module Cisco-IOS-XR-ipv6-io-cfg {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XR-ipv6-io-cfg";

    prefix ipv6-io-cfg;

    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 ipv6-io package configuration.
     
     This module contains definitions
     for the following management objects:
       ipv6-configuration: IPv6 Configuration Data
     
     Copyright (c) 2013-2019 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2019-10-31" {
      description "Added mandatory nodes.";
    }

    revision "2019-04-05" {
      description
        "Establish semantic version baseline.";
    }

    revision "2016-05-10" {
      description "Added top container.";
    }

    revision "2015-11-09" {
      description "IOS XR 6.0 revision.";
    }

    semver:module-version "2.0.0";
    semver:module-version "1.0.0";

    container ipv6-configuration {
      description "IPv6 Configuration Data";
      container ipv6-assembler {
        description
          "IPv6 fragmented packet assembler";
        leaf timeout {
          type uint32 {
            range "1..120";
          }
          units "second";
          description
            "Number of seconds an assembly queue will hold
           before timeout";
        }

        leaf max-packets {
          type uint32 {
            range "1..50";
          }
          units "percentage";
          description
            "Maxinum packets allowed in assembly queues (in
           percent)";
        }
      }  // container ipv6-assembler

      container ipv6icmp {
        presence
          "Indicates a ipv6icmp node is configured.";
        description
          "Configure IPv6 ICMP parameters";
        leaf error-interval {
          type uint32 {
            range "0..2147483647";
          }
          units "millisecond";
          mandatory true;
          description
            "Interval between tokens in milliseconds";
        }

        leaf bucket-size {
          type uint32 {
            range "1..200";
          }
          mandatory true;
          description "Bucket size";
        }
      }  // container ipv6icmp

      leaf ipv6-pmtu-time-out {
        type uint32 {
          range "1..15";
        }
        units "minute";
        description
          "Configure IPv6 Path MTU timeout value in minutes";
      }

      leaf ipv6-source-route {
        type boolean;
        default "true";
        description
          "TRUE if enabled, FALSE if disabled";
      }

      leaf ipv6-pmtu-enable {
        type boolean;
        default "false";
        description
          "TRUE if enabled, FALSE if disabled";
      }

      leaf ipv6-hop-limit {
        type uint32 {
          range "1..255";
        }
        description
          "Configure IPv6 hop count limit";
      }
    }  // container ipv6-configuration
  }  // module Cisco-IOS-XR-ipv6-io-cfg