module cisco-xe-openconfig-vlan-ext {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/cisco-xe-openconfig-vlan-ext";

    prefix oc-vlan-ext;

    import openconfig-vlan {
      prefix oc-vlan;
    }
    import openconfig-vlan-types {
      prefix oc-vlan-types;
    }
    import openconfig-interfaces {
      prefix oc-if;
    }

    organization "Cisco Systems";

    description "Augmentation for oc-vlan";

    revision "2017-06-14" {
      description
        "Initial Draft to add a new oper only list for default vlans";
    }


    grouping default-vlans {
      description
        "Top-level grouping for default vlans";
      list default-vlan {
        key "vlan-id";
        config false;
        description
          "Default VLANs keyed by id";
        leaf vlan-id {
          type uint16 {
            range "1 | 1002..1005";
          }
          description
            "Valid default vlans are 1,1002,1003,1004,1005";
        }

        leaf name {
          type string;
          description "VLAN name";
        }

        leaf status {
          type enumeration {
            enum "ACTIVE" {
              value 0;
              description "VLAN is active";
            }
            enum "SUSPENDED" {
              value 1;
              description
                "VLAN is inactive / suspended";
            }
          }
          default "ACTIVE";
          description
            "Admin state of the VLAN";
        }

        list ports {
          config false;
          description
            "List of interfaces / subinterfaces associated with the VLAN.";
          leaf interface {
            type string;
            description
              "Reference to a base interface.
If a reference to a subinterface is required,
this leaf must be specified to indicate the base interface.";
          }

          leaf subinterface {
            type uint32;
            description
              "Reference to a subinterface -- this requires the base
interface to be specified using the interface leaf in
this container.  If only a reference to a base interface
is requuired, this leaf should not be set.";
          }
        }  // list ports
      }  // list default-vlan
    }  // grouping default-vlans

    augment /oc-vlan:vlans {
      uses default-vlans;
    }
  }  // module cisco-xe-openconfig-vlan-ext