module cisco-xe-openconfig-system-ext {

    yang-version 1;

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

    prefix oc-system-cisco;

    import openconfig-system {
      prefix oc-sys;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }

    organization "Cisco";

    contact "www.cisco.com";

    description
      "Cisco augmentation to oc-system model.";

    revision "2018-03-21" {
      description
        "Removed augmented source interface leafs Add optional vrf configuration for the logging source interface";
    }

    revision "2018-01-11" {
      description
        "Moved radius and tacacs source interface leafs to top of servers list";
    }

    revision "2017-12-16" {
      description
        "Added radius and tacacs source interface leafs";
    }

    revision "2017-11-16" {
      description
        "Added support for end user license agreement";
    }

    revision "2017-10-19" {
      description
        "Added support ntp source interface configuration and config state";
    }

    oc-ext:openconfig-version "1.0.2";

    augment /oc-sys:system/oc-sys:logging/oc-sys:remote-servers/oc-sys:remote-server/oc-sys:config {
      description
        "vrf if used by the interface forwarding logging messages";
      leaf vrf {
        type string;
      }
    }

    augment /oc-sys:system/oc-sys:logging/oc-sys:remote-servers/oc-sys:remote-server/oc-sys:state {
      description
        "vrf if used by the interface forwarding logging messages";
      leaf vrf {
        type string;
      }
    }

    augment /oc-sys:system/oc-sys:state {
      container license {
        leaf eula {
          type string;
          description
            "The end user license agreement text";
        }
      }  // container license
    }
  }  // module cisco-xe-openconfig-system-ext