of path elements describing the backup service path"; leaf path-element-id { type uint32; description "To identify the element in a path."; } uses te-path-element; } } // underlay-backup-path leaf underlay-protection-type { type uint16; description Liu, et al. Expires November 08, 2015 [Page 40] Internet-Draft YANG - TE Topology May 2015 "Underlay protection type desired for this link"; } container underlay-trail-src { uses tet:link-end-ref; description "Source TE link of the underlay trail."; } container underlay-trail-des { uses tet:link-end-ref; description "Destination TE link of the underlay trail."; } } // te-link-underlay-attributes grouping te-link-state-underlay-attributes { description "State attributes for te-link underlay."; leaf dynamic { type boolean; description "true if the underlay is dynamically created."; } leaf committed { type boolean; description "true if the underlay is committed."; } } // te-link-state-underlay-attributes grouping te-link-attributes { description "Link attributes in a TE topology."; container te-link-attributes { description "Link attributes in a TE topology."; uses config-schedule-attributes; leaf name { type string; description "Link Name"; } leaf-list flag { type flag-type; description "Link flags"; } leaf is-abstract { type boolean; description "true if the link is abstract."; } container underlay { if-feature te-topology-hierarchy; Liu, et al. Expires November 08, 2015 [Page 41] Internet-Draft YANG - TE Topology May 2015 presence "Indicates the underlay exists for this link."; description "State of the underlay of this link."; uses te-link-underlay-attributes; } // underlay container ted { description "Includes TE link attributes."; uses ted:ted-link-attributes; } } } // te-link-attributes grouping te-link-state-attributes { description "Link state attributes in a TE topology."; container te-link-state-attributes { description "Link state attributes in a TE topology."; uses information-source-attributes; } } // te-link-state-attributes /* * Configuration data nodes */ container te-topologies { description "This container acts as the top-level data element of configuration data."; list topology { key "te-topology-id"; description "This is the model of an abstract topology. A topology contains nodes and links. Each topology MUST be identified by a unique te-topology-id for reason that a network could contain many topologies."; leaf te-topology-id { type te-topology-id; description "It is presumed that a datastore will contain many topologies. To distinguish between topologies it is vital to have UNIQUE topology identifiers."; } container topology-types { description "This container is used to identify the type, or types (as a topology can support several types simultaneously), of Liu, et al. Expires November 08, 2015 [Page 42] Internet-Draft YANG - TE Topology May 2015 the topology. Topology types are the subject of several integrity constraints that an implementing server can validate in order to maintain integrity of the datastore. Topology types are indicated through separate data nodes; the set of topology types is expected to increase over time. To add support for a new topology, an augmenting module needs to augment this container with a new empty optional container to indicate the new topology type. The use of a container allows to indicate a subcategorization of topology types. The container SHALL NOT be augmented with any data nodes that serve a purpose other than identifying a particular topology type."; uses te-topology-type; // Defines the TE topology type. } list node { key "te-node-id"; leaf te-node-id { type te-node-id; description "The identifier of a node in the topology. A node is specific to a topology to which it belongs."; } description "The list of network nodes defined for the topology."; leaf te-node-template { type leafref { path "/te-topologies/node-template/name"; } description "The reference to a TE node template."; } uses te-node-attributes; } list link { key "source-te-node-id source-te-link-id " + "dest-te-node-id dest-te-link-id"; leaf source-te-node-id { type leafref { path "../../node/te-node-id"; } mandatory true; description "Source node identifier, must be in same topology."; } leaf source-te-link-id { Liu, et al. Expires November 08, 2015 [Page 43] Internet-Draft YANG - TE Topology May 2015 type leafref { path "../../node[te-node-id = " + "current()/../source-te-node-id]/" + "te-node-attributes/te-link/te-link-id"; } mandatory true; description "Source TE link identifier, must be in same topology."; } leaf dest-te-node-id { type leafref { path "../../node/te-node-id"; } mandatory true; description "Destination node identifier, must be in the same topology."; } leaf dest-te-link-id { type leafref { path "../../node[te-node-id = " + "current()/../dest-te-node-id]/" + "te-node-attributes/te-link/te-link-id"; } mandatory true; description "Destination TE link identifier, must be in same topology."; } description "TE link is a logical construct that represents a way to group/map information about certain physical resources (and their properties) that interconnect TE nodes. A Network Link connects a by Local (Source) node and a Remote (Destination) Network Nodes via a set of the nodes' TE links. As it is possible to have several links between the same source and destination nodes, and as a link could potentially be re-homed, to ensure that we would always know to distinguish between links, every link is identified by a dedicated link identifier. Note that a link models a point-to-point link, not a multipoint link."; leaf te-link-template { type leafref { path "/te-topologies/link-template/name"; Liu, et al. Expires November 08, 2015 [Page 44] Internet-Draft YANG - TE Topology May 2015 } description "The reference to a TE link template."; } uses te-link-attributes; } // link } // topology list node-template { key "name"; leaf name { type te-template-name; description "The name to identify a TE node template."; } description "The list of TE node templates used to define sharable and reusable TE node attributes."; uses te-node-attributes; } // node list link-template { key "name"; leaf name { type te-template-name; description "The name to identify a TE link template."; } description "The list of TE link templates used to define sharable and reusable TE link attributes."; uses te-link-attributes; } // link } // te-topologies /* * Operational state data nodes */ container te-topologies-state { config "false"; description "This container acts as the top-level state data element of operational data."; list topology { key "te-topology-id"; description "This is the model of an abstract topology. A topology Liu, et al. Expires November 08, 2015 [Page 45] Internet-Draft YANG - TE Topology May 2015 contains nodes and links. Each topology MUST be identified by a unique te-topology-id for reason that a network could contain many topologies."; leaf te-topology-id { type te-topology-id; description "It is presumed that a datastore will contain many topologies. To distinguish between topologies it is vital to have UNIQUE topology identifiers."; } leaf server-provided { type boolean; config false; description "Indicates whether the topology is configurable by clients, or whether it is provided by the server. This leaf is populated by the server implementing the model. It is set to false for topologies that are created by a client; it is set to true otherwise. If it is set to true, any attempt to edit the topology MUST be rejected."; } container topology-types { description "This container is used to identify the type, or types (as a topology can support several types simultaneously), of the topology. Topology types are the subject of several integrity constraints that an implementing server can validate in order to maintain integrity of the datastore. Topology types are indicated through separate data nodes; the set of topology types is expected to increase over time. To add support for a new topology, an augmenting module needs to augment this container with a new empty optional container to indicate the new topology type. The use of a container allows to indicate a subcategorization of topology types. The container SHALL NOT be augmented with any data nodes that serve a purpose other than identifying a particular topology type."; uses te-topology-type; // Defines the TE topology type. } list node { key "te-node-id"; leaf te-node-id { type te-node-id; description "The identifier of a node in the topology. Liu, et al. Expires November 08, 2015 [Page 46] Internet-Draft YANG - TE Topology May 2015 A node is specific to a topology to which it belongs."; } description "The list of network nodes defined for the topology."; leaf te-node-template { type leafref { path "/te-topologies/node-template/name"; } description "The reference to a TE node template."; } uses te-node-attributes; uses te-node-state-attributes; } list link { key "source-te-node-id source-te-link-id " + "dest-te-node-id dest-te-link-id"; leaf source-te-node-id { type leafref { path "../../node/te-node-id"; } mandatory true; description "Source node identifier, must be in same topology."; } leaf source-te-link-id { type leafref { path "../../node[te-node-id = " + "current()/../source-te-node-id]/" + "te-node-attributes/te-link/te-link-id"; } mandatory true; description "Source TE link identifier, must be in same topology."; } leaf dest-te-node-id { type leafref { path "../../node/te-node-id"; } mandatory true; description "Destination node identifier, must be in the same topology."; } leaf dest-te-link-id { type leafref { path "../../node[te-node-id = " + "current()/../dest-te-node-id]/" Liu, et al. Expires November 08, 2015 [Page 47] Internet-Draft YANG - TE Topology May 2015 + "te-node-attributes/te-link/te-link-id"; } mandatory true; description "Destination TE link identifier, must be in same topology."; } description "TE link is a logical construct that represents a way to group/map information about certain physical resources (and their properties) that interconnect TE nodes. A Network Link connects a by Local (Source) node and a Remote (Destination) Network Nodes via a set of the nodes' TE links. As it is possible to have several links between the same source and destination nodes, and as a link could potentially be re-homed, to ensure that we would always know to distinguish between links, every link is identified by a dedicated link identifier. Note that a link models a point-to-point link, not a multipoint link."; leaf te-link-template { type leafref { path "/te-topologies/link-template/name"; } description "The reference to a TE link template."; } uses te-link-attributes; uses te-link-state-attributes; } // link } // topology } // te-topologies augment "/te-topologies-state/topology/link/te-link-attributes/" + "underlay" { description "Add state attributes to te-link underlay."; uses te-link-state-underlay-attributes; } /* * Notifications */ notification te-node-event { description "Notification event for TE node"; Liu, et al. Expires November 08, 2015 [Page 48] Internet-Draft YANG - TE Topology May 2015 leaf event-type { type te-topology-event-type; description "Event type"; } uses node-ref; uses te-topology-type; uses tet:te-node-attributes; } notification te-link-event { description "Notification event for TE link"; leaf event-type { type te-topology-event-type; description "Event type"; } uses link-ref; uses te-topology-type; uses tet:te-link-attributes; } augment "/te-link-event/te-link-attributes/underlay" { description "Add state attributes to te-link underlay."; uses te-link-state-underlay-attributes; } } 4. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC6020] Bjorklund, M., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, October 2010. [RFC6241] Enns, R., Bjorklund, M., Schoenwaelder, J., and A. Bierman, "Network Configuration Protocol (NETCONF)", RFC 6241, June 2011. Authors' Addresses Xufeng Liu Ericsson Email: xufeng.liu@ericsson.com Liu, et al. Expires November 08, 2015 [Page 49] Internet-Draft YANG - TE Topology May 2015 Igor Bryskin ADVA Optical Networking Email: ibryskin@advaoptical.com Vishnu Pavan Beeram Juniper Networks Email: vbeeram@juniper.net Tarek Saad Cisco Systems Inc. Email: tsaad@cisco.com Himanshu Shah Ciena Email: tsaad@cisco.com Liu, et al. Expires November 08, 2015 [Page 50]