Internet D. Yeung Internet-Draft Arrcus Intended status: Informational Y. Qu Expires: May 4, 2017 Cisco Systems J. Zhang Juniper Networks I. Chen Kuatro Technologies A. Lindem Cisco Systems October 31, 2016 Yang Data Model for OSPF SR (Segment Routing) Protocol draft-ietf-ospf-sr-yang-00 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 http://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 May 4, 2017. Copyright Notice Copyright (c) 2016 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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect Yeung, et al. Expires May 4, 2017 [Page 1] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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 . . . . . . . . . . . . . . 9 4. Security Considerations . . . . . . . . . . . . . . . . . . . 24 5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 24 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 24 6.1. Normative References . . . . . . . . . . . . . . . . . . 24 6.2. Informative References . . . . . . . . . . . . . . . . . 26 Appendix A. Contributors' Addreses . . . . . . . . . . . . . . . 28 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 28 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. 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 Yeung, et al. Expires May 4, 2017 [Page 2] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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/ospf:instance: +--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:instance/ospf:areas/ospf:area/ospf:interfaces /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:instance/ospf:areas/ospf:area/ospf:interfaces /ospf:interface/ospf:fast-reroute: +--rw ti-lfa {ti-lfa}? +--rw enable? boolean augment /rt:routing-state/rt:control-plane-protocols/rt:control-plane-protocol /ospf:ospf/ospf:instance: +--ro segment-routing | +--ro enabled? boolean | +--ro bindings | +--ro advertise | | +--ro policies* string | +--ro receive? boolean +--ro protocol-srgb {sr:protocol-srgb}? +--ro srgb* [lower-bound upper-bound] +--ro lower-bound uint32 +--ro upper-bound uint32 augment /rt:routing-state/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:instance /ospf:areas/ospf:area/ospf:interfaces/ospf:interface: +--ro segment-routing +--ro adjacency-sid +--ro advertise-adj-group-sid* [group-id] | +--ro group-id uint32 Yeung, et al. Expires May 4, 2017 [Page 3] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 +--ro advertise-protection? enumeration augment /rt:routing-state/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:instance/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 +--ro sid-binding-sub-tlvs +--ro sid-binding-sub-tlv* +--ro flags? bits +--ro mt-id? uint8 +--ro weight? uint8 +--ro sid-sub-tlv | +--ro sid? uint32 +--ro ero-metric-sub-tlv | +--ro metric? uint32 +--ro ipv4-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-ero-sub-tlv | +--ro flags? bits | +--ro router-id? yang:dotted-quad | +--ro interface-id? uint32 +--ro ipv4-backup-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-backup-ero-sub-tlv +--ro flags? bits +--ro router-id? yang:dotted-quad +--ro interface-id? uint32 augment /rt:routing-state/rt:control-plane-protocols/rt:control-plane-protocol /ospf:ospf/ospf:instance/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: +--ro perfix-sid-sub-tlvs | +--ro prefix-sid-sub-tlv* | +--ro flags? bits | +--ro mt-id? uint8 | +--ro algorithm? uint8 | +--ro sid? uint32 +--ro sid-binding-sub-tlvs Yeung, et al. Expires May 4, 2017 [Page 4] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 +--ro sid-binding-sub-tlv* +--ro flags? bits +--ro mt-id? uint8 +--ro weight? uint8 +--ro sid-sub-tlv | +--ro sid? uint32 +--ro ero-metric-sub-tlv | +--ro metric? uint32 +--ro ipv4-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-ero-sub-tlv | +--ro flags? bits | +--ro router-id? yang:dotted-quad | +--ro interface-id? uint32 +--ro ipv4-backup-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-backup-ero-sub-tlv +--ro flags? bits +--ro router-id? yang:dotted-quad +--ro interface-id? uint32 augment /rt:routing-state/rt:control-plane-protocols/rt:control-plane-protocol /ospf:ospf/ospf:instance/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 +--ro sid-binding-sub-tlvs +--ro sid-binding-sub-tlv* +--ro flags? bits +--ro mt-id? uint8 +--ro weight? uint8 +--ro sid-sub-tlv | +--ro sid? uint32 +--ro ero-metric-sub-tlv | +--ro metric? uint32 +--ro ipv4-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-ero-sub-tlv | +--ro flags? bits | +--ro router-id? yang:dotted-quad Yeung, et al. Expires May 4, 2017 [Page 5] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 | +--ro interface-id? uint32 +--ro ipv4-backup-ero-sub-tlv | +--ro flags? bits | +--ro ipv4-address? inet:ipv4-address +--ro unnumbered-backup-ero-sub-tlv +--ro flags? bits +--ro router-id? yang:dotted-quad +--ro interface-id? uint32 augment /rt:routing-state/rt:control-plane-protocols/rt:control-plane-protocol /ospf:ospf/ospf:instance/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-state/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:instance/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 | +--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 sid-binding-sub-tlvs | | +--ro sid-binding-sub-tlv* | | +--ro flags? bits | | +--ro mt-id? uint8 | | +--ro weight? uint8 | | +--ro sid-sub-tlv Yeung, et al. Expires May 4, 2017 [Page 6] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 | | | +--ro sid? uint32 | | +--ro ero-metric-sub-tlv | | | +--ro metric? uint32 | | +--ro ipv4-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-ero-sub-tlv | | | +--ro flags? bits | | | +--ro router-id? yang:dotted-quad | | | +--ro interface-id? uint32 | | +--ro ipv4-backup-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-backup-ero-sub-tlv | | +--ro flags? bits | | +--ro router-id? yang:dotted-quad | | +--ro interface-id? 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 augment /rt:routing-state/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:instance/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 sid-binding-sub-tlvs | | +--ro sid-binding-sub-tlv* | | +--ro flags? bits Yeung, et al. Expires May 4, 2017 [Page 7] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 | | +--ro mt-id? uint8 | | +--ro weight? uint8 | | +--ro sid-sub-tlv | | | +--ro sid? uint32 | | +--ro ero-metric-sub-tlv | | | +--ro metric? uint32 | | +--ro ipv4-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-ero-sub-tlv | | | +--ro flags? bits | | | +--ro router-id? yang:dotted-quad | | | +--ro interface-id? uint32 | | +--ro ipv4-backup-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-backup-ero-sub-tlv | | +--ro flags? bits | | +--ro router-id? yang:dotted-quad | | +--ro interface-id? 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 augment /rt:routing-state/rt:control-plane-protocols /rt:control-plane-protocol/ospf:ospf/ospf:instance/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 sid-binding-sub-tlvs Yeung, et al. Expires May 4, 2017 [Page 8] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 | | +--ro sid-binding-sub-tlv* | | +--ro flags? bits | | +--ro mt-id? uint8 | | +--ro weight? uint8 | | +--ro sid-sub-tlv | | | +--ro sid? uint32 | | +--ro ero-metric-sub-tlv | | | +--ro metric? uint32 | | +--ro ipv4-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-ero-sub-tlv | | | +--ro flags? bits | | | +--ro router-id? yang:dotted-quad | | | +--ro interface-id? uint32 | | +--ro ipv4-backup-ero-sub-tlv | | | +--ro flags? bits | | | +--ro ipv4-address? inet:ipv4-address | | +--ro unnumbered-backup-ero-sub-tlv | | +--ro flags? bits | | +--ro router-id? yang:dotted-quad | | +--ro interface-id? 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 3. OSPF Segment Routing Yang Module file "ietf-ospf-sr@2016-10-31.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 { Yeung, et al. Expires May 4, 2017 [Page 9] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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 "Cisco Systems 170 West Tasman Drive San Jose, CA 95134-1706 USA"; contact "WG Web: WG List: WG Chair: Acee Lindem WG Chair: Abhay Roy Editor: Derek Yeung Author: Derek Yeung Author: Yingzhen Qu Author: Acee Lindem Author: Jeffrey Zhang Author: Ing-Wher Chen Author: Greg Hankins "; description Yeung, et al. Expires May 4, 2017 [Page 10] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 "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. Terms and Acronyms OSPF (ospf): Open Shortest Path First IP (ip): Internet Protocol IPv4 (ipv4):Internet Protocol Version 4 IPv6 (ipv6): Internet Protocol Version 6 "; 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."; } Yeung, et al. Expires May 4, 2017 [Page 11] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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."; } /* Configuration */ augment "/rt:routing/rt:control-plane-protocols" + "/rt:control-plane-protocol/ospf:ospf/ospf:instance" { 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; uses sr-cmn:srgb-cfg; description "Per-protocol SRGB."; } } augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/ospf:ospf/ospf:instance/" + "ospf:areas/ospf:area/ospf:interfaces/ospf:interface" { when "../../../../../../rt:type = 'ospf:ospfv2' or " + "../../../../../../rt:type = 'ospf:ospfv3'" { description Yeung, et al. Expires May 4, 2017 [Page 12] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 "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:instance/" + "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."; } } /* Operational states */ augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance" { 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 operational state with segment routing."; Yeung, et al. Expires May 4, 2017 [Page 13] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 uses sr:controlplane-cfg; container protocol-srgb { if-feature sr:protocol-srgb; uses sr-cmn:srgb-cfg; description "Per-protocol SRGB."; } } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/ospf:areas/ospf:area/" + "ospf:interfaces/ospf:interface" { 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 interface operational state with segment routing."; uses sr:igp-interface-cfg; } /* Database */ 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."; Yeung, et al. Expires May 4, 2017 [Page 14] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 leaf flags { type bits { bit NP { description "No-PHP flag."; } bit M { description "Mapping server flag."; } bit E { description "Explicit-NULL flag."; } bit V { description "Value/Index flag."; } bit L { 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 sid-binding-sub-tlvs { description "SID/Label binding sub-TLV grouping."; container sid-binding-sub-tlvs { description "SID binding sub-TLVs."; list sid-binding-sub-tlv { description "SID binding sub-TLV."; Yeung, et al. Expires May 4, 2017 [Page 15] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 leaf flags { type bits { bit M { description "Mirroring context flag."; } } description "Flags."; } leaf mt-id { type uint8; description "Multi-topology ID."; } leaf weight { type uint8; description "Weight for load-balancing purposes."; } uses sid-sub-tlv; container ero-metric-sub-tlv { description "The cost of an Explicit Route Object (ERO) path."; leaf metric { type uint32; description "The aggregate IGP or TE path cost."; } } container ipv4-ero-sub-tlv { description "The IPv4 ERO sub-TLV describes a path segment using IPv4 address."; leaf flags { type bits { bit L { description "If set, then the segment path is designated as 'loose'. Otherwise, the path is 'strict'."; } } description "ERO Flags."; } leaf ipv4-address { type inet:ipv4-address; description "The address of the explicit route hop."; } } Yeung, et al. Expires May 4, 2017 [Page 16] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 container unnumbered-ero-sub-tlv { description "The unnumbered interface ID ERO sub-TLV describes a path segment that includes an unnumbered interface."; leaf flags { type bits { bit L { description "If set, then the segment path is designated as 'loose'. Otherwise as 'strict'."; } } description "ERO Flags."; } leaf router-id { type yang:dotted-quad; description "Router-id of the next-hop."; } leaf interface-id { type uint32; description "The identifier assigned to the link by the router specified by the router-id."; } } container ipv4-backup-ero-sub-tlv { description "The IPv4 backup ERO sub-TLV describes a path segment using IPv4 address."; leaf flags { type bits { bit L { description "If set, then the segment path is designated as 'loose'. Otherwise as 'strict'."; } } description "Flags."; } leaf ipv4-address { type inet:ipv4-address; description "The address of the explicit route hop."; } } container unnumbered-backup-ero-sub-tlv { description "The unnumbered interface ID backup ERO sub-TLV describes a path segment that includes an Yeung, et al. Expires May 4, 2017 [Page 17] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 unnumbered interface."; leaf flags { type bits { bit L { description "If set, then the segment path is designated as 'loose'. Otherwise, the path is 'strict'."; } } description "Flags."; } leaf router-id { type yang:dotted-quad; description "Router-id of the next-hop."; } leaf interface-id { type uint32; description "The identifier assigned to the link by the router specified by the router-id."; } } } } } 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; description "The number of prefixes covered by the advertisement."; } leaf flags { type bits { bit IA { description "Inter-Area flag."; } } description "Flags."; } leaf prefix { Yeung, et al. Expires May 4, 2017 [Page 18] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 type inet:ip-prefix; description "Address prefix."; } uses prefix-sid-sub-tlvs; uses sid-binding-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; } } } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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 Yeung, et al. Expires May 4, 2017 [Page 19] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 "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; uses sid-binding-sub-tlvs; } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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; uses sid-binding-sub-tlvs; } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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 "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; uses sid-binding-sub-tlvs; } Yeung, et al. Expires May 4, 2017 [Page 20] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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 { description "Backup flag."; } bit V { description "Value/Index flag."; } bit L { description "Local/Global flag."; } bit G { description "Group flag."; } } description "Flags."; } leaf mt-id { type uint8; description "Multi-topology ID."; } leaf weight { type uint8; Yeung, et al. Expires May 4, 2017 [Page 21] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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 { description "Backup flag."; } bit V { description "Value/Index flag."; } bit L { description "Local/Global flag."; } bit G { description "Group 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; Yeung, et al. Expires May 4, 2017 [Page 22] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 description "Segment Identifier (SID) index/label."; } } } } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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; uses sid-range-tlvs; } augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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; } Yeung, et al. Expires May 4, 2017 [Page 23] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 augment "/rt:routing-state/" + "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:instance/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; } } 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 [RFC1793] Moy, J., "Extending OSPF to Support Demand Circuits", RFC 1793, DOI 10.17487/RFC1793, April 1995, . [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . Yeung, et al. Expires May 4, 2017 [Page 24] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 [RFC2328] Moy, J., "OSPF Version 2", STD 54, RFC 2328, DOI 10.17487/RFC2328, April 1998, . [RFC3101] Murphy, P., "The OSPF Not-So-Stubby Area (NSSA) Option", RFC 3101, DOI 10.17487/RFC3101, January 2003, . [RFC3623] Moy, J., Pillay-Esnault, P., and A. Lindem, "Graceful OSPF Restart", RFC 3623, DOI 10.17487/RFC3623, November 2003, . [RFC3630] Katz, D., Kompella, K., and D. Yeung, "Traffic Engineering (TE) Extensions to OSPF Version 2", RFC 3630, DOI 10.17487/RFC3630, September 2003, . [RFC4577] Rosen, E., Psenak, P., and P. Pillay-Esnault, "OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs)", RFC 4577, DOI 10.17487/RFC4577, June 2006, . [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, . [RFC5187] Pillay-Esnault, P. and A. Lindem, "OSPFv3 Graceful Restart", RFC 5187, DOI 10.17487/RFC5187, June 2008, . [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, . [RFC5880] Katz, D. and D. Ward, "Bidirectional Forwarding Detection (BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010, . Yeung, et al. Expires May 4, 2017 [Page 25] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 [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, . [RFC6565] Pillay-Esnault, P., Moyer, P., Doyle, J., Ertekin, E., and M. Lundberg, "OSPFv3 as a Provider Edge to Customer Edge (PE-CE) Routing Protocol", RFC 6565, DOI 10.17487/RFC6565, June 2012, . [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, . 6.2. Informative References [I-D.ietf-bfd-yang] Zheng, L., Rahman, R., Networks, J., Jethanandani, M., and G. Mirsky, "Yang Data Model for Bidirectional Forwarding Detection (BFD)", draft-ietf-bfd-yang-03 (work in progress), July 2016. [I-D.ietf-netmod-routing-cfg] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", draft-ietf-netmod-routing-cfg-24 (work in progress), October 2016. [I-D.ietf-ospf-yang] Yeung, D., Qu, Y., Zhang, Z., Bogdanovic, D., and K. Koushik, "Yang Data Model for OSPF Protocol", draft-ietf- ospf-yang-05 (work in progress), July 2016. [I-D.ietf-rtgwg-yang-key-chain] Lindem, A., Qu, Y., Yeung, D., Chen, I., Zhang, Z., and Y. Yang, "Routing Key Chain YANG Data Model", draft-ietf- rtgwg-yang-key-chain-10 (work in progress), October 2016. Yeung, et al. Expires May 4, 2017 [Page 26] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 [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-05 (work in progress), October 2016. Yeung, et al. Expires May 4, 2017 [Page 27] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 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 Cisco Systems 170 West Tasman Drive San Jose, CA 95134 USA EMail: yiqu@cisco.com Jeffrey Zhang Juniper Networks 10 Technology Park Drive Westford, MA 01886 USA EMail: zzhang@juniper.net Ing-Wher Chen Kuatro Technologies EMail: ichen@kuatrotech.com Yeung, et al. Expires May 4, 2017 [Page 28] Internet-Draft OSPF SR (Segment Routing) Yang Data Model October 2016 Acee Lindem Cisco Systems 301 Midenhall Way Cary, NC 27513 EMail: acee@cisco.com Yeung, et al. Expires May 4, 2017 [Page 29]