diff --git a/apps/foo/pom.xml b/apps/foo/pom.xml
index 1a62f73..6109263 100644
--- a/apps/foo/pom.xml
+++ b/apps/foo/pom.xml
@@ -24,6 +24,11 @@
         </dependency>
         <dependency>
             <groupId>org.onlab.onos</groupId>
+            <artifactId>onlab-osgi</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onlab.onos</groupId>
             <artifactId>onlab-nio</artifactId>
             <version>${project.version}</version>
         </dependency>
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/NettyEchoHandler.java b/apps/foo/src/main/java/org/onlab/onos/foo/NettyEchoHandler.java
new file mode 100644
index 0000000..1049a6d
--- /dev/null
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/NettyEchoHandler.java
@@ -0,0 +1,23 @@
+package org.onlab.onos.foo;
+
+import java.io.IOException;
+
+import org.onlab.netty.Message;
+import org.onlab.netty.MessageHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * Message handler that echos the message back to the sender.
+ */
+public class NettyEchoHandler implements MessageHandler {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Override
+    public void handle(Message message) throws IOException {
+        //log.info("Received message. Echoing it back to the sender.");
+        message.respond(message.payload());
+    }
+}
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/NettyLoggingHandler.java b/apps/foo/src/main/java/org/onlab/onos/foo/NettyLoggingHandler.java
new file mode 100644
index 0000000..bc10c82
--- /dev/null
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/NettyLoggingHandler.java
@@ -0,0 +1,19 @@
+package org.onlab.onos.foo;
+
+import org.onlab.netty.Message;
+import org.onlab.netty.MessageHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * A MessageHandler that simply logs the information.
+ */
+public class NettyLoggingHandler implements MessageHandler {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Override
+    public void handle(Message message) {
+        log.info("Received message. Payload has {} bytes", message.payload().length);
+    }
+}
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClient.java b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClient.java
index 8f94ec1..a397434 100644
--- a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClient.java
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClient.java
@@ -2,7 +2,6 @@
 
 import java.io.IOException;
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 import org.onlab.metrics.MetricsComponent;
@@ -35,28 +34,35 @@
         MetricsManager metrics = new MetricsManager();
         messaging.activate();
         metrics.activate();
-        MetricsFeature feature = new MetricsFeature("timers");
+        MetricsFeature feature = new MetricsFeature("latency");
         MetricsComponent component = metrics.registerComponent("NettyMessaging");
-        Timer sendAsyncTimer = metrics.createTimer(component, feature, "AsyncSender");
-        final int warmup = 100;
+
+        final int warmup = 10000;
         for (int i = 0; i < warmup; i++) {
+            messaging.sendAsync(new Endpoint("localhost", 8081), "simple", "Hello World".getBytes());
+            Response response = messaging
+                    .sendAndReceive(new Endpoint("localhost", 8081), "echo",
+                            "Hello World".getBytes());
+        }
+
+        Timer sendAsyncTimer = metrics.createTimer(component, feature, "AsyncSender");
+        Timer sendAndReceiveTimer = metrics.createTimer(component, feature, "SendAndReceive");
+
+        final int iterations = 10000000;
+        for (int i = 0; i < iterations; i++) {
             Timer.Context context = sendAsyncTimer.time();
-            messaging.sendAsync(new Endpoint("localhost", 8080), "simple", "Hello World".getBytes());
+            messaging.sendAsync(new Endpoint("localhost", 8081), "simple", "Hello World".getBytes());
             context.stop();
         }
-        metrics.registerMetric(component, feature, "AsyncTimer", sendAsyncTimer);
 
-        Timer sendAndReceiveTimer = metrics.createTimer(component, feature, "SendAndReceive");
-        final int iterations = 1000000;
         for (int i = 0; i < iterations; i++) {
             Timer.Context context = sendAndReceiveTimer.time();
             Response response = messaging
-                    .sendAndReceive(new Endpoint("localhost", 8080), "echo",
+                    .sendAndReceive(new Endpoint("localhost", 8081), "echo",
                                     "Hello World".getBytes());
-            System.out.println("Got back:" + new String(response.get(2, TimeUnit.SECONDS)));
+            // System.out.println("Got back:" + new String(response.get(2, TimeUnit.SECONDS)));
             context.stop();
         }
-        metrics.registerMetric(component, feature, "AsyncTimer", sendAndReceiveTimer);
     }
 
     public static class TestNettyMessagingService extends NettyMessagingService {
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClientCommand.java b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClientCommand.java
index 8a603e9..3423b23 100644
--- a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClientCommand.java
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyClientCommand.java
@@ -13,6 +13,7 @@
         description = "Starts the simple Netty client")
 public class SimpleNettyClientCommand extends AbstractShellCommand {
 
+    //FIXME: replace these arguments with proper ones needed for the test.
     @Argument(index = 0, name = "serverIp", description = "Server IP address",
             required = false, multiValued = false)
     String serverIp = "127.0.0.1";
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServer.java b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServer.java
index 25ac59b..c0eb014 100644
--- a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServer.java
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServer.java
@@ -1,6 +1,5 @@
 package org.onlab.onos.foo;
 
-import org.onlab.netty.EchoHandler;
 import org.onlab.netty.NettyMessagingService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -19,10 +18,10 @@
             }
 
         public static void startStandalone(String[] args) throws Exception {
-            NettyMessagingService server = new NettyMessagingService(8080);
+            NettyMessagingService server = new NettyMessagingService(8081);
             server.activate();
-            server.registerHandler("simple", new org.onlab.netty.LoggingHandler());
-            server.registerHandler("echo", new EchoHandler());
+            server.registerHandler("simple", new NettyLoggingHandler());
+            server.registerHandler("echo", new NettyEchoHandler());
         }
     }
 
diff --git a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServerCommand.java b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServerCommand.java
index 2f82da0..17b2586 100644
--- a/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServerCommand.java
+++ b/apps/foo/src/main/java/org/onlab/onos/foo/SimpleNettyServerCommand.java
@@ -9,10 +9,11 @@
 /**
  * Starts the Simple Netty server.
  */
-@Command(scope = "onos", name = "test-netty-server",
+@Command(scope = "onos", name = "simple-netty-server",
          description = "Starts the simple netty server")
 public class SimpleNettyServerCommand extends AbstractShellCommand {
 
+    //FIXME: Replace these with parameters for
     @Argument(index = 0, name = "serverIp", description = "Server IP address",
               required = false, multiValued = false)
     String serverIp = "127.0.0.1";
diff --git a/apps/foo/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/apps/foo/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 93bd020..f8ee2b8 100644
--- a/apps/foo/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/apps/foo/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -7,6 +7,12 @@
         <command>
             <action class="org.onlab.onos.foo.TestIOServerCommand"/>
         </command>
+        <command>
+            <action class="org.onlab.onos.foo.SimpleNettyServerCommand"/>
+        </command>
+        <command>
+            <action class="org.onlab.onos.foo.SimpleNettyClientCommand"/>
+        </command>
     </command-bundle>
 
 </blueprint>
diff --git a/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java b/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
index 7d09cca..2cd6919 100644
--- a/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
+++ b/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
@@ -1,12 +1,20 @@
 package org.onlab.onos.net.device.impl;
 
 import com.google.common.collect.Sets;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Ignore;
 import org.junit.Test;
+import org.onlab.onos.cluster.ClusterEventListener;
+import org.onlab.onos.cluster.ClusterService;
+import org.onlab.onos.cluster.ControllerNode;
+import org.onlab.onos.cluster.DefaultControllerNode;
 import org.onlab.onos.cluster.MastershipServiceAdapter;
+import org.onlab.onos.cluster.MastershipTerm;
+import org.onlab.onos.cluster.MastershipTermService;
 import org.onlab.onos.cluster.NodeId;
+import org.onlab.onos.cluster.ControllerNode.State;
 import org.onlab.onos.event.Event;
 import org.onlab.onos.event.impl.TestEventDispatcher;
 import org.onlab.onos.net.Device;
@@ -27,7 +35,9 @@
 import org.onlab.onos.net.device.PortDescription;
 import org.onlab.onos.net.provider.AbstractProvider;
 import org.onlab.onos.net.provider.ProviderId;
+import org.onlab.onos.store.ClockProviderService;
 import org.onlab.onos.store.trivial.impl.SimpleDeviceStore;
+import org.onlab.packet.IpPrefix;
 
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -56,6 +66,8 @@
     private static final PortNumber P1 = PortNumber.portNumber(1);
     private static final PortNumber P2 = PortNumber.portNumber(2);
     private static final PortNumber P3 = PortNumber.portNumber(3);
+    private static final NodeId NID_LOCAL = new NodeId("local");
+    private static final IpPrefix LOCALHOST = IpPrefix.valueOf("127.0.0.1");
 
     private DeviceManager mgr;
 
@@ -75,6 +87,8 @@
         mgr.store = new SimpleDeviceStore();
         mgr.eventDispatcher = new TestEventDispatcher();
         mgr.mastershipService = new TestMastershipService();
+        mgr.clusterService = new TestClusterService();
+        mgr.clockProviderService = new TestClockProviderService();
         mgr.activate();
 
         service.addListener(listener);
@@ -273,6 +287,59 @@
         public MastershipRole requestRoleFor(DeviceId deviceId) {
             return MastershipRole.MASTER;
         }
+
+        @Override
+        public MastershipTermService requestTermService() {
+            return new MastershipTermService() {
+                @Override
+                public MastershipTerm getMastershipTerm(DeviceId deviceId) {
+                    // FIXME: just returning something not null
+                    return MastershipTerm.of(NID_LOCAL, 1);
+                }
+            };
+        }
     }
 
+    // code clone
+    private final class TestClusterService implements ClusterService {
+
+        ControllerNode local = new DefaultControllerNode(NID_LOCAL, LOCALHOST);
+
+        @Override
+        public ControllerNode getLocalNode() {
+            return local;
+        }
+
+        @Override
+        public Set<ControllerNode> getNodes() {
+            return null;
+        }
+
+        @Override
+        public ControllerNode getNode(NodeId nodeId) {
+            return null;
+        }
+
+        @Override
+        public State getState(NodeId nodeId) {
+            return null;
+        }
+
+        @Override
+        public void addListener(ClusterEventListener listener) {
+        }
+
+        @Override
+        public void removeListener(ClusterEventListener listener) {
+        }
+    }
+
+    private final class TestClockProviderService implements
+            ClockProviderService {
+
+        @Override
+        public void setMastershipTerm(DeviceId deviceId, MastershipTerm term) {
+            // TODO Auto-generated method stub
+        }
+    }
 }
diff --git a/core/net/src/test/java/org/onlab/onos/net/device/impl/DistributedDeviceManagerTest.java b/core/net/src/test/java/org/onlab/onos/net/device/impl/DistributedDeviceManagerTest.java
deleted file mode 100644
index 3f8c0a8..0000000
--- a/core/net/src/test/java/org/onlab/onos/net/device/impl/DistributedDeviceManagerTest.java
+++ /dev/null
@@ -1,346 +0,0 @@
-package org.onlab.onos.net.device.impl;
-
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Sets;
-import com.hazelcast.config.Config;
-import com.hazelcast.core.Hazelcast;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.onlab.onos.cluster.DefaultControllerNode;
-import org.onlab.onos.cluster.MastershipServiceAdapter;
-import org.onlab.onos.cluster.NodeId;
-import org.onlab.onos.event.Event;
-import org.onlab.onos.event.EventDeliveryService;
-import org.onlab.onos.event.impl.TestEventDispatcher;
-import org.onlab.onos.net.Device;
-import org.onlab.onos.net.DeviceId;
-import org.onlab.onos.net.MastershipRole;
-import org.onlab.onos.net.Port;
-import org.onlab.onos.net.PortNumber;
-import org.onlab.onos.net.device.DefaultDeviceDescription;
-import org.onlab.onos.net.device.DefaultPortDescription;
-import org.onlab.onos.net.device.DeviceAdminService;
-import org.onlab.onos.net.device.DeviceDescription;
-import org.onlab.onos.net.device.DeviceEvent;
-import org.onlab.onos.net.device.DeviceListener;
-import org.onlab.onos.net.device.DeviceProvider;
-import org.onlab.onos.net.device.DeviceProviderRegistry;
-import org.onlab.onos.net.device.DeviceProviderService;
-import org.onlab.onos.net.device.DeviceService;
-import org.onlab.onos.net.device.PortDescription;
-import org.onlab.onos.net.provider.AbstractProvider;
-import org.onlab.onos.net.provider.ProviderId;
-import org.onlab.onos.store.common.StoreManager;
-import org.onlab.onos.store.common.StoreService;
-import org.onlab.onos.store.common.TestStoreManager;
-import org.onlab.onos.store.device.impl.DistributedDeviceStore;
-import org.onlab.packet.IpPrefix;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.TimeUnit;
-
-import static org.junit.Assert.*;
-import static org.onlab.onos.net.Device.Type.SWITCH;
-import static org.onlab.onos.net.DeviceId.deviceId;
-import static org.onlab.onos.net.device.DeviceEvent.Type.*;
-
-// FIXME This test is slow starting up Hazelcast on each test cases.
-// FIXME DistributedDeviceStore should have it's own test cases.
-
-/**
- * Test codifying the device service & device provider service contracts.
- */
-public class DistributedDeviceManagerTest {
-
-    private static final ProviderId PID = new ProviderId("of", "foo");
-    private static final DeviceId DID1 = deviceId("of:foo");
-    private static final DeviceId DID2 = deviceId("of:bar");
-    private static final String MFR = "whitebox";
-    private static final String HW = "1.1.x";
-    private static final String SW1 = "3.8.1";
-    private static final String SW2 = "3.9.5";
-    private static final String SN = "43311-12345";
-
-    private static final PortNumber P1 = PortNumber.portNumber(1);
-    private static final PortNumber P2 = PortNumber.portNumber(2);
-    private static final PortNumber P3 = PortNumber.portNumber(3);
-
-    private static final DefaultControllerNode SELF
-        = new DefaultControllerNode(new NodeId("foobar"),
-                        IpPrefix.valueOf("127.0.0.1"));
-
-
-    private DeviceManager mgr;
-
-    protected StoreManager storeManager;
-    protected DeviceService service;
-    protected DeviceAdminService admin;
-    protected DeviceProviderRegistry registry;
-    protected DeviceProviderService providerService;
-    protected TestProvider provider;
-    protected TestListener listener = new TestListener();
-    private DistributedDeviceStore dstore;
-    private TestMastershipManager masterManager;
-    private EventDeliveryService eventService;
-
-    @Before
-    public void setUp() {
-        mgr = new DeviceManager();
-        service = mgr;
-        admin = mgr;
-        registry = mgr;
-        // TODO should find a way to clean Hazelcast instance without shutdown.
-        Config config = TestStoreManager.getTestConfig();
-
-        masterManager = new TestMastershipManager();
-
-        storeManager = new TestStoreManager(Hazelcast.newHazelcastInstance(config));
-        storeManager.activate();
-
-        dstore = new TestDistributedDeviceStore(storeManager);
-        dstore.activate();
-
-        mgr.store = dstore;
-        eventService = new TestEventDispatcher();
-        mgr.eventDispatcher = eventService;
-        mgr.mastershipService = masterManager;
-        mgr.activate();
-
-        service.addListener(listener);
-
-        provider = new TestProvider();
-        providerService = registry.register(provider);
-        assertTrue("provider should be registered",
-                   registry.getProviders().contains(provider.id()));
-    }
-
-    @After
-    public void tearDown() {
-        registry.unregister(provider);
-        assertFalse("provider should not be registered",
-                    registry.getProviders().contains(provider.id()));
-        service.removeListener(listener);
-        mgr.deactivate();
-
-        dstore.deactivate();
-        storeManager.deactivate();
-    }
-
-    private void connectDevice(DeviceId deviceId, String swVersion) {
-        DeviceDescription description =
-                new DefaultDeviceDescription(deviceId.uri(), SWITCH, MFR,
-                                             HW, swVersion, SN);
-        providerService.deviceConnected(deviceId, description);
-        assertNotNull("device should be found", service.getDevice(DID1));
-    }
-
-    @Test
-    public void deviceConnected() {
-        assertNull("device should not be found", service.getDevice(DID1));
-        connectDevice(DID1, SW1);
-        validateEvents(DEVICE_ADDED);
-
-        assertEquals("only one device expected", 1, Iterables.size(service.getDevices()));
-        Iterator<Device> it = service.getDevices().iterator();
-        assertNotNull("one device expected", it.next());
-        assertFalse("only one device expected", it.hasNext());
-
-        assertEquals("incorrect device count", 1, service.getDeviceCount());
-        assertTrue("device should be available", service.isAvailable(DID1));
-    }
-
-    @Test
-    public void deviceDisconnected() {
-        connectDevice(DID1, SW1);
-        connectDevice(DID2, SW1);
-        validateEvents(DEVICE_ADDED, DEVICE_ADDED);
-        assertTrue("device should be available", service.isAvailable(DID1));
-
-        // Disconnect
-        providerService.deviceDisconnected(DID1);
-        assertNotNull("device should not be found", service.getDevice(DID1));
-        assertFalse("device should not be available", service.isAvailable(DID1));
-        validateEvents(DEVICE_AVAILABILITY_CHANGED);
-
-        // Reconnect
-        connectDevice(DID1, SW1);
-        validateEvents(DEVICE_AVAILABILITY_CHANGED);
-
-        assertEquals("incorrect device count", 2, service.getDeviceCount());
-    }
-
-    @Test
-    public void deviceUpdated() {
-        connectDevice(DID1, SW1);
-        validateEvents(DEVICE_ADDED);
-
-        connectDevice(DID1, SW2);
-        validateEvents(DEVICE_UPDATED);
-    }
-
-    @Test
-    public void getRole() {
-        connectDevice(DID1, SW1);
-        assertEquals("incorrect role", MastershipRole.MASTER, service.getRole(DID1));
-    }
-
-    @Test
-    public void updatePorts() {
-        connectDevice(DID1, SW1);
-        List<PortDescription> pds = new ArrayList<>();
-        pds.add(new DefaultPortDescription(P1, true));
-        pds.add(new DefaultPortDescription(P2, true));
-        pds.add(new DefaultPortDescription(P3, true));
-        providerService.updatePorts(DID1, pds);
-        validateEvents(DEVICE_ADDED, PORT_ADDED, PORT_ADDED, PORT_ADDED);
-        pds.clear();
-
-        pds.add(new DefaultPortDescription(P1, false));
-        pds.add(new DefaultPortDescription(P3, true));
-        providerService.updatePorts(DID1, pds);
-        validateEvents(PORT_UPDATED, PORT_REMOVED);
-    }
-
-    @Test
-    public void updatePortStatus() {
-        connectDevice(DID1, SW1);
-        List<PortDescription> pds = new ArrayList<>();
-        pds.add(new DefaultPortDescription(P1, true));
-        pds.add(new DefaultPortDescription(P2, true));
-        providerService.updatePorts(DID1, pds);
-        validateEvents(DEVICE_ADDED, PORT_ADDED, PORT_ADDED);
-
-        providerService.portStatusChanged(DID1, new DefaultPortDescription(P1, false));
-        validateEvents(PORT_UPDATED);
-        providerService.portStatusChanged(DID1, new DefaultPortDescription(P1, false));
-        assertTrue("no events expected", listener.events.isEmpty());
-    }
-
-    @Test
-    public void getPorts() {
-        connectDevice(DID1, SW1);
-        List<PortDescription> pds = new ArrayList<>();
-        pds.add(new DefaultPortDescription(P1, true));
-        pds.add(new DefaultPortDescription(P2, true));
-        providerService.updatePorts(DID1, pds);
-        validateEvents(DEVICE_ADDED, PORT_ADDED, PORT_ADDED);
-        assertEquals("wrong port count", 2, service.getPorts(DID1).size());
-
-        Port port = service.getPort(DID1, P1);
-        assertEquals("incorrect port", P1, service.getPort(DID1, P1).number());
-        assertEquals("incorrect state", true, service.getPort(DID1, P1).isEnabled());
-    }
-
-    @Test
-    public void removeDevice() {
-        connectDevice(DID1, SW1);
-        connectDevice(DID2, SW2);
-        assertEquals("incorrect device count", 2, service.getDeviceCount());
-        admin.removeDevice(DID1);
-        validateEvents(DEVICE_ADDED, DEVICE_ADDED, DEVICE_REMOVED);
-        assertNull("device should not be found", service.getDevice(DID1));
-        assertNotNull("device should be found", service.getDevice(DID2));
-        assertEquals("incorrect device count", 1, service.getDeviceCount());
-    }
-
-    protected void validateEvents(Enum... types) {
-        for (Enum type : types) {
-            try {
-                Event event = listener.events.poll(1, TimeUnit.SECONDS);
-                assertNotNull("Timed out waiting for " + event, event);
-                assertEquals("incorrect event type", type, event.type());
-            } catch (InterruptedException e) {
-                fail("Unexpected interrupt");
-            }
-        }
-        assertTrue("Unexpected events left", listener.events.isEmpty());
-        listener.events.clear();
-    }
-
-
-    private class TestProvider extends AbstractProvider implements DeviceProvider {
-        private Device deviceReceived;
-        private MastershipRole roleReceived;
-
-        public TestProvider() {
-            super(PID);
-        }
-
-        @Override
-        public void triggerProbe(Device device) {
-        }
-
-        @Override
-        public void roleChanged(Device device, MastershipRole newRole) {
-            deviceReceived = device;
-            roleReceived = newRole;
-        }
-    }
-
-    private static class TestListener implements DeviceListener {
-        final BlockingQueue<DeviceEvent> events = new LinkedBlockingQueue<>();
-
-        @Override
-        public void event(DeviceEvent event) {
-            events.add(event);
-        }
-    }
-
-    private class TestDistributedDeviceStore extends DistributedDeviceStore {
-
-        public TestDistributedDeviceStore(StoreService storeService) {
-            this.storeService = storeService;
-        }
-    }
-
-    private static class TestMastershipManager extends MastershipServiceAdapter {
-
-        private ConcurrentMap<DeviceId, NodeId> masters = new ConcurrentHashMap<>();
-
-        public TestMastershipManager() {
-            // SELF master of all initially
-            masters.put(DID1, SELF.id());
-            masters.put(DID1, SELF.id());
-        }
-        @Override
-        public MastershipRole getLocalRole(DeviceId deviceId) {
-            return MastershipRole.MASTER;
-        }
-
-        @Override
-        public Set<DeviceId> getDevicesOf(NodeId nodeId) {
-            HashSet<DeviceId> set = Sets.newHashSet();
-            for (Entry<DeviceId, NodeId> e : masters.entrySet()) {
-                if (e.getValue().equals(nodeId)) {
-                    set.add(e.getKey());
-                }
-            }
-            return set;
-        }
-
-        @Override
-        public MastershipRole requestRoleFor(DeviceId deviceId) {
-            if (SELF.id().equals(masters.get(deviceId))) {
-                return MastershipRole.MASTER;
-            } else {
-                return MastershipRole.STANDBY;
-            }
-        }
-
-        @Override
-        public void relinquishMastership(DeviceId deviceId) {
-            masters.remove(deviceId, SELF.id());
-        }
-    }
-}
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/impl/ClusterCommunicationManager.java b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/impl/ClusterCommunicationManager.java
index df0f169..c732c16 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/impl/ClusterCommunicationManager.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/messaging/impl/ClusterCommunicationManager.java
@@ -29,6 +29,7 @@
 import org.onlab.onos.store.serializers.ClusterMessageSerializer;
 import org.onlab.onos.store.serializers.KryoPoolUtil;
 import org.onlab.onos.store.serializers.KryoSerializer;
+import org.onlab.onos.store.serializers.MessageSubjectSerializer;
 import org.onlab.util.KryoPool;
 import org.onlab.netty.Endpoint;
 import org.onlab.netty.Message;
@@ -66,7 +67,7 @@
                     .register(ClusterMessage.class, new ClusterMessageSerializer())
                     .register(ClusterMembershipEvent.class)
                     .register(byte[].class)
-                    .register(MessageSubject.class)
+                    .register(MessageSubject.class, new MessageSubjectSerializer())
                     .build()
                     .populate(1);
         }
@@ -123,7 +124,8 @@
         Endpoint nodeEp = new Endpoint(node.ip().toString(), node.tcpPort());
         try {
             log.info("sending...");
-            Response resp = messagingService.sendAndReceive(nodeEp, message.subject().value(), SERIALIZER.encode(message));
+            Response resp = messagingService.sendAndReceive(nodeEp,
+                    message.subject().value(), SERIALIZER.encode(message));
             resp.get(1, TimeUnit.SECONDS);
             log.info("sent...");
             return true;
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/ClusterMessageSerializer.java b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/ClusterMessageSerializer.java
index f4dadad..c0cefd6 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/ClusterMessageSerializer.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/ClusterMessageSerializer.java
@@ -3,7 +3,6 @@
 import org.onlab.onos.cluster.NodeId;
 import org.onlab.onos.store.cluster.messaging.ClusterMessage;
 import org.onlab.onos.store.cluster.messaging.MessageSubject;
-
 import com.esotericsoftware.kryo.Kryo;
 import com.esotericsoftware.kryo.Serializer;
 import com.esotericsoftware.kryo.io.Input;
@@ -11,6 +10,9 @@
 
 public final class ClusterMessageSerializer extends Serializer<ClusterMessage> {
 
+    /**
+     * Creates a serializer for {@link ClusterMessage}.
+     */
     public ClusterMessageSerializer() {
         // does not accept null
         super(false);
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java
index 9250076..516915e 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java
@@ -14,7 +14,7 @@
 public class MastershipBasedTimestampSerializer extends Serializer<MastershipBasedTimestamp> {
 
     /**
-     * Default constructor.
+     * Creates a serializer for {@link MastershipBasedTimestamp}.
      */
     public MastershipBasedTimestampSerializer() {
         // non-null, immutable
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MessageSubjectSerializer.java b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MessageSubjectSerializer.java
new file mode 100644
index 0000000..bb6b292
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MessageSubjectSerializer.java
@@ -0,0 +1,31 @@
+package org.onlab.onos.store.serializers;
+
+import org.onlab.onos.store.cluster.messaging.MessageSubject;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+
+public final class MessageSubjectSerializer extends Serializer<MessageSubject> {
+
+    /**
+     * Creates a serializer for {@link MessageSubject}.
+     */
+    public MessageSubjectSerializer() {
+        // non-null, immutable
+        super(false, true);
+    }
+
+
+    @Override
+    public void write(Kryo kryo, Output output, MessageSubject object) {
+        output.writeString(object.value());
+    }
+
+    @Override
+    public MessageSubject read(Kryo kryo, Input input,
+            Class<MessageSubject> type) {
+        return new MessageSubject(input.readString());
+    }
+}
diff --git a/features/features.xml b/features/features.xml
index 0a56d9a..b240917 100644
--- a/features/features.xml
+++ b/features/features.xml
@@ -153,6 +153,7 @@
              description="ONOS sample playground application">
         <feature>onos-api</feature>
         <bundle>mvn:org.onlab.onos/onos-app-foo/1.0.0-SNAPSHOT</bundle>
+        <bundle>mvn:org.onlab.onos/onlab-netty/1.0.0-SNAPSHOT</bundle>
     </feature>
 
     <feature name="onos-app-config" version="1.0.0"
diff --git a/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java b/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
index 357791e..eaf2a54 100644
--- a/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
+++ b/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
@@ -1,7 +1,5 @@
 package org.onlab.metrics;
 
-import java.io.File;
-import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
@@ -11,8 +9,8 @@
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
 
+import com.codahale.metrics.ConsoleReporter;
 import com.codahale.metrics.Counter;
-import com.codahale.metrics.CsvReporter;
 import com.codahale.metrics.Gauge;
 import com.codahale.metrics.Histogram;
 import com.codahale.metrics.Meter;
@@ -69,15 +67,14 @@
     /**
      * Default Reporter for this metrics manager.
      */
-    private final CsvReporter reporter;
+    private final ConsoleReporter reporter;
 
     public MetricsManager() {
         this.metricsRegistry = new MetricRegistry();
-        this.reporter = CsvReporter.forRegistry(metricsRegistry)
-                .formatFor(Locale.US)
+        this.reporter = ConsoleReporter.forRegistry(metricsRegistry)
                 .convertRatesTo(TimeUnit.SECONDS)
                 .convertDurationsTo(TimeUnit.MICROSECONDS)
-                .build(new File("/var/onos/log/metrics/"));
+                .build();
     }
 
     @Activate
diff --git a/utils/netty/src/main/java/org/onlab/netty/MessageEncoder.java b/utils/netty/src/main/java/org/onlab/netty/MessageEncoder.java
index c0a84df..d026dec 100644
--- a/utils/netty/src/main/java/org/onlab/netty/MessageEncoder.java
+++ b/utils/netty/src/main/java/org/onlab/netty/MessageEncoder.java
@@ -36,11 +36,6 @@
         // write preamble
         out.writeBytes(PREAMBLE);
 
-        try {
-            SERIALIZER.encode(message);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
         byte[] payload = SERIALIZER.encode(message);
 
         // write payload length