module huawei-isis-srv6 {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-isis-srv6";

    prefix isis-srv6;

    import huawei-network-instance {
      prefix ni;
    }
    import huawei-isis {
      prefix isis;
    }
    import huawei-srv6 {
      prefix srv6;
    }
    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
      "ISIS segment routing IPv6 management.";

    revision "2021-03-11" {
      description
        "Add container inter level protect etc.";
      reference
        "Huawei private.";

    }

    revision "2020-03-03" {
      description "Modify the description.";
      reference
        "Huawei private.";

    }

    revision "2020-02-04" {
      description "Modify the description.";
      reference
        "Huawei private.";

    }

    revision "2019-04-04" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "isis";

    augment /ni:network-instance/ni:instances/ni:instance/isis:isis/isis:sites/isis:site/isis:afs/isis:af {
      description
        "ISIS segment routing IPv6 augment to ISIS.";
      container srv6 {
        when
          "../../../../../../ni:name='_public_' and ../isis:type='afipv6' and (../../../isis:cost-style='wide' or ../../../isis:cost-style='transition'  or ../../../isis:cost-style='wtransition')";
        description
          "Configure ISIS segment routing IPv6.";
        container locators {
          description
            "List of segment routing IPv6 locator.";
          list locator {
            key "locator-name";
            description
              "Configure segment routing IPv6 locator.";
            leaf locator-name {
              type leafref {
                path
                  "/ni:network-instance/ni:instances/ni:instance/srv6:srv6/srv6:locators/srv6:locator/srv6:name";
              }
              description
                "Enable ISIS segment routing IPv6 with specified Locator.";
            }

            leaf auto-sid {
              type boolean;
              default "true";
              description
                "Enable/disable automatic application for SID.";
            }
          }  // list locator
        }  // container locators

        container avoid-microloop {
          when "../locators/locator";
          description
            "Configure IPv6 segment routing avoid microloop.";
          leaf enable {
            type boolean;
            default "false";
            description
              "Enable/disable IPv6 segment routing avoid microloop.";
          }

          leaf delay-value {
            type uint16 {
              range "1000..60000";
            }
            default "5000";
            description
              "Set the route delivery delay for IPv6 segment routing avoid microloop.";
          }
        }  // container avoid-microloop

        container inter-level-protect {
          when
            "../../isis:frr/isis:enable='true' and ../locators/locator";
          description
            "Configure Inter-Level-Protect.";
          leaf enable-level1 {
            type boolean;
            default "false";
            description
              "Enable/disable Level 1 Inter-Level-Protect.";
          }

          leaf preferred {
            type boolean;
            must
              "../enable-level1='true' or ../preferred='false'";
            default "false";
            description
              "Enable/disable Inter-Level-Protect Preferred.";
          }
        }  // container inter-level-protect
      }  // container srv6
    }
  }  // module huawei-isis-srv6