module huawei-ifm-cpos-trunk {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-ifm-cpos-trunk";

    prefix ifm-cpos-trunk;

    import huawei-ifm {
      prefix ifm;
    }
    import huawei-extension {
      prefix ext;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
     Bantian, Longgang
     Shenzhen 518129
     People's Republic of China
     Website: http://www.huawei.com
     Email: support@huawei.com";

    description
      "Defines the Cpos-Trunk bundling technology, which bundles multiple physical interfaces into a logical interface.";

    revision "2020-02-14" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "trunk";

    typedef channel-mode-type {
      type enumeration {
        enum "vc12" {
          value 0;
          description "VC12.";
        }
        enum "vc4" {
          value 1;
          description "VC4.";
        }
      }
      description "Cpos Trunk Channel Mode.";
    }

    typedef active-status-type {
      type enumeration {
        enum "invalid" {
          value 0;
          description "Invalid.";
        }
        enum "active" {
          value 1;
          description
            "The interface is in Active state.";
        }
        enum "inactive" {
          value 2;
          description
            "The interface is in InActive state.";
        }
      }
      description
        "Cpos trunk member active state.";
    }

    typedef e1t1-work-mode-type {
      type enumeration {
        enum "framed" {
          value 0;
          description "Framed.";
        }
        enum "unframed" {
          value 1;
          description "Unframed.";
        }
      }
      description "E1T1 work mode type.";
    }

    augment /ifm:ifm/ifm:interfaces/ifm:interface {
      when "ifm:type='Cpos-Trunk'";
      description
        "Active when the interface is set to type Cpos-Trunk.";
      container cpos-trunk {
        description
          "Configure the Cpos-Trunk interface, which is a logical interface with multiple physical interfaces being bundled.";
        leaf channel-mode {
          type channel-mode-type;
          default "vc12";
          description "Channel mode.";
        }

        leaf up-member-num {
          type uint32 {
            range "0..2";
          }
          config false;
          description
            "Specifies the number of member interfaces in the Up state.";
        }

        container members {
          description
            "List of cpos-trunk member interfaces.";
          list member {
            key "name";
            max-elements 2;
            description
              "Configure cpos-trunk member interfaces.";
            leaf name {
              type leafref {
                path
                  "/ifm:ifm/ifm:interfaces/ifm:interface/ifm:name";
              }
              must
                "/ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/ifm:type='Cpos'";
              description
                "Configures a name for a cpos-trunk member interface.";
            }

            leaf port-status {
              type ifm:port-status;
              config false;
              description
                "Displays the status of a cpos-trunk member interface.";
            }

            leaf active-status {
              type active-status-type;
              config false;
              description
                "Displays the active status of a cpos-trunk member interface.";
            }
          }  // list member
        }  // container members

        container e1t1s {
          when "not(../channel-mode='vc4')";
          description
            "List of E1T1 port attributes.";
          list e1t1 {
            ext:operation-exclude "create";
            ext:generated-by "system" {
              when "not(../../channel-mode='vc4')";
              description "The all instances are generated automatically when channel-mode is not vc4.";
            }
            key "number";
            max-elements 63;
            description
              "Configure E1T1 port attribute.";
            leaf number {
              type uint32 {
                range "1..63";
              }
              description "E1T1 number.";
            }

            leaf work-mode {
              type e1t1-work-mode-type;
              default "framed";
              description "Work mode.";
            }

            container channel-sets {
              when
                "not(../work-mode='unframed')";
              description
                "List of channel-sets.";
              list channel-set {
                key "number";
                max-elements 31;
                description
                  "Configure channel-set.";
                leaf number {
                  type uint32 {
                    range "0..30";
                  }
                  description
                    "Channel-set number.";
                }

                leaf timeslot-list {
                  type string {
                    length "1..83";
                  }
                  mandatory true;
                  description
                    "Timeslot list. Please enter a number from 0 to 31 with ',' or '-' in the middle, like '1-10,11'.";
                }
              }  // list channel-set
            }  // container channel-sets
          }  // list e1t1
        }  // container e1t1s
      }  // container cpos-trunk
    }
  }  // module huawei-ifm-cpos-trunk