module cisco-xe-openconfig-spanning-tree-ext {

    yang-version 1;

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

    prefix oc-stp-ext;

    import openconfig-spanning-tree {
      prefix oc-stp;
    }
    import openconfig-spanning-tree-types {
      prefix oc-stp-types;
    }

    organization "Cisco Systems";

    description
      "Augment file for oc-spanning-tree";

    revision "2017-10-24" {
      description
        "Extended enum instances of STP port state and role";
    }

    revision "2017-07-17" {
      description
        "Initial Draft to change from leaf-list to leaf enabled-protocol";
    }

    deviation /oc-stp:stp/oc-stp:global/oc-stp:config/oc-stp:enabled-protocol {
      deviate not-supported;
    }
    deviation /oc-stp:stp/oc-stp:global/oc-stp:state/oc-stp:enabled-protocol {
      deviate not-supported;
    }

    identity BROKEN {
      base oc-stp-types:STP_PORT_STATE;
      description
        "Cisco added port state enum instance BROKEN";
    }

    identity INVALID {
      base oc-stp-types:STP_PORT_STATE;
      description
        "Cisco added port state enum instance INVALID";
    }

    identity MASTER {
      base oc-stp-types:STP_PORT_ROLE;
      description
        "Cisco added port role enum instance MASTER";
    }
  }  // module cisco-xe-openconfig-spanning-tree-ext