submodule Cisco-IOS-XR-ethernet-loopback-oper-sub1 {

    yang-version 1;

    belongs-to
      Cisco-IOS-XR-ethernet-loopback-oper {
        prefix
          Cisco-IOS-XR-ethernet-loopback-oper;
    }

    import ietf-yang-types {
      prefix yang;
    }
    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 ethernet-loopback package operational data.
     
     Copyright (c) 2013-2019 by Cisco Systems, Inc.
     All rights reserved.";

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

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

    semver:module-version "1.0.0";

    typedef Edpl-bag-status {
      type enumeration {
        enum "invalid" {
          value 958450333;
          description
            "Invalid loopback session status";
        }
        enum "starting" {
          value 958450334;
          description "Loopback starting";
        }
        enum "active" {
          value 958450335;
          description "Loopback active";
        }
        enum "stopping" {
          value 958450336;
          description "Loopback stopping";
        }
      }
      description "Loopback status";
    }

    typedef Edpl-bag-session {
      type enumeration {
        enum "local" {
          value 0;
          description "Local Session";
        }
        enum "latching" {
          value 1;
          description
            "Remote-initiated session";
        }
      }
      description "EDPL session type";
    }

    typedef Edpl-bag-direction {
      type enumeration {
        enum "invalid" {
          value 0;
          description "Invalid direction";
        }
        enum "external" {
          value 1;
          description "External direction";
        }
        enum "internal" {
          value 2;
          description "Internal direction";
        }
      }
      description "EDPL direction";
    }

    typedef Edpl-bag-remote-session-status {
      type enumeration {
        enum "inactive" {
          value 0;
          description
            "Inactive remote session";
        }
        enum "active" {
          value 1;
          description
            "Active remote session";
        }
      }
      description "Remote session status";
    }

    typedef Edpl-bag-vlan {
      type enumeration {
        enum "unspecified" {
          value 0;
          description
            "Unspecified VLAN type";
        }
        enum "dot1q" {
          value 1;
          description "Dot1Q VLAN type";
        }
        enum "dot1ad" {
          value 2;
          description "Dot1ad VLAN type";
        }
      }
      description "EDPL VLAN type";
    }

    typedef Mac-address {
      type yang:mac-address;
      description "MAC address type";
    }

    typedef Cfm-bag-ll {
      type enumeration {
        enum "activate" {
          value 0;
          description
            "Loopback activate request";
        }
        enum "deactivate" {
          value 1;
          description
            "Loopback deactivate request";
        }
        enum "state-request" {
          value 2;
          description
            "Loopback state request";
        }
        enum "activate-response" {
          value 3;
          description
            "Loopback activate response";
        }
        enum "deactivate-response" {
          value 4;
          description
            "Loopback deactivate response";
        }
        enum "state-response" {
          value 5;
          description
            "Loopback state response";
        }
      }
      description "Cfm bag ll";
    }

    typedef Edpl-bag-message-dir {
      type enumeration {
        enum "incoming" {
          value 0;
          description "Incoming message";
        }
        enum "outgoing" {
          value 1;
          description "Outgoing message";
        }
      }
      description "Edpl bag message dir";
    }

    grouping EDPL-BAG-VLAN-RANGE {
      description "EDPL VLAN range";
      leaf min {
        type uint16;
        description "Lowest value";
      }

      leaf max {
        type uint16;
        description "Highest value";
      }
    }  // grouping EDPL-BAG-VLAN-RANGE

    grouping EDPL-BAG-VLAN-RANGE-ARRAY {
      description
        "EDPL VLAN range array structure";
      list vlan-range {
        max-elements 10;
        description "VLAN range";
        uses EDPL-BAG-VLAN-RANGE;
      }  // list vlan-range
    }  // grouping EDPL-BAG-VLAN-RANGE-ARRAY

    grouping EDPL-BAG-SESSION {
      description "EDPL session details";
      container outer-vlan-range {
        description "Outer VLAN range";
        uses EDPL-BAG-VLAN-RANGE-ARRAY;
      }  // container outer-vlan-range

      container inner-vlan-range {
        description "Inner VLAN range";
        uses EDPL-BAG-VLAN-RANGE-ARRAY;
      }  // container inner-vlan-range

      leaf session-id {
        type uint32;
        description "Session ID";
      }

      leaf direction {
        type Edpl-bag-direction;
        description "Loopback direction";
      }

      leaf session-type {
        type Edpl-bag-session;
        description "Loopback session type";
      }

      leaf meg-level {
        type uint16;
        description "MEG level";
      }

      leaf status {
        type Edpl-bag-status;
        description "Loopback status";
      }

      leaf outer-vlan-type {
        type Edpl-bag-vlan;
        description "Outer VLAN type";
      }

      leaf source-mac-address {
        type Mac-address;
        description "Source MAC address";
      }

      leaf destination-mac-address {
        type Mac-address;
        description
          "Destination MAC address";
      }

      leaf ether-type {
        type uint16;
        description "Ether type";
      }

      leaf cos {
        type uint8;
        description "Class of Service";
      }

      leaf llc-oui {
        type uint32;
        description "LLC OUI";
      }

      leaf timeout {
        type uint32;
        description "Timeout period (s)";
      }

      leaf time-left {
        type uint32;
        description "Time left (s)";
      }
    }  // grouping EDPL-BAG-SESSION

    grouping EDPL-ACTIVE-BAG {
      description
        "Details of active loopback sessions for an
       interface";
      list session {
        description "Session information";
        uses EDPL-BAG-SESSION;
      }  // list session
    }  // grouping EDPL-ACTIVE-BAG

    grouping EDPL-PERMITTED-BAG {
      description
        "Details of whether EDPL is permitted on an
       interface";
      leaf external {
        type boolean;
        description
          "TRUE if external loopback is permitted";
      }

      leaf internal {
        type boolean;
        description
          "TRUE if internal loopback is permitted";
      }

      leaf external-latching {
        type boolean;
        description
          "TRUE if external latching-loopback is permitted";
      }

      leaf internal-latching {
        type boolean;
        description
          "TRUE if internal latching-loopback is permitted";
      }

      leaf log-changes {
        type boolean;
        description
          "TRUE if log-changes are to be recorded";
      }

      leaf latching-loopback-controller {
        type boolean;
        description
          "TRUE if the latching loopback ctrlr is enabled";
      }
    }  // grouping EDPL-PERMITTED-BAG

    grouping EDPL-MESSAGE-BAG {
      description
        "Contents of a single loopback message";
      leaf message-id {
        type uint32;
        description "The message ID";
      }

      leaf time {
        type uint32;
        description
          "Time the message was sent";
      }

      leaf direction {
        type Edpl-bag-message-dir;
        description
          "Was the message sent or received?";
      }

      leaf type {
        type Cfm-bag-ll;
        description "Loopback message type";
      }

      leaf interface {
        type string;
        description "Interface name";
      }

      leaf mac {
        type Mac-address;
        description
          "target/source mac for outgoing/incoming messages";
      }

      leaf mep {
        type uint16;
        description
          "target/source mep for outgoing/incoming messages";
      }

      leaf mep-specified {
        type boolean;
        description "MEP ID is specified";
      }

      leaf domain {
        type string;
        description
          "CFM domain on which the message was sent";
      }

      leaf service {
        type string;
        description
          "CFM service on which the message was sent";
      }

      leaf oam-level {
        type uint16;
        description
          "Indicates level of CFM domain";
      }

      leaf outer-type {
        type Edpl-bag-vlan;
        description
          "type of outer VLAN tag (dot1ad or dot1Q)";
      }

      leaf outer-vlanid {
        type uint16;
        description "Outer VLAN ID";
      }

      leaf outer-vlan-specified {
        type boolean;
        description
          "Outer VLAN ID specified";
      }

      leaf inner-vlanid {
        type uint16;
        description "Inner VLAN ID";
      }

      leaf inner-vlan-specified {
        type boolean;
        description
          "Inner VLAN ID specified";
      }

      leaf multicast {
        type boolean;
        description
          "Was the message sent multicast?";
      }

      leaf capabilities {
        type uint8;
        description
          "Flags specifying capabilities of sender";
      }

      leaf all-vlans {
        type boolean;
        description
          "Was all_vlans flag specified?";
      }

      leaf response-code {
        type uint8;
        description "Error code specified";
      }

      leaf status {
        type Edpl-bag-remote-session-status;
        description
          "Status of the loopback session";
      }

      leaf session-direction {
        type Edpl-bag-direction;
        description
          "Direction of the loopback session";
      }

      leaf timer {
        type uint32;
        units "second";
        description
          "Length of the expiration timer, in seconds";
      }
    }  // grouping EDPL-MESSAGE-BAG

    grouping EDPL-MESSAGES-BAG {
      description
        "Bag containing loopback messages";
      list message {
        description
          "Loopback messages information";
        uses EDPL-MESSAGE-BAG;
      }  // list message
    }  // grouping EDPL-MESSAGES-BAG
  }  // submodule Cisco-IOS-XR-ethernet-loopback-oper-sub1