Bug fix for ONOS-4491

Change-Id: I5088b3ec219fd2b44e74c9cbba70cbfb7addad84
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
index 504882b..1931e8c 100644
--- a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
@@ -371,7 +371,8 @@
 
             List<PortDescription> descs = ports.stream().map(
               port -> (!(Device.Type.ROADM.equals(device.type()) ||
-                        (Device.Type.OTN.equals(device.type())))) ?
+                        (Device.Type.OTN.equals(device.type())) ||
+                        (Device.Type.FIBER_SWITCH.equals(device.type())))) ?
                   new DefaultPortDescription(port.number(), false,
                           port.type(), port.portSpeed()) :
                       OpticalPortOperator.descriptionOf(port, false)