module ntp {

    yang-version 1;

    namespace
      "http://cisco.com/calvados/ntp";

    prefix ntp;

    import tailf-common {
      prefix tailf;
    }
    import ietf-yang-types {
      prefix yang;
    }
    import Cisco-IOS-XR-sysadmin-show-trace {
      prefix show_trace;
    }

    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 module contains a collection of YANG definitions
     for Cisco IOS-XR syadmin NTP configuration.

     This module contains definitions
     for the following management objects:
     NTP configuration data

     Copyright (c) 2013-2020 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2016-07-04" {
      description "Remove refine stmt";
    }

    revision "2016-05-12" {
      description "Initial version";
    }


    grouping ntp_target {
      leaf name {
        type string;
      }

      leaf version {
        type int32 {
          range "1 .. 4";
        }
      }

      leaf key-id {
        type int32 {
          range "1 .. 65534";
        }
      }

      leaf prefer {
        type empty;
      }
    }  // grouping ntp_target

    container ntp {
      list peer {
        key "name";
        uses ntp_target;
      }  // list peer

      list server {
        key "name";
        uses ntp_target;
      }  // list server

      leaf-list trusted-key {
        type int32 {
          range "1 .. 65534";
        }
      }

      leaf authenticate {
        type empty;
      }

      list authentication-key {
        key "key-number";
        leaf key-number {
          type int32 {
            range "1 .. 65534";
          }
        }

        leaf md5-keyword {
          type enumeration {
            enum "md5" {
              value 0;
            }
          }
          mandatory true;
        }

        leaf encryption {
          type enumeration {
            enum "clear" {
              value 0;
            }
            enum "encrypted" {
              value 1;
            }
          }
        }

        leaf keyname {
          type string {
            length "min .. 32";
          }
          mandatory true;
        }
      }  // list authentication-key

      container trace {
        config false;
        container ntp_helper {
          uses show_trace:traceable;
        }  // container ntp_helper
      }  // container trace
    }  // container ntp

    container clock-action {
      config false;
      container clock {
        container Action {
          tailf:action "update-calendar" {
            output {
              leaf "status" {
                type "string";
                mandatory "false";
              }
            }
          }
          tailf:action "read-calendar" {
            output {
              leaf "status" {
                type "string";
                mandatory "false";
              }
            }
          }
          tailf:action "set" {
            input {
              leaf "time" {
                type "yang:date-and-time";
                mandatory "true";
              }
            }
            output {
              leaf "status" {
                type "string";
                mandatory "false";
              }
            }
          }
        }  // container Action
      }  // container clock
    }  // container clock-action
  }  // module ntp