TEAS Working Group Xufeng Liu Internet Draft Ericsson Intended status: Standards Track Igor Bryskin ADVA Optical Networking Vishnu Pavan Beeram Juniper Networks Tarek Saad Cisco Systems Inc Himanshu Shah Ciena Oscar Gonzalez De Dios Telefonica Expires: September 09, 2015 March 09, 2015 YANG Data Model for TE Topologies draft-liu-teas-yang-te-topo-00 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), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html This Internet-Draft will expire on September 09, 2015. Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. Beeram, et al Expires September 09, 2015 [Page 1] Internet-Draft YANG - TE Topology March 2015 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 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. Abstract This document defines a YANG data model for representing and manipulating TE Topologies. Conventions used in this document The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC-2119 [RFC2119]. Table of Contents 1. Introduction...................................................2 1.1. Tree Structure - Legend...................................3 1.2. Prefixes in Data Node Names...............................4 2. Design Considerations..........................................4 2.1. Extensible Model..........................................4 2.2. Overlay/Underlay Relationship.............................4 2.3. Scheduling Parameters.....................................4 2.4. Provider vs Abstract TE Topologies........................5 2.5. Open Items................................................6 3. Tree Structure.................................................6 4. TE Topology Yang Module.......................................42 5. Security Considerations.......................................68 6. IANA Considerations...........................................68 7. Normative References..........................................69 8. Acknowledgments...............................................69 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 Beeram, et al Expires September 09, 2015 [Page 2] Internet-Draft YANG - TE Topology March 2015 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. 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 (":"). Beeram, et al Expires September 09, 2015 [Page 3] Internet-Draft YANG - TE Topology March 2015 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 2. Design Considerations 2.1. 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. 2.2. Overlay/Underlay Relationship The model captures overlay and underlay relationship for TE nodes/links. For example - in networks where multiple TE Topologies are 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. 2.3. 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 Beeram, et al Expires September 09, 2015 [Page 4] Internet-Draft YANG - TE Topology March 2015 | +--rw repeat-interval? string 2.4. Provider vs Abstract TE Topologies The TE Topology exported by the provider network to a client could be a provider TE Topology or an abstract TE Topology. Provider TE Topology is the TE topology exported by the provider network exactly as the topology is known to the provider itself in an unmodified way. The nodes/links that make up a provider TE topology are named from the provider name space and are private to that topology. +--:(provider) +--rw provider +--rw node* [te-node-id] | +--rw te-node-id te-node-id | : +--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 : An abstract TE Topology allows the provider to present the network in abstract terms on per client basis. These topologies are typically decoupled from the provider network topology. The nodes/links that constitute an abstract TE Topology are picked from a global pool of nodes/links. The nodes/links in the global pool can be used in more than one abstract TE Topologies. +--:(abstract) +--rw abstract +--rw node* [te-node-id] | +--rw te-node-uu-id leafref | +--rw te-node-id leafref +--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 Beeram, et al Expires September 09, 2015 [Page 5] Internet-Draft YANG - TE Topology March 2015 2.5. Open Items - 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. - 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. - Terminology: A provider network can export its TE Topology as is to the client or it could export an abstract representation of that TE Topology. This version of the document uses the term "Provider TE Topology" for the former and the term "Abstract TE Topology" for the latter. The authors would like to get wider consensus on the use of these terms (and if necessary, find alternatives) before the next revision. 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 (abstract-type)? | | +--:(abstract) | | | +--rw abstract | | | +--rw node* [te-node-id] | | | | +--rw te-node-uu-id leafref | | | | +--rw te-node-id leafref | | | +--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 | | +--:(provider) | | +--rw provider | | +--rw node* [te-node-id] | | | +--rw te-node-id te-node-id | | | +--rw te-node-attributes Beeram, et al Expires September 09, 2015 [Page 6] Internet-Draft YANG - TE Topology March 2015 | | | +--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 | | | | +--rw from-link | | | | | +--rw node-ref? leafref | | | | | +--rw link-end-ref? leafref | | | | +--rw to-link | | | | | +--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] Beeram, et al Expires September 09, 2015 [Page 7] Internet-Draft YANG - TE Topology March 2015 | | | | +--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-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] | | | | +--rw path-element-id uint32 Beeram, et al Expires September 09, 2015 [Page 8] Internet-Draft YANG - TE Topology March 2015 | | | | +--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 node-ref? leafref | | | | +--rw link-end-ref? leafref | | | +--rw underlay-trail-des | | | +--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 Beeram, et al Expires September 09, 2015 [Page 9] Internet-Draft YANG - TE Topology March 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 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 Beeram, et al Expires September 09, 2015 [Page 10] Internet-Draft YANG - TE Topology March 2015 | | | +--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? performance-metric-normality | | | +--rw unidirectional-max-delay? performance-metric-normality Beeram, et al Expires September 09, 2015 [Page 11] Internet-Draft YANG - TE Topology March 2015 | | | +--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 Beeram, et al Expires September 09, 2015 [Page 12] Internet-Draft YANG - TE Topology March 2015 | | +--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 Beeram, et al Expires September 09, 2015 [Page 13] Internet-Draft YANG - TE Topology March 2015 | | +--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 node* [te-node-uu-id] | | +--rw te-node-uu-id yang:uuid | | +--rw te-node-id? te-node-id | | +--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] Beeram, et al Expires September 09, 2015 [Page 14] Internet-Draft YANG - TE Topology March 2015 | | | | +--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 | | | +--rw from-link | | | | +--rw node-ref? leafref | | | | +--rw link-end-ref? leafref | | | +--rw to-link | | | | +--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-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 Beeram, et al Expires September 09, 2015 [Page 15] Internet-Draft YANG - TE Topology March 2015 | | | +--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] | | | +--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 node-ref? leafref | | | +--rw link-end-ref? leafref | | +--rw underlay-trail-des | | +--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 Beeram, et al Expires September 09, 2015 [Page 16] Internet-Draft YANG - TE Topology March 2015 | | +--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 | | | +--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 Beeram, et al Expires September 09, 2015 [Page 17] Internet-Draft YANG - TE Topology March 2015 | | +--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? performance-metric-normality | | +--rw unidirectional-max-delay? performance-metric-normality | | +--rw unidirectional-delay-variation? performance-metric-normality Beeram, et al Expires September 09, 2015 [Page 18] Internet-Draft YANG - TE Topology March 2015 | | +--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 Beeram, et al Expires September 09, 2015 [Page 19] Internet-Draft YANG - TE Topology March 2015 | | | +--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 Beeram, et al Expires September 09, 2015 [Page 20] Internet-Draft YANG - TE Topology March 2015 | | | +--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 | +--ro topology-types | | +--ro te-topology! | +--ro (abstract-type)? | +--:(abstract) | | +--ro abstract | | +--ro node* [te-node-id] | | | +--ro te-node-uu-id leafref | | | +--ro te-node-id leafref | | +--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 | +--:(provider) | +--ro provider | +--ro node* [te-node-id] | | +--ro te-node-id te-node-id | | +--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)? Beeram, et al Expires September 09, 2015 [Page 21] Internet-Draft YANG - TE Topology March 2015 | | | | +--:(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 node-ref? leafref | | | | | +--ro link-end-ref? leafref | | | | +--ro to-link | | | | | +--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 | | +--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-attributes | | +--ro schedules* [schedule-id] | | | +--ro schedule-id uint32 Beeram, et al Expires September 09, 2015 [Page 22] Internet-Draft YANG - TE Topology March 2015 | | | +--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) Beeram, et al Expires September 09, 2015 [Page 23] Internet-Draft YANG - TE Topology March 2015 | | | | +--ro label? uint32 | | | +--ro underlay-protection-type? uint16 | | | +--ro underlay-trail-src | | | | +--ro node-ref? leafref | | | | +--ro link-end-ref? leafref | | | +--ro underlay-trail-des | | | | +--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 Beeram, et al Expires September 09, 2015 [Page 24] Internet-Draft YANG - TE Topology March 2015 | | | | +--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 | | | +--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 Beeram, et al Expires September 09, 2015 [Page 25] Internet-Draft YANG - TE Topology March 2015 | | +--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 Beeram, et al Expires September 09, 2015 [Page 26] Internet-Draft YANG - TE Topology March 2015 | | +--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 Beeram, et al Expires September 09, 2015 [Page 27] Internet-Draft YANG - TE Topology March 2015 | | | | +--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 | | | | +--ro bandwidth? decimal64 | | | +--ro packet-switch-capable Beeram, et al Expires September 09, 2015 [Page 28] Internet-Draft YANG - TE Topology March 2015 | | | | +--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 +--ro node* [te-node-uu-id] | +--ro te-node-uu-id yang:uuid | +--ro te-node-id? te-node-id | +--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 Beeram, et al Expires September 09, 2015 [Page 29] Internet-Draft YANG - TE Topology March 2015 | | | +--ro from-link | | | | +--ro node-ref? leafref | | | | +--ro link-end-ref? leafref | | | +--ro to-link | | | | +--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 | +--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-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 Beeram, et al Expires September 09, 2015 [Page 30] Internet-Draft YANG - TE Topology March 2015 | | | +--:(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 | | +--ro underlay-trail-src | | | +--ro node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro underlay-trail-des | | +--ro node-ref? leafref | | +--ro link-end-ref? leafref | +--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 Beeram, et al Expires September 09, 2015 [Page 31] Internet-Draft YANG - TE Topology March 2015 | | | +--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 | | +--ro unidirectional-available-bandwidth? decimal64 | | +--ro unidirectional-utilized-bandwidth? decimal64 Beeram, et al Expires September 09, 2015 [Page 32] Internet-Draft YANG - TE Topology March 2015 | +--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 Beeram, et al Expires September 09, 2015 [Page 33] Internet-Draft YANG - TE Topology March 2015 | | +--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 Beeram, et al Expires September 09, 2015 [Page 34] Internet-Draft YANG - TE Topology March 2015 | | | +--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 | | | +--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] Beeram, et al Expires September 09, 2015 [Page 35] Internet-Draft YANG - TE Topology March 2015 | +--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 | +--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 node-ref? leafref | | | +--ro link-end-ref? leafref | | +--ro to-link | | | +--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 Beeram, et al Expires September 09, 2015 [Page 36] Internet-Draft YANG - TE Topology March 2015 | +--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 +--ro event-type? te-topology-event-type +--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 Beeram, et al Expires September 09, 2015 [Page 37] Internet-Draft YANG - TE Topology March 2015 | | +--:(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 | +--ro underlay-trail-src | | +--ro node-ref? leafref | | +--ro link-end-ref? leafref | +--ro underlay-trail-des | | +--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 Beeram, et al Expires September 09, 2015 [Page 38] Internet-Draft YANG - TE Topology March 2015 | | +--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 | +--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 Beeram, et al Expires September 09, 2015 [Page 39] Internet-Draft YANG - TE Topology March 2015 | +--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 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 Beeram, et al Expires September 09, 2015 [Page 40] Internet-Draft YANG - TE Topology March 2015 | +--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 Beeram, et al Expires September 09, 2015 [Page 41] Internet-Draft YANG - TE Topology March 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 4. TE Topology Yang Module 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 { prefix "if"; } organization "TBD"; contact "TBD"; description "TE topology model"; revision "2015-03-02" { description "Initial revision"; reference "TBD"; Beeram, et al Expires September 09, 2015 [Page 42] Internet-Draft YANG - TE Topology March 2015 } /* * 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-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. 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. Beeram, et al Expires September 09, 2015 [Page 43] Internet-Draft YANG - TE Topology March 2015 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"; } } 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"; } Beeram, et al Expires September 09, 2015 [Page 44] Internet-Draft YANG - TE Topology March 2015 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."; leaf source-te-node-id-ref { type leafref { path "/tet:te-topologies/tet:link/tet:source-te-node-id"; } description "An absolute reference to a link instance."; } leaf source-te-link-id-ref { type leafref { path "/tet:te-topologies/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:link/tet:dest-te-node-id"; } description Beeram, et al Expires September 09, 2015 [Page 45] Internet-Draft YANG - TE Topology March 2015 "An absolute reference to a link instance."; } leaf dest-te-link-id-ref { type leafref { path "/tet:te-topologies/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."; leaf node-ref { type leafref { path "/tet:te-topologies/tet:node/tet:te-node-uu-id"; } description "An absolute reference to a node instance."; } } 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:node[tet:te-node-uu-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."; Beeram, et al Expires September 09, 2015 [Page 46] Internet-Draft YANG - TE Topology March 2015 } } 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."; } 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 { Beeram, et al Expires September 09, 2015 [Page 47] Internet-Draft YANG - TE Topology March 2015 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)?' + '(\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" { Beeram, et al Expires September 09, 2015 [Page 48] Internet-Draft YANG - TE Topology March 2015 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."; 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 Beeram, et al Expires September 09, 2015 [Page 49] Internet-Draft YANG - TE Topology March 2015 "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"; 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 Beeram, et al Expires September 09, 2015 [Page 50] Internet-Draft YANG - TE Topology March 2015 "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."; } } } } } } 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; Beeram, et al Expires September 09, 2015 [Page 51] Internet-Draft YANG - TE Topology March 2015 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 "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"; Beeram, et al Expires September 09, 2015 [Page 52] Internet-Draft YANG - TE Topology March 2015 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 "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 Beeram, et al Expires September 09, 2015 [Page 53] Internet-Draft YANG - TE Topology March 2015 "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; 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."; Beeram, et al Expires September 09, 2015 [Page 54] Internet-Draft YANG - TE Topology March 2015 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 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 Beeram, et al Expires September 09, 2015 [Page 55] Internet-Draft YANG - TE Topology March 2015 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. } choice abstract-type { description "Different structures for abstract or provider topologies."; case abstract { container abstract { description "The structure for an abstract topology."; list node { key "te-node-id"; leaf te-node-uu-id { type leafref { path "../../../../node/te-node-uu-id"; } mandatory true; description "The reference to the te-node."; } leaf te-node-id { type leafref { path "../../../../node[te-node-uu-id = " + "current()/../te-node-uu-id]/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."; } list link { key "source-te-node-id source-te-link-id " + "dest-te-node-id dest-te-link-id"; Beeram, et al Expires September 09, 2015 [Page 56] Internet-Draft YANG - TE Topology March 2015 leaf source-te-node-id { type leafref { path "../../../../link/source-te-node-id"; } description "Source node identifier."; } leaf source-te-link-id { type leafref { path "../../../../link/source-te-link-id"; } description "Source TE link identifier."; } leaf dest-te-node-id { type leafref { path "../../../../link/dest-te-node-id"; } description "Destination node identifier."; } leaf dest-te-link-id { type leafref { path "../../../../link/dest-te-link-id"; } description "Destination TE link identifier."; } description "TE links in this topology."; } // link } // abstract } case provider { container provider { description "The structure for a provider topology."; 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."; } Beeram, et al Expires September 09, 2015 [Page 57] Internet-Draft YANG - TE Topology March 2015 description "The list of network nodes defined for the topology."; 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 { 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 Beeram, et al Expires September 09, 2015 [Page 58] Internet-Draft YANG - TE Topology March 2015 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."; uses te-link-attributes; } // link } // basic } } // choice abstract-type } // topology list node { key "te-node-uu-id"; leaf te-node-uu-id { type yang:uuid; description "The universally unique identifier of a node."; } 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."; uses te-node-attributes; } // node list link { key "source-te-node-id source-te-link-id " + "dest-te-node-id dest-te-link-id"; Beeram, et al Expires September 09, 2015 [Page 59] Internet-Draft YANG - TE Topology March 2015 leaf source-te-node-id { type leafref { path "../../node/te-node-uu-id"; } mandatory true; description "Source node identifier, must be in same topology."; } leaf source-te-link-id { type leafref { path "../../node[te-node-uu-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-uu-id"; } mandatory true; description "Destination node identifier, must be in the same topology."; } leaf dest-te-link-id { type leafref { path "../../node[te-node-uu-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. Beeram, et al Expires September 09, 2015 [Page 60] Internet-Draft YANG - TE Topology March 2015 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."; 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 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 client-configurable 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 Beeram, et al Expires September 09, 2015 [Page 61] Internet-Draft YANG - TE Topology March 2015 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. } choice abstract-type { description "Different structures for abstract or provider topologies."; case abstract { container abstract { description "The structure for an abstract topology."; list node { key "te-node-id"; leaf te-node-uu-id { type leafref { path "../../../../node/te-node-uu-id"; } mandatory true; description "The reference to the te-node."; } leaf te-node-id { type leafref { path "../../../../node[te-node-uu-id = " + "current()/../te-node-uu-id]/te-node-id"; } Beeram, et al Expires September 09, 2015 [Page 62] Internet-Draft YANG - TE Topology March 2015 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."; } 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 "../../../../link/source-te-node-id"; } description "Source node identifier."; } leaf source-te-link-id { type leafref { path "../../../../link/source-te-link-id"; } description "Source TE link identifier."; } leaf dest-te-node-id { type leafref { path "../../../../link/dest-te-node-id"; } description "Destination node identifier."; } leaf dest-te-link-id { type leafref { path "../../../../link/dest-te-link-id"; } description "Destination TE link identifier."; } description "TE links in this topology."; } // link } // abstract } case provider { Beeram, et al Expires September 09, 2015 [Page 63] Internet-Draft YANG - TE Topology March 2015 container provider { description "The structure for a provider topology."; 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."; 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; Beeram, et al Expires September 09, 2015 [Page 64] Internet-Draft YANG - TE Topology March 2015 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."; uses te-link-attributes; uses te-link-state-attributes; } // link } // basic } } // choice abstract-type } list node { key "te-node-uu-id"; leaf te-node-uu-id { type yang:uuid; description "The universally unique identifier of a node."; } leaf te-node-id { Beeram, et al Expires September 09, 2015 [Page 65] Internet-Draft YANG - TE Topology March 2015 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."; uses te-node-attributes; uses te-node-state-attributes; } // node 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-uu-id"; } mandatory true; description "Source node identifier, must be in same topology."; } leaf source-te-link-id { type leafref { path "../../node[te-node-uu-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-uu-id"; } mandatory true; description "Destination node identifier, must be in the same topology."; } leaf dest-te-link-id { type leafref { path "../../node[te-node-uu-id = " + "current()/../dest-te-node-id]/" Beeram, et al Expires September 09, 2015 [Page 66] Internet-Draft YANG - TE Topology March 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."; uses te-link-attributes; uses te-link-state-attributes; } // link } // te-topologies augment "/te-topologies-state/topology/abstract-type/provider/" + "provider/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"; leaf event-type { type te-topology-event-type; description "Event type"; } uses node-ref; uses te-topology-type; uses tet:te-node-attributes; Beeram, et al Expires September 09, 2015 [Page 67] Internet-Draft YANG - TE Topology March 2015 } 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; } } 5. Security Considerations The transport protocol used for retrieving/manipulating the TE topology data MUST support authentication and SHOULD support encryption. The data-model by itself does not create any security implications. 6. IANA Considerations This document registers the following URIs in the IETF XML registry [RFC3688]. Following the format in [RFC3688], the following registration is requested to be made. URI: urn:ietf:params:xml:ns:yang:ietf-te-topology XML: N/A, the requested URI is an XML namespace. This document registers a YANG module in the YANG Module Names registry [RFC6020]. name: ietf-te-topology namespace: urn:ietf:params:xml:ns:yang:ietf-te-topology prefix: tet Beeram, et al Expires September 09, 2015 [Page 68] Internet-Draft YANG - TE Topology March 2015 7. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, January 2004. [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. [RFC6991] Schoenwaelder, J., "Common YANG Data Types", RFC 6991, July 2013. [YANG-TED] Liu, X., "A Yang module for TED", . [YANG-NET-TOPO] Clemm, A., "A Data Model for Network Topologies", 8. Acknowledgments The authors would like to thank Lou Berger, Sue Hares, Mazen Khaddam and Zafar Ali for participating in design discussions and providing valuable insights. Authors' Addresses Xufeng Liu Ericsson Email: xufeng.liu@ericsson.com Igor Bryskin ADVA Optical Networking Email: ibryskin@advaoptical.com Vishnu Pavan Beeram Juniper Networks Email: vbeeram@juniper.net Tarek Saad Cisco Systems Inc Beeram, et al Expires September 09, 2015 [Page 69] Internet-Draft YANG - TE Topology March 2015 Email: tsaad@cisco.com Himanshu Shah Ciena Email: hshah@ciena.com Oscar Gonzalez De Dios Telefonica Email: oscar.gonzalezdedios@telefonica.com Beeram, et al Expires September 09, 2015 [Page 70]