diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java
new file mode 100644
index 0000000..f360afc
--- /dev/null
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java
@@ -0,0 +1,1120 @@
+/*
+ * Copyright 2015 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.vtn.manager.impl;
+
+import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_SET_TUNNEL_DST;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.packet.Ip4Address;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.AnnotationKeys;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Host;
+import org.onosproject.net.HostId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.behaviour.BridgeConfig;
+import org.onosproject.net.behaviour.BridgeDescription;
+import org.onosproject.net.behaviour.ExtensionTreatmentResolver;
+import org.onosproject.net.config.NetworkConfigService;
+import org.onosproject.net.config.basics.BasicDeviceConfig;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.driver.DriverHandler;
+import org.onosproject.net.driver.DriverService;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.TrafficTreatment.Builder;
+import org.onosproject.net.flow.instructions.ExtensionTreatment;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.net.group.DefaultGroupBucket;
+import org.onosproject.net.group.DefaultGroupDescription;
+import org.onosproject.net.group.DefaultGroupKey;
+import org.onosproject.net.group.GroupBucket;
+import org.onosproject.net.group.GroupBuckets;
+import org.onosproject.net.group.GroupDescription;
+import org.onosproject.net.group.GroupKey;
+import org.onosproject.net.group.GroupService;
+import org.onosproject.net.host.HostEvent;
+import org.onosproject.net.host.HostListener;
+import org.onosproject.net.host.HostService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.EventuallyConsistentMap;
+import org.onosproject.store.service.LogicalClockService;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.onosproject.vtn.manager.VtnService;
+import org.onosproject.vtn.table.ArpService;
+import org.onosproject.vtn.table.ClassifierService;
+import org.onosproject.vtn.table.DnatService;
+import org.onosproject.vtn.table.L2ForwardService;
+import org.onosproject.vtn.table.L3ForwardService;
+import org.onosproject.vtn.table.SnatService;
+import org.onosproject.vtn.table.impl.ArpServiceImpl;
+import org.onosproject.vtn.table.impl.ClassifierServiceImpl;
+import org.onosproject.vtn.table.impl.DnatServiceImpl;
+import org.onosproject.vtn.table.impl.L2ForwardServiceImpl;
+import org.onosproject.vtn.table.impl.L3ForwardServiceImpl;
+import org.onosproject.vtn.table.impl.SnatServiceImpl;
+import org.onosproject.vtn.util.DataPathIdGenerator;
+import org.onosproject.vtn.util.VtnConfig;
+import org.onosproject.vtn.util.VtnData;
+import org.onosproject.vtnrsc.AllowedAddressPair;
+import org.onosproject.vtnrsc.BindingHostId;
+import org.onosproject.vtnrsc.DefaultVirtualPort;
+import org.onosproject.vtnrsc.FixedIp;
+import org.onosproject.vtnrsc.FloatingIp;
+import org.onosproject.vtnrsc.RouterInterface;
+import org.onosproject.vtnrsc.SecurityGroup;
+import org.onosproject.vtnrsc.SegmentationId;
+import org.onosproject.vtnrsc.SubnetId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.TenantNetwork;
+import org.onosproject.vtnrsc.TenantNetworkId;
+import org.onosproject.vtnrsc.VirtualPort;
+import org.onosproject.vtnrsc.VirtualPortId;
+import org.onosproject.vtnrsc.event.VtnRscEvent;
+import org.onosproject.vtnrsc.event.VtnRscEventFeedback;
+import org.onosproject.vtnrsc.event.VtnRscListener;
+import org.onosproject.vtnrsc.floatingip.FloatingIpService;
+import org.onosproject.vtnrsc.routerinterface.RouterInterfaceService;
+import org.onosproject.vtnrsc.service.VtnRscService;
+import org.onosproject.vtnrsc.subnet.SubnetService;
+import org.onosproject.vtnrsc.tenantnetwork.TenantNetworkService;
+import org.onosproject.vtnrsc.virtualport.VirtualPortService;
+import org.slf4j.Logger;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+
+/**
+ * Provides implementation of VTNService.
+ */
+@Component(immediate = true)
+@Service
+public class VtnManager implements VtnService {
+    private final Logger log = getLogger(getClass());
+    private static final String APP_ID = "org.onosproject.app.vtn";
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected NetworkConfigService configService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DeviceService deviceService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected HostService hostService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected TenantNetworkService tenantNetworkService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected VirtualPortService virtualPortService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DriverService driverService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected LogicalClockService clockService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected MastershipService mastershipService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected GroupService groupService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected SubnetService subnetService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected VtnRscService vtnRscService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected FloatingIpService floatingIpService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected RouterInterfaceService routerInterfaceService;
+
+    private ApplicationId appId;
+    private ClassifierService classifierService;
+    private L2ForwardService l2ForwardService;
+    private ArpService arpService;
+    private L3ForwardService l3ForwardService;
+    private SnatService snatService;
+    private DnatService dnatService;
+
+    private final HostListener hostListener = new InnerHostListener();
+    private final DeviceListener deviceListener = new InnerDeviceListener();
+    private final VtnRscListener l3EventListener = new VtnL3EventListener();
+
+    private static final String EX_PORT_KEY = "exPortKey";
+    private static final String IFACEID = "ifaceid";
+    private static final String CONTROLLER_IP_KEY = "ipaddress";
+    public static final String DRIVER_NAME = "onosfw";
+    private static final String VIRTUALPORT = "vtn-virtual-port";
+    private static final String SWITCHES_OF_CONTROLLER = "switchesOfController";
+    private static final String SWITCH_OF_LOCAL_HOST_PORTS = "switchOfLocalHostPorts";
+    private static final String ROUTERINF_FLAG_OF_TENANT = "routerInfFlagOfTenant";
+    private static final String HOSTS_OF_SUBNET = "hostsOfSubnet";
+    private static final String EX_PORT_OF_DEVICE = "exPortOfDevice";
+    private static final String EX_PORT_MAP = "exPortMap";
+    private static final String DEFAULT_IP = "0.0.0.0";
+    private static final int SUBNET_NUM = 2;
+
+    private EventuallyConsistentMap<VirtualPortId, VirtualPort> vPortStore;
+    private EventuallyConsistentMap<IpAddress, Boolean> switchesOfController;
+    private EventuallyConsistentMap<DeviceId, NetworkOfLocalHostPorts> switchOfLocalHostPorts;
+    private EventuallyConsistentMap<SubnetId, Map<HostId, Host>> hostsOfSubnet;
+    private EventuallyConsistentMap<TenantId, Boolean> routerInfFlagOfTenant;
+    private EventuallyConsistentMap<DeviceId, Port> exPortOfDevice;
+    private static ConsistentMap<String, String> exPortMap;
+
+    @Activate
+    public void activate() {
+        appId = coreService.registerApplication(APP_ID);
+        classifierService = new ClassifierServiceImpl(appId);
+        l2ForwardService = new L2ForwardServiceImpl(appId);
+        arpService = new ArpServiceImpl(appId);
+        l3ForwardService = new L3ForwardServiceImpl(appId);
+        snatService = new SnatServiceImpl(appId);
+        dnatService = new DnatServiceImpl(appId);
+
+        deviceService.addListener(deviceListener);
+        hostService.addListener(hostListener);
+        vtnRscService.addListener(l3EventListener);
+
+        KryoNamespace.Builder serializer = KryoNamespace.newBuilder()
+                                .register(KryoNamespaces.API)
+                                .register(NetworkOfLocalHostPorts.class)
+                                .register(TenantNetworkId.class)
+                                .register(Host.class)
+                                .register(TenantNetwork.class)
+                                .register(TenantId.class)
+                                .register(SubnetId.class)
+                                .register(VirtualPortId.class)
+                                .register(VirtualPort.State.class)
+                                .register(AllowedAddressPair.class)
+                                .register(FixedIp.class)
+                                .register(BindingHostId.class)
+                                .register(SecurityGroup.class)
+                                .register(IpAddress.class)
+                                .register(DefaultVirtualPort.class);
+
+        vPortStore = storageService
+                .<VirtualPortId, VirtualPort>eventuallyConsistentMapBuilder()
+                .withName(VIRTUALPORT).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        switchesOfController = storageService
+                .<IpAddress, Boolean>eventuallyConsistentMapBuilder()
+                .withName(SWITCHES_OF_CONTROLLER).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        switchOfLocalHostPorts = storageService
+                .<DeviceId, NetworkOfLocalHostPorts>eventuallyConsistentMapBuilder()
+                .withName(SWITCH_OF_LOCAL_HOST_PORTS).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        hostsOfSubnet = storageService
+                .<SubnetId, Map<HostId, Host>>eventuallyConsistentMapBuilder()
+                .withName(HOSTS_OF_SUBNET).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        routerInfFlagOfTenant = storageService
+                .<TenantId, Boolean>eventuallyConsistentMapBuilder()
+                .withName(ROUTERINF_FLAG_OF_TENANT).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        exPortOfDevice = storageService
+                .<DeviceId, Port>eventuallyConsistentMapBuilder()
+                .withName(EX_PORT_OF_DEVICE).withSerializer(serializer)
+                .withTimestampProvider((k, v) -> clockService.getTimestamp())
+                .build();
+
+        exPortMap = storageService
+                .<String, String>consistentMapBuilder()
+                .withName(EX_PORT_MAP)
+                .withApplicationId(appId)
+                .withPurgeOnUninstall()
+                .withSerializer(Serializer.using(Arrays.asList(KryoNamespaces.API)))
+                .build();
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        deviceService.removeListener(deviceListener);
+        hostService.removeListener(hostListener);
+        vtnRscService.removeListener(l3EventListener);
+        log.info("Stopped");
+    }
+
+    @Override
+    public void onControllerDetected(Device controllerDevice) {
+        if (controllerDevice == null) {
+            log.error("The controller device is null");
+            return;
+        }
+        String localIpAddress = controllerDevice.annotations()
+                .value(CONTROLLER_IP_KEY);
+        IpAddress localIp = IpAddress.valueOf(localIpAddress);
+        DeviceId controllerDeviceId = controllerDevice.id();
+        DriverHandler handler = driverService.createHandler(controllerDeviceId);
+        if (mastershipService.isLocalMaster(controllerDeviceId)) {
+            // Get DataPathIdGenerator
+            String ipaddress = controllerDevice.annotations().value("ipaddress");
+            DataPathIdGenerator dpidGenerator = DataPathIdGenerator.builder()
+                                            .addIpAddress(ipaddress).build();
+            DeviceId deviceId = dpidGenerator.getDeviceId();
+            String dpid = dpidGenerator.getDpId();
+            // Inject pipeline driver name
+            BasicDeviceConfig config = configService.addConfig(deviceId,
+                                                               BasicDeviceConfig.class);
+            config.driver(DRIVER_NAME);
+            configService.applyConfig(deviceId, BasicDeviceConfig.class, config.node());
+            // Add Bridge
+            Versioned<String> exPortVersioned = exPortMap.get(EX_PORT_KEY);
+            if (exPortVersioned != null) {
+                VtnConfig.applyBridgeConfig(handler, dpid, exPortVersioned.value());
+                log.info("A new ovs is created in node {}", localIp.toString());
+            }
+            switchesOfController.put(localIp, true);
+        }
+        // Create tunnel in br-int on all controllers
+        programTunnelConfig(controllerDeviceId, localIp, handler);
+    }
+
+    @Override
+    public void onControllerVanished(Device controllerDevice) {
+        if (controllerDevice == null) {
+            log.error("The device is null");
+            return;
+        }
+        String dstIp = controllerDevice.annotations().value(CONTROLLER_IP_KEY);
+        IpAddress dstIpAddress = IpAddress.valueOf(dstIp);
+        DeviceId controllerDeviceId = controllerDevice.id();
+        if (mastershipService.isLocalMaster(controllerDeviceId)) {
+            switchesOfController.remove(dstIpAddress);
+        }
+    }
+
+    @Override
+    public void onOvsDetected(Device device) {
+        // Create tunnel out flow rules
+        applyTunnelOut(device, Objective.Operation.ADD);
+    }
+
+    @Override
+    public void onOvsVanished(Device device) {
+        // Remove Tunnel out flow rules
+        applyTunnelOut(device, Objective.Operation.REMOVE);
+    }
+
+    @Override
+    public void onHostDetected(Host host) {
+        DeviceId deviceId = host.location().deviceId();
+        if (!mastershipService.isLocalMaster(deviceId)) {
+            return;
+        }
+        String ifaceId = host.annotations().value(IFACEID);
+        if (ifaceId == null) {
+            log.error("The ifaceId of Host is null");
+            return;
+        }
+        programSffAndClassifierHost(host, Objective.Operation.ADD);
+        // apply L2 openflow rules
+        applyHostMonitoredL2Rules(host, Objective.Operation.ADD);
+        // apply L3 openflow rules
+        applyHostMonitoredL3Rules(host, Objective.Operation.ADD);
+    }
+
+    @Override
+    public void onHostVanished(Host host) {
+        DeviceId deviceId = host.location().deviceId();
+        if (!mastershipService.isLocalMaster(deviceId)) {
+            return;
+        }
+        String ifaceId = host.annotations().value(IFACEID);
+        if (ifaceId == null) {
+            log.error("The ifaceId of Host is null");
+            return;
+        }
+        programSffAndClassifierHost(host, Objective.Operation.REMOVE);
+        // apply L2 openflow rules
+        applyHostMonitoredL2Rules(host, Objective.Operation.REMOVE);
+        // apply L3 openflow rules
+        applyHostMonitoredL3Rules(host, Objective.Operation.REMOVE);
+        VirtualPortId virtualPortId = VirtualPortId.portId(ifaceId);
+        vPortStore.remove(virtualPortId);
+    }
+
+    private void programTunnelConfig(DeviceId localDeviceId, IpAddress localIp,
+                                     DriverHandler localHandler) {
+        if (mastershipService.isLocalMaster(localDeviceId)) {
+            VtnConfig.applyTunnelConfig(localHandler, localIp, IpAddress.valueOf(DEFAULT_IP));
+            log.info("Add tunnel on {}", localIp);
+        }
+    }
+
+    private void applyTunnelOut(Device device, Objective.Operation type) {
+        if (device == null) {
+            log.error("The device is null");
+            return;
+        }
+        if (!mastershipService.isLocalMaster(device.id())) {
+            return;
+        }
+        String controllerIp = VtnData.getControllerIpOfSwitch(device);
+        if (controllerIp == null) {
+            log.error("Can't find controller of device: {}",
+                      device.id().toString());
+            return;
+        }
+        IpAddress ipAddress = IpAddress.valueOf(controllerIp);
+        if (!switchesOfController.containsKey(ipAddress)) {
+            log.error("Can't find controller of device: {}",
+                      device.id().toString());
+            return;
+        }
+        if (type == Objective.Operation.ADD) {
+            // Save external port
+            Port export = getExPort(device.id());
+            if (export != null) {
+                exPortOfDevice.put(device.id(), export);
+            }
+            switchOfLocalHostPorts.put(device.id(), new NetworkOfLocalHostPorts());
+        } else if (type == Objective.Operation.REMOVE) {
+            exPortOfDevice.remove(device.id());
+            switchOfLocalHostPorts.remove(device.id());
+        }
+        Iterable<Device> devices = deviceService.getAvailableDevices();
+        DeviceId localControllerId = VtnData.getControllerId(device, devices);
+        DriverHandler handler = driverService.createHandler(localControllerId);
+        Set<PortNumber> ports = VtnConfig.getPortNumbers(handler);
+        Iterable<Host> allHosts = hostService.getHosts();
+        String tunnelName = "vxlan-" + DEFAULT_IP;
+        if (allHosts != null) {
+            Sets.newHashSet(allHosts).stream().forEach(host -> {
+                MacAddress hostMac = host.mac();
+                String ifaceId = host.annotations().value(IFACEID);
+                if (ifaceId == null) {
+                    log.error("The ifaceId of Host is null");
+                    return;
+                }
+                VirtualPortId virtualPortId = VirtualPortId.portId(ifaceId);
+                VirtualPort virtualPort = virtualPortService
+                        .getPort(virtualPortId);
+                TenantNetwork network = tenantNetworkService
+                        .getNetwork(virtualPort.networkId());
+                SegmentationId segmentationId = network.segmentationId();
+                DeviceId remoteDeviceId = host.location().deviceId();
+                Device remoteDevice = deviceService.getDevice(remoteDeviceId);
+                String remoteControllerIp = VtnData
+                        .getControllerIpOfSwitch(remoteDevice);
+                if (remoteControllerIp == null) {
+                    log.error("Can't find remote controller of device: {}",
+                              remoteDeviceId.toString());
+                    return;
+                }
+                IpAddress remoteIpAddress = IpAddress
+                        .valueOf(remoteControllerIp);
+                ports.stream()
+                        .filter(p -> p.name().equalsIgnoreCase(tunnelName))
+                        .forEach(p -> {
+                    l2ForwardService
+                            .programTunnelOut(device.id(), segmentationId, p,
+                                              hostMac, type, remoteIpAddress);
+                });
+            });
+        }
+    }
+
+    private void programSffAndClassifierHost(Host host, Objective.Operation type) {
+        DeviceId deviceId = host.location().deviceId();
+        String ifaceId = host.annotations().value(IFACEID);
+        VirtualPortId virtualPortId = VirtualPortId.portId(ifaceId);
+        VirtualPort virtualPort = virtualPortService.getPort(virtualPortId);
+        if (virtualPort == null) {
+            virtualPort = VtnData.getPort(vPortStore, virtualPortId);
+        }
+        TenantId tenantId = virtualPort.tenantId();
+        if (Objective.Operation.ADD == type) {
+            vtnRscService.addDeviceIdOfOvsMap(virtualPortId, tenantId, deviceId);
+        } else if (Objective.Operation.REMOVE == type) {
+            vtnRscService.removeDeviceIdOfOvsMap(host, tenantId, deviceId);
+        }
+    }
+
+    private void applyHostMonitoredL2Rules(Host host, Objective.Operation type) {
+        DeviceId deviceId = host.location().deviceId();
+        if (!mastershipService.isLocalMaster(deviceId)) {
+            return;
+        }
+        String ifaceId = host.annotations().value(IFACEID);
+        if (ifaceId == null) {
+            log.error("The ifaceId of Host is null");
+            return;
+        }
+        VirtualPortId virtualPortId = VirtualPortId.portId(ifaceId);
+        VirtualPort virtualPort = virtualPortService.getPort(virtualPortId);
+        if (virtualPort == null) {
+            virtualPort = VtnData.getPort(vPortStore, virtualPortId);
+        }
+        Iterator<FixedIp> fixip = virtualPort.fixedIps().iterator();
+        SubnetId subnetId = null;
+        if (fixip.hasNext()) {
+            subnetId = fixip.next().subnetId();
+        }
+        if (subnetId != null) {
+            Map<HostId, Host> hosts = new ConcurrentHashMap();
+            if (hostsOfSubnet.get(subnetId) != null) {
+                hosts = hostsOfSubnet.get(subnetId);
+            }
+            if (type == Objective.Operation.ADD) {
+                hosts.put(host.id(), host);
+                hostsOfSubnet.put(subnetId, hosts);
+            } else if (type == Objective.Operation.REMOVE) {
+                hosts.remove(host.id());
+                if (hosts.size() != 0) {
+                    hostsOfSubnet.put(subnetId, hosts);
+                } else {
+                    hostsOfSubnet.remove(subnetId);
+                }
+            }
+        }
+
+        Iterable<Device> devices = deviceService.getAvailableDevices();
+        PortNumber inPort = host.location().port();
+        MacAddress mac = host.mac();
+        Device device = deviceService.getDevice(deviceId);
+        String controllerIp = VtnData.getControllerIpOfSwitch(device);
+        IpAddress ipAddress = IpAddress.valueOf(controllerIp);
+        TenantNetwork network = tenantNetworkService.getNetwork(virtualPort.networkId());
+        if (network == null) {
+            log.error("Can't find network of the host");
+            return;
+        }
+        SegmentationId segmentationId = network.segmentationId();
+        // Get all the tunnel PortNumber in the current node
+        Iterable<Port> ports = deviceService.getPorts(deviceId);
+        Collection<PortNumber> localTunnelPorts = VtnData.getLocalTunnelPorts(ports);
+        // Get all the local vm's PortNumber in the current node
+        Map<TenantNetworkId, Set<PortNumber>> localHostPorts = switchOfLocalHostPorts
+                .get(deviceId).getNetworkOfLocalHostPorts();
+        Set<PortNumber> networkOflocalHostPorts = localHostPorts.get(network.id());
+        for (PortNumber p : localTunnelPorts) {
+            programGroupTable(deviceId, appId, p, devices, type);
+        }
+
+        if (type == Objective.Operation.ADD) {
+            vPortStore.put(virtualPortId, virtualPort);
+            if (networkOflocalHostPorts == null) {
+                networkOflocalHostPorts = new HashSet<PortNumber>();
+                localHostPorts.putIfAbsent(network.id(), networkOflocalHostPorts);
+            }
+            networkOflocalHostPorts.add(inPort);
+            l2ForwardService.programLocalBcastRules(deviceId, segmentationId,
+                                                    inPort, networkOflocalHostPorts,
+                                                    localTunnelPorts,
+                                                    type);
+            classifierService.programTunnelIn(deviceId, segmentationId,
+                                              localTunnelPorts,
+                                              type);
+        } else if (type == Objective.Operation.REMOVE) {
+            if (networkOflocalHostPorts != null) {
+                l2ForwardService.programLocalBcastRules(deviceId, segmentationId,
+                                                        inPort, networkOflocalHostPorts,
+                                                        localTunnelPorts,
+                                                        type);
+                networkOflocalHostPorts.remove(inPort);
+                if (networkOflocalHostPorts.isEmpty()) {
+                    classifierService.programTunnelIn(deviceId, segmentationId,
+                                                      localTunnelPorts,
+                                                      type);
+                    switchOfLocalHostPorts.get(deviceId).getNetworkOfLocalHostPorts()
+                                                .remove(virtualPort.networkId());
+                }
+            }
+        }
+
+        l2ForwardService.programLocalOut(deviceId, segmentationId, inPort, mac,
+                                         type);
+
+        l2ForwardService.programTunnelBcastRules(deviceId, segmentationId,
+                                                 networkOflocalHostPorts,
+                                                 localTunnelPorts,
+                                                 type);
+
+        programTunnelOuts(devices, ipAddress, segmentationId, mac,
+                          type);
+
+        classifierService.programLocalIn(deviceId, segmentationId, inPort, mac,
+                                         appId, type);
+    }
+
+    private void programTunnelOuts(Iterable<Device> devices,
+                                   IpAddress ipAddress,
+                                   SegmentationId segmentationId,
+                                   MacAddress dstMac,
+                                   Objective.Operation type) {
+        String tunnelName = "vxlan-" + DEFAULT_IP;
+        Sets.newHashSet(devices).stream()
+                .filter(d -> d.type() == Device.Type.CONTROLLER)
+                .filter(d -> !("ovsdb:" + ipAddress).equals(d.id().toString()))
+                .forEach(d -> {
+                    DriverHandler handler = driverService.createHandler(d.id());
+                    BridgeConfig bridgeConfig = handler
+                            .behaviour(BridgeConfig.class);
+                    Collection<BridgeDescription> bridgeDescriptions = bridgeConfig
+                            .getBridges();
+                    Iterator<BridgeDescription> it = bridgeDescriptions
+                            .iterator();
+                    while (it.hasNext()) {
+                        BridgeDescription sw = it.next();
+                        if (sw.bridgeName().name().equals(VtnConfig.DEFAULT_BRIDGE_NAME)) {
+                            List<Port> ports = deviceService.getPorts(sw.deviceId());
+                            ports.stream()
+                                    .filter(p -> p.annotations().value(AnnotationKeys.PORT_NAME)
+                                            .equalsIgnoreCase(tunnelName))
+                                    .forEach(p -> {
+                                l2ForwardService.programTunnelOut(sw.deviceId(),
+                                                                  segmentationId, p.number(),
+                                                                  dstMac, type, ipAddress);
+                            });
+                            break;
+                        }
+                    }
+                });
+    }
+
+    private class InnerDeviceListener implements DeviceListener {
+
+        @Override
+        public void event(DeviceEvent event) {
+            Device device = event.subject();
+            if (Device.Type.CONTROLLER == device.type()) {
+                if (DeviceEvent.Type.DEVICE_ADDED == event.type()) {
+                    onControllerDetected(device);
+                }
+                if (DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED == event.type()) {
+                    if (deviceService.isAvailable(device.id())) {
+                        onControllerDetected(device);
+                    } else {
+                        onControllerVanished(device);
+                    }
+                }
+            } else if (Device.Type.SWITCH == device.type()) {
+                if (DeviceEvent.Type.DEVICE_ADDED == event.type()) {
+                    onOvsDetected(device);
+                }
+                if (DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED == event.type()) {
+                    if (deviceService.isAvailable(device.id())) {
+                        onOvsDetected(device);
+                    } else {
+                        onOvsVanished(device);
+                    }
+                }
+            } else {
+                log.info("Do nothing for this device type");
+            }
+        }
+    }
+
+    private class InnerHostListener implements HostListener {
+
+        @Override
+        public void event(HostEvent event) {
+            Host host = event.subject();
+            if (HostEvent.Type.HOST_ADDED == event.type()) {
+                onHostDetected(host);
+            } else if (HostEvent.Type.HOST_REMOVED == event.type()) {
+                onHostVanished(host);
+            } else if (HostEvent.Type.HOST_UPDATED == event.type()) {
+                onHostVanished(host);
+                onHostDetected(host);
+            }
+        }
+
+    }
+
+    // Local Host Ports of Network.
+    private class NetworkOfLocalHostPorts {
+        private final Map<TenantNetworkId, Set<PortNumber>> networkOfLocalHostPorts =
+                                      new HashMap<TenantNetworkId, Set<PortNumber>>();
+
+        public Map<TenantNetworkId, Set<PortNumber>> getNetworkOfLocalHostPorts() {
+            return networkOfLocalHostPorts;
+        }
+    }
+
+    private void programGroupTable(DeviceId deviceId, ApplicationId appid,
+                                   PortNumber portNumber, Iterable<Device> devices, Objective.Operation type) {
+        if (type.equals(Objective.Operation.REMOVE)) {
+            return;
+        }
+
+        List<GroupBucket> buckets = Lists.newArrayList();
+        Sets.newHashSet(devices)
+        .stream()
+        .filter(d -> d.type() == Device.Type.CONTROLLER)
+        .filter(d -> !deviceId.equals(d.id()))
+        .forEach(d -> {
+                    String ipAddress = d.annotations()
+                             .value(CONTROLLER_IP_KEY);
+                    Ip4Address dst = Ip4Address.valueOf(ipAddress);
+                    Builder builder = DefaultTrafficTreatment.builder();
+
+                    DriverHandler handler = driverService.createHandler(deviceId);
+                    ExtensionTreatmentResolver resolver =  handler.behaviour(ExtensionTreatmentResolver.class);
+                    ExtensionTreatment treatment = resolver.getExtensionInstruction(NICIRA_SET_TUNNEL_DST.type());
+                    try {
+                        treatment.setPropertyValue("tunnelDst", dst);
+                    } catch (Exception e) {
+                       log.error("Failed to get extension instruction to set tunnel dst {}", deviceId);
+                    }
+
+                    builder.extension(treatment, deviceId);
+                    builder.setOutput(portNumber);
+                    GroupBucket bucket = DefaultGroupBucket
+                            .createAllGroupBucket(builder.build());
+                    buckets.add(bucket);
+                 });
+        final GroupKey key = new DefaultGroupKey(APP_ID.getBytes());
+        GroupDescription groupDescription = new DefaultGroupDescription(deviceId,
+                                                                        GroupDescription.Type.ALL,
+                                                                        new GroupBuckets(buckets),
+                                                                        key,
+                                                                        L2ForwardServiceImpl.GROUP_ID,
+                                                                        appid);
+        groupService.addGroup(groupDescription);
+    }
+
+    private class VtnL3EventListener implements VtnRscListener {
+        @Override
+        public void event(VtnRscEvent event) {
+            VtnRscEventFeedback l3Feedback = event.subject();
+            if (VtnRscEvent.Type.ROUTER_INTERFACE_PUT == event.type()) {
+                onRouterInterfaceDetected(l3Feedback);
+            } else
+                if (VtnRscEvent.Type.ROUTER_INTERFACE_DELETE == event.type()) {
+                onRouterInterfaceVanished(l3Feedback);
+            } else if (VtnRscEvent.Type.FLOATINGIP_BIND == event.type()) {
+                onFloatingIpDetected(l3Feedback);
+            } else if (VtnRscEvent.Type.FLOATINGIP_UNBIND == event.type()) {
+                onFloatingIpVanished(l3Feedback);
+            }
+        }
+
+    }
+
+    @Override
+    public void onRouterInterfaceDetected(VtnRscEventFeedback l3Feedback) {
+        Objective.Operation operation = Objective.Operation.ADD;
+        RouterInterface routerInf = l3Feedback.routerInterface();
+        VirtualPort gwPort = virtualPortService.getPort(routerInf.portId());
+        vPortStore.put(gwPort.portId(), gwPort);
+        Iterable<RouterInterface> interfaces = routerInterfaceService
+                .getRouterInterfaces();
+        Set<RouterInterface> interfacesSet = Sets.newHashSet(interfaces)
+                .stream().filter(r -> r.tenantId().equals(routerInf.tenantId()))
+                .collect(Collectors.toSet());
+        if (routerInfFlagOfTenant.get(routerInf.tenantId()) != null) {
+            programRouterInterface(routerInf, operation);
+        } else {
+            if (interfacesSet.size() >= SUBNET_NUM) {
+                programInterfacesSet(interfacesSet, operation);
+            }
+        }
+    }
+
+    @Override
+    public void onRouterInterfaceVanished(VtnRscEventFeedback l3Feedback) {
+        Objective.Operation operation = Objective.Operation.REMOVE;
+        RouterInterface routerInf = l3Feedback.routerInterface();
+        Iterable<RouterInterface> interfaces = routerInterfaceService
+                .getRouterInterfaces();
+        Set<RouterInterface> interfacesSet = Sets.newHashSet(interfaces)
+                .stream().filter(r -> r.tenantId().equals(routerInf.tenantId()))
+                .collect(Collectors.toSet());
+        if (routerInfFlagOfTenant.get(routerInf.tenantId()) != null) {
+            programRouterInterface(routerInf, operation);
+            if (interfacesSet.size() == 1) {
+                routerInfFlagOfTenant.remove(routerInf.tenantId());
+                interfacesSet.stream().forEach(r -> {
+                    programRouterInterface(r, operation);
+                });
+            }
+        }
+        VirtualPort gwPort = virtualPortService.getPort(routerInf.portId());
+        if (gwPort == null) {
+            gwPort = VtnData.getPort(vPortStore, routerInf.portId());
+        }
+        vPortStore.remove(gwPort.portId());
+    }
+
+    @Override
+    public void onFloatingIpDetected(VtnRscEventFeedback l3Feedback) {
+        programFloatingIpEvent(l3Feedback, VtnRscEvent.Type.FLOATINGIP_BIND);
+    }
+
+    @Override
+    public void onFloatingIpVanished(VtnRscEventFeedback l3Feedback) {
+        programFloatingIpEvent(l3Feedback, VtnRscEvent.Type.FLOATINGIP_UNBIND);
+    }
+
+    private void programInterfacesSet(Set<RouterInterface> interfacesSet,
+                                      Objective.Operation operation) {
+        int subnetVmNum = 0;
+        for (RouterInterface r : interfacesSet) {
+            // Get all the host of the subnet
+            Map<HostId, Host> hosts = hostsOfSubnet.get(r.subnetId());
+            if (hosts != null && hosts.size() > 0) {
+                subnetVmNum++;
+                if (subnetVmNum >= SUBNET_NUM) {
+                    routerInfFlagOfTenant.put(r.tenantId(), true);
+                    interfacesSet.stream().forEach(f -> {
+                        programRouterInterface(f, operation);
+                    });
+                    break;
+                }
+            }
+        }
+    }
+
+    private void programRouterInterface(RouterInterface routerInf,
+                                        Objective.Operation operation) {
+        SegmentationId l3vni = vtnRscService.getL3vni(routerInf.tenantId());
+        // Get all the host of the subnet
+        Map<HostId, Host> hosts = hostsOfSubnet.get(routerInf.subnetId());
+        hosts.values().stream().forEach(h -> {
+            applyEastWestL3Flows(h, l3vni, operation);
+        });
+    }
+
+    private void applyEastWestL3Flows(Host h, SegmentationId l3vni,
+                                      Objective.Operation operation) {
+        if (!mastershipService.isLocalMaster(h.location().deviceId())) {
+            log.debug("not master device:{}", h.location().deviceId());
+            return;
+        }
+        String ifaceId = h.annotations().value(IFACEID);
+        VirtualPort hPort = virtualPortService
+                .getPort(VirtualPortId.portId(ifaceId));
+        if (hPort == null) {
+            hPort = VtnData.getPort(vPortStore, VirtualPortId.portId(ifaceId));
+        }
+        IpAddress srcIp = null;
+        IpAddress srcGwIp = null;
+        MacAddress srcVmGwMac = null;
+        SubnetId srcSubnetId = null;
+        Iterator<FixedIp> srcIps = hPort.fixedIps().iterator();
+        if (srcIps.hasNext()) {
+            FixedIp fixedIp = srcIps.next();
+            srcIp = fixedIp.ip();
+            srcSubnetId = fixedIp.subnetId();
+            srcGwIp = subnetService.getSubnet(srcSubnetId).gatewayIp();
+            FixedIp fixedGwIp = FixedIp.fixedIp(srcSubnetId, srcGwIp);
+            VirtualPort gwPort = virtualPortService.getPort(fixedGwIp);
+            if (gwPort == null) {
+                gwPort = VtnData.getPort(vPortStore, fixedGwIp);
+            }
+            srcVmGwMac = gwPort.macAddress();
+        }
+        TenantNetwork network = tenantNetworkService
+                .getNetwork(hPort.networkId());
+        // Classifier rules
+        classifierService
+                .programL3InPortClassifierRules(h.location().deviceId(),
+                                                h.location().port(), h.mac(),
+                                                srcVmGwMac, l3vni, operation);
+        // Arp rules
+        if (operation == Objective.Operation.ADD) {
+            classifierService.programArpClassifierRules(h.location().deviceId(),
+                                                        srcGwIp,
+                                                        network.segmentationId(),
+                                                        operation);
+            DriverHandler handler = driverService.createHandler(h.location().deviceId());
+            arpService.programArpRules(handler, h.location().deviceId(), srcGwIp,
+                                       network.segmentationId(), srcVmGwMac,
+                                       operation);
+        }
+        Iterable<Device> devices = deviceService.getAvailableDevices();
+        IpAddress srcArpIp = srcIp;
+        MacAddress srcArpGwMac = srcVmGwMac;
+        Sets.newHashSet(devices).stream()
+                .filter(d -> Device.Type.SWITCH == d.type()).forEach(d -> {
+                    // L3FWD rules
+                    l3ForwardService.programRouteRules(d.id(), l3vni, srcArpIp,
+                                                       network.segmentationId(),
+                                                       srcArpGwMac, h.mac(),
+                                                       operation);
+                });
+    }
+
+    private void programFloatingIpEvent(VtnRscEventFeedback l3Feedback,
+                                       VtnRscEvent.Type type) {
+        FloatingIp floaingIp = l3Feedback.floatingIp();
+        if (floaingIp != null) {
+            VirtualPortId vmPortId = floaingIp.portId();
+            VirtualPort vmPort = virtualPortService.getPort(vmPortId);
+            VirtualPort fipPort = virtualPortService
+                    .getPort(floaingIp.networkId(), floaingIp.floatingIp());
+            if (vmPort == null) {
+                vmPort = VtnData.getPort(vPortStore, vmPortId);
+            }
+            if (fipPort == null) {
+                fipPort = VtnData.getPort(vPortStore, floaingIp.networkId(),
+                                          floaingIp.floatingIp());
+            }
+            Set<Host> hostSet = hostService.getHostsByMac(vmPort.macAddress());
+            Host host = null;
+            for (Host h : hostSet) {
+                String ifaceid = h.annotations().value(IFACEID);
+                if (ifaceid != null && ifaceid.equals(vmPortId.portId())) {
+                    host = h;
+                    break;
+                }
+            }
+            if (host != null && vmPort != null && fipPort != null) {
+                DeviceId deviceId = host.location().deviceId();
+                Port exPort = exPortOfDevice.get(deviceId);
+                SegmentationId l3vni = vtnRscService
+                        .getL3vni(vmPort.tenantId());
+                // Floating ip BIND
+                if (type == VtnRscEvent.Type.FLOATINGIP_BIND) {
+                    vPortStore.put(fipPort.portId(), fipPort);
+                    applyNorthSouthL3Flows(deviceId, host, vmPort, fipPort,
+                                           floaingIp, l3vni, exPort,
+                                           Objective.Operation.ADD);
+                } else if (type == VtnRscEvent.Type.FLOATINGIP_UNBIND) {
+                    // Floating ip UNBIND
+                    applyNorthSouthL3Flows(deviceId, host, vmPort, fipPort,
+                                           floaingIp, l3vni, exPort,
+                                           Objective.Operation.REMOVE);
+                    vPortStore.remove(fipPort.portId());
+                }
+            }
+        }
+    }
+
+    private void applyNorthSouthL3Flows(DeviceId deviceId, Host host,
+                                        VirtualPort vmPort, VirtualPort fipPort,
+                                        FloatingIp floatingIp,
+                                        SegmentationId l3Vni, Port exPort,
+                                        Objective.Operation operation) {
+        if (!mastershipService.isLocalMaster(deviceId)) {
+            log.debug("not master device:{}", deviceId);
+            return;
+        }
+        List gwIpMac = getGwIpAndMac(vmPort);
+        IpAddress dstVmGwIp = (IpAddress) gwIpMac.get(0);
+        MacAddress dstVmGwMac = (MacAddress) gwIpMac.get(1);
+        List fGwIpMac = getGwIpAndMac(fipPort);
+        MacAddress fGwMac = (MacAddress) fGwIpMac.get(1);
+        TenantNetwork vmNetwork = tenantNetworkService
+                .getNetwork(vmPort.networkId());
+        TenantNetwork fipNetwork = tenantNetworkService
+                .getNetwork(fipPort.networkId());
+        // L3 downlink traffic flow
+        MacAddress exPortMac = MacAddress.valueOf(exPort.annotations()
+                                                  .value(AnnotationKeys.PORT_MAC));
+        classifierService.programArpClassifierRules(deviceId, floatingIp.floatingIp(),
+                                                    fipNetwork.segmentationId(),
+                                                    operation);
+        classifierService.programL3ExPortClassifierRules(deviceId, exPort.number(),
+                                                         floatingIp.floatingIp(), operation);
+        DriverHandler handler = driverService.createHandler(deviceId);
+        arpService.programArpRules(handler, deviceId, floatingIp.floatingIp(),
+                                         fipNetwork.segmentationId(), exPortMac,
+                                         operation);
+        dnatService.programRules(deviceId, floatingIp.floatingIp(),
+                                     fGwMac, floatingIp.fixedIp(),
+                                     l3Vni, operation);
+        l3ForwardService
+                .programRouteRules(deviceId, l3Vni, floatingIp.fixedIp(),
+                                   vmNetwork.segmentationId(), dstVmGwMac,
+                                   vmPort.macAddress(), operation);
+
+        // L3 uplink traffic flow
+        classifierService.programL3InPortClassifierRules(deviceId,
+                                                         host.location().port(),
+                                                         host.mac(), dstVmGwMac,
+                                                         l3Vni, operation);
+        snatService.programRules(deviceId, l3Vni, floatingIp.fixedIp(),
+                                     fGwMac, exPortMac,
+                                     floatingIp.floatingIp(),
+                                     fipNetwork.segmentationId(), operation);
+        if (operation == Objective.Operation.ADD) {
+            classifierService.programArpClassifierRules(deviceId, dstVmGwIp,
+                                                        vmNetwork.segmentationId(),
+                                                        operation);
+            arpService.programArpRules(handler, deviceId, dstVmGwIp,
+                                       vmNetwork.segmentationId(), dstVmGwMac,
+                                       operation);
+            l2ForwardService.programLocalOut(deviceId,
+                                             fipNetwork.segmentationId(),
+                                             exPort.number(), fGwMac, operation);
+        }
+    }
+
+    private Port getExPort(DeviceId deviceId) {
+        List<Port> ports = deviceService.getPorts(deviceId);
+        Port exPort = null;
+        for (Port port : ports) {
+            String portName = port.annotations().value(AnnotationKeys.PORT_NAME);
+            Versioned<String> exPortVersioned = exPortMap.get(EX_PORT_KEY);
+            if (portName != null && exPortVersioned != null && portName.
+                    equals(exPortVersioned.value())) {
+                exPort = port;
+                break;
+            }
+        }
+        return exPort;
+    }
+
+    private List getGwIpAndMac(VirtualPort port) {
+        List list = new ArrayList();
+        MacAddress gwMac = null;
+        SubnetId subnetId = null;
+        IpAddress gwIp = null;
+        Iterator<FixedIp> fixips = port.fixedIps().iterator();
+        if (fixips.hasNext()) {
+            FixedIp fixip = fixips.next();
+            subnetId = fixip.subnetId();
+            gwIp = subnetService.getSubnet(subnetId).gatewayIp();
+            FixedIp fixedGwIp = FixedIp.fixedIp(fixip.subnetId(), gwIp);
+            VirtualPort gwPort = virtualPortService.getPort(fixedGwIp);
+            if (gwPort == null) {
+                gwPort = VtnData.getPort(vPortStore, fixedGwIp);
+            }
+            gwMac = gwPort.macAddress();
+        }
+        list.add(gwIp);
+        list.add(gwMac);
+        return list;
+    }
+
+    private void applyHostMonitoredL3Rules(Host host,
+                                           Objective.Operation operation) {
+        String ifaceId = host.annotations().value(IFACEID);
+        DeviceId deviceId = host.location().deviceId();
+        VirtualPortId portId = VirtualPortId.portId(ifaceId);
+        VirtualPort port = virtualPortService.getPort(portId);
+        if (port == null) {
+            port = VtnData.getPort(vPortStore, portId);
+        }
+        TenantId tenantId = port.tenantId();
+        Port exPort = exPortOfDevice.get(deviceId);
+        SegmentationId l3vni = vtnRscService.getL3vni(tenantId);
+        Iterator<FixedIp> fixips = port.fixedIps().iterator();
+        SubnetId sid = null;
+        IpAddress hostIp = null;
+        if (fixips.hasNext()) {
+            FixedIp fixip = fixips.next();
+            sid = fixip.subnetId();
+            hostIp = fixip.ip();
+        }
+        final SubnetId subnetId = sid;
+        // L3 internal network access to each other
+        Iterable<RouterInterface> interfaces = routerInterfaceService
+                .getRouterInterfaces();
+        Set<RouterInterface> interfacesSet = Sets.newHashSet(interfaces)
+                .stream().filter(r -> r.tenantId().equals(tenantId))
+                .collect(Collectors.toSet());
+        long count = interfacesSet.stream()
+                .filter(r -> !r.subnetId().equals(subnetId)).count();
+        if (count > 0) {
+            if (operation == Objective.Operation.ADD) {
+                if (routerInfFlagOfTenant.get(tenantId) != null) {
+                    applyEastWestL3Flows(host, l3vni, operation);
+                } else {
+                    if (interfacesSet.size() > 1) {
+                        programInterfacesSet(interfacesSet, operation);
+                    }
+                }
+            } else if (operation == Objective.Operation.REMOVE) {
+                if (routerInfFlagOfTenant.get(tenantId) != null) {
+                    applyEastWestL3Flows(host, l3vni, operation);
+                }
+            }
+        }
+        // L3 external and internal network access to each other
+        FloatingIp floatingIp = null;
+        Iterable<FloatingIp> floatingIps = floatingIpService.getFloatingIps();
+        Set<FloatingIp> floatingIpSet = Sets.newHashSet(floatingIps).stream()
+                .filter(f -> f.tenantId().equals(tenantId))
+                .collect(Collectors.toSet());
+        for (FloatingIp f : floatingIpSet) {
+            IpAddress fixedIp = f.fixedIp();
+            if (fixedIp.equals(hostIp)) {
+                floatingIp = f;
+                break;
+            }
+        }
+        if (floatingIp != null) {
+            VirtualPort fipPort = virtualPortService
+                    .getPort(floatingIp.networkId(), floatingIp.floatingIp());
+            if (fipPort == null) {
+                fipPort = VtnData.getPort(vPortStore, floatingIp.networkId(),
+                                          floatingIp.floatingIp());
+            }
+            applyNorthSouthL3Flows(deviceId, host, port, fipPort, floatingIp,
+                                   l3vni, exPort, operation);
+        }
+    }
+
+    public static void setExPortName(String name) {
+        exPortMap.put(EX_PORT_KEY, name);
+    }
+}