diff --git a/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltFwdlConfig.java b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltFwdlConfig.java
new file mode 100644
index 0000000..221c5b1
--- /dev/null
+++ b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/behaviour/VoltFwdlConfig.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.drivers.fujitsu.behaviour;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.driver.HandlerBehaviour;
+
+/**
+ * Device behaviour to upgrade ONUs to new firmware.
+ */
+@Beta
+public interface VoltFwdlConfig extends HandlerBehaviour {
+
+    /**
+     * Upgrade firmware manually in an ONU in the device.
+     *
+     * @param target input data in string
+     */
+    String upgradeFirmwareOndemand(String target);
+
+}