OSPF YANG Model Augmentations for Additional Features - Version 1

module: ietf-ospfv3-te
augment /rt:routing/rt:control-plane-protocols
        /rt:control-plane-protocol/ospf:ospf/ospf:mpls:
  +--rw traffic-eng
     +--rw enable?   boolean
augment /rt:routing/rt:control-plane-protocols
        /rt:control-plane-protocol/ospf:ospf/ospf:areas
        /ospf:area/ospf:interfaces/ospf:interface:
  +--rw traffic-eng
       +--rw enable?   boolean
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:ospfv3/ospf:ospfv3
        /ospf:body:
  +--ro ospfv3-intra-area-te
     +--ro router-address-tlv
     |  +--ro router-address?   inet:ipv6-address
     +--ro link-tlv
        +--ro link-type                   ospf:router-link-type
        +--ro local-if-ipv6-addrs
        |  +--ro local-if-ipv6-addr*   inet:ipv6-address
        +--ro remote-if-ipv6-addrs
        |  +--ro remote-if-ipv6-addr*   inet:ipv6-address
        +--ro te-metric?                  uint32
        +--ro max-bandwidth?
        |      rt-types:bandwidth-ieee-float32
        +--ro max-reservable-bandwidth?
        |      rt-types:bandwidth-ieee-float32
        +--ro unreserved-bandwidths
        |  +--ro unreserved-bandwidth*
        |     +--ro priority?               uint8
        |     +--ro unreserved-bandwidth?
        |            rt-types:bandwidth-ieee-float32
        +--ro admin-group?                uint32
        +--ro neighbor-id
        |  +--ro nbr-interface-id    uint32
        |  +--ro nbr-router-id       rt-types:router-id
        +--ro unknown-tlvs
           +--ro unknown-tlv*
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string

module: ietf-ospf-inter-as-te
  augment /rt:routing/rt:control-plane-protocols
          /rt:control-plane-protocol/ospf:ospf
          /ospf:mpls/ospf-te:traffic-eng:
    +--rw inter-as-te!
       +--rw flood-as-wide?   boolean
  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 inter-as-te-v2
       +--ro link-tlv
          +--ro link-type                   ospf:router-link-type
          +--ro local-if-ipv4-addrs
          |  +--ro local-if-ipv4-addr*   inet:ipv4-address
          +--ro remote-if-ipv4-addrs
          |  +--ro remote-if-ipv4-addr*   inet:ipv4-address
          +--ro te-metric?                  uint32
          +--ro max-bandwidth?              rt-types:bandwidth-ieee-float32
          +--ro max-reservable-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro unreserved-bandwidths
          |  +--ro unreserved-bandwidth* []
          |     +--ro priority?               uint8
          |     +--ro unreserved-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro admin-group?                uint32
          +--ro remote-as-number            uint32
          +--ro ipv4-remote-asbr-id?        inet:ipv4-address
          +--ro ipv6-remote-asbr-id?        inet:ipv6-address
          +--ro unknown-tlvs
             +--ro unknown-tlv* []
                +--ro type?     uint16
                +--ro length?   uint16
                +--ro value?    yang:hex-string
  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 inter-as-te-v2
       +--ro link-tlv
          +--ro link-type                   ospf:router-link-type
          +--ro local-if-ipv4-addrs
          |  +--ro local-if-ipv4-addr*   inet:ipv4-address
          +--ro remote-if-ipv4-addrs
          |  +--ro remote-if-ipv4-addr*   inet:ipv4-address
          +--ro te-metric?                  uint32
          +--ro max-bandwidth?              rt-types:bandwidth-ieee-float32
          +--ro max-reservable-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro unreserved-bandwidths
          |  +--ro unreserved-bandwidth* []
          |     +--ro priority?               uint8
          |     +--ro unreserved-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro admin-group?                uint32
          +--ro remote-as-number            uint32
          +--ro ipv4-remote-asbr-id?        inet:ipv4-address
          +--ro ipv6-remote-asbr-id?        inet:ipv6-address
          +--ro unknown-tlvs
             +--ro unknown-tlv* []
                +--ro type?     uint16
                +--ro length?   uint16
                +--ro value?    yang:hex-string
  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:ospfv3/ospf:ospfv3/ospf:body:
    +--ro inter-as-te-v3
       +--ro link-tlv
          +--ro link-type                   ospf:router-link-type
          +--ro local-if-ipv6-addrs
          |  +--ro local-if-ipv6-addr*   inet:ipv6-address
          +--ro remote-if-ipv6-addrs
          |  +--ro remote-if-ipv6-addr*   inet:ipv6-address
          +--ro te-metric?                  uint32
          +--ro max-bandwidth?             rt-types:bandwidth-ieee-float32
          +--ro max-reservable-bandwidth?  rt-types:bandwidth-ieee-float32
          +--ro unreserved-bandwidths
          |  +--ro unreserved-bandwidth* []
          |     +--ro priority?               uint8
          |     +--ro unreserved-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro admin-group?                uint32
          +--ro remote-as-number            uint32
          +--ro ipv4-remote-asbr-id?        inet:ipv4-address
          +--ro ipv6-remote-asbr-id?        inet:ipv6-address
          +--ro unknown-tlvs
             +--ro unknown-tlv* []
                +--ro type?     uint16
                +--ro length?   uint16
                +--ro value?    yang:hex-string
  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:ospfv3
          /ospf:ospfv3/ospf:body:
    +--ro inter-as-te-v3
       +--ro link-tlv
          +--ro link-type                   ospf:router-link-type
          +--ro local-if-ipv6-addrs
          |  +--ro local-if-ipv6-addr*   inet:ipv6-address
          +--ro remote-if-ipv6-addrs
          |  +--ro remote-if-ipv6-addr*   inet:ipv6-address
          +--ro te-metric?                  uint32
          +--ro max-bandwidth?              rt-types:bandwidth-ieee-float32
          +--ro max-reservable-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro unreserved-bandwidths
          |  +--ro unreserved-bandwidth* []
          |     +--ro priority?               uint8
          |     +--ro unreserved-bandwidth?   rt-types:bandwidth-ieee-float32
          +--ro admin-group?                uint32
          +--ro remote-as-number            uint32
          +--ro ipv4-remote-asbr-id?        inet:ipv4-address
          +--ro ipv6-remote-asbr-id?        inet:ipv6-address
          +--ro unknown-tlvs
             +--ro unknown-tlv* []
                +--ro type?     uint16
                +--ro length?   uint16
                +--ro value?    yang:hex-string

<CODE BEGINS> file "[email protected]"
module ietf-ospf-inter-as-te {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-inter-as-te";

  prefix ospf-inter-as-te;

  import ietf-inet-types {
    prefix inet;
    reference
      "RFC 6991: Common YANG Data Types";
  }

  import ietf-routing-types {
    prefix rt-types;
    reference
      "RFC 8294: Common YANG Data Types for the Routing Area";
  }

  import ietf-routing {
    prefix rt;
    reference
      "RFC 8349: A YANG Data Model for Routing
                 Management (NMDA Version)";
  }

  import ietf-ospf {
    prefix ospf;
    reference
      "RFC 9129: YANG Data Model for the OSPF Protocol";
  }

  import ietf-ospf-te {
    prefix ospf-te;
    reference
      "RFC 3630: Traffic Engineering (TE) Extensions to OSPF Version 2
       RFC 5329: Traffic Engineering Extensions to OSPF Version 3";
  }

  organization
    "IETF LSR - Link State Routing Working Group";

  contact
     "WG Web:   <https://datatracker.ietf.org/wg/lsr/>
      WG List:  <mailto:[email protected]>

      Author:   Yingzhen Qu
                <mailto:[email protected]>
      Author:   Acee Lindem
                <mailto:[email protected]>";

  description
    "This YANG module defines the configuration and operational
     state for OSPF Extensions in Support of Inter-Autonomous
     System (AS) MPLS and GMPLS Traffic Engineering as defined
     in RFC 5392.

     Copyright (c) 2025 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 Revised BSD License set
     forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC XXXX;
     see the RFC itself for full legal notices.";

  reference "RFC XXXX";

  revision 2025-02-27 {
    description
      "Initial version";
    reference
      "RFC XXXX: OSPF YANG Model Augmentations for Additional
                 Features - Version 1";
  }

  identity ospfv3-intra-area-te-lsa {
    base ospf:ospfv3-lsa-type;
    description
      "OSPFv3 Intrea-area TE LSA.";
  }

  grouping inter-as-te-v2-lsa {
    description
      "Grouping for OSPF Inter-AS-TE-2 LSA.";
    container inter-as-te-v2 {
      description
        "The Inter-AS-TE-v2 LSA.";

      container link-tlv {
        description
          "Describes a single link.  It is constructed
           from a set of sub-TLVs.";
        leaf link-type {
          type ospf:router-link-type;
          mandatory true;
          description
            "Link type.";
        }
        container local-if-ipv4-addrs {
          description
            "All local interface IPv4 addresses.";
          leaf-list local-if-ipv4-addr {
            type inet:ipv4-address;
            description
              "List of local interface IPv4 addresses.";
          }
        }
        container remote-if-ipv4-addrs {
          description
            "All remote interface IPv4 addresses.";
          leaf-list remote-if-ipv4-addr {
            type inet:ipv4-address;
            description
              "List of remote interface IPv4 addresses.";
          }
        }
        leaf te-metric {
          type uint32;
          description
            "TE metric.";
        }
        leaf max-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "Maximum bandwidth.";
        }
        leaf max-reservable-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "Maximum reservable bandwidth.";
        }
        container unreserved-bandwidths {
          description
            "All unreserved bandwidths.";
          list unreserved-bandwidth {
            leaf priority {
              type uint8 {
                range "0 .. 7";
              }
            description
              "Priority from 0 to 7.";
               }
            leaf unreserved-bandwidth {
              type rt-types:bandwidth-ieee-float32;
              description
                "Unreserved bandwidth.";
            }
            description
              "List of unreserved bandwidths for different
               priorities.";
          }
        }
        leaf admin-group {
          type uint32;
          description
            "Administrative Group / Resource Class/Color.";
        }
        leaf remote-as-number {
          type uint32;
          mandatory true;
          description
            "Remote AS number.";
        }
        leaf ipv4-remote-asbr-id {
          type inet:ipv4-address;
          description
            "The neighboring ASBR IPv4 address.";
        }
        leaf ipv6-remote-asbr-id {
          type inet:ipv6-address;
          description
            "The neighboring ASBR IPv6 address.";
        }
        uses ospf:unknown-tlvs;
      }
    }
  }
  grouping inter-as-te-v3 {
    description
      "Grouping for OSPFv3 inter-as-te-v3 lsa.";
    container inter-as-te-v3 {
      container link-tlv {
        description
          "Describes a single link, and it is constructed
           of a set of Sub-TLVs.";
        leaf link-type {
          type ospf:router-link-type;
          mandatory true;
          description
            "Link type.";
        }

        container local-if-ipv6-addrs {
          description
            "All local interface IPv6 addresses.";
          leaf-list local-if-ipv6-addr {
            type inet:ipv6-address;
            description
              "List of local interface IPv6 addresses.";
          }
        }

        container remote-if-ipv6-addrs {
          description
            "All remote interface IPv6 addresses.";
          leaf-list remote-if-ipv6-addr {
            type inet:ipv6-address;
            description
              "List of remote interface IPv6 addresses.";
          }
        }

        leaf te-metric {
          type uint32;
          description
            "TE metric.";
        }

        leaf max-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "Maximum bandwidth.";
        }

        leaf max-reservable-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "Maximum reservable bandwidth.";
        }

        container unreserved-bandwidths {
          description
            "All unreserved bandwidths.";
          list unreserved-bandwidth {
            leaf priority {
              type uint8 {
                range "0 .. 7";
              }
              description
                "Priority from 0 to 7.";
            }
            leaf unreserved-bandwidth {
              type rt-types:bandwidth-ieee-float32;
              description
                "Unreserved bandwidth.";
            }
            description
              "List of unreserved bandwidths for different
               priorities.";
          }
        }

        leaf admin-group {
          type uint32;
          description
            "Administrative group/Resource Class/Color.";
        }

        leaf remote-as-number {
          type uint32;
          mandatory true;
          description
            "Remote AS number.";
        }
        leaf ipv4-remote-asbr-id {
          type inet:ipv4-address;
          description
            "The neighboring ASBR IPv4 address.";
        }
        leaf ipv6-remote-asbr-id {
          type inet:ipv6-address;
          description
            "The neighboring ASBR IPv6 address.";
        }
        uses ospf:unknown-tlvs;
      }

      description
        "OSPFv3 Inter-AS-TE-v3 LSA.";
      reference
        "RFC 5392: TOSPF Extensions in Support of Inter-Autonomous
         System (AS) MPLS and GMPLS Traffic Engineering";
    }
  }

  /* Configuration */
  augment "/rt:routing/"
        + "rt:control-plane-protocols/rt:control-plane-protocol/"
        + "ospf:ospf/ospf:mpls/ospf-te:traffic-eng" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
          + "rt:control-plane-protocol/rt:type, 'ospf:ospf')" {
      description
        "This augment OSPF routing protocol when used";
    }
    description
      "This augments OSPF protocol traffic engineering configuration
       with Inter-AS-TE configuration.";
    container inter-as-te {
      presence "Enable Inter-AS-TE";
      description
        "OSPFv3 MPLS TE configuration.";
      leaf flood-as-wide {
        type boolean;
        default "false";
        description
          "Enables as-scoped traffic engineering advertisement. By
           default, the inter-as TE link advertisement is limited to
           within the single area.";
      }
      reference
        "RFC 5392: OSPF Extensions in Support of Inter-Autonomous
                   System (AS) MPLS and GMPLS Traffic Engineering";
    }
  }

  /* Database */
  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 "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augments OSPFv2 routing protocol when used";
         }
      description
        "OSPFv2 type 10 Opaque LSA.";
      uses inter-as-te-v2-lsa;
    }

  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 "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augments OSPFv2 routing protocol when used";
         }
      description
        "OSPFv2 type 11 Opaque LSA.";
      uses inter-as-te-v2-lsa;
    }

  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:ospfv3/"
        + "ospf:ospfv3/ospf:body" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "OSPFv3 Intra-Area-TE-LSA.";

    uses inter-as-te-v3;
  }

  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:ospfv3/"
        + "ospf:ospfv3/ospf:body" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "OSPFv3 Intra-Area-TE-LSA.";

    uses inter-as-te-v3;
  }
}

module: ietf-ospf-two-part-metric
augment /rt:routing/rt:control-plane-protocols
       /rt:control-plane-protocol/ospf:ospf/ospf:areas/ospf:area
       /ospf:interfaces/ospf:interface:
 +--rw two-part-metric
    +--rw enable?           boolean
    +--rw int-input-cost?   ospf:ospf-link-metric
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 network-to-router-metric-sub-tlvs
    +--ro net-to-rtr-sub-tlv*
       +--ro mt-id?       uint8
       +--ro mt-metric?   uint16
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:te-opaque/ospf:link-tlv:
 +--ro network-to-router-te-metric?   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:ospfv3/ospf:ospfv3
       /ospf:body/ospfv3-te:ospfv3-intra-area-te/ospfv3-te:link-tlv:
 +--ro network-to-router-te-metric?   uint32

module: ietf-ospf-graceful-link-shutdown
augment /rt:routing/rt:control-plane-protocols
       /rt:control-plane-protocol/ospf:ospf/ospf:areas/ospf:area
       /ospf:interfaces/ospf:interface:
 +--rw graceful-link-shutdown
    +--rw enable?   boolean
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 graceful-link-shutdown-sub-tlv!
 +--ro remote-address-sub-tlv
 |  +--ro remote-address?   inet:ipv4-address
 +--ro local-remote-int-id-sub-tlv
    +--ro local-int-id?    uint32
    +--ro remote-int-id?   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:ospfv3/ospf:ospfv3
       /ospf:body/ospfv3-e-lsa:e-router/ospfv3-e-lsa:e-router-tlvs
       /ospfv3-e-lsa:link-tlv:
 +--ro graceful-link-shutdown-sub-tlv!

module: ietf-ospf-lls-local-id
  augment /rt:routing/rt:control-plane-protocols
          /rt:control-plane-protocol/ospf:ospf:
    +--rw lls-int-id
       +--rw enable?   boolean

module: ietf-ospf-msd
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:ri-opaque:
  +--ro node-msd-tlv
     +--ro node-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   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
        /ospf:ri-opaque:
  +--ro node-msd-tlv
     +--ro node-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   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:ospfv3/ospf:ospfv3
        /ospf:body/ospf:router-information:
  +--ro node-msd-tlv
     +--ro node-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   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:ospfv3/ospf:ospfv3/ospf:body
        /ospf:router-information:
  +--ro node-msd-tlv
     +--ro node-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   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/ospf:extended-link-opaque
        /ospf:extended-link-tlv:
  +--ro link-msd-sub-tlv
     +--ro link-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   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:ospfv3/ospf:ospfv3
        /ospf:body/ospfv3-e-lsa:e-router/ospfv3-e-lsa:e-router-tlvs
        /ospfv3-e-lsa:link-tlv::
  +--ro link-msd-sub-tlv
     +--ro link-msds* [msd-type]
        +--ro msd-type     identityref
        +--ro msd-value?   uint8

module: ietf-ospf-link-attr
augment /rt:routing/rt:control-plane-protocols
        /rt:control-plane-protocol/ospf:ospf:
  +--rw ospf-link-attr
     +--rw (link-attr-op-mode)
        +--:(legacy)
        |  +--rw legacy?         empty
        +--:(transition)
        |  +--rw transition?     empty
        +--:(app-specific)
           +--rw app-specific?   empty
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 app-specific-link-attr-sub-tlvs
     +--ro asla-sub-tlvs* []
        +--ro sabm-length?                    uint8
        +--ro udabm-length?                   uint8
        +--ro sabm
        |  +--ro sabm-bits*   identityref
        +--ro udabm
        +--ro link-attributes-sub-sub-tlvs
           +--ro unknown-tlvs
              +--ro unknown-tlv* []
                 +--ro type?     uint16
                 +--ro length?   uint16
                 +--ro value?    yang:hex-string
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:ospfv3/ospf:ospfv3
        /ospf:body/ospfv3-e-lsa:e-router/ospfv3-e-lsa:e-router-tlvs
        /ospfv3-e-lsa:link-tlv:
  +--ro app-specific-link-attr-sub-tlvs
     +--ro asla-sub-tlvs* []
        +--ro sabm-length?                    uint8
        +--ro udabm-length?                   uint8
        +--ro sabm
        |  +--ro sabm-bits*   identityref
        +--ro udabm
        +--ro link-attributes-sub-sub-tlvs
           +--ro unknown-tlvs
              +--ro unknown-tlv* []
                 +--ro type?     uint16
                 +--ro length?   uint16
                 +--ro value?    yang:hex-string

module: ietf-ospf-l2-bundle
  augment /rt:routing/rt:control-plane-protocols
          /rt:control-plane-protocol/ospf:ospf/ospf:areas
          /ospf:area/ospf:interfaces/ospf:interface:
    +--rw l2-mbr-attrs
       +--rw l2-mbr-attr* [l2-bdl-mbr-dscpr]
          +--rw l2-bdl-mbr-dscpr    uint32
          +--rw adj-sid?            uint32
          +--rw lan-adj-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 l2-bdl-mbr-attr
       +--ro l2-bdl-mbrs* []
          +--ro l2-bdl-mbr-dscpr?                  uint32
          +--ro adj-sid-sub-tlvs
          |  +--ro adj-sid-sub-tlv* []
          |     +--ro adj-sid-flags
          |     |  +--ro flags*   identityref
          |     +--ro mt-id?           uint8
          |     +--ro weight?          uint8
          |     +--ro sid?             uint32
          +--ro lan-adj-sid-sub-tlv
          |  +--ro lan-adj-sid-sub-tlv* []
          |     +--ro lan-adj-sid-flags
          |     |  +--ro flags*   identityref
          |     +--ro mt-id?                uint8
          |     +--ro weight?               uint8
          |     +--ro neighbor-router-id?   rt-types:router-id
          |     +--ro sid?                  uint32
          +--ro app-specific-link-attr-sub-tlvs
             +--ro asla-sub-tlvs* []
                +--ro sabm-length?                    uint8
                +--ro udabm-length?                   uint8
                +--ro sabm
                |  +--ro sabm-bits*   identityref
                +--ro udabm
                +--ro link-attributes-sub-sub-tlvs
                   +--ro unknown-tlvs
                      +--ro unknown-tlv* []
                         +--ro type?     uint16
                         +--ro length?   uint16
                         +--ro value?    yang:hex-string
  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:ospfv3/ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router
          /ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv:
    +--ro l2-bdl-mbr-attr
       +--ro l2-bdl-mbrs* []
          +--ro l2-bdl-mbr-dscpr?                  uint32
          +--ro adj-sid-sub-tlvs
          |  +--ro adj-sid-sub-tlv* []
          |     +--ro adj-sid-flags
          |     |  +--ro flags*   identityref
          |     +--ro weight?          uint8
          |     +--ro sid?             uint32
          +--ro lan-adj-sid-sub-tlvs
          |  +--ro lan-adj-sid-sub-tlv* []
          |     +--ro lan-adj-sid-flags
          |     |  +--ro flags*   identityref
          |     +--ro weight?               uint8
          |     +--ro neighbor-router-id?   rt-types:router-id
          |     +--ro sid?                  uint32
          +--ro app-specific-link-attr-sub-tlvs
             +--ro asla-sub-tlvs* []
                +--ro sabm-length?                    uint8
                +--ro udabm-length?                   uint8
                +--ro sabm
                |  +--ro sabm-bits*   identityref
                +--ro udabm
                +--ro link-attributes-sub-sub-tlvs
                   +--ro unknown-tlvs
                      +--ro unknown-tlv* []
                         +--ro type?     uint16
                         +--ro length?   uint16
                         +--ro value?    yang:hex-string

<CODE BEGINS> file "[email protected]"
module ietf-ospf-l2-bundle {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-l2-bundle";

  prefix ospf-l2-bundle;

  import ietf-routing-types {
    prefix rt-types;
    reference
      "RFC 8294: Common YANG Data Types for the Routing Area";
  }

  import ietf-routing {
    prefix rt;
    reference
      "RFC 8349: A YANG Data Model for Routing
                 Management (NMDA Version)";
  }

  import ietf-ospf {
    prefix ospf;
    reference
      "RFC 9129: YANG Data Model for the OSPF Protocol";
  }

  import ietf-ospf-link-attr {
    prefix ospf-link-attr;
  }

  import ietf-ospfv3-extended-lsa {
    prefix ospfv3-e-lsa;
    reference
      "RFC 9587 - YANG Data Model for OSPFv3 Extended LSAs";
  }

  import ietf-ospf-sr-mpls {
    prefix ospf-sr-mpls;
  }

  organization
    "IETF LSR - Link State Routing Working Group";

  contact
     "WG Web:   <https://datatracker.ietf.org/wg/lsr/>
      WG List:  <mailto:[email protected]>

      Author:   Yingzhen Qu
                <mailto:[email protected]>
      Author:   Acee Lindem
                <mailto:[email protected]>";

  description
    "This YANG module defines the configuration and operational
     state for Advertising Layer 2 Bundle Member Link Attributes
     in OSPF as defined in RFC 9356.

     Copyright (c) 2025 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 Revised BSD License set
     forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC XXXX;
     see the RFC itself for full legal notices.";

  reference "RFC XXXX";

  revision 2025-02-27 {
    description
      "Initial version";
    reference
      "RFC XXXX: OSPF YANG Model Augmentations for Additional
                 Features - Version 1";
  }

  /* Groupings */
  grouping ospfv2-member-link-attr-sub-tlvs {
    description
      "OSPFv2 L2 Bundle Member Attributes sub-TLV (RFC 9356).";

    container adj-sid-sub-tlvs {
      list adj-sid-sub-tlv {
        description
          "List of adj-sid sub-tlvs.";
        container adj-sid-flags {
          leaf-list flags {
            type identityref {
              base ospf-sr-mpls:adj-sid-flag;
            }
          description
            "Adj-SID sub-TLV flags.";
          }
          description
            "Adj-sid sub-TLV flags.";
        }
        leaf mt-id {
          type uint8;
          description
            "Multi-topology ID. Topologies range from 0-127 and
             return of any other value would indicate an error.";
          reference
            "RFC 4915 - Multi-Topology (MT) Routing in OSPF";
        }
        leaf weight {
          type uint8;
          description
            "Weight used for load-balancing.";
        }
        leaf sid {
          type uint32;
          description
            "Segment Identifier (SID) - A 20 bit label or
             an index into the SID/Label space.";
        }
      }
      description
        "Adjacency SID sub-tlvs.";
    }
    container lan-adj-sid-sub-tlv {
      description
        "LAN Adj-SID optional sub-TLVs.";
      list lan-adj-sid-sub-tlv {
        description
          "List of LAN Adj-SID sub-TLVs.";
        container lan-adj-sid-flags {
          leaf-list flags {
            type identityref {
              base ospf-sr-mpls:adj-sid-flag;
            }
            description
              "LAN Adj-SID sub-TLV flags.";
          }
          description
            "LAN Adj-SID sub-TLV flags.";
        }
        leaf mt-id {
          type uint8;
          description
            "Multi-topology ID. Topologies range from 0-127 and
             return of any other value would indicate an error.";
          reference
            "RFC 4915 - Multi-Topology (MT) Routing in OSPF";
        }
        leaf weight {
          type uint8;
          description
            "Weight used for load-balancing.";
        }
        leaf neighbor-router-id {
          type rt-types:router-id;
          description
            "Neighbor router ID.";
        }
        leaf sid {
          type uint32;
          description
            "Segment Identifier (SID) - A 20 bit label or
             an index into the SID/Label space.

             If the  V-Flag is set to 0 and L-Flag is set to 0:
             The SID/Index/Label field is a 4-octet index defining
             the offset in the SID/Label space advertised by this
             router.

             If V-Flag is set to 1 and L-Flag is set to 1: The
             SID/Index/Label field is a 3-octet local label where
             the 20 rightmost bits are used for encoding the label
             value.";
        }
      }
    }

    uses ospf-link-attr:app-specific-link-attr-sub-tlvs;
  }

  grouping ospfv3-member-link-attr-sub-tlvs {
    description
      "OSPFv3 L2 Bundle Member Attributes sub-TLV (RFC 9356).";

    uses ospf-sr-mpls:ospfv3-adj-sid-sub-tlvs;
    uses ospf-sr-mpls:ospfv3-lan-adj-sid-sub-tlvs;
    uses ospf-link-attr:app-specific-link-attr-sub-tlvs;
  }

  /* Configuration */
  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/ospf:ospf/"
        + "ospf:areas/ospf:area/ospf:interfaces/ospf:interface" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
       + "rt:control-plane-protocol/rt:type, 'ospf:ospf')" {
      description
        "This augments the OSPF routing protocol when used.";
    }
    description
      "This augments the OSPF interface configuration with L2
       Bundle Member Attributes.";

    container l2-mbr-attrs {
      description
        "L2 member attributes configuration.";
      list l2-mbr-attr {
        key l2-bdl-mbr-dscpr;
        leaf l2-bdl-mbr-dscpr {
          type uint32;
          description
            "L2 bundle member descriptor: a 4-octet link-local
             identifier for the member link.";
        }
        leaf adj-sid {
          type uint32;
          description
            "Value of the Adj-SID.";
        }
        leaf lan-adj-sid {
          type uint32;
          description
            "Value of the LAN-Adj-SID.";
        }
        /* More configuration can be added here */
        description
          "List of L2 bundle members.";
      }
    }

  }

  /* Database */
  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 "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }
    description
      "OSPFv2 L2 Bundle Member Attributes sub-TLV is
       a sub-TLV of OSPFv2 Extended Link TLV (RFC7684).";

    container l2-bdl-mbr-attr {
      list l2-bdl-mbrs {
        description
          "List of L2 bundle members.";
        leaf l2-bdl-mbr-dscpr {
          type uint32;
          description
            "L2 bundle member descriptor: a 4-octet link-local
             identifier for the member link.";
        }
        uses ospfv2-member-link-attr-sub-tlvs;
      }
      description
        "OSPFv2 L2 Bundle Member Attributes sub-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:ospfv3/"
       + "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router/"
       + "ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
         description
           "This augmentation is only valid for OSPFv3
            E-Router LSAs";
       }
    description
      "Augment OSPFv3 Area scope router-link TLV.";

    container l2-bdl-mbr-attr {
      list l2-bdl-mbrs {
        description
          "List of L2 bundle members.";
        leaf l2-bdl-mbr-dscpr {
          type uint32;
          description
            "L2 bundle member descriptor: a 4-octet link-local
             identifier for the member link.";
        }
        uses ospfv3-member-link-attr-sub-tlvs;
      }
      description
        "OSPFv3 L2 Bundle Member Attributes sub-TLV.";
    }
  }
}

module: ietf-ospf-flex-algo
augment /rt:routing/rt:control-plane-protocols
        /rt:control-plane-protocol/ospf:ospf:
  +--rw ospf-flex-algo
     +--rw flex-algo* [algo-number]
        +--rw algo-number             uint8
        +--rw advertise-definition?   boolean
        +--rw admin-groups {te-types:extended-admin-groups,
                            te-types:named-extended-admin-groups}?
        |  +--rw exclude-admin-groups*  -> /te:te/globals
                                           /named-admin-groups
                                           /named-admin-group/name
        |  +--rw include-any-admin-groups*   -> /te:te/globals
                                           /named-admin-groups
                                           /named-admin-group/name
        |  +--rw include-all-admin-groups*   -> /te:te/globals
                                           /named-admin-groups
                                           /named-admin-group/name
        +--rw exclude-srlgs*       -> /te:te/globals/named-srlgs
                                      /named-srlg/name
                                      {te-types:named-srlg-groups}?
        +--rw fast-reroute?           boolean
        +--rw metric-type?            identityref
        +--rw microloop-avoidance?    boolean
        +--rw prefix-metric!
        +--rw priority?               uint8
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:ri-opaque:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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:ri-opaque:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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:ri-opaque:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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:ospfv3/ospf:ospfv3
        /ospf:body/ospf:router-information:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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:ospfv3/ospf:ospfv3
        /ospf:body/ospf:router-information:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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:ospfv3/ospf:ospfv3/ospf:body
        /ospf:router-information:
  +--ro fad-tlvs
     +--ro fad-tlv* []
        +--ro flex-algo?              uint8
        +--ro metric-type?            identityref
        +--ro calc-type?              uint8
        +--ro priority?               uint8
        +--ro fa-ex-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-any-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fa-in-all-ag-sub-tlv
        |  +--ro extended-admin-groups*   uint64
        +--ro fad-flags-sub-tlv
        |  +--ro fad-flags*   identityref
        +--ro fa-ex-srlg-sub-tlv
        |  +--ro srlgs*   uint32
        +--ro unknown-tlvs
           +--ro unknown-tlv* []
              +--ro type?     uint16
              +--ro length?   uint16
              +--ro value?    yang:hex-string
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-opaque
        /ospf:extended-prefix-tlv:
  +--ro fapm-sub-tlvs
     +--ro fapm-sub-tlv* []
        +--ro flex-algo?    uint8
        +--ro fapm-flags*   identityref
        +--ro metric?       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 fapm-sub-tlvs
     +--ro fapm-sub-tlv* []
        +--ro flex-algo?    uint8
        +--ro fapm-flags*   identityref
        +--ro metric?       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 fapm-sub-tlvs
     +--ro fapm-sub-tlv* []
        +--ro flex-algo?    uint8
        +--ro fapm-flags*   identityref
        +--ro metric?       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:ospfv3/ospf:ospfv3
        /ospf:body/ospfv3-e-lsa:e-inter-area-prefix
        /ospfv3-e-lsa:e-inter-prefix-tlvs
        /ospfv3-e-lsa:inter-prefix-tlv:
  +--ro fapm-sub-tlvs
     +--ro fapm-sub-tlv* []
        +--ro flex-algo?    uint8
        +--ro fapm-flags*   identityref
        +--ro metric?       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:ospfv3/ospf:ospfv3/ospf:body
        /ospfv3-e-lsa:e-as-external/ospfv3-e-lsa:e-external-tlvs
        /ospfv3-e-lsa:external-prefix-tlv:
  +--ro fapm-sub-tlvs
     +--ro fapm-sub-tlv* []
        +--ro flex-algo?    uint8
        +--ro fapm-flags*   identityref
        +--ro metric?       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:
  +--ro eia-asbr-opaque
     +--ro eia-asbr-tlv
     |  +--ro asbr-rtr-id?     rt-types:router-id
     |  +--ro faam-sub-tlvs
     |  |  +--ro faam-sub-tlv* []
     |  |     +--ro flex-algo?   uint8
     |  |     +--ro metric?      uint32
     |  +--ro unknown-tlvs
     |     +--ro unknown-tlv* []
     |        +--ro type?     uint16
     |        +--ro length?   uint16
     |        +--ro value?    yang:hex-string
     +--ro unknown-tlvs
        +--ro unknown-tlv* []
           +--ro type?     uint16
           +--ro length?   uint16
           +--ro value?    yang:hex-string
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:ospfv3/ospf:ospfv3
        /ospf:body/ospfv3-e-lsa:e-inter-area-router
        /ospfv3-e-lsa:e-inter-router-tlvs
        /ospfv3-e-lsa:inter-router-tlv:
  +--ro faam-sub-tlvs
     +--ro faam-sub-tlv* []
        +--ro flex-algo?   uint8
        +--ro metric?      uint32

module: ietf-ospf-flex-algo-bw-con
  augment /rt:routing/rt:control-plane-protocols
          /rt:control-plane-protocol/ospf:ospf/ospf:areas
          /ospf:area/ospf:interfaces/ospf:interface:
    +--rw generic-metrics
       +--rw generic-metric* [metric-type]
          +--rw metric-type     identityref
          +--rw metric-value?   uint32
  augment /rt:routing/rt:control-plane-protocols
          /rt:control-plane-protocol/ospf:ospf
          /ospf-flex-algo:ospf-flex-algo/ospf-flex-algo:flex-algo:
    +--rw bandwidth-constraints
    |  +--rw constraint* [constraint-type]
    |     +--rw constraint-type    identityref
    |     +--rw bandwidth-value?   te-types:te-bandwidth
    |     +--rw threshold?         uint8
    +--rw (metric-derivation-method)?
    |  +--:(reference-bandwidth)
    |  |  +--rw reference-bandwidth
    |  |     +--rw reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  |     +--rw granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    |  +--:(bandwidth-thresholds)
    |     +--rw bandwidth-thresholds
    |        +--rw bandwidth-threshold* [bandwidth-threshold]
    |           +--rw bandwidth-threshold    rt-types:bandwidth-ieee-float32
    |           +--rw threshold-metric?      uint32
    +--rw exclude-min-bw?               rt-types:bandwidth-ieee-float32
    +--rw exclude-max-delay?            rt-types:uint24
  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:te-opaque
          /ospf:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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-inter-as-te:inter-as-te-v2/ospf-inter-as-te:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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-inter-as-te:inter-as-te-v2/ospf-inter-as-te:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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:ospfv3/ospf:ospfv3/ospf:body
          /ospf-te:ospfv3-intra-area-te/ospf-te:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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:ospfv3/ospf:ospfv3/ospf:body
          /ospf-inter-as-te:inter-as-te-v3/ospf-inter-as-te:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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:ospfv3/ospf:ospfv3
          /ospf:body/ospf-inter-as-te:inter-as-te-v3
          /ospf-inter-as-te:link-tlv:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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
          /ospf-link-attr:app-specific-link-attr-sub-tlvs:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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:ospfv3/ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router
          /ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv
          /ospf-link-attr:app-specific-link-attr-sub-tlvs:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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
          /ospf-l2-bundle:l2-bdl-mbr-attr/ospf-l2-bundle:l2-bdl-mbrs:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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:ospfv3/ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router
          /ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv
          /ospf-l2-bundle:l2-bdl-mbr-attr/ospf-l2-bundle:l2-bdl-mbrs:
    +--ro generic-metric-sub-tlvs
       +--ro generic-metric-sub-tlv* []
          +--ro metric-type?   identityref
          +--ro value?         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/ospf:ri-opaque
          /ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      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:ri-opaque
          /ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      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:ri-opaque/ospf-flex-algo:fad-tlvs
          /ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      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:ospfv3
          /ospf:ospfv3/ospf:body/ospf:router-information
          /ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      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:ospfv3/ospf:ospfv3/ospf:body/ospf:router-information
          /ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      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:ospfv3/ospf:ospfv3/ospf:body
          /ospf:router-information/ospf-flex-algo:fad-tlvs
          /ospf-flex-algo:fad-tlv:
    +--ro faemb-sub-tlv
    |  +--ro min-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro faemd-sub-tlv
    |  +--ro max-link-delay?   rt-types:uint24
    +--ro fadrb-sub-tlv
    |  +--ro fadrb-flags*             identityref
    |  +--ro reference-bandwidth?     rt-types:bandwidth-ieee-float32
    |  +--ro granularity-bandwidth?   rt-types:bandwidth-ieee-float32
    +--ro fadbt-sub-tlv
       +--ro fadbt-flags*           identityref
       +--ro bandwidth-threshold* []
          +--ro bandwidth-threshold?   rt-types:bandwidth-ieee-float32
          +--ro threshold-metric?      uint32

<CODE BEGINS> file "[email protected]"
module ietf-ospf-flex-algo-bw-con {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo-bw-con";
  prefix ospf-flex-algo-bw-con;

  import ietf-routing {
    prefix rt;
    reference "RFC 8349: A YANG Data Model for Routing
               Management (NMDA Version)";
  }

  import ietf-routing-types {
    prefix rt-types;
    reference
      "RFC 8294: Common YANG Data Types for the Routing Area";
  }

  import ietf-te-types {
    prefix te-types;
    reference
      "RFC8776: Common YANG Data Types for Traffic Engineering.";
  }

  import ietf-ospf {
    prefix ospf;
    reference
      "RFC 9129: YANG Data Model for the OSPF Protocol";
  }

  import ietf-ospfv3-extended-lsa {
    prefix ospfv3-e-lsa;
    reference
      "RFC 9587: YANG Data Model for OSPFv3 Extended Link
                 State Advertisements (LSAs)";
  }

  import ietf-ospf-te {
    prefix ospf-te;
  }

  import ietf-ospf-flex-algo {
    prefix ospf-flex-algo;
    reference
      "RFC XXXX";
  }

  import ietf-ospf-link-attr {
    prefix ospf-link-attr;
  }

  import ietf-ospf-inter-as-te {
    prefix ospf-inter-as-te;
  }

  import ietf-ospf-l2-bundle {
    prefix ospf-l2-bundle;
  }

  organization
    "IETF LSR - Link State Routing Working Group";
  contact
    "WG Web:   <https://datatracker.ietf.org/wg/lsr/>
     WG List:  <mailto:[email protected]>


     Author:    Yingzhen Qu
               <mailto:[email protected]>
     Author:    Acee Lindem
               <mailto:[email protected]>
    ";

  description
    "The YANG module defines the configuration and operational
     state for OSPF protocol as defined in
     draft-ietf-lsr-flex-algo-bw-con, IGP Flexible Algorithms:
     Bandwidth, Delay, Metrics and Constraints

     This YANG model conforms to the Network Management
     Datastore Architecture (NMDA) as described in RFC 8342.

     Copyright (c) 2025 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 Revised BSD License set
     forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC XXXX;
     see the RFC itself for full legal notices.

     The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
     NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
     'MAY', and 'OPTIONAL' in this document are to be interpreted as
     described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
     they appear in all capitals, as shown here.";


  reference "RFC XXXX: YANG Data Model for OSPF Flexible Algorithm.";

  revision 2025-02-27 {
    description
      "Initial Version";
    reference
      "RFC XXXX: OSPF YANG Model Augmentations for Additional
                 Features - Version 1.";
  }

  /* Identities */

  identity bandwidth-metric {
    base ospf-flex-algo:metric-type;
    description
      "Bandwidth metric type.";
  }

  identity bandwidth-constraint-type {
    description
      "Base identity for bandwidth constraint types.";
  }

  identity min-bw {
    base bandwidth-constraint-type;
    description
      "Minimum bandwidth constraint.";
  }

  identity max-bw {
    base bandwidth-constraint-type;
    description
      "Maximum bandwidth constraint.";
  }

  identity fadrb-flags {
    description
      "Base identity for OSPF Flexible Algorithm Definition
       Reference Bandwidth sub-tlv flags.";
  }

  identity g-bit {
    base fadrb-flags;
    description
      "G bit, when set, interface group mode MUST be used to
       derive total link bandwidth.";
  }

  identity fadbt-flags {
    description
      "Base identity for OSPF Flexible Algorithm Definition
       Reference Bandwidth sub-tlv flags.";
  }

  identity gp-bit {
    base fadbt-flags;
    description
      "G bit, when set, interface group mode MUST be used to
       derive total link bandwidth.";
  }

  /* Groupings */
  grouping bandwidth-constraint {
    description
      "Grouping for bandwidth constraints in Flex-Algo.";
    container bandwidth-constraints {
      list constraint {
        key "constraint-type";
        description
          "List of bandwidth constraints for the Flex-Algo.";
        leaf constraint-type {
          type identityref {
            base bandwidth-constraint-type;
          }
          description
            "Type of bandwidth constraint (e.g., min-bw, max-bw).";
        }
        leaf bandwidth-value {
          type te-types:te-bandwidth;
          description
            "Bandwidth value for the constraint.";
        }
        leaf threshold {
          type uint8 {
            range "1..100";
          }
          units "percent";
          description
            "Threshold percentage for triggering re-optimization.";
        }
      }
      description
        "Bandwidth constraints configuration for flex-algo.";
    }
  }

  grouping generic-metric-sub-tlv {
    container generic-metric-sub-tlvs {
      list generic-metric-sub-tlv {
        leaf metric-type {
          type identityref {
            base ospf-flex-algo:metric-type;
          }
            description
              "Type of metric to be used during the calculation.";
        }
        leaf value {
          type uint32;
          description
            "A 32-bit unsigned integer representing the metric value.";
        }
        description
          "The list of generic metric sub-tlvs.";
      }
      description
        "The generic metric sub-tlv.";
    }
    description
      "The grouping for generic metric sub-tlv.";
  }

  grouping faemb-sub-tlv {
    container faemb-sub-tlv {
      leaf min-bandwidth {
        type rt-types:bandwidth-ieee-float32;
        description
          "A 32-bit field specifying the link bandwidth in IEEE
           floating point format (IEEE754). The units are
           bytes-per-second.";
      }
      description
        "Flex-algo Exclude Minimum Bandwidth sub-tlv (FAEMB).";
    }
    description
      "Grouping for FAEMB sub-tlv.";
  }

  grouping faemd-sub-tlv {
    container faemd-sub-tlv {
      leaf max-link-delay {
        type rt-types:uint24;
        description
          "A 24-bit field specifying the maximum link delay in
           microseconds.";
      }
      description
        "The Flex-algo Exclude Maximum Delay sub-tlv (FAEMD).";
    }
    description
      "Grouping for FAEMD sub-tlv.";
  }

  grouping fadrb-sub-tlv {
    container fadrb-sub-tlv {
      leaf-list fadrb-flags {
        type identityref {
          base fadrb-flags;
        }
        description
          "Flex-algo definition reference bandwidth sub-tlv
           flags list.";
      }
      leaf reference-bandwidth {
        type rt-types:bandwidth-ieee-float32;
        description
          "A 32-bit field specifying the link bandwidth in IEEE
           floating point format (IEEE754). The units are
           bytes-per-second.";
      }
      leaf granularity-bandwidth {
        type rt-types:bandwidth-ieee-float32;
        description
          "A 32-bit field specifying the link bandwidth in IEEE
           floating point format (IEEE754). The units are
           bytes-per-second.";
      }
      description
        "The Flex-algo Reference Bandwidth sub-tlv (FAEMD).";
    }
    description
      "Grouping for FADRB sub-tlv.";
  }

  grouping fadbt-sub-tlv {
    container fadbt-sub-tlv {
      leaf-list fadbt-flags {
        type identityref {
          base fadbt-flags;
        }
        description
          "Flex-algo definition bandwidth thresholds sub-tlv
           flags list.";
      }
      list bandwidth-threshold {
        leaf bandwidth-threshold {
          type rt-types:bandwidth-ieee-float32;
          description
            "Maximum link bandwidth. A 32-bit field specifying the
             link bandwidth in IEEE floating point format (IEEE754).
             The units are bytes-per-second.";
        }

        leaf threshold-metric {
          type uint32;
          description
            "Metric value range 1 - 4,294,967,296 (0xFFFFFFFF).";
        }
        description
          "List of bandwidth thresholds and metrics.";
      }
      description
        "The Flex-algo Bandwidth Thresholds sub-tlv (FADBT).";
    }
    description
      "Grouping for FADBT sub-tlv.";
  }

  /* Configurations */
  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/ospf:ospf/"
        + "ospf:areas/ospf:area/ospf:interfaces/ospf:interface" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospf')" {
      description
        "This augments the OSPF interface configuration
         when used.";
    }
    description
      "This augments the OSPF protocol interface
       configuration with generic metric configuration.";

    container generic-metrics {
      list generic-metric {
        key "metric-type";
        leaf metric-type {
          type identityref {
            base ospf-flex-algo:metric-type;
          }
          description
            "Type of metric to be used during the calculation.";
        }
        leaf metric-value {
          type uint32;
          description
            "Metric value, range is from 0 to 0xFFFFFFFF.";
        }
        description
          "Interface generic metric configuration per metric-type.";
      }
      description
        "Interface generic metric configuration.";
    }
  }

  augment "/rt:routing/rt:control-plane-protocols/"
     + "rt:control-plane-protocol/ospf:ospf/"
     + "ospf-flex-algo:ospf-flex-algo/ospf-flex-algo:flex-algo" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospf')" {
      description
        "This augments the OSPF routing protocol when used.";
    }
    description
      "This augments OSPF protocol Flexible Algorithm with
       bandwidth constraints.";

    uses bandwidth-constraint;

    choice metric-derivation-method {
      description
        "Choice of automatic metric derivation methods.";
      container reference-bandwidth {
        description
          "Metric is inversely proportional to the link
           bandwidth.";
        leaf reference-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "A 32-bit field specifying the link bandwidth in IEEE
             floating point format (IEEE754). The units are
             bytes-per-second.";
        }
        leaf granularity-bandwidth {
          type rt-types:bandwidth-ieee-float32;
          description
            "A 32-bit field specifying the link bandwidth in IEEE
             floating point format (IEEE754). The units are
             bytes-per-second.";
        }
      }
      container bandwidth-thresholds {
        description
          "Pre-define non-proportional metric values from the varying
           ranges of link bandwidth.";
        list bandwidth-threshold {
          key bandwidth-threshold;
          leaf bandwidth-threshold {
            type rt-types:bandwidth-ieee-float32;
            description
              "Maximum link bandwidth. A 32-bit field specifying the
               link bandwidth in IEEE floating point format (IEEE754).
               The units are bytes-per-second.";
          }
          leaf threshold-metric {
            type uint32;
            description
              "Metric value range 1 - 4,294,967,296 (0xFFFFFFFF).";
          }
          description
            "List of bandwidth thresholds and metrics.";
        }
      }
    }

    leaf exclude-min-bw {
      type rt-types:bandwidth-ieee-float32;
      description
        "A 32-bit field specifying the link bandwidth in IEEE
         floating point format (IEEE754). The units are
         bytes-per-second.";
    }

    leaf exclude-max-delay {
      type rt-types:uint24;
      description
        "A 24-bit field specifying the maximum link delay in
         microseconds.";
    }
  }

  /* 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/ospf:te-opaque/"
        + "ospf:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }

    description
      "TE link TLV of OSPF TE LSA.";

    uses generic-metric-sub-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/"
        + "ospf-inter-as-te:inter-as-te-v2/"
        + "ospf-inter-as-te:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }
    description
      "Area scope TE link TLV of OSPFv2 Inter-AS-TE-v2 LSA.";

    uses generic-metric-sub-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/"
        + "ospf-inter-as-te:inter-as-te-v2/"
        + "ospf-inter-as-te:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augment OSPFv2 routing protocol when used";
    }
    description
      "AS scope TE link TLV of OSPFv2 Inter-AS-TE-v2 LSA.";

    uses generic-metric-sub-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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf-te:ospfv3-intra-area-te/"
        + "ospf-te:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "TE Link TLV of OSPFv3 Intra-Area-TE-LSA.";

    uses generic-metric-sub-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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf-inter-as-te:inter-as-te-v3/"
        + "ospf-inter-as-te:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "Area scope TE Link TLV of OSPFv3 Inter-AS-TE-v3 LSA.";

    uses generic-metric-sub-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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf-inter-as-te:inter-as-te-v3/"
        + "ospf-inter-as-te:link-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "AS scope TE Link TLV of OSPFv3 Inter-AS-TE-v3 LSA.";

    uses generic-metric-sub-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/"
        + "ospf:extended-link-opaque/ospf:extended-link-tlv/"
        + "ospf-link-attr:app-specific-link-attr-sub-tlvs" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }
    description
      "OSPF Application-Specific Link Attributes (ASLA) sub-TLV is
       a sub-TLV of OSPFv2 Extended Link TLV (RFC7684).";

    uses generic-metric-sub-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:ospfv3/"
       + "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router/"
       + "ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv/"
       + "ospf-link-attr:app-specific-link-attr-sub-tlvs" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
         description
           "This augmentation is only valid for OSPFv3
            E-Router LSAs";
       }
    description
      "Application-Specific Link Attributes (ASLA) sub-TLV (RFC9492)
       of the OSPFv3 Router-Link TLV (RFC8362).";

    uses generic-metric-sub-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/"
        + "ospf:extended-link-opaque/ospf:extended-link-tlv/"
        + "ospf-l2-bundle:l2-bdl-mbr-attr/"
        + "ospf-l2-bundle:l2-bdl-mbrs" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }
    description
      "OSPFv2 L2 Bundle Member Attributes sub-TLV is
       a sub-TLV of OSPFv2 Extended Link TLV (RFC7684).";

    uses generic-metric-sub-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:ospfv3/"
       + "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-router/"
       + "ospfv3-e-lsa:e-router-tlvs/ospfv3-e-lsa:link-tlv/"
       + "ospf-l2-bundle:l2-bdl-mbr-attr/"
       + "ospf-l2-bundle:l2-bdl-mbrs" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
         description
           "This augmentation is only valid for OSPFv3
            E-Router LSAs";
       }
    description
      "OSPFv3 L2 Bundle Member Attributes sub-TLV in
       OSPFv3 Area scope router-link TLV.";

    uses generic-metric-sub-tlv;

  }

  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:ri-opaque/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }

    description
      "Flex-algo definition TLVs for OSPFv2 type 9 opaque RI LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-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/ospf:ri-opaque/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }

    description
      "Flex-algo definition TLVs for OSPFv2 type 10 opaque RI LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-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/ospf:ri-opaque/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv2')" {
      description
        "This augmentation is only valid for OSPFv2.";
    }
    description
      "Flex-algo definition TLVs for OSPFv2 type 11 opaque RI LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-tlv;
  }

  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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf:router-information/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }

    description
      "Flex-algo definition TLVs for OSPFv3 Router
       Information (RI) LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf:router-information/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }

    description
      "Flex-algo definition TLVs for OSPFv3 Router
       Information (RI) LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-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:ospfv3/"
        + "ospf:ospfv3/ospf:body/ospf:router-information/"
        + "ospf-flex-algo:fad-tlvs/ospf-flex-algo:fad-tlv" {
    when "derived-from(/rt:routing/rt:control-plane-protocols/"
         + "rt:control-plane-protocol/rt:type, 'ospf:ospfv3')" {
      description
        "This augmentation is only valid for OSPFv3.";
    }
    description
      "Flex-algo definition TLVs for OSPFv3 Router Information LSA.";

    uses faemb-sub-tlv;
    uses faemd-sub-tlv;
    uses fadrb-sub-tlv;
    uses fadbt-sub-tlv;
  }
}

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-te
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-inter-as-te
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-two-metric
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-grace-linkdown
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-lls-localid
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-msd
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-l2-bundle
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-link-attr
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   URI: urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo-bw-con
   Registrant Contact: The IESG.
   XML: N/A, the requested URI is an XML namespace.

   name: ietf-ospf-te
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-te
   prefix: ospf-te
   reference: RFC XXXX

   name: ietf-ospf-inter-as-te
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-inter-as-te
   prefix: ospf-inter-as-te
   reference: RFC XXXX

   name: ietf-ospf-two-metric
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-two-metric
   prefix: ospf-two-metric
   reference: RFC XXXX

   name: ietf-ospf-grace-linkdown
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-grace-linkdown
   prefix: ospf-grace-linkdown
   reference: RFC XXXX

   name: ietf-ospf-lls-localid
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-lls-localid
   prefix: ospf-lls-localid
   reference: RFC XXXX

   name: ietf-ospf-msd
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-msd
   prefix: ospf-msd
   reference: RFC XXXX

   name: ietf-ospf-l2-bundle
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-l2-bundle
   prefix: ospf-l2-bundle
   reference: RFC XXXX

   name: ietf-ospf-link-attr
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-link-attr
   prefix: ospf-link-attr
   reference: RFC XXXX

   name: ietf-ospf-flex-algo
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo
   prefix: ospf-flex-algo
   reference: RFC XXXX

   name: ietf-ospf-flex-algo-bw-con
   namespace: urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo-bw-con
   prefix: ospf-flex-algo-bw-con
   reference: RFC XXXX