A YANG Data Model for RSVP-TE Protocol

Model Overview The RSVP-TE generic model augments the RSVP base and extended YANG models defined in . It also augments the TE tunnels and interfaces module defined in to cover parameters specific to the configuration and management of RSVP-TE interfaces, tunnels and LSP(s). The RSVP-TE MPLS YANG model augments the RSVP-TE generic model with parameters to configure and manage signaling of MPLS RSVP-TE LSPs. RSVP-TE model augmentation for other dataplane technologies (e.g. OTN or WDM) are outside the scope of this document. There are three types of configuration and state data nodes in module(s) defined in this document: those augmenting or extending the base RSVP module that is defined in those augmenting or extending the base TE module defined in those that are specific to the RSVP-TE and RSVP-TE MPLS modules defined in this document.

Module Relationship The data pertaining to RSVP-TE in this document is divided into two modules: a technology agnostic RSVP-TE module that holds generic parameters for RSVP-TE applicable to all technologies, and a MPLS technology specific RSVP-TE module that holds parameters specific to MPLS technology. The relationship between the different modules is shown in .

Model Tree Diagrams A full tree diagram of the module(s) defined in this document as per the syntax defined in are given in subsequent sections.

RSVP-TE Model Tree Diagram shows the YANG tree diagram of the RSVP-TE generic YANG model defined in module ietf-rsvp-te.yang.

RSVP-TE MPLS Model Tree Diagram shows the YANG tree diagram of the RSVP-TE MPLS YANG model defined in module ietf-rsvp-te-mpls.yang and that augments RSVP-TE module as well as RSVP and TE YANG modules.

/te:te/tunnels/tunnel/name +--:(auto-tunnel) +--rw auto-tunnel-backups +--rw auto-backup-protection? identityref +--rw auto-backup-path-computation? identityref ]]>

YANG Modules

RSVP-TE YANG Module The RSVP-TE generic YANG module "ietf-rsvp-te" imports the following modules: ietf-rsvp defined in ietf-routing-types defined in ietf-te-types defined in ietf-te and ietf-te-dev defined in This module references the following documents: , , , , , , , , .

file "ietf-rsvp-te@2026-01-19.yang" module ietf-rsvp-te { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-rsvp-te"; prefix rsvp-te; import ietf-rsvp { prefix rsvp; reference "draft-ietf-teas-yang-rsvp: A YANG Data Model for Resource Reservation Protocol (RSVP)"; } import ietf-routing { prefix rt; reference "RFC8349: A YANG Data Model for Routing Management"; } import ietf-routing-types { prefix rt-types; reference "RFC8294: Common YANG Data Types for the Routing Area"; } import ietf-te { prefix te; reference "draft-ietf-teas-yang-te: A YANG Data Model for Traffic Engineering Tunnels and Interfaces"; } import ietf-te-device { prefix te-dev; reference "draft-ietf-teas-yang-te: A YANG Data Model for Traffic Engineering Tunnels and Interfaces"; } /* Import TE generic types */ import ietf-te-types { prefix te-types; reference "RFC8776: Common YANG Data Types for Traffic Engineering."; } import ietf-inet-types { prefix inet; reference "RFC6991: Common YANG Data Types"; } organization "IETF Traffic Engineering Architecture and Signaling (TEAS) Working Group"; contact "WG Web: WG List: Editor: Vishnu Pavan Beeram Editor: Tarek Saad Editor: Rakesh Gandhi Editor: Xufeng Liu Editor: Igor Bryskin Editor: Himanshu Shah "; description "This module contains the RSVP-TE YANG generic data model. The model fully conforms to the Network Management Datastore Architecture (NMDA). Copyright (c) 2018 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX; see the RFC itself for full legal notices."; // RFC Ed.: replace XXXX with actual RFC number and remove this // note. // RFC Ed.: update the date below with the date of RFC publication // and remove this note. revision 2026-01-19 { description "A YANG Data Model for RSVP-TE"; reference "RFCXXXX: A YANG Data Model for RSVP-TE Protocol"; } identity rsvp-message-type { description "RSVP message types"; } identity rsvp-message-path { base rsvp-message-type; description "RSVP Path message"; reference "RFC2205"; } identity rsvp-message-resv { base rsvp-message-type; description "RSVP Resv message"; reference "RFC2205"; } identity rsvp-message-path-err { base rsvp-message-type; description "RSVP Path-Err message"; reference "RFC2205"; } identity rsvp-message-resv-err { base rsvp-message-type; description "RSVP Resv-Err message"; reference "RFC2205"; } identity rsvp-message-path-tear { base rsvp-message-type; description "RSVP Path Tear message"; reference "RFC2205"; } identity rsvp-message-resv-conf { base rsvp-message-type; description "RSVP Resv Confirm message"; reference "RFC2205"; } identity rsvp-message-srefresh { base rsvp-message-type; description "RSVP SRefresh message"; reference "RFC2961"; } identity rsvp-message-hello { base rsvp-message-type; description "RSVP Hello message"; reference "RFC3209"; } identity rsvp-message-bundle { base rsvp-message-type; description "RSVP Bundle message"; reference "RFC2961"; } identity rsvp-message-notify { base rsvp-message-type; description "RSVP Notify message"; reference "RFC3473"; } /** * RSVP-TE LSPs groupings. */ grouping lsp-record-route-information-state { description "recorded route information grouping"; container incoming-record-route-subobjects { description "RSVP recorded route object incoming information"; list incoming-record-route-subobject { when "../../te:origin-type != 'ingress'" { description "Applicable on non-ingress LSPs only"; } key "index"; ordered-by user; description "List of RSVP Path record-route objects"; uses te-types:record-route-state; } } container outgoing-record-route-subobjects { description "RSVP recorded route object outgoing information"; list outgoing-record-route-subobject { when "../../te:origin-type != 'egress'" { description "Applicable on non-egress LSPs only"; } key "index"; ordered-by user; description "List of RSVP Resv record-route objects"; uses te-types:record-route-state; } } } grouping lsp-explicit-route-information-state { description "RSVP-TE LSP explicit-route information"; container explicit-route-objects { description "Explicit route object information"; list incoming-explicit-route-hop { when "../../te:origin-type != 'ingress'" { description "Applicable on non-ingress LSPs only"; } key "index"; ordered-by user; description "List of incoming RSVP Path explicit-route objects"; leaf index { type uint32; description "Explicit route hop index. The index is used to identify an entry in the list. The order of entries is defined by the user without relying on key values"; } uses te-types:explicit-route-hop; } list outgoing-explicit-route-hop { when "../../te:origin-type != 'egress'" { description "Applicable on non-egress LSPs only"; } key "index"; ordered-by user; description "List of outgoing RSVP Path explicit-route objects"; leaf index { type uint32; description "Explicit route hop index. The index is used to identify an entry in the list. The order of entries is defined by the user without relying on key values"; } uses te-types:explicit-route-hop; } } } grouping lsp-attributes-flags { description "Configuration parameters relating to RSVP-TE LSP attribute flags"; leaf-list lsp-attribute { type identityref { base te-types:lsp-attributes-flags; } description "RSVP per LSP attributes flags"; reference "RFC4920, RFC5420, RFC7570"; } } grouping lsp-session-attributes-obj-flags { description "Configuration parameters relating to RSVP-TE LSP session attribute flags"; reference "RFC4859: Registry for RSVP-TE Session Flags"; leaf-list session-attribute { type identityref { base te-types:session-attributes-flags; } description "RSVP session attributes flags"; reference "RFC4859: Registry for RSVP-TE Session Flags"; } } grouping lsp-properties { description "Configuration parameters relating to RSVP-TE LSP session attribute flags"; leaf lsp-signaled-name { type string; description "Sets the session name to use in the session attribute object."; } uses lsp-session-attributes-obj-flags; uses lsp-attributes-flags; } grouping tunnel-properties { description "RSVP-TE Tunnel properties grouping"; leaf retry-timer { type uint16 { range "1..600"; } units "seconds"; description "sets the time between attempts to establish the LSP"; } } /*** End of RSVP-TE LSP groupings ***/ /** * RSVP-TE generic global properties. */ grouping global-soft-preemption { description "Configuration for global RSVP-TE soft preemption"; container global-soft-preemption { presence "Enables soft preemption on a node."; description "Top level container for RSVP-TE soft-preemption"; leaf soft-preemption-timeout { type uint16 { range "0..300"; } units "seconds"; default "0"; description "Timeout value for soft preemption to revert to hard preemption"; } } } /*** End of RSVP-TE generic global properties. ***/ /** * RSVP-TE interface generic groupings. */ grouping rsvp-te-interface-attributes { description "Top level grouping for RSVP-TE interface properties."; container rsvp-te-interface-attributes { description "Top level container for RSVP-TE interface properties"; } } /*** End of RSVP-TE generic groupings ***/ /* RSVP-TE global properties */ augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp" { description "RSVP-TE augmentation to RSVP globals"; uses global-soft-preemption; } /* Linkage to the base RSVP all links */ augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/rsvp:interfaces" { description "RSVP-TE generic data augmentation pertaining to interfaces"; uses rsvp-te-interface-attributes; } /* Linkage to per RSVP interface */ augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/rsvp:interfaces/" + "rsvp:interface" { description "RSVP-TE generic data augmentation pertaining to specific interface"; uses rsvp-te-interface-attributes; } /* add augmentation for sessions and neighbors */ augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/" + "rsvp:sessions" { description "RSVP-TE generic data augmentation pertaining to session"; list session-te { key "tunnel-endpoint tunnel-id extended-tunnel-id"; config false; description "List of RSVP sessions"; leaf tunnel-endpoint { type inet:ip-address; description "RFC3209"; } leaf tunnel-id { type uint16; description "RFC3209"; } leaf extended-tunnel-id { type inet:ip-address; description "RFC3209"; } /* uses rsvp:session-attributes; */ container psbs { description "Path State Block (PSB) container."; list psb { description "List of Path State Blocks."; } } container rsbs { description "Reservation State Block (RSB) container."; list rsb { description "List of Reservation State Blocks."; } } } } augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/" + "rsvp:sessions/session-te/psbs/psb" { description "RSVP-TE generic data augmentation pertaining to session"; /* To be added */ leaf tspec-average-rate { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Tspec Token Bucket Average Rate"; reference "RFC2210: RSVP with INTSERV"; } leaf tspec-size { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Tspec Token Bucket Burst Rate"; reference "RFC2210"; } leaf tspec-peak-rate { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Tspec Token Bucket Peak Data Rate"; reference "RFC2210"; } leaf min-policed-unit { type uint32; description "Tspec Minimum Policed Unit"; reference "RFC2210"; } leaf max-packet-size { type uint32; description "Tspec Maximum Packet Size"; reference "RFC2210"; } } augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/" + "rsvp:sessions/session-te/rsbs/rsb" { description "RSVP-TE generic data augmentation pertaining to session"; leaf fspec-average-rate { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Fspec Token Bucket Average Rate"; reference "RFC2210"; } leaf fspec-size { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Fspec Token Bucket Burst Rate"; reference "RFC2210"; } leaf fspec-peak-rate { type rt-types:bandwidth-ieee-float32; units "Bytes per second"; description "Fspec Token Bucket Peak Data Rate"; reference "RFC2210"; } leaf min-policed-unit { type uint32; description "Fspec Minimum Policed Unit"; reference "RFC2210"; } leaf max-packet-size { type uint32; description "Fspec Maximum Packet Size"; reference "RFC2210"; } } augment "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/rsvp:neighbors" { description "RSVP-TE generic data augmentation pertaining to neighbors"; /* To be added */ } /** * RSVP-TE generic augmentations of generic TE model. */ /* TE tunnel augmentation */ augment "/te:te/te:tunnels/te:tunnel" { when "/te:te/te:tunnels/te:tunnel" + "/te:primary-paths/te:primary-path" + "/te:signaling-type = 'te-types:path-setup-rsvp'" { description "When the path signaling protocol is RSVP-TE "; } description "RSVP-TE generic data augmentation pertaining to TE tunnels"; uses lsp-properties; uses tunnel-properties; } /* TE LSP augmentation */ grouping rsvp-te-lsp-error-info { description "Grouping for RSVP-TE error reporting information"; leaf rsvp-message-type { type identityref { base rsvp-message-type; } description "The RSVP message type that delivered the error"; } leaf rsvp-error-code { type uint8; description "RSVP error code"; reference "RFC2205"; } leaf rsvp-error-subcode { type uint16; description "RSVP Error sub-codes"; reference "RFC2205"; } } augment "/te:te/te:lsps/te:lsp" { when "/te:te/te:lsps/te:lsp" + "/te:signaling-type = 'te-types:path-setup-rsvp'" { description "When the signaling protocol is RSVP-TE "; } description "RSVP-TE generic data augmentation pertaining to specific TE LSP"; leaf associated-rsvp-session { type leafref { path "/rt:routing/rt:control-plane-protocols/" + "rt:control-plane-protocol/rsvp:rsvp/" + "rsvp:sessions/session-te/tunnel-id"; } config false; description "If the signalling protocol specified for this path is RSVP-TE, this leaf provides a reference to the associated session within the RSVP-TE protocol sessions list, such that details of the signaling can be retrieved."; } uses lsp-properties; uses rsvp-te-lsp-error-info; uses lsp-explicit-route-information-state; uses lsp-record-route-information-state; } /* TE interface augmentation */ augment "/te:te/te-dev:interfaces/te-dev:interface" { description "RSVP-TE generic data augmentation pertaining to specific TE interface"; } }

]]>


RSVP-TE MPLS YANG Module

The RSVP-TE MPLS YANG module "ietf-rsvp-te-mpls" imports the following module(s):


  ietf-rsvp defined in 
  ietf-routing-types defined in 
  ietf-te-mpls-types defined in 
  ietf-te and ietf-te-dev defined in 


This module references the following documents:
, , ,
, .

 file "ietf-rsvp-te-mpls@2026-01-19.yang"
module ietf-rsvp-te-mpls {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-rsvp-te-mpls";
  prefix rsvp-te-mpls;

  import ietf-rsvp {
    prefix rsvp;
    reference
      "draft-ietf-teas-yang-rsvp: A YANG Data Model for
       Resource Reservation Protocol (RSVP)";
  }
  import ietf-routing {
    prefix rt;
    reference
      "RFC8349: A YANG Data Model for Routing Management";
  }
  import ietf-te-packet-types {
    prefix te-packet-types;
    reference
      "RFC8776: Common YANG Data Types for Traffic Engineering.";
  }
  import ietf-te-types {
    prefix te-types;
    reference
      "RFC8776: Common YANG Data Types for Traffic Engineering.";
  }
  import ietf-te {
    prefix te;
    reference
      "draft-ietf-teas-yang-te: A YANG Data Model for Traffic
       Engineering Tunnels and Interfaces";
  }
  import ietf-te-device {
    prefix te-dev;
    reference
      "draft-ietf-teas-yang-te: A YANG Data Model for Traffic
       Engineering Tunnels and Interfaces";
  }

  organization
    "IETF Traffic Engineering Architecture and Signaling (TEAS)
     Working Group";
  contact
    "WG Web:   
     WG List:  

     Editor:   Vishnu Pavan Beeram
               

     Editor:   Tarek Saad
               

     Editor:   Rakesh Gandhi
               

     Editor:   Xufeng Liu
               

     Editor:   Igor Bryskin
               

     Editor:   Himanshu Shah
               ";
  description
    "Latest update to MPLS RSVP-TE YANG data model.
     The model fully conforms to the Network Management Datastore
     Architecture (NMDA).

     Copyright (c) 2018 IETF Trust and the persons
     identified as authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject
     to the license terms contained in, the Simplified BSD License
     set forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).
     This version of this YANG module is part of RFC XXXX; see
     the RFC itself for full legal notices.";

  // RFC Ed.: replace XXXX with actual RFC number and remove this
  // note.
  // RFC Ed.: update the date below with the date of RFC publication
  // and remove this note.

  revision 2026-01-19 {
    description
      "Update to MPLS RSVP-TE YANG initial revision.";
    reference
      "RFCXXXX: A YANG Data Model for RSVP-TE Protocol";
  }

  /* RSVP-TE MPLS LSPs groupings */

  grouping lsp-attributes-flags-mpls {
    description
      "Configuration parameters relating to RSVP-TE MPLS LSP
       attribute flags";
  }

  grouping lsp-session-attributes-obj-flags-mpls {
    description
      "Configuration parameters relating to RSVP-TE MPLS LSP
       session attribute flags";
    reference
      "RFC4859: Registry for RSVP-TE Session Flags";
    leaf-list session-attribute {
      type identityref {
        base te-types:session-attributes-flags;
      }
      description
        "RSVP session attributes flags";
      reference
        "RFC4859: Registry for RSVP-TE Session Flags";
    }
  }

  grouping tunnel-properties-mpls {
    description
      "Top level grouping for LSP properties.";
    uses lsp-session-attributes-obj-flags-mpls;
    uses lsp-attributes-flags-mpls;
  }

  grouping lsp-properties-mpls {
    description
      "Top level grouping for LSP properties.";
    uses lsp-session-attributes-obj-flags-mpls;
    uses lsp-attributes-flags-mpls;
  }

  /* End of RSVP-TE MPLS LSPs groupings */
  /* MPLS RSVP-TE interface groupings */

  grouping rsvp-te-interface-state {
    description
      "The RSVP-TE interface state grouping";
    leaf over-subscribed-bandwidth {
      type te-packet-types:bandwidth-kbps;
      description
        "The amount of over-subscribed bandwidth on
         the interface";
    }
  }

  grouping rsvp-te-interface-softpreemption-state {
    description
      "The RSVP-TE interface preeemptions state grouping";
    container interface-softpreemption-state {
      description
        "The RSVP-TE interface preeemptions state grouping";
      leaf soft-preempted-bandwidth {
        type te-packet-types:bandwidth-kbps;
        description
          "The amount of soft-preempted bandwidth on
           this interface";
      }
      list lsps {
        key "source destination tunnel-id lsp-id "
          + "extended-tunnel-id";
        description
          "List of LSPs that are soft-preempted";
        leaf source {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:source";
          }
          description
            "Tunnel sender address extracted from
             SENDER_TEMPLATE  object";
          reference
            "RFC3209";
        }
        leaf destination {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:destination";
          }
          description
            "Tunnel endpoint address extracted from
             SESSION object";
          reference
            "RFC3209";
        }
        leaf tunnel-id {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:tunnel-id";
          }
          description
            "Tunnel identifier used in the SESSION
             that remains constant over the life
             of the tunnel.";
          reference
            "RFC3209";
        }
        leaf lsp-id {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:lsp-id";
          }
          description
            "Identifier used in the SENDER_TEMPLATE
             and the FILTER_SPEC that can be changed
             to allow a sender to share resources with
             itself.";
          reference
            "RFC3209";
        }
        leaf extended-tunnel-id {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:extended-tunnel-id";
          }
          description
            "Extended Tunnel ID of the LSP.";
          reference
            "RFC3209";
        }
        leaf type {
          type leafref {
            path "/te:te/te:lsps/te:lsp/"
               + "te:type";
          }
          description
            "LSP type P2P or P2MP";
        }
      }
    }
  }

  grouping bandwidth-mpls-constraints {
    description
      "Bandwidth constraints.";
    container bandwidth-mpls-constraints {
      description
        "Holds the bandwidth constraints properties";
      leaf maximum-reservable {
        type te-packet-types:bandwidth-kbps;
        description
          "The maximum reservable bandwidth on the
           interface in kbps";
      }
      leaf-list bc-value {
        type uint32 {
          range "0..4294967295";
        }
        max-elements 8;
        description
          "The bandwidth constraint type";
      }
    }
  }

  grouping bandwidth-constraint-values {
    description
      "Packet bandwidth contraints values";
    choice value-type {
      description
        "Value representation";
      case percentages {
        container perc-values {
          uses bandwidth-mpls-constraints;
          description
            "Percentage values";
        }
      }
      case absolutes {
        container abs-values {
          uses bandwidth-mpls-constraints;
          description
            "Absolute values";
        }
      }
    }
  }

  grouping bandwidth-mpls-reservable {
    description
      "Interface bandwidth reservable configuration grouping";
    container bandwidth-mpls-reservable {
      description
        "Interface bandwidth reservable container";
      choice bandwidth-value {
        description
          "Reservable bandwidth configuration choice";
        case absolute {
          leaf absolute-value {
            type te-packet-types:bandwidth-kbps;
            description
              "Absolute value of the bandwidth";
          }
        }
        case percentage {
          leaf percent-value {
            type uint32 {
              range "0..4294967295";
            }
            description
              "Percentage reservable bandwidth";
          }
          description
            "The maximum reservable bandwidth on the
             interface";
        }
      }
      choice bc-model-type {
        description
          "Reservable bandwidth percentage capacity
           values.";
        case bc-model-rdm {
          container bc-model-rdm {
            description
              "Russian Doll Model Bandwidth Constraints.";
            uses bandwidth-mpls-constraints;
          }
        }
        case bc-model-mam {
          container bc-model-mam {
            uses bandwidth-mpls-constraints;
            description
              "Maximum Allocation Model Bandwidth
               Constraints.";
          }
        }
        case bc-model-mar {
          container bc-model-mar {
            uses bandwidth-mpls-constraints;
            description
              "Maximum Allocation with Reservation Model
               Bandwidth Constraints.";
          }
        }
      }
    }
  }

  /* End of RSVP-TE interface groupings */
  /* RSVP-TE FRR groupings */

  grouping rsvp-te-frr-auto-tunnel-backup {
    description
      "Auto-tunnel backup configuration grouping";
    leaf auto-backup-protection {
      type identityref {
        base te-packet-types:backup-protection-type;
      }
      default "te-packet-types:backup-protection-node-link";
      description
        "Describes whether the backup should offer
         protection against link, node, or either";
    }
    leaf auto-backup-path-computation {
      type identityref {
        base te-types:path-computation-srlg-type;
      }
      description
        "FRR backup computation type";
    }
  }

  grouping rsvp-te-frr-backups {
    description
      "Top level container for RSVP-TE FRR backup parameters";
    container rsvp-te-frr-backups {
      description
        "RSVP-TE facility backup properties";
        choice type {
          description
            "FRR backup tunnel type";
          case static-tunnel {
            container static-backups {
              description
                "List of static backups";
              list static-backup {
                key "backup-tunnel-name";
                description
                  "List of static backup tunnels that
                   protect the RSVP-TE interface.";
                leaf backup-tunnel-name {
                  type leafref {
                    path "/te:te/te:tunnels/te:tunnel/te:name";
                  }
                  description
                    "FRR Backup tunnel name";
                }
              }
            }
          }
          case auto-tunnel {
            container auto-tunnel-backups {
              description
                "Auto-tunnel choice";
              uses rsvp-te-frr-auto-tunnel-backup;
            }
          }
        }
    }
  }

  grouping lsp-backup-info-state {
    description
      "LSP backup information grouping";
    leaf backup-tunnel-name {
      type string;
      description
        "If an LSP has an FRR backup LSP that can protect it,
         this field identifies the tunnel name of the backup LSP.
         Otherwise, this field is empty.";
    }
    leaf backup-frr-on {
      type uint8;
      description
        "Whether currently this backup is carrying traffic";
    }
    leaf backup-protected-lsp-num {
      type uint32;
      description
        "Number of LSPs protected by this backup";
    }
  }

  grouping lsp-backup-info {
    description
      "Backup/bypass LSP related information";
    container backup-info {
      description
        "backup information";
      uses lsp-backup-info-state;
    }
  }

  /*** End of RSVP-TE FRR backup information ***/

  /* RSVP-TE global properties */

  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/rsvp:rsvp" {
    description
      "RSVP-TE augmentation to RSVP globals";
    leaf rsvp-frr-local-revert-delay {
      type uint32;
      description
        "Time to wait after primary link is restored
         before node attempts local revertive
         procedures.";
    }
  }

  /* Linkage to the base RSVP all interfaces */

  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/rsvp:rsvp/rsvp:interfaces" {
    description
      "Augmentations for RSVP-TE MPLS all interfaces properties";
    /* To be added */
  }

  /* Linkage to per RSVP interface */

  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/rsvp:rsvp/rsvp:interfaces/"
        + "rsvp:interface" {
    description
      "Augmentations for RSVP-TE MPLS per interface properties";
    /* To be added */
  }

  /* add augmentation for sessions neighbors */

  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/rsvp:rsvp/"
        + "rsvp:sessions" {
    description
      "Augmentation for RSVP-TE MPLS sessions";
    /* To be added */
  }

  augment "/rt:routing/rt:control-plane-protocols/"
        + "rt:control-plane-protocol/rsvp:rsvp/rsvp:neighbors" {
    description
      "Augmentations for RSVP-TE MPLS neighbors properties";
    /* To be added */
  }

  /**
   * Augmentation to TE generic module
   */

  augment "/te:te/te:tunnels/te:tunnel" {
    description
      "Augmentations for RSVP-TE MPLS TE tunnel properties";
    uses tunnel-properties-mpls;
  }

  augment "/te:te/te:lsps/te:lsp" {
    when "/te:te/te:lsps/te:lsp"
       + "/te:signaling-type = 'te-types:path-setup-rsvp'" {
      description
        "When the signaling protocol is RSVP-TE ";
    }
    description
      "RSP-TE MPLS LSP state properties";
    uses lsp-properties-mpls;
    uses lsp-backup-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/te:primary-paths"
        + "/te:primary-path/te:lsps/te:lsp" {
    when "/te:te/te:tunnels/te:tunnel"
       + "/te:secondary-paths/te:secondary-path/"
       + "te:signaling-type = 'te-types:path-setup-rsvp'" {
      description
        "When the signaling protocol is RSVP-TE ";
    }
    description
      "RSVP-TE MPLS LSP state properties";
    uses lsp-properties-mpls;
    uses lsp-backup-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/te:secondary-paths"
        + "/te:secondary-path/te:lsps/te:lsp" {
    when "/te:te/te:tunnels/te:tunnel"
       + "/te:secondary-paths/te:secondary-path/"
       + "te:signaling-type = 'te-types:path-setup-rsvp'" {
      description
        "When the signaling protocol is RSVP-TE ";
    }
    description
      "RSVP-TE MPLS LSP state properties";
    uses lsp-properties-mpls;
    uses lsp-backup-info;
  }

  augment "/te:te/te-dev:interfaces/te-dev:interface" {
    description
      "RSVP reservable bandwidth configuration properties";
    uses bandwidth-mpls-reservable;
  }

  augment "/te:te/te-dev:interfaces/te-dev:interface" {
    description
      "RSVP reservable bandwidth configuration properties";
    uses rsvp-te-frr-backups;
  }
}

]]>