submodule Cisco-IOS-XR-ip-bfd-oper-sub1 {

    yang-version 1;

    belongs-to Cisco-IOS-XR-ip-bfd-oper {
        prefix Cisco-IOS-XR-ip-bfd-oper;
    }

    import ietf-inet-types {
      prefix inet;
    }
    import Cisco-IOS-XR-types {
      prefix xr;
    }
    import cisco-semver {
      prefix semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service
     
     Postal: 170 West Tasman Drive
     San Jose, CA 95134
     
     Tel: +1 800 553-NETS
     
     E-mail: cs-yang@cisco.com";

    description
      "This submodule contains a collection of YANG definitions
     for Cisco IOS-XR ip-bfd package operational data.
     
     Copyright (c) 2013-2020 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2020-05-20" {
      description
        "Added XML Support for IPv4 and IPv6SingleHopMultiPathTable via CSCvu15981.";
    }

    revision "2019-10-03" {
      description
        "Addressed openconfig-bfd model open issues via CSCvp68925.Revision updated now.";
    }

    revision "2019-04-05" {
      description
        "Establish semantic version baseline.";
    }

    revision "2017-09-07" {
      description
        "Fixed type translation error.";
    }

    revision "2015-11-09" {
      description "IOS XR 6.0 revision.";
    }

    semver:module-version "2.0.0";
    semver:module-version "1.1.0";
    semver:module-version "1.0.0";

    typedef Bfd-mp-download-state {
      type enumeration {
        enum "bfd-mp-download-none" {
          value 0;
          description "bfd mp download none";
        }
        enum "bfd-mp-download-no-lc" {
          value 1;
          description
            "bfd mp download no lc";
        }
        enum "bfd-mp-download-downloaded" {
          value 2;
          description
            "bfd mp download downloaded";
        }
        enum "bfd-mp-download-ack" {
          value 3;
          description "bfd mp download ack";
        }
        enum "bfd-mp-download-nack" {
          value 4;
          description "bfd mp download nack";
        }
        enum "bfd-mp-download-delete" {
          value 5;
          description
            "bfd mp download delete";
        }
      }
      description "Bfd mp download state";
    }

    typedef Bfd-mgmt-session-diag {
      type enumeration {
        enum "bfd-mgmt-session-diag-none" {
          value 0;
          description "No diagnostic";
        }
        enum
          "bfd-mgmt-session-diag-control-detect-expired" {
          value 1;
          description
            "Control Detection Time Expired";
        }
        enum
          "bfd-mgmt-session-diag-echo-function-failed" {
          value 2;
          description "Echo Function Failed";
        }
        enum
          "bfd-mgmt-session-diag-nb-or-signaled-down" {
          value 3;
          description
            "Neighbor Signaled Session Down";
        }
        enum
          "bfd-mgmt-session-diag-fwding-plane-reset" {
          value 4;
          description
            "Forwarding Plane Reset";
        }
        enum
          "bfd-mgmt-session-diag-path-down" {
          value 5;
          description "Path Down";
        }
        enum
          "bfd-mgmt-session-diag-conc-path-down" {
          value 6;
          description
            "Concatenated Path Down";
        }
        enum
          "bfd-mgmt-session-diag-admin-down" {
          value 7;
          description
            "Administratively Down";
        }
        enum
          "bfd-mgmt-session-diag-rev-conc-path-down" {
          value 8;
          description
            "Reverse Concatenated Path Down";
        }
        enum "bfd-mgmt-session-diag-num" {
          value 10;
          description
            "Unknown diagnostic state";
        }
      }
      description "BFD session diagnostic";
    }

    typedef Bfd-in6-addr {
      type inet:ipv6-address;
      description "Bfd in6 addr";
    }

    typedef Bfd-in-addr {
      type inet:ipv4-address;
      description "Bfd in addr";
    }

    typedef Bfd-af-id {
      type enumeration {
        enum "bfd-af-id-none" {
          value 0;
          description "No Address";
        }
        enum "bfd-af-id-ipv4" {
          value 2;
          description "IPv4 AFI";
        }
        enum "bfd-af-id-ipv6" {
          value 10;
          description "IPv6 AFI";
        }
      }
      description "Bfd af id";
    }

    typedef Bfd-discr {
      type uint32;
      description "Bfd discr";
    }

    typedef Bfd-mgmt-pkt-display {
      type enumeration {
        enum
          "bfd-mgmt-pkt-display-type-none" {
          value 0;
          description "None";
        }
        enum
          "bfd-mgmt-pkt-display-type-bob-mbr" {
          value 1;
          description
            "Display Type Bundle RTR Member";
        }
        enum "bfd-mgmt-pkt-display-type-max" {
          value 2;
          description
            "Display Type Enum Max Value";
        }
      }
      description "BFD session type";
    }

    typedef Bfd-session {
      type enumeration {
        enum "undefined" {
          value 0;
          description
            "Session type is undefined";
        }
        enum "bundle-member" {
          value 1;
          description
            "Session type is bundle member";
        }
        enum "bundle-interface" {
          value 2;
          description
            "Session type is bundle interface";
        }
        enum "state-inheriting" {
          value 3;
          description
            "Session type is state inheriting";
        }
        enum "bundle-vlan" {
          value 4;
          description
            "Session type is bundle vlan";
        }
        enum "mpls-tp" {
          value 5;
          description
            "Session type is MPLS-TP";
        }
        enum "gre" {
          value 6;
          description
            "Session type is GRE tunnel";
        }
        enum "pseudowire-headend" {
          value 7;
          description
            "Session type is PW-HE";
        }
        enum "ip-single-hop" {
          value 8;
          description
            "Session type is IP single hop";
        }
      }
      description "BFD session type";
    }

    typedef Bfd-mgmt-session-state {
      type enumeration {
        enum
          "bfd-mgmt-session-state-admin-down" {
          value 0;
          description
            "Session in Administratively Shutdown State";
        }
        enum "bfd-mgmt-session-state-down" {
          value 1;
          description
            "Session in Down State";
        }
        enum "bfd-mgmt-session-state-init" {
          value 2;
          description
            "Session in Initializing State";
        }
        enum "bfd-mgmt-session-state-up" {
          value 3;
          description "Session in Up State";
        }
        enum
          "bfd-mgmt-session-state-failing" {
          value 4;
          description
            "Session in Failing State";
        }
        enum
          "bfd-mgmt-session-state-unknown" {
          value 6;
          description
            "Session in Unknown State";
        }
      }
      description "BFD session states";
    }
  }  // submodule Cisco-IOS-XR-ip-bfd-oper-sub1