Network Working Group X. Liu Internet-Draft Volta Networks Intended status: Standards Track I. Bryskin Expires: January 2, 2019 Huawei Technologies V. Beeram Juniper Networks T. Saad Cisco Systems Inc H. Shah Ciena O. Gonzalez de Dios Telefonica July 1, 2018 YANG Data Model for Layer 3 TE Topologies draft-ietf-teas-yang-l3-te-topo-02 Abstract This document defines a YANG data model for layer 3 traffic engineering 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 https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on January 2, 2019. Copyright Notice Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of Liu, et al. Expires January 2, 2019 [Page 1] Internet-Draft YANG L3 TE Topology July 2018 publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3 1.2. Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . 3 2. Modeling Considerations for L3 TE Topologies . . . . . . . . 3 2.1. Relationship Between Layer 3 Topology and TE topology . . 3 2.2. Relationship Modeling . . . . . . . . . . . . . . . . . . 4 2.2.1. Topology Referencing . . . . . . . . . . . . . . . . 4 2.2.2. Node Referencing . . . . . . . . . . . . . . . . . . 4 2.2.3. Link Termination Point Referencing . . . . . . . . . 4 2.2.4. Link Referencing . . . . . . . . . . . . . . . . . . 5 2.3. Topology Type Modeling . . . . . . . . . . . . . . . . . 5 3. Packet Switching Technology Extensions . . . . . . . . . . . 5 3.1. Technology Specific Link Attributes . . . . . . . . . . . 5 3.2. Performance Metric . . . . . . . . . . . . . . . . . . . 6 4. Model Structure . . . . . . . . . . . . . . . . . . . . . . . 6 4.1. Layer 3 TE Topology Module . . . . . . . . . . . . . . . 6 4.2. Packet Switching TE Topology Module . . . . . . . . . . . 7 5. YANG Modules . . . . . . . . . . . . . . . . . . . . . . . . 21 5.1. Layer 3 TE Topology Module . . . . . . . . . . . . . . . 21 5.2. Packet Switching TE Topology Module . . . . . . . . . . . 26 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 31 7. Security Considerations . . . . . . . . . . . . . . . . . . . 33 8. References . . . . . . . . . . . . . . . . . . . . . . . . . 35 8.1. Normative References . . . . . . . . . . . . . . . . . . 35 8.2. Informative References . . . . . . . . . . . . . . . . . 37 Appendix A. Companion YANG Model for Non-NMDA Compliant Implementations . . . . . . . . . . . . . . . . . . 38 A.1. Layer 3 TE Topology State Module . . . . . . . . . . . . 38 A.2. Packet Switching TE Topology State Module . . . . . . . . 41 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 46 1. Introduction This document defines a YANG [RFC7950] data model for describing the relationship between a layer 3 network topology [RFC8346] and a TE topology [I-D.ietf-teas-yang-te-topo]. When traffic engineering is enabled on a layer 3 network topology, there will be a corresponding TE topology. The TE topology may or Liu, et al. Expires January 2, 2019 [Page 2] Internet-Draft YANG L3 TE Topology July 2018 may not be congruent to the layer 3 network topology. When such a congruent TE topology exists, there will be a one-to-one association between the one modeling element in the layer 3 topology to another element in the TE topology. When such a congruent TE topology does not exist, the association will not be one-to-one. This YANG data model allows both cases. 1.1. Terminology The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, [RFC2119]. The following terms are defined in [RFC7950] and are not redefined here: o augment o data model o data node 1.2. Tree Diagrams Tree diagrams used in this document follow the notation defined in [RFC8340]. 2. Modeling Considerations for L3 TE Topologies 2.1. Relationship Between Layer 3 Topology and TE topology In general, layer 3 network topology model and TE topology model can be used independently. When traffic engineering is enabled on a layer 3 network topology, there will be associations between objects in layer 3 network topologies and objects in TE topologies. The properties of these relations are: o The associations are between objects of the same class, i.e. node to node or link to link. o The multiplicity of such an association is: 0..1 to 0..1. An object in a layer 3 network may have zero or one associated object in the corresponding TE network. Liu, et al. Expires January 2, 2019 [Page 3] Internet-Draft YANG L3 TE Topology July 2018 2.2. Relationship Modeling YANG data type leafref is used to model the association relationship between a layer 3 network topology and a TE topology. YANG must statements are used to enforce the referenced objects are in the topologies of proper type. 2.2.1. Topology Referencing When TE is enabled on a layer 3 network topology, if the TE topology is not congruent to the layer 3 network topology, the layer 3 network topology will have a reference to the corresponding TE topology. Such a reference is modeled as follows: augment /nw:networks/nw:network/l3t:l3-topology-attributes: +--rw l3-te-topology-attributes +--rw network-ref? -> /nw:networks/network/network-id If the TE topology is congruent to the layer 3 network topology, the above reference can still be used to specified TE paramenters defined in the TE topology model. 2.2.2. Node Referencing When TE is enabled on a layer 3 network topology, if the TE topology is not congruent to the layer 3 network topology, a layer 3 network node may have a reference to the corresponding TE node. Such a reference is modeled as follows: augment /nw:networks/nw:network/nw:node/l3t:l3-node-attributes: +--rw l3-te-node-attributes +--rw node-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id 2.2.3. Link Termination Point Referencing When TE is enabled on a layer 3 network topology, if the TE topology is not congruent to the layer 3 network topology, a layer 3 link termination point may have a reference to the corresponding TE link termination point. Such a reference is modeled as follows: augment /nw:networks/nw:network/nw:node/nt:termination-point /l3t:l3-termination-point-attributes: +--rw l3-te-tp-attributes +--rw tp-ref? leafref +--rw node-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id Liu, et al. Expires January 2, 2019 [Page 4] Internet-Draft YANG L3 TE Topology July 2018 2.2.4. Link Referencing When TE is enabled on a layer 3 network topology, if the TE topology is not congruent to the layer 3 network topology, a layer 3 link may have a reference to the corresponding TE link. Such a reference is modeled as follows: augment /nw:networks/nw:network/nt:link/l3t:l3-link-attributes: +--rw l3-te-link-attributes +--rw link-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id 2.3. Topology Type Modeling A new topology type is defined in this document, to indicate a topology that is a layer 3 topology with TE enabled. augment /nw:networks/nw:network/nw:network-types /l3t:l3-unicast-topology: +--rw l3-te! 3. Packet Switching Technology Extensions 3.1. Technology Specific Link Attributes The technology agnostic TE Topology model is augmented with packet switching specific link attributes: augment /nw:networks/tet:te/tet:templates/tet:link-template /tet:te-link-attributes /tet:interface-switching-capability: +--rw packet-switch-capable +--rw minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--rw interface-mtu? uint16 augment /nw:networks/nw:network/nt:link/tet:te /tet:te-link-attributes /tet:interface-switching-capability: +--rw packet-switch-capable +--rw minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--rw interface-mtu? uint16 augment /nw:networks/nw:network/nt:link/tet:te /tet:information-source-entry /tet:interface-switching-capability: +--ro packet-switch-capable +--ro minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--ro interface-mtu? uint16 Liu, et al. Expires January 2, 2019 [Page 5] Internet-Draft YANG L3 TE Topology July 2018 3.2. Performance Metric [RFC7471], [RFC7810] and [RFC7823] specify TE performance metric parameters and their usage. The packet switching augmentations specified in this moducment support such a capability, which can be conditional enabled by a YANG feature "te-performance-metric". augment /nw:networks/nw:network/nw:node/tet:te /tet:te-node-attributes/tet:connectivity-matrices: +--rw performance-metric +--rw measurement | ...... +--rw normality | ...... +--rw throttle ...... Such an augmentation has been applied to: o Connectivity matrices container o Connectivity matrix entry o Local ink connectivities container o Local ink connectivity entry o TE link attributes containr in a TE link template o TE link attributes containr in a TE link o TE link attributes containr in a TE link o Information source entry in a TE link 4. Model Structure 4.1. Layer 3 TE Topology Module The model tree structure of the layer 3 TE topology module is as shown below: Liu, et al. Expires January 2, 2019 [Page 6] Internet-Draft YANG L3 TE Topology July 2018 module: ietf-l3-te-topology augment /nw:networks/nw:network/nw:network-types /l3t:l3-unicast-topology: +--rw l3-te! augment /nw:networks/nw:network/l3t:l3-topology-attributes: +--rw l3-te-topology-attributes +--rw network-ref? -> /nw:networks/network/network-id augment /nw:networks/nw:network/nw:node/l3t:l3-node-attributes: +--rw l3-te-node-attributes +--rw node-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id augment /nw:networks/nw:network/nw:node/nt:termination-point /l3t:l3-termination-point-attributes: +--rw l3-te-tp-attributes +--rw tp-ref? leafref +--rw node-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id augment /nw:networks/nw:network/nt:link/l3t:l3-link-attributes: +--rw l3-te-link-attributes +--rw link-ref? leafref +--rw network-ref? -> /nw:networks/network/network-id 4.2. Packet Switching TE Topology Module This is an augmentation to base TE topology model. module: ietf-te-topology-packet augment /nw:networks/nw:network/nw:node/tet:te /tet:te-node-attributes/tet:connectivity-matrices: +--rw 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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? Liu, et al. Expires January 2, 2019 [Page 7] Internet-Draft YANG L3 TE Topology July 2018 | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--rw throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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 Liu, et al. Expires January 2, 2019 [Page 8] Internet-Draft YANG L3 TE Topology July 2018 +--rw unidirectional-residual-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nw:node/tet:te /tet:te-node-attributes/tet:connectivity-matrices /tet:connectivity-matrix: +--rw 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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--rw throttle +--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 Liu, et al. Expires January 2, 2019 [Page 9] Internet-Draft YANG L3 TE Topology July 2018 | +--rw unidirectional-delay-variation? uint32 | +--rw unidirectional-packet-loss? decimal64 | +--rw unidirectional-residual-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nw:node/tet:te /tet:information-source-entry/tet:connectivity-matrices: +--ro 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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro normality Liu, et al. Expires January 2, 2019 [Page 10] Internet-Draft YANG L3 TE Topology July 2018 | +--ro unidirectional-delay? | | te-types:performance-metric-normality | +--ro unidirectional-min-delay? | | te-types:performance-metric-normality | +--ro unidirectional-max-delay? | | te-types:performance-metric-normality | +--ro unidirectional-delay-variation? | | te-types:performance-metric-normality | +--ro unidirectional-packet-loss? | | te-types:performance-metric-normality | +--ro unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--ro throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro threshold-accelerated-advertisement +--ro unidirectional-delay? uint32 +--ro unidirectional-min-delay? uint32 Liu, et al. Expires January 2, 2019 [Page 11] Internet-Draft YANG L3 TE Topology July 2018 +--ro unidirectional-max-delay? uint32 +--ro unidirectional-delay-variation? uint32 +--ro unidirectional-packet-loss? decimal64 +--ro unidirectional-residual-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nw:node/tet:te /tet:information-source-entry/tet:connectivity-matrices /tet:connectivity-matrix: +--ro 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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro normality | +--ro unidirectional-delay? | | te-types:performance-metric-normality | +--ro unidirectional-min-delay? | | te-types:performance-metric-normality | +--ro unidirectional-max-delay? | | te-types:performance-metric-normality | +--ro unidirectional-delay-variation? | | te-types:performance-metric-normality | +--ro unidirectional-packet-loss? | | te-types:performance-metric-normality | +--ro unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--ro throttle +--ro unidirectional-delay-offset? uint32 +--ro measure-interval? uint32 +--ro advertisement-interval? uint32 +--ro suppression-interval? uint32 +--ro threshold-out Liu, et al. Expires January 2, 2019 [Page 12] Internet-Draft YANG L3 TE Topology July 2018 | +--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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nw:node/tet:te /tet:tunnel-termination-point /tet:local-link-connectivities: +--rw 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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? Liu, et al. Expires January 2, 2019 [Page 13] Internet-Draft YANG L3 TE Topology July 2018 | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--rw throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? Liu, et al. Expires January 2, 2019 [Page 14] Internet-Draft YANG L3 TE Topology July 2018 | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nw:node/tet:te /tet:tunnel-termination-point /tet:local-link-connectivities /tet:local-link-connectivity: +--rw 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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--rw throttle Liu, et al. Expires January 2, 2019 [Page 15] Internet-Draft YANG L3 TE Topology July 2018 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/tet:te/tet:templates/tet:link-template /tet:te-link-attributes: +--rw performance-metric +--rw measurement | +--rw unidirectional-delay? uint32 | +--rw unidirectional-min-delay? uint32 | +--rw unidirectional-max-delay? uint32 | +--rw unidirectional-delay-variation? uint32 Liu, et al. Expires January 2, 2019 [Page 16] Internet-Draft YANG L3 TE Topology July 2018 | +--rw unidirectional-packet-loss? decimal64 | +--rw unidirectional-residual-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--rw throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? Liu, et al. Expires January 2, 2019 [Page 17] Internet-Draft YANG L3 TE Topology July 2018 | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nt:link/tet:te /tet:te-link-attributes: +--rw 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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw normality | +--rw unidirectional-delay? | | te-types:performance-metric-normality | +--rw unidirectional-min-delay? | | te-types:performance-metric-normality | +--rw unidirectional-max-delay? | | te-types:performance-metric-normality | +--rw unidirectional-delay-variation? | | te-types:performance-metric-normality | +--rw unidirectional-packet-loss? | | te-types:performance-metric-normality | +--rw unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--rw unidirectional-utilized-bandwidth? Liu, et al. Expires January 2, 2019 [Page 18] Internet-Draft YANG L3 TE Topology July 2018 | te-types:performance-metric-normality +--rw throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--rw unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--rw unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/nw:network/nt:link/tet:te /tet:information-source-entry: +--ro performance-metric +--ro measurement | +--ro unidirectional-delay? uint32 | +--ro unidirectional-min-delay? uint32 Liu, et al. Expires January 2, 2019 [Page 19] Internet-Draft YANG L3 TE Topology July 2018 | +--ro unidirectional-max-delay? uint32 | +--ro unidirectional-delay-variation? uint32 | +--ro unidirectional-packet-loss? decimal64 | +--ro unidirectional-residual-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro normality | +--ro unidirectional-delay? | | te-types:performance-metric-normality | +--ro unidirectional-min-delay? | | te-types:performance-metric-normality | +--ro unidirectional-max-delay? | | te-types:performance-metric-normality | +--ro unidirectional-delay-variation? | | te-types:performance-metric-normality | +--ro unidirectional-packet-loss? | | te-types:performance-metric-normality | +--ro unidirectional-residual-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-available-bandwidth? | | te-types:performance-metric-normality | +--ro unidirectional-utilized-bandwidth? | te-types:performance-metric-normality +--ro throttle +--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? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro threshold-in | +--ro unidirectional-delay? uint32 | +--ro unidirectional-min-delay? uint32 | +--ro unidirectional-max-delay? uint32 | +--ro unidirectional-delay-variation? uint32 Liu, et al. Expires January 2, 2019 [Page 20] Internet-Draft YANG L3 TE Topology July 2018 | +--ro unidirectional-packet-loss? decimal64 | +--ro unidirectional-residual-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-available-bandwidth? | | rt-types:bandwidth-ieee-float32 | +--ro unidirectional-utilized-bandwidth? | rt-types:bandwidth-ieee-float32 +--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? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-available-bandwidth? | rt-types:bandwidth-ieee-float32 +--ro unidirectional-utilized-bandwidth? rt-types:bandwidth-ieee-float32 augment /nw:networks/tet:te/tet:templates/tet:link-template /tet:te-link-attributes /tet:interface-switching-capability: +--rw packet-switch-capable +--rw minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--rw interface-mtu? uint16 augment /nw:networks/nw:network/nt:link/tet:te /tet:te-link-attributes /tet:interface-switching-capability: +--rw packet-switch-capable +--rw minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--rw interface-mtu? uint16 augment /nw:networks/nw:network/nt:link/tet:te /tet:information-source-entry /tet:interface-switching-capability: +--ro packet-switch-capable +--ro minimum-lsp-bandwidth? rt-types:bandwidth-ieee-float32 +--ro interface-mtu? uint16 5. YANG Modules 5.1. Layer 3 TE Topology Module This module references [RFC8345], [RFC8346], and [I-D.ietf-teas-yang-te-topo]. file "ietf-l3-te-topology@2018-06-22.yang" Liu, et al. Expires January 2, 2019 [Page 21] Internet-Draft YANG L3 TE Topology July 2018 module ietf-l3-te-topology { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-l3-te-topology"; prefix "l3tet"; import ietf-network { prefix "nw"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-network-topology { prefix "nt"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-l3-unicast-topology { prefix "l3t"; reference "RFC 8346: A YANG Data Model for Layer 3 Topologies"; } import ietf-te-topology { prefix "tet"; reference "I-D.ietf-teas-yang-te-topo: YANG Data Model for Traffic Engineering (TE) Topologies"; } organization "IETF Traffic Engineering Architecture and Signaling (TEAS) Working Group"; contact "WG Web: WG List: Editor: Xufeng Liu Editor: Igor Bryskin Editor: Vishnu Pavan Beeram Editor: Tarek Saad Editor: Himanshu Shah Editor: Oscar Gonzalez De Dios Liu, et al. Expires January 2, 2019 [Page 22] Internet-Draft YANG L3 TE Topology July 2018 "; description "YANG data model for representing and manipulating Layer 3 TE Topologies. Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; revision 2018-06-22 { description "Initial revision"; reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies"; } grouping l3-te-topology-type { description "Identifies the L3 TE topology type."; container l3-te { presence "indiates L3 TE Topology"; description "Its presence identifies the L3 TE topology type."; } } augment "/nw:networks/nw:network/nw:network-types/" + "l3t:l3-unicast-topology" { description "Defines the L3 TE topology type."; uses l3-te-topology-type; } augment "/nw:networks/nw:network/l3t:l3-topology-attributes" { when "../nw:network-types/l3t:l3-unicast-topology/l3tet:l3-te" { description "Augment only for L3 TE topology"; } description "Augment topology configuration"; uses l3-te-topology-attributes; Liu, et al. Expires January 2, 2019 [Page 23] Internet-Draft YANG L3 TE Topology July 2018 } augment "/nw:networks/nw:network/nw:node/l3t:l3-node-attributes" { when "../../nw:network-types/l3t:l3-unicast-topology/" + "l3tet:l3-te" { description "Augment only for L3 TE topology"; } description "Augment node configuration"; uses l3-te-node-attributes; } augment "/nw:networks/nw:network/nw:node/nt:termination-point/" + "l3t:l3-termination-point-attributes" { when "../../../nw:network-types/l3t:l3-unicast-topology/" + "l3tet:l3-te" { description "Augment only for L3 TE topology"; } description "Augment termination point configuration"; uses l3-te-tp-attributes; } augment "/nw:networks/nw:network/nt:link/l3t:l3-link-attributes" { when "../../nw:network-types/l3t:l3-unicast-topology/" + "l3tet:l3-te" { description "Augment only for L3 TE topology"; } description "Augment link configuration"; uses l3-te-link-attributes; } grouping l3-te-topology-attributes { description "L3 TE topology scope attributes"; container l3-te-topology-attributes { must "/nw:networks/nw:network" + "[nw:network-id = current()/network-ref]/nw:network-types/" + "tet:te-topology" { error-message "The referenced network must be a TE topology."; description "The referenced network must be a TE topology."; } description "Containing TE topology references"; uses nw:network-ref; } // l3-te-topology-attributes } // l3-te-topology-attributes grouping l3-te-node-attributes { description "L3 TE node scope attributes"; Liu, et al. Expires January 2, 2019 [Page 24] Internet-Draft YANG L3 TE Topology July 2018 container l3-te-node-attributes { must "/nw:networks/nw:network" + "[nw:network-id = current()/network-ref]/nw:network-types/" + "tet:te-topology" { error-message "The referenced network must be a TE topology."; description "The referenced network must be a TE topology."; } description "Containing TE node references"; uses nw:node-ref; } // l3-te } // l3-te-node-attributes grouping l3-te-tp-attributes { description "L3 TE termination point scope attributes"; container l3-te-tp-attributes { must "/nw:networks/nw:network" + "[nw:network-id = current()/network-ref]/nw:network-types/" + "tet:te-topology" { error-message "The referenced network must be a TE topology."; description "The referenced network must be a TE topology."; } description "Containing TE termination point references"; uses nt:tp-ref; } // l3-te } // l3-te-tp-attributes grouping l3-te-link-attributes { description "L3 TE link scope attributes"; container l3-te-link-attributes { must "/nw:networks/nw:network" + "[nw:network-id = current()/network-ref]/nw:network-types/" + "tet:te-topology" { error-message "The referenced network must be a TE topology."; description "The referenced network must be a TE topology."; } description "Containing TE link references"; uses nt:link-ref; } } // l3-te-link-attributes } Liu, et al. Expires January 2, 2019 [Page 25] Internet-Draft YANG L3 TE Topology July 2018 5.2. Packet Switching TE Topology Module This module references [RFC7471], [RFC7810], [RFC7823], [RFC8294], [RFC8345], [RFC8346]. [I-D.ietf-teas-yang-te], and [I-D.ietf-teas-yang-te-topo]. file "ietf-te-topology-packet@2018-06-22.yang" module ietf-te-topology-packet { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology-packet"; prefix "tet-pkt"; import ietf-network { prefix "nw"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-network-topology { prefix "nt"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-routing-types { prefix "rt-types"; reference "RFC 8294: Common YANG Data Types for the Routing Area"; } import ietf-te-topology { prefix "tet"; reference "I-D.ietf-teas-yang-te-topo: YANG Data Model for Traffic Engineering (TE) Topologies"; } import ietf-te-types { prefix "te-types"; reference "I-D.ietf-teas-yang-te: A YANG Data Model for Traffic Engineering Tunnels and Interfaces"; } organization "Traffic Engineering Architecture and Signaling (TEAS) Working Group"; Liu, et al. Expires January 2, 2019 [Page 26] Internet-Draft YANG L3 TE Topology July 2018 contact "WG Web: WG List: Editor: Xufeng Liu Editor: Igor Bryskin Editor: Vishnu Pavan Beeram Editor: Tarek Saad Editor: Himanshu Shah Editor: Oscar Gonzalez De Dios "; description "YANG data model for representing and manipulating PSC (Packet Switching) TE Topologies. Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; revision 2018-06-22 { description "Initial revision"; reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies"; } /* * Features */ Liu, et al. Expires January 2, 2019 [Page 27] Internet-Draft YANG L3 TE Topology July 2018 feature te-performance-metric { description "This feature indicates that the system supports TE performance metric."; reference "RFC7471: OSPF Traffic Engineering (TE) Metric Extensions. RFC7810: IS-IS Traffic Engineering (TE) Metric Extensions. RFC7823: Performance-Based Path Selection for Explicitly Routed Label Switched Paths (LSPs) Using TE Metric Extensions"; } /* * Groupings */ grouping packet-switch-capable-container { description "The container of packet switch capable attributes."; container packet-switch-capable { description "Interface has packet-switching capabilities."; leaf minimum-lsp-bandwidth { type rt-types:bandwidth-ieee-float32; description "Minimum LSP Bandwidth. Units in bytes per second"; } leaf interface-mtu { type uint16; description "Interface MTU."; } } } /* * Augmentations */ /* Augmentations to connectivity-matrix */ augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:te-node-attributes/tet:connectivity-matrices" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nw:node/tet:te/" Liu, et al. Expires January 2, 2019 [Page 28] Internet-Draft YANG L3 TE Topology July 2018 + "tet:te-node-attributes/tet:connectivity-matrices/" + "tet:connectivity-matrix" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:information-source-entry/tet:connectivity-matrices" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:information-source-entry/tet:connectivity-matrices/" + "tet:connectivity-matrix" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } /* Augmentations to tunnel-termination-point */ augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:tunnel-termination-point/" + "tet:local-link-connectivities" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:tunnel-termination-point/" + "tet:local-link-connectivities/" + "tet:local-link-connectivity" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } Liu, et al. Expires January 2, 2019 [Page 29] Internet-Draft YANG L3 TE Topology July 2018 } /* Augmentations to te-link-attributes */ augment "/nw:networks/tet:te/tet:templates/" + "tet:link-template/tet:te-link-attributes" { when "tet:interface-switching-capability " + "[tet:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nt:link/tet:te/" + "tet:te-link-attributes" { when "tet:interface-switching-capability " + "[tet:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } augment "/nw:networks/nw:network/nt:link/tet:te/" + "tet:information-source-entry" { when "tet:interface-switching-capability " + "[tet:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature te-performance-metric; } } /* Augmentations to interface-switching-capability */ augment "/nw:networks/tet:te/tet:templates/" + "tet:link-template/tet:te-link-attributes/" + "tet:interface-switching-capability" { when "tet:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; Liu, et al. Expires January 2, 2019 [Page 30] Internet-Draft YANG L3 TE Topology July 2018 } description "Parameters for PSC TE topology."; uses packet-switch-capable-container; } augment "/nw:networks/nw:network/nt:link/tet:te/" + "tet:te-link-attributes/" + "tet:interface-switching-capability" { when "tet:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses packet-switch-capable-container; } augment "/nw:networks/nw:network/nt:link/tet:te/" + "tet:information-source-entry/" + "tet:interface-switching-capability" { when "tet:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses packet-switch-capable-container; } } 6. IANA Considerations RFC Ed.: In this section, replace all occurrences of 'XXXX' with the actual RFC number (and remove this note). This document registers the following namespace URIs in the IETF XML registry [RFC3688]: -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- Liu, et al. Expires January 2, 2019 [Page 31] Internet-Draft YANG L3 TE Topology July 2018 -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-te-topology-packet Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-te-topology-packet-state Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- This document registers the following YANG modules in the YANG Module Names registry [RFC6020]: -------------------------------------------------------------------- name: ietf-l3-te-topology namespace: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology prefix: l3te reference: RFC XXXX -------------------------------------------------------------------- -------------------------------------------------------------------- name: ietf-l3-te-topology-state namespace: urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state prefix: l3te-s reference: RFC XXXX -------------------------------------------------------------------- -------------------------------------------------------------------- name: ietf-te-topology-packet namespace: urn:ietf:params:xml:ns:yang:ietf-te-topology-packet prefix: tet-pkt reference: RFC XXXX -------------------------------------------------------------------- -------------------------------------------------------------------- name: ietf-te-topology-packet-state namespace: urn:ietf:params:xml:ns:yang:ietf-te-topology-packet-state prefix: tet-pkt-s reference: RFC XXXX -------------------------------------------------------------------- Liu, et al. Expires January 2, 2019 [Page 32] Internet-Draft YANG L3 TE Topology July 2018 7. Security Considerations The YANG module specified in this document defines a schema for data that is designed to be accessed via network management protocols such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC5246]. The NETCONF access control model [RFC6536] provides the means to restrict access for particular NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and content. There are a number of data nodes defined in this YANG module that are writable/creatable/deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations (e.g., edit-config) to these data nodes without proper protection can have a negative effect on network operations. These are the subtrees and data nodes and their sensitivity/vulnerability: /nw:networks/nw:network/nw:network-types/l3t:l3-unicast-topology/ l3-te This subtree specifies the layer 3 TE topology type. Modifying the configurations can make layer 3 TE topology type invalid and cause interruption to all layer 3 TE networks. /nw:networks/nw:network/l3t:l3-topology-attributes/l3-te-topology- attributes This subtree specifies the topology-wide configurations, including the reference to a TE topology from a layer 3 network topolopy. Modifying the configurations here can cause traffic disabled or rerouted in this topology and the connected topologies. /nw:networks/nw:network/nw:node/l3t:l3-node-attributes/l3-te-node- attributes This subtree specifies the configurations of layer 3 TE nodes. Modifying the configurations in this subtree can change the relationship between a TE node and a layer 3 node, causing traffic disabled or rerouted in the specified nodes and the related layer 3 topologies. /nw:networks/nw:network/nw:node/nt:termination-point//l3t:l3- termination-point-attributes/l3-te-tp-attributes This subtree specifies the configurations of layer 3 TE link termination points. Modifying the configurations in this subtree Liu, et al. Expires January 2, 2019 [Page 33] Internet-Draft YANG L3 TE Topology July 2018 can change the relationship between a TE link termination point and a layer 3 link termination point, causing traffic disabled or rerouted on the related layer 3 links and the related layer 3 topologies. /nw:networks/nw:network/nt:link/l3t:l3-link-attributes/l3-te-link- attributes This subtree specifies the configurations of layer 3 TE links. Modifying the configurations in this subtree can change the relationship between a TE link and a layer 3 link, causing traffic disabled or rerouted on the specified layer 3 link and the related layer 3 topologies. performance-metric containers The container "performance-metric" is augmented to multiple locations of the base TE topology model, as specified in Section 3.2. Modifying the configuration in such a container can change the behavours of performance metric monitoring, causing traffic disabled or rerouted on the related layer 3 links, nodes, or topologies. Some of the readable data nodes in this YANG module may be considered sensitive or vulnerable in some network environments. It is thus important to control read access (e.g., via get, get-config, or notification) to these data nodes. These are the subtrees and data nodes and their sensitivity/vulnerability: /nw:networks/nw:network/nw:network-types/l3t:l3-unicast-topology/ l3-te Unauthorized access to this subtree can disclose the layer 3 TE topology type. /nw:networks/nw:network/l3t:l3-topology-attributes/l3-te-topology- attributes Unauthorized access to this subtree can disclose the topology-wide configurations, including the reference to a TE topology from a layer 3 network topolopy. /nw:networks/nw:network/nw:node/l3t:l3-node-attributes/l3-te-node- attributes Unauthorized access to this subtree can disclose the operational state information of layer 3 TE nodes. /nw:networks/nw:network/nw:node/nt:termination-point//l3t:l3- termination-point-attributes/l3-te-tp-attributes Unauthorized access to this subtree can disclose the operational state information of layer 3 TE link termination points. Liu, et al. Expires January 2, 2019 [Page 34] Internet-Draft YANG L3 TE Topology July 2018 /nw:networks/nw:network/nt:link/l3t:l3-link-attributes/l3-te-link- attributes Unauthorized access to this subtree can disclose the operational state information of layer 3 TE links. performance-metric containers The container "performance-metric" is augmented to multiple locations of the base TE topology model, as specified in Section 3.2. Unauthorized access to this subtree can disclose the operational state information of performance metric monitoring. 8. References 8.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC5246] Dierks, T. and E. Rescorla, "The Transport Layer Security (TLS) Protocol Version 1.2", RFC 5246, DOI 10.17487/RFC5246, August 2008, . [RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011, . [RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011, . [RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration Protocol (NETCONF) Access Control Model", RFC 6536, DOI 10.17487/RFC6536, March 2012, . [RFC7471] Giacalone, S., Ward, D., Drake, J., Atlas, A., and S. Previdi, "OSPF Traffic Engineering (TE) Metric Extensions", RFC 7471, DOI 10.17487/RFC7471, March 2015, . [RFC7810] Previdi, S., Ed., Giacalone, S., Ward, D., Drake, J., and Q. Wu, "IS-IS Traffic Engineering (TE) Metric Extensions", RFC 7810, DOI 10.17487/RFC7810, May 2016, . Liu, et al. Expires January 2, 2019 [Page 35] Internet-Draft YANG L3 TE Topology July 2018 [RFC7823] Atlas, A., Drake, J., Giacalone, S., and S. Previdi, "Performance-Based Path Selection for Explicitly Routed Label Switched Paths (LSPs) Using TE Metric Extensions", RFC 7823, DOI 10.17487/RFC7823, May 2016, . [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, . [RFC8040] Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017, . [RFC8294] Liu, X., Qu, Y., Lindem, A., Hopps, C., and L. Berger, "Common YANG Data Types for the Routing Area", RFC 8294, DOI 10.17487/RFC8294, December 2017, . [RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018, . [RFC8345] Clemm, A., Medved, J., Varga, R., Bahadur, N., Ananthakrishnan, H., and X. Liu, "A YANG Data Model for Network Topologies", RFC 8345, DOI 10.17487/RFC8345, March 2018, . [RFC8346] Clemm, A., Medved, J., Varga, R., Liu, X., Ananthakrishnan, H., and N. Bahadur, "A YANG Data Model for Layer 3 Topologies", RFC 8346, DOI 10.17487/RFC8346, March 2018, . [I-D.ietf-teas-yang-te] Saad, T., Gandhi, R., Liu, X., Beeram, V., Shah, H., and I. Bryskin, "A YANG Data Model for Traffic Engineering Tunnels and Interfaces", draft-ietf-teas-yang-te-15 (work in progress), June 2018. [I-D.ietf-teas-yang-te-topo] Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and O. Dios, "YANG Data Model for Traffic Engineering (TE) Topologies", draft-ietf-teas-yang-te-topo-18 (work in progress), June 2018. Liu, et al. Expires January 2, 2019 [Page 36] Internet-Draft YANG L3 TE Topology July 2018 8.2. Informative References [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, . Liu, et al. Expires January 2, 2019 [Page 37] Internet-Draft YANG L3 TE Topology July 2018 Appendix A. Companion YANG Model for Non-NMDA Compliant Implementations The YANG modules ietf-l3-te-topology and ietf-te-topology-packet defined in this document are designed to be used in conjunction with implementations that support the Network Management Datastore Architecture (NMDA) defined in [RFC8342]. In order to allow implementations to use the model even in cases when NMDA is not supported, the following companion modules, ietf-l3-te-topology-state and ietf-te-topology-packet-state, are defined as state models, which mirror the modules ietf-l3-te-topology and ietf-te-topology-packet defined earlier in this document. However, all data nodes in the companion module are non-configurable, to represent the applied configuration or the derived operational states. The companion modules, ietf-l3-te-topology-state and ietf-te- topology-packet-state, are redundant and SHOULD NOT be supported by implementations that support NMDA. As the structure of the companion modules mirrors that of the coorespinding NMDA models, the YANG trees of the companion modules are not depicted separately. A.1. Layer 3 TE Topology State Module This module references [RFC8345], and [RFC8346]. file "ietf-l3-te-topology-state@2018-06-22.yang" module ietf-l3-te-topology-state { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-l3-te-topology-state"; prefix "l3tet-s"; import ietf-l3-te-topology { prefix "l3tet"; } import ietf-network-state { prefix "nw-s"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-network-topology-state { prefix "nt-s"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-l3-unicast-topology-state { prefix "l3t-s"; reference "RFC 8346: A YANG Data Model for Layer 3 Topologies"; } Liu, et al. Expires January 2, 2019 [Page 38] Internet-Draft YANG L3 TE Topology July 2018 organization "IETF Traffic Engineering Architecture and Signaling (TEAS) Working Group"; contact "WG Web: WG List: Editor: Xufeng Liu Editor: Igor Bryskin Editor: Vishnu Pavan Beeram Editor: Tarek Saad Editor: Himanshu Shah Editor: Oscar Gonzalez De Dios "; description "YANG data model for representing operational state information of Layer 3 TE Topologies, when NMDA is not supported. Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; revision 2018-06-22 { description "Initial revision"; reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies"; } Liu, et al. Expires January 2, 2019 [Page 39] Internet-Draft YANG L3 TE Topology July 2018 augment "/nw-s:networks/nw-s:network/nw-s:network-types/" + "l3t-s:l3-unicast-topology" { description "Defines the L3 TE topology type."; uses l3tet:l3-te-topology-type; } augment "/nw-s:networks/nw-s:network/" + "l3t-s:l3-topology-attributes" { when "../nw-s:network-types/l3t-s:l3-unicast-topology/" + "l3tet-s:l3-te" { description "Augment only for L3 TE topology"; } description "Augment topology configuration"; uses l3tet:l3-te-topology-attributes; } augment "/nw-s:networks/nw-s:network/nw-s:node/" + "l3t-s:l3-node-attributes" { when "../../nw-s:network-types/l3t-s:l3-unicast-topology/" + "l3tet-s:l3-te" { description "Augment only for L3 TE topology"; } description "Augment node configuration"; uses l3tet:l3-te-node-attributes; } augment "/nw-s:networks/nw-s:network/nw-s:node/" + "nt-s:termination-point/" + "l3t-s:l3-termination-point-attributes" { when "../../../nw-s:network-types/l3t-s:l3-unicast-topology/" + "l3tet-s:l3-te" { description "Augment only for L3 TE topology"; } description "Augment termination point configuration"; uses l3tet:l3-te-tp-attributes; } augment "/nw-s:networks/nw-s:network/nt-s:link/" + "l3t-s:l3-link-attributes" { when "../../nw-s:network-types/l3t-s:l3-unicast-topology/" + "l3tet-s:l3-te" { description "Augment only for L3 TE topology"; } description "Augment link configuration"; uses l3tet:l3-te-link-attributes; } } Liu, et al. Expires January 2, 2019 [Page 40] Internet-Draft YANG L3 TE Topology July 2018 A.2. Packet Switching TE Topology State Module file "ietf-te-topology-packet-state@2018-06-22.yang" module ietf-te-topology-packet-state { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology-packet-state"; prefix "tet-pkt-s"; import ietf-te-topology-packet { prefix "tet-pkt"; } import ietf-network-state { prefix "nw-s"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-network-topology-state { prefix "nt-s"; reference "RFC 8345: A YANG Data Model for Network Topologies"; } import ietf-te-topology-state { prefix "tet-s"; reference "I-D.ietf-teas-yang-te-topo: YANG Data Model for Traffic Engineering (TE) Topologies"; } import ietf-te-types { prefix "te-types"; reference "I-D.ietf-teas-yang-te: A YANG Data Model for Traffic Engineering Tunnels and Interfaces"; } organization "Traffic Engineering Architecture and Signaling (TEAS) Working Group"; contact Liu, et al. Expires January 2, 2019 [Page 41] Internet-Draft YANG L3 TE Topology July 2018 "WG Web: WG List: Editor: Xufeng Liu Editor: Igor Bryskin Editor: Vishnu Pavan Beeram Editor: Tarek Saad Editor: Himanshu Shah Editor: Oscar Gonzalez De Dios "; description "YANG data model for representing operational state information of PSC (Packet Switching) TE Topologies, when NMDA is not supported. Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; revision 2018-06-22 { description "Initial revision"; reference "RFC XXXX: YANG Data Model for Layer 3 TE Topologies"; } /* * Augmentations */ /* Augmentations to connectivity-matrix */ Liu, et al. Expires January 2, 2019 [Page 42] Internet-Draft YANG L3 TE Topology July 2018 augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:te-node-attributes/tet-s:connectivity-matrices" { description "Parameters for PSC (Packet Switching) TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:te-node-attributes/tet-s:connectivity-matrices/" + "tet-s:connectivity-matrix" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:information-source-entry/" + "tet-s:connectivity-matrices" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:information-source-entry/" + "tet-s:connectivity-matrices/" + "tet-s:connectivity-matrix" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } /* Augmentations to tunnel-termination-point */ augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:tunnel-termination-point/" + "tet-s:local-link-connectivities" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; Liu, et al. Expires January 2, 2019 [Page 43] Internet-Draft YANG L3 TE Topology July 2018 } } augment "/nw-s:networks/nw-s:network/nw-s:node/tet-s:te/" + "tet-s:tunnel-termination-point/" + "tet-s:local-link-connectivities/" + "tet-s:local-link-connectivity" { description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } /* Augmentations to te-link-attributes */ augment "/nw-s:networks/tet-s:te/tet-s:templates/" + "tet-s:link-template/tet-s:te-link-attributes" { when "tet-s:interface-switching-capability " + "[tet-s:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/" + "tet-s:te-link-attributes" { when "tet-s:interface-switching-capability " + "[tet-s:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/" + "tet-s:information-source-entry" { when "tet-s:interface-switching-capability " + "[tet-s:switching-capability = 'te-types:switching-psc1']" { description "Valid only for PSC"; } description Liu, et al. Expires January 2, 2019 [Page 44] Internet-Draft YANG L3 TE Topology July 2018 "Parameters for PSC TE topology."; uses te-types:performance-metric-container { if-feature tet-pkt:te-performance-metric; } } /* Augmentations to interface-switching-capability */ augment "/nw-s:networks/tet-s:te/tet-s:templates/" + "tet-s:link-template/tet-s:te-link-attributes/" + "tet-s:interface-switching-capability" { when "tet-s:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses tet-pkt:packet-switch-capable-container; } augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/" + "tet-s:te-link-attributes/" + "tet-s:interface-switching-capability" { when "tet-s:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses tet-pkt:packet-switch-capable-container; } augment "/nw-s:networks/nw-s:network/nt-s:link/tet-s:te/" + "tet-s:information-source-entry/" + "tet-s:interface-switching-capability" { when "tet-s:switching-capability = 'te-types:switching-psc1' " { description "Valid only for PSC"; } description "Parameters for PSC TE topology."; uses tet-pkt:packet-switch-capable-container; } } Liu, et al. Expires January 2, 2019 [Page 45] Internet-Draft YANG L3 TE Topology July 2018 Authors' Addresses Xufeng Liu Volta Networks EMail: xufeng.liu.ietf@gmail.com Igor Bryskin Huawei Technologies EMail: Igor.Bryskin@huawei.com Vishnu Pavan Beeram Juniper Networks EMail: vbeeram@juniper.net Tarek Saad Cisco Systems Inc EMail: tsaad@cisco.com Himanshu Shah Ciena EMail: hshah@ciena.com Oscar Gonzalez de Dios Telefonica EMail: oscar.gonzalezdedios@telefonica.com Liu, et al. Expires January 2, 2019 [Page 46]