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diff --git a/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronPortChangeListener.java b/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronPortChangeListener.java
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+++ b/neutronvpn/neutronvpn-impl/src/main/java/org/opendaylight/vpnservice/neutronvpn/NeutronPortChangeListener.java
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+/*
+ * Copyright (c) 2015 - 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.vpnservice.neutronvpn;
+
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.port.attributes.FixedIps;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.Ports;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+
+public class NeutronPortChangeListener extends AbstractDataChangeListener<Port> implements AutoCloseable {
+    private static final Logger LOG = LoggerFactory.getLogger(NeutronPortChangeListener.class);
+
+    private ListenerRegistration<DataChangeListener> listenerRegistration;
+    private final DataBroker broker;
+    private NeutronvpnManager nvpnManager;
+
+
+    public NeutronPortChangeListener(final DataBroker db, NeutronvpnManager nVpnMgr) {
+        super(Port.class);
+        broker = db;
+        nvpnManager = nVpnMgr;
+        registerListener(db);
+    }
+
+    @Override
+    public void close() throws Exception {
+        if (listenerRegistration != null) {
+            try {
+                listenerRegistration.close();
+            } catch (final Exception e) {
+                LOG.error("Error when cleaning up DataChangeListener.", e);
+            }
+            listenerRegistration = null;
+        }
+        LOG.info("N_Port listener Closed");
+    }
+
+
+    private void registerListener(final DataBroker db) {
+        try {
+            listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
+                    InstanceIdentifier.create(Neutron.class).child(Ports.class).child(Port.class),
+                    NeutronPortChangeListener.this, DataChangeScope.SUBTREE);
+        } catch (final Exception e) {
+            LOG.error("Neutron Manager Port DataChange listener registration fail!", e);
+            throw new IllegalStateException("Neutron Manager Port DataChange listener registration failed.", e);
+        }
+    }
+
+    @Override
+    protected void add(InstanceIdentifier<Port> identifier, Port input) {
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("Adding Port : key: " + identifier + ", value=" + input);
+        }
+        nvpnManager.handleNeutronPortCreated(input);
+
+    }
+
+    @Override
+    protected void remove(InstanceIdentifier<Port> identifier, Port input) {
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("Removing Port : key: " + identifier + ", value=" + input);
+        }
+        nvpnManager.handleNeutronPortDeleted(input);
+
+    }
+
+    @Override
+    protected void update(InstanceIdentifier<Port> identifier, Port original, Port update) {
+        if (LOG.isTraceEnabled()) {
+            LOG.trace("Updating Port : key: " + identifier + ", original value=" + original + ", update value=" +
+                    update);
+        }
+        List<FixedIps> oldIPs = (original.getFixedIps() != null) ? original.getFixedIps() : new ArrayList<FixedIps>();
+        List<FixedIps> newIPs = (update.getFixedIps() != null) ? update.getFixedIps() : new ArrayList<FixedIps>();
+
+        if (!oldIPs.equals(newIPs)) {
+            Iterator<FixedIps> iterator = newIPs.iterator();
+            while (iterator.hasNext()) {
+                FixedIps ip = iterator.next();
+                if (oldIPs.remove(ip)) {
+                    iterator.remove();
+                }
+            }
+            nvpnManager.handleNeutronPortUpdated(original, update);
+        }
+    }
+}