diff --git a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkDeviceManagerTest.java b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkDeviceManagerTest.java
index 5de6190..ff53d2e 100644
--- a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkDeviceManagerTest.java
+++ b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkDeviceManagerTest.java
@@ -40,6 +40,7 @@
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
 import org.onosproject.net.NetTestTools;
+import org.onosproject.net.Port;
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.device.DeviceEvent;
 import org.onosproject.net.device.DeviceListener;
@@ -380,6 +381,21 @@
         Set<VirtualPort> virtualPorts = manager.getVirtualPorts(virtualNetwork.id(), device2.id());
         assertNotNull("The virtual port set should not be null", virtualPorts);
         assertEquals("The virtual port set size did not match.", 2, virtualPorts.size());
+        virtualPorts.forEach(vp -> assertFalse("Initial virtual port state should be disabled", vp.isEnabled()));
+
+        // verify change state of virtual port (disabled -> enabled)
+        manager.updatePortState(virtualNetwork.id(), device2.id(), PortNumber.portNumber(1), true);
+        Port changedPort = deviceService.getPort(device2.id(), PortNumber.portNumber(1));
+        assertNotNull("The changed virtual port should not be null", changedPort);
+        assertEquals("Virtual port state should be enabled", true, changedPort.isEnabled());
+        expectedEventTypes.add(DeviceEvent.Type.PORT_UPDATED);
+
+        // verify change state of virtual port (disabled -> disabled)
+        manager.updatePortState(virtualNetwork.id(), device2.id(), PortNumber.portNumber(2), false);
+        changedPort = deviceService.getPort(device2.id(), PortNumber.portNumber(2));
+        assertNotNull("The changed virtual port should not be null", changedPort);
+        assertEquals("Virtual port state should be disabled", false, changedPort.isEnabled());
+        // no VIRTUAL_PORT_UPDATED event is expected - the requested state (disabled) is same as previous state.
 
         // remove 2 virtual ports
         for (VirtualPort virtualPort : virtualPorts) {
diff --git a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkManagerTest.java b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkManagerTest.java
index 7f5a5fe..9ea8916 100644
--- a/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkManagerTest.java
+++ b/incubator/net/src/test/java/org/onosproject/incubator/net/virtual/impl/VirtualNetworkManagerTest.java
@@ -553,6 +553,12 @@
         manager.createVirtualLink(virtualNetwork1.id(), src, dst);
     }
 
+    private VirtualPort getPort(NetworkId networkId, DeviceId deviceId, PortNumber portNumber) {
+        Set<VirtualPort> virtualPorts = manager.getVirtualPorts(networkId, deviceId);
+        return  virtualPorts.stream().filter(virtualPort -> virtualPort.number().equals(portNumber))
+                .findFirst().orElse(null);
+    }
+
     /**
      * Tests add, bind and remove of virtual ports.
      */
@@ -580,6 +586,21 @@
         Set<VirtualPort> virtualPorts = manager.getVirtualPorts(virtualNetwork1.id(), virtualDevice.id());
         assertNotNull("The virtual port set should not be null", virtualPorts);
         assertEquals("The virtual port set size did not match.", 2, virtualPorts.size());
+        virtualPorts.forEach(vp -> assertFalse("Initial virtual port state should be disabled", vp.isEnabled()));
+
+        // verify change state of virtual port (disabled -> enabled)
+        manager.updatePortState(virtualNetwork1.id(), virtualDevice.id(), PortNumber.portNumber(1), true);
+        VirtualPort changedPort = getPort(virtualNetwork1.id(), virtualDevice.id(), PortNumber.portNumber(1));
+        assertNotNull("The changed virtual port should not be null", changedPort);
+        assertEquals("Virtual port state should be enabled", true, changedPort.isEnabled());
+        expectedEventTypes.add(VirtualNetworkEvent.Type.VIRTUAL_PORT_UPDATED);
+
+        // verify change state of virtual port (disabled -> disabled)
+        manager.updatePortState(virtualNetwork1.id(), virtualDevice.id(), PortNumber.portNumber(2), false);
+        changedPort = getPort(virtualNetwork1.id(), virtualDevice.id(), PortNumber.portNumber(2));
+        assertNotNull("The changed virtual port should not be null", changedPort);
+        assertEquals("Virtual port state should be disabled", false, changedPort.isEnabled());
+        // no VIRTUAL_PORT_UPDATED event is expected - the requested state (disabled) is same as previous state.
 
         for (VirtualPort virtualPort : virtualPorts) {
             manager.removeVirtualPort(virtualNetwork1.id(),