module Cisco-IOS-XR-um-ntp-cfg {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XR-um-ntp-cfg";

    prefix um-ntp-cfg;

    import Cisco-IOS-XR-types {
      prefix xr;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import Cisco-IOS-XR-um-snmp-server-cfg {
      prefix a1;
    }
    import cisco-semver {
      prefix semver;
    }

    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 ntp package configuration.
     
     This YANG module augments the
     modules with configuration data.
     
     Copyright (c) 2021 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2021-03-03" {
      description "Initial release";
    }

    semver:module-version "1.0.0";

    feature harddisk_is_present {
      description "harddisk is present";
    }

    feature harddiska_is_present {
      description "harddiska is present";
    }

    feature harddiskb_is_present {
      description "harddiskb is present";
    }

    feature a9ksys_is_present {
      description "a9ksys is present";
    }

    feature config_is_present {
      description "config is present";
    }

    feature log_is_present {
      description "log is present";
    }

    feature rootfs_is_present {
      description "rootfs is present";
    }

    feature disk1_is_present {
      description "disk1 is present";
    }

    feature usb_is_present {
      description "usb is present";
    }

    feature usb2_is_present {
      description "usb2 is present";
    }

    feature app_host_is_present {
      description "app host is present";
    }

    feature cflash_fs_supp_check {
      description "cflash fs supp check";
    }

    feature usb_fs_supp_check {
      description "usb fs supp check";
    }

    feature disk2_fs_supp_check {
      description "disk2 fs supp check";
    }

    feature harddisk_fs_supp_check {
      description "harddisk fs supp check";
    }

    feature lcdisk_fs_supp_check {
      description "lcdisk fs supp check";
    }

    container ntp {
      description "Go into NTP submode";
      container ipv4 {
        description
          "Mark the dscp/precedence bit for ipv4 packets";
        leaf dscp {
          type union {
            type uint32 {
              range "0..63";
            }
            type enumeration {
              enum "default" {
                value 0;
                description
                  "Match packets with default dscp (000000)";
              }
              enum "cs1" {
                value 8;
                description
                  "Match packets with CS1(precedence 1) dscp (001000)";
              }
              enum "af11" {
                value 10;
                description
                  "Match packets with AF11 dscp (001010)";
              }
              enum "af12" {
                value 12;
                description
                  "Match packets with AF12 dscp (001100)";
              }
              enum "af13" {
                value 14;
                description
                  "Match packets with AF13 dscp (001110)";
              }
              enum "cs2" {
                value 16;
                description
                  "Match packets with CS2(precedence 2) dscp (010000)";
              }
              enum "af21" {
                value 18;
                description
                  "Match packets with AF21 dscp (010010)";
              }
              enum "af22" {
                value 20;
                description
                  "Match packets with AF22 dscp (010100)";
              }
              enum "af23" {
                value 22;
                description
                  "Match packets with AF23 dscp (010110)";
              }
              enum "cs3" {
                value 24;
                description
                  "Match packets with CS3(precedence 3) dscp (011000)";
              }
              enum "af31" {
                value 26;
                description
                  "Match packets with AF31 dscp (011010)";
              }
              enum "af32" {
                value 28;
                description
                  "Match packets with AF32 dscp (011100)";
              }
              enum "af33" {
                value 30;
                description
                  "Match packets with AF33 dscp (011110)";
              }
              enum "cs4" {
                value 32;
                description
                  "Match packets with CS4(precedence 4) dscp (100000)";
              }
              enum "af41" {
                value 34;
                description
                  "Match packets with AF41 dscp (100010)";
              }
              enum "af42" {
                value 36;
                description
                  "Match packets with AF42 dscp (100100)";
              }
              enum "af43" {
                value 38;
                description
                  "Match packets with AF43 dscp (100110)";
              }
              enum "cs5" {
                value 40;
                description
                  "Match packets with CS5(precedence 5) dscp (101000)";
              }
              enum "ef" {
                value 46;
                description
                  "Match packets with EF dscp (101110)";
              }
              enum "cs6" {
                value 48;
                description
                  "Match packets with CS6(precedence 6) dscp (110000)";
              }
              enum "cs7" {
                value 56;
                description
                  "Match packets with CS7(precedence 7) dscp (111000)";
              }
            }
          }
          must "not(../precedence)";
          description
            "Set IP DSCP (DiffServ CodePoint)";
        }

        leaf precedence {
          type enumeration {
            enum "routine" {
              value 0;
              description
                "Match packets with routine precedence (0)";
            }
            enum "priority" {
              value 1;
              description
                "Match packets with priority precedence (1)";
            }
            enum "immediate" {
              value 2;
              description
                "Match packets with immediate precedence (2)";
            }
            enum "flash" {
              value 3;
              description
                "Match packets with flash precedence (3)";
            }
            enum "flash-override" {
              value 4;
              description
                "Match packets with flash override precedence (4)";
            }
            enum "critical" {
              value 5;
              description
                "Match packets with critical precedence (5)";
            }
            enum "internet" {
              value 6;
              description
                "Match packets with internetwork control precedence (6)";
            }
            enum "network" {
              value 7;
              description
                "Match packets with network control precedence (7)";
            }
          }
          must "not(../dscp)";
          description "Set precedence";
        }
      }  // container ipv4

      container ipv6 {
        description
          "Mark the dscp/precedence bit for ipv6 packets";
        leaf dscp {
          type union {
            type uint32 {
              range "0..63";
            }
            type enumeration {
              enum "default" {
                value 0;
                description
                  "Match packets with default dscp (000000)";
              }
              enum "cs1" {
                value 8;
                description
                  "Match packets with CS1(precedence 1) dscp (001000)";
              }
              enum "af11" {
                value 10;
                description
                  "Match packets with AF11 dscp (001010)";
              }
              enum "af12" {
                value 12;
                description
                  "Match packets with AF12 dscp (001100)";
              }
              enum "af13" {
                value 14;
                description
                  "Match packets with AF13 dscp (001110)";
              }
              enum "cs2" {
                value 16;
                description
                  "Match packets with CS2(precedence 2) dscp (010000)";
              }
              enum "af21" {
                value 18;
                description
                  "Match packets with AF21 dscp (010010)";
              }
              enum "af22" {
                value 20;
                description
                  "Match packets with AF22 dscp (010100)";
              }
              enum "af23" {
                value 22;
                description
                  "Match packets with AF23 dscp (010110)";
              }
              enum "cs3" {
                value 24;
                description
                  "Match packets with CS3(precedence 3) dscp (011000)";
              }
              enum "af31" {
                value 26;
                description
                  "Match packets with AF31 dscp (011010)";
              }
              enum "af32" {
                value 28;
                description
                  "Match packets with AF32 dscp (011100)";
              }
              enum "af33" {
                value 30;
                description
                  "Match packets with AF33 dscp (011110)";
              }
              enum "cs4" {
                value 32;
                description
                  "Match packets with CS4(precedence 4) dscp (100000)";
              }
              enum "af41" {
                value 34;
                description
                  "Match packets with AF41 dscp (100010)";
              }
              enum "af42" {
                value 36;
                description
                  "Match packets with AF42 dscp (100100)";
              }
              enum "af43" {
                value 38;
                description
                  "Match packets with AF43 dscp (100110)";
              }
              enum "cs5" {
                value 40;
                description
                  "Match packets with CS5(precedence 5) dscp (101000)";
              }
              enum "ef" {
                value 46;
                description
                  "Match packets with EF dscp (101110)";
              }
              enum "cs6" {
                value 48;
                description
                  "Match packets with CS6(precedence 6) dscp (110000)";
              }
              enum "cs7" {
                value 56;
                description
                  "Match packets with CS7(precedence 7) dscp (111000)";
              }
            }
          }
          must "not(../precedence)";
          description
            "Set IP DSCP (DiffServ CodePoint)";
        }

        leaf precedence {
          type enumeration {
            enum "routine" {
              value 0;
              description
                "Match packets with routine precedence (0)";
            }
            enum "priority" {
              value 1;
              description
                "Match packets with priority precedence (1)";
            }
            enum "immediate" {
              value 2;
              description
                "Match packets with immediate precedence (2)";
            }
            enum "flash" {
              value 3;
              description
                "Match packets with flash precedence (3)";
            }
            enum "flash-override" {
              value 4;
              description
                "Match packets with flash override precedence (4)";
            }
            enum "critical" {
              value 5;
              description
                "Match packets with critical precedence (5)";
            }
            enum "internet" {
              value 6;
              description
                "Match packets with internetwork control precedence (6)";
            }
            enum "network" {
              value 7;
              description
                "Match packets with network control precedence (7)";
            }
          }
          must "not(../dscp)";
          description "Set precedence";
        }
      }  // container ipv6

      container access-group {
        description "Control NTP access";
        container ipv6 {
          description
            "Configure IPv6 access";
          leaf peer {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide full access";
          }

          leaf query-only {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Allow only control queries";
          }

          leaf serve {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide server and query access";
          }

          leaf serve-only {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide only server access";
          }
        }  // container ipv6

        container ipv4 {
          description
            "Configure IPv4 access";
          leaf peer {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide full access";
          }

          leaf query-only {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Allow only control queries";
          }

          leaf serve {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide server and query access";
          }

          leaf serve-only {
            type xr:Cisco-ios-xr-string {
              length "1..800";
            }
            description
              "Provide only server access";
          }
        }  // container ipv4

        container vrfs {
          description
            "Specify non-default VRF";
          list vrf {
            key "vrf-name";
            description
              "Specify non-default VRF";
            leaf vrf-name {
              type xr:Cisco-ios-xr-string {
                length "1..800";
              }
              description
                "Specify non-default VRF";
            }

            container ipv6 {
              description
                "Configure IPv6 access";
              leaf peer {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide full access";
              }

              leaf query-only {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Allow only control queries";
              }

              leaf serve {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide server and query access";
              }

              leaf serve-only {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide only server access";
              }
            }  // container ipv6

            container ipv4 {
              description
                "Configure IPv4 access";
              leaf peer {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide full access";
              }

              leaf query-only {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Allow only control queries";
              }

              leaf serve {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide server and query access";
              }

              leaf serve-only {
                type xr:Cisco-ios-xr-string {
                  length "1..1024";
                }
                description
                  "Provide only server access";
              }
            }  // container ipv4
          }  // list vrf
        }  // container vrfs
      }  // container access-group

      container authenticate {
        presence
          "Indicates a authenticate node is configured.";
        description
          "Authenticate time sources";
      }  // container authenticate

      container authentication-keys {
        description
          "Authentication key for trusted time sources";
        list authentication-key {
          key "key-number";
          description
            "Authentication key for trusted time sources";
          leaf key-number {
            type uint32 {
              range "1..65535";
            }
            description
              "Authentication key for trusted time sources";
          }

          container md5 {
            description "MD5 authentication";
            leaf encrypted {
              type xr:Proprietary-password;
              mandatory true;
              description
                "Specify an encrypted key";
            }
          }  // container md5
        }  // list authentication-key
      }  // container authentication-keys

      leaf broadcastdelay {
        type uint32 {
          range "1..999999";
        }
        description
          "Estimated round-trip delay";
      }

      container drift {
        description "Drift";
        container aging {
          description "Aging";
          leaf time {
            type uint32 {
              range "0..65535";
            }
            description "Aging time";
          }
        }  // container aging

        container file {
          presence
            "Indicates a file node is configured.";
          description
            "File for drift values";
          container bootflash {
            must
              "not(../compactflash or ../compactflasha or ../usb or ../disk0
             or ../disk0a or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a bootflash node is configured.";
            description
              "drift in bootflash: file system";
          }  // container bootflash

          container compactflash {
            if-feature cflash_fs_supp_check;
            must
              "not(../bootflash or ../compactflasha or ../usb or ../disk0
             or ../disk0a or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a compactflash node is configured.";
            description
              "drift in compactflash: file system";
          }  // container compactflash

          container compactflasha {
            if-feature cflash_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../usb or ../disk0
             or ../disk0a or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a compactflasha node is configured.";
            description
              "drift in compactflasha: file system";
          }  // container compactflasha

          container usb {
            if-feature usb_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../disk0
             or ../disk0a or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a usb node is configured.";
            description
              "drift in usb: file system";
          }  // container usb

          container disk0 {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0a or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a disk0 node is configured.";
            description
              "drift in disk0: file system";
          }  // container disk0

          container disk0a {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk1 or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a disk0a node is configured.";
            description
              "drift in disk0a: file system";
          }  // container disk0a

          container disk1 {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1a or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a disk1 node is configured.";
            description
              "drift in disk1: file system";
          }  // container disk1

          container disk1a {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk2 or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a disk1a node is configured.";
            description
              "drift in disk1a: file system";
          }  // container disk1a

          container disk2 {
            if-feature disk2_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../harddisk
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a disk2 node is configured.";
            description
              "drift in disk2: file system";
          }  // container disk2

          container harddisk {
            if-feature harddisk_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddiska or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a harddisk node is configured.";
            description
              "drift in harddisk: file system";
          }  // container harddisk

          container harddiska {
            if-feature harddisk_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiskb or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a harddiska node is configured.";
            description
              "drift in harddiska: file system";
          }  // container harddiska

          container harddiskb {
            if-feature harddisk_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../nvram or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a hardiskb node is configured.";
            description
              "drift in harddiskb: file system";
          }  // container harddiskb

          container nvram {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../lcdisk0
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a nvram node is configured.";
            description
              "drift in nvram: file system";
          }  // container nvram

          container lcdisk0 {
            if-feature lcdisk_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../nvram
             or ../lcdisk0a or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a lcdisk0 node is configured.";
            description
              "drift in lcdisk0: file system";
          }  // container lcdisk0

          container lcdisk0a {
            if-feature lcdisk_fs_supp_check;
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../nvram
             or ../lcdisk0 or ../tftp or ../ftp or ../rcp)";
            presence
              "Indicates a lcdisk0a node is configured.";
            description
              "drift in lcdisk0a: file system";
          }  // container lcdisk0a

          container tftp {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../nvram
             or ../lcdisk0 or ../lcdisk0a or ../ftp or ../rcp)";
            presence
              "Indicates a tftp node is configured.";
            description
              "drift in tftp: file system";
          }  // container tftp

          container ftp {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../nvram
             or ../lcdisk0 or ../lcdisk0a or ../tftp or ../rcp)";
            presence
              "Indicates a ftp node is configured.";
            description
              "drift in ftp: file system";
          }  // container ftp

          container rcp {
            must
              "not(../bootflash or ../compactflash or ../compactflasha or ../usb
             or ../disk0 or ../disk0a or ../disk1 or ../disk1a or ../disk2
             or ../harddisk or ../harddiska or ../harddiskb or ../nvram
             or ../lcdisk0 or ../lcdisk0a or ../tftp or ../ftp)";
            presence
              "Indicates a rcp node is configured.";
            description
              "drift in rcp: file system";
          }  // container rcp

          leaf file-name {
            type string {
              length "1..800";
            }
            mandatory true;
            description "drift in file";
          }
        }  // container file
      }  // container drift

      container interfaces {
        description
          "Configure NTP on an interface";
        list interface {
          key "interface-name";
          description
            "Configure NTP on an interface";
          leaf interface-name {
            type xr:Interface-name;
            description
              "Configure NTP on an interface";
          }

          container broadcast-client {
            presence
              "Indicates a client node is configured.";
            description
              "Listen to NTP broadcasts";
          }  // container broadcast-client

          container broadcast {
            presence
              "Indicates a broadcast node is configured.";
            description
              "Configure NTP broadcast service";
            leaf destination {
              type inet:ipv4-address-no-zone;
              description
                "Configure broadcast destination address";
            }

            leaf key {
              type uint32 {
                range "1..65535";
              }
              description
                "Configure broadcast authentication key";
            }

            leaf version {
              type uint32 {
                range "2..4";
              }
              description
                "Configure NTP version";
            }
          }  // container broadcast

          container disable {
            presence
              "Indicates a disable node is configured.";
            description "Disable NTP";
          }  // container disable

          container multicast {
            description
              "Configure NTP multicast service";
            container client {
              description
                "Listen to NTP multicasts";
              container no-group {
                presence
                  "Indicates a no-group node is configured.";
                description
                  "Listen to NTP multicasts";
              }  // container no-group

              list ip-address {
                key "address";
                description
                  "Addess of multicast group to join";
                leaf address {
                  type inet:ip-address-no-zone;
                  description
                    "Addess of multicast group to join";
                }
              }  // list ip-address
            }  // container client

            container no-destination {
              presence
                "Indicates a no-destination node is configured.";
              description
                "Configure multicast without destination";
              leaf key {
                type uint32 {
                  range "1..65535";
                }
                description
                  "Configure multicast authentication key";
              }

              leaf version {
                type uint32 {
                  range "2..4";
                }
                description
                  "Configure NTP version";
              }

              leaf ttl {
                type uint32 {
                  range "1..255";
                }
                description
                  "Configure TTL to use";
              }
            }  // container no-destination

            container destinations {
              description
                "Configure multicast destination address";
              list destination {
                key "address";
                description
                  "Configure multicast destination address";
                leaf address {
                  type inet:ip-address-no-zone;
                  description
                    "Configure multicast destination address";
                }

                leaf key {
                  type uint32 {
                    range "1..65535";
                  }
                  description
                    "Configure multicast authentication key";
                }

                leaf version {
                  type uint32 {
                    range "2..4";
                  }
                  description
                    "Configure NTP version";
                }

                leaf ttl {
                  type uint32 {
                    range "1..255";
                  }
                  description
                    "Configure TTL to use";
                }
              }  // list destination
            }  // container destinations
          }  // container multicast
        }  // list interface

        container vrfs {
          description
            "Specify non-default VRF";
          list vrf {
            key "vrf-name";
            description
              "Specify non-default VRF";
            leaf vrf-name {
              type xr:Cisco-ios-xr-string {
                length "1..800";
              }
              description
                "Specify non-default VRF";
            }

            list interface {
              key "interface-name";
              description
                "Configure NTP on an interface";
              leaf interface-name {
                type xr:Interface-name;
                description
                  "Configure NTP on an interface";
              }

              container broadcast-client {
                presence
                  "Indicates a client node is configured.";
                description
                  "Listen to NTP broadcasts";
              }  // container broadcast-client

              container broadcast {
                presence
                  "Indicates a broadcast node is configured.";
                description
                  "Configure NTP broadcast service";
                leaf destination {
                  type inet:ipv4-address-no-zone;
                  description
                    "Configure broadcast destination address";
                }

                leaf key {
                  type uint32 {
                    range "1..65535";
                  }
                  description
                    "Configure broadcast authentication key";
                }

                leaf version {
                  type uint32 {
                    range "2..4";
                  }
                  description
                    "Configure NTP version";
                }
              }  // container broadcast

              container disable {
                presence
                  "Indicates a disable node is configured.";
                description "Disable NTP";
              }  // container disable

              container multicast {
                description
                  "Configure NTP multicast service";
                container client {
                  description
                    "Listen to NTP multicasts";
                  container no-group {
                    presence
                      "Indicates a no-group node is configured.";
                    description
                      "Listen to NTP multicasts";
                  }  // container no-group

                  list ip-address {
                    key "address";
                    description
                      "Addess of multicast group to join";
                    leaf address {
                      type inet:ip-address-no-zone;
                      description
                        "Addess of multicast group to join";
                    }
                  }  // list ip-address
                }  // container client

                container no-destination {
                  presence
                    "Indicates a no-destination node is configured.";
                  description
                    "Configure multicast without destination";
                  leaf key {
                    type uint32 {
                      range "1..65535";
                    }
                    description
                      "Configure multicast authentication key";
                  }

                  leaf version {
                    type uint32 {
                      range "2..4";
                    }
                    description
                      "Configure NTP version";
                  }

                  leaf ttl {
                    type uint32 {
                      range "1..255";
                    }
                    description
                      "Configure TTL to use";
                  }
                }  // container no-destination

                container destinations {
                  description
                    "Configure multicast destination address";
                  list destination {
                    key "address";
                    description
                      "Configure multicast destination address";
                    leaf address {
                      type inet:ip-address-no-zone;
                      description
                        "Configure multicast destination address";
                    }

                    leaf key {
                      type uint32 {
                        range "1..65535";
                      }
                      description
                        "Configure multicast authentication key";
                    }

                    leaf version {
                      type uint32 {
                        range "2..4";
                      }
                      description
                        "Configure NTP version";
                    }

                    leaf ttl {
                      type uint32 {
                        range "1..255";
                      }
                      description
                        "Configure TTL to use";
                    }
                  }  // list destination
                }  // container destinations
              }  // container multicast
            }  // list interface
          }  // list vrf
        }  // container vrfs
      }  // container interfaces

      container primary {
        description
          "Choose a refclock as primary clock for NTP";
        leaf stratum-number {
          type uint32 {
            range "1..15";
          }
          must
            "not(../primary-reference-clock)";
          description
            "Use NTP as clock source with stratum number <n>";
        }

        container primary-reference-clock {
          must "not(../stratum-number)";
          presence
            "Indicates a primary-reference-clock node is configured.";
          description
            "Use a primary reference clock as clock source";
        }  // container primary-reference-clock
      }  // container primary

      leaf max-associations {
        type uint32 {
          range "0..4294967295";
        }
        description
          "Set maximum number of associations";
      }

      container peer-server {
        description
          "configure ntp peer or server";
        container ipv4 {
          description "Specify IPv4 address";
          list ipv4-peer-server {
            key "address type";
            description
              "Specify IPv4 address";
            leaf address {
              type inet:ipv4-address-no-zone;
              description
                "Peer/server address";
            }

            leaf type {
              type enumeration {
                enum "peer" {
                  value 0;
                  description
                    "Configure peer address";
                }
                enum "server" {
                  value 1;
                  description
                    "Configure server address";
                }
              }
              description
                "Specify peer/server";
            }

            leaf version {
              type uint32 {
                range "2..4";
              }
              description
                "Configure NTP version";
            }

            leaf key {
              type uint32 {
                range "1..65535";
              }
              description
                "Configure peer authentication key";
            }

            leaf minpoll {
              type uint32 {
                range "4..5|7..17";
              }
              description
                "Configure minimum polling rate";
            }

            leaf maxpoll {
              type uint32 {
                range "4..9|11..17";
              }
              description
                "Configure maximum polling rate";
            }

            container prefer {
              presence
                "Indicates a prefer node is configured.";
              description
                "Prefer this peer when possible";
            }  // container prefer

            container burst {
              presence
                "Indicates a burst node is configured.";
              description "Use burst mode";
            }  // container burst

            container iburst {
              presence
                "Indicates a iburst node is configured.";
              description
                "Use initial burst mode";
            }  // container iburst

            leaf source {
              type xr:Interface-name;
              description
                "Interface for source address";
            }
          }  // list ipv4-peer-server
        }  // container ipv4

        container ipv6 {
          description "Specify IPv6 address";
          list ipv6-peer-server {
            must "address = ipv6-address";
            key "address type";
            description
              "Specify IPv6 address";
            leaf address {
              type inet:ipv6-address-no-zone;
              description
                "Peer/server address";
            }

            leaf type {
              type enumeration {
                enum "peer" {
                  value 0;
                  description
                    "Configure peer address";
                }
                enum "server" {
                  value 1;
                  description
                    "Configure server address";
                }
              }
              description
                "Specify peer/server";
            }

            leaf version {
              type uint32 {
                range "2..4";
              }
              description
                "Configure NTP version";
            }

            leaf key {
              type uint32 {
                range "1..65535";
              }
              description
                "Configure peer authentication key";
            }

            leaf minpoll {
              type uint32 {
                range "4..5|7..17";
              }
              description
                "Configure minimum polling rate";
            }

            leaf maxpoll {
              type uint32 {
                range "4..9|11..17";
              }
              description
                "Configure maximum polling rate";
            }

            container prefer {
              presence
                "Indicates a prefer node is configured.";
              description
                "Prefer this peer when possible";
            }  // container prefer

            container burst {
              presence
                "Indicates a burst node is configured.";
              description "Use burst mode";
            }  // container burst

            container iburst {
              presence
                "Indicates a iburst node is configured.";
              description
                "Use initial burst mode";
            }  // container iburst

            leaf source {
              type xr:Interface-name;
              description
                "Interface for source address";
            }

            leaf ipv6-address {
              type inet:ipv6-address-no-zone;
              mandatory true;
              description
                "IPv6 address (must be same as key node 'address')";
            }
          }  // list ipv6-peer-server
        }  // container ipv6

        container vrfs {
          description
            "Specify non-default VRF";
          list vrf {
            key "vrf-name";
            description
              "Specify non-default VRF";
            leaf vrf-name {
              type xr:Cisco-ios-xr-string {
                length "1..1024";
              }
              description
                "Specify non-default VRF";
            }

            container ipv4 {
              description
                "Specify IPv4 address";
              list ipv4-peer-server {
                key "address type";
                description
                  "Specify IPv4 address";
                leaf address {
                  type inet:ipv4-address-no-zone;
                  description
                    "Peer/server address";
                }

                leaf type {
                  type enumeration {
                    enum "peer" {
                      value 0;
                      description
                        "Configure peer address";
                    }
                    enum "server" {
                      value 1;
                      description
                        "Configure server address";
                    }
                  }
                  description
                    "Specify peer/server";
                }

                leaf version {
                  type uint32 {
                    range "2..4";
                  }
                  description
                    "Configure NTP version";
                }

                leaf key {
                  type uint32 {
                    range "1..65535";
                  }
                  description
                    "Configure peer authentication key";
                }

                leaf minpoll {
                  type uint32 {
                    range "4..5|7..17";
                  }
                  description
                    "Configure minimum polling rate";
                }

                leaf maxpoll {
                  type uint32 {
                    range "4..9|11..17";
                  }
                  description
                    "Configure maximum polling rate";
                }

                container prefer {
                  presence
                    "Indicates a prefer node is configured.";
                  description
                    "Prefer this peer when possible";
                }  // container prefer

                container burst {
                  presence
                    "Indicates a burst node is configured.";
                  description
                    "Use burst mode";
                }  // container burst

                container iburst {
                  presence
                    "Indicates a iburst node is configured.";
                  description
                    "Use initial burst mode";
                }  // container iburst

                leaf source {
                  type xr:Interface-name;
                  description
                    "Interface for source address";
                }
              }  // list ipv4-peer-server
            }  // container ipv4

            container ipv6 {
              description
                "Specify IPv6 address";
              list ipv6-peer-server {
                must
                  "address = ipv6-address";
                key "address type";
                description
                  "Specify IPv6 address";
                leaf address {
                  type inet:ipv6-address-no-zone;
                  description
                    "Peer/server address";
                }

                leaf type {
                  type enumeration {
                    enum "peer" {
                      value 0;
                      description
                        "Configure peer address";
                    }
                    enum "server" {
                      value 1;
                      description
                        "Configure server address";
                    }
                  }
                  description
                    "Specify peer/server";
                }

                leaf version {
                  type uint32 {
                    range "2..4";
                  }
                  description
                    "Configure NTP version";
                }

                leaf key {
                  type uint32 {
                    range "1..65535";
                  }
                  description
                    "Configure peer authentication key";
                }

                leaf minpoll {
                  type uint32 {
                    range "4..5|7..17";
                  }
                  description
                    "Configure minimum polling rate";
                }

                leaf maxpoll {
                  type uint32 {
                    range "4..9|11..17";
                  }
                  description
                    "Configure maximum polling rate";
                }

                container prefer {
                  presence
                    "Indicates a prefer node is configured.";
                  description
                    "Prefer this peer when possible";
                }  // container prefer

                container burst {
                  presence
                    "Indicates a burst node is configured.";
                  description
                    "Use burst mode";
                }  // container burst

                container iburst {
                  presence
                    "Indicates a iburst node is configured.";
                  description
                    "Use initial burst mode";
                }  // container iburst

                leaf source {
                  type xr:Interface-name;
                  description
                    "Interface for source address";
                }

                leaf ipv6-address {
                  type inet:ipv6-address-no-zone;
                  mandatory true;
                  description
                    "IPv6 address (must be same as key node 'address')";
                }
              }  // list ipv6-peer-server
            }  // container ipv6
          }  // list vrf
        }  // container vrfs
      }  // container peer-server

      container trusted-keys {
        description
          "Key numbers for trusted time sources";
        list trusted-key {
          key "key-number";
          description
            "Key numbers for trusted time sources";
          leaf key-number {
            type uint32 {
              range "1..65535";
            }
            description
              "Key numbers for trusted time sources";
          }
        }  // list trusted-key
      }  // container trusted-keys

      container update-calendar {
        presence
          "Indicates a update-calendar node is configured.";
        description
          "Periodically update calendar with NTP time";
      }  // container update-calendar

      container log-internal-sync {
        presence
          "Indicates a log-internal-sync node is configured.";
        description
          "Logs internal synchronization changes";
      }  // container log-internal-sync

      container passive {
        presence
          "Indicates a passive node is configured.";
        description
          "Enable the passive associations";
      }  // container passive

      container source {
        description
          "Configure default interface";
        leaf interface-name {
          type xr:Interface-name;
          description "default interface";
        }

        container vrfs {
          description
            "Specify non-default VRF";
          list vrf {
            key "vrf-name";
            description
              "Specify non-default VRF";
            leaf vrf-name {
              type xr:Cisco-ios-xr-string {
                length "1..1024";
              }
              description
                "Specify non-default VRF";
            }

            leaf interface-name {
              type xr:Interface-name;
              mandatory true;
              description
                "default interface for the VRF";
            }
          }  // list vrf
        }  // container vrfs
      }  // container source

      container admin-plane {
        presence
          "Indicates a admin-plane node is configured.";
        description
          "Configure admin plane as peer/server";
        leaf version {
          type uint32 {
            range "1..4";
          }
          description
            "Configure NTP version";
        }

        leaf key {
          type uint32 {
            range "1..65535";
          }
          description
            "Configure peer authentication key";
        }

        leaf minpoll {
          type uint32 {
            range "4..17";
          }
          description
            "Configure minimum polling rate";
        }

        leaf maxpoll {
          type uint32 {
            range "4..17";
          }
          description
            "Configure maximum polling rate";
        }

        container prefer {
          presence
            "Indicates a prefer node is configured.";
          description
            "Prefer this peer when possible";
        }  // container prefer

        container burst {
          presence
            "Indicates a burst node is configured.";
          description "Use burst mode";
        }  // container burst

        container iburst {
          presence
            "Indicates a iburst node is configured.";
          description
            "Use initial burst mode";
        }  // container iburst
      }  // container admin-plane
    }  // container ntp
  }  // module Cisco-IOS-XR-um-ntp-cfg