diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/ClusterViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/ClusterViewMessageHandler.java
index 980d7f6..7243818 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/ClusterViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/ClusterViewMessageHandler.java
@@ -19,6 +19,7 @@
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.google.common.collect.ImmutableSet;
+import org.onlab.packet.IpAddress;
 import org.onosproject.cluster.ClusterService;
 import org.onosproject.cluster.ControllerNode;
 import org.onosproject.cluster.NodeId;
@@ -170,27 +171,31 @@
 
         @Override
         public void process(ObjectNode payload) {
+            ObjectNode rootNode = objectNode();
+            ObjectNode data = objectNode();
+            ArrayNode devices = arrayNode();
 
             String id = string(payload, ID);
             ClusterService cs = get(ClusterService.class);
             ControllerNode node = cs.getNode(new NodeId(id));
+            if (node != null) {
+                IpAddress nodeIp = node.ip();
+                List<Device> deviceList = populateDevices(node);
 
-            ObjectNode data = objectNode();
-            ArrayNode devices = arrayNode();
-            List<Device> deviceList = populateDevices(node);
+                data.put(ID, node.id().toString());
+                data.put(IP, nodeIp != null ? nodeIp.toString() : node.host());
 
-            data.put(ID, node.id().toString());
-            data.put(IP, node.ip().toString());
+                for (Device d : deviceList) {
+                    devices.add(deviceData(d));
+                }
 
-            for (Device d : deviceList) {
-                devices.add(deviceData(d));
+            } else {
+                data.put(ID, "NONE");
+                data.put(IP, "NONE");
             }
-
             data.set(DEVICES, devices);
 
             //TODO put more detail info to data
-
-            ObjectNode rootNode = objectNode();
             rootNode.set(DETAILS, data);
             sendMessage(CLUSTER_DETAILS_RESP, rootNode);
         }
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
index 3bd4985..79a335f 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
@@ -261,10 +261,11 @@
     // Produces a cluster instance message to the client.
     protected ObjectNode instanceMessage(ClusterEvent event, String msgType) {
         ControllerNode node = event.subject();
+        IpAddress nodeIp = node.ip();
         int switchCount = services.mastership().getDevicesOf(node.id()).size();
         ObjectNode payload = objectNode()
                 .put("id", node.id().toString())
-                .put("ip", node.ip().toString())
+                .put("ip", nodeIp != null ? nodeIp.toString() : node.host())
                 .put("online", services.cluster().getState(node.id()).isActive())
                 .put("ready", services.cluster().getState(node.id()).isReady())
                 .put("uiAttached", node.equals(services.cluster().getLocalNode()))
@@ -272,7 +273,7 @@
 
         ArrayNode labels = arrayNode();
         labels.add(node.id().toString());
-        labels.add(node.ip().toString());
+        labels.add(nodeIp != null ? nodeIp.toString() : node.host());
 
         // Add labels, props and stuff the payload into envelope.
         payload.set("labels", labels);
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/UiWebSocket.java b/web/gui/src/main/java/org/onosproject/ui/impl/UiWebSocket.java
index 2e7e643..0ed48ad 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/UiWebSocket.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/UiWebSocket.java
@@ -22,6 +22,7 @@
 import org.eclipse.jetty.websocket.api.WebSocketAdapter;
 import org.onlab.osgi.ServiceDirectory;
 import org.onlab.osgi.ServiceNotFoundException;
+import org.onlab.packet.IpAddress;
 import org.onosproject.cluster.ClusterService;
 import org.onosproject.cluster.ControllerNode;
 import org.onosproject.ui.GlyphConstants;
@@ -438,9 +439,10 @@
         ArrayNode instances = arrayNode();
 
         for (ControllerNode node : service.getNodes()) {
+            IpAddress nodeIp = node.ip();
             ObjectNode instance = objectNode()
                     .put(ID, node.id().toString())
-                    .put(IP, node.ip().toString())
+                    .put(IP, nodeIp != null ? nodeIp.toString() : node.host())
                     .put(GlyphConstants.UI_ATTACHED,
                          node.equals(service.getLocalNode()));
             instances.add(instance);
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java b/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
index 0ef6faf..8ae6e6d 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
@@ -201,13 +201,7 @@
 
     private ObjectNode json(UiClusterMember member, boolean isUiAttached) {
         int switchCount = mastershipService.getDevicesOf(member.id()).size();
-        ControllerNode.State state = clusterService.getState(member.id());
-        return objectNode()
-                .put("id", member.id().toString())
-                .put("ip", member.ip().toString())
-                .put("online", state.isActive())
-                .put("ready", state.isReady())
-                .put("uiAttached", isUiAttached)
+        return jsonCommon(member).put("uiAttached", isUiAttached)
                 .put("switches", switchCount);
     }
 
@@ -637,14 +631,26 @@
     }
 
     private ObjectNode json(UiClusterMember member) {
+        return jsonCommon(member).put(GlyphConstants.UI_ATTACHED,
+                clusterService.getLocalNode().equals(member.backingNode()));
+    }
+
+    private ObjectNode jsonCommon(UiClusterMember member) {
         ControllerNode.State state = clusterService.getState(member.id());
+        ControllerNode node = member.backingNode();
+        if (node != null) {
+            IpAddress nodeIp = member.backingNode().ip();
+            return objectNode()
+                    .put("id", member.idAsString())
+                    .put("ip", nodeIp != null ? nodeIp.toString() : node.host())
+                    .put("online", state.isActive())
+                    .put("ready", state.isReady());
+        }
         return objectNode()
                 .put("id", member.idAsString())
-                .put("ip", member.ip().toString())
-                .put("online", state.isActive())
-                .put("ready", state.isReady())
-                .put(GlyphConstants.UI_ATTACHED,
-                     member.backingNode().equals(clusterService.getLocalNode()));
+                .put("ip", "NONE")
+                .put("online", false)
+                .put("ready", false);
     }
 
     private ObjectNode jsonClosedRegion(String ridStr, UiRegion region) {