Internet D. Yeung Internet-Draft Arrcus Intended status: Informational Y. Qu Expires: January 2, 2019 Huawei J. Zhang Juniper Networks I. Chen Jabil Circuit A. Lindem Cisco Systems July 1, 2018 Yang Data Model for OSPF SR (Segment Routing) Protocol draft-ietf-ospf-sr-yang-05 Abstract This document defines a YANG data model that can be used to configure and manage OSPF Segment Routing. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on January 2, 2019. Copyright Notice Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect Yeung, et al. Expires January 2, 2019 [Page 1] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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. OSPF Segment Routing . . . . . . . . . . . . . . . . . . . . 2 3. OSPF Segment Routing Yang Module . . . . . . . . . . . . . . 7 4. Security Considerations . . . . . . . . . . . . . . . . . . . 20 5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 20 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.1. Normative References . . . . . . . . . . . . . . . . . . 20 6.2. Informative References . . . . . . . . . . . . . . . . . 22 Appendix A. Contributors' Addreses . . . . . . . . . . . . . . . 23 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 23 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. 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]. 2. 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 Yeung, et al. Expires January 2, 2019 [Page 2] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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:interface: +--rw segment-routing +--rw adjacency-sid +--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 /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-tlvs /ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro flags? bits +--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 Yeung, et al. Expires January 2, 2019 [Page 3] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 /ospf:ospfv2/ospf:ospfv2/ospf:body/ospf:opaque /ospf:extended-prefix-tlvs/ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro flags? bits +--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-tlvs /ospf:extended-prefix-tlv: +--ro perfix-sid-sub-tlvs +--ro prefix-sid-sub-tlv* +--ro flags? bits +--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-tlvs/ospf:extended-link-tlv: +--ro adj-sid-sub-tlvs | +--ro adj-sid-sub-tlv* | +--ro flags? bits | +--ro mt-id? uint8 | +--ro weight? uint8 | +--ro sid? uint32 +--ro lan-adj-sid-sub-tlvs +--ro lan-adj-sid-sub-tlv* +--ro flags? bits +--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 range-size? uint16 Yeung, et al. Expires January 2, 2019 [Page 4] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 | +--ro flags? bits | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro flags? bits | | +--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? ospf:uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? ospf: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: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 range-size? uint16 | +--ro flags? bits | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro flags? bits | | +--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 Yeung, et al. Expires January 2, 2019 [Page 5] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 +--ro sr-algorithm-tlv | +--ro sr-algorithm* uint8 +--ro sid-range-tlvs | +--ro sid-range-tlv* | +--ro range-size? ospf:uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? ospf: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* | +--ro range-size? uint16 | +--ro flags? bits | +--ro prefix? inet:ip-prefix | +--ro perfix-sid-sub-tlvs | | +--ro prefix-sid-sub-tlv* | | +--ro flags? bits | | +--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? ospf:uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro local-block-tlvs | +--ro local-block-tlv* | +--ro range-size? ospf:uint24 | +--ro sid-sub-tlv | +--ro sid? uint32 +--ro srms-preference-tlv Yeung, et al. Expires January 2, 2019 [Page 6] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 +--ro preference? uint8 3. OSPF Segment Routing Yang Module file "ietf-ospf-sr@2018-06-25.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"; } 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 OSPF - OSPF Working Group"; contact "WG Web: WG List: Editor: Derek Yeung Author: Derek Yeung Author: Yingzhen Qu Author: Acee Lindem Author: Jeffrey Zhang Yeung, et al. Expires January 2, 2019 [Page 7] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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. 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 2018-06-25 { description ""; reference "RFC XXXX: A YANG Data Model for OSPF Segment Routing."; } revision 2018-03-03 { 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."; } Yeung, et al. Expires January 2, 2019 [Page 8] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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."; } 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. Yeung, et al. Expires January 2, 2019 [Page 9] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 * 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."; } /* 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."; leaf flags { type bits { bit NP { position 1; description "No-PHP flag."; } bit M { Yeung, et al. Expires January 2, 2019 [Page 10] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 position 2; description "Mapping server flag."; } bit E { position 3; description "Explicit-NULL flag."; } bit V { position 4; description "Value/Index flag."; } bit L { position 5; description "Local flag."; } } 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 range-size { type uint16; Yeung, et al. Expires January 2, 2019 [Page 11] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 description "The number of prefixes covered by the advertisement."; } leaf flags { type bits { bit IA { position 0; description "Inter-Area flag."; } } description "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 ospf:uint24; description "The SID range."; } uses sid-sub-tlv; } Yeung, et al. Expires January 2, 2019 [Page 12] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 } } grouping local-block-tlvs { description "The SR local block TLV contains the range of labels reserved for local SIDs."; container local-block-tlvs { description "List of SRLB TLVs."; list local-block-tlv { description "SRLB TLV."; leaf range-size { type ospf: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:controlplane-cfg; container protocol-srgb { if-feature sr:protocol-srgb; Yeung, et al. Expires January 2, 2019 [Page 13] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 uses sr-cmn:srgb-cfg; description "Per-protocol SRGB."; } } augment "/rt:routing/rt:control-plane-protocols/" + "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-cfg; } 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 */ Yeung, et al. Expires January 2, 2019 [Page 14] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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/" + "ospf:extended-prefix-tlvs/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-tlvs/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-tlvs/ospf:extended-prefix-tlv" { when "../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" { description Yeung, et al. Expires January 2, 2019 [Page 15] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 "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; } 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-tlvs/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."; leaf flags { type bits { bit B { position 0; description "Backup flag."; } bit V { position 1; description "Value/Index flag."; } bit L { position 2; description "Local/Global flag."; } bit G { position 3; Yeung, et al. Expires January 2, 2019 [Page 16] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 description "Group flag."; } bit P { position 4; description "Persistent flag."; } } description "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 { description "List of LAN adjacency SID sub-TLVs."; leaf flags { type bits { bit B { position 0; description "Backup flag."; } bit V { position 1; description "Value/Index flag."; } bit L { position 2; description "Local/Global flag."; } bit G { Yeung, et al. Expires January 2, 2019 [Page 17] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 position 3; description "Group flag."; } bit P { position 4; description "Persistent flag."; } } description "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."; Yeung, et al. Expires January 2, 2019 [Page 18] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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: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; Yeung, et al. Expires January 2, 2019 [Page 19] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 uses srms-preference-tlv; } } 4. 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]. 5. 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. 6. References 6.1. Normative References [I-D.ietf-ospf-ospfv3-segment-routing-extensions] Psenak, P., Filsfils, C., Previdi, S., Gredler, H., Shakir, R., Henderickx, W., and J. Tantsura, "OSPFv3 Extensions for Segment Routing", draft-ietf-ospf-ospfv3- segment-routing-extensions-13 (work in progress), May 2018. [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-25 (work in progress), April 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-11 (work in progress), April 2018. [I-D.ietf-spring-sr-yang] Litkowski, S., Qu, Y., Sarkar, P., and J. Tantsura, "YANG Data Model for Segment Routing", draft-ietf-spring-sr- yang-09 (work in progress), June 2018. Yeung, et al. Expires January 2, 2019 [Page 20] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 [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, . [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, . Yeung, et al. Expires January 2, 2019 [Page 21] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 6.2. Informative References [RFC8022] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", RFC 8022, DOI 10.17487/RFC8022, November 2016, . Yeung, et al. Expires January 2, 2019 [Page 22] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 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 Huawei 2330 Central Expressway Santa Clara, CA 95050 USA EMail: yingzhen.qu@huawei.com Jeffrey Zhang Juniper Networks 10 Technology Park Drive Westford, MA 01886 USA EMail: zzhang@juniper.net Ing-Wher Chen Jabil Circuit EMail: Ing-Wher_chen@jabil.com Yeung, et al. Expires January 2, 2019 [Page 23] Internet-Draft OSPF SR (Segment Routing) Yang Data Model July 2018 Acee Lindem Cisco Systems 301 Midenhall Way Cary, NC 27513 EMail: acee@cisco.com Yeung, et al. Expires January 2, 2019 [Page 24]