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";
    }

    container mpls-forwarding-oper-data {
      config false;
      description
        "MPLS forwarding operational data";
      list mpls-local-label {
        key "local-label";
        description
          "Local label information";
        leaf local-label {
          type uint32;
          description "Value of local label";
        }

        container connection-information {
          description
            "Connection information for the local label";
          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
        }  // container connection-information

        list forwarding-paths {
          description
            "ECMP paths for the local label";
          container outgoing-interface {
            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
          }  // container outgoing-interface

          container outgoing-label {
            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
          }  // container outgoing-label

          container next-hop {
            description
              "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
          }  // container next-hop
        }  // list forwarding-paths
      }  // list mpls-local-label

      list mpls-local-label-statistics {
        key "local-label forwarding-path-index";
        description
          "Statistics for forwarding paths of the local labels";
        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";
        }

        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";
        }
      }  // list mpls-local-label-statistics

      list ecmp-local-label {
        key "local-label";
        description "Native MPLS MFI model";
        leaf local-label {
          type uint32;
          description "Value of local label";
        }

        container stats-summary {
          description
            "Total number of bytes and packets switched of all 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";
          }
        }  // container stats-summary

        list ecmp-index {
          key "ecmp-idx";
          description
            "Reference to the index of a ECMP path";
          leaf ecmp-idx {
            type uint64;
            description
              "Number of an ECMP path";
          }

          container connection-information {
            description
              "Connection information for a local label";
            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
          }  // container connection-information

          container outgoing-interface {
            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
          }  // container outgoing-interface

          container outgoing-label {
            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
          }  // container outgoing-label

          container next-hop {
            description
              "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
          }  // container next-hop

          container label-stats {
            description
              "Statistics of a label";
            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";
            }
          }  // container label-stats
        }  // list ecmp-index
      }  // list ecmp-local-label
    }  // container mpls-forwarding-oper-data
  }  // module Cisco-IOS-XE-mpls-forwarding-oper