More elan Blueprint clean-up
[netvirt.git] / vpnservice / elanmanager / elanmanager-impl / src / main / java / org / opendaylight / netvirt / elan / internal / ElanServiceProvider.java
index 4b23d07321c14945ae40e6d002a4992e4b03ffb4..cb1a9978328d6e22929b9cc9065e5066768b993a 100644 (file)
@@ -8,36 +8,45 @@
 
 package org.opendaylight.netvirt.elan.internal;
 
+import com.google.common.base.Optional;
+import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.Future;
-
+import java.util.function.BiFunction;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.controller.md.sal.binding.api.NotificationService;
-import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
-import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
-import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
-import org.opendaylight.netvirt.elan.utils.ElanForwardingEntriesHandler;
-import org.opendaylight.netvirt.elanmanager.api.IElanService;
-import org.opendaylight.netvirt.elanmanager.exceptions.MacNotFoundException;
-import org.opendaylight.genius.datastoreutils.DataStoreJobCoordinator;
-import org.opendaylight.netvirt.elan.l2gw.internal.ElanL2GatewayProvider;
-import org.opendaylight.netvirt.elan.statisitcs.ElanStatisticsImpl;
+import org.opendaylight.genius.interfacemanager.exceptions.InterfaceAlreadyExistsException;
+import org.opendaylight.genius.interfacemanager.globals.IfmConstants;
+import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
+import org.opendaylight.genius.mdsalutil.MDSALUtil;
 import org.opendaylight.netvirt.elan.statusanddiag.ElanStatusMonitor;
-import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
 import org.opendaylight.netvirt.elan.utils.ElanConstants;
 import org.opendaylight.netvirt.elan.utils.ElanUtils;
-import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
-import org.opendaylight.genius.itm.api.IITMProvider;
-import org.opendaylight.genius.mdsalutil.MDSALUtil;
-import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
+import org.opendaylight.netvirt.elanmanager.api.IElanService;
+import org.opendaylight.netvirt.elanmanager.exceptions.MacNotFoundException;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.PhysAddress;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInput;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInputBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstance;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInstanceBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterface.EtreeInterfaceType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.etree.rev160614.EtreeInterfaceBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInterfaces;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan._interface.forwarding.entries.ElanInterfaceMac;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.dpn.interfaces.elan.dpn.interfaces.list.DpnInterfaces;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstanceKey;
@@ -46,245 +55,64 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterfaceKey;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.state.Elan;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.forwarding.entries.MacEntry;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.statistics.rev150824.ElanStatisticsService;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInput;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.CreateIdPoolInputBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rpcs.rev160406.OdlInterfaceRpcService;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rpcs.rev160406.ItmRpcService;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.opendaylight.yangtools.yang.common.RpcResult;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Optional;
-
-public class ElanServiceProvider implements BindingAwareProvider, IElanService, AutoCloseable {
-
-    private IdManagerService idManager;
-    private IMdsalApiManager mdsalManager;
-    private IInterfaceManager interfaceManager;
-    private OdlInterfaceRpcService interfaceManagerRpcService;
-    private ElanInstanceManager elanInstanceManager;
-    private ElanForwardingEntriesHandler elanForwardingEntriesHandler;
-    public IdManagerService getIdManager() {
-        return idManager;
-    }
+public class ElanServiceProvider implements IElanService {
 
-    public ElanForwardingEntriesHandler getElanForwardingEntriesHandler() {
-        return elanForwardingEntriesHandler;
-    }
-
-    public ElanPacketInHandler getElanPacketInHandler() {
-        return elanPacketInHandler;
-    }
+    private static final Logger LOG = LoggerFactory.getLogger(ElanServiceProvider.class);
 
-    public ElanSmacFlowEventListener getElanSmacFlowEventListener() {
-        return elanSmacFlowEventListener;
-    }
-
-    public ElanInterfaceStateChangeListener getElanInterfaceStateChangeListener() {
-        return elanInterfaceStateChangeListener;
-    }
-
-    public ElanInterfaceStateClusteredListener getInfStateChangeClusteredListener() {
-        return infStateChangeClusteredListener;
-    }
-
-    public ElanDpnInterfaceClusteredListener getElanDpnInterfaceClusteredListener() {
-        return elanDpnInterfaceClusteredListener;
-    }
-
-    public ElanNodeListener getElanNodeListener() {
-        return elanNodeListener;
-    }
-
-    public NotificationService getNotificationService() {
-        return notificationService;
-    }
-
-    public RpcProviderRegistry getRpcProviderRegistry() {
-        return rpcProviderRegistry;
-    }
-
-    public ElanL2GatewayProvider getElanL2GatewayProvider() {
-        return elanL2GatewayProvider;
-    }
-
-    public static ElanStatusMonitor getElanstatusmonitor() {
-        return elanStatusMonitor;
-    }
-
-    public ElanItmEventListener getElanItmEventListener() {
-        return elanItmEventListener;
-    }
-
-    public static Logger getLogger() {
-        return logger;
-    }
-
-    private ElanInterfaceManager elanInterfaceManager;
-    private ElanPacketInHandler elanPacketInHandler;
-    private ElanSmacFlowEventListener elanSmacFlowEventListener;
-    private ElanInterfaceStateChangeListener elanInterfaceStateChangeListener;
-    private ElanInterfaceStateClusteredListener infStateChangeClusteredListener;
-    private ElanDpnInterfaceClusteredListener elanDpnInterfaceClusteredListener;
-    private ElanNodeListener elanNodeListener;
-    private NotificationService notificationService;
-    private RpcProviderRegistry rpcProviderRegistry;
-    private IITMProvider itmManager;
-    private ItmRpcService itmRpcService;
-    private DataBroker broker;
-    private ElanL2GatewayProvider elanL2GatewayProvider;
-    private ElanStatisticsService interfaceStatsService;
-    private EntityOwnershipService entityOwnershipService;
-    private static final ElanStatusMonitor elanStatusMonitor = ElanStatusMonitor.getInstance();
-    static DataStoreJobCoordinator dataStoreJobCoordinator;
-    private ElanOvsdbNodeListener elanOvsdbNodeListener;
+    private final IdManagerService idManager;
+    private final IInterfaceManager interfaceManager;
+    private final ElanInstanceManager elanInstanceManager;
+    private final ElanBridgeManager bridgeMgr;
+    private final DataBroker broker;
+    private final ElanStatusMonitor elanStatusMonitor;
+    private static ElanUtils elanUtils;
 
     private boolean generateIntBridgeMac = true;
 
-    public static void setDataStoreJobCoordinator(DataStoreJobCoordinator ds) {
-        dataStoreJobCoordinator = ds;
-    }
-
-    public void setBroker(DataBroker broker) {
-        this.broker = broker;
-    }
-
-    public static DataStoreJobCoordinator getDataStoreJobCoordinator() {
-        if (dataStoreJobCoordinator == null) {
-            dataStoreJobCoordinator = DataStoreJobCoordinator.getInstance();
-        }
-        return dataStoreJobCoordinator;
-    }
-
-
-    public ElanServiceProvider(RpcProviderRegistry rpcRegistry) {
-        rpcProviderRegistry = rpcRegistry;
-        elanStatusMonitor.registerMbean();
+    public ElanServiceProvider(IdManagerService idManager, IInterfaceManager interfaceManager,
+                               ElanInstanceManager elanInstanceManager, ElanBridgeManager bridgeMgr,
+                               DataBroker dataBroker,
+                               ElanInterfaceManager elanInterfaceManager,
+                               ElanStatusMonitor elanStatusMonitor, ElanUtils elanUtils) {
+        this.idManager = idManager;
+        this.interfaceManager = interfaceManager;
+        this.elanInstanceManager = elanInstanceManager;
+        this.bridgeMgr = bridgeMgr;
+        this.broker = dataBroker;
+        this.elanStatusMonitor = elanStatusMonitor;
+        this.elanUtils = elanUtils;
+        elanInterfaceManager.setElanUtils(elanUtils);
     }
 
-    // private ElanInterfaceStateChangeListener elanInterfaceEventListener;
-    private ElanItmEventListener elanItmEventListener;
-
-    private static final Logger logger = LoggerFactory.getLogger(ElanServiceProvider.class);
-
-    @Override
-    public void onSessionInitiated(ProviderContext session) {
+    public void init() {
+        LOG.info("Starting ElnaServiceProvider");
         elanStatusMonitor.reportStatus("STARTING");
         try {
             createIdPool();
-            getDataStoreJobCoordinator();
-            broker = session.getSALService(DataBroker.class);
-
-            elanOvsdbNodeListener = new ElanOvsdbNodeListener(broker, generateIntBridgeMac);
-            ElanUtils.setElanServiceProvider(this);
-            elanForwardingEntriesHandler = ElanForwardingEntriesHandler.getElanForwardingEntriesHandler(this);
-            elanInterfaceManager = ElanInterfaceManager.getElanInterfaceManager(this);
-            elanInstanceManager = ElanInstanceManager.getElanInstanceManager(this);
-            elanNodeListener  = ElanNodeListener.getElanNodeListener(this);
-            elanPacketInHandler = ElanPacketInHandler.getElanPacketInHandler(this);
-            elanSmacFlowEventListener = ElanSmacFlowEventListener.getElanSmacFlowEventListener(this);
-            // Initialize statistics rpc provider for elan
-            interfaceStatsService = ElanStatisticsImpl.getElanStatisticsService(this);
-            rpcProviderRegistry.addRpcImplementation(ElanStatisticsService.class, interfaceStatsService);
-            elanInterfaceStateChangeListener = ElanInterfaceStateChangeListener.getElanInterfaceStateChangeListener(this);
-            infStateChangeClusteredListener = ElanInterfaceStateClusteredListener.getElanInterfaceStateClusteredListener(this);
-            elanDpnInterfaceClusteredListener = ElanDpnInterfaceClusteredListener.getElanDpnInterfaceClusteredListener(this);
-            ElanClusterUtils.setElanServiceProvider(this);
-            this.elanL2GatewayProvider = new ElanL2GatewayProvider(this);
-            elanInterfaceManager.registerListener(LogicalDatastoreType.CONFIGURATION,broker);
-            elanInstanceManager.registerListener(LogicalDatastoreType.CONFIGURATION,broker);
-            notificationService.registerNotificationListener(elanSmacFlowEventListener);
-            notificationService.registerNotificationListener(elanPacketInHandler);
+
             elanStatusMonitor.reportStatus("OPERATIONAL");
         } catch (Exception e) {
-            logger.error("Error initializing services", e);
+            LOG.error("Error initializing services", e);
             elanStatusMonitor.reportStatus("ERROR");
         }
     }
 
-
-
-    public void setIdManager(IdManagerService idManager) {
-        this.idManager = idManager;
-    }
-
-    public void setMdsalManager(IMdsalApiManager mdsalManager) {
-        this.mdsalManager = mdsalManager;
-    }
-
-    public void setInterfaceManager(IInterfaceManager interfaceManager) {
-        this.interfaceManager = interfaceManager;
-    }
-
-    public void setEntityOwnershipService(EntityOwnershipService entityOwnershipService) {
-        this.entityOwnershipService = entityOwnershipService;
-    }
-
-    public IInterfaceManager getInterfaceManager() {
-        return this.interfaceManager;
-    }
-
-    public IMdsalApiManager getMdsalManager() {
-        return mdsalManager;
-    }
-
-    public IITMProvider getItmManager() {
-        return itmManager;
-    }
-
-    public DataBroker getBroker() {
-        return broker;
-    }
-
-    public void setNotificationService(NotificationService notificationService) {
-        this.notificationService = notificationService;
-    }
-
-    public void setInterfaceManagerRpcService(OdlInterfaceRpcService interfaceManager) {
-        this.interfaceManagerRpcService = interfaceManager;
-    }
-
-    public OdlInterfaceRpcService getInterfaceManagerRpcService() {
-        return interfaceManagerRpcService;
-    }
-
-    public void setItmManager(IITMProvider itmManager) {
-        this.itmManager = itmManager;
-    }
-
-    public void setItmRpcService(ItmRpcService itmRpcService) {
-        this.itmRpcService = itmRpcService;
-    }
-
-    public ItmRpcService getItmRpcService() {
-        return itmRpcService;
-    }
-
-    public ElanInstanceManager getElanInstanceManager() {
-        return elanInstanceManager;
-    }
-
-    public ElanInterfaceManager getElanInterfaceManager() {
-        return elanInterfaceManager;
-    }
-
-    public EntityOwnershipService getEntityOwnershipService() {
-        return entityOwnershipService;
-    }
-
     private void createIdPool() {
         CreateIdPoolInput createPool = new CreateIdPoolInputBuilder().setPoolName(ElanConstants.ELAN_ID_POOL_NAME)
-            .setLow(ElanConstants.ELAN_ID_LOW_VALUE).setHigh(ElanConstants.ELAN_ID_HIGH_VALUE).build();
+                .setLow(ElanConstants.ELAN_ID_LOW_VALUE).setHigh(ElanConstants.ELAN_ID_HIGH_VALUE).build();
         try {
             Future<RpcResult<Void>> result = idManager.createIdPool(createPool);
-            if ((result != null) && (result.get().isSuccessful())) {
-                logger.debug("ELAN Id Pool is created successfully");
+            if (result != null && result.get().isSuccessful()) {
+                LOG.debug("ELAN Id Pool is created successfully");
             }
         } catch (Exception e) {
-            logger.error("Failed to create ELAN Id pool {}", e);
+            LOG.error("Failed to create ELAN Id pool {}", e);
         }
     }
 
@@ -294,33 +122,69 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
         boolean isSuccess = true;
         if (existingElanInstance != null) {
             if (compareWithExistingElanInstance(existingElanInstance, macTimeout, description)) {
-                logger.debug("Elan Instance is already present in the Operational DS {}", existingElanInstance);
+                LOG.debug("Elan Instance is already present in the Operational DS {}", existingElanInstance);
                 return true;
             } else {
                 ElanInstance updateElanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
-                    .setDescription(description).setMacTimeout(macTimeout)
-                    .setKey(new ElanInstanceKey(elanInstanceName)).build();
+                        .setDescription(description).setMacTimeout(macTimeout)
+                        .setKey(new ElanInstanceKey(elanInstanceName)).build();
                 MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                    ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), updateElanInstance);
-                logger.debug("Updating the Elan Instance {} with MAC TIME-OUT %l and Description %s ",
-                    updateElanInstance, macTimeout, description);
+                        ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), updateElanInstance);
+                LOG.debug("Updating the Elan Instance {} with MAC TIME-OUT %l and Description %s ",
+                        updateElanInstance, macTimeout, description);
             }
         } else {
             ElanInstance elanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
-                .setMacTimeout(macTimeout).setDescription(description).setKey(new ElanInstanceKey(elanInstanceName))
-                .build();
+                    .setMacTimeout(macTimeout).setDescription(description).setKey(new ElanInstanceKey(elanInstanceName))
+                    .build();
+            MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
+                    ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), elanInstance);
+            LOG.debug("Creating the new Elan Instance {}", elanInstance);
+        }
+        return isSuccess;
+    }
+
+    @Override
+    public boolean createEtreeInstance(String elanInstanceName, long macTimeout, String description) {
+        ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
+        boolean isSuccess = true;
+        if (existingElanInstance != null) {
+            if (compareWithExistingElanInstance(existingElanInstance, macTimeout, description)) {
+                LOG.warn("Etree Instance is already present in the Operational DS {}", existingElanInstance);
+                return true;
+            } else {
+                EtreeInstance etreeInstance = new EtreeInstanceBuilder().build();
+                ElanInstance updateElanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
+                        .setDescription(description).setMacTimeout(macTimeout)
+                        .setKey(new ElanInstanceKey(elanInstanceName))
+                        .addAugmentation(EtreeInstance.class, etreeInstance).build();
+                MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
+                        ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), updateElanInstance);
+                LOG.debug("Updating the Etree Instance {} with MAC TIME-OUT %l and Description %s ",
+                        updateElanInstance, macTimeout, description);
+            }
+        } else {
+            EtreeInstance etreeInstance = new EtreeInstanceBuilder().build();
+            ElanInstance elanInstance = new ElanInstanceBuilder().setElanInstanceName(elanInstanceName)
+                    .setMacTimeout(macTimeout).setDescription(description).setKey(new ElanInstanceKey(elanInstanceName))
+                    .addAugmentation(EtreeInstance.class, etreeInstance).build();
             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), elanInstance);
-            logger.debug("Creating the new Elan Instance {}", elanInstance);
+                    ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName), elanInstance);
+            LOG.debug("Creating the new Etree Instance {}", elanInstance);
         }
         return isSuccess;
     }
 
+    @Override
+    public EtreeInterface getEtreeInterfaceByElanInterfaceName(String elanInterface) {
+        return ElanUtils.getEtreeInterfaceByElanInterfaceName(broker, elanInterface);
+    }
+
     public static boolean compareWithExistingElanInstance(ElanInstance existingElanInstance, long macTimeOut,
-                                                          String description) {
+            String description) {
         boolean isEqual = false;
         if (existingElanInstance.getMacTimeout() == macTimeOut
-            && existingElanInstance.getDescription().equals(description)) {
+                && existingElanInstance.getDescription().equals(description)) {
             isEqual = true;
         }
         return isEqual;
@@ -331,48 +195,76 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
         createElanInstance(elanInstanceName, newMacTimout, newDescription);
     }
 
+    @Override
+    public boolean deleteEtreeInstance(String etreeInstanceName) {
+        return deleteElanInstance(etreeInstanceName);
+    }
+
     @Override
     public boolean deleteElanInstance(String elanInstanceName) {
         boolean isSuccess = false;
         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
         if (existingElanInstance == null) {
-            logger.debug("Elan Instance is not present {}", existingElanInstance);
+            LOG.debug("Elan Instance is not present {}", existingElanInstance);
             return isSuccess;
         }
-        logger.debug("Deletion of the existing Elan Instance {}", existingElanInstance);
+        LOG.debug("Deletion of the existing Elan Instance {}", existingElanInstance);
         ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
-            ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName));
+                ElanUtils.getElanInstanceConfigurationDataPath(elanInstanceName));
         isSuccess = true;
         return isSuccess;
     }
 
+    @Override
+    public void addEtreeInterface(String etreeInstanceName, String interfaceName, EtreeInterfaceType interfaceType,
+            List<String> staticMacAddresses, String description) {
+        ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(etreeInstanceName);
+        if (existingElanInstance != null && existingElanInstance.getAugmentation(EtreeInstance.class) != null) {
+            EtreeInterface etreeInterface = new EtreeInterfaceBuilder().setEtreeInterfaceType(interfaceType).build();
+            ElanInterface elanInterface;
+            if (staticMacAddresses == null) {
+                elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
+                        .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
+                        .addAugmentation(EtreeInterface.class, etreeInterface).build();
+            } else {
+                elanInterface = new ElanInterfaceBuilder().setElanInstanceName(etreeInstanceName)
+                        .setDescription(description).setName(interfaceName)
+                        .setStaticMacEntries(getPhysAddress(staticMacAddresses))
+                        .setKey(new ElanInterfaceKey(interfaceName))
+                        .addAugmentation(EtreeInterface.class, etreeInterface).build();
+            }
+            MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
+            LOG.debug("Creating the new Etree Interface {}", elanInterface);
+        }
+    }
+
     @Override
     public void addElanInterface(String elanInstanceName, String interfaceName, List<String> staticMacAddresses,
-                                 String description) {
+            String description) {
         ElanInstance existingElanInstance = elanInstanceManager.getElanInstanceByName(elanInstanceName);
         if (existingElanInstance != null) {
             ElanInterface elanInterface;
             if (staticMacAddresses == null) {
                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
-                    .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
-                    .build();
+                        .setDescription(description).setName(interfaceName).setKey(new ElanInterfaceKey(interfaceName))
+                        .build();
             } else {
                 elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
-                    .setDescription(description).setName(interfaceName)
-                    .setStaticMacEntries(getPhysAddress(staticMacAddresses))
-                    .setKey(new ElanInterfaceKey(interfaceName)).build();
+                        .setDescription(description).setName(interfaceName)
+                        .setStaticMacEntries(getPhysAddress(staticMacAddresses))
+                        .setKey(new ElanInterfaceKey(interfaceName)).build();
             }
             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
-            logger.debug("Creating the new ELan Interface {}", elanInterface);
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
+            LOG.debug("Creating the new ELan Interface {}", elanInterface);
         }
-
     }
 
     @Override
     public void updateElanInterface(String elanInstanceName, String interfaceName,
-                                    List<String> updatedStaticMacAddresses, String newDescription) {
-        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
+            List<String> updatedStaticMacAddresses, String newDescription) {
+        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
         if (existingElanInterface == null) {
             return;
         }
@@ -380,28 +272,34 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
         List<PhysAddress> updatedMacAddresses = getPhysAddress(updatedStaticMacAddresses);
         List<PhysAddress> updatedPhysAddress = getUpdatedPhyAddress(existingMacAddress, updatedMacAddresses);
         if (updatedPhysAddress.size() > 0) {
-            logger.debug("updating the ElanInterface with new Mac Entries {}", updatedStaticMacAddresses);
+            LOG.debug("updating the ElanInterface with new Mac Entries {}", updatedStaticMacAddresses);
             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
-                .setName(interfaceName).setDescription(newDescription).setStaticMacEntries(updatedPhysAddress)
-                .setKey(new ElanInterfaceKey(interfaceName)).build();
+                    .setName(interfaceName).setDescription(newDescription).setStaticMacEntries(updatedPhysAddress)
+                    .setKey(new ElanInterfaceKey(interfaceName)).build();
             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
         }
     }
 
+    @Override
+    public void deleteEtreeInterface(String elanInstanceName, String interfaceName) {
+        deleteElanInterface(elanInstanceName, interfaceName);
+        LOG.debug("deleting the Etree Interface {}", interfaceName);
+    }
+
     @Override
     public void deleteElanInterface(String elanInstanceName, String interfaceName) {
-        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
+        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
         if (existingElanInterface != null) {
             ElanUtils.delete(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName));
-            logger.debug("deleting the Elan Interface {}", existingElanInterface);
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName));
+            LOG.debug("deleting the Elan Interface {}", existingElanInterface);
         }
     }
 
     @Override
     public void addStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress) {
-        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
+        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
         PhysAddress updateStaticMacAddress = new PhysAddress(macAddress);
         if (existingElanInterface != null) {
             List<PhysAddress> existingMacAddress = existingElanInterface.getStaticMacEntries();
@@ -410,18 +308,18 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
             }
             existingMacAddress.add(updateStaticMacAddress);
             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
-                .setName(interfaceName).setStaticMacEntries(existingMacAddress)
-                .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
-                .build();
+                    .setName(interfaceName).setStaticMacEntries(existingMacAddress)
+                    .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
+                    .build();
             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
         }
     }
 
     @Override
     public void deleteStaticMacAddress(String elanInstanceName, String interfaceName, String macAddress)
-        throws MacNotFoundException {
-        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(interfaceName);
+            throws MacNotFoundException {
+        ElanInterface existingElanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
         PhysAddress physAddress = new PhysAddress(macAddress);
         if (existingElanInterface == null) {
             return;
@@ -430,19 +328,19 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
         if (existingMacAddress.contains(physAddress)) {
             existingMacAddress.remove(physAddress);
             ElanInterface elanInterface = new ElanInterfaceBuilder().setElanInstanceName(elanInstanceName)
-                .setName(interfaceName).setStaticMacEntries(existingMacAddress)
-                .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
-                .build();
+                    .setName(interfaceName).setStaticMacEntries(existingMacAddress)
+                    .setDescription(existingElanInterface.getDescription()).setKey(new ElanInterfaceKey(interfaceName))
+                    .build();
             MDSALUtil.syncWrite(broker, LogicalDatastoreType.CONFIGURATION,
-                ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
+                    ElanUtils.getElanInterfaceConfigurationDataPathId(interfaceName), elanInterface);
         } else {
-            throw new MacNotFoundException("Mac Not Found Exception");
+            throw new MacNotFoundException("deleteStaticMacAddress did not find MAC: " + macAddress);
         }
     }
 
     @Override
     public Collection<MacEntry> getElanMacTable(String elanInstanceName) {
-        Elan elanInfo = ElanUtils.getElanByName(elanInstanceName);
+        Elan elanInfo = ElanUtils.getElanByName(broker, elanInstanceName);
         List<MacEntry> macAddress = new ArrayList<>();
         if (elanInfo == null) {
             return macAddress;
@@ -450,9 +348,9 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
         List<String> elanInterfaces = elanInfo.getElanInterfaces();
         if (elanInterfaces != null && elanInterfaces.size() > 0) {
             for (String elanInterface : elanInterfaces) {
-                ElanInterfaceMac elanInterfaceMac = ElanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
+                ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
                 if (elanInterfaceMac != null && elanInterfaceMac.getMacEntry() != null
-                    && elanInterfaceMac.getMacEntry().size() > 0) {
+                        && elanInterfaceMac.getMacEntry().size() > 0) {
                     macAddress.addAll(elanInterfaceMac.getMacEntry());
                 }
             }
@@ -462,7 +360,7 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
 
     @Override
     public void flushMACTable(String elanInstanceName) {
-        Elan elanInfo = ElanUtils.getElanByName(elanInstanceName);
+        Elan elanInfo = ElanUtils.getElanByName(broker, elanInstanceName);
         if (elanInfo == null) {
             return;
         }
@@ -471,14 +369,14 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
             return;
         }
         for (String elanInterface : elanInterfaces) {
-            ElanInterfaceMac elanInterfaceMac = ElanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
+            ElanInterfaceMac elanInterfaceMac = elanUtils.getElanInterfaceMacByInterfaceName(elanInterface);
             if (elanInterfaceMac.getMacEntry() != null && elanInterfaceMac.getMacEntry().size() > 0) {
                 List<MacEntry> macEntries = elanInterfaceMac.getMacEntry();
                 for (MacEntry macEntry : macEntries) {
                     try {
                         deleteStaticMacAddress(elanInstanceName, elanInterface, macEntry.getMacAddress().getValue());
                     } catch (MacNotFoundException e) {
-                        logger.error("Mac Not Found Exception {}", e);
+                        LOG.error("Mac Not Found Exception {}", e);
                         e.printStackTrace();
                     }
                 }
@@ -487,12 +385,6 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
 
     }
 
-    @Override
-    public void close() throws Exception {
-        this.elanInstanceManager.close();
-        this.elanL2GatewayProvider.close();
-    }
-
     public static List<PhysAddress> getPhysAddress(List<String> macAddress) {
         List<PhysAddress> physAddresses = new ArrayList<>();
         for (String mac : macAddress) {
@@ -502,7 +394,7 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
     }
 
     public List<PhysAddress> getUpdatedPhyAddress(List<PhysAddress> originalAddresses,
-                                                  List<PhysAddress> updatePhyAddresses) {
+            List<PhysAddress> updatePhyAddresses) {
         if (updatePhyAddresses != null && !updatePhyAddresses.isEmpty()) {
             List<PhysAddress> existingClonedPhyAddress = new ArrayList<>();
             if (originalAddresses != null && !originalAddresses.isEmpty()) {
@@ -516,16 +408,16 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
 
     @Override
     public ElanInstance getElanInstance(String elanName) {
-        return ElanUtils.getElanInstanceByName(elanName);
+        return ElanUtils.getElanInstanceByName(broker, elanName);
     }
 
     @Override
     public List<ElanInstance> getElanInstances() {
         List<ElanInstance> elanList = new ArrayList<>();
         InstanceIdentifier<ElanInstances> elanInstancesIdentifier = InstanceIdentifier.builder(ElanInstances.class)
-            .build();
-        Optional<ElanInstances> elansOptional = ElanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
-            elanInstancesIdentifier);
+                .build();
+        Optional<ElanInstances> elansOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
+                elanInstancesIdentifier);
         if (elansOptional.isPresent()) {
             elanList.addAll(elansOptional.get().getElanInstance());
         }
@@ -536,9 +428,9 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
     public List<String> getElanInterfaces(String elanInstanceName) {
         List<String> elanInterfaces = new ArrayList<>();
         InstanceIdentifier<ElanInterfaces> elanInterfacesIdentifier = InstanceIdentifier.builder(ElanInterfaces.class)
-            .build();
-        Optional<ElanInterfaces> elanInterfacesOptional = ElanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
-            elanInterfacesIdentifier);
+                .build();
+        Optional<ElanInterfaces> elanInterfacesOptional = elanUtils.read(broker, LogicalDatastoreType.CONFIGURATION,
+                elanInterfacesIdentifier);
         if (!elanInterfacesOptional.isPresent()) {
             return elanInterfaces;
         }
@@ -558,4 +450,248 @@ public class ElanServiceProvider implements BindingAwareProvider, IElanService,
     public void setGenerateIntBridgeMac(boolean generateIntBridgeMac) {
         this.generateIntBridgeMac = generateIntBridgeMac;
     }
+
+    @Override
+    public void createExternalElanNetworks(Node node) {
+        handleExternalElanNetworks(node, (elanInstance, interfaceName) -> {
+            createExternalElanNetwork(elanInstance, interfaceName);
+            return null;
+        });
+    }
+
+    @Override
+    public void createExternalElanNetwork(ElanInstance elanInstance) {
+        handleExternalElanNetwork(elanInstance, (elanInstance1, interfaceName) -> {
+            createExternalElanNetwork(elanInstance1, interfaceName);
+            return null;
+        });
+    }
+
+    @Override
+    public void deleteExternalElanNetworks(Node node) {
+        handleExternalElanNetworks(node, (elanInstance, interfaceName) -> {
+            deleteExternalElanNetwork(elanInstance, interfaceName);
+            return null;
+        });
+    }
+
+    @Override
+    public void deleteExternalElanNetwork(ElanInstance elanInstance) {
+        handleExternalElanNetwork(elanInstance, (elanInstance1, interfaceName) -> {
+            deleteExternalElanNetwork(elanInstance1, interfaceName);
+            return null;
+        });
+    }
+
+    @Override
+    public void updateExternalElanNetworks(Node origNode, Node updatedNode) {
+        if (!bridgeMgr.isIntegrationBridge(updatedNode)) {
+            return;
+        }
+
+        List<ElanInstance> elanInstances = getElanInstances();
+        if (elanInstances == null || elanInstances.isEmpty()) {
+            LOG.trace("No ELAN instances found");
+            return;
+        }
+
+        Optional<Map<String, String>> origProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(origNode,
+                ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
+        Optional<Map<String, String>> updatedProviderMapOpt = bridgeMgr.getOpenvswitchOtherConfigMap(updatedNode,
+                ElanBridgeManager.PROVIDER_MAPPINGS_KEY);
+        Map<String, String> origProviderMappping = origProviderMapOpt.or(Collections.emptyMap());
+        Map<String, String> updatedProviderMappping = updatedProviderMapOpt.or(Collections.emptyMap());
+
+        for (ElanInstance elanInstance : elanInstances) {
+            String physicalNetworkName = elanInstance.getPhysicalNetworkName();
+            if (physicalNetworkName != null) {
+                String origPortName = origProviderMappping.get(physicalNetworkName);
+                String updatedPortName = updatedProviderMappping.get(physicalNetworkName);
+                if (origPortName != null && !origPortName.equals(updatedPortName)) {
+                    deleteExternalElanNetwork(elanInstance, getExtInterfaceName(origNode, physicalNetworkName));
+                }
+                if (updatedPortName != null && !updatedPortName.equals(origPortName)) {
+                    createExternalElanNetwork(elanInstance, getExtInterfaceName(updatedNode, updatedPortName));
+                }
+            }
+        }
+    }
+
+    private void createExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
+        if (interfaceName == null) {
+            LOG.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
+            return;
+        }
+
+        String elanInterfaceName = createIetfInterfaces(elanInstance, interfaceName);
+        addElanInterface(elanInstance.getElanInstanceName(), elanInterfaceName, null, null);
+    }
+
+    private void deleteExternalElanNetwork(ElanInstance elanInstance, String interfaceName) {
+        if (interfaceName == null) {
+            LOG.trace("No physial interface is attached to {}", elanInstance.getPhysicalNetworkName());
+            return;
+        }
+
+        String elanInstanceName = elanInstance.getElanInstanceName();
+        for (String elanInterface : getExternalElanInterfaces(elanInstanceName)) {
+            if (elanInterface.startsWith(interfaceName)) {
+                deleteIetfInterface(elanInterface);
+                deleteElanInterface(elanInstanceName, elanInterface);
+            }
+        }
+    }
+
+    @Override
+    public String getExternalElanInterface(String elanInstanceName, BigInteger dpnId) {
+        DpnInterfaces dpnInterfaces = elanUtils.getElanInterfaceInfoByElanDpn(elanInstanceName, dpnId);
+        if (dpnInterfaces == null || dpnInterfaces.getInterfaces() == null) {
+            LOG.trace("Elan {} does not have interfaces in DPN {}", elanInstanceName, dpnId);
+            return null;
+        }
+
+        for (String dpnInterface : dpnInterfaces.getInterfaces()) {
+            if (elanUtils.isExternal(dpnInterface)) {
+                return dpnInterface;
+            }
+        }
+
+        LOG.trace("Elan {} does not have any external interace attached to DPN {}", elanInstanceName, dpnId);
+        return null;
+    }
+
+    @Override
+    public Collection<String> getExternalElanInterfaces(String elanInstanceName) {
+        List<String> elanInterfaces = getElanInterfaces(elanInstanceName);
+        if (elanInterfaces == null || elanInterfaces.isEmpty()) {
+            LOG.trace("No ELAN interfaces defined for {}", elanInstanceName);
+            return Collections.emptySet();
+        }
+
+        Set<String> externalElanInterfaces = new HashSet<>();
+        for (String elanInterface : elanInterfaces) {
+            if (elanUtils.isExternal(elanInterface)) {
+                externalElanInterfaces.add(elanInterface);
+            }
+        }
+
+        return externalElanInterfaces;
+    }
+
+    @Override
+    public boolean isExternalInterface(String interfaceName) {
+        return elanUtils.isExternal(interfaceName);
+    }
+
+    @Override
+    public ElanInterface getElanInterfaceByElanInterfaceName(String interfaceName) {
+        return ElanUtils.getElanInterfaceByElanInterfaceName(broker, interfaceName);
+    }
+
+    /**
+     * Create ietf-interfaces based on the ELAN segment type.<br>
+     * For segment type flat - create transparent interface pointing to the
+     * patch-port attached to the physnet port.<br>
+     * For segment type vlan - create trunk interface pointing to the patch-port
+     * attached to the physnet port + trunk-member interface pointing to the
+     * trunk interface.
+     *
+     * @param elanInstance
+     *            ELAN instance
+     * @param parentRef
+     *            parent interface name
+     * @return the name of the interface to be added to the ELAN instance i.e.
+     *         trunk-member name for vlan network and transparent for flat
+     *         network or null otherwise
+     */
+    private String createIetfInterfaces(ElanInstance elanInstance, String parentRef) {
+        String interfaceName = null;
+
+        try {
+            if (ElanUtils.isFlat(elanInstance)) {
+                interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + "flat";
+                interfaceManager.createVLANInterface(interfaceName, parentRef, null, null, null,
+                        IfL2vlan.L2vlanMode.Transparent, true);
+            } else if (ElanUtils.isVlan(elanInstance)) {
+                Long segmentationId = elanInstance.getSegmentationId();
+                interfaceName = parentRef + IfmConstants.OF_URI_SEPARATOR + segmentationId;
+                String trunkName = parentRef + IfmConstants.OF_URI_SEPARATOR + "trunk";
+                interfaceManager.createVLANInterface(trunkName, parentRef, null, null, null,
+                        IfL2vlan.L2vlanMode.Trunk, true);
+
+                interfaceManager.createVLANInterface(interfaceName, trunkName, null, segmentationId.intValue(), null,
+                        IfL2vlan.L2vlanMode.TrunkMember, true);
+            }
+        } catch (InterfaceAlreadyExistsException e) {
+            LOG.trace("Interface {} was already created", interfaceName);
+        }
+
+        return interfaceName;
+    }
+
+    private void deleteIetfInterface(String interfaceName) {
+        InterfaceKey interfaceKey = new InterfaceKey(interfaceName);
+        InstanceIdentifier<Interface> interfaceInstanceIdentifier = InstanceIdentifier.builder(Interfaces.class)
+                .child(Interface.class, interfaceKey).build();
+        MDSALUtil.syncDelete(broker, LogicalDatastoreType.CONFIGURATION, interfaceInstanceIdentifier);
+        LOG.debug("Deleting IETF interface {}", interfaceName);
+    }
+
+    private String getExtInterfaceName(Node node, String physicalNetworkName) {
+        if (physicalNetworkName == null) {
+            return null;
+        }
+
+        String providerMappingValue = bridgeMgr.getProviderMappingValue(node, physicalNetworkName);
+        if (providerMappingValue == null) {
+            LOG.trace("No provider mapping found for physicalNetworkName {} node {}", physicalNetworkName,
+                    node.getNodeId().getValue());
+            return null;
+        }
+
+        return bridgeMgr.southboundUtils.getDataPathId(node) + IfmConstants.OF_URI_SEPARATOR
+                + bridgeMgr.getIntBridgePortNameFor(node, providerMappingValue);
+    }
+
+    private void handleExternalElanNetworks(Node node, BiFunction<ElanInstance, String, Void> function) {
+        if (!bridgeMgr.isIntegrationBridge(node)) {
+            return;
+        }
+
+        List<ElanInstance> elanInstances = getElanInstances();
+        if (elanInstances == null || elanInstances.isEmpty()) {
+            LOG.trace("No ELAN instances found");
+            return;
+        }
+
+        for (ElanInstance elanInstance : elanInstances) {
+            String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
+            if (interfaceName != null) {
+                function.apply(elanInstance, interfaceName);
+            }
+        }
+    }
+
+    private void handleExternalElanNetwork(ElanInstance elanInstance, BiFunction<ElanInstance, String, Void> function) {
+        String elanInstanceName = elanInstance.getElanInstanceName();
+        if (elanInstance.getPhysicalNetworkName() == null) {
+            LOG.trace("No physical network attached to {}", elanInstanceName);
+            return;
+        }
+
+        List<Node> nodes = bridgeMgr.southboundUtils.getOvsdbNodes();
+        if (nodes == null || nodes.isEmpty()) {
+            LOG.trace("No OVS nodes found while creating external network for ELAN {}",
+                    elanInstance.getElanInstanceName());
+            return;
+        }
+
+        for (Node node : nodes) {
+            if (bridgeMgr.isIntegrationBridge(node)) {
+                String interfaceName = getExtInterfaceName(node, elanInstance.getPhysicalNetworkName());
+                function.apply(elanInstance, interfaceName);
+            }
+        }
+    }
+
 }