module Cisco-IOS-XE-mpls-forwarding-oper {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XE-mpls-forwarding-oper";

    prefix mpls-forwarding-ios-xe-oper;

    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-types {
      prefix yang;
    }
    import cisco-semver {
      prefix cisco-semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service

     Postal: 170 W Tasman Drive
     San Jose, CA 95134

     Tel: +1 1800 553-NETS

     E-mail: cs-yang@cisco.com";

    description
      "This module contains a collection of YANG definitions
     for mpls forwarding operational data.
     Copyright (c) 2018-2019 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2020-03-01" {
      description
        "Added new model for MPLS MFI";
      reference
        "1.3.0";

    }

    revision "2019-05-01" {
      description "Added semantic version";
      reference
        "1.2.0";

    }

    revision "2018-10-29" {
      description
        "Cleaned up spelling errors in descriptions.";
      reference
        "1.1.0";

    }

    revision "2017-11-01" {
      description "Initial revision";
      reference
        "1.0.0";

    }

    cisco-semver:module-version "1.3.0";
    cisco-semver:module-version "1.2.0";
    cisco-semver:module-version "1.1.0";
    cisco-semver:module-version "1.0.0";

    typedef outgoing-interface-type {
      type enumeration {
        enum "drop" {
          value 0;
          description
            "Outgoing interface is not found";
        }
        enum "punt" {
          value 1;
          description "Punt packets to cpu";
        }
        enum "aggregate" {
          value 2;
          description
            "Aggregate interface (e.g., used for VPN label allocation)";
        }
        enum "exception" {
          value 3;
          description "Exception";
        }
        enum "none" {
          value 4;
          description
            "No outgoing interface";
        }
      }
      description
        "Describes supported outgoing interface types";
    }

    typedef outgoing-interface-description-type {
      type enumeration {
        enum "interface-type" {
          value 0;
          description
            "Forwarding path's outgoing interface type";
        }
        enum "interface-value" {
          value 1;
          description
            "Forwarding path's outgoing interface value";
        }
      }
      description
        "Describes outgoing interface information types";
    }

    typedef outgoing-label-type {
      type enumeration {
        enum "no-label" {
          value 0;
          description
            "A label is not present";
        }
        enum "pop-label" {
          value 1;
          description "Label is popped";
        }
        enum "ipv4-explicit-null" {
          value 2;
          description
            "IPv4 explicit NULL label is present";
        }
        enum "ipv6-explicit-null" {
          value 3;
          description
            "IPv6 explicit NULL label is present";
        }
        enum "regular-label" {
          value 4;
          description
            "A regular MPLS label is present";
        }
        enum "invalid-label" {
          value 5;
          description
            "An invalid label is present";
        }
      }
      description
        "Describes supported outgoing label types";
    }

    typedef connection-info-type {
      type enumeration {
        enum "information-string" {
          value 0;
          description
            "Connection information string";
        }
        enum "ip-prefix" {
          value 1;
          description
            "IP prefix for the connection";
        }
      }
      description
        "Describes connection information types";
    }

    typedef forwarding-next-hop-type {
      type enumeration {
        enum "point2point" {
          value 0;
          description
            "Next hop is via a P2P link";
        }
        enum "next-hop-ip-address" {
          value 1;
          description "Next hop IP address";
        }
        enum "next-hop-mac-address" {
          value 2;
          description "Next hop MAC address";
        }
      }
      description
        "Describes supported next hop types";
    }

    grouping outgoing-interface-info {
      description
        "Outgoing interface information";
      choice discrim-choice {
        description
          "Type of interface information";
        leaf interface-type {
          type outgoing-interface-type;
          description
            "Outgoing interface type";
        }
        leaf interface-value {
          type string;
          description
            "Outgoing interface value";
        }
      }  // choice discrim-choice
    }  // grouping outgoing-interface-info

    grouping outgoing-label-info {
      description
        "Outgoing label information";
      choice discrim-choice {
        description "Type of label";
        leaf no-label {
          type boolean;
          description
            "True if a label is not present";
        }
        leaf pop-label {
          type uint32;
          description "Pop label value";
        }
        leaf ipv4-explicit-null {
          type uint32;
          description
            "IPv4 explicit null label value";
        }
        leaf ipv6-explicit-null {
          type uint32;
          description
            "IPv6 explicit null label value";
        }
        leaf regular-label {
          type uint32;
          description "Regular label value";
        }
        leaf invalid-label {
          type boolean;
          description
            "True if a label with a value that is outside IETF acceptable label range is present";
        }
      }  // choice discrim-choice
    }  // grouping outgoing-label-info

    grouping connection-info {
      description "Connection information";
      choice discrim-choice {
        description
          "Type of connection information";
        leaf info-str {
          type string;
          description
            "Connection information string";
        }
        leaf ip-prefix {
          type inet:ip-prefix;
          description
            "IP prefix for the connection";
        }
      }  // choice discrim-choice
    }  // grouping connection-info

    grouping forwarding-next-hop {
      description
        "Forwarding next hop information";
      choice discrim-choice {
        description "Next hop type";
        leaf p2p {
          type boolean;
          description
            "True if next hop is via a p2p link";
        }
        leaf ip-address {
          type inet:ip-address;
          description "Next hop ip address";
        }
        leaf mac-address {
          type yang:mac-address;
          description "Next hop mac address";
        }
      }  // choice discrim-choice
    }  // grouping forwarding-next-hop

    grouping local-label-forwarding-info {
      description
        "Information of a given forwarding path";
      container outgoing-interface {
        description
          "Outgoing interface information";
        uses mpls-forwarding-ios-xe-oper:outgoing-interface-info;
      }  // container outgoing-interface

      container outgoing-label {
        description
          "Outgoing label information";
        uses mpls-forwarding-ios-xe-oper:outgoing-label-info;
      }  // container outgoing-label

      container next-hop {
        description "Next hop information";
        uses mpls-forwarding-ios-xe-oper:forwarding-next-hop;
      }  // container next-hop
    }  // grouping local-label-forwarding-info

    grouping local-label-entry {
      description "Local label entry";
      container connection-information {
        description
          "Connection information for the local label";
        uses mpls-forwarding-ios-xe-oper:connection-info;
      }  // container connection-information

      list forwarding-paths {
        description
          "ECMP paths for the local label";
        uses mpls-forwarding-ios-xe-oper:local-label-forwarding-info;
      }  // list forwarding-paths
    }  // grouping local-label-entry

    grouping local-label-key {
      description "Key for the local label";
      leaf local-label {
        type uint32;
        description "Value of local label";
      }
    }  // grouping local-label-key

    grouping local-label-forwarding-path-statistics {
      description
        "Statistics for the forwarding path";
      leaf label-switched-bytes {
        type uint64;
        description
          "Number of bytes switched to a particular ECMP path";
      }

      leaf label-switched-packets {
        type uint64;
        description
          "Number of packets switched to a particular ECMP path";
      }
    }  // grouping local-label-forwarding-path-statistics

    grouping local-label-forwarding-path-key {
      description
        "Key for the forwarding path";
      leaf local-label {
        type uint32;
        description "Value of local label";
      }

      leaf forwarding-path-index {
        type uint8;
        description
          "Path index among ECMP paths for the same local label";
      }
    }  // grouping local-label-forwarding-path-key

    grouping ecmp-local-label-entry {
      description "Details of an ECMP path";
      container connection-information {
        description
          "Connection information for a local label";
        uses mpls-forwarding-ios-xe-oper:connection-info;
      }  // container connection-information

      container outgoing-interface {
        description
          "Outgoing interface information";
        uses mpls-forwarding-ios-xe-oper:outgoing-interface-info;
      }  // container outgoing-interface

      container outgoing-label {
        description
          "Outgoing label information";
        uses mpls-forwarding-ios-xe-oper:outgoing-label-info;
      }  // container outgoing-label

      container next-hop {
        description "Next hop information";
        uses mpls-forwarding-ios-xe-oper:forwarding-next-hop;
      }  // container next-hop

      container label-stats {
        description "Statistics of a label";
        uses mpls-forwarding-ios-xe-oper:local-label-forwarding-path-statistics;
      }  // container label-stats
    }  // grouping ecmp-local-label-entry

    grouping ecmp-index-key {
      description "Key for an ECMP path";
      leaf ecmp-idx {
        type uint64;
        description "Number of an ECMP path";
      }
    }  // grouping ecmp-index-key

    grouping ecmp-stats-summary {
      description
        "Total data of all the ECMP paths for a label";
      leaf total-label-switched-bytes {
        type uint64;
        units "bytes";
        description
          "Total number of bytes switched of all ECMP paths for a label";
      }

      leaf total-label-switched-packets {
        type uint64;
        units "packets";
        description
          "Total number of packets switched of all ECMP paths for a label";
      }
    }  // grouping ecmp-stats-summary

    grouping ecmp-stats {
      description
        "Statistics of all the ECMP paths for a label";
      container stats-summary {
        description
          "Total number of bytes and packets switched of all ECMP paths for a label";
        uses mpls-forwarding-ios-xe-oper:ecmp-stats-summary;
      }  // container stats-summary

      list ecmp-index {
        key "ecmp-idx";
        description
          "Reference to the index of a ECMP path";
        uses mpls-forwarding-ios-xe-oper:ecmp-index-key;

        uses mpls-forwarding-ios-xe-oper:ecmp-local-label-entry;
      }  // list ecmp-index
    }  // grouping ecmp-stats

    container mpls-forwarding-oper-data {
      config false;
      description
        "MPLS forwarding operational data";
      list mpls-local-label {
        key "local-label";
        description
          "Local label information";
        uses mpls-forwarding-ios-xe-oper:local-label-key;

        uses mpls-forwarding-ios-xe-oper:local-label-entry;
      }  // list mpls-local-label

      list mpls-local-label-statistics {
        key "local-label forwarding-path-index";
        description
          "Statistics for forwarding paths of the local labels";
        uses mpls-forwarding-ios-xe-oper:local-label-forwarding-path-key;

        uses mpls-forwarding-ios-xe-oper:local-label-forwarding-path-statistics;
      }  // list mpls-local-label-statistics

      list ecmp-local-label {
        key "local-label";
        description "Native MPLS MFI model";
        uses mpls-forwarding-ios-xe-oper:local-label-key;

        uses mpls-forwarding-ios-xe-oper:ecmp-stats;
      }  // list ecmp-local-label
    }  // container mpls-forwarding-oper-data
  }  // module Cisco-IOS-XE-mpls-forwarding-oper