Internet D. Yeung Internet-Draft Arrcus Intended status: Standards Track Y. Qu Expires: February 14, 2020 Futurewei J. Zhang Juniper Networks I. Chen The MITRE Corporation A. Lindem Cisco Systems August 13, 2019 YANG Data Model for OSPF SR (Segment Routing) Protocol draft-ietf-ospf-sr-yang-10 Abstract This document defines a YANG data model that can be used to configure and manage OSPF Segment Routing. The model is based on YANG 1.1 as defined in RFC 7950 and conforms to the Network Management Datastore Architecture (NDMA) as described in RFC 8342. 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 February 14, 2020. Copyright Notice Copyright (c) 2019 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 Yeung, et al. Expires February 14, 2020 [Page 1] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 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. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2 2. Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . . . 3 3. OSPF Segment Routing . . . . . . . . . . . . . . . . . . . . 3 4. OSPF Segment Routing YANG Module . . . . . . . . . . . . . . 7 5. Security Considerations . . . . . . . . . . . . . . . . . . . 22 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 22 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.1. Normative References . . . . . . . . . . . . . . . . . . 22 7.2. Informative References . . . . . . . . . . . . . . . . . 24 Appendix A. Contributors' Addreses . . . . . . . . . . . . . . . 25 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 25 1. Overview YANG [RFC6020] [RFC7950] is a data definition language used to define the contents of a conceptual data store that allows networked devices to be managed using NETCONF [RFC6241]. YANG is proving relevant beyond its initial confines, as bindings to other interfaces (e.g., ReST) and encodings other than XML (e.g., JSON) are being defined. Furthermore, YANG data models can be used as the basis for implementation of other interfaces, such as CLI and programmatic APIs. This document defines a YANG data model that can be used to configure and manage OSPF Segment Routing and it is an augmentation to the OSPF YANG data model. The YANG modules in this document conform to the Network Management Datastore Architecture (NMDA) [RFC8342]. 1.1. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. Yeung, et al. Expires February 14, 2020 [Page 2] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 2. Tree Diagrams This document uses the graphical representation of data models defined in [RFC8340]. 3. OSPF Segment Routing This document defines a model for OSPF Segment Routing feature [I-D.i etf-ospf-segment-routing-extensions][I-D.ietf-ospf-ospfv3-segment-rou ting-extensions]. It is an augmentation of the OSPF base model. The OSPF SR YANG module requires support for the base segment routing module [I-D.ietf-spring-sr-yang], which defines the global segment routing configuration independent of any specific routing protocol configuration, and support of OSPF base model[I-D.ietf-ospf-yang] which defines basic OSPF configuration and state. module: ietf-ospf-sr augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf: +--rw segment-routing | +--rw enabled? boolean | +--rw bindings | +--rw advertise | | +--rw policies* string | +--rw receive? boolean +--rw protocol-srgb {sr:protocol-srgb}? +--rw srgb* [lower-bound upper-bound] +--rw lower-bound uint32 +--rw upper-bound uint32 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:interfaces/ospf:interface: +--rw segment-routing +--rw adjacency-sid +--rw adj-sids* [value] | +--rw value-type? enumeration | +--rw value uint32 | +--rw protected? boolean +--rw advertise-adj-group-sid* [group-id] | +--rw group-id uint32 +--rw advertise-protection? enumeration augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:interfaces/ospf:interface/ospf:fast-reroute: +--rw ti-lfa {ti-lfa}? +--rw enable? boolean augment /rt:routing/rt:control-plane-protocols Yeung, et al. Expires February 14, 2020 [Page 3] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:interfaces/ospf:interface/ospf:database /ospf:link-scope-lsa-type/ospf:link-scope-lsas /ospf:link-scope-lsa/ospf:version/ospf:ospfv2/ospf:ospfv2 /ospf:body/ospf:opaque/ospf:extended-prefix-opaque /ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro prefix-sid-flags | +--ro bits* identityref +--ro mt-id? uint8 +--ro algorithm? uint8 +--ro sid? uint32 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:database/ospf:area-scope-lsa-type /ospf:area-scope-lsas/ospf:area-scope-lsa/ospf:version /ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque /ospf:extended-prefix-opaque/ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro prefix-sid-flags | +--ro bits* identityref +--ro mt-id? uint8 +--ro algorithm? uint8 +--ro sid? uint32 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:database /ospf:as-scope-lsa-type/ospf:as-scope-lsas/ospf:as-scope-lsa /ospf:version/ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque /ospf:extended-prefix-opaque/ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro prefix-sid-flags | +--ro bits* identityref +--ro mt-id? uint8 +--ro algorithm? uint8 +--ro sid? uint32 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:database/ospf:area-scope-lsa-type /ospf:area-scope-lsas/ospf:area-scope-lsa/ospf:version /ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque /ospf:extended-link-opaque/ospf:extended-link-tlv: +--ro adj-sid-sub-tlvs | +--ro adj-sid-sub-tlv* | +--ro adj-sid-flags | | +--ro bits* identityref Yeung, et al. Expires February 14, 2020 [Page 4] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 | +--ro mt-id? uint8 | +--ro weight? uint8 | +--ro sid? uint32 +--ro lan-adj-sid-sub-tlvs +--ro lan-adj-sid-sub-tlv* +--ro lan-adj-sid-flags | +--ro bits* identityref +--ro mt-id? uint8 +--ro weight? uint8 +--ro neighbor-router-id? yang:dotted-quad +--ro sid? uint32 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:interfaces/ospf:interface/ospf:database /ospf:link-scope-lsa-type/ospf:link-scope-lsas /ospf:link-scope-lsa/ospf:version/ospf:ospfv2/ospf:ospfv2 /ospf:body/ospf:opaque: +--ro extended-prefix-range-tlvs | +--ro extended-prefix-range-tlv* | +--ro prefix-length? uint8 | +--ro af? uint8 | +--ro range-size? uint16 | +--ro extended-prefix-range-flags | | +--ro bits* identityref | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro prefix-sid-flags | | | +--ro bits* identityref | | +--ro mt-id? uint8 | | +--ro algorithm? uint8 | | +--ro sid? uint32 | +--ro unknown-tlvs | +--ro unknown-tlv* | +--ro type? uint16 | +--ro length? uint16 | +--ro value? yang:hex-string +--ro sr-algorithm-tlv | +--ro sr-algorithm* uint8 +--ro sid-range-tlvs | +--ro sid-range-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv Yeung, et al. Expires February 14, 2020 [Page 5] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 | +--ro sid? uint32 +--ro srms-preference-tlv +--ro preference? uint8 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:areas /ospf:area/ospf:database/ospf:area-scope-lsa-type /ospf:area-scope-lsas/ospf:area-scope-lsa/ospf:version /ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque: +--ro extended-prefix-range-tlvs | +--ro extended-prefix-range-tlv* | +--ro prefix-length? uint8 | +--ro af? uint8 | +--ro range-size? uint16 | +--ro extended-prefix-range-flags | | +--ro bits* identityref | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro prefix-sid-flags | | | +--ro bits* identityref | | +--ro mt-id? uint8 | | +--ro algorithm? uint8 | | +--ro sid? uint32 | +--ro unknown-tlvs | +--ro unknown-tlv* | +--ro type? uint16 | +--ro length? uint16 | +--ro value? yang:hex-string +--ro sr-algorithm-tlv | +--ro sr-algorithm* uint8 +--ro sid-range-tlvs | +--ro sid-range-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro srms-preference-tlv +--ro preference? uint8 augment /rt:routing/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:database /ospf:as-scope-lsa-type/ospf:as-scope-lsas/ospf:as-scope-lsa /ospf:version/ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque: +--ro extended-prefix-range-tlvs | +--ro extended-prefix-range-tlv* Yeung, et al. Expires February 14, 2020 [Page 6] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 | +--ro prefix-length? uint8 | +--ro af? uint8 | +--ro range-size? uint16 | +--ro extended-prefix-range-flags | | +--ro bits* identityref | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro prefix-sid-flags | | | +--ro bits* identityref | | +--ro mt-id? uint8 | | +--ro algorithm? uint8 | | +--ro sid? uint32 | +--ro unknown-tlvs | +--ro unknown-tlv* | +--ro type? uint16 | +--ro length? uint16 | +--ro value? yang:hex-string +--ro sr-algorithm-tlv | +--ro sr-algorithm* uint8 +--ro sid-range-tlvs | +--ro sid-range-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro srms-preference-tlv +--ro preference? uint8 4. OSPF Segment Routing YANG Module file "ietf-ospf-sr@2019-08-13.yang" module ietf-ospf-sr { namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-sr"; prefix ospf-sr; import ietf-inet-types { prefix "inet"; } import ietf-yang-types { prefix "yang"; Yeung, et al. Expires February 14, 2020 [Page 7] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 } import ietf-routing { prefix "rt"; } import ietf-segment-routing-common { prefix "sr-cmn"; } import ietf-segment-routing { prefix "sr"; } import ietf-ospf { prefix "ospf"; } organization "IETF LSR - Link State Routing Working Group"; contact "WG Web: WG List: Editor: Derek Yeung Author: Derek Yeung Author: Yingzhen Qu Author: Acee Lindem Author: Jeffrey Zhang Author: Ing-Wher Chen Author: Greg Hankins "; description "This YANG module defines the generic configuration and operational state for OSPF Segment Routing, which is common across all of the vendor implementations. It is intended that the module will be extended by vendors to define vendor-specific OSPF Segment Routing configuration and operational parameters and policies. Copyright (c) 2017 IETF Trust and the persons identified as authors of the code. All rights reserved. Yeung, et al. Expires February 14, 2020 [Page 8] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 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."; reference "RFC XXXX"; revision 2019-08-13 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2019-08-07 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2019-07-07 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2019-03-05 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2018-06-25 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2018-03-03 { Yeung, et al. Expires February 14, 2020 [Page 9] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 description "* Remove OSPF instance."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2017-12-28 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2017-07-02 { description "* Implement NMDA model. * Add local-block-tlvs and srms-preference-tlv. * Remove sid-binding-sub-tlvs."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2017-03-12 { description "* Add p-flag in adj-sid sub-tlv."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2016-10-31 { description "* Update authors information. * Add import of ietf-segment-routing-common module."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2016-07-07 { description "* Change routing-protocol to control-plane-protocol."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2016-03-20 { description "* Remove routing-instance."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; Yeung, et al. Expires February 14, 2020 [Page 10] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 } revision 2015-10-19 { description "* Add per-protocol SRGB support. * Editorial changes."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2015-09-02 { description "* Author list update. * Editorial changes."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2015-07-06 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } feature ti-lfa { description "Topology-Independent Loop-Free Alternate (TI-LFA) computation using segment routing."; } identity prefix-sid-bit { description "Base identity for prefix sid sub-tlv bits."; } identity np-bit { base prefix-sid-bit; description "No-PHP flag."; } identity m-bit { base prefix-sid-bit; description "Mapping server flag."; } Yeung, et al. Expires February 14, 2020 [Page 11] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 identity e-bit { base prefix-sid-bit; description "Explicit-NULL flag."; } identity v-bit { base prefix-sid-bit; description "Value/Index flag."; } identity l-bit { base prefix-sid-bit; description "Local flag."; } identity extended-prefix-range-bit { description "Base identity for extended prefix range TLV bits."; } identity ia-bit { base extended-prefix-range-bit; description "Inter-Area flag. If set, advertisement is of inter-area type."; } identity adj-sid-bit { description "Base identity for adj sid sub-tlv bits."; } identity b-bit { base adj-sid-bit; description "Backup flag."; } identity vi-bit { base adj-sid-bit; description "Value/Index flag."; } identity lo-bit { base adj-sid-bit; Yeung, et al. Expires February 14, 2020 [Page 12] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 description "Local/Global flag."; } identity g-bit { base adj-sid-bit; description "Group flag."; } identity p-bit { base adj-sid-bit; description "Persistent flag."; } typedef uint24 { type uint32 { range "0 .. 16777215"; } description "24-bit unsigned integer."; } /* Groupings */ grouping sid-sub-tlv { description "SID/Label sub-TLV grouping."; container sid-sub-tlv { description "Used to advertise the SID/Label associated with a prefix or adjacency."; leaf sid { type uint32; description "Segment Identifier (SID) - A 20 bit label or 32 bit SID."; } } } grouping prefix-sid-sub-tlvs { description "Prefix Segment ID (SID) sub-TLVs."; container perfix-sid-sub-tlvs{ description "Prefix SID sub-TLV."; list prefix-sid-sub-tlv { description "Prefix SID sub-TLV."; container prefix-sid-flags { leaf-list bits { Yeung, et al. Expires February 14, 2020 [Page 13] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 type identityref { base prefix-sid-bit; } description "Prefix SID Sub-TLV flag bits list."; } description "Segment Identifier (SID) Flags."; } leaf mt-id { type uint8; description "Multi-topology ID."; } leaf algorithm { type uint8; description "The algorithm associated with the prefix-SID."; } leaf sid { type uint32; description "An index or label."; } } } } grouping extended-prefix-range-tlvs { description "Extended prefix range TLV grouping."; container extended-prefix-range-tlvs { description "The list of range of prefixes."; list extended-prefix-range-tlv { //type=2? description "The range of prefixes."; leaf prefix-length { type uint8; description "Length of prefix in bits."; } leaf af { type uint8; description "Address family for the prefix."; } leaf range-size { type uint16; description "The number of prefixes covered by the advertisement."; } container extended-prefix-range-flags { leaf-list bits { type identityref { Yeung, et al. Expires February 14, 2020 [Page 14] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 base extended-prefix-range-bit; } description "Extended prefix range TLV flags list."; } description "Extended Prefix Range TLV flags."; } leaf prefix { type inet:ip-prefix; description "Address prefix."; } uses prefix-sid-sub-tlvs; uses ospf:unknown-tlvs; } } } grouping sr-algorithm-tlv { description "SR algorithm TLV grouping."; container sr-algorithm-tlv { description "All SR algorithm TLVs."; leaf-list sr-algorithm { type uint8; description "The Segment Routing (SR) algorithms that the router is currently using."; } } } grouping sid-range-tlvs { description "SID Range TLV grouping."; container sid-range-tlvs { description "List of SID range TLVs."; list sid-range-tlv { description "SID range TLV."; leaf range-size { type uint24; description "The SID range."; } uses sid-sub-tlv; } } } grouping local-block-tlvs { description "The SR local block TLV contains the range of labels reserved for local SIDs."; container local-block-tlvs { Yeung, et al. Expires February 14, 2020 [Page 15] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 description "List of SRLB TLVs."; list local-block-tlv { description "SRLB TLV."; leaf range-size { type uint24; description "The SID range."; } uses sid-sub-tlv; } } } grouping srms-preference-tlv { description "The SRMS preference TLV is used to advertise a preference associated with the node that acts as an SR Mapping Server."; container srms-preference-tlv { description "SRMS Preference TLV."; leaf preference { type uint8 { range "0 .. 255"; } description "SRMS preference TLV, vlaue from 0 to 255."; } } } /* Configuration */ augment "/rt:routing/rt:control-plane-protocols" + "/rt:control-plane-protocol/ospf:ospf" { when "../rt:type = 'ospf:ospfv2' or " + "../rt:type = 'ospf:ospfv3'" { description "This augments the OSPF routing protocol when used."; } description "This augments the OSPF protocol configuration with segment routing."; uses sr:sr-controlplane; container protocol-srgb { if-feature sr:protocol-srgb; uses sr-cmn:srgb; description "Per-protocol SRGB."; } } augment "/rt:routing/rt:control-plane-protocols/" Yeung, et al. Expires February 14, 2020 [Page 16] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 + "rt:control-plane-protocol/ospf:ospf/" + "ospf:areas/ospf:area/ospf:interfaces/ospf:interface" { when "../../../../../rt:type = 'ospf:ospfv2' or " + "../../../../../rt:type = 'ospf:ospfv3'" { description "This augments the OSPF interface configuration when used."; } description "This augments the OSPF protocol interface configuration with segment routing."; uses sr:igp-interface; } augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/ospf:ospf/" + "ospf:areas/ospf:area/ospf:interfaces/ospf:interface/" + "ospf:fast-reroute" { when "../../../../../../rt:type = 'ospf:ospfv2' or " + "../../../../../../rt:type = 'ospf:ospfv3'" { description "This augments the OSPF routing protocol when used."; } description "This augments the OSPF protocol IP-FRR with TI-LFA."; container ti-lfa { if-feature ti-lfa; leaf enable { type boolean; description "Enables TI-LFA computation."; } description "Topology Independent Loop Free Alternate (TI-LFA) support."; } } /* Database */ augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/ospf:area/" + "ospf:interfaces/ospf:interface/ospf:database/" + "ospf:link-scope-lsa-type/ospf:link-scope-lsas/" + "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque/" Yeung, et al. Expires February 14, 2020 [Page 17] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" { when "../../../../../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 extended prefix TLV in type 9 opaque LSA."; uses prefix-sid-sub-tlvs; } augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/" + "ospf:area/ospf:database/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque/" + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" { when "../../../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 extended prefix TLV in type 10 opaque LSA."; uses prefix-sid-sub-tlvs; } augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:database/" + "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque/" + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" { when "../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 extended prefix TLV in type 11 opaque LSA."; uses prefix-sid-sub-tlvs; } Yeung, et al. Expires February 14, 2020 [Page 18] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/" + "ospf:area/ospf:database/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque/" + "ospf:extended-link-opaque/ospf:extended-link-tlv" { when "../../../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 extended link TLV in type 10 opaque LSA."; container adj-sid-sub-tlvs { description "Adjacency SID optional sub-TLVs."; list adj-sid-sub-tlv { description "List of Adjacency SID sub-TLVs."; container adj-sid-flags { leaf-list bits { type identityref { base adj-sid-bit; } description "Adj sid sub-tlv flags list."; } description "Adj-sid sub-tlv flags."; } leaf mt-id { type uint8; description "Multi-topology ID."; } leaf weight { type uint8; description "Weight used for load-balancing."; } leaf sid { type uint32; description "Segment Identifier (SID) index/label."; } } } container lan-adj-sid-sub-tlvs { description "LAN Adjacency SID optional sub-TLVs."; list lan-adj-sid-sub-tlv { Yeung, et al. Expires February 14, 2020 [Page 19] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 description "List of LAN adjacency SID sub-TLVs."; container lan-adj-sid-flags { leaf-list bits { type identityref { base adj-sid-bit; } description "LAN adj sid sub-tlv flags list."; } description "LAN adj-sid sub-tlv flags."; } leaf mt-id { type uint8; description "Multi-topology ID."; } leaf weight { type uint8; description "Weight used for load-balancing."; } leaf neighbor-router-id { type yang:dotted-quad; description "Neighbor router ID."; } leaf sid { type uint32; description "Segment Identifier (SID) index/label."; } } } } augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/ospf:area/" + "ospf:interfaces/ospf:interface/ospf:database/" + "ospf:link-scope-lsa-type/ospf:link-scope-lsas/" + "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque" { when "../../../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 type 9 opaque LSA."; uses extended-prefix-range-tlvs; uses sr-algorithm-tlv; Yeung, et al. Expires February 14, 2020 [Page 20] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 uses sid-range-tlvs; uses local-block-tlvs; uses srms-preference-tlv; } augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/" + "ospf:area/ospf:database/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque" { when "../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 type 10 opaque LSA."; uses extended-prefix-range-tlvs; uses sr-algorithm-tlv; uses sid-range-tlvs; uses local-block-tlvs; uses srms-preference-tlv; } augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:database/" + "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv2/ospf:body/ospf:opaque" { when "../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description "This augmentation is only valid for OSPFv2."; } description "SR specific TLVs for OSPFv2 type 11 opaque LSA."; uses extended-prefix-range-tlvs; uses sr-algorithm-tlv; uses sid-range-tlvs; uses local-block-tlvs; uses srms-preference-tlv; } Yeung, et al. Expires February 14, 2020 [Page 21] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 } 5. Security Considerations The data model defined does not create any security implications. This draft does not change any underlying security issues inherent in [I-D.ietf-netmod-routing-cfg]. 6. Acknowledgements The authors wish to thank Yi Yang, Alexander Clemm, Gaurav Gupta, Ladislav Lhotka, Stephane Litkowski, Greg Hankins, Manish Gupta and Alan Davey for their thorough reviews and helpful comments. This document was produced using Marshall Rose's xml2rfc tool. Author affiliation with The MITRE Corporation is provided for identification purposes only, and is not intended to convey or imply MITRE's concurrence with, or support for, the positions, opinions or viewpoints expressed. MITRE has approved this document for Public Release, Distribution Unlimited, with Public Release Case Number 18-3281. 7. References 7.1. Normative References [I-D.ietf-ospf-ospfv3-segment-routing-extensions] Psenak, P. and S. Previdi, "OSPFv3 Extensions for Segment Routing", draft-ietf-ospf-ospfv3-segment-routing- extensions-23 (work in progress), January 2019. [I-D.ietf-ospf-segment-routing-extensions] Psenak, P., Previdi, S., Filsfils, C., Gredler, H., Shakir, R., Henderickx, W., and J. Tantsura, "OSPF Extensions for Segment Routing", draft-ietf-ospf-segment- routing-extensions-27 (work in progress), December 2018. [I-D.ietf-ospf-yang] Yeung, D., Qu, Y., Zhang, Z., Chen, I., and A. Lindem, "YANG Data Model for OSPF Protocol", draft-ietf-ospf- yang-26 (work in progress), August 2019. Yeung, et al. Expires February 14, 2020 [Page 22] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 [I-D.ietf-spring-sr-yang] Litkowski, S., Qu, Y., Lindem, A., Sarkar, P., and J. Tantsura, "YANG Data Model for Segment Routing", draft- ietf-spring-sr-yang-13 (work in progress), July 2019. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC2328] Moy, J., "OSPF Version 2", STD 54, RFC 2328, DOI 10.17487/RFC2328, April 1998, . [RFC4750] Joyal, D., Ed., Galecki, P., Ed., Giacalone, S., Ed., Coltun, R., and F. Baker, "OSPF Version 2 Management Information Base", RFC 4750, DOI 10.17487/RFC4750, December 2006, . [RFC5340] Coltun, R., Ferguson, D., Moy, J., and A. Lindem, "OSPF for IPv6", RFC 5340, DOI 10.17487/RFC5340, July 2008, . [RFC5643] Joyal, D., Ed. and V. Manral, Ed., "Management Information Base for OSPFv3", RFC 5643, DOI 10.17487/RFC5643, August 2009, . [RFC5838] Lindem, A., Ed., Mirtorabi, S., Roy, A., Barnes, M., and R. Aggarwal, "Support of Address Families in OSPFv3", RFC 5838, DOI 10.17487/RFC5838, April 2010, . [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, October 2010, . [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, . [RFC7223] Bjorklund, M., "A YANG Data Model for Interface Management", RFC 7223, DOI 10.17487/RFC7223, May 2014, . Yeung, et al. Expires February 14, 2020 [Page 23] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, . 7.2. Informative References [RFC8022] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", RFC 8022, DOI 10.17487/RFC8022, November 2016, . [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, 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, . Yeung, et al. Expires February 14, 2020 [Page 24] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 Appendix A. Contributors' Addreses Dean Bogdanovic Volta Networks, Inc. EMail: dean@voltanet.io Kiran Koushik Agrahara Sreenivasa Cisco Systems 12515 Research Blvd, Bldg 4 Austin, TX 78681 USA EMail: kkoushik@cisco.com Authors' Addresses Derek Yeung Arrcus EMail: derek@arrcus.com Yingzhen Qu Futurewei 2330 Central Expressway Santa Clara, CA 95050 USA EMail: yingzhen.qu@futurewei.com Jeffrey Zhang Juniper Networks 10 Technology Park Drive Westford, MA 01886 USA EMail: zzhang@juniper.net Ing-Wher Chen The MITRE Corporation EMail: ingwherchen@mitre.org Yeung, et al. Expires February 14, 2020 [Page 25] Internet-Draft OSPF SR (Segment Routing) YANG Data Model August 2019 Acee Lindem Cisco Systems 301 Midenhall Way Cary, NC 27513 EMail: acee@cisco.com Yeung, et al. Expires February 14, 2020 [Page 26]