CCAMP Working Group H. Zheng Internet-Draft I. Busi Intended status: Standards Track Huawei Technologies Expires: 8 September 2022 S. Belotti V. Lopez Nokia Y. Xu CAICT 7 March 2022 OTN Tunnel YANG Model draft-ietf-ccamp-otn-tunnel-model-15 Abstract This document describes the YANG data model for tunnels in OTN TE networks. The model can be used to do the configuration in order to establish the tunnel in OTN network. This work is independent with the control plane protocols. The YANG data model defined in this document conforms to the Network Management Datastore Architecture (NMDA). 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 8 September 2022. Copyright Notice Copyright (c) 2022 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 publication of this document. Zheng, et al. Expires 8 September 2022 [Page 1] Internet-Draft OTN Tunnel YANG Model March 2022 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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Terminology and Notations . . . . . . . . . . . . . . . . . . 2 3. OTN Tunnel Model Description . . . . . . . . . . . . . . . . 3 3.1. Overview of OTN Tunnel Model . . . . . . . . . . . . . . 3 3.2. Bandwidth Augmentation . . . . . . . . . . . . . . . . . 4 3.3. Label Augmentation . . . . . . . . . . . . . . . . . . . 4 4. OTN Tunnel YANG Tree . . . . . . . . . . . . . . . . . . . . 4 5. OTN Tunnel YANG Code . . . . . . . . . . . . . . . . . . . . 21 6. Security Considerations . . . . . . . . . . . . . . . . . . . 42 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 43 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 43 9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 43 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 43 10.1. Normative References . . . . . . . . . . . . . . . . . . 44 10.2. Informative References . . . . . . . . . . . . . . . . . 45 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 46 1. Introduction OTN transport networks, specified in [ITU-Tg709], can carry various types of client signals. In many cases, the client signal is carried over an OTN tunnel across connected domains in a multi-domain network. This document provides YANG model for creating OTN tunnel. The model augments the generic TE Tunnel model specified in [I-D.ietf-teas-yang-te]. 2. Terminology and Notations A simplified graphical representation of the data model is used in this document. The meaning of the symbols in the YANG data tree presented later in this draft is defined in [RFC8340]. They are provided below for reference. * Brackets "[" and "]" enclose list keys. * Abbreviations before data node names: "rw" means configuration (read-write) and "ro" state data (read-only). Zheng, et al. Expires 8 September 2022 [Page 2] Internet-Draft OTN Tunnel YANG Model March 2022 * Symbols after data node names: "?" means an optional node, "!" means a presence container, and "*" denotes a list and leaf-list. * Parentheses enclose choice and case nodes, and case nodes are also marked with a colon (":"). * Ellipsis ("...") stands for contents of subtrees that are not shown. * More OTN specific terms can be found in [I-D.ietf-ccamp-otn-topo-yang]. 3. OTN Tunnel Model Description 3.1. Overview of OTN Tunnel Model This document aims to describe the data model for OTN tunnel. The OTN tunnel model is using TE tunnel [I-D.ietf-teas-yang-te] as a basic model and augments it with OTN-specific parameters, including the bandwidth information and label information. Figure 1 shows the augmentation relationship. +----------------+ TE generic | ietf-te | +----------------+ ^ | | Augments | +--------+--------+ OTN | ietf-otn-tunnel | +-----------------+ Figure 1 - Relationship between OTN and TE tunnel models It is also worth noting that the OTN tunnel provisioning is usually based on the OTN topology. Therefore the OTN tunnel model is usually used together with OTN topology model specified in [I-D.ietf-ccamp-otn-topo-yang]. The OTN tunnel model also imports a few type modules, including ietf-layer1-types, ietf-te-types and ietf-inet-types. The OTN-specific attributes in [RFC7139], including the Tributary Slot (TS) and Tributary Port Number (TPN), can be used to represent the bandwidth and label information. These attributes have been specified in [I-D.ietf-ccamp-layer1-types] and used in this document for augmentation of the generic TE tunnel model. Zheng, et al. Expires 8 September 2022 [Page 3] Internet-Draft OTN Tunnel YANG Model March 2022 More scenarios and model applications can be found in [I-D.ietf-ccamp-transport-nbi-app-statement] and [I-D.ietf-teas-actn-yang]. The YANG module ietf-otn-tunnel defined in this document conforms to the Network Management Datastore Architecture (NMDA) defined in [RFC8342]. 3.2. Bandwidth Augmentation The model augments all the occurrences of the te-bandwidth container with the OTN technology specific attributes using the otn-link- bandwidth and otn-path-bandwidth groupings defined in [I-D.ietf-ccamp-layer1-types]. 3.3. Label Augmentation The model augments all the occurrences of the label-restriction list with OTN technology specific attributes using the otn-label-range- info grouping defined in [I-D.ietf-ccamp-layer1-types]. Moreover, the model augments all the occurrences of the te-label container with the OTN technology specific attributes using the otn- label-start-end, otn-label-hop and otn-label-step groupings defined in [I-D.ietf-ccamp-layer1-types]. 4. OTN Tunnel YANG Tree module: ietf-otn-tunnel augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:te-bandwidth/te:technology: +--:(otn) +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 Zheng, et al. Expires 8 September 2022 [Page 4] Internet-Draft OTN Tunnel YANG Model March 2022 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:te-bandwidth/te:technology: +--:(otn) +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:te-bandwidth/te:technology: +--:(otn) +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:te-bandwidth/te:technology: +--:(otn) +--ro otn +--ro odu-type? identityref +--ro (oduflex-type)? +--:(generic) Zheng, et al. Expires 8 September 2022 [Page 5] Internet-Draft OTN Tunnel YANG Model March 2022 | +--ro nominal-bit-rate uint64 +--:(cbr) | +--ro client-type identityref +--:(gfp-n-k) | +--ro gfp-n uint8 | +--ro gfp-k? gfp-k +--:(flexe-client) | +--ro flexe-client flexe-client-rate +--:(flexe-aware) | +--ro flexe-aware-n uint16 +--:(packet) +--ro opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path/te:te-bandwidth /te:technology: +--:(otn) +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:computed-paths-properties/te:computed-path-properties /te:path-properties/te:te-bandwidth/te:technology: +--:(otn) +--ro otn +--ro odu-type? identityref +--ro (oduflex-type)? +--:(generic) | +--ro nominal-bit-rate uint64 +--:(cbr) | +--ro client-type identityref +--:(gfp-n-k) | +--ro gfp-n uint8 | +--ro gfp-k? gfp-k +--:(flexe-client) Zheng, et al. Expires 8 September 2022 [Page 6] Internet-Draft OTN Tunnel YANG Model March 2022 | +--ro flexe-client flexe-client-rate +--:(flexe-aware) | +--ro flexe-aware-n uint16 +--:(packet) +--ro opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:te-bandwidth/te:technology: +--:(otn) +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:te-bandwidth/te:technology: +--:(otn) +--ro otn +--ro odu-type? identityref +--ro (oduflex-type)? +--:(generic) | +--ro nominal-bit-rate uint64 +--:(cbr) | +--ro client-type identityref +--:(gfp-n-k) | +--ro gfp-n uint8 | +--ro gfp-k? gfp-k +--:(flexe-client) | +--ro flexe-client flexe-client-rate +--:(flexe-aware) | +--ro flexe-aware-n uint16 +--:(packet) +--ro opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:te-bandwidth/te:technology: +--:(otn) Zheng, et al. Expires 8 September 2022 [Page 7] Internet-Draft OTN Tunnel YANG Model March 2022 +--rw otn +--rw odu-type? identityref +--rw (oduflex-type)? +--:(generic) | +--rw nominal-bit-rate uint64 +--:(cbr) | +--rw client-type identityref +--:(gfp-n-k) | +--rw gfp-n uint8 | +--rw gfp-k? gfp-k +--:(flexe-client) | +--rw flexe-client flexe-client-rate +--:(flexe-aware) | +--rw flexe-aware-n uint16 +--:(packet) +--rw opuflex-payload-rate uint64 augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:te-bandwidth/te:technology: +--:(otn) +--ro otn +--ro odu-type? identityref +--ro (oduflex-type)? +--:(generic) | +--ro nominal-bit-rate uint64 +--:(cbr) | +--ro client-type identityref +--:(gfp-n-k) | +--ro gfp-n uint8 | +--ro gfp-k? gfp-k +--:(flexe-client) | +--ro flexe-client flexe-client-rate +--:(flexe-aware) | +--ro flexe-aware-n uint16 +--:(packet) +--ro opuflex-payload-rate uint64 augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-in-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-out-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type Zheng, et al. Expires 8 September 2022 [Page 8] Internet-Draft OTN Tunnel YANG Model March 2022 +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-in-segment/te:label-restrictions /te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-out-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-in-segment/te:label-restrictions /te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-out-segment/te:label-restrictions /te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-in-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-out-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths Zheng, et al. Expires 8 September 2022 [Page 9] Internet-Draft OTN Tunnel YANG Model March 2022 /te:secondary-reverse-path/te:path-in-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-out-segment /te:label-restrictions/te:label-restriction: +--rw range-type? otn-label-range-type +--rw tsg? identityref +--rw odu-type-list* identityref +--rw priority? uint8 augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint /te:explicit-route-objects-always /te:route-object-exclude-always/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint /te:explicit-route-objects-always /te:route-object-include-exclude/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-in-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) Zheng, et al. Expires 8 September 2022 [Page 10] Internet-Draft OTN Tunnel YANG Model March 2022 | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-out-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:globals/te:named-path-constraints /te:named-path-constraint/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:optimizations/te:algorithm/te:metric /te:optimization-metric/te:explicit-route-exclude-objects /te:route-object-exclude-object/te:type/te:label /te:label-hop/te:te-label/te:technology: Zheng, et al. Expires 8 September 2022 [Page 11] Internet-Draft OTN Tunnel YANG Model March 2022 +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:optimizations/te:algorithm/te:metric /te:optimization-metric/te:explicit-route-include-objects /te:route-object-include-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:explicit-route-objects-always /te:route-object-exclude-always/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:explicit-route-objects-always /te:route-object-include-exclude/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-start/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-end/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) Zheng, et al. Expires 8 September 2022 [Page 12] Internet-Draft OTN Tunnel YANG Model March 2022 +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-step/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-out-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:path-route-objects/te:path-route-object/te:type /te:label/te:label-hop/te:te-label/te:technology: +--:(otn) +--ro otn-tpn? otn-tpn +--ro tsg? identityref Zheng, et al. Expires 8 September 2022 [Page 13] Internet-Draft OTN Tunnel YANG Model March 2022 +--ro ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path/te:optimizations /te:algorithm/te:metric/te:optimization-metric /te:explicit-route-exclude-objects /te:route-object-exclude-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path/te:optimizations /te:algorithm/te:metric/te:optimization-metric /te:explicit-route-include-objects /te:route-object-include-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:explicit-route-objects-always /te:route-object-exclude-always/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:explicit-route-objects-always /te:route-object-include-exclude/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-start/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn Zheng, et al. Expires 8 September 2022 [Page 14] Internet-Draft OTN Tunnel YANG Model March 2022 +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-end/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-in-segment/te:label-restrictions /te:label-restriction/te:label-step/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-out-segment/te:label-restrictions /te:label-restriction/te:label-start/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-out-segment/te:label-restrictions /te:label-restriction/te:label-end/te:te-label /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:path-out-segment/te:label-restrictions Zheng, et al. Expires 8 September 2022 [Page 15] Internet-Draft OTN Tunnel YANG Model March 2022 /te:label-restriction/te:label-step/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:primary-paths /te:primary-path/te:primary-reverse-path /te:computed-paths-properties/te:computed-path-properties /te:path-properties/te:path-route-objects /te:path-route-object/te:type/te:label/te:label-hop /te:te-label/te:technology: +--:(otn) +--ro otn-tpn? otn-tpn +--ro tsg? identityref +--ro ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:optimizations/te:algorithm /te:metric/te:optimization-metric /te:explicit-route-exclude-objects /te:route-object-exclude-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:optimizations/te:algorithm /te:metric/te:optimization-metric /te:explicit-route-include-objects /te:route-object-include-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:explicit-route-objects-always /te:route-object-exclude-always/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:explicit-route-objects-always /te:route-object-include-exclude/te:type/te:label Zheng, et al. Expires 8 September 2022 [Page 16] Internet-Draft OTN Tunnel YANG Model March 2022 /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-in-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-out-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-end Zheng, et al. Expires 8 September 2022 [Page 17] Internet-Draft OTN Tunnel YANG Model March 2022 /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-paths /te:secondary-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:path-route-objects/te:path-route-object/te:type /te:label/te:label-hop/te:te-label/te:technology: +--:(otn) +--ro otn-tpn? otn-tpn +--ro tsg? identityref +--ro ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:optimizations/te:algorithm /te:metric/te:optimization-metric /te:explicit-route-exclude-objects /te:route-object-exclude-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:optimizations/te:algorithm /te:metric/te:optimization-metric /te:explicit-route-include-objects /te:route-object-include-object/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path Zheng, et al. Expires 8 September 2022 [Page 18] Internet-Draft OTN Tunnel YANG Model March 2022 /te:explicit-route-objects-always /te:route-object-exclude-always/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path /te:explicit-route-objects-always /te:route-object-include-exclude/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--rw otn-tpn? otn-tpn +--rw tsg? identityref +--rw ts-list? string augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-in-segment /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-in-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-out-segment Zheng, et al. Expires 8 September 2022 [Page 19] Internet-Draft OTN Tunnel YANG Model March 2022 /te:label-restrictions/te:label-restriction /te:label-start/te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-end /te:te-label/te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:path-out-segment /te:label-restrictions/te:label-restriction/te:label-step /te:technology: +--:(otn) +--rw (range-type)? +--:(trib-port) | +--rw otn-tpn? otn-tpn +--:(trib-slot) +--rw otn-ts? otn-ts augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths /te:secondary-reverse-path/te:computed-paths-properties /te:computed-path-properties/te:path-properties /te:path-route-objects/te:path-route-object/te:type /te:label/te:label-hop/te:te-label/te:technology: +--:(otn) +--ro otn-tpn? otn-tpn +--ro tsg? identityref +--ro ts-list? string augment /te:te/te:lsps/te:lsp/te:lsp-record-route-information /te:lsp-record-route-information/te:type/te:label /te:label-hop/te:te-label/te:technology: +--:(otn) +--ro otn-tpn? otn-tpn +--ro tsg? identityref +--ro ts-list? string Zheng, et al. Expires 8 September 2022 [Page 20] Internet-Draft OTN Tunnel YANG Model March 2022 5. OTN Tunnel YANG Code file "ietf-otn-tunnel@2021-06-25.yang" module ietf-otn-tunnel { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-otn-tunnel"; prefix "otn-tunnel"; import ietf-te { prefix "te"; revision-date "2021-02-20"; reference "I-D.ietf-teas-yang-te-19: A YANG Data Model for Traffic Engineering Tunnels and Interfaces. "; } import ietf-layer1-types { prefix "l1-types"; reference "I-D.ietf-ccamp-layer1-types: A YANG Data Model for Layer 1 Types. "; } organization "IETF CCAMP Working Group"; contact "WG Web: WG List: Editor: Haomian Zheng Editor: Italo Busi Editor: Sergio Belotti Editor: Victor Lopez Editor: Yunbin Xu "; description "This module defines a model for OTN Tunnel Services. Zheng, et al. Expires 8 September 2022 [Page 21] Internet-Draft OTN Tunnel YANG Model March 2022 The model fully conforms to the Network Management Datastore Architecture (NMDA). Copyright (c) 2021 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; revision "2021-06-25" { description "Updated revision to align with the latest TE tunnel model."; reference "RFC XXXX: OTN Tunnel YANG Model"; // RFC Ed.: replace XXXX with actual RFC number, update date // information and remove this note } /* * Data nodes */ /* * Augment TE bandwidth */ augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the named path constraint."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the tunnel."; case otn { Zheng, et al. Expires 8 September 2022 [Page 22] Internet-Draft OTN Tunnel YANG Model March 2022 uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the primary path."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/te:path-properties/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of primary path's computed path properties."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the primary reverse path."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/te:path-properties/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the primary reverse path's computed path properties."; case otn { Zheng, et al. Expires 8 September 2022 [Page 23] Internet-Draft OTN Tunnel YANG Model March 2022 uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the secondary path."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/te:path-properties/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the secondary path's computed path properties."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/" + "te:secondary-reverse-path/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the secondary reverse path."; case otn { uses l1-types:otn-path-bandwidth; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/" + "te:secondary-reverse-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/te:path-properties/" + "te:te-bandwidth/te:technology" { description "Augment TE bandwidth of the secondary reverse path's computed path properties."; case otn { Zheng, et al. Expires 8 September 2022 [Page 24] Internet-Draft OTN Tunnel YANG Model March 2022 uses l1-types:otn-path-bandwidth; } } /* * Augment TE label range information */ augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-in-segment/" + "te:label-restrictions/te:label-restriction" { description "Augment TE label range information for the ingress segment of the named path constraint."; uses l1-types:otn-label-range-info; } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-out-segment/" + "te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the egress segment of the named path constraint."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the ingress segment of the primay path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the egress segment of the primay path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" Zheng, et al. Expires 8 September 2022 [Page 25] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the ingress segment of the primay reverse path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the egress segment of the primay reverse path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the ingress segment of the secondary path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the egress segment of the secondary path."; uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the ingress segment of the secondary reverse path."; Zheng, et al. Expires 8 September 2022 [Page 26] Internet-Draft OTN Tunnel YANG Model March 2022 uses l1-types:otn-label-range-info; } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction" { description "Augment TE label range information for the egress segment of the secondary reverse path."; uses l1-types:otn-label-range-info; } /* * Augment TE label. */ augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/" + "te:explicit-route-objects-always/" + "te:route-object-exclude-always/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects always excluded by the path computation with the named path constraint."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/" + "te:explicit-route-objects-always/" + "te:route-object-include-exclude/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects included or excluded by the path computation with the named path constraint."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-in-segment/" + "te:label-restrictions/" Zheng, et al. Expires 8 September 2022 [Page 27] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the ingress segment of the named path constraint."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-in-segment/" + "te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the ingress segment of the named path constraint."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-in-segment/" + "te:label-restrictions/te:label-restriction/" + "te:label-step/te:technology" { description "Augment TE label range step for the ingress segment of the named path constraint."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-out-segment/" + "te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the egress segment of the named path constraint."; case otn { uses l1-types:otn-label-start-end; } } Zheng, et al. Expires 8 September 2022 [Page 28] Internet-Draft OTN Tunnel YANG Model March 2022 augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-out-segment/" + "te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the egress segment of the named path constraint."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:globals/te:named-path-constraints/" + "te:named-path-constraint/te:path-out-segment/" + "te:label-restrictions/te:label-restriction/" + "te:label-step/te:technology" { description "Augment TE label range step for the egress segment of the named path constraint."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-exclude-objects/" + "te:route-object-exclude-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects excluded by the path computation of the primary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-include-objects/" + "te:route-object-include-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit Zheng, et al. Expires 8 September 2022 [Page 29] Internet-Draft OTN Tunnel YANG Model March 2022 route objects included by the path computation of the primary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:explicit-route-objects-always/" + "te:route-object-exclude-always/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects always excluded by the path computation of the primary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:explicit-route-objects-always/" + "te:route-object-include-exclude/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects included or excluded by the path computation of the primary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the ingress segment of the primay path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" Zheng, et al. Expires 8 September 2022 [Page 30] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the ingress segment of the primay path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the ingress segment of the primay path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the egress segment of the primay path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the egress segment of the primay path."; case otn { uses l1-types:otn-label-start-end; } } Zheng, et al. Expires 8 September 2022 [Page 31] Internet-Draft OTN Tunnel YANG Model March 2022 augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range end for the egress segment of the primay path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/te:path-properties/" + "te:path-route-objects/te:path-route-object/" + "te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the route object of the computed primary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-exclude-objects/" + "te:route-object-exclude-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects excluded by the path computation of the primary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-include-objects/" Zheng, et al. Expires 8 September 2022 [Page 32] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:route-object-include-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects included by the path computation of the primary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:explicit-route-objects-always/" + "te:route-object-exclude-always/" + "te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects always excluded by the path computation of the primary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:explicit-route-objects-always/" + "te:route-object-include-exclude/" + "te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects included or excluded by the path computation of the primary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" Zheng, et al. Expires 8 September 2022 [Page 33] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:te-label/te:technology" { description "Augment TE label range start for the ingress segment of the primay reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the ingress segment of the primay reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the ingress segment of the primay reverse path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the egress segment of the primay reverse path."; case otn { uses l1-types:otn-label-start-end; } Zheng, et al. Expires 8 September 2022 [Page 34] Internet-Draft OTN Tunnel YANG Model March 2022 } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the egress segment of the primay reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the egress segment of the primay reverse path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:primary-paths/te:primary-path/" + "te:primary-reverse-path/" + "te:computed-paths-properties/te:computed-path-properties/" + "te:path-properties/te:path-route-objects/" + "te:path-route-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the route object of the computed primary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-exclude-objects/" Zheng, et al. Expires 8 September 2022 [Page 35] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:route-object-exclude-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects excluded by the path computation of the secondary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-include-objects/" + "te:route-object-include-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects included by the path computation of the secondary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:explicit-route-objects-always/" + "te:route-object-exclude-always/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects always excluded by the path computation of the secondary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:explicit-route-objects-always/" + "te:route-object-include-exclude/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects included or excluded by the path computation of the secondary path."; case otn { Zheng, et al. Expires 8 September 2022 [Page 36] Internet-Draft OTN Tunnel YANG Model March 2022 uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the ingress segment of the secondary path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the ingress segment of the secondary path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the ingress segment of the secondary path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the egress segment Zheng, et al. Expires 8 September 2022 [Page 37] Internet-Draft OTN Tunnel YANG Model March 2022 of the secondary path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the egress segment of the secondary path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the egress segment of the secondary path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-paths/te:secondary-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/" + "te:path-properties/te:path-route-objects/" + "te:path-route-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the route object of the computed secondary path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" Zheng, et al. Expires 8 September 2022 [Page 38] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-exclude-objects/" + "te:route-object-exclude-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects excluded by the path computation of the secondary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:optimizations/te:algorithm/te:metric/" + "te:optimization-metric/te:explicit-route-include-objects/" + "te:route-object-include-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the optimization of the explicit route objects included by the path computation of the secondary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:explicit-route-objects-always/" + "te:route-object-exclude-always/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the explicit route objects always excluded by the path computation of the secondary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:explicit-route-objects-always/" + "te:route-object-include-exclude/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description Zheng, et al. Expires 8 September 2022 [Page 39] Internet-Draft OTN Tunnel YANG Model March 2022 "Augment TE label hop for the explicit route objects included or excluded by the path computation of the secondary reverse path."; case otn { uses l1-types:otn-label-hop; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the ingress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the ingress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-in-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the ingress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" Zheng, et al. Expires 8 September 2022 [Page 40] Internet-Draft OTN Tunnel YANG Model March 2022 + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-start/" + "te:te-label/te:technology" { description "Augment TE label range start for the egress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-end/" + "te:te-label/te:technology" { description "Augment TE label range end for the egress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-start-end; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:path-out-segment/te:label-restrictions/" + "te:label-restriction/te:label-step/te:technology" { description "Augment TE label range step for the egress segment of the secondary reverse path."; case otn { uses l1-types:otn-label-step; } } augment "/te:te/te:tunnels/te:tunnel/" + "te:secondary-reverse-paths/te:secondary-reverse-path/" + "te:computed-paths-properties/" + "te:computed-path-properties/" + "te:path-properties/te:path-route-objects/" + "te:path-route-object/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the route object of the computed secondary reverse path."; case otn { uses l1-types:otn-label-hop; Zheng, et al. Expires 8 September 2022 [Page 41] Internet-Draft OTN Tunnel YANG Model March 2022 } } augment "/te:te/te:lsps/" + "te:lsp/te:lsp-record-route-information/" + "te:lsp-record-route-information/te:type/te:label/" + "te:label-hop/te:te-label/te:technology" { description "Augment TE label hop for the record route of the LSP."; case otn { uses l1-types:otn-label-hop; } } } 6. 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 [RFC8446]. The NETCONF access control model [RFC8341] 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. Considerations in Section 10 of [I-D.ietf-teas-yang-te]are also applicable to their subtrees in the module defined in this document. 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. Considerations in Section 10 of [I-D.ietf-teas-yang-te]are also applicable to their subtrees in the module defined in this document. Zheng, et al. Expires 8 September 2022 [Page 42] Internet-Draft OTN Tunnel YANG Model March 2022 7. IANA Considerations It is proposed that IANA should assign new URIs from the "IETF XML Registry" [RFC3688] as follows: URI: urn:ietf:params:xml:ns:yang:ietf-otn-tunnel Registrant Contact: The IESG XML: N/A; the requested URI is an XML namespace. This document registers following YANG modules in the YANG Module Names registry [RFC7950]. name: ietf-otn-tunnel namespace: urn:ietf:params:xml:ns:yang:ietf-otn-tunnel prefix: otn-tunnel reference: RFC XXXX 8. Acknowledgements TBD. 9. Contributors Aihua Guo Futurewei Email: aihuaguo.ietf@gmail.com Anurag Sharma Google Email: ansha@google.com Rajan Rao Infinera Email: rrao@infinera.com Yunbo Li China Mobile Email: liyunbo@chinamobile.com Dieter Beller Nokia Email: dieter.beller@nokia.com Yanlei Zheng China Unicom Email: zhengyanlei@chinaunicom.cn Xian Zhang Huawei Technologies Email: zhang.xian@huawei.com Lei Wang China Mobile Email: wangleiyj@chinamobile.com Oscar Gonzalez de Dios Telefonica Email: oscar.gonzalezdedios@telefonica.com 10. References Zheng, et al. Expires 8 September 2022 [Page 43] Internet-Draft OTN Tunnel YANG Model March 2022 10.1. Normative References [I-D.ietf-ccamp-layer1-types] Zheng, H. and I. Busi, "A YANG Data Model for Layer 1 Types", Work in Progress, Internet-Draft, draft-ietf- ccamp-layer1-types-12, 7 March 2022, . [I-D.ietf-ccamp-otn-topo-yang] Zheng, H., Busi, I., Liu, X., Belotti, S., and O. G. D. Dios, "A YANG Data Model for Optical Transport Network Topology", Work in Progress, Internet-Draft, draft-ietf- ccamp-otn-topo-yang-13, 12 July 2021, . [I-D.ietf-teas-yang-te] Saad, T., Gandhi, R., Liu, X., Beeram, V. P., Bryskin, I., and O. G. D. Dios, "A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces", Work in Progress, Internet-Draft, draft-ietf-teas-yang-te- 29, 7 February 2022, . [ITU-Tg709] International Telecommunication Union, "Interfaces for the optical transport network", ITU-T G.709, March 2020. [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, January 2004, . [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, . [RFC7139] Zhang, F., Ed., Zhang, G., Belotti, S., Ceccarelli, D., and K. Pithewan, "GMPLS Signaling Extensions for Control of Evolving G.709 Optical Transport Networks", RFC 7139, DOI 10.17487/RFC7139, March 2014, . Zheng, et al. Expires 8 September 2022 [Page 44] Internet-Draft OTN Tunnel YANG Model March 2022 [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, . [RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, March 2018, . [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, . [RFC8446] Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018, . 10.2. Informative References [I-D.ietf-ccamp-transport-nbi-app-statement] Busi, I., King, D., Zheng, H., and Y. Xu, "Transport Northbound Interface Applicability Statement", Work in Progress, Internet-Draft, draft-ietf-ccamp-transport-nbi- app-statement-13, 29 September 2021, . [I-D.ietf-teas-actn-yang] Lee, Y., Zheng, H., Ceccarelli, D., Yoon, B. Y., and S. Belotti, "Applicability of YANG models for Abstraction and Control of Traffic Engineered Networks", Work in Progress, Internet-Draft, draft-ietf-teas-actn-yang-08, 8 September 2021, . [RFC7062] Zhang, F., Ed., Li, D., Li, H., Belotti, S., and D. Ceccarelli, "Framework for GMPLS and PCE Control of G.709 Optical Transport Networks", RFC 7062, DOI 10.17487/RFC7062, November 2013, . Zheng, et al. Expires 8 September 2022 [Page 45] Internet-Draft OTN Tunnel YANG Model March 2022 [RFC7138] Ceccarelli, D., Ed., Zhang, F., Belotti, S., Rao, R., and J. Drake, "Traffic Engineering Extensions to OSPF for GMPLS Control of Evolving G.709 Optical Transport Networks", RFC 7138, DOI 10.17487/RFC7138, March 2014, . [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, . Authors' Addresses Haomian Zheng Huawei Technologies H1, Huawei Xiliu Beipo Village, Songshan Lake Dongguan Guangdong, 523808 China Email: zhenghaomian@huawei.com Italo Busi Huawei Technologies HUAWEI TECHNOLOGIES ITALIA Srl Centro Direzionale Milano 2 20090 Milan Milan Italy Email: Italo.Busi@huawei.com Sergio Belotti Nokia Email: sergio.belotti@nokia.com Victor Lopez Nokia Email: victor.lopez@nokia.com Yunbin Xu CAICT Email: xuyunbin@caict.ac.cn Zheng, et al. Expires 8 September 2022 [Page 46]