module openconfig-igmp {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/igmp";

    prefix oc-igmp;

    import openconfig-igmp-types {
      prefix oc-igmp-types;
    }
    import openconfig-types {
      prefix oc-types;
    }
    import openconfig-acl {
      prefix oc-acl;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-interfaces {
      prefix oc-if;
    }
    import ietf-inet-types {
      prefix inet;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
    www.openconfig.net";

    description
      "An OpenConfig model for Internet Group Management Protocol (IGMP).";

    revision "2019-07-09" {
      description
        "Re-indent module to two spaces.
      Normalise timeticks64 usage to nanoseconds.";
      reference
        "0.2.0";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "0.1.1";

    }

    revision "2018-02-19" {
      description "Initial revision.";
      reference
        "0.1.0";

    }

    oc-ext:openconfig-version "0.2.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    grouping admin-config {
      description
        "Re-usable grouping to enable or disable a particular feature.";
      leaf enabled {
        type boolean;
        default 'false';
        description
          "When set to true, the functionality within which this
        leaf is defined is enabled, when set to false it is
        explicitly disabled.";
      }
    }  // grouping admin-config

    grouping igmp-interface-config {
      description
        "Configuration data for IGMP on each interface.";
      leaf interface-id {
        type oc-if:interface-id;
        description
          "Reference to an interface on which IGMP is enabled.";
      }

      uses admin-config;

      leaf version {
        type oc-igmp-types:igmp-version;
        description "IGMP Version.";
      }

      leaf query-interval {
        type oc-igmp-types:igmp-interval-type;
        description
          "Interval at which the router sends the IGMP membership
        queries.";
      }

      leaf filter-prefixes {
        type string;
        description
          "List used to filter joins.";
      }
    }  // grouping igmp-interface-config

    grouping igmp-counters-per-version {
      description
        "Counters for each IGMP protocol version.";
      container state {
        config false;
        description
          "Counters for each IGMP protocol version.";
        leaf v1 {
          type uint32;
          description "IGMP v1.";
        }

        leaf v2 {
          type uint32;
          description "IGMP v2.";
        }

        leaf v3 {
          type uint32;
          description "IGMP v3.";
        }
      }  // container state
    }  // grouping igmp-counters-per-version

    grouping igmp-interface-counters {
      description
        "State and session data for IGMP on each interface.";
      container counters {
        description
          "Counters avaiable on a per interface bases for IGMP.";
        container queries {
          description
            "IGMP membership queries.";
          container sent {
            description
              "Number of IGMP membership queries sent.";
            uses igmp-counters-per-version;
          }  // container sent

          container received {
            description
              "Number of IGMP membership queries received.";
            uses igmp-counters-per-version;
          }  // container received
        }  // container queries

        container reports {
          description
            "Number of IGMP membership reports received.";
          uses igmp-counters-per-version;
        }  // container reports
      }  // container counters
    }  // grouping igmp-interface-counters

    grouping igmp-snooping-state {
      description
        "IGMP membership snooping state.";
      leaf group {
        type inet:ipv4-address;
        description "Multicast address.";
      }

      leaf source {
        type inet:ipv4-address;
        description
          "Source address of multicast.";
      }

      leaf reporter {
        type inet:ipv4-address;
        description
          "Address of the last reporter.";
      }
    }  // grouping igmp-snooping-state

    grouping igmp-snooping-structural {
      description
        "IGMP membership information determined through snooping.";
      container membership-groups {
        description
          "List of IGMP Membership information.";
        list group {
          key "group";
          config false;
          description
            "Multicast group membership.";
          leaf group {
            type leafref {
              path "../state/group";
            }
            description "Multicast address.";
          }

          container state {
            config false;
            description
              "Multicast group membership.";
            uses igmp-snooping-state;
          }  // container state
        }  // list group
      }  // container membership-groups
    }  // grouping igmp-snooping-structural

    grouping igmp-interface-state {
      description "IGMP interface state.";
      leaf query-expires {
        type oc-types:timeticks64;
        description
          "This timestamp indicates the time that the next query is sent
      expressed relative to the Unix Epoch (Jan 1, 1970 00:00:00 UTC).";
      }
    }  // grouping igmp-interface-state

    grouping igmp-interface-top {
      description
        "Configuration and state data for IGMP on each interface.";
      container interfaces {
        description
          "The interfaces on which IGMP is configured.";
        list interface {
          key "interface-id";
          description
            "This container defines interface IGMP configuration and
          state information.";
          leaf interface-id {
            type leafref {
              path "../config/interface-id";
            }
            description
              "Reference to an interface on which IGMP is enabled.";
          }

          container config {
            description
              "IGMP interface configuration.";
            uses igmp-interface-config;
          }  // container config

          container state {
            config false;
            description
              "This container defines state information for IGMP
            interfaces.";
            uses igmp-interface-state;

            uses igmp-interface-config;
          }  // container state

          uses igmp-interface-counters;

          uses igmp-snooping-structural;

          uses oc-if:interface-ref;
        }  // list interface
      }  // container interfaces
    }  // grouping igmp-interface-top

    grouping igmp-ssm-maps-config {
      description
        "A Source Specific Multicast (SSM) mapping. This allows
      IGMP v2 hosts to be able to join in SSM environments
      by translating IGMP v2 reports into IGMP v3 reports.
      The request in an IGMP v2 join is sent toward the source
      address found by matching the multicast address.";
      leaf source {
        type inet:ipv4-address;
        description
          "Multicast source address.";
      }

      leaf ssm-ranges {
        type leafref {
          path
            "/oc-acl:acl/oc-acl:acl-sets/oc-acl:acl-set/"
              + "oc-acl:config/oc-acl:name";
        }
        description
          "List of accepted source specific multicast (SSM) address
        ranges.";
      }
    }  // grouping igmp-ssm-maps-config

    grouping igmp-global-config {
      description
        "This grouping defines global config options for IGMP.";
    }  // grouping igmp-global-config

    grouping igmp-global-top {
      description
        "Top level grouping for global IGMP configuration.";
      container ssm {
        description
          "Source specific multicast (SSM).";
        container mappings {
          description
            "A list of source specific multicast (SSM) mappings.";
          list mapping {
            key "source";
            description
              "A Source Specific Multicast (SSM) mapping. This allows
            IGMP v2 hosts to be able to join in SSM environments
            by translating IGMP v2 reports into IGMP v3 reports.
            The request in an IGMP v2 join is sent toward the source
            address found by matching the multicast address.";
            leaf source {
              type leafref {
                path "../config/source";
              }
              description
                "Multicast source address.";
            }

            container config {
              description
                "Configuration for SSM maps.";
              uses igmp-ssm-maps-config;
            }  // container config

            container state {
              config false;
              description
                "State for SSM maps.";
              uses igmp-ssm-maps-config;
            }  // container state
          }  // list mapping
        }  // container mappings
      }  // container ssm
    }  // grouping igmp-global-top

    grouping igmp-top {
      description
        "Top-level grouping for IGMP.";
      container igmp {
        description
          "Top-level IGMP configuration and operational state.";
        container global {
          description
            "Global IGMP configuration and operational state.";
          uses igmp-global-top;
        }  // container global

        uses igmp-interface-top;
      }  // container igmp
    }  // grouping igmp-top
  }  // module openconfig-igmp